CN111166445B - Clinical practise midwifery subassembly of obstetrical department - Google Patents

Abstract

The utility model discloses an obstetrical clinical delivery assisting assembly which comprises a shell, wherein a through hole is formed in the left side of the shell, a first shaft is limited and rotated through the through hole, a worm wheel is fixedly connected to the surface of the first shaft close to the left end, a worm is meshed with the rear side of the worm wheel, a second shaft is fixedly connected to the front end and the rear end of the worm, a positioning plate is fixedly connected to the left side of the shell, the surface of one end, far away from the worm, of the second shaft penetrates through the positioning plate and is limited and rotated on the positioning plate, a cylindrical cam is fixedly sleeved on the surface of the first shaft and is arranged in the shell, and a cam is fixedly connected to the surface of the first shaft close to the right end. According to the utility model, through the matching use of the structures, the problems that in the actual use process, as the traditional negative pressure adjusting device is far away from the fetal head suction disc, doctors are difficult to simultaneously regulate and control the fetal head suction disc and the negative pressure adjusting device, potential safety hazards exist during use, and inconvenience is brought to use are solved.

Description

Clinical practise midwifery subassembly of obstetrical department

Technical Field

The utility model relates to the technical field of obstetrical clinical equipment, in particular to an obstetrical clinical delivery assisting component.

Background

The obstetric apparatus is simple and convenient to operate, can reduce head injury and quickens delivery; the obstetric apparatus comprises an aspirator and an expander, the aspirator comprises a silicon rubber sucker and a negative pressure device, the negative pressure device is provided with a negative pressure cylinder, a piston with a connecting rod is arranged in the negative pressure cylinder, an extending part is arranged on the negative pressure cylinder in the opposite direction of the sucker, the expander is provided with a blade and an adjusting handle, the adjusting handle and the extending part move up and down through a corresponding track, and the blade and the negative pressure cylinder are movably connected through a supporting rod. After the structure is adopted, the pelvic floor can be expanded in the labor process to reduce the resistance to the fetal head, so that the pressure on the fetal head is reduced; most of the prior obstetric apparatus have single function, are not convenient enough to use and are difficult to meet the requirement of actual obstetric, so that obstetric clinical obstetric equipment is provided, for example, a negative pressure fetal head suction obstetric apparatus for obstetrics and gynecology department disclosed by a Chinese patent CN2045 catheter (18) 21U, and belongs to the technical field of medical appliances. The technical scheme of the utility model is as follows: the negative pressure tire vacuum extractor comprises a tire head suction disc and a negative pressure tank body, and is characterized in that a connecting component is arranged on the right side of the tire head suction disc, a handheld handle is arranged on the right side of the connecting component, the handheld handle is connected with the negative pressure tank body through a negative pressure transmission pipe, a sealing cover is arranged on the negative pressure tank body, a negative pressure adjusting device is arranged on the sealing cover, an air exhaust pipe is arranged on the right side of the negative pressure tank body, and an electric power assembly is connected with the negative pressure tank body through the air exhaust pipe. The utility model has simple structure and convenient use, skillfully solves the problem that the fetus cannot be effectively fixed when medical staff carry out the obstetrical and gynecological delivery, reduces the time required by the delivery, is simple and convenient to operate, saves time and labor, and greatly lightens the working difficulty of the medical staff;

however, in the actual use process, because the traditional negative pressure adjusting device is far away from the fetal head suction disc, doctors are difficult to simultaneously regulate and control the fetal head suction disc and the negative pressure adjusting device, potential safety hazards exist when the device is used, and inconvenience is brought to use.

Disclosure of Invention

The utility model aims to provide an obstetrical clinical midwifery assembly, which improves the traditional device and solves the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a clinical practise midwifery subassembly of obstetrical department, includes the casing, the through-hole has been seted up and has an axle I through the spacing rotation of through-hole in the left side of casing, the epaxial fixed surface who leans on the left end even has the worm wheel, the rear side meshing of worm wheel has the worm, the equal fixedly connected with axle two in both ends around the worm, the left side fixedly connected with locating plate of casing, the surface that keeps away from worm one end on the axle two runs through the locating plate and spacing rotation on the locating plate.

