JP7093330B2 - Medical equipment, control equipment and control methods - Google Patents

Description

The present invention relates to a dental medical device, a control device and a control method.

The medical device for dentistry includes a medical device main body and a handpiece connected to the medical device main body. At the time of medical treatment, water is supplied from the main body of the medical treatment device to the handpiece via the supply pipeline. Water remains in the supply line after use of the handpiece. If water remains in the supply pipe for a long time due to vacation or the like, various germs may grow in the supply pipe. Therefore, it is required to drain the water remaining in the supply pipe and allow new water to flow into the supply pipe to clean the inside of the supply pipe.

For example, Japanese Patent Application Laid-Open No. 2018-736 (Patent Document 1) describes a medical device capable of cleaning a supply pipe by flowing water from a supply pipe to a discharge pipe.

Japanese Unexamined Patent Publication No. 2018-736

At the time of medical examination, the amount of water flowing out of the handpiece is reduced to ensure the dentist's view. Therefore, the amount of water flowing through the supply pipeline is reduced. Therefore, when cleaning the supply line in the medical device described in the above publication, there is a problem that the time for cleaning the supply line becomes long because the water flow flowing through the supply line is narrowed down.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a medical device, a control device, and a control method capable of shortening the cleaning time of a supply pipeline.

The medical device of the present invention is a dental medical device. The medical device includes a supply line, a discharge line, and a valve. The supply pipeline is connected to a plurality of handpieces to supply water to the plurality of handpieces. The discharge line is connected to the supply line and drains water from the supply line. The valve is located in the supply line. The plurality of handpieces include a first handpiece and a second handpiece. The supply line includes a main line, a first supply line, and a second supply line. The first supply channel branches off from the main pipeline to supply water to the first handpiece. The second supply channel branches off from the main pipeline to supply water to the second handpiece. The discharge pipe includes a first discharge channel and a second discharge channel. The first discharge channel discharges water from the first supply channel. The second discharge channel discharges water from the second supply channel. The valve includes a first supply on-off valve, a second supply on-off valve, and a proportional control valve. The first supply on-off valve is arranged in the first supply path. The second supply on-off valve is arranged in the second supply path. The proportional control valve is located in the main pipeline. The medical device further includes a control unit that controls the valve. The valves are a first supply pipe opening / closing valve arranged in the first supply passage between the connection portion between the first supply passage and the first discharge passage and the first handpiece, and the second supply passage and the second discharge. It includes a second supply line on-off valve arranged in the second supply line between the connection portion with the road and the second handpiece. At the time of medical treatment, the control unit opens the first supply on-off valve and the first supply line on-off valve, or the second supply on-off valve and the second supply line on-off valve, and cleans the supply line. At the time of cleaning the supply line, the first supply on-off valve is opened and the first supply line on-off valve is closed, and the second supply on-off valve is opened and the second supply line on-off valve is closed. Control the valve and increase the flow of water through the supply line when cleaning the supply line than during medical treatment.

According to the medical device of the present invention, it is possible to provide a medical device capable of shortening the cleaning time of the supply pipeline.

It is a perspective view schematically showing the structure of the medical apparatus in one Embodiment of this invention. It is a perspective view schematically showing the tray table shown in FIG. 1, the medium conduit, and the handpiece. FIG. 3 is a cross-sectional perspective view taken along the line III-III of FIG. It is a figure which shows schematic the pipeline structure of the medical apparatus in one Embodiment of this invention. It is a control block diagram of the medical apparatus in one Embodiment of this invention. It is a timing chart figure of the cleaning method of the medical apparatus in one Embodiment of this invention. It is a flowchart of the cleaning method of the medical apparatus in one Embodiment of this invention. It is a flowchart of another cleaning method of the medical apparatus in one Embodiment of this invention. It is a figure which shows schematic the pipeline structure of the medical apparatus in the comparative example.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

First, the configuration of the medical device according to the embodiment of the present invention will be described. In this embodiment, a dental medical device will be described.

With reference to FIG. 1, the medical device 100 according to the present embodiment includes a medical device main body 10, a medium conduit 20, and a plurality of handpieces 30.

The medical device main body 10 includes a medical table 1, a spitton 2, a lighting device 3, a lighting device arm 4, a tray table 5, a tray table arm 6, a foot controller 7, and a detection unit 8. ing. The clinic table 1 is configured so that the patient can receive medical treatment while sitting or lying on his / her back. The medical table 1 includes a base 1a, a seat plate 1b, a back plate 1c, a headrest 1d, and an armrest 1e. The seat plate 1b is installed on the base 1a so as to be able to move up and down. The back plate 1c is attached to one end of the seat plate 1b so as to be undulating. The headrest 1d is tiltably attached to the upper end of the back plate 1c. The armrest 1e is installed on the side of the seat plate 1b.

The spitton 2 is installed on the side of the clinic table 1. The spitton 2 includes a body portion 2a, a baseon 2b, a cup water faucet (cup water supply unit) 2c, and an assistant-side handpiece holder (accommodation unit) 2d. A baseon 2b is installed at the upper end of the body portion 2a. A cup water tap 2c is installed on the baseon 2b. The assistant-side handpiece holder 2d is configured to accommodate a plurality of handpieces 30. The lighting device 3 is connected to the spitton 2 via a lighting device arm 4. The lighting device 3 is, for example, a surgical light.

The tray table 5 is connected to the base 1a via the tray table arm 6. The tray table 5 is used to place and hold medical instruments, medicines and handpieces (instruments) 30. Further, the tray table 5 includes an operation setting unit 5a for setting operations of the medical table 1 and the plurality of handpieces 30 and the like. Further, the tray table 5 includes a doctor-side handpiece holder (accommodation portion) 5b. The doctor-side handpiece holder 5b is configured to accommodate a plurality of handpieces 30.

The foot controller 7 includes a pedal 7a. The pedal 7a drives a plurality of handpieces 30. The foot controller 7 is configured to be able to operate a plurality of handpieces 30 by operating the pedal 7a.

The detection unit 8 is connected to the assistant-side handpiece holder 2d and the doctor-side handpiece holder 5b. The detection unit 8 detects the accommodation state of the plurality of handpieces 30 in the assistant-side handpiece holder 2d and the doctor-side handpiece holder 5b. Specifically, the detection unit 8 is, for example, a contact or non-contact sensor.

The plurality of handpieces 30 are instruments for dental practice. The plurality of handpieces 30 include, for example, a first air turbine handpiece (first handpiece) 31, a second air turbine handpiece (second handpiece) 32, a micromotor handpiece (third handpiece) 33, and a three-way. It contains a syringe (fourth handpiece) 34. The first air turbine handpiece 31 is a high speed handpiece. The second air turbine handpiece 32 is a high speed handpiece. The micromotor handpiece 33 is a low speed handpiece. The plurality of handpieces 30 are configured to be locked to the doctor-side handpiece holder 5b provided on the tray table 5 and the assistant-side handpiece holder 2d provided on the body portion 2a.

When the enamel portion of the tooth is cut by the first air turbine handpiece 31, the second air turbine handpiece 32 and the micromotor handpiece 33, the cutting tool of those handpieces and the portion to be cut of the tooth Heats up. Water is sprayed from those handpieces to suppress this heat generation.

With reference to FIGS. 1 and 2, the medium conduit 20 is configured to supply working media such as electricity, air, and water from the medical device main body 10 to the plurality of handpieces 30. In FIG. 2, the medium conduit 20 and the handpiece 30 are shown one by one for the sake of clarity. Further, in FIG. 2, for convenience of explanation, a state in which the handpiece 30 is removed from the medium conduit 20 is shown.

The medium conduit 20 is connected to the medical device main body 10 and the handpiece 30. Specifically, a part of the plurality of medium conduits 20 connects the spitton 2 and the handpiece 30, and the other part of the plurality of medium conduits 20 connects the tray table 5 and the handpiece 30. Further, the medium conduit 20 has flexibility. The medium conduit 20 is provided with an engaging portion 20X at the tip thereof for engaging with the handpiece 30. As shown by an arrow in FIG. 2, the engaging portion 20X is inserted into the inside of the handpiece 30 from one end of the handpiece 30. In this way, the medium conduit 20 is detachably connected to the handpiece 30.

