JPH0248260B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Field of Application] This invention is applicable to examination and treatment tables for dentistry and otorhinolaryngology;
Alternatively, the present invention relates to a medical examination table used for patient examination and treatment, such as an examination table for a head X-ray machine. [Prior Art] In general, such a medical treatment table includes a seat on which a patient sits, an armrest that is appropriately supported at the end of the seat to support the patient's arms, a backrest that is a backrest, and a backrest that is attached to the backrest as appropriate. A head rest supported by a patient's head to support the patient's head, etc., and most of them are configured to have a head rest that supports the patient's head, and many of them are configured such that the angle between the seat and the back rest is adjusted when the patient is seated, and the head rest (or It has an appropriate mechanism that can arbitrarily adjust the three-dimensional posture (including height and degree of inclination) of the patient's head, allowing doctors and doctors to perform various desired examinations and treatments. It has become possible to provide convenience to patients. For example, Japanese Patent Publication No. 55-37254 (Japanese Patent Application No. 52-25876) entitled ``Patient Support Device'' is one such type of medical treatment table. That is, in the case of the treatment table described in this Japanese Patent Publication No. 55-37254 "Patient Support Device", for example, regarding the posture adjustment mechanism of the headrest (patient's head), there are four holes around the pillow part (center pad). Two hemispherical additional pads are arranged side by side, and an air bag is provided at the bottom of each of them, and each of the corresponding additional pads is placed face down or raised up based on the air being taken in and out through the corresponding manual valve of each of these air bags. The above-mentioned posture of the head is arbitrarily adjusted, thereby providing convenience such as positioning the patient's oral cavity in a position convenient for examination and treatment in the case of dentistry, for example. [Problem to be Solved by the Invention] Although it is certainly possible to adjust the three-dimensional posture of the headrest (or the patient's head) with the above-mentioned medical table, the
37254, ``Patient Support Devices,'' these adjustments are made through separate manual valves, and therefore require multiple adjustments, sometimes multiple times, to obtain exactly the desired position of the patient's head. Operability, such as requiring complex and skilled operations,
There is a problem with functionality. Also, at the same treatment table,
As mentioned above, when the posture of the patient's head is adjusted by laying down or raising the additional pad, each time the posture is adjusted, the center point of the patient's head that touches the pillow part shifts to a lower position. However, problems remain in terms of discomfort for patients. Moreover, such a shift in the center point is one of the major factors that makes it difficult to obtain the above-mentioned "exactly desired posture" of the patient's head. Recently, various types of examination tables other than the above-mentioned examination table have been proposed and put into practical use, but the actual situation regarding the headrest is generally the same as above. In addition, although the above-mentioned armrests are necessary and valuable for patients during examinations and treatments, they are unnecessary and are a hindrance when getting on or off the examination table. Even. Therefore, the armrest is usually designed to be able to slide or flip up so that the doctor or assistant can set it in the position of use only during examination or treatment. This is a cumbersome and unnecessary operation for users and assistants, and some kind of improvement is desired. This invention was made in view of these conventional circumstances, and aims to provide a medical treatment table that has excellent operability and functionality and can be used without causing discomfort to patients. purpose. [Means for Solving the Problems] In the present invention, for example, the structure of the headrest is divided into a headrest main body connected to the backrest, and four headrests spaced apart in four directions from a central point that receives the patient's head. The air chambers are arranged on the headrest main body with independent air chambers, and each of these air chambers can be freely controlled by sucking and discharging air through separate air tubes provided corresponding to each of the four air chambers. a headrest air bellows whose upper surface has a three-dimensional posture determined according to the expansion and contraction of the headrest air bellows; a headrest pillow disposed on the air bellows on which the patient's head rests; and an upper surface of the headrest air bellows. a switch means for specifying the three-dimensional posture of the switch; and each operation of the switch means causes air to be sucked through each of the air tubes corresponding to the specified three-dimensional posture.
Each of the air vents is configured to include a headrest control means for simultaneously controlling the discharge of two or more air chambers of the headrest air bellows in a combined manner. [Function] In particular, the structure of the head rest air bellows,
According to the control structure of the headrest control means based on the operation of the switch means, the three-dimensional posture of the headrest pillow on which the patient's head is directly placed is shifted to a plane parallel to its current plane (i.e. When the total expansion or total contraction of the four air chambers in the air bellows is specified through the switch means, each response for all four air chambers in the air bellows is adjusted in accordance with the specified direction. Intake control is performed through the air tubes of the air bellows, or exhaust control is performed through the corresponding air tubes for all four air chambers of the air bellows. Similarly, when a change in the three-dimensional posture of the head rest pillow in a tilted manner in a certain direction is specified through the switch means, one of the air bellows corresponding to the specified direction is specified.
