CN113679460A

CN113679460A - Obstetrical device for obstetrics and gynecology department

Info

Publication number: CN113679460A
Application number: CN202110914463.9A
Authority: CN
Inventors: 范富莲
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-10
Filing date: 2021-08-10
Publication date: 2021-11-23
Anticipated expiration: 2041-08-10
Also published as: CN113679460B

Abstract

The invention discloses a obstetric device for obstetrics and gynecology department, and relates to the technical field of the obstetric device for obstetrics and gynecology department. The negative-pressure suction device comprises a main suction disc, the main suction disc is connected with a negative-pressure device, a protective cover is arranged on the outer wall of the main suction disc, a sealing cavity is formed between the inner wall of the protective cover and the outer wall of the main suction disc and is communicated with the negative-pressure device, a plurality of auxiliary suction discs penetrate through the main suction disc, the auxiliary suction discs are communicated with the sealing cavity, the orientation angles of the auxiliary suction discs in the main suction disc are adjustable, and the auxiliary suction discs have the tendency of moving in the direction away from the sealing cavity. The contact area between the suction apparatus and the head-up can be increased, and the traction of the head-up is ensured under the action of smaller suction force.

Description

Obstetrical device for obstetrics and gynecology department

Technical Field

The invention relates to the technical field of obstetric devices in obstetrics and gynecology department, in particular to a obstetric device in obstetrics and gynecology department.

Background

During the process of parturient delivery, the technique of raising head and sucking is a commonly used technique to help the delivery of fetus. Usually, the suction apparatus is absorbed on the lifting head through proper negative pressure, and then outward traction force is applied to the suction apparatus, so as to realize assistance in pulling the baby out of the birth canal of the lying-in woman. However, the existing suction apparatus only sucks on the head through one suction cup, if the negative pressure is too low, the suction apparatus is easy to fall off from the fetal head, and if the negative pressure is too high, discomfort or even injury to the head of the infant can be caused.

Therefore, a midwifery device for obstetrics and gynecology department is needed, which can increase the contact area between the suction apparatus and the head-up and realize the traction of the head-up under the action of smaller suction force.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a obstetric and gynecologic delivery device which can increase the contact area between an aspirator and a head-up and realize the traction of the head-up under the action of smaller suction force.

The invention specifically adopts the following technical scheme:

the obstetrical and gynecological delivery device comprises a main suction disc, wherein the main suction disc is connected with a negative pressure device, the outer wall of the main suction disc is provided with a protective cover, a sealing cavity is formed between the inner wall of the protective cover and the outer wall of the main suction disc, the sealing cavity is communicated with the negative pressure device, the main suction disc is provided with a plurality of auxiliary suction discs in a penetrating mode, the auxiliary suction discs are communicated with the sealing cavity, the orientation angles of the auxiliary suction discs in the main suction disc are adjustable, and the auxiliary suction discs have the tendency of moving in the direction away from the sealing cavity.

The invention is further preferable that the main suction disc is provided with a plurality of through holes, the through holes are internally provided with connecting balls, the number of the auxiliary suction discs corresponds to the number of the through holes one by one, the auxiliary suction discs are connected with guide pipes, and the guide pipes penetrate through the connecting balls and communicate the space in the auxiliary suction discs with the sealed cavity.

The invention is further preferable that the inner wall of the through hole is provided with a bushing, the bushing is provided with a positioning hole in a penetrating manner along the thickness direction, the positioning hole comprises a positioning section and a limiting section, the inner diameter of the positioning section is larger than the diameter of the connecting ball, the limiting section is positioned at one end close to the sealing cavity, the inner diameter of the limiting section is gradually reduced along the direction close to the sealing cavity, the maximum inner diameter of the limiting section is smaller than the diameter of the connecting ball, and a limiting component for limiting the connecting ball is arranged on the outer side of the positioning section.

According to a further preferred embodiment of the invention, the limiting component comprises a limiting plate and a fixing screw, the limiting plate is provided with a limiting hole, the inner wall of the limiting hole is a cambered surface matched with the connecting ball, and the limiting plate and the bushing are connected with each other through the fixing screw.

The invention is further preferable that the inner wall of the limiting section is provided with a first sealing gasket, and the inner wall of the limiting hole is provided with a second sealing gasket.

