JP6979188B2 - How to use work table, dental treatment unit, work table - Google Patents

Description

The present invention relates to a work table, a dental treatment unit, and a method of using the work table. In more detail, the present invention relates to an instrument equipped with a dental tool, a work table provided with a holder for holding the instrument, and dental treatment. Regarding how to use the unit and work table.

As a treatment method for the caries, the caries portion is generally removed, and the tooth is cut by an instrument. If multiple instruments are grouped near the dental treatment chair, it will be easier to use during the procedure. On the other hand, if the tip of the dental tool is turned upward when gathering in the vicinity of the dental treatment chair, the operator's hand may accidentally touch the dental tool. Therefore, for example, Patent Document 1 discloses a structure of a work table for accommodating an instrument with the tip of a dental tool facing downward.

Japanese Unexamined Patent Publication No. 11-137620

However, in the structure of Patent Document 1, when the used instrument is returned to the work table, the direction of returning to the work table is forced so that the grip portion of the instrument faces the front side. In order to concentrate the surgeon on the procedure, it is desirable that the surgeon does not take extra care.

The present invention has been made in view of the above circumstances, and is a work table, a dental treatment unit, and a work table that make it easy to return the instrument to the holder and prevent the dental tool from touching the operator. The purpose is to provide usage.

In order to solve the above problem, the invention of claim 1 is a work table provided with an instrument equipped with a dental tool and a holder for accommodating the instrument, and is housed in the holder. The instrument housed in the holder is rotated based on the detection device capable of detecting the mounting position of the dental tool of the instrument and the detection result of the mounting position of the dental tool by the detection device. The detection device is a metal sensor provided with an instrument rotation mechanism , the detection device is installed in the holder and can detect the distance to the dental tool, and the instrument rotation mechanism is the metal sensor to the said. It is characterized in that the instrument housed in the holder is rotated according to the distance to the dental tool until the tip of the dental tool of the instrument faces the metal sensor .

The invention of claim 2 houses an instrument including a head portion for mounting a dental tool, a grip portion gripped by an operator, and a handpiece portion located in front of the grip portion, and the instrument. A work table provided with a holder, a detection device capable of detecting the mounting position of the dental tool of the instrument housed in the holder, and a detection result of the mounting position of the dental tool by the detection device. The instrument is provided with an instrument rotation mechanism for rotating the instrument housed in the holder, and the detection device is installed in the holder on the outer peripheral surface of the handpiece portion of the instrument. It is a magnetic sensor that can detect the distance to the installed magnetic body, and the instrument rotation mechanism uses the instrument housed in the holder according to the distance from the magnetic sensor to the magnetic body. It is characterized in that the tip of the dental tool of the instrument is rotated until it faces the holder.

The invention of claim 3 is characterized by being a dental treatment unit equipped with the work table of the invention of claim 1 or 2.

The invention of claim 4 is a method of using a work table including an instrument equipped with a dental tool and a holder for accommodating the instrument, which is installed in the holder and stored in the holder. A metal sensor capable of detecting the dental tool of the instrument and a motor for rotating the instrument housed in the holder in a predetermined direction based on the detection result of the dental tool by the metal sensor. When the minimum value is determined, a step in which the motor rotates the instrument at least once in a predetermined direction, a step of determining a minimum value of the distance of the dental tool to the metal sensor, and a step of determining the minimum value. When the instrument is rotated in the predetermined direction or the instrument is rotated in the direction opposite to the predetermined direction from the current position of the instrument to the position corresponding to the minimum value. The step of determining which of the cases is required in a short period of time, the step of rotating the instrument by the motor in the determined rotation direction of the instrument, and the position of the rotated instrument are It is characterized by including a step of stopping the rotation of the instrument by the motor when the position corresponding to the minimum value is reached.
The invention of claim 5 is a method of using a work table including an instrument equipped with a dental tool and a holder for accommodating the instrument, which is installed in the holder and stored in the holder. A metal sensor capable of detecting the dental tool of the instrument and a motor for rotating the instrument housed in the holder in a predetermined direction based on the detection result of the dental tool by the metal sensor. If the motor is close to the step of rotating the instrument in a predetermined direction and the dental tool is close to the metal sensor, the motor will rotate the instrument in the same direction as the predetermined direction. When the distance of the dental tool to the metal sensor is long, the motor rotates the instrument in a direction opposite to the predetermined direction, and the rotated instrument. It is characterized by including a step of stopping the rotation of the instrument by the motor when the position of is reached a position corresponding to the minimum value of the distance of the dental tool with respect to the metal sensor.

