CN114392095A

CN114392095A - Medical painless position restraint device that injects of obstetrical department

Info

Publication number: CN114392095A
Application number: CN202210196453.0A
Authority: CN
Inventors: 江为; 孙金燕
Original assignee: Nanjing First Hospital
Current assignee: Nanjing First Hospital
Priority date: 2022-03-02
Filing date: 2022-03-02
Publication date: 2022-04-26

Abstract

The invention discloses a medical obstetrical painless injection body position restraint device, which comprises a bed body, a hip base plate, a leg base plate, a back backup plate, a back pressing plate, two sliding devices and two rotating devices, wherein the two sliding devices are arranged at the lower end of the bed body side by side; according to the invention, the arranged hip base plate is matched with the leg base plate to bend the lower limbs of the lying-in woman and draw the spine, and the back backup plate is matched with the back pressing plate to bend the upper body of the lying-in woman, so that the body position of the lying-in woman is adjusted, and the operation of medical personnel is facilitated.

Description

Medical painless position restraint device that injects of obstetrical department

Technical Field

The invention relates to a medical instrument, in particular to a medical obstetrical painless injection position restraint device.

Background

At present, a general parturient suffers great pain during delivery, painless delivery is gradually promoted along with the progress of scientific level, most parturients select painless delivery methods for relieving pain through medicines during delivery, intraspinal delivery analgesia is the most exact method for relieving pain in all delivery analgesia methods so far, and the operation is performed by an experienced anesthesiologist. Before anesthesia, medical staff is usually needed to assist, a lying-in woman is put in a special lateral lying position like a curled dried shrimp, operation is troublesome, workload is large, time spent is long, efficiency is low, and pain of the lying-in woman cannot be effectively relieved.

Disclosure of Invention

The invention aims to solve the technical problem that the medical obstetrical painless injection body position restraint device is provided aiming at the defects of the prior art, and the medical obstetrical painless injection body position restraint device is convenient to operate, safe, reliable, simple in structure and low in cost, and can help medical staff to curl the body of a patient, so that an anaesthetist can conveniently perform delivery analgesia injection operation in a vertebral canal.

In order to solve the technical problem, the technical scheme of the invention is realized by the following modes: a medical obstetrical painless injection position restraint device comprises a bed body, a hip base plate, a leg base plate, a back backup plate, a back pressing plate, two sliding devices and two rotating devices, wherein the lower end of the bed body is provided with a plurality of bed legs, and the lower end of each bed leg is provided with a universal belt brake caster;

one side of the bed body along the width direction is provided with a rectangular sliding chute;

the two sliding devices are arranged at the lower end of the bed body side by side, are arranged right below the rectangular sliding groove and are symmetrically arranged along the length direction of the rectangular sliding groove;

one end of the buttock base plate is outwards formed and provided with a first hinge seat, one end of the leg base plate is outwards formed and provided with a first hinge boss matched with the first hinge seat, one end of the first hinge seat, far away from the buttock base plate, is hinged with one end of the first hinge boss, close to the leg base plate, a rotating device is rotatably arranged on the buttock base plate and is rotatably connected with the leg base plate, the buttock base plate and the leg base plate are both slidably arranged at the upper end of the bed body, and the buttock base plate is connected with a sliding device;

the outside shaping of one end of back backup plate is equipped with the second free bearing, the outside shaping of one end of back clamp plate is equipped with the articulated boss of second free bearing matched with, the one end that the back backup plate was kept away from to the second free bearing is articulated with the one end that the articulated boss of second is close to the back clamp plate, another rotating device rotates and sets up on the back backup plate, and this rotating device rotates with the back clamp plate and is connected, the back backup plate all slides with the back clamp plate and sets up in the upper end of the bed body, and the back backup plate links to each other with another slider.