The surface of the first shaft is fixedly sleeved with a cylindrical cam, the cylindrical cam is arranged in a shell, the surface of the first shaft close to the right end is fixedly connected with a cam, a roller is connected in a sliding groove of the outer contour of the cylindrical cam in a sliding manner, the surface of the roller is fixedly connected with a connecting plate, the right side of the connecting plate is fixedly connected with a first transmission rod, the right end of the first transmission rod is fixedly connected with a positioning sleeve, the inner wall of the positioning sleeve is connected with a cylinder in a sliding manner, the rear end of the cylinder is fixedly connected with a squeezing plate, the rear side of the squeezing plate is connected with the surface of the cam in a sliding manner, the front end of the cylinder is provided with a groove and is fixedly connected with a negative pressure pump through the groove, the negative pressure pump is externally connected with an electric power assembly device, the front side of the shell is provided with a through hole and is fixedly connected with a guide pipe through the through hole, the front end of the guide pipe is fixedly connected with a sucker, and the right side of the positioning sleeve is fixedly connected with a resetting device, the right side of the resetting device is fixedly connected with the right side of the inner wall of the shell.

Preferably, the resetting device comprises a second transmission rod, the left end of the second transmission rod is fixedly connected with the right side of the positioning sleeve, a positioning pipe is sleeved on the surface of the second transmission rod, the right end of the positioning pipe is fixedly connected with the right side of the inner wall of the shell, a second pressure spring is fixedly connected with the right end of the second transmission rod, and the right end of the second pressure spring is fixedly connected with the right side of the inner wall of the shell.

Preferably, one end of the second shaft, which is far away from the worm, is fixedly connected with a knob, and anti-skid grains are formed in the surface of the knob.

Preferably, the left side of the inner wall of the shell is fixedly connected with a positioning rod, and the surface of the positioning rod penetrates through the connecting plate and is in sliding connection with the connecting plate.

Preferably, the corners of the shell are all subjected to arc transition treatment, and the right side of the shell is fixedly connected with a rubber pad.

Preferably, the front end of the groove is provided with an inclined plane, and the rear end of the conduit is also provided with an inclined plane matched with the front end of the groove.

Preferably, the front end of the sucker is fixedly connected with a rubber pad, and the surface of the rubber pad is provided with air holes.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, the second shaft is driven to rotate manually through the handheld shell, and the worm rotates along with the second shaft synchronously; the worm wheel meshed with the worm is driven by the worm to drive the shaft to rotate together step by step, and the worm wheel have a reverse locking effect, namely the worm cannot be rotated by driving the worm wheel to rotate;

the worm wheel drives the first shaft to synchronously rotate, and the cylindrical cam on the first shaft synchronously rotates along with the first shaft; the roller on the outer contour sliding groove of the cylindrical cam has a tendency of synchronous rotation along with the roller, but cannot synchronously rotate along with the cylindrical cam under the limitation of the connecting plate, the first transmission rod, the first positioning sleeve and the resetting device, the roller and the sliding groove on the outer contour of the cylindrical cam can slide relatively, and the roller can synchronously move left and right by the aid of the rotation adjustment in the positive and negative directions of the cylindrical cam and the guide of the outer contour sliding groove on the cylindrical cam, and the connecting plate, the first transmission rod, the positioning sleeve, the cylinder, the extrusion plate, the first pressure spring, the negative pressure pump and the resetting device are driven by the roller; as shown in fig. 1, the roller drives the first transmission rod and the positioning sleeve to move to the rightmost position;