According to the present invention, the instrument rotation mechanism rotates the instrument housed in the holder, so that the tip of the dental tool does not face upward, for example. Therefore, it becomes difficult for the tip of the dental tool to touch the operator. Also, since the work table keeps the dental tool out of contact with the surgeon, the surgeon can return the instrument to the holder without worrying about the orientation of the dental tool.

It is a perspective view for demonstrating one Embodiment of the dental treatment unit of this invention. It is a perspective view of a work table. It is a functional block diagram of a work table. It is a figure for demonstrating an instrument rotation mechanism. (A) is a diagram for explaining the positions of the instrument, the drive roller, and the holding roller before the cylinder is operated, and (B) is the position of the instrument, the drive roller, and the holding roller after the cylinder is operated. It is a figure for demonstrating. It is a figure for demonstrating the distance between a metal sensor and a bar. It is a flowchart of rotation control of an instrument according to Example 1. It is a flowchart of rotation control of an instrument according to Example 2. It is a flowchart of rotation control of an instrument according to Example 3. It is a figure for demonstrating the detection apparatus by Example 4. FIG.

Hereinafter, the work table, the dental treatment unit, and the method of using the work table of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view for explaining an embodiment of the dental treatment unit of the present invention.
As shown in FIG. 1, the dental treatment unit includes, for example, a dental treatment chair 1, a spitton 4, a work table 7, and the like, and the dental treatment chair 1 has a contour sheet 2 above the base 3 and is a contour sheet. A backrest and a headrest are provided on one end side of the contour seat 2, and a leg rest is provided on the other end side of the contour seat 2. The spitton 4 has a shadowless lamp 5, and for example, an arm 6 is rotatably attached to a support of the shadowless lamp 5.

The work table 7 can be attached to the arm 6, and the upper surface of the work table 7 has a touch panel type operation unit 10 on the front side. A holder 8 capable of accommodating various instruments is installed below the operation unit 10. A hose storage portion 9 is provided on the back side of the holder 8 to store the hose extending from each instrument. As described above, since the hose is stored in the hose storage portion 9 and is not exposed except when the instrument is used, it is difficult for the operator to get caught in the hose.

FIG. 2 is a perspective view of the work table, and FIG. 3 is a functional block diagram of the work table.
As shown in FIG. 2, the holder 8 is formed in a U-shape in a cross-sectional view, and is installed under the operation unit 10 with the U-shaped opening portion facing upward. In the holder 8, for example, five grip portions 8c are formed side by side in the horizontal direction. In FIG. 2, a syringe 11 for cleaning the oral cavity, a straight type handpiece 12, a contra type handpiece 13, and scaling are formed. Handpiece 14 for use is contained.

The syringe 11 includes a head portion for mounting a nozzle and a grip portion gripped by the operator, and the handpieces 12 to 14 include a head portion for mounting a dental tool and a grip portion gripped by the surgeon. A hose capable of supplying air, water, etc. toward the head portion is installed at the rear end of each grip portion. In FIG. 2, the handpiece 14 for the work (scaling) of removing tartar and plaque (plaque) is pulled out, and the hose 14d is visible.

A bar 13a for cutting teeth is attached to each head portion of the handpieces 12 and 13. The bar has a diamond or carbide tip and is shaped to suit each purpose, such as removal or finishing. On the other hand, a chip 14a is attached to the head portion of the handpiece 14. The tip is configured to have a shape suitable for each purpose such as scaling and smoothing of the root surface after scaling (root planing). The bar or tip corresponds to the dental tool of the present invention. Therefore, the handpieces 13 and 14 correspond to the instruments of the present invention.