The handpiece 30 has a function of injecting water to a heat generating portion in order to suppress heat generated when cutting ivory, which is an enamel of teeth, and a function of injecting water or the like to blow off dust. The medium conduit 20 will be described with reference to FIGS. 2 and 3 by taking the first air turbine handpiece 31 as an example. The medium conduit 20 includes an exterior 20a, a supply pipe 20b for supplying water, an exhaust pipe 20c for discharging water, an air supply pipe 20d for supplying driving air, and an exhaust pipe 20f for exhausting driving air. There is. The exterior 20a has a tube shape. A supply pipe 20b, an air supply pipe 20d, an exhaust pipe 20f, and an exhaust pipe 20c are arranged inside the exterior 20a. The supply pipe 20b, the air supply pipe 20d, the exhaust pipe 20f, and the exhaust pipe 20c are arranged side by side inside the exterior 20a. The material of the exterior 20a is, for example, silicone. Each of the supply pipe 20b, the air supply pipe 20d, the exhaust pipe 20f and the exhaust pipe 20c has, for example, a two-layer structure, the material of the inner layer of the two-layer structure is fluororesin, and the material of the outer layer is urethane. The supply pipe 20b is configured to supply water from the medical device main body 10 to the handpiece 30. That is, the supply pipe 20b is a water supply pipe that supplies water from the medical device main body 10 to the handpiece 30. The discharge pipe 20c is configured to discharge water from the medium conduit 20 to the medical device main body 10. That is, the discharge pipe 20c is a drainage pipe that discharges water from the medium conduit 20 to the medical device main body 10. The air supply pipe 20d is an air supply pipe that supplies driving air to the handpiece 30. In the air turbine handpiece, it is essential to provide an air supply pipe for supplying the driving air and an exhaust pipe for exhausting the driving air, but in the micromotor handpiece, the ultrasonic handpiece, etc., the exhaust is exhausted. No tube is needed.

Next, with reference to FIG. 4, the pipeline configuration of the medical device 100 according to the present embodiment will be described. In FIG. 4, the exhaust pipe 20f of the first air turbine handpiece 31 and the second air turbine handpiece 32 is omitted in order to avoid complicating the figure.

The medical device 100 includes a valve 40, a supply line 50, an air supply line 60, a discharge line 70, a cleaning device 110, a flow meter 120, a basin pot 130, a drainage unit 140, and a vacuum. It includes a tank 150, a control device 160, and a water quality monitoring detector 170.

The valve 40 is configured to allow water to flow from the supply line 50 to any of the medical device main body 10 via the handpiece 30 and the discharge line 70. The valve 40 is separately arranged inside the medical device main body 10 and the medium conduit 20.

The valves 40 include a first supply on-off valve 40a1, a second supply on-off valve 40a2, a third supply on-off valve 40a3, and a first supply line on-off valve 40b1 arranged in the supply line 50. It includes a second supply line on-off valve 40b2, a third supply line on-off valve 40b3, and a proportional control valve VL. 1st supply on-off valve 40a1, 2nd supply on-off valve 40a2, 3rd supply on-off valve 40a3, 1st supply line on-off valve 40b1, 2nd supply line on-off valve 40b2, 3rd supply line on-off valve 40b3 , The proportional control valve VL may be solenoid valves, respectively.

Further, the valve 40 includes a main tube flushing solenoid valve (discharge on-off valve) 40c arranged in the discharge pipeline 70, and a main pipeline flushing solenoid valve 40d.

The supply pipeline 50 is connected to a plurality of handpieces 30. The supply pipeline 50 is configured to supply water to the plurality of handpieces 30. The supply line 50 includes a main water supply line (main line) 51, a first branch water supply line (first supply line) 52, a second branch water supply line (second supply line) 53, and a third branch. It includes a supply line (third supply line) 54, a fourth branch supply line (fourth supply line) 55, and a fifth branch supply line (fifth supply line) 56.

The main water supply pipeline 51 is connected to the water source (tap water source) 50a for medical treatment. A proportional control valve VL is arranged in the main water supply line 51. The proportional control valve VL proportionally controls the amount of water supplied to the first branch water supply line 52, the second branch water supply line 53, and the third branch water supply line 54 that branch from the main water supply line 51. It is configured as follows. The main water supply pipeline 51 is provided with a manual main valve 51a, a water supply source solenoid valve 51b, a sterilization filter 51c, a flow meter 120, a warmer tank 51d, and the like in order from the upstream side. The main water supply line 51 supplies water to the first branch water supply line 52, the second branch water supply line 53, the third branch water supply line 54, the fourth branch water supply line 55, and the fifth branch water supply line 56. It is configured to do.

The first branch water supply line 52 branches from the main water supply line 51 to supply water to the first air turbine handpiece 31. The first branch water supply line 52 is connected to the first air turbine handpiece 31. The first branch water supply pipeline 52 is provided in the first main tube 21 (medium conduit 20) connected to the medical device main body 10 and the first air turbine handpiece 31. The first branch water supply pipe 52 includes the supply pipe 20b of the first main tube 21. One end (first end) of the supply pipe 20b of the first main tube 21 is connected to the first main tube attachment / detachment portion 10a1 of the medical device main body 10. The other end (second end) of the supply pipe 20b of the first main tube 21 is connected to the first air turbine handpiece 31. The first supply on-off valve 40a1 is arranged in the first branch water supply pipe line 52. The first supply on-off valve 40a1 is arranged between the main water supply pipe 51 and the supply pipe 20b of the first main tube 21 in the first branch water supply pipe 52. A first supply pipeline on-off valve 40b1 is arranged in the first branch water supply pipeline 52. Specifically, the first supply line opening / closing valve 40b1 is arranged in the supply pipe 20b of the first main tube 21. The first supply pipeline on-off valve 40b1 is arranged between the connection portion of the supply pipe 20b to which the discharge pipe 20c of the first main tube 21 is connected and the first air turbine handpiece 31 in the first branch water supply pipeline 52. Has been done. The first supply pipeline on-off valve 40b1 is located between the connection portion between the first branch water supply pipeline 52 and the first branch drainage pipeline (first discharge channel) 72, which will be described later, and the first air turbine handpiece 31. It is arranged in a one-branch water supply pipe 52.

The second branch water supply line 53 branches from the main water supply line 51 to supply water to the second air turbine handpiece 32. The second branch water supply line 53 is connected to the second air turbine handpiece 32. The second branch water supply line 53 is provided in the second main tube 22 (medium conduit 20) connected to the medical device main body 10 and the second air turbine handpiece 32. The second branch water supply line 53 includes a supply pipe 20b of the second main tube 22. One end (first end) of the supply pipe 20b of the second main tube 22 is connected to the second main tube attachment / detachment portion 10a2 of the medical device main body 10. The other end (second end) of the supply pipe 20b of the second main tube 22 is connected to the second air turbine handpiece 32. A second supply on-off valve 40a2 is arranged in the second branch water supply pipe 53. The second supply on-off valve 40a2 is arranged between the main water supply pipe 51 and the supply pipe 20b of the second main tube 22 in the second branch water supply pipe 53. A second supply pipeline on-off valve 40b2 is arranged in the second branch water supply pipeline 53. Specifically, the second supply pipe line opening / closing valve 40b2 is arranged in the supply pipe 20b of the second main tube 22. The second supply pipe on-off valve 40b2 is arranged between the connection portion of the supply pipe 20b to which the discharge pipe 20c of the second main tube 22 is connected and the second air turbine handpiece 32 in the second branch water supply pipe 53. Has been done. The second supply pipeline on-off valve 40b2 is provided between the connection portion between the second branch water supply pipeline 53 and the second branch drainage pipeline (second discharge channel) 73, which will be described later, and the second air turbine handpiece 32. It is arranged in a two-branch water supply pipe 53.

The third branch water supply line 54 branches from the main water supply line 51 to supply water to the micromotor handpiece 33. The third branch water supply line 54 is connected to the micromotor handpiece 33. The third branch water supply line 54 is provided in the third main tube 23 (medium conduit 20) connected to the medical device main body 10 and the micromotor handpiece 33. The third branch water supply pipe 54 includes a supply pipe 20b of the third main tube 23. One end (first end) of the supply pipe 20b of the third main tube 23 is connected to the third main tube attachment / detachment portion 10a3 of the medical device main body 10. The other end (second end) of the supply pipe 20b of the third main tube 23 is connected to the micromotor handpiece 33. A third supply on-off valve 40a3 is arranged in the third branch water supply pipe line 54. The third supply on-off valve 40a3 is arranged between the main water supply pipe 51 and the supply pipe 20b of the third main tube 23 in the third branch water supply pipe 54. A third supply pipeline on-off valve 40b3 is arranged in the third branch water supply pipeline 54. Specifically, the third supply pipe line opening / closing valve 40b3 is arranged in the supply pipe 20b of the third main tube 23. The third supply pipe on-off valve 40b3 is arranged between the connection portion of the supply pipe 20b to which the discharge pipe 20c of the third main tube 23 is connected and the micromotor handpiece 33 in the third branch water supply pipe 54. There is. The third supply line on-off valve 40b3 is a third branch between the connection portion between the third branch water supply line 54 and the third branch drainage line (third discharge line) 74, which will be described later, and the micromotor handpiece 33. It is arranged in the water supply pipe line 54.