According to the technical scheme, the arranged hip base plate is matched with the leg base plate to drive the legs of the lying-in woman lying on the side and having a straight body originally to rotate towards the abdomen, the back backup plate is matched with the back pressing plate, and when the back pressing plate rotates, the upper body of the lying-in woman lying on the side and having a straight body originally is driven to bend, so that the body of the lying-in woman is finally compressed, the back of the lying-in woman needs to carry out delivery analgesia injection operation in a vertebral canal, and the operation part is exposed between the hip base plate and the back backup plate, so that an anesthesiologist can conveniently carry out disinfection and injection operation; the positions of the hip base plate, the leg base plate, the back backup plate and the back pressing plate can be adjusted according to the body shape of the lying-in woman through the arranged sliding device, so that the lying-in woman can adapt to different body shapes of the lying-in woman; through the rotating device, medical personnel can rotate the leg base plate and the back pressing plate conveniently, the medical personnel can operate conveniently, and the physical strength of the medical personnel is saved.

The technical scheme of the invention is further defined as follows:

a silica gel mattress is arranged at the upper end of the bed body, and rectangular through holes matched with the rectangular sliding grooves are formed in the positions, corresponding to the rectangular sliding grooves, of the silica gel mattress; increasing comfort.

The sliding device comprises two bearing seats, a first screw rod, a crank and a screw rod sliding block, wherein the two bearing seats are respectively sleeved at two ends of the first screw rod, one end of the first screw rod is exposed out of the bearing seats, the crank is arranged at one end of the first screw rod exposed out of the bearing seats, the two bearing seats are both arranged at the lower end of the bed body, the first screw rod is positioned right below the rectangular sliding chute, the length direction of the first screw rod is parallel to the length direction of the rectangular sliding chute, one bearing seat is arranged at one end of the rectangular sliding chute along the length direction, the other bearing seat is arranged at the middle section of the rectangular sliding chute, the screw rod sliding block is sleeved on the first screw rod, the first screw rod is in threaded fit with the screw rod sliding block, a connecting plate is arranged on the screw rod sliding block, and the upper end of the connecting plate is slidably arranged in the rectangular sliding chute; through setting up first lead screw and lead screw slider cooperation, drive buttock backing plate, shank backing plate and slide to the adaptation lying-in woman size.

The hip base plate and the back backup plate are respectively connected with the connecting plates in the two sliding devices; simple structure, easy to assemble.

The rotating device comprises a hinge block, a second screw rod, a rotating connecting seat, a gland and a knob, wherein one end of the second screw rod is outwards formed and provided with a round step, the rotating connecting seat is provided with a round groove matched with the round step on the second screw rod, the round step of the second screw rod is rotatably arranged in the round groove on the second screw rod, the gland is sleeved on the second screw rod, the gland is connected with the rotary connecting seat, the side ends of the buttock backing plate and the back backup plate, which are far away from the bed body, are respectively provided with a hinge seat, the rotary connecting seat is hinged with the hinge seats, the middle section of one end of the first hinge boss, which is far away from the leg backing plate, and the middle section of one end of the second hinge boss, which is far away from the back pressure plate, are respectively provided with a hinge groove, one end of the hinge block is hinged with the hinge groove, the hinge block is provided with a threaded hole, one end of the second lead screw passes through the threaded hole on the hinge block, the second screw rod is in threaded fit with the hinge block, and the knob is arranged at one end, far away from the rotary connecting seat, of the second screw rod; the operation is convenient.

The sides of the hip base plate, the leg base plate, the back backup plate and the back pressing plate, which are close to the bed body, are all provided with air bag soft cushions; increasing comfort.

Two first tightening belts are symmetrically arranged at the upper end and the lower end of the hip base plate, the first tightening belts are made of elastic cloth, and a strip-shaped air bag cushion is sleeved on each first tightening belt in a sliding manner; the free end of one first tightening belt is provided with a first Chinese character 'ri' buckle, and the free end of the other first tightening belt is movably connected with the first Chinese character 'ri' buckle; the two first tightening belts are matched and wound at the root of the leg of the patient, so that the hip base plate is tightly attached and fixed with the hip of the patient.

Two second tightening belts are symmetrically arranged at the upper end and the lower end of one side of the leg base plate, which is far away from the air bag cushion, and are made of elastic cloth, a second Chinese character 'ri' button is arranged at the free end of one second tightening belt, and the free end of the other second tightening belt is movably connected with the second Chinese character 'ri' button; the patient's lower leg and the thigh can be tightened by the two second tightening belts, so that the patient's lower leg is curled.

