JP3322784B2 - Crotch support opening and closing device for examination tables for obstetrics and gynecology - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an obstetrics and gynecology department in which a crotch rest on which a patient's thigh is placed is opened in a state suitable for the examination when performing an examination in an obstetrics and gynecology department or an anus department. And the like.

[0002]

2. Description of the Related Art A conventional examination table for obstetrics, gynecology and the like is provided with a patient who sits on a chair-like seat having a backrest standing upright, and puts the patient on a crotch support with her thighs closed. The patient was allowed to take a possible posture, and then the backrest was turned down to cause the patient to take a supine position, and then the crotch rest was opened, and the thigh was opened to take the examination position.

An example is disclosed in Japanese Patent Publication No. 17662/1992. That is, the backrest stands up, and the patient is seated on the crotch support and the lower part of the backrest from the thigh to the buttocks on the examination table in which the crotch support is closed, and the patient is placed in a supine position when the backrest falls down. At the same time, the crotch rest is opened outward in conjunction with the reclining of the backrest, causing the patient to take the examination posture of supine and open legs, and automatically shift from the sitting state to the examination posture.

[0004]

However, in the examination table for taking the examination posture of supine and open legs, the crotch support is pivotally attached to one point of the backrest and opens outward with the pivot point as a center. Therefore, there is a problem that the trajectory of the point supported by the thigh crotch support does not match the trajectory drawn by the crotch support.

That is, since the patient sitting on the examination table has different heights and different lengths of legs, and also has different flexibility of the hip joints, the locus of the point supported by the patient's thigh support as described above. If the trajectory drawn by the crotch support does not match,
There has been a problem that excessive force acts on the hip joint and causes pain to the patient.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and has as its object to provide a trajectory of a point supported by a thigh crotch support and a crotch support upon transition from a closed leg posture to an open leg posture. Therefore, it is an object of the present invention to provide a crotch holder opening / closing device for an examination table for an obstetrics and gynecology department which prevents an excessive force from being applied to the hip joint by matching the trajectory described.

The crotch receiving opening / closing device for an examination table for obstetrics and gynecology according to the present invention achieves the above-mentioned object.
Means is attached to a base, a backrest that can be raised and lowered with respect to the base, and a mounting plate disposed at a lower end of the backrest,
A guide rail formed into a curve that fits the thigh leg when the crotch is opened, a slide block to which a crotch support for sliding the guide rail is attached ;
A passive member attached to the ride block and the backrest
Push arm and negative push arm that are displaced in
When the backrest is displaced in the upright direction.
The negative pushing arm is connected to the slide block via the passive member.
Move the lock to close the crotch support, and
When the backrest is displaced in the falling direction, the forward pushing arm
What is the moving direction of the slide block via a member?
Move in the opposite direction and with the gravity added to the crotch support
Therefore, the crotch support is opened.

The second means includes a base, a backrest that can be raised and lowered with respect to the base, and a lower end of the backrest .
A guide rail that is attached to the mounting plate and that is formed into a curve that fits the thigh leg of the hot water bath that opens the crotch, a slide block that slides the guide rail, and a crotch attached to the slide block A receiving and passive member, two connecting links each having one end pivotally supported by the base,
One end of one of the connecting links is pivotally supported, the middle part is pivotally supported by the backrest, and the other end is a positive push arm located opposite the passive member; One end is pivotally supported and an intermediate portion is pivotally supported by the backrest, and the other end is constituted by a negative pushing arm located opposite to the passive member, and when the backrest is in a standing state. The negative pushing arm abuts on the passive member due to the displacement of the other connecting link to prevent the crotch support from moving in the leg opening direction.
The displacement of the two connecting links abuts the passive member to prevent the movement of the crotch support in the direction of closing the legs, and when the backrest shifts from the lying down state to the upright state, the forward pushing arm allows the passive member to move the passive member. The crotch support is displaced in the leg closing direction by being pushed in the closing direction, and the crotch support is displaced in the leg opening direction by the patient's own weight and the crotch receiving own weight when the backrest is in the upright state from the upright state. The passive member is located at an intermediate position between the positive pushing arm and the negative pushing arm, and keeps the crotch support in a free state.

