JP2002248138A - Backrest bending equipment of examination table - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a backrest bending equipment of an examination table which raises up the upper parts of a backrest forward so that a patient can sit in a comfortable position at treatment or diagnosis on an examination table, and gives caudal anesthesia easily by evening up the whole backrest at caudal anesthesia. SOLUTION: This backrest bending equipment of an examination table is formed so that the backrest 2 can be crooked on a horizontal direction at the midpoint of it. The actuator of the hydraulic cylinder 2b and the like whose one end is supported on an axis by the board 1 where the backrest is fixed, and whose another end is fixed so that it can be supported on an axis at the upper parts of the bending part of the backrest. The upper parts of the backrest can be crooked on a cross direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an examination table suitable for use in the treatment and diagnosis of obstetrics and gynecology, urology, anus, and the like. In this case, the present invention relates to a backrest bending device for a medical examination table in which the backrest itself is in a horizontal state when the backrest is in a horizontal state.

[0002]

2. Description of the Related Art Conventionally, a backrest of a medical examination table as described above is formed so as to be able to be raised and lowered, and the upper part of the backrest is slightly raised above a patient's back (shoulder direction) when the patient is lying down. Was bent forward.

[0003]

In such a state where the backrest is lying down, the upper part of the patient's back is in an upright state. There was a problem that it was troublesome to go to another examination bed and then move to the examination table, and that a burden was placed on doctors and nurses.

The present invention has been made to solve the above-mentioned problem, and an object thereof is to provide a state in which the upper part of the backrest is raised toward the front so as to be in a comfortable posture during treatment and diagnosis at the examination table. When performing sacral anesthesia, the entire backrest is horizontal so that it is easy to perform sacral anesthesia and provides a backrest bending device for the examination table that does not burden doctors and nurses. I'm in a hurry.

[0005]

SUMMARY OF THE INVENTION A backrest bending apparatus for a medical examination table according to the present invention achieves the above-mentioned object, and the means is formed at a substantially middle portion of the backrest so as to be horizontally bendable. An actuator such as a hydraulic cylinder, one end of which is pivotally supported by the substrate to which the backrest is attached, and the other end of which is pivotally supported above the bent portion of the backrest, is attached in the front-rear direction. It is formed to be bendable.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a backrest bending device for a medical examination table according to the present invention. A is a pedestal, and B is an examination table attached to the pedestal A so as to be vertically movable and rotatable. The examination table B is provided with a backrest 2 attached to the substrate 1 so as to be able to bend in the lower horizontal direction, a waist rest 3 fixed to the substrate 1, and a pivotable attachment to the substrate 1. A seat plate 4, an armrest 5 attached to both sides of the backrest 2 so as to be displaceable in a horizontal or vertical state, and a lateral rotation with respect to the base 1 to open the crotch of the patient; Crotch support 6, a lower leg support 7 rotatably attached to the crotch support 6 in a vertical direction,
And a waste tray 8 mounted on the lower surface of the seat plate 4 so as to be vertically movable.

The overall operation is as follows. That is, FIG. 1 shows a state in which the patient sitting on the examination table B faces the doctor, but before the patient faces the doctor, as shown in FIG.
The patient is at the patient introduction position, which is a position rotated by degrees, and the patient is seated on the examination table B in this state. This is because the patient feels shame when sitting down from the position facing the doctor (FIG. 1), so that the patient is to be seated from the side (120 degrees angle position) with respect to the doctor.

[0008] The elderly can be easily seated by sitting on the armrest 5 as a clue for the patient to sit. When a patient moves from a wheelchair or a stretcher to the examination table of the present invention, the patient can be erected as shown by the solid line in FIG. Then, in a state where the patient is seated, the examination table B is rotated by 120 degrees with respect to the pedestal A so as to face the doctor. At this time, the patient places the waist portion on the seat plate 4 and the crotch portion on the crotch support 6, so that the calf portion comes into contact with the lower limb support 7.

In this state, when the doctor operates the backrest tilt switch from the foot pedal (not shown) or the switch group 2a arranged on the side surface of the board 1,
The backrest 2 starts to fall down. Next, when the footrest or the open leg switch of the switch group 2a is operated from the state in which the backrest 2 is overturned (FIG. 3), the crotch support 6 is shifted in the lateral direction, and the patient's foot is moved from the ischial portion. The legs are opened horizontally (FIG. 4).

