JPH0431275B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to medical tables such as delivery tables and treatment tables.

[Summary of the invention]

The present invention provides a medical table in which a first driving means for rotating a backrest part and a second driving means for rotating a crotch receiving part are interlocked to adjust the angle formed by the backrest part and the crotch receiving part. The backrest and crotch support can be rotated while maintaining a substantially constant angle.

[Conventional technology]

A conventional delivery table has a backrest part and a seat part that are rotatably connected to each other, and the seat part is integrally provided with a crotch support part. The backrest part and the seat part are rotated to change the angle formed by the backrest part and the crotch support part, so that the patient's posture becomes suitable for childbirth or medical examination.

[Problem that the invention seeks to solve]

During childbirth, etc., after the patient's posture is once set to a posture suitable for childbirth, it may be necessary to rotate the patient's entire body forward or backward for internal examination or the like.

In this case, according to the above-mentioned conventional technology, it is necessary to rotate the backrest part and the seat part separately to rotate the patient's body forward or backward. But somehow it collapses.

Therefore, there is a drawback that the childbirth position must be reset after the internal examination, etc. is completed.

SUMMARY OF THE INVENTION The present invention therefore seeks to provide a treatment table that can eliminate the drawbacks of the above-mentioned conventional techniques.

[Means for solving problems]

In the present invention, a backrest portion is disposed on one end side of the seat portion so as to be rotatable with respect to the seat portion, and a crotch support portion on the other end side of the seat portion is rotatable with respect to the seat portion. A first driving means that can rotate the backrest portion relative to the seat portion without rotating the crotch support portion relative to the seat portion; a second drive means capable of rotating the crotch support portion relative to the seat portion without rotating the backrest portion relative to the seat portion; the first drive means; and the second drive means; interlocking means for interlocking the first driving means and the second driving means, and when the first driving means and the second driving means are brought into an interlocking state by the interlocking means, the seat portion is interposed between them. The backrest portion and the crotch support portion are configured to rotate relative to the seat portion while maintaining an angle formed by the backrest portion and the crotch support portion substantially constant. This is what I did.

[Effect]

According to the present invention, the first driving means allows the backrest portion to be rotated relative to the seat portion without rotating the crotch support portion relative to the seat portion, and the second driving means Not only can the crotch support part be rotated relative to the seat part without rotating the backrest part relative to the seat part, but also the first driving means for rotating the backrest part by the interlocking means. and a second driving means for rotating the crotch receiving part to rotate the backrest part and the crotch receiving part with respect to the seat part while maintaining the angle formed by the two substantially constant. be able to.

〔Example〕

An embodiment in which the present invention is applied to a delivery bed will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, the delivery table 1 has a human body support part 3 supported on a pedestal 2 so as to be movable up and down (in the directions of arrows a and b).

The human body support section 3 includes a backrest section 4 that is divided from each other.
The backrest 4 and the crotch supports 6a, 6b are respectively attached to the seat 5 so as to be vertically rotatable.

A pair of left and right armrests 7 are rotatably attached to both sides of the backrest portion 4.
A pair of left and right anger handles 8 are provided on both sides of the handle. A heel rest 10 is attached via an attachment member 11 to the lower portion of each of the left and right crotch receivers 6a, 6b.

An auxiliary stand 12 is provided within the frame 13 at the bottom of the human body support section 3 so as to be slidable back and forth (in the directions of arrows e and f in FIGS. 1 and 2). This auxiliary table 12 rotates the backrest 4 in the direction of arrow c from the state shown in FIG. When the state is changed to the state shown in Figure 2 for
This facilitates delivery assistance, etc., which is pulled out from inside the frame 13 forward (in the direction of arrow e in FIGS. 1 and 2).

Next, the drive mechanism of the backrest portion 4 and the crotch supports 6a, 6b will be explained based on FIGS. 3 to 6.

As shown in FIG. 3, the backrest part 4 and the crotch support part 6
a and 6b are divided from the seat part 5, and the seat part 5
It is made up of different parts.