Intake control for one or two air chambers via corresponding air tubes and exhaust control for one or two opposing air chambers of the same air bellows via corresponding air tubes are executed simultaneously. . In other words, this not only significantly improves the operability when adjusting the three-dimensional posture of the patient's head, but also ensures that the center point of the patient's head touching the headrest pillow remains constant in any case. It means to get. [Embodiment] FIGS. 1 to 12 show an embodiment of a medical treatment table according to the present invention. FIG. 1 shows the overall configuration of the treatment table of this embodiment. As shown in FIG. 1, this medical treatment table mainly consists of a pedestal 1, a lift 2 installed on the pedestal 1, and an upper end of the lift 2 that can be moved up and down based on a switch operation described later. a seat base 3 on which a patient is seated; a backrest 5 supported by the seat 4 so that the angle between the backrest and the seat 4 can be arbitrarily set based on a switch operation described later; and both ends of the seat 4. An armrest 6 is supported by the armrest 6 to support the patient's arm, a headrest 7 is supported by the arm JA connected to the backrest 5 and supports the patient's head, and a headrest 7 is disposed on the side of the backrest 5 as shown in the figure to support the treatment concerned. Cheer switches 8 each are operated in a predetermined manner by an operator (doctor or assistant) when specifying the desired state of the chair parts (lift 2, seat 4, backrest 5, and armrest 6), and, for example, the seat A desired three-dimensional posture is specified for the headrest 7 (more precisely, the headrest pillow 73 to be described later) by being derived from a control device (to be described later) built in the base 3 or pedestal 1 via a lead cable LC as shown in the figure. The headrest switch 9 is operated in a predetermined manner (in this example, by a foot operation) by an operator (mainly a doctor) when performing the operation. Of these, the armrest 6 includes an armrest support 61 connected to the seat 4, an air chamber provided on the armrest support 61, and an upper surface of the armrest support 61 which is disposed on the armrest support 61 and has an air chamber that expands and contracts freely. An armrest air bellows 62 whose distance from the armrest support is determined, and one end close to the backrest 5 is rotatably supported by the armrest support 61, and the other end is disposed on the armrest air bellows 62. The armrest main body 63 on which the patient's arm rests is basically composed of three parts, and is synchronous with the angular shift between the seat 4 and the backrest 5 based on the operation of the steer switch 8. , and are controlled so that the posture of the armrest main body 63 at any time (the distance of its tip from the armrest support 61) is determined. FIG. 2 shows the specific structure of such an armrest 6. As shown in FIG. 2, the armrest air bellows 62 is provided with an air tube 64 that communicates with the air chamber from its lower end. The above-mentioned expansion and contraction is performed based on the intake and discharge of air through the air tube 64. The armrest main body 63 operates in the direction of arrow _F1 in the figure as the air bellows 62 expands, and operates in the direction of arrow _F2 in the figure as the air bellows 62 contracts. Further, a support member 6 disposed on the armrest support body 61 and serving as a fulcrum for rotation of the armrest main body 63 is provided.
5 and the inner wall of the armrest main body 63, a spring 67 is arranged to bias the armrest support 61 and the armrest main body 63 in the direction of mutual attraction via a wire 66a and a pulley 66b as shown in the figure. air tube 64
When the armrest main body 63 moves in the direction of arrow _F2 as air is discharged through the armrest, this movement is assisted. Note that the armrest body 63 is aligned with the arrow as shown above.
F Operates in _one direction and this is the predetermined position (distance)
When the wire 66a reaches a predetermined position, a stopper 68 fixed to a predetermined position of the wire 66a comes into contact with a stopper 69 arranged on the armrest support 61 as shown in the figure, so that the position (distance) is maintained. . FIG. 3 shows the switch configuration of the above-mentioned steer switch 8 that induces the operation of the armrest 6, and FIG. 4 shows the above-mentioned steer section (lift 2,
The outline of the main operating modes of the seat 3, backrest 5 and armrest 6) is shown below, and below, with reference to FIGS. The operation of the armrest 6 will be explained in detail. In this embodiment, as shown in FIG.
Butt Crest DOWN” Switch 82, “Lift
UP←→Lift DOWN” switch 83, and “Auto return (UP)←→Auto memory (DOWN)”
It is composed of four switches: switch 84. Among these, the "auto crest UP" switch 81 is operated by the operator in one operation (one touch).