The fourth branch water supply line 55 branches from the main water supply line 51 to supply water to the three-way syringe 34. The fourth branch water supply line 55 is connected to the three-way syringe 34. The fourth branch water supply pipe 55 is provided in the fourth main tube 24 (medium conduit 20) connected to the medical device main body 10 and the three-way syringe 34. The fourth branch water supply pipe 55 includes the supply pipe 20b of the fourth main tube 24. One end (first end) of the supply pipe 20b of the fourth main tube 24 is connected to the fourth main tube attachment / detachment portion 10a4 of the medical device main body 10. The other end (second end) of the supply pipe 20b of the fourth main tube 24 is connected to the three-way syringe 34. The three-way syringe 34 is provided with a manual on-off valve (water supply operating lever) 34b. The manual on-off valve (water supply operating lever) 34b is opened by the pressing operation of the manual on-off valve (water supply operating lever) 34b, and water is injected from the tip portion 34c of the three-way syringe 34.

The fifth branch water supply pipe 56 branches from the main water supply pipe 51 to supply water to the cup water tap 2c. The fifth branch water supply pipe 56 is connected to the cup water tap 2c. The fifth branch water supply pipe 56 is provided in the medical device main body 10. A cup water supply valve 56a is arranged in the fifth branch water supply pipe 56. The cup water supply valve 56a is, for example, a solenoid valve. When the presence of the cup (not shown) under the cup water tap 2c is detected by the sensor (not shown) provided on the cup water tap 2c, the cup water valve 56a is opened and the cup water tap 2c is opened. Water is supplied to the cup from.

A cleaning device 110 is connected to the main water supply pipe line 51. When the cleaning device 110 is used as a chemical solution cleaning device, the chemical solution cleaning device includes a chemical solution bottle 110a and a chemical solution pump 110b. The chemical solution bottle 110a is filled with a chemical solution such as hydrogen peroxide solution and sodium hypochlorite. The chemical solution pump 110b is configured to supply an appropriate amount of the chemical solution of the chemical solution bottle 110a to the main water supply line 51. A chemical amount detection unit 111 is attached to the chemical liquid bottle 110a. The chemical amount detection unit 111 is a sensor capable of detecting the chemical amount of the chemical liquid bottle 110a.

A flow meter 120 is attached to the main water supply line 51. The flow meter 120 is for measuring the flow rate of water flowing through the main water supply line 51. The flow meter 120 is arranged on the downstream side of the connection portion between the main water supply pipe line 51 and the cleaning device 110.

Further, a water quality monitoring detector 170 is attached to the main water supply pipeline 51. The water quality monitoring detector 170 is a detector for monitoring the water quality of water staying in at least one of the medical device main body 10 and the supply pipe 20b of the medium conduit 20. Therefore, the water quality monitoring detector 170 may also be attached to the discharge pipe 20c of the medium conduit 20. 1st supply on-off valve 40a1, 2nd supply on-off valve 40a2, 3rd supply on-off valve 40a3 and 1st supply pipeline on-off valve 40b1, 2nd supply pipeline on-off valve 40b2, 3rd supply pipeline on-off valve 40b3 May be configured to automatically operate in response to the output of the water quality monitoring detector 170.

The air supply line 60 includes a main air supply line 61, a first branch air supply line 62, a second branch air supply line 63, a third branch air supply line 64, and a fourth branch air supply. Includes pipeline 65. The first branch air supply line 62, the second branch air supply line 63, the third branch air supply line 64, and the fourth branch air supply line 65 are branched from the main air supply line 61, respectively.

The main air supply pipe 61 is connected to an air source 60a as a compressed air source by a compressor (not shown). The main air supply pipe 61 is provided with a manual main valve 61a, a sterilization filter 61b, and the like in order from the upstream side.

The first branch air supply line 62 supplies air to the first air turbine handpiece 31. The first branch air supply line 62 is connected to the first air turbine handpiece 31. The first branch air supply pipeline 62 is provided in the medical device main body 10 and the first main tube 21. The first branch air supply pipe 62 includes the air supply pipe 20d of the first main tube 21. A first air turbine drive air solenoid valve 62a is arranged in the first branch air supply pipe line 62. One end (first end) of the air supply pipe 20d of the first main tube 21 is connected to the first main tube attachment / detachment portion 10a1 of the medical device main body 10. The other end (second end) of the air supply pipe 20d of the first main tube 21 is connected to the first air turbine handpiece 31. The air supplied to the first air turbine handpiece 31 from the other end (second end) of the air supply pipe 20d of the first main tube 21 is a turbine provided in the head of the first air turbine handpiece 31 (not shown). Can be rotated or injected from the injection port (not shown) of the first air turbine handpiece 31.

The second branch air supply line 63 supplies air to the second air turbine handpiece 32. The second branch air supply pipe 63 is connected to the second air turbine handpiece 32. The second branch air supply pipeline 63 is provided in the medical device main body 10 and the second main tube 22. The second branch air supply pipe 63 includes the air supply pipe 20d of the second main tube 22. A second air turbine drive air solenoid valve 63a is arranged in the second branch air supply pipe 63. One end (first end) of the air supply pipe 20d of the second main tube 22 is connected to the second main tube attachment / detachment portion 10a2 of the medical device main body 10. The other end (second end) of the air supply pipe 20d of the second main tube 22 is connected to the second air turbine handpiece 32. The air supplied to the second air turbine handpiece 32 from the other end (second end) of the air supply pipe 20d of the second main tube 22 is a turbine provided in the head of the second air turbine handpiece 32 (not shown). Can be rotated or injected from the injection port (not shown) of the second air turbine handpiece 32.

The third branch air supply line 64 supplies air to the micromotor handpiece 33. The third branch air supply line 64 is connected to the micromotor handpiece 33. The third branch air supply pipeline 64 is provided in the medical device main body 10 and the third main tube 23. The third branch air supply pipe 64 includes the air supply pipe 20d of the third main tube 23. A micromotor chip air solenoid valve 64a is arranged in the third branch air supply pipe line 64. One end (first end) of the air supply pipe 20d of the third main tube 23 is connected to the third main tube attachment / detachment portion 10a3 of the medical device main body 10. The other end (second end) of the air supply pipe 20d of the third main tube 23 is connected to the micromotor handpiece 33. The air supplied to the micromotor handpiece 33 from the other end (second end) of the air supply pipe 20d of the third main tube 23 can be injected from the injection port (not shown) of the micromotor handpiece 33.

The fourth branch air supply line 65 supplies air to the three-way syringe 34. The fourth branch air supply line 65 is connected to the three-way syringe 34. The fourth branch air supply pipe 65 is provided in the medical device main body 10 and the fourth main tube 24. The fourth branch air supply pipe 65 includes the air supply pipe 20d of the three-way syringe 34. One end (first end) of the air supply pipe 20d of the fourth main tube 24 is connected to the fourth main tube attachment / detachment portion 10a4 of the medical device main body 10. The other end (second end) of the air supply pipe 20d of the fourth main tube 24 is connected to the three-way syringe 34.

The handpiece control block 10b includes a first supply on-off valve 40a1, a second supply on-off valve 40a2, a third supply on-off valve 40a3, a proportional control valve VL, a first air turbine drive air solenoid valve 62a, and a second air turbine. It includes a drive air solenoid valve 63a and a micromotor chip air solenoid valve 64a.

The discharge pipe 70 is connected to the supply pipe 50. The discharge pipe 70 is configured to discharge water from the supply pipe 50. The drainage line 70 includes a first main drainage line 71, a first branch drainage line (first drainage line) 72, a second branch drainage line (second discharge line) 73, and a third branch drainage pipe. It includes a road (third discharge pipe) 74 and a second main drainage pipe 75.

The first branch drainage pipe 72, the second branch drainage pipe 73, and the third branch drainage pipe 74 join the first main drainage pipe 71. A main tube flushing solenoid valve (discharge on-off valve) 40c is arranged in the first main drainage pipe 71. The first main drainage pipe 71 is configured to allow drainage to the baseon pot 130.