In this state, since the seat plate 4 is in the way (FIG. 5), when the foot pedal or the seat plate rotating switch in the switch group 2 is operated, the waste tray 8 first descends, and then the seat The plate 4 starts rotating backward and is accommodated on the back side of the waist rest 3 (FIG. 6). Thereafter, the filth tray 8 rises and stops at a position near the lower part of the crotch part of the patient (FIG. 7).

FIG. 8 shows a state in which the patient is laid down when performing sacral anesthesia before medical treatment or when recovering after the examination until the anesthesia is awakened. That is, by rotating the crotch support 6 in the horizontal direction, not in the leg-spreading direction, in the state of FIG. Since the patient is horizontal with respect to the patient, the patient can be in a bed state as a whole and the patient can be supine.

In the description of the above-described operation, the case where the backrest 2 falls down, the crotch rest 6 is opened, the seat plate 4 is rotated, and the waste tray 8 is moved by different operations has been described. However, these operations may be performed as a series of operations, that is, a so-called preset switch may be operated once to automatically perform the operations as a series of operations. Also,
Returning to the state of FIG. 1 can be performed by performing an operation reverse to the above-described operation.

Next, a specific structure for performing the above-described operation will be described with reference to FIGS. FIG. 9-
FIG. 11 shows a state in which the substrate 1 is folded down, that is, when the substrate 1 is folded down, the backrest 2, the waist rest 3, the seat plate 4 and the crotch rest 6 fixed to the substrate 1 are also fallen down. 9 is a perspective view seen from the crotch support 6 side, FIG. 10 is a perspective view seen from the backrest 2 side, and FIG. 11 is a perspective view seen from the back side of the backrest 2. In addition, in the illustration, the seat plate 4
Is shown in a state rotated to the back side of the waist rest 3.

The pedestal A incorporates a mechanism for vertically moving and rotating the substrate 1 on the examination table B in the same manner as in the prior art. And the position where the patient sits on the examination table B,
A potentiometer R1 for detecting the rotation of the chair for detecting the position facing the doctor is attached.

The backrest 2 is configured to rotate in a rising direction by applying a hydraulic pressure to a hydraulic cylinder 1a mounted between the backrest 2 and the hydraulic cylinder 1a, and to fall down by a pair of springs 1b when the hydraulic pressure is released. . A potentiometer R2 for detecting the elevation angle of the backrest 2 is attached to the rotation fulcrum of the backrest 2.

Reference numeral 9 denotes a leg opening motor for opening the crotch support 6 fixed to the base 1, and is connected to a leg opening mechanism 10 described later in detail via a universal joint 9a. Further, a potentiometer R3 for detecting a leg opening angle of the crotch support 6 is attached to the leg opening motor 9 via a gear.
The leg opening motor 9 and the leg opening mechanism 10 are provided as a left and right pair for driving the respective crotch supports 6.

Reference numeral 11 denotes a seat plate motor for rotating the seat plate 4 fixed to the base 1 to rotate to the back side of the waist rest 3, and converts the rotation direction of the motor 11 by 90 degrees; A seat plate rotating shaft 12a through a gear box 12 for deceleration
It is connected to the. A potentiometer R4 is attached to the other end of the seat plate rotation shaft to detect the amount of rotation of the seat plate.

Reference numeral 13 denotes a hydraulic cylinder for vertically moving the waste tray 8, one end of which is supported by the substrate 1, and the other end of which is supported by a waste tray link mechanism 14, which will be described in detail later. A potentiometer R5 for detecting the height position of the waste tray 8 is attached to the rotation shaft of the link mechanism 14.

Reference numeral 15 denotes one end pivotally supported by a part of the leg opening mechanism 10, and the other end also pivotally supported by a crotch support link mechanism 16 which will be described in detail after being attached to a part of the leg opening mechanism 10. It is a gas cylinder. A proximity switch S that is turned on when the crotch support 6 and the lower limb support 7 are bent is attached to the crotch support link mechanism 16. The gas cylinder 15 and the link mechanism 16 for crotch receiving are provided with a pair of right and left for driving the respective lower leg receivers 7.

Next, one of the pair of leg opening mechanisms 10 will be described in detail with reference to FIGS. The output shaft of the motor 9 fixed to the substrate 1 is connected to the universal joint 9a, and the output side of the universal joint 9a passes through the hole of the guide plate 10a fixed to the substrate 1 and is fixed to the guide plate 10a. Connected to the pinion gear means 10b. A guide roller 10c is mounted on the pinion gear means 10b, and the guide roller 10c is movable only in the vertical direction so that a rack 10d meshed with the pinion in the pinion gear means 10b is sandwiched. Installed as

An arc-shaped guide groove 10e is formed in the guide plate 10a, and a guide pin 10f projecting from the rack 10d is guided in the guide groove 10e. A crotch support link mechanism 16 to which the crotch support 6 and the lower limb support 7 are mounted is attached to the rack 10d. In addition, 10 g is rack 1
It is a cover that covers Od.