Preferably, the connecting ball is provided with a fixing hole for the guide tube to pass through, and a sealing ring is arranged between the outer wall of the guide tube and the inner wall of the fixing hole.

According to the invention, as further preferable, a compression spring is sleeved outside the conduit, the compression spring is positioned between the auxiliary suction disc and the limiting plate, and the limiting plate is arranged at one end of the conduit, which is positioned in the sealing cavity.

As a further preferable aspect of the present invention, the negative pressure device includes an inner tube, an outer tube, and a negative pressure tube; the negative pressure pipe is internally provided with a piston, one end of the piston is connected with a push rod, the negative pressure pipe is communicated with the outer pipe, the outer pipe is sleeved on the inner pipe, a connecting rod is arranged between the outer pipe and the inner pipe, a guide cavity is formed between the inner wall of the outer pipe and the outer wall of the inner pipe, one end of the outer pipe is communicated with the seal cavity, the other end of the outer pipe is communicated with the negative pressure pipe, one end of the inner pipe is communicated with the space in the main suction disc, and the other end of the inner pipe is communicated with the guide cavity.

According to the invention, as further preferable, a gap is arranged between the inner tube and the negative pressure tube, the front end of the piston is provided with a positioning rod, the front end of the positioning rod is connected with a sealing block, the sealing block is positioned in the inner tube, and the shape of the sealing block is matched with the inner wall of the inner tube.

The invention is further preferable that the outer wall of the push rod is provided with a locking groove along the axial direction, the side wall of the locking groove is provided with a plurality of limiting grooves, the outer wall of the negative pressure pipe is provided with a positioning frame, a locking rod is arranged on the positioning frame and comprises a guide section and a locking section, the cross section of the locking section is square, two opposite corners of the locking section are positioned in the limiting grooves, the outer wall of the guide section is further sleeved with a baffle, the guide section is sleeved with a return spring, and the return spring is positioned between the baffle and the positioning frame.

The invention has the beneficial effects that:

1. according to the invention, the auxiliary suction discs are arranged in the main suction disc, the shield is arranged outside the main suction disc, the seal cavity is formed between the shield and the outer wall of the main suction disc, and the exhaust structure of the auxiliary suction disc is communicated with the seal cavity, so that the main suction disc and the auxiliary suction disc are independently provided with the negative pressure structures, the main suction disc and the auxiliary suction disc are mutually independent, and the stability in the traction process is ensured. The orientation angle of the auxiliary suction disc arranged in the main suction disc can be adjusted, the auxiliary suction disc can be adapted to different parts of a fetal head in the process of contacting the fetal head, the adsorption on different parts of the new head can be well guaranteed, the auxiliary suction disc has the trend of moving towards the direction deviating from the sealing cavity, the moving force of the auxiliary suction disc towards the direction close to the new head can be guaranteed all the time, and the auxiliary suction disc can be kept to be adsorbed with the new head. The contact area between the auxiliary suction discs and the tire head can be increased by arranging the auxiliary suction discs; the space in the main suction disc is large, if the edge of the main suction disc sucks and raises head only by means of the negative pressure in the main suction disc, the head raising discomfort can be caused if the negative pressure is too large, and the auxiliary suction disc is added to improve the stability of head raising adsorption under the condition of certain negative pressure as a whole.

2. Through setting up the connection ball, connect the ball and keep and main leakproofness between the suction disc bottom plate at the pivoted in-process, the pipe runs through the connection ball, and then realizes that the pipe is followed to be connected with together pivoted in-process, guarantees the leakproofness of the relative main suction disc of pipe.

3. The connecting ball is sleeved with the lining, and the lining plays a role in positioning the connecting ball. Through setting up the locating hole, the spacing section of locating hole plays the spacing effect of support to connecting the ball, and the internal diameter of the locating section of locating hole is greater than the diameter of connecting the ball, conveniently will connect the ball and install in the bush. And the connection ball can rotate around the center of the connection ball through the mutual matching of the limiting hole and the limiting section in the limiting plate. And guarantee the leakproofness through the first sealed pad that sets up and the sealed pad of second, avoid the sealed chamber to attract the space intercommunication in the dish with the owner, cause the condition of pressure release.