The main tube flushing solenoid valve 40c includes a confluence portion where the first branch drainage pipe 72, the second branch drainage pipe 73, and the third branch drainage pipe 74 join the first main drainage pipe 71, and a basin pot 130. It is placed between. That is, the main tube flushing solenoid valve 40c is on the downstream side of the confluence portion where the first branch drainage pipe 72, the second branch drainage pipe 73, and the third branch drainage pipe 74 join the first main drainage pipe 71. Is located in.

The first branch drainage pipe 72 drains water from the first branch water supply pipe 52. The first branch drainage pipe 72 is connected to the first branch water supply pipe 52. The first branch drainage pipe 72 is provided in the medical device main body 10 and the first main tube 21. The first branch drainage pipe 72 includes a drainage pipe 20c of the first main tube 21. One end (first end) of the discharge pipe 20c of the first main tube 21 is connected to the first main tube attachment / detachment portion 10a1 of the medical device main body 10. The other end (second end) of the discharge pipe 20c of the first main tube 21 is connected to the supply pipe 20b of the first main tube 21 in front of the first supply line opening / closing valve 40b1.

A first supply pipeline on-off valve 40b1 is arranged between the connection portion between the other end of the discharge pipe 20c of the first main tube 21 and the supply pipe 20b and the first air turbine handpiece 31. That is, the first supply pipeline on-off valve 40b1 is arranged on the downstream side of the connection portion between the other end of the discharge pipe 20c of the first main tube 21 and the supply pipe 20b. Specifically, the first supply pipeline on-off valve 40b1 is preferably provided at the connection portion of the medium conduit 20 with the first air turbine handpiece 31.

The second branch drainage pipe 73 drains water from the second branch water supply pipe 53. The second branch drainage pipe 73 is connected to the second branch water supply pipe 53. The second branch drainage pipe 73 is provided in the medical device main body 10 and the second main tube 22. The second branch drainage pipe 73 includes the drainage pipe 20c of the second main tube 22. One end (first end) of the discharge pipe 20c of the second main tube 22 is connected to the second main tube attachment / detachment portion 10a2 of the medical device main body 10. The other end (second end) of the discharge pipe 20c of the second main tube 22 is connected to the supply pipe 20b of the second main tube 22 in front of the second supply pipe line opening / closing valve 40b2.

A second supply pipe line on-off valve 40b2 is arranged between the connection portion between the other end of the discharge pipe 20c of the second main tube 22 and the supply pipe 20b and the second air turbine handpiece 32. That is, the second supply pipe line on-off valve 40b2 is arranged on the downstream side of the connection portion between the other end of the discharge pipe 20c of the second main tube 22 and the supply pipe 20b. Specifically, the second supply pipeline on-off valve 40b2 is preferably provided at the connection portion of the medium conduit 20 with the second air turbine handpiece 32.

The third branch drainage pipe 74 drains water from the third branch water supply pipe 54. The third branch drainage pipe 74 is connected to the third branch water supply pipe 54. The third branch drainage pipe 74 is provided in the medical device main body 10 and the third main tube 23. The third branch drainage pipe 74 includes the drainage pipe 20c of the third main tube 23. One end (first end) of the discharge pipe 20c of the third main tube 23 is connected to the third main tube attachment / detachment portion 10a3 of the medical device main body 10. The other end (second end) of the discharge pipe 20c of the third main tube 23 is connected to the supply pipe 20b of the third main tube 23 in front of the third supply line opening / closing valve 40b3. In addition, although the discharge pipe 20c is generally not provided in all the handpieces, in the present embodiment, the discharge pipe 20c is provided for cleaning the pipeline.

A third supply pipe line on-off valve 40b3 is arranged between the connection portion between the other end of the discharge pipe 20c of the third main tube 23 and the supply pipe 20b and the micromotor handpiece 33. That is, the third supply pipe line on-off valve 40b3 is arranged on the downstream side of the connection portion between the other end of the discharge pipe 20c of the third main tube 23 and the supply pipe 20b. Specifically, the third supply pipeline on-off valve 40b3 is preferably provided at the connection portion of the medium conduit 20 with the micromotor handpiece 33.

The second main drainage pipe 75 drains water from the fourth branch water supply pipe 55. The second main drainage pipe 75 is connected to the fourth branch water supply pipe 55. The second main drainage pipe line 75 is provided in the medical device main body 10 and the fourth main tube 24. The second main drainage pipe 75 includes the drainage pipe 20c of the fourth main tube. One end (first end) of the discharge pipe 20c of the fourth main tube 24 is connected to the fourth main tube attachment / detachment portion 10a4 of the medical device main body 10. The other end (second end) of the discharge pipe 20c of the fourth main tube 24 is connected to the supply pipe 20b of the fourth main tube 24. In the fourth main tube 24, it is desirable that the branch portion of the supply pipe 20b and the discharge pipe 20c is arranged in the vicinity of the connection portion of the medium conduit 20 with the three-way syringe 34. A main pipe flushing solenoid valve 40d is arranged in the second main drainage pipe 75. The second main drainage pipe 75 is configured to be able to drain water to the baseon pot 130 via the main pipe flushing solenoid valve 40d.

The basin pot 130 is configured to store water discharged from each of the discharge pipes 20c of the first main tube 21, the second main tube 22, the third main tube 23, and the fourth main tube 24.

The baseon pot 130 and the drainage portion 140 are connected by a connecting pipe 141. The drainage unit 140 is configured to drain water from the baseon pot 130. The baseon pot 130 and the vacuum tank 150 are connected by a connecting pipe 151. The medical device 100 of the present embodiment is configured so that the water stored in the basin pot 130 flows into the vacuum tank 150 connected to the basin pot 130 to clean the inside of the vacuum tank 150.

The control device 160 controls the dental medical device 100. The control device 160 is configured to control the entire medical device 100. The control device is, for example, a control board. The control device 160 includes a control unit 160a. The control unit 160a is, for example, a CPU (Central Processing Unit). The control unit 160a is electrically connected to the valve 40. The control unit 160a controls the valve 40. The control unit 160a includes a foot controller 7, a detection unit 8, a cleaning device 110, a chemical amount detection unit 111, a flow meter 120, a drive unit 161 and a display unit 162, a notification unit 163, a water amount adjustment switch 164, and a cleaning start operation button. A flushing switch 165, a main switch 166, and a water quality monitoring detector 170 are connected.

The drive unit 161 is for driving an electromagnetic valve or the like of each instrument or the like. The display unit 162 is installed on a tray table 5 (see FIG. 1) or the like, and various information related to medical treatment or the like is displayed. When the notification unit 163 detects that the amount of the chemical solution in the chemical solution bottle of the cleaning device 110 has decreased by the chemical solution amount detection unit 111, or when it detects an abnormality in other devices, the notification unit 163 indicates that effect. It works to notify you.

The water amount adjusting switch 164, the flushing switch 165, and the main switch 166 are provided on the tray table 5 (see FIG. 1) of the medical device main body 10, respectively. The water amount adjustment switch 164 is operated by a doctor, an assistant, or the like to adjust the water amount of each instrument at the time of medical treatment. The flushing switch 165 is operated by a doctor, an assistant, or the like during flushing of the supply pipe. The main switch 166 is operated by a doctor, an assistant, or the like when activating the medical device 100.

At the time of medical treatment, the control unit 160a opens the proportional control valve VL, the first supply on-off valve 40a1, the second supply on-off valve 40a2, and the third supply on-off valve 40a3, and opens the first supply line on-off valve 40b1. , The second supply line on-off valve 40b2 and the second supply line on-off valve 40b2 are opened, and the main tube flushing solenoid valve (discharge on-off valve) 40c is closed. As a result, water is injected from the water injection ports of the first air turbine handpiece 31, the second air turbine handpiece 32, and the micromotor handpiece 33. In order to make it easier to see the medical treatment site during medical treatment, the flow rate of water injected from the water injection port of each instrument of the first air turbine handpiece 31, the second air turbine handpiece 32 and the micromotor handpiece 33 is It can be suppressed. Specifically, by suppressing the valve opening degree of the proportional control valve VL, it is possible to control the amount of water injected from the water injection port of each instrument.

At the time of medical treatment, the control unit 160a has a first supply on-off valve 40a1, a second supply on-off valve 40a2, a third supply on-off valve 40a3, a first supply pipeline on-off valve 40b1, and a second supply pipeline on-off valve 40a1. Water may be injected from at least one of the water injection ports of each instrument by controlling the opening and closing of the valve 40b2 and the third supply pipe opening / closing valve 40b3.