This is a switch for automatically raising (UP) the back crest 5, which is assumed to be at the position a or c in FIG. 4, for example, to the position d in FIG. →BACK Crest DOWN switch 82 changes the position of the back crest 5 (the angle it makes with the seat 4), for example between a and b in FIG. 4, in the direction corresponding to the operator's operation. ) or down (DOWN), "LIFT UP←→LIFT DOWN"
The switch 83 moves the entire Chuer section and the list ₂ in the direction corresponding to the operation by the operator, as shown by the arrow F3 or F4 shown in FIG. ₄ , only while being operated. The "auto return (UP) ← → auto memory (DOWN)" switch 84 is a switch for switching the "auto return (UP) When operated to the "memory (DOWN)" side, the back crest 5 is automatically moved down (DOWN) to position c in Figure 4, for example, and conversely, when operated to the "auto return (UP)" side. This is a switch for automatically raising the backrest 5 to the position d in FIG. 4, for example. In this embodiment, the armrest 6
Of these switches 81 to 84, especially "auto return (UP) ← → auto memory (DOWN)"
Induced by the operation of switch 84, the arrow F ₁
Alternatively, start operation in direction _F2 (see Figures 2 and 4). That is, the air chamber of the armrest air bellows 62 described above is the air tube 6 provided therein.
4, when the above-mentioned "auto return (UP) ← → auto memory (DOWN)" switch 84 is operated to the "auto memory (DOWN)" side, the "intake"
The armrest 6 is controlled by a control device, which will be described later, so that it is ``exhausted'' when the switch 84 is operated to the ``auto return (UP)'' side. When the back crest 5 is automatically moved to the position c in FIG. 4, for example, when the
In conjunction with this, the armrest main body 63 operates in the direction of arrow _F1 in FIG. 4, and the switch 8
4 is operated to the "auto return (UP)" side,
When the backrest 5 is automatically moved to, for example, the position d in FIG. 4, the armrest main body 63 moves in the direction of arrow _F2 in FIG. 4 in conjunction with this. Note that when the armrest main body 63 operates in the direction of arrow _F1 , its limit position (limit distance) is at the stoppers 68 and 69 inside the armrest 6.
As mentioned above, the timing at which the above-mentioned "intake" control or "exhaust" control for the air chamber of the armrest air bellows 62 ends is determined by the contact position of the armrest air bellows 62 (see FIG. 2). It is controlled separately in the following manner. FIG. 5 schematically shows a part of the internal structure of the seat base 3. In FIG. 5, 31 is a hydraulic cylinder for operating the backrest 5 in the above-described manner, and 32a is a As shown in the figure, a slide bar 32b that slides in conjunction with the expansion and contraction movement of the cylinder 31 is a protruding member 33 provided on the slide bar 32a as shown in the figure.
is, for example, c in FIG. 4 of the back crest 5.
The hydraulic cylinder 3 at the position , that is, the target stop position of the backrest 5 when the switch 84 is operated to the "auto memory (DOWN)" side.
1 (assuming that this arrangement position is adjustable from the outside of the seat base 3), the hydraulic cylinder 31, and therefore the slide bar 32a, is controlled by the operation of the switch 84. When the backrest 5 reaches, for example, the position c in FIG. 4 during sliding in the direction of arrow _F5 in the figure, it is turned "on" by the contact with the protruding member 32b (thereby, it is turned on). Tsute hydraulic cylinder 3
A limit switch 34 indicates the position of the backrest 5, for example, at position d in FIG. 4, that is, when the switch 84 is operated to the "auto return (UP)" side. The hydraulic cylinder 31 is arranged in correspondence with the stroke position of the hydraulic cylinder 31 at the target stop position (assuming that this arrangement position is also adjustable from the outside of the seat base 3), and the hydraulic cylinder 31 and therefore the slide When the bar 32a slides in the direction of arrow _F6 in the figure based on the operation of the switch 84,
When the backrest 5 reaches, for example, the position d in FIG.
1 shows the limit switch (on which a stop command is applied). In this embodiment, "intake" to the air chamber of the armrest air bellows 62 is performed.
The timing at which the control or "exhaust" control ends is also
The limit switches 33 and 34 are used in common (or limit switches having the same function are arranged in parallel) for control. That is, in the control device of the armrest 5, which will be described later, when the switch 84 is operated to the "auto memory (DOWN)" side, this is detected and the "intake" control for the air chamber of the armrest air bellows 62 is performed. When the above-mentioned limit switch 33 is turned on, this is detected and the "intake" control is terminated, and when the above-mentioned switch 84 is operated to the "auto return (UP)" side, When this is detected, the "exhaust" control for the air chamber of the armrest air bellows 62 is started, and when the limit switch 34 is turned on, this is detected and the "exhaust" control is stopped. do. It should be noted that normal chewing operations such as the operation of the entire chewing section in the direction of arrow F ₃ or F ₄ (FIG. 4) by the lift 2 mentioned above, or the above-mentioned operation of the backrest 5 by the hydraulic cylinder 31 are controlled. Devices and mechanisms for doing so are well known, and illustrations and explanations thereof will be omitted here. Next, the structure of the headrest 7 of the treatment table of this embodiment will be described in detail. As shown in FIG. 1 above, this headrest body 71 includes a headrest body 71 connected to the backrest 5 via a connecting arm JA, and four air chambers disposed on the headrest body 71. A headrest air bellows 72 whose upper surface has a three-dimensional posture determined according to the free expansion and contraction of each of these air chambers, and this headrest air bellows 7.