Further, the third means includes a base, a backrest which can be raised and lowered with respect to the base, and a lower end of the backrest.
A guide rail that is attached to a mounting plate that has been formed, and that is formed into a curve that fits the thigh leg when the crotch is opened,
A slide block to which a crotch support for sliding the guide rail is attached, a rack attached to the slide block, and a gear meshed with the rack and rotated by a drive source such as a motor.

The fourth means includes a base, a backrest that can be raised and lowered with respect to the base, and a lower end of the backrest .
A guide rail which is attached to the mounting plate and which is formed into a curve adapted to a thigh leg when the crotch is opened, a slide block which slides the guide rail, and a crotch support which is attached to the slide block And racks,
A gear meshed with the rack; and a second gear meshed with the gear.
A gear, a rotating arm that rotates integrally with the second gear,
A slide pin that moves in the guide groove of the support plate on the back surface of the backrest by expansion and contraction of an extension means such as a hydraulic cylinder, and a seat that moves between the lower front portion of the backrest and the back surface of the backrest by the movement of the slide pin. Surface, and a spring stretched between the tip of the rotating arm and the support plate, and the tip of the rotating arm is The guide pin is in contact with the guide pin, and as the seat moves to the back side of the backrest, the guide pin is in a free state, the locked state by the second gear and the gear is released, and the slide block is free to move. The displacement of the spring in the leg opening direction is free against the spring force of the spring due to the patient's own weight and crotch receiving own weight.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a first embodiment of a crotch support opening and closing device for an examination table for obstetrics and gynecology according to the present invention will be described with reference to FIGS.
FIG. 8 is described below. In this embodiment, a backrest 2 is pivotally connected to a base 1 installed on the floor surface by a shaft 3 so as to be able to be raised and lowered by a conventionally known raising and lowering mechanism.

When the backrest 2 is in the upright state, a seat surface 4 is attached to the front side of the backrest 2 so as to be pivotable and slidable. The seat 4 is retracted to the lower side of the backrest 2 as shown by a two-dot chain line in FIG.

A mounting plate 2a arranged at the lower end of the backrest 2.
4, a guide rail 5 having a hexagonal cross section as shown in FIG. 4, approximating an arc and having a slight twist is formed on each of the right and left curved rails of FIGS. Each of the guide rails 5 is fitted with a slide block 7 to which rollers 6 that can roll along two sets of opposing surfaces are fitted. Therefore, the slide block 7 is connected to the guide rail 5.
It can slide smoothly without causing backlash.

A crotch support arm 9 to which a crotch support 8 is attached is fixed to each slide block 7. When the slide block 7 slides on the guide rail 5, the left and right crotch supports are moved as the crotch support arm 9 moves. Reference numeral 8 indicates a close proximity, a left or right separation, and a crotch receiving surface inclined inward.

On each slide block 7, a passive member 10 having a spherical tip 10 a is attached to the opposite side of the crotch receiving arm 9, and is pivotally supported at a fulcrum 11 on a mounting plate 2 a of the backrest 2. Positive pushing arm 12 and negative pushing arm 1
3 are opposed to the spherical shape 10a with a gap interposed therebetween.

The forward pushing arm 12 and the negative pushing arm 13
Are pivotally supported by a connecting link 14 and a connecting link 15 pivotally supported by the base 1, respectively. Pushes and pulls the other end and turns them, so that their tips push the spheres 10a in opposite directions.

When the forward end of the forward push arm 12 pushes the spherical shape 10a of the passive member 10 to slide the slide block 7, the left and right crotch supports 8 move away from each other in the direction to open the thighs, and the When the tip of the pushing member 13 pushes the spherical shape 10a of the passive member 10 to slide the slide block 7, the left and right crotch supports 8 move in the direction of closing the legs close to each other.

When the crotch support 8 moves in the direction in which the crotch support 8 separates as described above, the crotch support arm 9 and the crotch support 8 are directed downward according to the inclination of the backrest 2 because the backrest 2 is in a half-down state. As it rotates and tilts outward, the crotch rest 8
The gravitational force applied to the crotch support arm 9 and the crotch support arm 9 further moves the crotch support 8 left and right, and operates in a direction to open the leg.