4. Through setting up compression spring and limiting plate, make vice attraction dish remain throughout under compression spring's effect to the trend that is close to the direction removal of raising one's head, can also play the effect of wearing the buffering through compression spring simultaneously, guarantee vice attraction dish and the soft nature of fetal head contact in-process and the stability at the traction in-process. Through setting up the sealing washer, guarantee its leakproofness when making the pipe remove in connecting the ball, through setting up the baffle, carry on spacingly to the biggest stroke of removal of pipe.

5. A guide cavity is formed between the outer pipe and the inner pipe, the inner pipe is communicated with the main suction disc, and the outer pipe is communicated with the auxiliary suction disc through a sealing cavity; a gap is arranged between the inner tube and the negative pressure tube, namely, the sealing block is positioned in the inner tube in the process that the piston moves outwards, and in the process of forming negative pressure, air in the auxiliary suction disc is firstly extracted through the guide cavity, so that negative pressure is formed between the auxiliary suction disc and the tire head; in the process of continuous movement of the piston, the sealing block moves out of the inner tube, the inner tube is communicated with the negative pressure tube at the moment, and then air in the main suction disc is extracted to enable the main suction disc to form negative pressure. The negative pressure is formed in the process of forming the negative pressure, namely, the auxiliary suction disc is firstly adsorbed on the fetal head, and then the negative pressure is formed in the main suction disc, so that the adsorption and traction effects of the auxiliary suction disc on the head-up are ensured.

6. Through setting up the locating lever, the locating lever has the trend that removes to the spacing groove all the time under reset spring's effect, and the front end cross-sectional shape of locating lever is the square, and when the front end of locating lever entered into the locking inslot, two angles of square were located the spacing inslot and are accomplished the locking promptly. By arranging the limiting grooves, the distance between adjacent limiting grooves can be reduced, the locking precision is improved, and the piston can move to a plurality of positions to realize locking; when the unlocking is needed, the locking section of the locking rod is separated from the locking groove by compressing the reset spring, so that the unlocking device is simple in result, high in reliability and convenient for an operator to use.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 3 is an enlarged view of the structure at B in FIG. 2;

FIG. 4 is a schematic view of a locking slot of the push rod;

in the attached figure, 1-a main suction disc, 2-a shield, 201-a sealing cavity, 3-an auxiliary suction disc, 301-a guide pipe, 302-a compression spring, 303-a limiting plate, 4-a negative pressure device, 401-an outer pipe, 402-an inner pipe, 403-a negative pressure pipe, 5-a lining, 6-a connecting ball, 7-a limiting plate, 701-a fixing screw, 8-a positioning hole, 801-a positioning section, 802-a limiting section, 9-a first sealing gasket, 10-a second sealing gasket, 11-a sealing ring, 12-a sealing block, 13-a positioning rod, 14-a piston, 15-a push rod, 16-a positioning frame, 17-a reset spring, 18-a baffle, 19-a guiding section, 20-a locking section, 21-a locking groove and 22-a limiting groove.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.

Example 1

The obstetric and gynecologic delivery device comprises a main suction disc 1, wherein the main suction disc 1 is connected with a negative pressure device 4, the outer wall of the main suction disc 1 is provided with a shield 2, a sealed cavity 201 is formed between the inner wall of the shield 2 and the outer wall of the main suction disc 1, the sealed cavity 201 is communicated with the negative pressure device 4, the main suction disc 1 is provided with a plurality of auxiliary suction discs 3 in a penetrating manner, the auxiliary suction discs 3 are communicated with the sealed cavity 201, the orientation angles of the auxiliary suction discs 3 in the main suction disc 1 are adjustable, and the auxiliary suction discs 3 have the tendency of moving in the direction away from the sealed cavity 201.