The seat part 5 has a plurality of attachment parts 9, and by attaching the attachment parts 9 to each of the rotation fulcrum shafts 15 to 20, the seat part 5 is attached to each of the rotation fulcrum shafts 15 to 20.
is supported by

The backrest portion 4 has a pair of rotating arm portions 21 and 22.
are integrally provided, and these rotating arm parts 21, 22
are rotatably attached to the rotation fulcrum shaft 15 and the rotation fulcrum shaft 18, respectively. The backrest portion 4 also includes a rotating arm portion 23 on which a piston rod 31 of a hydraulic cylinder 30 that drives the backrest portion 4 is pivotally supported.
are integrated.

The hydraulic cylinder 30 is a double-acting cylinder, and as shown in FIG. 4, is attached to a mounting portion 124 provided on the frame 13 via a pin 14 so as to be able to swing up and down. The tip of the piston rod 31 of the hydraulic cylinder 30 is pivotally supported by the pivot arm 23 of the backrest 4 via a pin 32.

The crotch receiving portions 6a, 6b are fixed to the tip portions 27 of one arm portions 24a, 25a of a pair of left and right rotating arm members 24, 25 that are rotatably attached to the rotation fulcrum shafts 19, 20. A drive member 40 is attached to the other arm portions 24b, 25b of the rotating arm members 24, 25.

As shown in FIGS. 3 and 5, the driving member 40 has its distal end portions 40a and 40b pivotally supported by the arm portions 24b and 25b of the rotating arm members 24 and 25, respectively, via a shaft 26, The rotating arm member 2 has a pair of mounting portions 41 provided approximately in the middle thereof, which are pivotally supported on the rotating fulcrum shafts 16 and 17.
8 and 29 via a shaft 33, it is configured to be movable in the directions of the fifth arrows e and f in FIG.

In addition, as shown in FIG. 5, the arm portion 24b,
The length l ₁ between the rotation fulcrum shafts 19, 20 and the shaft 26 in the rotation arm members 28, 25b, and the length l between the rotation fulcrum shafts 16, 17 and the shaft 33 in the rotation arm members 28, 29. ₂ , and the lengths l ₁ and l ₂ are also equal to the length l ₃ between the rotation fulcrum shafts 15, 18 and the shaft 32 in the rotation arm member 23 shown in FIG. It is configured.

A piston rod 36 of a hydraulic cylinder 35 that drives the driving member 40 is connected to a pin 37 of the driving member 40.
It is rotatably mounted by.

The hydraulic cylinder 35 is a double-acting cylinder that is the same as the hydraulic cylinder 30 that drives the backrest 4,
It is pivotably supported by a mounting part 43 provided at the lower part of the seat part 5. and hydraulic cylinder 35
The inner space 35a on the side where the piston rod 36 is not arranged is interconnected with the inner space 30a on the side where the piston rod 31 of the hydraulic cylinder 30 is not arranged via electromagnetic valves 57 and 58, as shown in FIG. has been done.

Next, the operation of the drive mechanism for the backrest 4 and the crotch supports 6a and 6b constructed as described above will be explained.

First, when switch A (not shown) is turned on to tilt the backrest 4 in the direction of arrow c in FIGS. 1 and 4, the solenoids 63b and 66b of the solenoid valves 63 and 66 in FIG. and spool 63
a, 66a moves in the direction of arrow e in FIG.
As a result, oil is pumped up from the tank 82 through the suction filter 83 by the constant displacement hydraulic pump 80 to which the electric motor 81 is connected, and the check valve 8
4 to the solenoid valve 66 is applied to the internal space 30a of the hydraulic cylinder 30 through the solenoid valve 66, the variable throttle valve 78, and the check valve 101.

By applying hydraulic pressure to the internal space 30a, the piston 34 and piston rod 31 of the hydraulic cylinder 30 move in the direction of arrow e in FIGS. 3, 4, and 12. As a result, the rotating arm member 23 of the backrest 4 is pushed by the piston rod 31 and rotated in the direction of the arrow g in FIG. c.
rotated in the direction.

On the other hand, as the piston 34 moves in the direction of arrow e, the oil discharged from the internal space 30b of the hydraulic cylinder 30 is returned to the tank 82 through the electromagnetic valve 63 and the variable throttle valve 75.