The invention has the beneficial effects that: according to the technical scheme, the painless injection body position restraining device is provided, the arranged hip base plate is matched with the leg base plate to drive the legs of the lying-in woman lying on the side and having a straight body originally to rotate towards the abdomen, and the back backup plate is matched with the back pressing plate to drive the upper body of the lying-in woman lying on the side and having a straight body originally to bend when the back pressing plate rotates, so that the body of the lying-in woman is finally compressed, the back of the lying-in woman needs to carry out intraspinal delivery analgesia injection operation, the operation part is exposed between the hip base plate and the back backup plate, and an anesthesiologist can conveniently carry out disinfection and injection operation; the positions of the hip base plate, the leg base plate, the back backup plate and the back pressing plate can be adjusted according to the body shape of the lying-in woman through the arranged sliding device, so that the lying-in woman can adapt to different body shapes of the lying-in woman; through the rotating device, medical personnel can rotate the leg base plate and the back pressing plate conveniently, the medical personnel can operate conveniently, and the physical strength of the medical personnel is saved.

Drawings

FIG. 1 is an axial view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;

FIG. 4 is a left side view of the present invention;

FIG. 5 is an axial exploded view of the present invention;

FIG. 6 is an enlarged view of a portion of FIG. 5 at B;

wherein: 1-bed body, 1 a-rectangular chute, 2-hip pad, 3-leg pad, 4-back backup plate, 5-back pressure plate, 6-bed leg, 7-universal caster with brake, 8-first hinge seat, 9-first hinge boss, 10-second hinge seat, 11-second hinge boss, 12-silica gel mattress, 13-bearing seat, 14-first screw rod, 15-crank, 16-screw rod slider, 16 a-connecting plate, 17-hinge block, 18-second screw rod, 18 a-knob, 19-rotating connecting seat, 20-gland, 21-hinge seat, 22-hinge groove, 23-airbag cushion, 24-first tightening band, 25-strip-shaped airbag cushion, 26-first herringbone buckle, 27-second tightening strap, 28-second turnbuckle.

Detailed Description

The technical solutions in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings in the embodiments of the present invention.

It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two elements can be directly connected or indirectly connected through an intermediate medium, and the two elements can be communicated with each other, so that the specific meaning of the terms in the invention can be understood by those skilled in the art.

Example 1

As shown in fig. 1, a medical obstetrical painless injection position restraint device comprises a bed body 1, a hip base plate 2, a leg base plate 3, a back backup plate 4, a back pressure plate 5, two sliding devices and two rotating devices, wherein the lower end of the bed body 1 is provided with a plurality of bed legs 6, and the lower end of each bed leg 6 is provided with a universal belt brake caster 7;

as shown in fig. 3, a rectangular chute 1a is arranged on one side of the bed body 1 in the width direction;

the two sliding devices are arranged at the lower end of the bed body 1 side by side, are both arranged right below the rectangular sliding chute 1a and are symmetrically arranged along the length direction of the rectangular sliding chute 1 a;

as shown in fig. 4, one end of the hip base plate 2 is outwardly formed with a first hinge base 8, one end of the leg base plate 3 is outwardly formed with a first hinge boss 9 matched with the first hinge base 8, one end of the first hinge base 8 far away from the hip base plate 2 is hinged with one end of the first hinge boss 9 close to the leg base plate 3 through a pin shaft, a rotating device is rotatably arranged on the hip base plate 2 and is rotatably connected with the leg base plate 3, the hip base plate 2 and the leg base plate 3 are both slidably arranged at the upper end of the bed body 1, and the hip base plate 2 is connected with a sliding device;

as shown in fig. 4, a second hinged support 10 is formed at one end of the back backup plate 4, a second hinged boss 11 matched with the second hinged support 10 is formed at one end of the back pressing plate 5, one end of the second hinged support 10 far away from the back backup plate 4 is hinged to one end, close to the back pressing plate 5, of the second hinged boss 11 through a pin, another rotating device is rotatably arranged on the back backup plate 4 and is rotatably connected with the back pressing plate 5, the back backup plate 4 and the back pressing plate 5 are both slidably arranged at the upper end of the bed body 1, and the back backup plate 4 is connected with another sliding device.