The head rest pillow 73, which is integrally arranged on the patient's head 2 and on which the patient's head is placed, basically consists of three parts. Control is performed so that the three-dimensional posture of the upper surface of the headrest air bellows 72, ie, the headrest pillow 73, is determined at any time. 6 and 7 show the specific structure of such a headrest 7. As shown in FIG. FIG. 6 is a plan view, and FIG. 7 is a front view. As shown in FIGS. 6 and 7, the headrest air bellows 72 is provided with a Four independent air chambers 74, two on the left and two on the left and right, are spaced apart and symmetrical about the center line of the patient's head.
a, 74b, 74c and 74d are provided, and these air chambers 74a, 74b, 74c and 74
At each lower end of d, four independent air tubes 75a, 75b, 75c and 75 are provided.
d is provided. That is, this headrest 7 has air tubes 75 that communicate with the four air chambers 74a to 74d of the headrest air bellows 72.
The three-dimensional posture of the headrest pillow 73 at any time is determined according to the free expansion and contraction of each of these air chambers based on the intake and discharge of air through the air chambers a to 75d. Incidentally, the four air tubes 75a to 75d are protected by the air tube protection spring 76 at their leading-out portions from the headrest main body 71, so that no matter what state the headrest 7 is in (for example, through the connecting arm JA) Even when it is folded toward the backrest 5 side, no bending occurs that would impede the intake and discharge of the air.
Such consideration also applies to the air tubes 75a to 75a.
It is also effective in eliminating hindrances to 75d medical treatment. Further, a spring 77 is disposed between the headrest main body 71 and the headrest pillow 73 to urge them toward each other, and the air chambers of the headrest air bellows 72 are moved through the corresponding air tubes. When exhaust is controlled,
This is beginning to be supported. FIG. 8 shows the switch configuration of the headrest switch 9 that induces the operation of the headrest 7.
The correspondence between the headrest 7 and the headrest switch 9 will be outlined with reference to the drawings. As shown in FIG. 8, in this embodiment, the headrest switch 9 is a so-called cross switch 9 with four contacts that is operated in four directions of ``'', ``'', ``'', and ``'' through an appropriate lever.
1. Two-way switch 92 with two contacts that can be operated in two directions: "UP" and "DOWN", corresponding to the above-mentioned cross switch 91, switching between "auto" mode and "manual" mode. A push button switch 9 that is pressed to perform
3. With this switch 93, for example, "auto"
Lamp (light emitting diode) LED ₁ that lights up while the mode is specified, 2-way switch 92 mentioned above
A push button switch 94 is pressed to switch between "auto" mode and "manual" mode in response to It is constructed with four switches and two lamps: a lamp (light emitting diode) LED ₂ that is turned on while the device is in use. Among these, the cross switch 91 is a switch for tilting the three-dimensional posture of the headrest pillow 73 in the headrest 7 in the corresponding direction based on the operation in the direction of ``'', ``'', ``'' or ``'', respectively. , 2-way switch 9
2 of the same headrest pillow 73 based on the operation in the "UP" or "DOWN" direction, respectively.
This is a switch for raising or lowering the overall dimensional posture. In addition, the above push button switches 93 and 9
4 changes the control mode through the corresponding cross switch 91 or 2-way switch 92 between the above-mentioned "auto" mode and "manual" mode each time the pressing operation is performed. It acts to switch alternately. Here, the "manual" mode of the cross switch 91 means that the switch 91 executes the posture control regarding the above-mentioned inclination of the head rest pillow 73 only while the switch 91 is actually operated (the operation time is As the length increases, the inclination of the headrest pillow 73 also increases within its movable range. This is automatically executed for a time corresponding to a preset degree of inclination based on one operation (one touch) of the same switch 91 in a certain desired direction (a fixed inclination can always be obtained with only one touch operation). This is the control mode, and the "manual" mode of the two-way switch 92 means that the switch 92 is actually operating the posture control for the above-mentioned entire raising or lowering of the headrest pillow 73. (If the operation time becomes longer, the amount of rise or fall of the headrest pillow 73 will also increase within its movable range)
This is a control mode, and the "auto" mode means that the headrest pillow 73 is controlled by the switch 92.
The above-mentioned attitude control regarding the entire rise or fall is automatically executed for a time corresponding to a preset amount of rise or fall based on one operation (one touch) of the switch 92 in a certain desired direction. This is a control mode (in which a fixed amount of rise or fall can always be obtained with just one touch operation). 9 to 11, such a headrest 7 is built in the seat base 3 or the base 1, and is shown in FIGS.