Next, when switch A is turned off when the backrest 4 reaches the desired inclination angle, the solenoids 63b and 66b of the solenoid valves 63 and 66 are de-energized and the spool 6
3a and 66a are the springs 63 in the direction of arrow f in FIG.
It is moved by the spring force of c and 66c. As a result, the electromagnetic valves 63 and 66 become inactive, and the rotation of the backrest 4 is stopped.

Next, when switch B (not shown) is turned on to raise the backrest 4 in the direction of arrow d in FIGS.
5b is excited and the spools 64a and 65a are
It is moved in the direction of arrow e in Figure 2. As a result, the pressure oil supplied from the hydraulic pump 80 is transferred to the solenoid valve 64,
It is applied to the internal space 30b of the hydraulic cylinder 30 through the variable throttle valve 76 and the check valve 98, and the piston 34 and the piston rod 31 are
Movement in the direction of arrow f in FIGS. 12 and 12 is performed.

Along with this, the rotating arm portion 23 of the backrest portion 4
is pulled by the piston rod 31 and rotated in the direction of arrow h in FIG.
Oil discharged from Oa is returned to tank 82 through solenoid valve 65 and variable throttle valve 77. When the switch B is turned off when the backrest 4 reaches the desired angle of inclination, the solenoids 64 of the solenoid valves 64 and 65
b, 65b is de-energized and the spools 64a, 6
5b is moved in the direction of arrow f by springs 64c and 65c, so that the electromagnetic valves 64 and 65 become inactive, and the rotation of the backrest 4 is stopped.

Next, in order to raise the crotch supports 6a and 6b in the direction of arrow i in FIGS. 1 and 5, switch C (not shown) is turned on, and the solenoids 60b and 61b of the solenoid valves 60 and 61 are energized. spool 60a,
61a is moved in the direction of arrow e in FIG. As a result, the pressure oil supplied from the hydraulic pump 80 is applied to the internal space 35b of the hydraulic cylinder 35 through the solenoid valve 60, the variable throttle valve 72, and the check valve 92, and the piston 38 and piston rod 36 of the hydraulic cylinder 35 are is moved in the direction of arrow e in FIGS. 3, 5, and 12, and the discharged oil from the internal space 35a of the hydraulic cylinder 35 is returned to the tank 82 through the electromagnetic valve 61 and the variable throttle 73.

On the other hand, by moving the piston rod 36 in the direction of arrow e, the driving member 40 moves toward the piston rod 36.
It is pulled by and moves in the direction of arrow e in FIGS. 3 and 5. As a result, the rotating arm members 24, 25
is rotated in the direction of arrow i in FIG.
a, 6b are raised in the direction of arrow i. When the switch C is turned off when the crotch supports 6a and 6b have been raised to the desired position, the solenoids 6 of the solenoid valves 60 and 61
The excitation of 0b and 61b is released and the spool 60a,
61b is moved in the direction of arrow f in FIG. 12 by springs 60c and 61c, and solenoid valves 60 and 61 become inactive. This stops the crotch supports 6a, 6b from rising.

Next, when a switch D (not shown) is turned on to lower the crotch supports 6a and 6b in the direction of arrow j in FIGS. 1 and 5, the solenoids 59b and 62b of the solenoid valves 59 and 62 are energized. spool 59a,
62a is moved in the direction of arrow e in FIG. As a result, the pressure oil supplied from the hydraulic pump 80 is applied to the internal space 35a of the hydraulic cylinder 35 through the solenoid valve 62, the variable throttle valve 74, and the check valve 95, and the piston 38 and piston rod 36 of the hydraulic cylinder 35 are is moved in the direction of arrow f in FIGS. 3, 5, and 12, and the hydraulic cylinder 35
The discharged oil from the internal space 35b is returned to the tank 82 through the solenoid valve 59 and the variable throttle valve 71.

On the other hand, as the piston rod 36 moves in the direction of arrow f, the driving member 40 moves toward the piston rod 36.
is pushed and moves in the direction of arrow f in Fig. 3. As a result, the rotating arm members 24, 25 are rotated about the rotating fulcrum shafts 19, 20 in the direction of the arrow j in FIG.
The crotch supports 6a and 6b, which are attached to the crotch support 5a, are lowered in the direction of the arrow j. When the switch D is turned off when the crotch supports 6a and 6b have been lowered to the desired positions, the solenoids 59b and 62 of the electromagnetic valves 59 and 62
b is de-energized, the spools 59a and 62b are moved by the springs 59c and 62c in the direction of the arrow f in FIG. 12, and the solenoid valves 59 and 62 become inactive. This stops the lowering of the crotch supports 6a, 6b.