As shown in FIG. 3, the work table 7 has a control unit 50, an operation unit 10, a rotation processing unit 30, and a position processing unit 40, which are connected via a bus.
The control unit 50 is composed of a CPU, a memory, and the like, and can control the operation of the work table 7 by loading various programs and data stored in the memory, for example, the ROM into the RAM and executing the various programs. ..

The rotation processing unit 30 can rotate the handpieces 12 to 14 separately. Specifically, each grip portion 8c of the holder 8 is provided with an insertion detection portion 8d and an instrument rotation mechanism 20, respectively. The insertion detection unit 8d is, for example, a metal sensor, but may be a limit switch, an optical sensor, or the like.
For example, in the example of the contra type handpiece 13, the insertion detection unit 8d detects the position of, for example, the rear end of the handpiece 13 housed in the grip portion 8c. Then, when it is determined that the handpiece 13 is housed in the grip portion 8c, the rotation processing unit 30 outputs a signal for detecting the distance from the metal sensor 8b to the bar 13a to the position processing unit 40.

The position processing unit 40 detects the bars and chips attached to the handpieces 12 to 14 and determines the positions of the bars and chips. Specifically, on the holder bottom surface 8a shown in FIG. 2, metal sensors 8b are installed at positions facing the bars 13a of the handpieces 12 and 13 and the chips 14a of the handpieces 14 housed in the grip portions 8c, respectively. ing. The metal sensor 8b corresponds to a detection device capable of detecting the mounting position of the dental tool of the present invention. It is also possible to omit the insertion detection unit 8d and use the detection result of the metal sensor 8b to determine that the handpiece 13 is housed in the grip portion 8c.

The metal sensor 8b is, for example, an eddy current type displacement sensor, and is composed of a sensor head and a driver. The sensor head is provided on the bottom surface 8a of the holder, and can generate a high frequency magnetic flux toward the bar 13a (or the chip 14a, the same applies hereinafter). As the distance between the sensor head and the bar 13a becomes shorter, the overcurrent loss becomes larger and the oscillation amplitude becomes smaller. This oscillation amplitude is rectified, and the distance to the bar 13a is detected by the change in the DC voltage.

Whether the distance from the metal sensor 8b to the bar 13a is far or short is determined by the tool position determination unit 41. When it is determined that the distance from the metal sensor 8b to the bar 13a is long, the position processing unit 40 outputs a signal for rotating the handpiece 13 to the rotation processing unit 30.

FIG. 4 is a diagram for explaining the instrument rotation mechanism, and FIG. 5 is a cross-sectional view taken along the line VV of FIG.
Explaining the example of the contra type handpiece 13 in the same manner as above, as shown in FIG. 4, the handpiece 13 includes a head portion 13b for mounting the bar 13a and a grip portion 13c gripped by the operator. The hose 13d is pulled out from the rear end of the grip portion 13c.

The instrument rotation mechanism 20 has, for example, two holding rollers 25, and is rotatably supported by the bottom portion of the grip portion 8c. Above the holding roller 25, for example, two drive rollers 23 that can be brought into contact with and detached from the grip portion 13c are provided.
Specifically, the drive roller 23 is rotatably supported by the L-shaped mounting plate 21 and connected to the shaft of the motor 22. A cylinder 24 is provided above the mounting plate 21. The cylinder 24 is fixed to the lower surface of the work table 7 and is turned on by supplying air, for example. The cylinder may have a structure that is turned on by excitation of a solenoid instead of air.

When it is determined that the distance from the metal sensor 8b to the bar 13a is long as described above and a signal for rotating the handpiece 13 is output from the position processing unit 40 to the rotation processing unit 30, the cylinder 24 is turned on. Then, the shaft 24a protrudes downward. As a result, the mounting plate 21 moves downward, so that the drive roller 23 moves downward from the position shown in FIG. 5 (A) and is housed in the grip portion 8c as shown in FIG. 5 (B). It comes into contact with the grip portion 13c of the handpiece 13.