When cleaning the supply pipeline 50, the control unit 160a includes a proportional control valve VL, a first supply on-off valve 40a1, a second supply on-off valve 40a2, and a third supply on-off valve 40a3. Open, close the first supply line on-off valve 40b1, the second supply line on-off valve 40b2, the second supply line on-off valve 40b2, and open the main tube flushing solenoid valve (discharge on-off valve) 40c. As a result, water flows from the supply pipe 20b of the first main tube 21, the second main tube 22, and the third main tube to the medical device main body 10 via the discharge pipe 20c.

When cleaning the supply pipeline, the control unit 160a includes a first supply on-off valve 40a1, a second supply on-off valve 40a2, a third supply on-off valve 40a3, a first supply pipeline on-off valve 40b1, and a second supply. Even if water is controlled to open and close the pipeline opening / closing valve 40b2 and the third supply pipeline opening / closing valve 40b3 and water is flowed from at least one of the supply pipes 20b of each main tube to the medical device main body 10 via the discharge pipe 20c. good.

When cleaning the supply pipeline, if the amount of water injected from the water injection port of each instrument at the time of medical treatment is maintained, it takes time to clean the supply pipeline. In the present embodiment, the control unit 160a may use the first supply on-off valve 40a1 and the first supply on-off line on-off valve 40b1 or the second supply on-off valve 40a2 and the second supply on-off line on-off valve 40a2 during medical treatment. Open valve 40b2. The control unit 160a opens the first supply on-off valve 40a1 and closes the first supply on-off valve 40b1 and closes the first supply on-off valve 40b1 and the second supply on-off valve 40a2 when cleaning the supply pipeline 50. And close the second supply pipeline on-off valve 40b2. The control unit 160a controls the proportional control valve VL to increase the flow rate of water flowing through the supply pipe 50 at the time of cleaning the supply pipe as compared with the case of medical treatment. Specifically, the flow rate of water flowing through the supply pipe 50 at the time of medical treatment is a flow rate set by the dentist. If the flow rate set by the dentist is not the maximum, the flow rate of water flowing through the supply line 50 during cleaning of the supply line will be higher than the flow rate set by the dentist. That is, when cleaning the supply pipe, the valve opening degree of the proportional control valve VL becomes larger than in the case of medical treatment, so that the flow rate of water flowing through the supply pipe 50 increases. As a result, the time for cleaning the supply pipeline can be shortened. The control unit 160a may maximize the flow rate of water flowing through the supply pipe 50 when cleaning the supply pipe. Specifically, the valve opening degree of the proportional control valve VL may be the maximum when cleaning the supply circuit. When the flow rate set by the dentist at the time of medical treatment is the maximum, the amount of water flowing through the supply line 50 at the time of cleaning the supply line is the maximum.

Further, in the case of medical treatment, the control unit 160a has a first supply on-off valve 40a1, a first supply line on-off valve 40b1, a second supply on-off valve 40a2, a second supply line on-off valve 40b2, and a second supply. At least one of the on-off valve 40a2 and the third supply line on-off valve 40b3 may be opened. The control unit 160a opens the first supply on-off valve 40a1 and closes the first supply on-off valve 40b1 and opens the second supply on-off valve 40a2 when cleaning the supply pipeline 50. The second supply line on-off valve 40b2 may be closed, the third supply on-off valve 40a3 may be opened, and the third supply line on-off valve 40b3 may be closed.

The control unit 160a controls the proportional control valve VL and returns the flow rate of the water flowing through the supply pipe 50 to the amount of water at the time of medical treatment after the completion of the supply pipe cleaning. As a result, it is possible to reduce the time and effort required to return the amount of water used for cleaning the supply pipe to the amount of water used for medical treatment.

When the control unit 160a acquires information indicating that one of the plurality of handpieces 30 has been removed from the assistant side handpiece holder 2d and the doctor side handpiece holder 5b and the pedal 7a has been stepped on, the control unit 160a is proportional. The control valve VL is controlled to return the flow rate of water flowing through the supply line 50 to the flow rate of water set in advance by the dentist during medical treatment. As a result, it is possible to reliably determine the time of medical treatment and return the amount of water to the amount of water at the time of medical treatment. The amount of water to be returned may be a predetermined amount.

When the control unit 160a detects that one of the plurality of handpieces 30 has been removed from the assistant side handpiece holder 2d and the doctor side handpiece holder 5b by the detection unit 8 during the supply pipeline cleaning, the control unit 160a detects. The proportional control valve VL is controlled to return the flow rate of water flowing through the supply line 50 to the flow rate of water at the time of medical treatment. As a result, it is possible to give priority to medical treatment over supply pipeline cleaning and return the amount of water to the amount of water at the time of medical treatment.

1st supply on-off valve 40a1, 2nd supply on-off valve 40a2, 3rd supply on-off valve 40a3, 1st supply line on-off valve 40b1, 2nd supply line on-off valve 40b2, 3rd supply line on-off valve 40b3 , The main tube flushing solenoid valve (discharge on-off valve) 40c and the main pipeline flushing solenoid valve 40d may be configured to operate in conjunction with the operation of the main switch 166 of the medical device main body 10. Further, the control device 160 automatically sets the first supply line on-off valve 40b1, the second supply line on-off valve 40b2, the third supply line on-off valve 40b3, and the main tube according to the output of the water quality monitoring detector 170. The drive unit 161 may be controlled so as to operate the flushing solenoid valve (discharge on-off valve) 40c and the main pipeline flushing solenoid valve 40d. The supply pipeline cleaning (flushing) according to the output of the water quality monitoring detector 170 is also automatically driven and controlled by a timer so that it is completed after a predetermined time of about 1 to 5 minutes before the actual medical treatment time. Is also good.

Next, with reference to FIGS. 1, 4 and 5, a control method for controlling the medical device 100 according to the present embodiment will be described.

The control unit 160a controls each valve based on the signals from the foot controller 7, the operation switch, and the detection unit 8.

In the medical device 100, the control unit 160a may control each valve based on a control signal received from an external device that is electrically or wirelessly connected to transmit and receive various signals.

Mainly referring to FIGS. 1 and 4, in the medical device 100 according to the present embodiment, the first air turbine handpiece 31, the second air turbine handpiece 32, and the micromotor handpiece are used for medical treatment. Water is injected from the water inlet of at least one of the 33 instruments. Specifically, the detection unit 8 is connected to the fact that at least one of the instruments has been removed from either the assistant-side handpiece holder 2d or the doctor-side handpiece holder 5b of the medical device main body 10. Is detected by. In this state, the foot controller 7 is operated. As a result, at least one of the first supply on-off valve 40a1, the second supply on-off valve 40a2, and the third supply on-off valve 40a3 corresponding to the removed instrument is opened. Further, the proportional control valve VL is opened. The valve opening degree of the proportional control valve VL is adjusted according to the amount of water preset by the dentist for the removed instrument. Further, at least one of the first supply line on-off valve 40b1, the second supply line on-off valve 40b2, and the third supply line on-off valve 40b3 corresponding to the removed instrument is opened. Further, the main tube flushing solenoid valve (discharge on-off valve) 40c is closed. As a result, water is injected from the water injection port of the removed instrument.

That is, in the control method of the present embodiment, the first supply on-off valve 40a1 and the first supply line on-off valve 40b1, the second supply on-off valve 40a2 and the second supply line on-off valve 40b2 are used in the medical treatment. , At least one of the third supply on-off valve 40a3 and the third supply line on-off valve 40b3 is controlled to be opened.

Mainly referring to FIGS. 4 and 5, in order to make it easier to see the medical treatment site during medical treatment, the instruments of the first air turbine handpiece 31, the second air turbine handpiece 32, and the micromotor handpiece 33 are used. The flow rate of water injected from the water injection port of the ment is suppressed. Specifically, the flow rate of water injected from the water injection port of each instrument is adjusted by adjusting the valve opening of the proportional control valve VL by operating the water amount adjustment switch 164 by the doctor and the assistant. To. As a result, the flow rate of water injected from the water injection port of each instrument is suppressed.

At least one of the first air turbine handpiece 31, the second air turbine handpiece 32, and the micromotor handpiece 33 during supply line cleaning (flushing), mainly with reference to FIGS. 1 and 4. Water is discharged from the supply pipe 20b of the medium conduit 20 connected to the instrument to the baseon pot 130 from the discharge pipe 70 via the discharge pipe 20c. Specifically, the first supply on-off valve 40a1, the second supply on-off valve 40a2, and the third supply on-off valve 40a3 corresponding to at least one of the instruments are opened. Further, the proportional control valve VL is opened. Further, the first supply line on-off valve 40b1, the second supply line on-off valve 40b2, and the third supply line on-off valve 40b3 corresponding to at least one of the instruments are closed. Further, the main tube flushing solenoid valve 40c is opened. As a result, water is discharged from the supply pipe 20b of the medium conduit 20 corresponding to at least one of the instruments to the baseon pot 130 from the discharge pipe 70 via the discharge pipe 20c.