Next, the operation of tilting the patient backward without changing the angle formed by the backrest portion 4 and the crotch supports 6a, 6b will be described.

First, as shown by the solid lines in FIG. 6, by operating the above-mentioned switches A to D,
The inclination angles of a and 6b are adjusted, and the angle formed by the backrest portion 4 and the crotch supports 6a and 6b is set to, for example, θ.

Next, when reverse switch E (not shown) is turned on,
Solenoids 57b, 6 of solenoid valves 57, 60, 63
0b, 63b are excited and each spool 57a, 6
0a, 63a are moved in the direction of arrow e in FIG. 12, and each electromagnetic valve 57, 60, 63 is activated. As a result, the pressure oil supplied from the hydraulic pump 80 passes through the electromagnetic valve 60, the variable throttle valve 72, and the check valve 92 to the internal space 35b of the hydraulic cylinder 35.
added to the piston 38 and piston rod 3
6 is moved in the direction of arrow e. By moving the pin rod 36 in the direction of arrow e, the crotch supports 6a and 6b are raised in the direction of arrow i in FIG. 6 as described above.

On the other hand, oil discharged from the internal space 35a of the hydraulic cylinder 35 flows into the internal space 30a of the hydraulic cylinder 30 through the electromagnetic valve 57 and the check valve 91. As a result, the piston 34 and piston rod 31 of the hydraulic cylinder 30 are moved in the direction of the arrow e in FIG. 12, and the backrest 4 is rotated in the direction of the arrow c in FIG. 6 as described above.
Discharged oil from the internal space 30b of the hydraulic cylinder 30 is returned to the tank 82 through the electromagnetic valve 63 and the variable throttle valve 75.

When the backrest portion 4 is rotated in the direction of the arrow c and the crotch supports 6a and 6b are rotated in the direction of the arrow i in this manner, the hydraulic cylinder 30 and the hydraulic cylinder 3
5 are each composed of the same double-acting cylinder, and the oil discharged from the internal space 35a of the hydraulic cylinder 35 by the movement of the piston 38 in the direction of the arrow e is transferred to the internal space 3 through the solenoid valve 57 and the check valve 91.
5a into the internal space 30a of the hydraulic cylinder 30, which moves the piston 34 and the piston rod 31. Therefore, the piston 38 and the piston rod 36 move in the direction of the arrow e. The amount of movement of the piston 34 and the piston rod 31 in the direction of arrow e are completely equal.

Rotation arm members 28 and 29 are rotated about the rotation fulcrum shaft 16 via the drive member 40 by the movement of the piston rod 36 in the direction of arrow e.
The above-mentioned lengths l ₁ and l 2 of the arm parts 24b and 25b which are rotated around the rotation fulcrum shafts 19 and 20 are equal, and the lengths l ₁ and _{l 2 and} the piston rod 3 are equal.
By moving in the direction of arrow e of 1, the rotation fulcrum shaft 15, 1
Since the above-mentioned length l ₃ of the rotary arm portion 23 rotated about 6 is also equal, the rotary arm members 28 and 29 and the arm portion based on the equal distance movement of the piston rod 36 and the piston rod 31 are the same. The rotation angles of 24b, 25b and the rotation arm portion 23 are approximately the same.

Therefore, the rotation angle α shown in FIG. 6 of the backrest portion 4 that rotates due to the rotation of the rotation arm portion 23, and the arm portions 24b and 25 of the rotation arm members 24 and 25,
The rotation angle β of the crotch supports 6a and 6b rotated by the rotation of b is almost the same, and the angle between the backrest 4 and the crotch supports 6a and 6b is the same as the initially set angle between them. While maintaining the angle θ, the vehicle is rotated backward as shown by the dashed line in FIG.

Next, the operation of tilting the patient forward without changing the angle formed by the backrest portion 4 and the crotch supports 6a, 6b will be described.