Lying on the side of the lying-in woman on the silica gel mattress 12, medical personnel adjust two sliding devices to enable the hip cushion plate 2 to move to the hip of the lying-in woman, the back backup plate 4 moves to the back waist of the lying-in woman and corresponds to the lowest rib of a patient, two first tightening belts 24 are wound at the root of the leg of the lying-in woman to enable the hip of the lying-in woman and the hip cushion plate 2 to be tightly attached and fixed, the leg cushion plate 3 is enabled to rotate by adjusting a rotating device on the hip cushion plate 2, the leg cushion plate 3 drives the thigh of the lying-in woman to rotate towards the abdomen to a proper position, the rotating device on the hip cushion plate 2 is stopped to be adjusted, the back pressing plate 5 is enabled to rotate by adjusting the rotating device on the back backup plate 4, so as to press the back of the lying-in woman and be close to the shoulder, so as to enable the upper body of the lying-in woman to be bent, and then, the shanks of the lying-in are tied on the leg cushion plate 3 far away from one side of the air bag cushion 23 by two second tightening belts 27, namely, the thigh and the shank of the lying-in-between-in-between-in-place, at the moment, the whole parturient is curled and in a curled shrimp shape, the back of the parturient can carry out intra-vertebral canal delivery analgesia injection operation, and the operation part is exposed between the hip backing plate and the back backup plate, so that an anesthesiologist can conveniently carry out disinfection and injection operation.

The upper end of the bed body 1 is provided with a silica gel mattress 12, and a rectangular through hole matched with the rectangular sliding groove 1a is arranged on the silica gel mattress 12 corresponding to the rectangular sliding groove 1 a.

As shown in fig. 4, the sliding device includes two bearing blocks 13, a first lead screw 14, a crank 15 and a lead screw slider 16, the two bearing blocks 13 are respectively sleeved at two ends of the first lead screw 14, one end of the first screw rod 14 is exposed out of the bearing seat 13, the crank 15 is arranged at one end of the first screw rod 14 exposed out of the bearing seat 13, the two bearing seats 13 are both arranged at the lower end of the bed body 1, and the first screw rod 14 is positioned right below the rectangular sliding chute 1a, the length direction of the first screw rod 14 is parallel to the length direction of the rectangular sliding chute 1a, one bearing seat 13 is arranged at one end of the rectangular sliding chute 1a along the length direction, the other bearing seat 13 is arranged at the middle section of the rectangular sliding chute 1a, the screw rod slide block 16 is sleeved on the first screw rod 14, the first screw rod 14 is in threaded fit with the screw rod sliding block 16, a connecting plate 16a is arranged on the screw rod sliding block 16, and the upper end of the connecting plate 16a is arranged in the rectangular sliding groove 1a in a sliding mode; the crank 15 is rotated, the crank 15 drives the first screw rod 14 to rotate, and the screw rod slide block 16 is limited by the matching of the connecting plate 16a and the rectangular chute 1a and cannot rotate along the circumferential direction, so that when the first screw rod 14 rotates, the screw rod slide block 16 slides on the first screw rod 14 to drive the hip cushion plate 2 and the back backup plate 4 to slide;

as shown in fig. 4 and 6, the rotating device includes a hinge block 17, a second screw rod 18, a rotating connection seat 19, a pressing cover 20 and a knob 18a, one end of the second screw rod 18 is formed with a circular step, the rotating connection seat 19 is provided with a circular groove matching with the circular step on the second screw rod 18, the circular step of the second screw rod 18 is rotatably disposed in the circular groove on the second screw rod 18, the pressing cover 20 is sleeved on the second screw rod 18, the pressing cover 20 is connected with the rotating connection seat 19, the lateral ends of the hip plate 2 and the back backup plate 4 far away from the bed body 1 are both provided with a hinge seat 21, the rotating connection seat 19 is hinged with the hinge seat 21, the middle section of one end of the first hinge boss 9 far away from the leg plate 3 and the middle section of one end of the second hinge boss 11 far away from the back pressing plate 5 are both provided with a hinge groove 22, one end of the hinge block 17 is hinged with a threaded hole on the hinge block 17, one end of the second screw rod 18 penetrates through a threaded hole in the hinge block 17, the second screw rod 18 is in threaded fit with the hinge block 17, and the knob 18a is arranged at one end, far away from the rotary connecting seat 19, of the second screw rod 18;