meanwhile, the rotation of the first shaft drives the cam to synchronously rotate, and the surface of the first shaft is always in contact with the rear side of the extrusion plate in the rotation process of the cam; as shown in fig. 1, when the flange surface on the cam contacts with the rear side of the extrusion plate, the extrusion plate is extruded, and after the elastic force of the first compression spring is overcome, the extrusion plate can drive the cylinder to move forward in the positioning sleeve and finally can contact with the rear end of the conduit, so that the negative pressure pump, the conduit and the suction cup are communicated, at the moment, the front end of the suction cup is covered on the head of the fetus, so that a sealed environment can be formed, negative pressure is generated in the environment by the negative pressure pump, the whole casing is pulled by the negative pressure, and the head of the fetus can be pulled by traction force to achieve the dragging effect, so that the fetus can rapidly move in the birth canal and can be completely taken out of the mother under the assistance of a doctor;

in a similar way, when the concave edge surface on the cam is contacted with the rear side of the extrusion plate, the extrusion plate can drive the whole cylinder to move backwards under the action of the elastic force of the first pressure spring, so that the front end of the cylinder is separated from the rear end of the guide pipe, the space sealing is relieved, meanwhile, the influence of the negative pressure pump on the negative pressure environment is reduced, and the sucking disc can be easily taken down from the head of the fetus; in the scheme, the right movement of the connecting plate with the column body and the negative pressure pump and the forward movement of the column body with the negative pressure pump are synchronously carried out, and the left movement of the negative pressure pump and the backward movement of the negative pressure pump are also synchronously carried out in the same way; namely, the negative pressure pump moves towards the upper right and the lower left in the shell; during the period, the opening and closing of the front end of the cylinder and the rear end of the guide pipe can be adjusted at any time by rotating the adjusting worm, so that the negative pressure traction can be quickly cancelled or quickly carried out again;

thirdly, the utility model solves the problem that in the actual use process, because the traditional negative pressure adjusting device is far away from the fetal head suction disc, doctors are difficult to simultaneously regulate and control the fetal head suction disc and the negative pressure adjusting device, the potential safety hazard exists during use, and the inconvenience is brought to the use.

Drawings

FIG. 1 is a front cross-sectional view of a housing of the present invention;

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

fig. 3 is a left side view of the cam of the present invention.

In the figure: the device comprises ashell 1, a 2-shaft I, a 3-worm wheel, a 4-worm, a 5-shaft II, a 6-positioning plate, a 7-cylindrical cam, an 8-cam, a 9-roller, a 10-connecting plate, a 11-transmission rod I, a 12-positioning sleeve, a 13-column body, a 14-extrusion plate, a 15-pressure spring I, a 16-groove, a 17-negative pressure pump, an 18-guide pipe, a 19-suction cup, a 20-reset device, a 21-transmission rod II, a 22-positioning pipe, a 23-pressure spring II, a 24-knob, a 25-positioning rod and a 26-rubber pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a technical solution: an obstetrical clinical midwifery assembly comprises ashell 1, corners of theshell 1 are subjected to arc transition treatment, a rubber pad is fixedly connected to the right side of theshell 1, and the skin of a doctor can be prevented from being scratched when the obstetrical clinical midwifery assembly is used through the arc transition treatment of the corners of theshell 1; the rubber pad on the right side of theshell 1 is convenient for a doctor to attach the palm of the right palm to the shell, when the head of a fetus is pulled and pulled, the friction force between the fetus and a palm piece can be increased, the accidental hand drop is avoided, the surface of theshell 1 is provided with an air hole for balancing air pressure, the left side of theshell 1 is provided with a through hole and a shaft I2 is limited and rotated through the through hole, the surface of the shaft I2 close to the left end is fixedly connected with aworm wheel 3, the rear side of theworm wheel 3 is meshed with aworm 4, and theworm wheel 3 meshed with theworm 4 is driven by theworm 4 to drive the shaft I2 to synchronously rotate; because theworm 4 and theworm wheel 3 have reverse locking effect, namely theworm 4 can not be rotated by driving theworm wheel 3 to rotate, the shaft I2 can still keep the state when the driving is released after the driving rotation of the shaft I2 is released by the locking effect; asecond shaft 5 is fixedly connected to the front end and the rear end of theworm 4, thesecond shaft 5 is manually driven to rotate through thehandheld shell 1, and theworm 4 synchronously rotates along with thesecond shaft 5; apositioning plate 6 is fixedly connected to the left side of theshell 1, the surface of one end, far away from theworm 4, of thesecond shaft 5 penetrates through thepositioning plate 6 and rotates in a limited mode on thepositioning plate 6, aknob 24 is fixedly connected to one end, far away from theworm 4, of thesecond shaft 5, anti-skid grains are formed in the surface of theknob 24, thesecond shaft 5 can conveniently drive theworm 4 to rotate through the arrangement of theknob 24, and the anti-skid grains are formed in the anti-skid grains, so that the rotation is more labor-saving;