Backrest portion 4 in the state shown by the dashed-dotted line in FIG.
When the forward rotation switch F (not shown) is turned on to bring the crotch supports 6a, 6b into the state shown by the solid line, the solenoids 58b, 59 of the solenoid valves 58, 59, 64
b, 64b are excited and each spool 58a, 59
a, 64a is moved in the direction of arrow e in FIG.
Each electromagnetic valve 58, 59, 64 is activated. As a result, the pressure oil supplied from the hydraulic pump 80 is applied to the internal space 30b of the hydraulic cylinder 30 through the solenoid valve 64, the variable throttle valve 76, and the check valve 98, and the piston 34 and the piston rod 31 are moved in the direction of the arrow f. A move will be made to. As the piston rod 31 moves in the direction of the arrow f, the backrest 4 is rotated in the direction of the arrow d in FIG. 6 as described above.

On the other hand, the oil discharged from the internal space 30a of the hydraulic cylinder 30 flows through the electromagnetic valve 58 and the check valve 90 into the internal space 35a of the hydraulic cylinder 35, which has the same volume as the internal space 30a. As a result, the piston 38 and piston rod 36 of the hydraulic cylinder 35 are moved in the direction of the arrow f in FIG. 12, and the crotch supports 6a and 6b are rotated in the direction of the arrow j in FIG. 6 as described above. At the same time, the discharged oil from the internal space 35b of the hydraulic cylinder 35 is returned to the tank 82 through the electromagnetic valve 59 and the variable throttle valve 71.

When the backrest portion 4 is rotated in the direction of the arrow d and the crotch supports 6a and 6b are rotated in the direction of the arrow j in this manner, the rotation angle α of the backrest portion 4 and the crotch support portion are 6
The rotation angles β of a and 6b are the same for the same reason as in the case of backward rotation described above. Therefore, the backrest portion 4
The crotch supports 6a and 6b are rotated forward while maintaining the angle between them at the start of forward rotation.

Next, the drive mechanism of the auxiliary stand 12 will be explained.

Frame 13 of the delivery table 1 shown in FIGS. 1 and 2
A base 104 is provided inside. Above this base 104, as shown in FIGS. 7 and 10, a first slide member 105 is positioned with arrows e and f.
It is arranged so that it can be moved in the direction.

A frame portion 106 is integrally provided at the tip of the first slide member 105, and this frame portion 1
A second slide member 110 is disposed inside 06 so as to be movable in the directions of arrows e and f. A plurality of rail members 107 are attached to the inner wall portion 106a of the frame portion 106.

The second slide member 110 includes the parts shown in FIGS.
As shown in the figure, the tip of the piston rod 121 of the hydraulic cylinder 120 for driving the auxiliary stand 12 is screwed, and the second slide member 11
One end portions of four links 112 to 115 are pivotally attached to both sides of the roller 0 along with rollers 116 to 119. Note that the other end portion 112 of the links 112 to 115
a to 115a are pivoted to a mounting portion 44 that is integrally provided at the bottom of the auxiliary stand 12.

Links 112-115 include links 125-1
28 are pivotally mounted in a state where they intersect with each other. One end portions 125a to 128a of links 125 to 128
is the frame portion 106 of the first slide member 105
The other ends 125b to 128b of the links 125 to 128 have rollers 129 that roll along the lower surface of the auxiliary table 12.
~132 is supported pivotally.

Next, the operation of the drive mechanism for the auxiliary stand 12 described above will be explained.

First, in order to pull out the auxiliary stand 12 in the direction of arrow e in FIG.
Solenoid 54 of electromagnetic valve 54, 55 in Fig. 12
b, 55b are excited and the spools 54a, 55a
moves in the direction of arrow e, and the solenoid valves 54 and 55 are activated.

As a result, the pressure oil supplied from the hydraulic pump 80 is transferred to the solenoid valve 54, the variable throttle valve 68, and the check valve 8.
6 through the internal space 120 of the hydraulic cylinder 120
a, the piston 1 of the hydraulic cylinder 120
22 and piston rod 121 are moved in the direction of arrow e, and the oil in internal space 120b is discharged into tank 82 through electromagnetic valve 55 and variable throttle valve 69.