the medical staff rotates the knob 18a to make the second screw rod 18 rotate on the rotary connecting seat 19, when the second screw rod 18 rotates, the hinge block 17 slides on the second screw rod 18 through the screw fit between the hinge block 17 and the second screw rod 18, when the hinge block 17 slides on the second screw rod 18, the horizontal position changes, through the rotation fit between the hinge block 17 and the first hinge boss 9 and the second hinge boss 11, when the hinge block 17 slides on the second screw rod 18, the hinge block 17 drives the first hinge boss 9 or the second hinge boss 11 to rotate, so as to make the leg pad 3 and the back press plate 5 rotate, when the first hinge boss 9 and the second hinge boss 11 rotate, the end part movement track is arc-shaped, therefore, when the first hinge boss 9 and the second hinge boss 11 are driven by the hinge block 17 to rotate, the first hinge boss 9 and the second hinge boss 11 simultaneously drive the second screw rod 18 to rotate on the horizontal plane through the hinge block 17, the second screw 18 drives the rotary connecting base 19 to rotate on the hinge base 21.

The buttocks pad 2, the leg pad 3, the back backup plate 4 and the back press plate 5 are all provided with air bag cushions 23 at one side close to the bed body 1; the air bag cushion 23 can be inflated or exhausted, and the softness and hardness of the air bag cushion 23 can be adjusted to enhance the comfort.

Two first tightening belts 24 are symmetrically arranged at the upper end and the lower end of the hip cushion plate 2, the first tightening belts 24 are made of elastic cloth, and a strip-shaped air bag cushion 25 is slidably sleeved on each first tightening belt 24; a first buckle 26 is arranged at the free end of one first tightening belt 24, and the free end of the other first tightening belt 24 is movably connected with the first buckle 26; the two first tightening belts 24 are wound at the thigh roots of the lying-in women, the free ends of the first tightening belts 24 penetrate through the first buckles 26 on the other first tightening belt 24, the two first tightening belts 24 are tightened, and the hip cushion plate 2 is tightly fixed with the hip of the lying-in women.

Two second tightening belts 27 are symmetrically arranged at the upper end and the lower end of one side of the leg cushion plate 3, which is far away from the air bag cushion 23, the second tightening belts 27 are made of elastic cloth, a second Chinese character 'ri' button 28 is arranged at the free end of one second tightening belt 27, and the free end of the other second tightening belt is movably connected with the second Chinese character 'ri' button 28; after the thighs of the lying-in woman are rotated to the proper position towards the abdomen, the shanks of the lying-in woman are rotated towards the thighs and fixed through the two second tightening belts 27.

The using process of the embodiment is as follows: when an anesthesiologist needs to perform intraspinal delivery analgesia for a lying-in woman, the lying-in woman lies on the side of the silica gel mattress 12, a medical worker adjusts the two sliding devices to move the hip pad plate 2 to the hip of the lying-in woman, the back backup plate 4 moves to the back waist of the lying-in woman and corresponds to the lowest rib of a patient, the two first tightening belts 24 are wound at the leg root of the lying-in woman to enable the hip of the lying-in woman and the hip pad plate 2 to be tightly attached and fixed, the leg pad plate 3 rotates by adjusting the rotating device on the hip pad plate 2, the leg pad plate 3 drives the thigh of the lying-in woman to rotate towards the abdomen to a proper position, the rotating device on the hip pad plate 2 is stopped to be adjusted, the back pressing plate 5 rotates by adjusting the rotating device on the back backup plate 4 to press the back of the lying-in the position close to the shoulder, so that the upper body of the lying-in woman is bent, and the shanks of the lying-in the leg pad plate 3 are tied away from one side of the air bag cushion 23 by the two second tightening belts 27, the back of the lying-in woman can carry out intra-vertebral delivery analgesia injection operation on the back of the lying-in woman, and the operation part is exposed between the hip backing plate and the back backup plate, so that an anesthesiologist can carry out disinfection and injection operation conveniently;