the surface of thefirst shaft 2 is fixedly sleeved with acylindrical cam 7, thefirst shaft 2 is driven to synchronously rotate through theworm wheel 3, and thecylindrical cam 7 on thefirst shaft 2 can synchronously rotate along with thefirst shaft 2; thecylindrical cam 7 is arranged in theshell 1, the surface of thefirst shaft 2 close to the right end is fixedly connected with acam 8, aroller 9 is connected in a sliding groove of the outer contour of thecylindrical cam 7 in a sliding manner, the surface of theroller 9 is fixedly connected with a connectingplate 10, the left side of the inner wall of theshell 1 is fixedly connected with apositioning rod 25, the surface of thepositioning rod 25 penetrates through theconnecting plate 10 and is connected with the connectingplate 10 in a sliding manner, and the movement track of the connectingplate 10 is further limited through the arrangement of thepositioning rod 25, so that the connecting plate can stably move horizontally; the right side of the connectingplate 10 is fixedly connected with afirst transmission rod 11, the right end of thefirst transmission rod 11 is fixedly connected with apositioning sleeve 12, the inner wall of thepositioning sleeve 12 is connected with acylinder 13 in a sliding manner, the surface of thecylinder 13 is provided with air holes, the rear end of thecylinder 13 is fixedly connected with anextrusion plate 14, the rear side of theextrusion plate 14 is connected with the surface of thecam 8 in a sliding manner, the front end of thecylinder 13 is provided with agroove 16 and is fixedly connected with anegative pressure pump 17 through thegroove 16, theworm wheel 3 drives thefirst shaft 2 to synchronously rotate, and thecylindrical cam 7 on thefirst shaft 2 synchronously rotates along with thefirst shaft 2; therollers 9 on the outer contour sliding grooves of thecylindrical cam 7 have a tendency of synchronous rotation with the rollers, but the rollers cannot synchronously rotate along with thecylindrical cam 7 under the limitation of the connectingplate 10, thefirst transmission rod 11, thepositioning sleeve 12 and the resettingdevice 20, therollers 9 can slide relative to the sliding grooves on the outer contour of thecylindrical cam 7 and can synchronously move left and right through the forward and reverse rotation adjustment of thecylindrical cam 7 and the guide of the outer contour sliding grooves on thecylindrical cam 7, so that therollers 9 can drive the connectingplate 10, thefirst transmission rod 11, thepositioning sleeve 12, thecylinder 13, theextrusion plate 14, thefirst pressure spring 15, thenegative pressure pump 17 and the resettingdevice 20 to synchronously move left and right; as shown in fig. 1, theroller 9 with thefirst transmission rod 11, thepositioning sleeve 12 and the like moves to the rightmost position; meanwhile, the rotation of thefirst shaft 2 drives thecam 8 to synchronously rotate, and the surface of thecam 8 is always in contact with the rear side of theextrusion plate 14 in the rotation process of thecam 8; as shown in fig. 1, when the flange surface on thecam 8 contacts the rear side of thecompression plate 14, thecompression plate 14 is compressed, and after the elastic force of thefirst compression spring 15 is overcome, thecompression plate 14 moves forward in thepositioning sleeve 12 with thecolumn 13 and finally can contact the rear end of theconduit 18, so that thenegative pressure pump 17, theconduit 18 and thesuction cup 19 are communicated, at this time, the front end of thesuction cup 19 is covered on the head of the fetus, a sealed environment can be formed, and negative pressure is generated in the environment by thenegative pressure pump 17, through the negative pressure, the whole body of theshell 1 is pulled, the head of the fetus is also subjected to traction force to achieve a dragging effect, so that the fetus can rapidly move in the birth canal and be completely taken out of the mother with the assistance of a doctor; thenegative pressure pump 17 is externally connected with an electric power component device, the electric power gradual device comprises a multifunctional display screen, a power switch, a voltage reduction key, a pressure boosting key, a pressure stabilizing key, a negative pressure indicator and the like, the device is fully disclosed in the description of the reference documents mentioned in the background technology, the scheme is only used, and the scheme is not improved and is not repeated herein; the front side of theshell 1 is provided with a through hole and is fixedly connected with aconduit 18 through the through hole, when the concave edge surface on thecam 8 is contacted with the rear side of theextrusion plate 14, theextrusion plate 14 can drive the whole body of thecolumn body 13 to move backwards under the action of the elastic force of thefirst compression spring 15, so that the front end of thecolumn body 13 is separated from the contact with the rear end of theconduit 18, the space sealing is relieved, meanwhile, the influence of thenegative pressure pump 17 on the negative pressure environment is reduced, and thesuction cup 19 can be easily taken down from the head of the fetus; in the scheme, the right movement of the connectingplate 10 with thecolumn body 13 and thenegative pressure pump 17 and the forward movement of thecolumn body 13 with thenegative pressure pump 17 are synchronously performed, and the left movement of thenegative pressure pump 17 and the backward movement of thenegative pressure pump 17 are also synchronously performed in the same way; that is, thenegative pressure pump 17 moves to the upper right and lower left in thecasing 1; during the period, the opening and closing of the front end of thecylinder 13 and the rear end of theguide pipe 18 can be adjusted at any time by rotating the adjustingworm 4, so that the negative pressure traction can be quickly cancelled or quickly carried out again; the front end of thegroove 16 is provided with an inclined plane, the rear end of theguide pipe 18 is also provided with an inclined plane matched with the front end of thegroove 16, and theguide pipe 18 can block the motion path of thegroove 16 through the matching between thegroove 16 and the inclined plane of theguide pipe 18, so that the phenomenon that thegroove 16 moves excessively and is positioned wrongly, thegroove 16 and theguide pipe 18 are difficult to be matched and matched accurately, and a through channel is established; the front end of theconduit 18 is fixedly connected with asucker 19, the front end of thesucker 19 is fixedly connected with arubber pad 26, the surface of therubber pad 26 is provided with air holes, thesucker 19 is prevented from directly contacting with the head of the fetus through the arrangement of therubber pad 26 on thesucker 19, the head of the fetus is protected by buffering through therubber pad 26, and the generated negative pressure acts on the head of the fetus through the air holes on therubber pad 26, so that negative pressure attraction is generated; the right side of thepositioning sleeve 12 is fixedly connected with a resettingdevice 20, the resettingdevice 20 comprises asecond transmission rod 21, the left end of thesecond transmission rod 21 is fixedly connected with the right side of thepositioning sleeve 12, apositioning pipe 22 is sleeved on the surface of thesecond transmission rod 21, the right end of thepositioning pipe 22 is fixedly connected with the right side of the inner wall of theshell 1, asecond compression spring 23 is fixedly connected with the right end of thesecond transmission rod 21, the right end of thesecond compression spring 23 is fixedly connected with the right side of the inner wall of theshell 1, and through the matching of thesecond transmission rod 21, thepositioning pipe 22 and thesecond compression spring 23, on one hand, the moving tracks of theroller 9 and the connectingplate 10 are limited, and on the other hand, the stability of the horizontal movement of theconnecting plate 10, thefirst transmission rod 11, thepositioning sleeve 12 and thecylinder 13 can be ensured; the right side of the resettingdevice 20 is fixedly connected with the right side of the inner wall of theshell 1.