After the technical scheme is adopted: according to the invention, the auxiliary suction discs 3 are arranged in the main suction disc 1, the shield 2 is arranged outside the main suction disc 1, the sealed cavity 201 is formed between the shield 2 and the outer wall of the main suction disc 1, and the exhaust structure of the auxiliary suction disc 3 is communicated with the sealed cavity 201, so that the main suction disc 1 and the auxiliary suction disc 3 independently have negative pressure structures, are independent from each other and ensure the stability in the traction process. The orientation angle of the auxiliary suction disc 3 arranged in the main suction disc 1 can be adjusted, the auxiliary suction disc 3 can be adapted to different parts of a fetal head in the process of contacting the fetal head, the adsorption on different parts of the new head can be well guaranteed, the auxiliary suction disc 3 has the tendency of moving in the direction away from the sealing cavity 201, the auxiliary suction disc 3 can be guaranteed to move towards the direction close to the new head all the time, and the auxiliary suction disc 3 can be guaranteed to be adsorbed with the new head. The contact area with the tire head can be increased by arranging a plurality of auxiliary suction discs 3; the space in the main suction disc 1 is large, if the edge of the main suction disc 1 sucks and raises the head only by the negative pressure in the main suction disc 1, the discomfort of raising the head can be caused if the negative pressure is too large, and the stability of head raising adsorption is improved by adding the auxiliary suction disc 3 as a whole under the condition of certain negative pressure.

Example 2

The present embodiment is further optimized on the basis of embodiment 1 as follows: a plurality of through-hole has been seted up to the negative dish of main absorption, is provided with in the through-hole and connects ball 6, and the quantity and the through-hole one-to-one of vice suction disc 3 are connected with pipe 301, and pipe 301 runs through and connects ball 6 to with the space in the vice suction disc 3 and sealed chamber 201 intercommunication each other.

After the technical scheme is adopted: through setting up connecting ball 6, connecting ball 6 keeps and main leakproofness between the attraction dish 1 bottom plate at the pivoted in-process, and pipe 301 runs through connecting ball 6, and then realizes that pipe 301 follows to be connected with together pivoted in-process, guarantees the leakproofness of pipe 301 relative main attraction dish 1.

Example 3

The present embodiment is further optimized on the basis of embodiment 1 as follows: the inner wall of through-hole is provided with bush 5, bush 5 runs through along thickness direction and has seted up locating hole 8, locating hole 8 includes location section 801 and spacing section 802, the internal diameter of location section 801 is greater than the diameter of connecting ball 6, spacing section 802 is located the one end of being close to sealed chamber 201, the internal diameter of spacing section 802 reduces along the direction of being close to sealed chamber 201 gradually, the biggest internal diameter of spacing section 802 is less than the diameter of connecting ball 6, location section 801 outside is provided with and is used for connecting the spacing subassembly of ball 6. Spacing subassembly includes limiting plate 303 and set screw 701, and spacing hole has been seted up to limiting plate 303, the inner wall in spacing hole be with the cambered surface of connecting ball 6 mutual adaptation, limiting plate 303 passes through set screw 701 interconnect with bush 5. The inner wall of the spacing section 802 is provided with a first sealing gasket 9, and the inner wall of the spacing hole is provided with a second sealing gasket 10.

After the technical scheme is adopted: the connecting ball 6 is sleeved with a bush 5, and the bush 5 plays a role in positioning the connecting ball 6. Through setting up locating hole 8, the spacing section 802 of locating hole 8 plays the spacing effect of support to connecting ball 6, and the internal diameter of the location section 801 of locating hole 8 is greater than the diameter of connecting ball 6, and the convenience will be connected ball 6 and install in the bush 5. And the connection ball 6 can rotate around the center of the connection ball through the mutual matching of the limiting hole in the limiting plate 303 and the limiting section 802. And guarantee the leakproofness through the first sealed pad 9 that sets up and the sealed 10 of second, avoid sealed chamber 201 and the interior space intercommunication of main attraction dish 1, cause the condition of pressure release.

Example 4

The present embodiment is further optimized on the basis of embodiment 1 as follows: the connecting ball 6 is provided with a fixing hole for the conduit 301 to pass through, and a sealing ring 11 is arranged between the outer wall of the conduit 301 and the inner wall of the fixing hole. A compression spring 302 is sleeved outside the guide pipe 301, the compression spring 302 is positioned between the auxiliary suction disc 3 and the limiting plate 303, and the limiting plate 303 is arranged at one end of the guide pipe 301, which is positioned in the sealed cavity 201.