Next, when the motor 22 rotates in a predetermined direction, the drive roller 23 also rotates in a predetermined direction to rotate the grip portion 13c (the entire handpiece 13). Since the holding roller 25 also follows the rotation of the handpiece 13, the handpiece 13 easily rotates.

FIG. 6 is a diagram for explaining the distance between the metal sensor and the bar.
When the tip of the bar 13a is directed upward as described in FIG. 4, for example, the overcurrent loss becomes small and the oscillation amplitude becomes large, so that it is determined that the distance from the metal sensor 8b to the bar 13a is long. Will be done. However, when the motor 22 rotates based on the detection result of the metal sensor 8b, the entire handpiece 13 rotates, so that the bar 13a also rotates.

As the handpiece 13 rotates and the tip of the bar 13a moves toward the metal sensor 8b, the oscillation amplitude gradually decreases (the distance from the metal sensor 8b to the bar 13a gradually decreases). When the tip of the bar 13a faces the metal sensor 8b, the distance from the metal sensor 8b to the bar 13a becomes the minimum value.
Therefore, for example, when the detected value of the metal sensor 8b is larger than a predetermined threshold value (for example, a value that can be determined that the tip of the bar 13a faces the metal sensor 8b and is preset by an experiment or the like). It can be determined that the distance from the metal sensor 8b to the bar 13a is long, and when the detected value of the metal sensor 8b is smaller than a predetermined threshold value, it can be determined that the distance from the metal sensor 8b to the bar 13a is short. Alternatively, when the detected value of the metal sensor 8b changes from decreasing to increasing (minimum value), it may be determined that the distance from the metal sensor 8b to the bar 13a is short.

FIG. 7 is a flowchart of the rotation control of the instrument according to the first embodiment.
As described above, assuming a contra type handpiece 13, for example, when it is determined from the detection result of the insertion detection unit 8d that the grip portion 13c of the handpiece 13 is housed in the grip portion 8c (YES in step S101). The metal sensor 8b located directly below the head portion 13b of the handpiece 13 detects the distance to the bar 13a (step S102).

When it is determined from the detection result of the metal sensor 8b that the distance to the bar 13a is long (YES in step S103), the cylinder 24 is turned on and the grip portion 13c is gripped by the drive roller 23 and the holding roller 25. (Step S104), the process proceeds to step S105. On the other hand, when it is determined that the distance from the metal sensor 8b to the bar 13a is short (NO in step S103), a series of routines are exited.

In step S105, the motor 22 rotates in a predetermined direction to rotate the handpiece 13. While the handpiece 13 is rotating, the position processing unit 40 monitors the distance from the metal sensor 8b to the bar 13a, and when the detected value of the metal sensor 8b is larger than a predetermined threshold value (step S106). NO), return to step S102.

On the other hand, when the detected value of the metal sensor 8b becomes smaller than the predetermined threshold value (YES in step S106), the rotation of the motor 22 is stopped and the rotation of the handpiece 13 is stopped (step S107). As a result, the handpiece 13 is housed in the holder 8 with the tip of the bar 13a facing the metal sensor 8b. When the rotation of the motor 22 is stopped, the cylinder 24 is turned off and the drive roller 23 is separated from the grip portion 13c.

In this way, the instrument rotation mechanism 20 rotates the handpiece 13 housed in the holder 8 so that the tip of the bar 13a faces the holder 8, so that the tip of the bar 13a does not touch the operator. Further, since the work table 7 prevents the bar 13a from touching the operator, the operator can return the handpiece 13 to the holder 8 without worrying about the orientation of the bar 13a. As a result, the operator can easily return the handpiece 13 to the holder 8.

FIG. 8 is a flowchart of instrument rotation control according to the second embodiment. It should be noted that steps S201 to S205 are the same as steps S101 to S105 of the first embodiment. Similar to the above, when the distance from the metal sensor 8b to the bar 13a is long, the grip portion 13c is gripped by the drive roller 23 and the holding roller 25. After that, the motor 22 rotates in a predetermined direction to rotate the handpiece 13 at least once (step S205).