The working principle is as follows: when the obstetrical clinical delivery assisting assembly is used, thesecond shaft 5 is manually driven to rotate through thehandheld shell 1, and theworm 4 synchronously rotates along with thesecond shaft 5; theworm wheel 3 meshed with theworm 4 is driven by theworm 4 to drive thefirst shaft 2 to synchronously rotate, and theworm 4 and theworm wheel 3 have reverse locking effect, namely theworm 4 cannot rotate by driving theworm wheel 3 to rotate, and thefirst shaft 2 can still keep a state when the driving is released after the driving rotation of thefirst shaft 2 is released through the locking effect; according to the utility model, theworm wheel 3 drives the shaft I2 to synchronously rotate, and thecylindrical cam 7 on the shaft I2 synchronously rotates along with the shaft I2; therollers 9 on the outer contour sliding grooves of thecylindrical cam 7 have a tendency of synchronous rotation with the rollers, but the rollers cannot synchronously rotate along with thecylindrical cam 7 under the limitation of the connectingplate 10, thefirst transmission rod 11, thepositioning sleeve 12 and the resettingdevice 20, therollers 9 can slide relative to the sliding grooves on the outer contour of thecylindrical cam 7 and can synchronously move left and right through the forward and reverse rotation adjustment of thecylindrical cam 7 and the guide of the outer contour sliding grooves on thecylindrical cam 7, so that therollers 9 can drive the connectingplate 10, thefirst transmission rod 11, thepositioning sleeve 12, thecylinder 13, theextrusion plate 14, thefirst pressure spring 15, thenegative pressure pump 17 and the resettingdevice 20 to synchronously move left and right; as shown in fig. 1, theroller 9 with thefirst transmission rod 11, thepositioning sleeve 12 and the like moves to the rightmost position;