After the technical scheme is adopted: through setting up compression spring 302 and limiting plate 303, make vice attraction dish 3 keep the trend of removing to the direction that is close to the new line all the time under compression spring 302's effect, can also play the effect of wearing the buffering through compression spring 302 simultaneously, guarantee the softness of vice attraction dish 3 and fetal head contact in-process and the stability at the traction in-process. By providing the seal ring 11, the sealing performance of the guide pipe 301 is ensured when the guide pipe 301 moves in the connecting ball 6, and by providing the baffle plate 18, the maximum movement stroke of the guide pipe 301 is limited.

Example 5

The present embodiment is further optimized on the basis of embodiment 1 as follows: the negative pressure device 4 includes an inner tube 402, an outer tube 401, and a negative pressure tube 403; a piston 14 is arranged in the negative pressure pipe 403, one end of the piston 14 is connected with a push rod 15, the negative pressure pipe 403 is communicated with the outer pipe 401, the outer pipe 401 is sleeved outside the inner pipe 402, a connecting rod is arranged between the outer pipe 401 and the inner pipe 402, a guide cavity is formed between the inner wall of the outer pipe 401 and the outer wall of the inner pipe 402, one end of the outer pipe 401 is communicated with the sealed cavity 201, the other end of the outer pipe 401 is communicated with the negative pressure pipe 403, one end of the inner pipe 402 is communicated with the space in the main suction disc 1, and the other end of the inner pipe 402 is communicated with the guide cavity. A gap is formed between the inner tube 402 and the negative pressure tube 403, a positioning rod 13 is arranged at the front end of the piston 14, a sealing block 12 is connected to the front end of the positioning rod 13, the sealing block 12 is located in the inner cylinder, and the shape of the sealing block 12 is matched with the inner wall of the inner cylinder.

After the technical scheme is adopted: a guide cavity is formed between the outer pipe 401 and the inner pipe 402, the inner pipe 402 is communicated with the main suction disc 1, and the outer pipe 401 is communicated with the auxiliary suction disc 3 through the sealing cavity 201; a gap is further arranged between the inner tube 402 and the negative pressure tube 403, namely, in the process that the piston 14 moves outwards, the sealing block 12 is positioned in the inner tube 402, in the process of forming negative pressure, air in the auxiliary suction disc 3 is firstly extracted through the guide cavity, and negative pressure is firstly formed between the auxiliary suction disc 3 and the tire head; while the piston 14 is continuously moving, the seal block 12 is moved out of the inner tube 402, and at this time, the inner tube 402 and the negative pressure tube 403 communicate with each other, and the air in the main suction tray 1 is sucked to make the main suction tray 1 form a negative pressure. In the process of forming the negative pressure, a sequence is provided, namely after the auxiliary suction disc 3 is firstly adsorbed on the fetal head, the negative pressure is formed in the main suction disc 1, and the adsorption and traction effects of the auxiliary suction disc 3 on the head-up are ensured.

Example 6

The present embodiment is further optimized on the basis of embodiment 1 as follows: locking groove 21 has been seted up along the axial to the outer wall of push rod 15, a plurality of spacing groove 22 has been seted up to the lateral wall in locking groove 21, the outer wall of negative pressure pipe 403 is provided with locating rack 16, be provided with the check lock lever on the locating rack 16, the check lock lever includes direction section 19 and locking section 20, the cross sectional shape of locking section 20 is the square, two angles that locking section 20 is relative are located spacing groove 22, 19 outer walls of direction section still overlap and are equipped with

baffle

18, 19 covers of direction section are equipped with reset spring 17, reset spring 17 is located between baffle 18 and the locating rack 16.

After the technical scheme is adopted: through setting up locating lever 13, locating lever 13 has the trend of moving to spacing groove 22 all the time under reset spring 17's effect, and the front end cross-sectional shape of locating lever 13 is the square, and when the front end of locating lever 13 entered into locking groove 21, two angles of square were located spacing groove 22 and are accomplished the locking promptly. By arranging the limiting grooves 22, the distance between the adjacent limiting grooves 22 can be reduced, the locking precision is improved, and the piston 14 can move to a plurality of positions to realize locking; when the unlocking is needed, the locking section 20 of the locking rod is separated from the locking groove 21 by compressing the return spring 17, so that the unlocking device is simple in result, high in reliability and convenient for an operator to use.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims

1. The utility model provides a gynaecology and obstetrics's practise midwifery device, includes the main suction dish, the main suction dish is connected with negative pressure ware, its characterized in that: the outer wall of main attraction dish is provided with the guard shield, form sealed chamber between the inner wall of guard shield and the outer wall of main attraction dish, sealed chamber and negative pressure ware intercommunication, main attraction dish runs through and is provided with a plurality of vice attraction dishes, vice attraction dish communicates each other with sealed chamber, the orientation angularly adjustable of vice attraction dish in main attraction dish, vice attraction dish has the trend that moves to the direction that deviates from sealed chamber.