By the movement of the piston 122 and the piston rod 121 in the direction of arrow e, the first slide member 105 and the second slide member 110 move into the first position.
7 and 8, and the auxiliary table 12 is pushed out horizontally from the lower part of the seat portion 5 in the direction of the arrow e. and the first slide member 1
7, the contact portion 108 provided on the base 104 contacts the stopper portion 109 provided on the base 104 as shown in FIG.
5 is restricted from moving in the direction of arrow e, but when the piston rod 121 is further pushed out in the direction of arrow e, the second slide member 110 moves inside the frame portion 106 of the first slide member 105. It moves in the direction of arrow e from the position shown by the dashed line in FIG. 8 to the position shown by the solid line. As a result, the rollers 116 to 119 of the links 112 to 115 roll on the rail member 107, and the links 12 to 115 roll on the rail member 107.
5 to 128 rollers 129 to 132 are the auxiliary stand 12
The links 112 to 115 and links 125 to 128 rise from the state shown by the dashed lines in FIG. 8 as shown by the solid lines.

Links 112-115 and links 125-12
8 stands up, the auxiliary stand 12 becomes the second
It is vertically raised in the direction of arrow a in FIGS. 7 and 8. When the auxiliary stand 12 is raised to a predetermined height and the switch G is turned off, the solenoids 54b and 55b of the solenoid valves 54 and 55 are de-energized and the spools 54a and 55a move in the direction of the arrow f in FIG. The solenoid valves 54 and 55 become inactive. As a result, the raising of the auxiliary stand 12 is stopped.

Next, when a switch H (not shown) is turned on to store the auxiliary stand 12 pulled out as described above, the solenoids 53b and 56b of the electromagnetic valves 53 and 56 in FIG. 12 are energized, and the spool 53a, 5
6a moves in the direction of arrow e, and the solenoid valves 53 and 56 enter the operating state. As a result, the pressure oil supplied from the hydraulic pump 80 is transferred to the solenoid valve 56 and the variable throttle valve 70.
and is added to the internal space 120b of the hydraulic cylinder 120 through the check valve 89, and the hydraulic cylinder 12
0 piston 122 and piston rod 121 are moved in the direction of arrow f, and the internal space 120
The oil in a is returned to the tank 82 through the solenoid valve 53 and the variable throttle valve 67.

As the piston rod 121 moves in the direction of arrow f, the second slide member 110 moves the inside of the frame portion 106 of the first slide member 105 into the eighth position.
It is moved in the direction of arrow f from the position shown by the solid line in the figure to the position shown by the chain line, and the links 112 to 115 and links 125 to 128 are folded from the state shown by the solid line in FIG. 8 to the position shown by the chain line. As a result, the auxiliary table 12 is vertically lowered in the direction of the arrow b in FIGS. 7 and 8. Then, when the piston rod 121 is further pulled in the direction of arrow f, the first
The slide member 105 is the second slide member 11
0 in the direction of the arrow f, and the auxiliary stand 12 is horizontally pulled into the lower part of the seat part 5.

Next, an elevating mechanism for elevating and lowering the entire human body support section 3 will be explained.

A hydraulic cylinder 147 for raising and lowering the entire human body supporting section 3 in the directions of arrows a and b in FIG. 1 is disposed inside the cover member 150 at the bottom of the human body supporting section 3.

As shown in FIG. 12, this hydraulic cylinder 147 includes a piston 148 that moves in the directions of arrows a and b, and a piston rod 149 that is connected to the human body support section 3.
and is connected to solenoid valves 45 and 46.

Now, when a switch (not shown) is turned on in order to raise the entire human body support part 3 in the direction of arrow a in FIG. direction, and the solenoid valve 45 enters the operating state. As a result, the pressure oil supplied from the hydraulic pump 80 is applied to the internal space 147a of the hydraulic cylinder 147 through the solenoid valve 45, variable throttle valve 47, and check valve 48, and the piston 148 and piston rod 147 move in the direction of arrow a. 1, and the human body support section 3 is raised in the direction of arrow a in FIG. When the switch is turned off when the entire human body support part 3 has risen to a predetermined height, the solenoid 45b of the solenoid valve 45 is de-energized, the solenoid valve 45 becomes inactive, and the human body support part 3 stops rising. be done.