meanwhile, the rotation of thefirst shaft 2 drives thecam 8 to synchronously rotate, and the surface of thecam 8 is always in contact with the rear side of theextrusion plate 14 in the rotation process of thecam 8; as shown in fig. 1, when the flange surface on thecam 8 contacts the rear side of thecompression plate 14, thecompression plate 14 is compressed, and after the elastic force of thefirst compression spring 15 is overcome, thecompression plate 14 moves forward in thepositioning sleeve 12 with thecolumn 13 and finally can contact the rear end of theconduit 18, so that thenegative pressure pump 17, theconduit 18 and thesuction cup 19 are communicated, at this time, the front end of thesuction cup 19 is covered on the head of the fetus, a sealed environment can be formed, and negative pressure is generated in the environment by thenegative pressure pump 17, through the negative pressure, the whole body of theshell 1 is pulled, the head of the fetus is also subjected to traction force to achieve a dragging effect, so that the fetus can rapidly move in the birth canal and be completely taken out of the mother with the assistance of a doctor; similarly, when the concave edge surface on thecam 8 contacts with the rear side of theextrusion plate 14, under the action of the elastic force of thefirst compression spring 15, theextrusion plate 14 can drive the whole body of thecolumn body 13 to move backwards, so that the front end of thecolumn body 13 is separated from the rear end of theconduit 18, the space sealing is released, meanwhile, the influence of thenegative pressure pump 17 on the negative pressure environment is reduced, and thesuction cup 19 can be easily removed from the head of the fetus; in the scheme, the right movement of the connectingplate 10 with thecolumn body 13 and thenegative pressure pump 17 and the forward movement of thecolumn body 13 with thenegative pressure pump 17 are synchronously performed, and the left movement of thenegative pressure pump 17 and the backward movement of thenegative pressure pump 17 are also synchronously performed in the same way; that is, thenegative pressure pump 17 moves to the upper right and lower left in thecasing 1; during the period, the opening and closing of the front end of thecylinder 13 and the rear end of theguide pipe 18 can be adjusted at any time by rotating the adjustingworm 4, so that the negative pressure traction can be quickly cancelled or quickly carried out again; through the cooperation use between the above-mentioned structure, solved in the in-service use process, because traditional negative pressure adjusting device is far away apart from fetal head attraction disc distance, the doctor is difficult to have concurrently and attracts dish and negative pressure adjusting device to the fetal head to regulate and control simultaneously, uses to have the potential safety hazard, gives the problem of inconvenience of using.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. An obstetrical clinical midwifery assembly, characterized in that: the worm gear positioning device comprises a shell (1), wherein a through hole is formed in the left side of the shell (1), a first shaft (2) is limited and rotated through the through hole, a worm wheel (3) is fixedly connected to the surface of the first shaft (2) close to the left end, a worm (4) is meshed with the rear side of the worm wheel (3), a second shaft (5) is fixedly connected to the front end and the rear end of the worm (4), a positioning plate (6) is fixedly connected to the left side of the shell (1), and the surface of one end, far away from the worm (4), of the second shaft (5) penetrates through the positioning plate (6) and is limited and rotated on the positioning plate (6);