2. The obstetric apparatus for gynecology and obstetrics according to claim 1, wherein: the negative dish has been seted up a plurality of through-hole to the main, be provided with the connection ball in the through-hole, the quantity and the through-hole one-to-one of vice attraction dish, vice attraction dish is connected with the pipe, the pipe runs through the connection ball to with the space in the vice attraction dish and sealed chamber intercommunication each other.

3. The obstetric apparatus for gynecology and obstetrics according to claim 2, wherein: the inner wall of through-hole is provided with the bush, the bush has run through along thickness direction and has seted up the locating hole, the locating hole includes location section and spacing section, the internal diameter of location section is greater than the diameter of connecting the ball, spacing section is located the one end that is close to sealed chamber, the internal diameter of spacing section reduces along the direction that is close to sealed chamber gradually, the biggest internal diameter of spacing section is less than the diameter of connecting the ball, the location section outside is provided with and is used for connecting the spacing subassembly of ball spacing.

4. The obstetric apparatus for gynecology and obstetrics according to claim 3, wherein: the limiting assembly comprises a limiting plate and a fixing screw, the limiting plate is provided with a limiting hole, the inner wall of the limiting hole is a cambered surface matched with the connecting ball, and the limiting plate is connected with the bushing through the fixing screw.

5. The obstetric apparatus for gynecology and obstetrics according to claim 4, wherein: the inner wall of spacing section is provided with first sealed the pad, the inner wall in spacing hole is provided with the sealed pad of second.

6. The obstetric apparatus for gynecology and obstetrics according to claim 2, wherein: the connecting ball runs through and is provided with the fixed orifices that are convenient for the pipe to pass through, be provided with the sealing washer between the outer wall of pipe and the inner wall of fixed orifices.

7. The obstetric apparatus for gynecology and obstetrics according to claim 2, wherein: and a compression spring is further sleeved outside the conduit and positioned between the auxiliary suction disc and the limiting plate, and the limiting plate is arranged at one end of the conduit, which is positioned in the sealing cavity.

8. The obstetric apparatus for gynecology and obstetrics according to claim 1, wherein: the negative pressure device comprises an inner tube, an outer tube and a negative pressure tube; the negative pressure pipe is internally provided with a piston, one end of the piston is connected with a push rod, the negative pressure pipe is communicated with the outer pipe, the outer pipe is sleeved outside the inner pipe, a connecting rod is arranged between the outer pipe and the inner pipe, a guide cavity is formed between the inner wall of the outer pipe and the outer wall of the inner pipe, one end of the outer pipe is communicated with the sealing cavity, the other end of the outer pipe is communicated with the negative pressure pipe, one end of the inner pipe is communicated with the space in the main suction disc, and the other end of the inner pipe is communicated with the guide cavity.

9. The obstetric apparatus for gynecology and obstetrics according to claim 8, wherein: a gap is formed between the inner tube and the negative pressure tube, a positioning rod is arranged at the front end of the piston, a sealing block is connected to the front end of the positioning rod and located inside the inner tube, and the shape of the sealing block is matched with the inner wall of the inner tube.

10. The obstetric apparatus for gynecology and obstetrics according to claim 8, wherein: the utility model discloses a negative pressure pipe, including the push rod, locking groove, locking section, reset spring, locating rack, locking lever, guide section cover, reset spring, locking groove, a plurality of spacing groove has been seted up along the axial to the outer wall of push rod, the lateral wall in locking groove has been seted up, the outer wall of negative pressure pipe is provided with the locating rack, be provided with the check lock lever on the locating rack, the check lock lever includes guide section and locking section, the cross sectional shape of locking section is the square, two angles that the locking section is relative are located the spacing inslot, guide section outer wall still overlaps and is equipped with the baffle, the guide section cover is equipped with reset spring, reset spring is located between baffle and the locating rack.