The specific configuration of the control device that centrally executes posture control regarding the armrest 6 will now be described. First, FIG. 9 schematically shows the configuration of the air circuit of the control device. In this control device, compressed air output from an air pump P is controlled by a variable regulator R, for example.
The pressure is reduced to about 0.4 Kgf/cm ² , and this reduced pressure air is used as a driving source for the headrest air bellows 72 and armrest air bellows 62. As shown in FIG. 9, this reduced pressure air is supplied to the head rest air bellows 72 via four separate solenoid valves A ₁ , B ₂ , C ₁ and D ₁ . Four air chambers 74a-7
The air tubes 75a to 75d connected to the air tubes 75a to 75d are supplied (inhaled), and the air stored in the air chambers by the intake air is supplied to the air tubes 75a to 75d connected to the air tubes 75a to 75d, respectively.
The air is vented (exhausted) to the atmosphere through two separate solenoid valves A ₂ , B ₂ , C ₂ and D ₂ , and on the other hand, the armrest air bellows 62 is vented through one solenoid valve E ₁ . Air tube 6 leading to air chamber
The air supplied (intake) to the air tube 4 and stored in the same air chamber by this intake air is supplied to the air tube 64 through one solenoid valve provided correspondingly to the air tube 64.
It will be released into the atmosphere (exhaust) via _E2 .
That is, selective "interval" control of the solenoid valves A ₁ to E ₁ on the intake side, and control of the solenoid valves A ₂ to E 1 on the exhaust side.
Based on the "close" control of at least the valve of E ₂ corresponding to the selection, the air chamber corresponding to the selection is expanded, and the solenoid valves A ₁ to E ₁ on the intake side are expanded. "Close" control for at least the valve corresponding to the expanded air chamber, and "close" control for at least the valve corresponding to the expanded air chamber among the solenoid valves _A2 to _E2 on the exhaust side. Based on the selective "open" control, the air chamber corresponding to the selection will be contracted. Furthermore, FIGS. 10 and 11 show the configuration of an electric circuit that controls the opening/closing of each of the solenoid valves A ₁ to _{E 1} and A ₂ to E ₂ on the intake side and exhaust side of the control device. It is something that Of these, especially FIG. FIG. 11 shows the electrical connection of the entire control device including the limit switches 33 and 34 for setting each target stop position for "return", and _FIG. Examples of the internal configuration of the headrest/armrest control circuit 100 shown in FIG. 10 which directly controls the "opening/closing" aspects of ~ _E1 and _A2 ~ _E2 are shown. Note that in FIGS. 10 and 11, terminal numbers 1 to 25 of the headrest/armrest control circuit 100 are common to each other. Now, each of the above-mentioned switches 91 to 94 constituting the headrest switch 9 has an electrical structure equivalently shown in FIG. 8 (“Auto return←→
"auto memory" switch 84), target stop position setting limit switches 33 and 34, and each of the above-mentioned solenoid valves _A1 to _E1 and _A2 shown in FIG.
~ _E2 are electrically connected to the headrest/armrest control circuit 100 in the manner shown in FIG. 10, respectively. Headrest/armrest control circuit 100
As shown in FIG. 11, the headrest switch 9 has four switches (contacts) 91a, 91b, 91b, which constitute the cross switch 91.
91c and 91d, two switches (contacts) 92a that also constitute the two-way switch 92
and 92b, and these switches 91 and 9
Regarding the switches (push button switches) 93 and 94, which are the mode changeover switches, respectively, an input coupler 110 for electrically isolating these switch circuits and a circuit inside the control circuit, and two AND circuits, Consisting of one inverter and one flip-flop,
Each time the mode changeover switch 93 is operated, a signal for specifying the "auto" mode (a signal whose logic level is "1" in this example) is generated for the cross-shaped switches 91, 91a to 91d, and a "manual" mode. The first toggle circuit 121 alternately forms and outputs a signal for specifying a signal (in this example, a signal with logic level "0"), two AND circuits, one inverter, and one flip-flop. , each time the mode changeover switch 94 is operated, a signal for specifying the previous "auto" mode (in this example, a signal with logic level "1") and a "manual" mode are activated for the two-way switches 92, 92a and 92b. a second toggle circuit 122 that alternately forms and outputs a signal for specifying the mode (in this example, a signal with logic level "0"), one AND circuit, two inverters, one flip-flop, and Consisting of one timer circuit and one selector, the output signal of the toggle circuit 121 or 122 and the cross-shaped switches 91, 91a to 91
d or 2-way switch 92, 92a, 92
Mode selection circuits 131 to 1 output switch instruction signals S1 to S6 with selected contents based on the logic level contents of these signals at any time by inputting the output signals of d in the illustrated manner.