In the drive mechanism 10 constructed as described above, when the motor 9 rotates, the pinion in the pinion gear means 10b rotates via the universal joint 9a, so that the rack 10d meshed with the pinion is driven by the guide roller 10c. At this time, since the guide pin 10f of the rack 10d is guided by the guide groove 10e of the guide plate 10a, the rack 10d moves vertically along the guide groove 10e. Becomes

Since the crotch support 6 and the lower limb support 7 are attached to the rack 10d via the crotch support link mechanism 16, the crotch support 6 and the lower limb support 7 open the crotch of the patient on which the patient is placed. And the legs will be closed. Note that, since the curved shape of the guide groove 10e is such that the leg can be opened with the patient's crotch joint as a fulcrum, the leg opening direction does not become a forceful leg opening direction for the patient. It is. Further, when the motor 9 rotates, a resistance value corresponding to the rotation amount of the motor 9 is detected by the potentiometer R3, so that the leg opening angle can be known by monitoring this resistance value.

Next, the details of the crotch support link mechanism 16 will be described with reference to FIG.
3, FIG. 15 to FIG. One (left side) of the crotch support 6 supports the other end of the first link 16a whose one end is pivotally supported by the rack 10d in the leg opening mechanism 10, and is separated from the first link 16a of the rack 10d. The cylinder portion of the gas cylinder 15 having the discharge rod portion pivotally supported at a position which is rotatably mounted at a predetermined angle in the horizontal direction with respect to the first shaft rod 16c which is pivotally supported.

The two lower limb supports 7 are mounted so as to be rotatable by a predetermined angle in the horizontal direction with respect to a long shaft 16e supported at the tip of an arm 16d supported by the first shaft 16c. Have been. An arm 16d 'similar to the arm 16c is supported at the other end of the long shaft 16e, and a second shaft 16c' is supported at the other end of the arm 16d '. ′, The other (right) crotch support 6 is attached so as to be rotatable by a predetermined angle in the horizontal direction.

Note that one end of a second link 16g disposed substantially parallel to the first link 16a is connected to the gas cylinder 1
5 of the rack 10 at the same portion where the protruding rod 5 is pivotally supported.
d, and the other end is supported by an intermediate portion of the arm 16d.

Further, when the second link 16g is in a state parallel to the first link 16a, the first link
An engagement piece 16h to be engaged with the link 16a is attached, and a proximity switch S for detecting the engagement piece 16h is attached to the first link 16a when the engagement piece 16h is engaged with the first link 16a. Have been. A cover 16i covers the entire crotch receiving link mechanism 16.

Next, the operation of the crotch support link mechanism 16 will be described. When the rack 10d shown in FIG. 13 is positioned above the guide plate 10a, that is, when the crotch support 6 is in the closed state, the first and second links 16a and 16g are in a substantially parallel state. And
Since the shafts 16c and 16c 'are close to each other, the patient's foot is in a closed state. Arm 1
Since 6d and 16d 'are in a state substantially perpendicular to the first link 16a, the crotch support 6 and the lower limb support 7 are in a right angle state, so that the patient's leg is bent at a right angle at the knee. . In this state, since the engagement piece 16h is close to the proximity switch S, the switch keeps the ON state and notifies that the switch is in the bent state.

In this state, when the motor 9 is driven to lower the rack 10d along the guide groove 10e of the guide plate 10a as described above, the first and second links 16a pivotally supported by the rack 10d. , 16g and the gas cylinder 15 are displaced obliquely downward, so that the crotch support 6 and the lower limb support 7 attached thereto are opened as shown in FIG. In this state, the first and second
Since the links 16a and 16g maintain a parallel state,
The proximity switch S detects that the crotch support 6 and the lower limb support 7 are in a right angle state.

In order to bring the patient's feet into a bed state parallel to the backrest 2 in the state shown in FIG.
When the operating rod 15a of the gas cylinder 15 is operated and the discharge rod is housed in the cylinder and contracted, a portion is pulled downward at a shaft fulcrum between the cylinder and the first link 16a, and the first and second links 16a are pulled. , 16g is broken and the crotch support 6 is pushed down.