That is, the control method of the present embodiment opens the first supply on-off valve 40a1 and closes the first supply on-off valve 40b1 at the time of cleaning the supply pipeline 50. And control to open the second supply on-off valve 40a2 and close the second supply line on-off valve 40b2, and to open the third supply on-off valve 40a3 and close the third supply line on-off valve 40b3. do.

In the control method of the present embodiment, the proportional control valve VL is controlled so that the flow rate of the water flowing through the supply pipe 50 increases at the time of cleaning the supply pipe, as compared with the case of medical treatment. When cleaning the supply pipe, the valve opening of the proportional control valve VL becomes larger than that in the medical treatment, so that the flow rate of water flowing through the supply pipe 50 increases. Therefore, it is possible to shorten the time for cleaning the supply pipe as compared with the case where the amount of water injected from the water injection port of each instrument at the time of medical treatment is maintained. In the control method of the present embodiment, the proportional control valve VL may be controlled so that the valve opening degree is maximized at the time of cleaning the supply pipeline.

The fourth branch water supply line 55 connected to the three-way syringe 34 is not provided with a supply on-off valve and a supply line on-off valve. On the other hand, the three-way syringe 34 is provided with a water supply operating lever 34b in the grip portion 34a. Water is injected from the tip portion 34c of the three-way syringe 34 by pressing the water supply operation lever 34b by the doctor and the assistant, and water is not injected into the three-way syringe 34 unless the water supply operation lever 34b is pressed. Therefore, the water in the pipe is discharged from the supply pipe 20b of the medium conduit 20 corresponding to the fourth main tube 24 to the baseon pot 130 from the second main drainage pipe 75 via the discharge pipe 20c.

Further, when the foot controller 7 is operated, the first air turbine drive air electromagnetic valve 62a and the second air corresponding to at least one instrument of the first air turbine handpiece 31 and the second air turbine handpiece 32 are operated. At least one of the turbine-driven air electromagnetic valves 63a opens and closes, and air (turbine-driven air) is supplied to at least one of the first air turbine handpiece 31 and the second air turbine handpiece 32. Turbine-driven air rotates a turbine (not shown) built into the air turbine head.

Further, when the foot controller 7 is operated, the micromotor chip air solenoid valve 64a opens and closes, and air (chip air) is supplied to the micromotor handpiece 33. The tip air is injected from the injection port (not shown) of the micromotor handpiece 33.

The three-way syringe 34 is provided with an air operating lever (not shown) in the grip portion 34a. Air is ejected from the tip portion 34c by pressing the air operating lever by the doctor and the assistant. The air operation lever is arranged side by side with the water supply operation lever 34b. The air operation lever and the water supply operation lever 34b are selectively or simultaneously operated by the doctor and the assistant.

Subsequently, with reference to FIGS. 4 to 7, the cleaning method of the medical device 100 according to the present embodiment will be described in detail.

Mainly referring to FIGS. 6 and 7, when the main switch 166 or the flushing switch 165 is turned on (switch ON), the main pipeline flushing for cleaning the three-way syringe is performed (step S1). First, the main conduit flushing solenoid valve 40d for cleaning the three-way syringe is turned on (open state). As a result, the supply pipe line 50 for cleaning the three-way syringe is opened (open state). On the other hand, in the supply line 50 to the first air turbine handpiece 31, the second air turbine handpiece 32, and the micromotor handpiece 33, the first supply line on-off valve 40b1, the second supply line on-off valve 40b2, and the third The supply line on-off valve 40b3 remains closed. Subsequently, when the water supply source solenoid valve 51b is turned on and opened, the warmer tank 51d, the cup water supply valve 56a, the handpiece control block (HP block) 10b, and the fourth main tube (WS main tube) 24 are supplied in this order. Water is flushed to 50. As a result, the residual water is sequentially discharged from the supply pipe 50 for cleaning the three-way syringe, and the water is replaced with new water. After that, each handpiece (HP) pipeline flushing is carried out. Subsequently, the main pipeline flushing solenoid valve 40d is turned off (closed state). As a result, the pipeline is closed (closed state).

Next, each handpiece (HP) conduit flushing other than the three-way syringe is performed.

First, the first air turbine handpiece pipeline flushing is performed (step S2). The first air turbine water injection solenoid valve (first supply pipeline on-off valve) 40a1 is turned ON (open state). This opens the pipeline. The first air turbine water injection switching solenoid valve (first supply pipeline on-off valve) 40b1 is always OFF (closed state) except during medical treatment. In this state, the supply pipe 50 to the tip of the first air turbine handpiece is closed. Normally, at the time of medical examination, the first air turbine water injection switching solenoid valve (first supply pipeline on-off valve) 40b1 is set to ON (open state), and the pick-up signal from the assistant side handpiece holder 2d or the doctor side handpiece holder 5b. When the operation signal of the foot controller 7 is received, the first air turbine handpiece 31 is driven and water is injected into the tip of the first air turbine handpiece. On the other hand, at the time of flushing, the first air turbine water injection switching solenoid valve (first supply pipeline on-off valve) 40b1 is OFF (closed state). Subsequently, the main tube flushing solenoid valve 40c is turned on. In this state, the pipeline is open. Therefore, the water is supplied in the order of the main water supply pipe 51, the first branch water supply pipe 52, the supply pipe 20b of the first main tube 21, the discharge pipe 20c, the first branch drainage pipe 72, and the first main drainage pipe 71. After flowing in the pipeline, it is drained to the Basin pot 130. As a result, the inside of these pipelines is washed with tap water. Therefore, the supply pipe 20b of the first main tube 21 is washed. Subsequently, after a predetermined time required for cleaning the pipeline has elapsed, the first air turbine water injection solenoid valve (first supply pipeline on-off valve) 40a1 is turned off. As a result, the pipeline is closed.

Next, the second air turbine handpiece pipeline flushing is performed (step S3). The second air turbine water injection solenoid valve (second supply pipeline on-off valve) 40a2 is turned ON (open state). This opens the pipeline. The second air turbine water injection switching solenoid valve (second supply pipeline on-off valve) 40b2 is always OFF (closed state) except during medical treatment. In this state, the supply pipe 50 to the tip of the second air turbine handpiece is closed. Normally, at the time of medical examination, the second air turbine water injection switching solenoid valve (second supply pipeline on-off valve) 40b2 is turned ON (open state), and the conduit is opened. Further, the main tube flushing solenoid valve 40c is turned on (open state). Therefore, the water is supplied in the order of the main water supply pipe 51, the second branch water supply pipe 53, the supply pipe 20b of the second main tube 22, the discharge pipe 20c, the second branch drainage pipe 73, and the first main drainage pipe 71. After flowing through the pipeline, it is drained to the Basin pot 130. This cleans the inside of these pipelines. Therefore, the supply pipe 20b of the second main tube 22 is washed. Subsequently, after a predetermined time required for cleaning the pipeline has elapsed, the second air turbine water injection solenoid valve (second supply pipeline on-off valve) 40a2 is turned off (closed state). As a result, the pipeline is closed.

Subsequently, the micromotor handpiece pipeline flushing is performed (step S4). The micromotor water injection solenoid valve (third supply pipeline on-off valve) 40a3 is turned ON (open state). This opens the pipeline. The micromotor water injection switching solenoid valve (third supply pipeline on-off valve) 40b3 is always OFF (closed state) except during medical examinations. In this state, the supply pipe 50 to the tip of the micromotor handpiece is closed. Normally, at the time of medical treatment, the micromotor water injection switching solenoid valve (third supply pipeline on-off valve) 40b3 is turned ON (open state), and the conduit is opened. Further, the main tube flushing solenoid valve 40c is turned on (open state). Therefore, the water is supplied in the order of the main water supply pipe 51, the third branch water supply pipe 54, the supply pipe 20b of the third main tube 23, the discharge pipe 20c, the third branch drainage pipe 74, and the first main drainage pipe 71. After flowing in the pipeline, it is drained to the Basin pot 130. This cleans the inside of these pipelines. Therefore, the supply pipe 20b of the third main tube 23 is washed. Subsequently, the micromotor water injection solenoid valve (third supply pipeline on-off valve) 40a4 is turned off (closed state). As a result, the pipeline is closed. Subsequently, the main tube flushing solenoid valve 40c is turned off (closed state). As a result, the pipeline is closed. This completes each handpiece (HP) pipeline flushing. The cleaning order may be sequentially cleaning from the pipeline having the highest flow rate, or sequentially from the handpiece having a high frequency of use. This makes it possible to speedily flow water into the pipeline in a supply pipeline having a limited capacity. Therefore, the inside of the medium conduit can be efficiently cleaned with a small amount of water. By performing this flushing operation for a predetermined time of about 1 to 5 minutes, the inside of the pipeline is sterilized and washed with chlorine of tap water, so that the water in the pipeline can be drunk without any problem. In the above, the main tube flushing solenoid valve 40c is turned on (open state) in step S2 and turned off (closed state) in step S4, but is turned ON (open state) and OFF (closed state) in each step S2 to S4. ) May be done.