the surface of the first shaft (2) is fixedly sleeved with a cylindrical cam (7), the cylindrical cam (7) is arranged in the shell (1), the surface of the first shaft (2) close to the right end is fixedly connected with a cam (8), a roller (9) is slidably connected in a sliding groove of an outer contour of the cylindrical cam (7), the surface of the roller (9) is fixedly connected with a connecting plate (10), the right side of the connecting plate (10) is fixedly connected with a first transmission rod (11), the right end of the first transmission rod (11) is fixedly connected with a positioning sleeve (12), the inner wall of the positioning sleeve (12) is slidably connected with a cylinder (13), the rear end of the cylinder (13) is fixedly connected with an extrusion plate (14), the rear side of the extrusion plate (14) is slidably connected with the surface of the cam (8), the front end of the cylinder (13) is provided with a groove (16) and is fixedly connected with a negative pressure pump (17) through the groove (16), the negative pressure pump (17) is externally connected with an electric power assembly device, a through hole is formed in the front side of the shell (1) and is fixedly connected with a guide pipe (18) through the through hole, a sucking disc (19) is fixedly connected to the front end of the guide pipe (18), a reset device (20) is fixedly connected to the right side of the positioning sleeve (12), and the right side of the reset device (20) is fixedly connected with the right side of the inner wall of the shell (1);

the resetting device (20) comprises a second transmission rod (21), the left end of the second transmission rod (21) is fixedly connected with the right side of the positioning sleeve (12), a positioning pipe (22) is sleeved on the surface of the second transmission rod (21), the right end of the positioning pipe (22) is fixedly connected with the right side of the inner wall of the shell (1), a second pressure spring (23) is fixedly connected with the right end of the second transmission rod (21), and the right end of the second pressure spring (23) is fixedly connected with the right side of the inner wall of the shell (1);

the left side of casing (1) inner wall fixedly connected with locating lever (25), the surface of locating lever (25) runs through connecting plate (10) and with connecting plate (10) sliding connection.

2. An obstetric clinical midwifery assembly according to claim 1, wherein: one end of the second shaft (5) far away from the worm (4) is fixedly connected with a knob (24), and anti-skid grains are arranged on the surface of the knob (24).

3. An obstetric clinical midwifery assembly according to claim 1, wherein: the corners of the shell (1) are all subjected to arc transition treatment, and a rubber pad is fixedly connected to the right side of the shell (1).

4. An obstetric clinical midwifery assembly according to claim 1, wherein: the front end of the groove (16) is provided with an inclined plane, and the rear end of the conduit (18) is also provided with an inclined plane matched with the front end of the groove (16).

5. An obstetric clinical midwifery assembly according to claim 1, wherein: the front end of the sucker (19) is fixedly connected with a rubber pad (26), and air holes are formed in the surface of the rubber pad (26).

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