the working process of the sliding device is as follows: the medical staff rotates the crank 15, the crank 15 drives the first screw rod 14 to rotate, the screw rod slide block 16 is limited by the matching of the connecting plate 16a and the rectangular chute 1a and cannot rotate along the circumferential direction, so that when the first screw rod 14 rotates, the screw rod slide block 16 slides on the first screw rod 14 to drive the hip base plate 2 and the back backup plate 4 to slide;

the working process of the rotating device is as follows: the medical staff rotates the knob 18a to make the second screw rod 18 rotate on the rotary connecting seat 19, when the second screw rod 18 rotates, the hinge block 17 slides on the second screw rod 18 through the screw fit between the hinge block 17 and the second screw rod 18, when the hinge block 17 slides on the second screw rod 18, the horizontal position changes, through the rotation fit between the hinge block 17 and the first hinge boss 9 and the second hinge boss 11, when the hinge block 17 slides on the second screw rod 18, the hinge block 17 drives the first hinge boss 9 or the second hinge boss 11 to rotate, so as to make the leg pad 3 and the back press plate 5 rotate, when the first hinge boss 9 and the second hinge boss 11 rotate, the end part movement track is arc-shaped, therefore, when the first hinge boss 9 and the second hinge boss 11 are driven by the hinge block 17 to rotate, the first hinge boss 9 and the second hinge boss 11 simultaneously drive the second screw rod 18 to rotate on the horizontal plane through the hinge block 17, the second screw 18 drives the rotary connecting base 19 to rotate on the hinge base 21.

The above embodiments are merely illustrative of the technical ideas of the present invention, and the technical ideas of the present invention and the modifications thereof based on the technical solutions are within the scope of the present invention.

Claims

1. A medical painless obstetrical injection body position restraint device is characterized by comprising a bed body (1), a hip base plate (2), leg base plates (3), a back backup plate (4), a back pressing plate (5), two sliding devices and two rotating devices, wherein the lower end of the bed body (1) is provided with a plurality of bed legs (6), and the lower end of each bed leg (6) is provided with a universal belt brake caster (7);

one side of the bed body (1) along the width direction is provided with a rectangular sliding chute (1 a);

the two sliding devices are arranged at the lower end of the bed body (1) side by side, are arranged right below the rectangular sliding chute (1 a) and are symmetrically arranged along the length direction of the rectangular sliding chute (1 a);

a first hinge seat (8) is formed at one end of the hip base plate (2) outwards, a first hinge boss (9) matched with the first hinge seat (8) is formed at one end of the leg base plate (3) outwards, one end, far away from the hip base plate (2), of the first hinge seat (8) is hinged with one end, close to the leg base plate (3), of the first hinge boss (9), a rotating device is rotatably arranged on the hip base plate (2) and is rotatably connected with the leg base plate (3), the hip base plate (2) and the leg base plate (3) are both slidably arranged at the upper end of the bed body (1), and the hip base plate (2) is connected with a sliding device;

the outside shaping of one end of back backup plate (4) is equipped with second free bearing (10), the outside shaping of one end of back clamp plate (5) is equipped with and articulates boss (11) with second free bearing (10) matched with second, the one end that back backup plate (4) were kept away from in second free bearing (10) is articulated with the one end that articulated boss (11) of second are close to back clamp plate (5), another rotating device rotates and sets up on back backup plate (4), and this rotating device rotates with back clamp plate (5) and is connected, back backup plate (4) all slide with back clamp plate (5) and set up in the upper end of the bed body (1), and back backup plate (4) link to each other with another slider.

2. The medical obstetrical painless injection position restraint device as claimed in claim 1, characterized in that: the bed body is characterized in that a silica gel mattress (12) is arranged at the upper end of the bed body (1), and rectangular through holes matched with the rectangular sliding grooves (1 a) are formed in the positions, corresponding to the rectangular sliding grooves (1 a), of the silica gel mattress (12).