Next, the operation when the backrest 2 falls down from the standing state will be described. In this state, the patient places the buttocks on the seating surface 4 and the back side of the thigh on the crotch support 8, and places the back on the backrest 2 to take a sitting position. The patient is turned backward and the patient is moved to the supine position.

Since the connecting links 14 and 15 rotate the positive pushing arm 12 and the negative pushing arm 13 in accordance with the downward movement of the backrest 2, the forward pushing arm 12 approaches from above the spherical shape 10a and moves the same. Pushing, the slide block 7 is slid on the guide rail 5, and the crotch receiving arm 9 separates the left and right crotch receivers 8 and moves them in the direction to open the legs.

Then, as described above, the gravitational force acting on the crotch support 8 and the like acts in a direction that further promotes the leg-spreading state, and the patient's thighs are mainly opened by the gravitational action. Leg is opened.

However, when the leg 10a acts on the crotch support 8 against gravity due to a difference in leg length or a difference in flexibility of the hip joint due to a difference in height of the patient, the spherical shape 10a becomes the negative pushing arm 1.
It stops in the state located between 3 and the forward push arm 12, and therefore, it is possible to prevent the leg opening operation from being somewhat weakened and to apply an excessive force to the hip joint.

The examination is performed in such a posture. In this examination posture, the seating surface 4 is stored under the backrest 2. Then, when the examination is completed, the seating surface 4 is shifted to the front lower side of the backrest 2 so that the buttocks can be supported when the patient is in the upright state, and the backrest 2 is guided to the upright state.
By the operation reverse to the above, the left and right crotch supports 8 can be brought into the approaching state and the closed state can be led.

Next, a second embodiment will be described below with reference to FIG. Also in this embodiment, the backrest 2 has the above-described guide rail 5, a slide block 7 that slides on the slide rail 5, a crotch rest 8 on which the patient's thigh is placed, and the slide block 7 and the crotch rest 8 are interlocked. A crotch receiving arm 9 is provided.

The slide block 7 has a motor 20
When the motor 20 rotates, the rack 22 slides the slide block 7 on the guide rail 5, and the sliding causes the crotch support arm 9 to open the crotch support 8. The legs and the legs are closed in the same manner as in the previous embodiment.

Therefore, in this embodiment, the crotch rest 8 can be opened and closed by rotating the motor 20 irrespective of the state of the backrest 2 standing or lying down. The method of use can be expanded.

Further, a third embodiment will be described with reference to FIGS. Also in this embodiment, the guide rail 5, the slide block 7, the crotch support 8, the crotch receiving arm 9, the gear 21 and the rack 22 meshing therewith are provided as in the previous embodiment, and the gear 21 rotates. The opening and closing of the crotch support 8 are performed in the same manner as in the second embodiment.

In this embodiment, an extension means 23 such as a hydraulic cylinder is provided inside the backrest 2, and the seating surface 4 is stored under the backrest 2 or shifted to the front side by the extension means 23. In addition, the crotch support 8 is opened and closed with the shift of the seat surface 4.

Hereinafter, details of the structure will be described. Seat 4
Slide pins 4a and 4b are provided on the left and right of the support plate 24, and the two guide grooves 24a and 24b of the support plate 24 fixed to the lower side of the back surface of the backrest 2.
b. The slide pin 4a projects from the front surface of the guide groove 24a.

The gear 21 is pivotally supported on the front surface of the support plate 24, and a second gear 25, which is also pivotally supported by the support plate 24, meshes with the gear 21. The second gear 25 is integrally formed with a rotating arm 25a that comes into contact with the guide pin 4a. Further, a spring 26 is stretched between the rotating arm 25a and the support plate 24. The spring 26 is stretched so that the pivot arm 25a contacts the guide pin 4a when the crotch support 8 is closed.

Next, the operation will be described.
Is in an upright state (FIGS. 10 and 12), since the seat surface 4 is in a state of being protruded to the front of the backrest 2, the slide pin 4
a and 4b are located at the left end in the figure of the guide grooves 24a and 24b. Therefore, the tip of the rotating arm 25a is in a state of contact with the slide pin 4a by the spring force of the spring 26.