As a result, as shown in FIGS. 16 and 17,
The first link 16a and the arm 16d are substantially linear, and the crotch support 6 and the lower limb support 7 are in a horizontal state. Therefore, the backrest 2, the waist support 3, the crotch support 6, and the lower limb support 7 are generally horizontal. It is in a bed state because it is in a state. In this state, when the engagement piece 16h is separated from the proximity switch S, the proximity switch S notifies that the crotch support 6 and the lower limb support 7 are in a horizontal state, and the leg opening operation in this state is performed. A prohibition signal is sent that will not be performed.

To return from the bed state to the state shown in FIG. 13, when the operating rod 15a is operated to extend the gas cylinder 15, the first and second parallel links 16a and 16g are set.
Return to the parallel state, the crotch support 6 and the lower limb support 7 are returned to the right angle state. In this state, the proximity switch S is turned on, and the leg opening operation can be performed.

Next, the drive mechanism of the seat plate 4 will be described. The seat plate 4 is fixed to a rotating shaft 12a whose angle is converted to 180 degrees by a gear box 12 connected to a motor 11 for the seat plate. Also, the gear box 12 of the rotating shaft 12a
A potentiometer R4 is attached to the tip on the opposite side. When the seat plate motor 11 is rotated,
The rotation of the rotation shaft 12a causes the seat plate 4 to rotate approximately 180 degrees, and from the state of FIGS. 18 and 19 to the state of FIGS. This rotation angle can be known by the potentiometer R4.

Next, the structure of the link mechanism 14 for moving the waste tray 8 up and down will be described. Waste tray 8
One end of a first parallel link 14a is pivotally supported at both ends on the base side, and the second parallel link 14b is pivotally supported via an auxiliary piece 14c. On the other hand, the other ends of the first and second parallel links 14a and 14b are pivotally supported by the board 1, and a potentiometer R5 is attached to the first parallel link 14a. A discharge rod of a hydraulic cylinder 13 whose one end is supported by the base plate 1 is supported by the first parallel link 14a or a protruding piece 14d that protrudes at a right angle.

In the waste tray link mechanism 1 configured as described above, when the hydraulic pressure is pulled from the hydraulic cylinder 13, the discharge rod protrudes, and the waste tray 8 is positioned below in a horizontal state (see FIGS. 5 and 20). . In this state, the hydraulic cylinder 1
When the hydraulic pressure is supplied to the cylinder 3, the discharge rod is sucked into the cylinder and contracts.

The height position of the waste tray 8 can be known from the resistance value of the potentiometer R5 (see FIGS. 20 and 21). The tray of the waste tray 8 is formed so as to be able to be pulled out by a desired amount in the front-rear direction (left direction in FIGS. 18 and 19). Further, a shielding plate 14e protruding upward is integrally formed on an extension of the auxiliary piece 14c, and when the seat plate 4 is rotated to the back side of the hip support 3, the shielding plate 14e is formed on the back side of the seat plate 4. The shielding plate 14e prevents the waste discharged from the patient from adhering to the seat plate 4 and also prevents the waste from dripping on the floor or the like.

Next, a configuration in which the upper part of the backrest 2 is angled from a horizontal state to perform sacral anesthesia and the like will be described. The cylinder side of the hydraulic cylinder 2b is pivotally supported by a hanging piece 2a protruding from the lower surface of the backrest 2, and the discharge rod side is pivotally supported above the backrest substrate. The tilt fulcrum portion of the backrest 2, to which the potentiometer R2 is attached, is formed to be vertically bendable.

With this configuration, when oil is supplied to the hydraulic cylinder 2b and the discharge rod projects, the backrest is bent upward from the bendable portion of the backrest (FIG. 23). When the patient is pulled out, the backrest 2 is in a horizontal state due to the weight of the patient in the lying state (FIG. 22).
Therefore, the sacral anesthesia can be easily performed by setting the entire backrest 2 in a horizontal state as shown in FIG.

Next, the overall circuit configuration will be described with reference to the block diagram of FIG. Reference numeral 20 denotes a switch using a foot pedal or the like, and a preset switch SW1 and a switch group S for fine adjustment or individually driving a motor or a hydraulic cylinder.
W2. Reference numeral 21 denotes a CPU, a ROM 21b in which the movement of the examination table B set in advance by the manufacturer is stored, and an RA which is stored in each hospital.
M21a is connected. Reference numeral 22 denotes a motor control circuit for controlling energization and cutoff of the motor, and reference numeral 23 denotes a hydraulic control circuit for controlling supply and discharge of oil pressure to the hydraulic cylinder.