3. The medical obstetrical painless injection position restraint device as claimed in claim 2, characterized in that: the sliding device comprises two bearing seats (13), a first screw rod (14), a crank (15) and a screw rod sliding block (16), wherein the two bearing seats (13) are respectively sleeved at two ends of the first screw rod (14), one end of the first screw rod (14) is exposed out of the bearing seats (13), the crank (15) is arranged at one end of the first screw rod (14) exposed out of the bearing seats (13), the two bearing seats (13) are both arranged at the lower end of the bed body (1), the first screw rod (14) is positioned under the rectangular sliding chute (1 a), the length direction of the first screw rod (14) is parallel to the length direction of the rectangular sliding chute (1 a), one bearing seat (13) is arranged at one end of the rectangular sliding chute (1 a) along the length direction, the other bearing seat (13) is arranged at the middle section of the rectangular sliding chute (1 a), the screw rod sliding block (16) is sleeved on the first screw rod (14), and the first screw rod (14) is in threaded fit with the screw rod sliding block (16), a connecting plate (16 a) is arranged on the screw rod sliding block (16), and the upper end of the connecting plate (16 a) is arranged in the rectangular sliding groove (1 a) in a sliding manner.

4. The medical obstetrical painless injection position restraint device as claimed in claim 3, characterized in that: the hip cushion plate (2) and the back rest plate (4) are respectively connected with the connecting plates (16 a) in the two sliding devices.

5. The medical obstetrical painless injection position restraint device as claimed in claim 1, characterized in that: the rotating device comprises a hinge block (17), a second screw rod (18), a rotating connecting seat (19), a gland (20) and a knob (18 a), one end of the second screw rod (18) is outwards formed and provided with a circular step, a circular groove matched with the circular step on the second screw rod (18) is formed in the rotating connecting seat (19), the circular step of the second screw rod (18) is rotatably arranged in the circular groove on the second screw rod (18), the gland (20) is sleeved on the second screw rod (18), the gland (20) is connected with the rotating connecting seat (19), hinge seats (21) are respectively arranged at the side ends of the hip backing plate (2) and the back backup plate (4) far away from the bed body (1), the rotating connecting seat (19) is hinged with the hinge seats (21), the middle section of one end of the first hinge boss (9) far away from the leg backing plate (3) and the middle section of one end of the second hinge boss (11) far away from the back pressing plate (5) are respectively provided with a hinge groove (22), articulated piece (17) one end is articulated with articulated groove (22), is equipped with the screw hole on articulated piece (17), and screw hole on articulated piece (17) is passed to second lead screw (18) one end, and screw-thread fit between second lead screw (18) and articulated piece (17), and knob (18 a) set up in second lead screw (18) keep away from the one end of rotating connecting seat (19).

6. The medical obstetrical painless injection position restraint device as claimed in claim 1, characterized in that: one side of the hip base plate (2), the leg base plate (3), the back backup plate (4) and the back pressing plate (5) close to the bed body (1) is provided with an air bag cushion (23).

7. The medical obstetrical painless injection position restraint device as claimed in claim 1, characterized in that: two first tightening belts (24) are symmetrically arranged at the upper end and the lower end of the hip base plate (2), the first tightening belts (24) are made of elastic cloth, and a strip-shaped air bag cushion (25) is sleeved on each first tightening belt (24) in a sliding manner; the free end of one first tightening belt (24) is provided with a first Chinese character 'ri' buckle (26), and the free end of the other first tightening belt (24) is movably connected with the first Chinese character 'ri' buckle (26).

8. The medical obstetrical painless injection position restraint device as claimed in claim 1, characterized in that: the upper end and the lower extreme symmetry that gasbag cushion (23) one side was kept away from in shank backing plate (3) are equipped with two second lacing tape (27), second lacing tape (27) adopt the preparation of elasticity cloth, and the free end of a second lacing tape (27) is equipped with second day word and detains (28), and the free end of another and second day word detain (28) swing joint.