36, the above-mentioned "auto return←→auto memory" switch 84, and limit switch 33
and 34, an input coupler 140 for electrically isolating these switch circuits and the circuit inside the control circuit, and an input coupler 140 for operating the switch 84 to the "auto return" side (operating to the terminal 10 side). The first switch operation detection circuit 151 consists of a flip-flop that is "set" based on the limit switch 34 and "reset" based on the "on" of the limit switch 34, and the operation of the switch 84 to the "auto memory" side (toward the terminal 12 side). a second Chuer operation detection circuit 15 consisting of a flip-flop that is "set" based on the operation of the limit switch 33 and "reset" based on the "ON" state of the limit switch 33;
2, each switch instruction signal S1 to S6 output from the mode selection circuits 131 to 136, and the first and second Chuer operation detection circuits 151.
and 152, and compares the _contents of these signals with the contents of solenoid valve drive data to be described later _{. A2} ～ _E2
Control signal a ₁ to control the "open/close" operation of
a CPU 160 that forms and outputs e ₁ and a ₂ to e ₂ ;
A program memory 170 in which a processing procedure for causing the CPU 160 to execute such a control signal forming operation is stored in advance, and a program memory 170 that corresponds to the contents of each of the switch instruction signals S1 to S6 and the contents of each of the switch operation detection signals S7 and S8. Each solenoid valve A ₁
A solenoid valve drive data memory 180 in which solenoid valve drive data that determines the "open/close" mode of ~E ₁ and A ₂ ~E ₂ is registered and stored in advance in a table form;
While electrically isolating the CPU 160 and each solenoid valve A ₁ to E ₁ and A ₂ to E ₂ , the CPU 160
The above control signals a ₁ to e ₁ and a ₂ output from 0
~e ₂ based on each of these solenoid valves A ₁ ~E ₁ and A ₂
- an output coupler 190 that directly drives _E2 . Here, the above input couplers 110 and 140
It is assumed that each of these circuits is configured to output a signal having a logic level of "1" from its corresponding output terminal in response to the operation (on) of its corresponding switch. Under these conditions, the operation modes of the first and second toggle circuits 121 and 122, as well as the mode selection circuits 131 to 136, will be described in detail as follows. First, the first and second toggle circuits 121 and 122 will be explained. Now, these toggle circuits 121 or 122
When the Q output of the corresponding flip-flop is, for example, at the logic "0" level ("manual" mode specified state), if the corresponding switch 93 or 94 is operated (one-shot operation), the flip-flop will ,
In response to this, the AND condition of the AND circuit on the S input side is satisfied by the logic level "1" signal (pulse signal) output from the corresponding output terminal of the input coupler 110, and the input coupler 110 switches to the set state. That is, the logic level of the Q output is switched to the logic "1" level, and the "auto" mode is designated. Conversely, if the corresponding switch 93 or 94 is operated again (one-shot operation) while the Q output of the flip-flop is at the logic "1" level, the flip-flop will respond to the input coupler. 110 is switched to the reset state based on the establishment of the AND condition of the AND circuit on the R input side by the logic level "1" signal (pulse signal) output from the corresponding output terminal of 110. In other words, the logic level of the Q output returns to the logic "0" level and becomes "manual" again.
It enters the mode specification state. This operation is performed by the switch 93 or 9.
It is executed repeatedly every 4 operations. Incidentally, the lighting of the lamps LED ₁ and LED ₂ (see FIG. 8) is controlled based on the flip-flop operation described above in these toggle circuits 121 and 122, but illustration thereof is omitted here. . Next, the operation of mode selection circuits 131 to 136 will be explained. However, these circuits 131
~136 all have a common configuration,
Here, for convenience, the mode selection circuit 131 will be explained as an example. For example, if a logic "0" level signal designating the "manual" mode is applied from the corresponding second toggle circuit 122, the mode selection circuit 131 selects the A input of the selector. As a state, the logic level "1" signal output from the corresponding output terminal of the input coupler 110 based on the operation of the corresponding switch 92a (the "UP" side instruction switch of the two-way switch 92) is directly applied to the CPU 160. This is a so-called through state. That is, in this case, the switch instruction signal S1 outputted from the mode selection circuit 131 to the CPU 160 maintains the logic "1" level only while the switch 92a is operated, and the switch 92a is opened (thereby (assuming that it automatically returns to the "off" position) and transitions to the logic "0" level. Further, a second
If a logic "1" level signal designating the "auto" mode is applied from the toggle circuit 122, the mode selection circuit 131 sets the selector to the B input selection state and outputs the signal from the timer circuit. signal as the switch instruction signal S1
It will now be output to the CPU 160. Incidentally, in this case, if a signal of logic level "1" is output from the corresponding output terminal of the input coupler 110 based on the operation of the corresponding switch 92a (in this case, one shot operation is sufficient), this signal and the above The AND circuit in the toggle circuit 131 satisfies the AND condition by the logic level "1" signal output from the toggle circuit 122, and therefore the flip-flop becomes set. The above timer circuit changes its Q due to the setting of this flip-flop.