In this state, the backrest 2 is turned over (FIG. 1).
1) or while lying down
Is contracted, the slide pins 4a and 4b of the seat surface 4 are pulled along the guide grooves 24a and 24b, and are stored on the back side of the backrest 2. When the slide pin 4a moves to the right, the rotating arm 25a that is in contact with the slide pin 4a by the spring force of the spring 26 is rotated clockwise.

Therefore, since the second gear 25 rotates clockwise, the gear 21 is rotated counterclockwise, and the slide block 7 slides on the guide rail 5 to guide the crotch support 8 to the open leg state. After the rotation arm 25a has passed the rotation position due to the spring force of the spring 26, the second gear is further rotated against the spring force of the spring 26 by the crotch support 8 and the weight of the patient's thigh. By rotating 25, the crotch support 8 is opened by a rotation angle corresponding to the length of the patient's foot and the flexibility of the hip joint.

In this state, the rotating arm 25a comes into contact with a stopper 24c formed on the support plate 24, and stops at a position where the tip of the rotating arm 25a does not come off the guide groove 24a.

Next, a description will be given of the operation of shifting from the open leg posture to the closed leg posture after the examination is completed. When the extension means 23 is extended while the backrest 2 is being erected or while being erected, the seat surface is changed. 4 is moved to the left by the slide pins 4a and 4b, but the slide pin 4a abuts on the rotating arm 25a abutting on the stopper 24c in the middle thereof, and the rotating arm 25a is moved counterclockwise together with the spring force of the spring 26. Rotate in the direction.

As a result, the second gear 25 rotates counterclockwise, so that the gear 21 is rotated clockwise against the crotch support 8 and the weight of the patient's thigh, and the slide block 7 is placed on the guide rail 5. To bring the crotch rest 8 into the closed state. After the rotation arm 25a has passed the rotation position by the spring force of the spring 26, the second gear 25 is further rotated against the crotch support 8 and the weight of the patient's thigh and the spring force of the spring 26. To rotate the crotch support 8 via the gear 21 to the final closed leg state.

[0037]

As described above, according to the present invention, since the leg opening locus of the crotch support is determined by the curved surface shape of the guide rail, the curved surface shape is adjusted so that the distance from the ischial tuberosity to the tip of the crotch support is increased. The leg trajectory of the thigh and the crotch support can be matched, so that the uncomfortable feeling that the back side of the thigh is rubbed by the crotch support does not occur, and the leg with the knee bent is the lower leg Naturally, such as leg-spreading, with the crotch support facing outward, in response to the inward-facing face turning inward.

The leg can be opened with the crotch support raised from the seat surface so that the seat surface does not rub on the back side of the thigh. Since it is performed by natural force such as weight, it is possible to prevent an excessive force from being applied to the hip joint.

Such opening of the legs can be automatically performed in conjunction with the reclining of the backrest, or can be performed independently of the ups and downs of the backrest. Correspondingly, the seat surface provided at the lower portion of the backrest can be stored on the backside of the backrest.

[Brief description of the drawings]

FIG. 1 is a side view showing an operation of a main part according to a first embodiment of the present invention.

FIG. 2 is an enlarged side view of a part for operating the slide block according to the first embodiment.

FIG. 3 is a plan view showing a state in which the backrest of FIG. 1 is standing up;

FIG. 4 is a cross-sectional view of the slide block.

FIG. 5 is a side view showing the entire backrest according to the present embodiment in an upright state.

FIG. 6 is a plan view of the same.

FIG. 7 is a front view of FIG. 5;

FIG. 8 is a plan view showing a state in which the backrest of FIG. 5 is lying down.

FIG. 9 is a side view showing the operation of the main part of the second embodiment of the present invention.

FIG. 10 is a side view of a seat according to a third embodiment of the present invention with a backrest standing upright.

FIG. 11 is a side view showing a state where the backrest is folded down.