Here, in the second embodiment, the position processing unit determines the minimum value of the distance of the bar 13a with respect to the metal sensor 8b.
In the rotation processing unit, for example, the detection result of the metal sensor 8b can be monitored, and one rotation of the handpiece 13 can be determined from the periodic change of the oscillation amplitude. Further, in this rotation processing unit, either the case where the handpiece 13 is rotated in the same direction or the case where the handpiece 13 is rotated in the opposite direction is short-term until the position of the current handpiece 13 is reached to the minimum value position. You can decide if you can do it in between.

Therefore, when the handpiece 13 makes one rotation and determines the minimum value of the distance of the bar 13a with respect to the metal sensor 8b (YES in step S206), the rotation processing unit determines which rotation direction can be completed in a short period of time. The rotation direction of the handpiece 13 is determined based on the result. After that, the detection result of the metal sensor 8b by the position processing unit is monitored again, and when the position of the handpiece 13 reaches the position corresponding to the minimum value, the rotation of the motor 22 is stopped (step S207).

In this way, after the handpiece 13 is rotated at least once to determine the minimum value of the distance to the bar 13a, the tip of the bar 13a is quickly reached in order to reach the position of the minimum value in a short period of time. You can avoid touching the surgeon.

FIG. 9 is a flowchart of instrument rotation control according to the third embodiment. It should be noted that steps S301 to S305 are the same as steps S101 to S105 of the first embodiment. Similar to the above, explaining with the example of the contra type handpiece 13, when the distance from the metal sensor 8b to the bar 13a is long, after gripping the grip portion 13c, the motor 22 rotates in a predetermined direction to handle the hand. The piece 13 is rotated, for example, counterclockwise (step S305).

Here, in the third embodiment, when the distance from the metal sensor 8b to the bar 13a is approaching in the position processing unit (YES in step S306), the rotation processing unit rotates the handpiece 13 counterclockwise as it is. (Step S307). On the other hand, when the distance from the metal sensor 8b to the bar 13a is long (NO in step S306), the handpiece 13 is rotated in the opposite direction (clockwise) (step S310).

Then, when the detected value of the metal sensor 8b reaches a predetermined threshold value (for example, the minimum value of the distance of the bar 13a with respect to the metal sensor 8b) (YES in step S308), the rotation of the motor 22 is stopped (step S309).
In this way, if the rotation direction of the handpiece 13 is changed according to the determination result of the distance from the metal sensor 8b to the bar 13a, the tip of the bar 13a can be prevented from touching more quickly.

Although the above-mentioned Examples 1-3 have been described with reference to an example using a metal sensor, the present invention is not limited to this example. The detection device of the present invention may be, for example, a magnetic sensor. Specifically, as shown in FIG. 10, on the outer peripheral surface of the handpiece portion 13e located in front of the grip portion 13c of the handpiece 13, for example, the magnetic material 15 is on the same side as the side on which the bar 13a is installed. (A magnet may be used) is installed. On the other hand, in the holder 8, a magnetic sensor 8e is installed at a position facing the magnetic body 15 of the handpiece portion 13e.

In this way, if the mounting position of the dental tool is detected by using the magnetic body 15 provided in the handpiece portion 13e, even if the bar is changed to a bar having a different length, for example, it is magnetic. The handpiece 13 can be rotated according to the determination result of the distance from the sensor 8e to the magnetic body 15.
Alternatively, the detection device of the present invention may detect the orientation of the tip of the dental tool from the distance of the imaged dental tool. Then, it is also possible to rotate the motor until the distance of the dental tool obtained by the imaging matches, for example, the threshold value stored in the memory.