It is activated when the logic level of the output reaches the logic "1" level, and thereafter a preset timer time (particularly, this is a timer that corresponds to the desired amount of rise when the headrest pillow 73 is automatically raised entirely). This is a circuit that maintains its output signal at the logic "1" level for a period of time (set as a time), and as the flip-flop transitions to the set state, the mode selection circuit 131 automatically selects the output signal from the switch 92a. Regardless of the operation mode, the logic is “1” only during the timer time of this timer circuit.
The signal maintained at this level is output to the CPU 160 as the switch instruction signal S1. The flip-flop is reset by a signal applied through the inverter of the output of the timer circuit (ie, a signal that becomes logic level "1" upon expiration of the timer time). In the other mode selection circuits 132 to 136, operations similar to those described above are performed in response to the corresponding toggle circuit outputs and the operations of the corresponding switches. In this embodiment, as shown in FIG. 11, the above-mentioned timer circuits are separately provided for each of these mode selection circuits, and each of the switches 91a to 91d, 92a, and 92b is configured to control the headrest pillow 73. It is possible to set different timer times depending on the desired three-dimensional posture. These timer circuits are of a type whose timer time can be adjusted appropriately from the outside. Next, a specific example of the solenoid valve drive data registered and stored in the solenoid valve drive data memory 180 in advance will be shown. This solenoid valve drive data is based on the use of the current treatment table,
Alternatively, it can be set arbitrarily according to the preference of the operator (doctor or assistant) who operates it, but in this embodiment, the structure of the headrest 7 (see Figs. 6 and 7) is used. ), this has been set in the manner shown in the following table.

〔Effect of the invention〕

According to the medical examination table according to the present invention, various desired posture controls of each movable part can be quickly, accurately, and stably achieved based on simple operations by the operator (doctor or assistant).
Furthermore, these various posture controls are performed without causing any discomfort to the patient.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing the overall external configuration of an embodiment of the medical treatment table according to the present invention;
Fig. 2 is a schematic diagram schematically showing the structure of the armrest of the examination table of this embodiment, Fig. 3 is a plan view showing the structure of the chair switch of the same examination table, and Fig. 4 is a diagram of the chew section of the examination table. A schematic diagram schematically showing the operating mechanism, FIG. 5 is a plan view showing a part of the internal structure of the seat base of the same treatment table, FIG. 6 is a plan view showing the structure of the headrest of the same treatment table, and FIG. 7 Figure 8 is a front view of the headrest of the same treatment table, Figure 8 is a plan view showing the switch configuration of the headrest switch of the treatment table, Figure 9
The figure is a block diagram showing the air circuit configuration of the control device for the same treatment table, FIG. 10 is a block diagram showing the electric circuit configuration of the same control device, and FIG.
FIG. 12 is a block diagram showing the internal configuration of the headrest/armrest control circuit shown in the figure, and FIG. 12 is a schematic diagram schematically showing the operation mode of the headrest of the same examination table. 1...Pedestal, 2...Lift, 3...Seat base,
5...back crest, 6...armrest, 7...
...Headrest, 8...Cheer switch, 9...
...Headrest switch, 33, 34...Limit switch, 61...Armrest support, 62
...Armrest air bellows, 63...Armrest body, 64...Air tube, 71...Headrest body, 72...Headrest air bellows, 73...Headrest pillow, 74a to 74d
...Air chamber, 75a-75d...Air tube, 8
4... "Auto return ← → auto memory" switch, 91... Cross switch, 92... 2-way switch, 93, 94... Push button switch for mode change, 100... Headrest/armrest control circuit, 110, 140 ...input coupler,
121, 122...Toggle circuit, 131, 136
...Mode selection circuit, 151, 152...Cheer operation detection circuit, 160...COU, 170...
Program memory, 180...Solenoid valve drive data memory, 190...Output coupler, _A1 to _E1 , _A2 to _E2
... Solenoid valve, P ... Air pump, R ... Regulator.