It should be noted that this flushing operation may be automatically started (automatic start) at a time learned in advance, for example, before a predetermined time of the medical treatment time every morning after the main switch 166 is turned on (open state). Further, this flushing operation may be automatically started (automatic start) when the chlorine concentration decreases, that is, when the value detected by the chlorine concentration sensor provided in the supply pipe 50 becomes a predetermined value or more. Further, this flushing operation may be automatically started (automatically started) by a timer at a time set by a dentist or the like. The timer is set, for example, at a predetermined time before medical treatment or on a holiday.

Further, the first supply on-off valve 40a1, the second supply on-off valve 40a2, the second supply on-off valve 40a2, the first supply pipeline on-off valve 40b1, and the first are automatically turned on according to the output of the water quality monitoring detector 170. 2 The supply line on-off valve 40b2 and the third supply line on-off valve 40b3 may be operated. This makes it possible to automatically clean the pipeline when the water quality deteriorates.

Further, with reference to FIG. 8, the main water supply line 51 may be filled with the line cleaning agent (chemical solution) from the cleaning device 110 via the cleaning agent line. When the cleaning agent pipeline is opened, the cleaning agent is filled in the main pipeline (step S11). That is, the main pipeline flushing (process S1), the first air turbine handpiece pipeline flushing (process S2), the second air turbine handpiece pipeline flushing (process S3), and the micromotor hand by the water filled with the cleaning agent. Piece pipeline flushing is sequentially performed (step S4). When each handpiece pipeline flushing is completed, the detergent pipeline is subsequently closed and switched to a water pipeline (step S12). After that, the water is replaced by the automatic flushing function.

In the present embodiment, after cleaning the inside of the pipeline with the chemical solution, the inside of the pipeline can be re-cleaned with tap water. By replacing tap water with a chemical solution in this way, the effect of the chemical solution remaining in the pipeline can be eliminated.

Subsequently, a modified example of the present embodiment will be described.

As a modification of the present embodiment, the medical device main body 10 may be provided with a micro-bubble generator as the above-mentioned cleaning device 110, or may be provided with an ultraviolet generator to sterilize the inside of a pipeline. Further, in the above embodiment, the discharge pipe line 70 is stored in the basin pot 130 and then drained, but the first main drainage pipe line 71 and the second main drainage pipe line are in front of the basin pot 130. By connecting the 75 and the supply pipe 20b via a pump and a three-way electromagnetic valve (not shown) to drive the pump, water in the pipe can be circulated. When circulating the water in the pipeline, use the above-mentioned chemical cleaning device, ultraviolet generator, micro-bubble generator, etc. to circulate the water for a predetermined time of about 1 to 5 minutes, and then the above-mentioned three-way electromagnetic valve. By draining the water in the pipeline to the baseon pot 130 via the above, the water in the pipeline can be efficiently washed with a small amount of water.

Further, when the chlorine concentration of tap water decreases due to staying in the supply pipeline 50 for a long vacation, the medical device 100 adds sodium hypochlorite to tap water to obtain an appropriate chlorine concentration. It may be configured to be secured.

Further, the valve 40 other than the proportional control valve VL may be either an electromagnetic control valve or an air control valve. When the first supply line on-off valve 40b1 and the second supply line on-off valve 40b2 are air control valves, the first supply line on-off valve 40b1 and the second supply line on-off valve 40b2 are from the air supply pipe 20d. Operates on turbine driven air. When the third supply line on-off valve 40b3 is an air control valve, the third supply line on-off valve 40b3 is configured to operate with tip air from the air supply pipe 20d.

Next, the action and effect of the present embodiment will be described in comparison with the comparative example.

With reference to FIG. 9, the medical device 100 of the comparative example is different from the medical device 100 of the present embodiment in that it does not include the proportional control valve VL of the medical device 100 of the present embodiment. Further, the medical device 100 of the comparative example is different from the medical device 100 of the present embodiment in that it includes a first needle valve NV1, a second needle valve NV2, and a third needle valve NV3.

The first needle valve NV1 is arranged in the first branch water supply pipe line 52. The first needle valve NV1 is arranged between the first supply on-off valve 40a1 and the first main tube 21. The first needle valve NV1 is configured so that the valve opening degree can be adjusted. Specifically, the water amount adjustment switch 164 is operated by the dentist by the doctor and the assistant, and the valve opening of the first needle valve NV1 is adjusted to inject water from the water injection port of the first air turbine handpiece 31. The flow rate of water to be made is adjusted. The second needle valve NV2 is arranged in the second branch water supply pipe line 53. By adjusting the valve opening degree of the second needle valve NV2, the flow rate of water injected from the water injection port of the second air turbine handpiece 32 is adjusted. The third needle valve NV3 is arranged in the third branch water supply pipe line 54. By adjusting the valve opening degree of the third needle valve NV3, the flow rate of water injected from the water injection port of the micromotor handpiece 33 is adjusted.

The first needle valve NV1, the second needle valve NV2, and the third needle valve NV3 need to be adjusted by the water amount adjusting switch 164 every time the flow rate of water is adjusted. The valve opening of the first needle valve NV1, the second needle valve NV2, and the third needle valve NV3 is maintained in a state where the amount of water flowing out from the handpiece is reduced in order to secure the view of the dentist at the time of medical treatment. Therefore, it takes time to clean the supply pipeline.

On the other hand, in the medical device 100 of the present embodiment, the proportional control valve VL is arranged in the main water supply line 51. Therefore, when cleaning the supply pipe (for example, when the flushing switch 165 is turned on by an operation by a dentist), the valve opening of the proportional control valve VL is larger (for example, almost fully opened) than in the case of medical treatment. By doing so, the flow rate of water flowing through the supply pipe 50 can be increased. Therefore, the time for cleaning the supply pipeline can be shortened. The valve opening degree of the proportional control valve VL at this time may be larger or maximum than the valve opening degree set by the operation of the dentist at the time of medical treatment.

Further, in the medical device 100 of the present embodiment, the control unit 160a may use the first supply on-off valve 40a1 and the first supply pipeline on-off valve 40b1 or the second supply on-off valve 40a2 during medical treatment. And the second supply pipeline on-off valve 40b2 is opened to clean the supply pipeline 50. At the time of cleaning the supply pipeline, the first supply on-off valve 40a1 is opened and the first supply pipeline on-off valve 40b1 is closed. The second supply on-off valve 40a2 is opened and the second supply line on-off valve 40b2 is closed to control the proportional control valve VL. To increase. Therefore, the time for cleaning the supply pipeline can be shortened.

Further, in the medical device 100 of the present embodiment, the control unit 160a controls the proportional control valve VL, and after the completion of cleaning the supply pipe, the flow rate of water flowing through the supply pipe 50 is measured at the time of medical treatment, that is, Return to the amount of water preset by the dentist. As a result, it is possible to reduce the time and effort required to return the amount of water used for cleaning the supply pipe to the amount of water used for medical treatment. The amount of water to be returned may be a predetermined amount.

Further, in the medical device 100 of the present embodiment, in the control unit 160a, one of the plurality of handpieces 30 is removed from the assistant side handpiece holder 2d and the doctor side handpiece holder 5b, and the pedal 7a is stepped on. When the information indicating that the dentist has been obtained is acquired, the proportional control valve VL is controlled to return the flow rate of water flowing through the supply pipe line 50 to the flow rate of water set in advance by the dentist at the time of medical treatment. As a result, it is possible to reliably determine the time of medical treatment and return the amount of water to the amount of water at the time of medical treatment. The amount of water to be returned may be a predetermined amount.