1 ... Dental treatment chair, 2 ... Contour sheet, 3 ... Base, 4 ... Spitton, 5 ... Surgical light, 6 ... Arm, 7 ... Work table, 8 ... Holder, 8a ... Holder bottom, 8b ... Metal sensor, 8c ... Grip part, 8d ... Insertion detection part, 8e ... Magnetic sensor, 9 ... Hose storage part, 10 ... Operation part, 11 ... Syringe, 12, 13, 14 ... Handpiece, 13a ... Bar, 13b ... Head part, 13c ... Grip part, 13d ... hose, 13e ... handpiece part, 14a ... chip, 14d ... hose, 15 ... magnetic material, 20 ... instrument rotation mechanism, 21 ... mounting plate, 22 ... motor, 23 ... drive roller, 24 ... Cylinder, 24a ... Shaft, 25 ... Holding roller, 30 ... Rotation processing unit, 40 ... Position processing unit, 41 ... Tool position determination unit, 50 ... Control unit.

Claims (5)

A work table equipped with an instrument equipped with a dental tool and a holder for storing the instrument.
A detection device that can detect the mounting position of the dental tool of the instrument housed in the holder, and
It is provided with an instrument rotation mechanism for rotating the instrument housed in the holder based on the detection result of the mounting position of the dental tool by the detection device.
The detection device is a metal sensor installed in the holder and capable of detecting the distance to the dental tool.
The instrument rotation mechanism is such that the instrument housed in the holder is provided with the metal sensor at the tip of the dental tool of the instrument according to the distance from the metal sensor to the dental tool. A work table characterized by rotating until it faces. A work table equipped with an instrument consisting of a head portion for mounting a dental tool, a grip portion gripped by the operator, and a handpiece portion located in front of the grip portion, and a holder for storing the instrument. And
A detection device that can detect the mounting position of the dental tool of the instrument housed in the holder, and
An instrument rotation mechanism that rotates the instrument housed in the holder based on the detection result of the mounting position of the dental tool by the detection device.
Equipped with
The detection device is a magnetic sensor that is installed in the holder and can detect the distance to a magnetic material installed on the outer peripheral surface of the handpiece portion of the instrument.
In the instrument rotation mechanism, the instrument housed in the holder faces the instrument, and the tip of the dental tool of the instrument faces the holder according to the distance from the magnetic sensor to the magnetic body. A work table characterized by being rotated until it is magnetized. A dental treatment unit comprising the work table according to claim 1 or 2. A method of using a work table equipped with an instrument equipped with a dental tool and a holder for storing the instrument.
A metal sensor installed in the holder and capable of detecting the dental tool of the instrument stored in the holder, and the inn stored in the holder based on the detection result of the dental tool by the metal sensor. It is equipped with a motor that rotates the suspension in a predetermined direction.
A step in which the motor rotates the instrument at least once in a predetermined direction.
The step of determining the minimum distance of the dental tool with respect to the metal sensor, and
When the minimum value is determined, the instrument is rotated in the predetermined direction or the instrument is moved from the current position of the instrument to the position corresponding to the minimum value. The step of determining which of the cases of rotation in the direction opposite to the predetermined direction can be completed in a short period of time, and
A step in which the motor rotates the instrument in the determined rotation direction of the instrument,
A method of using a work table comprising a step of stopping the rotation of the instrument by the motor when the position of the rotated instrument reaches a position corresponding to the minimum value. A method of using a work table equipped with an instrument equipped with a dental tool and a holder for storing the instrument.
A metal sensor installed in the holder and capable of detecting the dental tool of the instrument stored in the holder, and the inn stored in the holder based on the detection result of the dental tool by the metal sensor. It is equipped with a motor that rotates the suspension in a predetermined direction.
A step in which the motor rotates the instrument in a predetermined direction,
When the distance of the dental tool to the metal sensor is close, the motor rotates the instrument in the same direction as the predetermined direction, whereas the distance of the dental tool to the metal sensor is long. If so, a step in which the motor rotates the instrument in a direction opposite to the predetermined direction.
The inclusion includes a step of stopping the rotation of the instrument by the motor when the position of the rotated instrument reaches a position corresponding to the minimum value of the distance of the dental tool with respect to the metal sensor. How to use the featured work table.

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