Claims (1)

[Scope of Claims] 1. A medical treatment table comprising at least a seat on which a patient is seated, a backrest serving as a backrest, and a headrest appropriately supported by the backrest to support the patient's head; , a headrest body connected to the backrest; and a headrest body having four independent air chambers spaced apart in four directions from a central point for receiving the patient's head, disposed on the headrest body, and these four air chambers. A headrest air bellows whose three-dimensional posture on its upper surface is determined in accordance with the free expansion and contraction of each of these airs based on the intake and discharge of air through separate air tubes provided correspondingly to the air tubes; a head rest pillow disposed on the head rest air bellows on which the patient's head is placed; a switch means for specifying the three-dimensional posture of the upper surface of the head rest air bellows; and a switch means for specifying the three-dimensional posture of the upper surface of the head rest air bellows; and a headrest control means for simultaneously controlling the intake and discharge of air through each of the air tubes corresponding to the specified three-dimensional posture for two or more air chambers of the headrest air bellows. A medical treatment table that is characterized by: 2. The medical examination table according to claim 1, wherein the four air chambers of the headrest air bellows are arranged two on each side at positions symmetrical about the center line of the patient's head. 3. The headrest control means controls the intake and discharge of air through each of the air tubes corresponding to the specified three-dimensional posture for each operation of the switch means, by adjusting the air intake and exhaustion through the four air tubes of the headrest air bellows.
The medical treatment table according to claim 2, wherein multiple air chambers are simultaneously controlled. 4. The switch means includes a first switch that is operated in four directions and a second switch that is operated in two directions, and the headrest control means is configured such that the first switch is operated in two directions. When the headrest air bellows is operated in the same direction, the air intake is controlled via the corresponding air tubes for the two air chambers of the headrest air bellows, and the other two air chambers of the headrest air bellows are controlled in the same direction. When the second switch is operated, all four of the headrest air bellows are controlled in the direction in which the second switch is operated. 3. Intake control via each corresponding air tube for a chamber or exhaust control via each corresponding air tube for all four air chambers of the headrest air bellows is performed only for the time during which the air chamber is operated. The medical treatment table described. 5. The switch means includes a third switch for instructing automatic/manual switching in response to the first switch, and a third switch for instructing automatic/manual switching in response to the second switch. and a fourth switch for controlling the head restraint, when the first switch is operated on the condition that automatic is instructed through the third switch, the headrest control means is configured to control the head restraint in the direction in which the first switch is operated. When the second switch is operated on the condition that the corresponding intake control and exhaust control are each performed for a predetermined time corresponding to a preset angle, and automatic is instructed through the fourth switch, 5. The medical treatment table according to claim 4, wherein the intake control or exhaust control corresponding to the operated direction is performed for a predetermined time corresponding to a preset distance, respectively. 6. The headrest further includes a spring between the headrest main body and the headrest pillow, which biases the headrest main body and the headrest pillow in a direction to draw them together;
When the air chamber of the headrest air bellows is exhaust-controlled via its corresponding air tube,
The medical treatment table according to claim 4 or 5, which assists this. 7. The medical treatment table further includes an armrest that is appropriately supported at the end of the seat and supports the patient's arm, and the armrest includes: an armrest support connected to the seat; and the armrest support. The armrest support on the upper surface thereof is arranged to have one air chamber at the top, and the armrest support on the upper surface of the air chamber is freely expanded and contracted based on the intake and discharge of air through an air tube provided in this air chamber. an armrest air bellows whose distance from the body is determined; an armrest main body disposed on the armrest air bellows on which the arm of the patient is placed; armrest control means for controlling the air intake of the air chamber of the armrest air bellows via its air tube when the angle becomes large; and controlling the exhaust air of the air chamber of the armrest air bellows via its air tube when the angle becomes small; A medical treatment table according to any one of claims 1 to 6, comprising: 8. The medical treatment table according to claim 7, wherein the armrest main body is rotatably supported by the armrest support at one end thereof near the backrest. 9. The armrest further includes a spring between the armrest support and the armrest main body that biases them in a direction that attracts them to each other, and the air chamber of the armrest air bellows is controlled to be exhausted via the air tube. The medical treatment table according to claim 7 or 8, which assists the patient when 10 A medical treatment table comprising at least a seat on which a patient sits, a backrest serving as a backrest, and an armrest that is appropriately supported at an end of the seat and supports the arm of the patient, wherein the armrest is the seat. an armrest support connected to the armrest support; and an air chamber disposed on the armrest support, the air chamber being inhaled and discharged through an air tube provided in the air chamber. an armrest air bellows whose upper surface has a distance from the armrest support body that is determined according to the ability to expand and contract; an armrest main body disposed on the armrest air bellows and on which a patient's arm rests; In conjunction with the angle of the backrest with respect to the seat, when this angle becomes large, the air chamber of the armrest air bellows is controlled to take in air through its air tube, and when the angle becomes small, the air chamber of the armrest air bellows is controlled. A medical treatment table characterized in that it is configured to include armrest control means for controlling exhaust air via an air tube. 11. The medical treatment table according to claim 10, wherein one end of the armrest body near the backrest is rotatably supported by the armrest support. 12 The armrest further includes a spring between the armrest support and the armrest main body that urges them toward each other, and the air chamber of the armrest air bellows is controlled to exhaust through the air tube. 12. The medical examination table according to claim 10 or 11, which assists the patient when the medical treatment is performed.