Next, the operation of operating the preset switch SW1 to shift the patient from the state of sitting on the examination table A to the examination state will be described with reference to the flowcharts of FIGS. First, when the preset switch SW1 is operated in a state where it is confirmed that the patient is sitting on the examination table B at a position rotated by 120 degrees with respect to the doctor, the motor provided on the base A is controlled via the motor control circuit 22. The power is supplied, and the examination table B rotates (step S1).

When the motor starts rotating, the potentiometer R1 outputs the rotation angle of the examination table B.
The PU 21 monitors whether or not the examination table B has reached a rotation angle of 120 degrees (step S2). When the CPU 21 detects that the examination table B has been rotated by 120 degrees, the motor control circuit 22 turns on the motor. And the backrest 2 is discharged through the hydraulic control circuit 23 to stop the backrest 2 from falling (step S3).

When the backrest 2 starts to fall, the potentiometer R2 outputs the falling angle of the backrest 2.
The PU 21 monitors whether the reclining angle of the backrest 2 has reached a predetermined angle (step S4), and when the CPU 21 detects that the backrest 2 has reached the predetermined angle, the PU 21 discharges oil from the hydraulic cylinder 1a. Is stopped via the hydraulic control circuit 23 to stop the backrest 2 from falling down.

Next, since the energization of the motor 9 for performing the leg opening is started via the motor control circuit 22, the leg opening operation of the crotch support 6 is performed by the above-described operation of the leg opening mechanism 10 (step S5). . When the rotation of the motor 9 is started, the potentiometer R3 outputs the leg opening angle, so that the CPU 21 monitors whether the leg opening angle of the leg opening mechanism 10 has reached a predetermined angle (step S6). CP
When U21 detects that the leg opening mechanism 10 has reached the predetermined leg opening angle, the power supply to the motor 9 is stopped via the motor control circuit 22 to stop the legs of the crotch support 6, and the waste tray 8 is lowered. Of oil to the hydraulic cylinder 13 is started via the hydraulic control circuit (step S7).

When the discharge of oil from the hydraulic cylinder 13 is started, the waste tray link mechanism 14 lowers the waste tray 8 by the above-described operation (step S).
8). When the hydraulic cylinder 13 starts driving, the potentiometer R5 outputs the lowered position of the waste tray 8, so that the CPU 21 monitors whether the lowered position of the waste tray 8 by the link mechanism 14 has reached a predetermined position (step). S9) When the CPU 21 detects that the waste tray 8 has reached the predetermined position, the drainage of the oil from the hydraulic cylinder 13 is stopped via the hydraulic control circuit 23, and the descent of the waste tray 8 is stopped.

Next, the motor 11 for rotating the seat plate 4 is energized via the motor control circuit 22 to move the seat plate 4
(Step S10). Motor 11
Starts rotating, the potentiometer R4 outputs the rotation position of the seat plate 4, so that the CPU 21 monitors whether the rotation angle of the seat plate 4 has reached a predetermined angle (step S).
11) When the CPU 21 detects that the seat plate 4 has reached a predetermined angular position, the power supply to the motor 11 is stopped via the motor control circuit 22 to stop the seat plate 4 and the hydraulic cylinder 13 Oil supply is started via the hydraulic control circuit 23.

When the supply of oil to the hydraulic cylinder 13 is started, the waste tray link mechanism 14 raises the waste tray 8 (step S12). Hydraulic cylinder 13
Starts driving, the potentiometer R5 outputs the raised position of the waste tray 8, so the CPU 21 monitors whether the raised position of the waste tray 8 by the link mechanism 14 has reached a predetermined position (step S13). CPU 21
Detects that the waste tray 8 has reached the predetermined position, the supply to the hydraulic cylinder 13 is stopped via the hydraulic control circuit 23, and the waste tray 8 is stopped at the predetermined height position (step S14).

Since this state is the examination position, the doctor can examine the patient. However, when a doctor finely adjusts the up-and-down angle of the backrest 2, the open leg angle of the crotch support 6, and the height position of the waste tray 8. By operating each switch of the individual switch group SW2, each component can be adjusted.
Further, it is also possible to individually control each component and set it at the examination position without performing the continuous operation by the preset switch SW1.