Next, when a switch J (not shown) is turned on to lower the entire human body support part 3 in the direction of arrow b in FIG. direction, and the solenoid valve 46 is activated. As a result, the oil in the internal space 147a of the hydraulic cylinder 147 is returned to the tank 50 through the electromagnetic valve 46 and the variable throttle valve 49, and the human body support part 3 is moved by its own weight to the piston rod 149 of the hydraulic cylinder 147.
While pressing down in the direction of arrow b in FIG. 12, it descends in the direction of arrow b in FIG. 1. Then, when the human body support part 3 is lowered to a predetermined position, when the switch J is turned off, the solenoid 46b of the solenoid valve 46 is de-energized, the solenoid valve 46 becomes inactive, and the lowering of the human body support part 3 is stopped. be done.

In FIG. 12, 102 is a shock absorber, and 39 and 42 are relief valves.

Next, the guide mechanism of the first slide member 105 will be explained.

As shown in FIGS. 7 and 10, a pair of left and right guide rails 133 are arranged on the sides of the first slide member 105. As shown in FIGS. The pair of guide rails 133 are supported by a support member 134 screwed onto the base 104, and the frame 1
Horizontal within 3 (directions of arrows e and f in Figures 1 and 2)
It is spread over.

A pair of guide members 135 are attached to the sides of the first slide member 105 to be guided by the guide rails 133 of the first slide member 105.

As shown in FIG. 9, the guide member 135 includes a shaft member 137 that is screwed to a pair of upper and lower mounting portions 136a and 136b provided on the side of the first slide member 105, and a shaft of this shaft member 137. Part 13
It has a rotating member 140 that rotates around 8.

The shaft member 137 has a screw hole 1 of the mounting portion 136b.
45 is provided with an insertion hole 139 through which a screw 146 is inserted. And this insertion hole 1
39 is provided at a position eccentric from the central axis of the shaft portion 138, as shown in FIGS. 9, 11A, and 11B.

The rotating member 140 is provided with a center hole 141, and by inserting the shaft portion 138 of the shaft member 137 into the center hole 141 via the bearing 142, the rotating member 140 rotates around the shaft portion 138. It is configured to be rotatable.

A pair of upper and lower flange portions 143 are provided at the upper and lower ends of the rotating member 140, and a guide rail 133 is provided between the pair of upper and lower flange portions 143.
is located. And between this pair of flange portions 143 and mounting portions 136a, 136b,
A pair of upper and lower thrust bearings 144 are interposed, respectively.

The guide mechanism of the first slide member 105 is configured as described above, and the guide mechanism of the first slide member 105 is
When moving, the outer peripheral portions 140a of the pair of left and right rotating members 140 are moved by the pair of left and right guide rails 13.
3, the rotating member 140 rotates, thereby smoothly guiding the first slide member 105 along the guide rail 133.

Then, as shown in FIG. 11B, the rotating member 14
0 outer peripheral range portion 140a and guide rail 133
If there is a gap between the screws 146
When the shaft member 137 is rotated about the screw 146 as shown in FIG. 11A, the screw 14
The insertion hole 139 through which 6 is inserted is the shaft member 137
Since the shaft part 138 is provided in an eccentric state, the shaft part 138 gradually moves toward the guide rail 13 from the position shown in FIG. 11B as the shaft member 137 rotates.
Approaching 3. As a result, the position of the rotating member 140, in which the shaft portion 138 is inserted into the center hole 141 thereof, is also moved from the position shown in FIG. 11B to the position shown in FIG. 11A. Then, when the outer peripheral portion 140a of the rotating member 140 is in close contact with the guide rail 133, the screw 146 is tightened to position the rotating member 140. When the first slide member 105 moves, the rotating member 140 The outer peripheral portion 140a is always the guide rail 133
The first
This allows the slide member 105 to move smoothly without rattling.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various effective changes can be made based on the technical idea of the present invention.

Furthermore, the present invention is not limited to delivery beds, but
It can be widely applied to medical tables such as examination tables and operating tables.

〔Effect of the invention〕

According to the present invention, the first driving means allows the backrest portion to be rotated relative to the seat portion without rotating the crotch support portion relative to the seat portion, and the second driving means allows the backrest portion to be rotated relative to the seat portion. Since the crotch support can be rotated relative to the seat without rotating the backrest relative to the seat, the patient's posture can be optimized depending on the type of delivery or examination and the patient's body shape. It can be made into something.