In the medical device 100 of the present embodiment, in the control unit 160a, when the supply pipeline is washed, one of the plurality of handpieces 30 is set to the assistant side handpiece holder 2d and the doctor side handpiece holder 5b by the detection unit 8. When it is detected that the water has been removed from the dentist, the proportional control valve VL is controlled to return the flow rate of water flowing through the supply line 50 to the flow rate of water set in advance by the dentist during medical treatment. As a result, it is possible to give priority to medical treatment over supply pipeline cleaning and return the amount of water to the amount of water at the time of medical treatment. The amount of water to be returned may be a predetermined amount.

The control device 160 that controls the medical device 100 of the present embodiment can shorten the cleaning time of the supply pipe line 50.

The control method for controlling the medical device 100 of the present embodiment can shorten the cleaning time of the supply pipe line 50.

It should be considered that the embodiments disclosed this time are exemplary in all respects and not restrictive. The scope of the present invention is shown by the scope of claims rather than the above description, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

1 Medical table, 2 Spitton, 3 Lighting device, 4 Lighting device arm, 5 Tray table, 6 Tray table arm, 7 Foot controller, 8 Detector, 10 Medical device main body, 20 Medium conduit, 20a exterior, 20b supply pipe , 20c exhaust pipe, 20d air supply pipe, 20f exhaust pipe, 21 1st main tube, 22 2nd main tube, 23 3rd main tube, 24 4th main tube, 30 handpiece, 31 1st air turbine handpiece, 32 2nd air turbine handpiece, 33 micromotor handpiece, 34 3 way syringe, 40 valve, 40a1 1st supply on-off valve, 40a2 2nd supply on-off valve, 40a3 3rd supply on-off valve, 40b1 1st supply pipe Road on-off valve, 40b2 2nd supply line on-off valve, 40b3 3rd supply line on-off valve, 40c main tube flushing electromagnetic valve, 40d main line flushing electromagnetic valve, 50 supply line, 51 main water supply line, 52 1st Branch water supply line, 53 2nd branch water supply line, 54 3rd branch water supply line, 55 4th branch water supply line, 56 5th branch water supply line, 60 air supply line, 61 main air supply line, 62 1st branch air supply line, 63 2nd branch air supply line, 64 3rd branch air supply line, 65 4th branch air supply line, 70 discharge line, 71 1st main drainage line, 72 1st branch drainage pipe, 73 2nd branch drainage pipe, 74 3rd branch drainage pipe, 75 2nd main drainage pipe, 100 medical equipment, 110 cleaning equipment, 111 chemical amount detector, 120 flow meter, 130 basin pot, 140 drain, 150 vacuum tank, 160 control device, 170 water quality monitoring detector, VL proportional control valve.

Claims (6)

It ’s a dental medical device,
A supply pipeline that is connected to a plurality of handpieces and supplies water to the plurality of handpieces.
A discharge pipe connected to the supply pipe and discharging the water from the supply pipe,
With a valve arranged in the supply line
The plurality of handpieces include a first handpiece and a second handpiece.
The supply line is a main line, a first supply line that branches from the main line to supply the water to the first handpiece, and a branch from the main line to supply the water to the second handpiece. Including the second supply channel to supply
The discharge pipe includes a first discharge passage for discharging the water from the first supply passage and a second discharge passage for discharging the water from the second supply passage.
The valve includes a first supply on-off valve arranged in the first supply passage, a second supply on-off valve arranged in the second supply passage, and a proportional control valve arranged in the main pipeline. Including,
Further provided with a control unit for controlling the valve
The valve is a first supply pipe opening / closing valve arranged in the first supply passage between the connection portion between the first supply passage and the first discharge passage and the first handpiece, and the second. A second supply pipe opening / closing valve arranged in the second supply passage between the connection portion between the supply passage and the second discharge passage and the second handpiece is included.
The control unit
At the time of medical treatment, the first supply on-off valve and the first supply line on-off valve, or the second supply on-off valve and the second supply line on-off valve are opened.
At the time of cleaning the supply pipeline for cleaning the supply pipeline, the first supply on-off valve is opened and the first supply pipeline on-off valve is closed, and the second supply on-off valve is opened and the first. 2 Close the supply pipeline on-off valve and
A medical device that controls the proportional control valve to increase the flow rate of the water flowing through the supply pipeline when cleaning the supply pipeline as compared with the case of the medical treatment. The control unit controls the proportional control valve, and after the completion of cleaning the supply line, returns the flow rate of the water flowing through the supply line to the flow rate of the water at the time of the medical treatment, according to claim 1 . Medical equipment. A housing unit in which the plurality of handpieces are housed, and a storage unit.
Further equipped with a pedal for driving the plurality of handpieces,
The control unit controls the proportional control valve when it obtains information indicating that one of the plurality of handpieces has been removed from the accommodating unit and that the pedal has been depressed, and the supply pipe. The medical device according to claim 1 , wherein the flow rate of the water flowing through the road is returned to the flow rate of the water at the time of the medical treatment. A housing unit in which the plurality of handpieces are housed, and a storage unit.
Further, a detection unit for detecting the accommodation state of the plurality of handpieces in the accommodation unit is provided.
The control unit controls the proportional control valve when it detects that one of the plurality of handpieces has been removed from the accommodating unit by the detection unit during cleaning of the supply pipeline. The medical device according to claim 1 , wherein the flow rate of the water flowing through the supply pipeline is returned to the flow rate of the water at the time of the medical treatment. It is a control device that controls medical equipment for dentistry.
The medical device is
A supply pipeline that is connected to a plurality of handpieces and supplies water to the plurality of handpieces.
A discharge pipe connected to the supply pipe and discharging the water from the supply pipe,
With the valve arranged in the supply pipeline,
A control unit for controlling the valve is provided.
The plurality of handpieces include a first handpiece and a second handpiece.
The supply line is a main line, a first supply line that branches from the main line to supply the water to the first handpiece, and a branch from the main line to supply the water to the second handpiece. Including the second supply channel to supply
The discharge pipe includes a first discharge passage for discharging the water from the first supply passage and a second discharge passage for discharging the water from the second supply passage.
The valves include a first supply on-off valve arranged in the first supply passage, a second supply on-off valve arranged in the second supply passage, and a proportional control valve arranged in the main pipeline. The first supply pipe on-off valve arranged in the first supply passage between the connection portion between the first supply passage and the first discharge passage and the first handpiece, the second supply passage and the said. A second supply line opening / closing valve arranged in the second supply line between the connection portion with the second discharge path and the second handpiece is included.
The control unit
At the time of medical treatment, the first supply on-off valve and the first supply line on-off valve, or the second supply on-off valve and the second supply line on-off valve are opened.
At the time of cleaning the supply pipeline for cleaning the supply pipeline, the first supply on-off valve is opened and the first supply pipeline on-off valve is closed, and the second supply on-off valve is opened and said. Close the second supply pipeline on-off valve,
A control device that controls the proportional control valve and increases the flow rate of the water flowing through the supply line when cleaning the supply line, as compared with the case of the medical treatment. A control method for controlling dental medical equipment,
The medical device is
A supply pipeline that is connected to a plurality of handpieces and supplies water to the plurality of handpieces.
A discharge pipe connected to the supply pipe and discharging the water from the supply pipe,
It has a valve arranged in the supply pipeline and a control unit for controlling the valve .
The plurality of handpieces include a first handpiece and a second handpiece.
The supply line is a main line, a first supply line that branches from the main line to supply the water to the first handpiece, and a branch from the main line to supply the water to the second handpiece. Including the second supply channel to supply
The discharge pipe includes a first discharge passage for discharging the water from the first supply passage and a second discharge passage for discharging the water from the second supply passage.
The valves include a first supply on-off valve arranged in the first supply passage, a second supply on-off valve arranged in the second supply passage, and a proportional control valve arranged in the main pipeline. The first supply pipe on-off valve arranged in the first supply passage between the connection portion between the first supply passage and the first discharge passage and the first handpiece, the second supply passage and the said. A second supply line opening / closing valve arranged in the second supply line between the connection portion with the second discharge path and the second handpiece is included.
(A) At the time of medical treatment, the control is performed so as to open the first supply on-off valve and the first supply line on-off valve, or the second supply on-off valve and the second supply line on-off valve. The process controlled by the department and
(B) When cleaning the supply pipeline for cleaning the supply pipeline, the first supply on-off valve is opened and the first supply pipeline on-off valve is closed, and the second supply on-off valve is opened and closed. A step in which the control unit controls to open the valve and close the second supply pipeline on-off valve.
(C) A control method including a step in which the control unit controls the proportional control valve so that the flow rate of the water flowing through the supply pipe increases when the supply pipe is washed, as compared with the case of the medical treatment. ..

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