Further, the link mechanism 16 for crotch support described above
Is operated to bring the crotch support 6 and the lower limb support 7 into a horizontal state as shown in FIG. 17, the proximity switch S is turned off, and the signal from the proximity switch S is When supplied to the CPU 21,
Even if the preset set switch SW1 and the individual switch group SW2 are operated, the CPU 21
Signals from W1 and W2 are not accepted, thereby preventing equipment failure and danger to patients.

In the above-mentioned examination state, when performing sacral anesthesia, it is difficult to perform the operation when the patient's back is in a bent state. Therefore, the oil of the hydraulic cylinder 2b is discharged to accommodate the discharge rod, and the upper part of the backrest 2 is stored. The sacral anesthesia can be easily performed by setting the to a horizontal state.

The hydraulic cylinder 1a for raising and lowering the backrest, the hydraulic cylinder 13 for the waste tray, and the hydraulic cylinder 2b for raising and lowering the backrest are not limited to single-acting hydraulic cylinders. A double-acting hydraulic cylinder may be used, and another actuator such as a motor may be used for the hydraulic cylinder, or manual operation may be performed.

[0051]

As described above, according to the present invention, the backrest is formed so as to be able to bend in the horizontal direction at a substantially middle portion thereof, and one end is pivotally supported by the substrate on which the backrest is mounted, and the other end is supported by the backrest. An actuator such as a hydraulic cylinder that is pivotally supported above the bent portion is attached, and the upper portion of the backrest is formed to be bendable in the front-rear direction. The upper part of the backrest should be in the upright position. When performing sacral anesthesia, the entire backrest can be leveled, making it easier to perform sacral anesthesia and placing a burden on doctors and nurses. It has the effect that there is no.

[Brief description of the drawings]

FIG. 1 is a perspective view of a medical examination table facing a doctor.

FIG. 2 is a perspective view of the examination table in a state where a patient is seated.

FIG. 3 is a perspective view of a state in which the examination table is folded down.

FIG. 4 is a perspective view of the above-described open leg state.

FIG. 5 is a perspective view of the same waste tray in a lowered position.

FIG. 6 is a perspective view showing a state in which the seat plate is turned to the back side of the hip support.

FIG. 7 is a perspective view of the examination state in which the waste tray is raised.

FIG. 8 is a perspective view of a bed state.

FIG. 9 is a perspective view including a pedestal as viewed from the crotch receiving side of FIG. 3;

FIG. 10 is a perspective view including a pedestal as viewed from a backrest side of the same.

FIG. 11 is a perspective view including a pedestal viewed from the back side of the backrest.

FIG. 12 is a perspective view of only a leg opening mechanism portion.

FIG. 13 is a perspective view showing a closed leg state.

FIG. 14 is a side view of the same.

FIG. 15 is a perspective view showing an open leg state.

FIG. 16 is a perspective view of only a constituent part in which a crotch support and a lower limb support are placed in a parallel state.

FIG. 17 is an overall perspective view of the same.

FIG. 18 is a side view showing a state where the waste tray is in a raised position.

FIG. 19 is a perspective view of the same.

FIG. 20 is a side view showing a state where the waste tray is at a lowered position and the seat plate is rotated.

FIG. 21 is a side view showing a state where the waste tray is lifted from the above state.

FIG. 22 is a side view showing a configuration for bending the upper part of the backrest.

FIG. 23 is a side view showing a state of being bent from the above state.

FIG. 24 is a block diagram showing a circuit configuration of the entire system.

FIG. 25 is a flowchart showing the operation of the above circuit.

FIG. 26 is a flowchart showing the continuation of the above.

[Explanation of symbols]

 Reference Signs List A Pedestal B Examination table 2 Backrest 3 Waist rest 4 Seat plate 6 Crotch rest 7 Lower limb rest 8 Soil tray 9,11 Motor 10 Leg opening mechanism 13 Hydraulic cylinder 14 Soil tray link mechanism 15 Gas cylinder 16 Crotch support link mechanism R1 ~ R5 Potentiometer S Proximity switch

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4C341 MM13 MM15 MN07 MN08 MN13 MN14 MP03 MP05 MQ02 MQ07 MQ08

Claims (1)

[Claims] 1. A backrest is formed so as to be able to bend in the horizontal direction at a substantially middle portion thereof, one end of which is pivotally supported by a substrate to which the backrest is attached, and the other end of which is pivoted above the bent portion of the backrest. A backrest bending device for an examination table, wherein an actuator such as a supported hydraulic cylinder is mounted, and an upper portion of the backrest is formed to be bendable in the front-rear direction.