Further, the interlocking means allows the first driving means and the second driving means to be connected to each other.
The backrest and crotch support can be rotated relative to the seat while keeping the angle formed by them almost constant by interlocking with the drive means of the After setting the posture, even if the patient's entire body is rotated forward or backward by rotating the backrest portion and the crotch support portion, the patient's posture is maintained at the initially set posture. Therefore, it is convenient because there is no need to reset the patient's posture to the initially set posture every time the patient's body is rotated forward or backward for internal examination.

In addition, the posture of the patient's lower body on the medical table can be changed by rotating the crotch support upward or downward relative to the seat. The patient is generally retained in the initially seated position on the seat, so that the patient does not have to re-sit on the seat each time the lower body posture is adjusted.

Further, a seat part is interposed between the backrest part and the crotch support part, and the backrest part and the crotch support part are connected to the seat part at positions on both sides of the seat part and separated by the width of the seat part. Since both rotate, even if one or both of these parts rotates relative to the seat part in a direction that reduces the angle formed by the backrest part and the crotch support part, the patient's abdomen will not be compressed more than necessary. It is highly safe, especially for pregnant women.

Further, the backrest portion and the crotch receiving portion are separately rotated with respect to the seat portion by the first driving means for rotating the backrest portion and the second driving means for rotating the crotch receiving portion. Since the angle formed by the backrest part and the crotch support part are kept almost constant, fix the backrest part and the crotch support part using a fixing member or the like so that the angle formed by the two does not change.
Compared to the method of rotating both together in this state, it saves the effort of fixing both, and prevents accidents to the patient due to unexpected release of fixation of both. can.

[Brief explanation of drawings]

The drawings show an embodiment in which the present invention is applied to a delivery table, in which Figures 1 and 2 are perspective views showing the entire delivery table, and Figure 3 is a drive mechanism for the backrest and crotch support. Fig. 4 is a side view showing the operation of the backrest part, Fig. 5 is a side view showing the movement of the crotch support part, and Fig. 6 is a case where the backrest part and the crotch support part are driven at the same time. 7 is a perspective view showing the drive mechanism of the auxiliary table, FIG. 8 is a side view showing the operation of the auxiliary table, and FIG. 9 is an exploded view showing the guide mechanism of the first guide member. FIG. 10 is a side view showing the same guide mechanism as above, FIGS. 11A and 11B are sectional views showing adjustment operations of the guide mechanism, and FIG. 12 is a hydraulic circuit diagram. In addition, in the symbols used in the drawings, 1... Delivery table, 3... Human body support part, 4... Backrest part, 5...
Seat part, 6, 6a, 6b...crotch support part, 12...
Auxiliary stand, 23...Rotating arm part, 24b, 25d
... Arm part, 28, 29 ... Rotating arm member,
30, 35... Hydraulic cylinder, 31, 36... Piston rod, 34, 38, 122, 148...
Piston, 35, 147...Hydraulic cylinder, 11
2,113,114,115,125,126,
127,128...link, 120,149...
Piston rod, 122... Piston, 133...
... Guide rail, 135 ... Guide member, 137
. . . Shaft member, 140 . . . Rotating member.

Claims (1)

[Scope of Claims] 1. A backrest portion is disposed on one end side of the seat portion so as to be rotatable with respect to the seat portion, and a crotch support portion is provided on the other end side of the seat portion so as to be rotatable with respect to the seat portion. The medical table is rotatably arranged, and the first drive is capable of rotating the backrest portion relative to the seat portion without rotating the crotch support portion relative to the seat portion. means; a second drive means capable of rotating the crotch support portion relative to the seat portion without rotating the backrest portion relative to the seat portion; and the first drive means. Interlocking means for interlocking the second driving means are provided, and when the interlocking means brings the first driving means and the second driving means into an interlocking state,
The backrest portion and the crotch support portion, with the seat portion interposed therebetween, maintain the angle formed by the backrest portion and the crotch support portion substantially constant. A medical table characterized in that it is configured to rotate relative to each other.