FIG. 12 is a side view showing a closed state of the leg opening mechanism of the crotch support of FIG. 10;

13 is a side view showing a leg-spreading state of the leg-opening mechanism of the crotch support of FIG. 11;

[Explanation of symbols]

 2 Backrest 4 Seat surface 5 Guide rail 7 Slide block 8 Crotch support 10 Passive member 12 Positive arm 13 Negative pushing arm 14 Connecting link 15 Connecting link 21 Gear 22 Rack 23 Extension means 25 Second gear 25a Rotating arm

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 7-112012 (JP, A) JP-A 63-286155 (JP, A) JP-A 1-1121050 (JP, A) 156626 (JP, U) JP 4-17662 (JP, B2) JP 6-93904 (JP, B2) JP 61-38586 (JP, Y2) (58) Fields surveyed (Int. Cl. ⁷ , DB name) A61G 13/00

Claims (4)

(57) [Claims] 1. A base, a backrest that can be raised and lowered with respect to the base, and a thigh leg that is attached to a mounting plate disposed at a lower end of the backrest and that opens the crotch. A guide rail formed into a curve that conforms to, and a slide block to which a crotch support that slides the guide rail is attached;
A passive member attached to the slide block;
Positive push arm and negative push that are displaced in conjunction with the ups and downs of the back
Arm, and the backrest is displaced in the upright direction.
And the negative pushing arm is connected to the slide through the passive member.
Moving the delock to close the crotch support,
When the backrest is displaced in the falling direction, the forward pushing arm
Moving the slide block through the passive member in the moving direction
And the gravity acting on the crotch support
A crotch rest opening / closing device for an examination table in obstetrics and gynecology , wherein the crotch rest is opened by means of the above . 2. A base, a backrest that can be raised and lowered with respect to the base, and a thigh that is attached to a mounting plate disposed at a lower end of the backrest and that opens the crotch. A guide rail formed into a curve that fits the leg, a slide block that slides on the guide rail, a crotch support and a passive member attached to the slide block, and two connections whose one end is pivotally supported by the base. A link, a push arm having one end pivotally supported by one of the coupling links, an intermediate portion pivotally supported by the backrest, and the other end positioned opposite the passive member; And a negative pushing arm whose other end is pivotally supported at one end and whose intermediate portion is pivotally supported by the backrest, and whose other end is opposed to the passive member. In the upright state, the negative pushing arm is connected to the other connecting link. The positive push arm abuts the passive member by the displacement of the one connecting link when the backrest is in the down position, and the positively pressed arm abuts on the passive member. The movement of the crotch support in the direction of closing the leg is prevented, and when the backrest shifts from the prone state to the upright state, the passive member is pushed in the direction of closing the leg by the forward pushing arm, whereby the crotch support is displaced in the direction of closing the leg. In addition, when the backrest is in an upright state from a standing state, the crotch support is displaced in the leg-opening direction due to the patient's own weight and the crotch support own weight, and the passive member is positioned at an intermediate position between the positive push arm and the negative push arm. Crotch support opening / closing device for an examination table for obstetrics and gynecology, wherein the crotch support is maintained in a free state. 3. A base, a backrest that can be raised and lowered with respect to the base, and a thigh leg that is attached to a mounting plate disposed at a lower end of the backrest and that opens the crotch. A guide rail formed into a curve that conforms to, and a slide block to which a crotch support that slides the guide rail is attached;
A couch opening / closing device for an obstetrics and gynecology department, comprising: a rack attached to the slide block; and a gear meshed with the rack and rotated by a drive source such as a motor. 4. A base, a backrest that can be raised and lowered with respect to the base, and a thigh leg that is attached to a mounting plate disposed at a lower end of the backrest and that opens the crotch. A guide rail formed into a curve conforming to the above, a slide block for sliding the guide rail, a crotch support and a rack attached to the slide block, a gear meshed with the rack, and meshed with the gear. A second gear, a rotating arm that rotates integrally with the second gear, a slide pin that moves in a guide groove of a support plate on a back surface of the backrest by expansion and contraction of an extension means such as a hydraulic cylinder, and the slide. A seat surface that moves between a lower front portion of the backrest and a back surface of the backrest by shifting pins, and a spring stretched between a tip of the rotating arm and the support plate; Is in front of the backrest The end of the rotating arm is in contact with the guide pin at the time of shifting to the guide portion, and the guide pin becomes free as the seat moves to the rear side of the backrest, and the second gear The lock state by the gear and the gear is released, and the slide block is free to move,
A crotch rest opening / closing device for an examination table for obstetrics and gynecology, wherein displacement of the spring in the direction of opening the legs is free against the spring force of the spring due to the weight of the patient's feet and the weight of the crotch receiver. .