CN113520552B - Amnion membrane rupture device suitable for gynaecology and obstetrics - Google Patents

Abstract

The invention provides an amniotic membrane rupture device with high safety suitable for obstetrics and gynecology department, relates to the technical field of medical instruments, and solves the problems that safe limiting can not be realized due to the extension distance of a tool bit, if the extension distance is too long, a baby can be easily cut, and limiting can not be realized after the conventional device is inserted into a pudendum, if the conventional device is carelessly collided in operation, the baby can be easily bruised. An amnion membrane rupturing device with high safety suitable for obstetrics and gynecology department comprises a cylinder body; the film breaking mechanism is connected in the barrel in a sliding mode, the drainage structure is arranged in the barrel, and the blocking seat is further arranged on the barrel. Because the cutter head seat is provided with the mixing holes in an annular array shape, the mixing holes are in a conical hole structure, and the mixing holes are in a vortex shape when the push rod is pushed up and down, the vortex formed at the mixing holes can be used for impact cleaning of blockages at the cutter head holes.

Description

A kind of amniotic membrane breaker suitable for obstetrics and gynecology

technical field

The invention belongs to the technical field of medical instruments, and more specifically relates to an amniotic membrane breaker suitable for obstetrics and gynecology.

Background technique

At present, in clinical obstetrics, it is sometimes necessary to use artificial rupture of membranes to assist production.

For example, the application number: CN201810207584.8, the present invention discloses an obstetric amniotic membrane rupturer with cleaning function, which includes a circular outer tube with a closed lower end, a cylindrical knife holder that can slide along the inner wall of the outer tube, and The push tube connected to the bottom surface of the knife rest, and a plurality of bayonets installed on the circumference of the top surface of the knife rest, the said knife rest is provided with a circular groove with an opening on the top surface, and said circular groove is built with compressed sponge balls, said The lower end of the compressed sponge ball is connected with a push rod, and the top of the outer tube is provided with a pudendal expansion ring, and the end surface of the pudendal expansion ring is provided with a liquid spray hole, and the wall of the push tube is provided with a liquid inlet channel and drain channel. Similar to the amniotic membrane rupture device of the above-mentioned application, there are still the following deficiencies at present:

One is that the safety of the existing device is low when the amniotic membrane is ruptured, which is specifically reflected in the fact that the extension distance of the cutter head cannot realize a safe limit, and if the extension is too long, it is easy to cut the baby, and the existing device is inserted. It is not possible to limit the position behind the genitals, and if it accidentally collides during operation, it may easily cause injury to the baby; moreover, the existing device has weak protection ability, and if it is accidentally dropped, it may easily cause damage to the cutter head; finally, the existing device It is easy to cause blockage during the liquid discharge process, and its own structure cannot realize the cleaning of the blockage.

Therefore, in view of this, the existing structure and defects are studied and improved, and an amniotic membrane rupture device suitable for obstetrics and gynecology is provided, in order to achieve the purpose of having more practical value.

Contents of the invention

In order to solve the above-mentioned technical problems, the present invention provides an amniotic membrane rupture device suitable for obstetrics and gynecology to solve the problem that the existing device is less safe when the amniotic membrane is ruptured, which is specifically reflected in: the knife head extends The distance cannot be safely limited. If it is too long, it will easily cut the baby, and the existing device cannot be limited after being inserted into the genitals. If it accidentally collides during operation, it will easily cause the baby to be injured; Firstly, if the protective latex of the existing device is accidentally dropped, it will easily cause damage to the cutter head; finally, the existing device is prone to clogging during the drainage process, and its own structure cannot solve the problem of cleaning the clogged place.

The purpose and effect of a kind of amniotomy device suitable for obstetrics and gynecology of the present invention are achieved by the following specific technical means:

According to the present invention, there is provided an amniotic membrane breaker suitable for obstetrics and gynecology, which includes a cylinder body and a membrane rupture mechanism. There is a stopper; the cylinder includes a genital expansion ring and a limit ring A, a genital expansion ring is sleeved on the outer peripheral wall of the front end of the cylinder, and a limit ring A is provided on the inner peripheral wall of the front end of the cylinder, It is used to limit the extension distance of the rupture mechanism.

Preferably, the cylinder is also provided with a limit ring B, and a limit ring B is welded to the inner wall of the cylinder; the membrane rupture mechanism includes a cutter head seat, a cutter head, a push rod, a retaining ring and an elastic member. The cutter head seat is a cylindrical structure, and the cutter head seat can be slidably connected in the cylinder body, and the cutter head seat is equipped with cutter heads in a circular array; the push rod is welded on the bottom end surface of the cutter head seat, and the push rod The stop ring is welded, and the push rod is sleeved with an elastic piece; the head end of the elastic piece is in contact with the bottom surface of the limit ring B, and the tail end of the elastic piece is in contact with the top surface of the stop ring, and the elastic piece forms the tool head seat And the elastic reset structure of the cutter head, so that the cutter head seat and the cutter head are hidden in the non-use state.

Preferably, the cutter head seat is provided with mixing holes, and the cutter head seat is provided with mixing holes in an annular array, and the mixing holes are in the shape of tapered holes.

Preferably, the drainage structure includes multiple groups of drainage channels, each group of drainage channels includes a head hole, a connecting hole and a tail hole, and the head hole, connecting hole and tail hole are connected in sequence, and a plurality of the drainage channels are arranged in a ring and opened in the cylinder on the wall of the body.

Preferably, there are two drainage channels, and each head-end drainage channel includes two head holes; both head holes communicate with corresponding connection holes.

Preferably, both the head hole and the tail hole are obliquely opened on the barrel.

Preferably, the cylinder also includes a drainage tube and threads, the outer peripheral wall of the cylinder is provided with threads, and a drainage tube communicating with the inner cavity of the cylinder is welded on the outer wall of the rear end of the cylinder, and the drainage tube constitutes Auxiliary drainage structure.

Preferably, the inner wall of the retaining seat is provided with a threaded groove, and the retaining seat is threadedly connected with the thread, and the retaining seat constitutes an adjustable insertion depth limiting structure of the cylinder.

Preferably, the head end of the blocking seat is chamfered, and the blocking seat has a stepped seat-like structure; the height of the blocking seat is greater than the height of the thread, and the blocking seat constitutes a thread protection structure.

Compared with the prior art, the present invention has the following beneficial effects:

Through the coordinated setting of the cylinder body and the membrane breaking mechanism, the cutting at a safe distance can be realized, and the self-protection of the cutter head can be realized when it is accidentally dropped, and the impact cleaning of the blockage at the head hole can also be realized, as follows: First, a genital expansion ring is sleeved on the upper part of the outer wall of the cylinder, and a limit ring A is welded on the upper part of the inner wall of the cylinder, and when the cutter head seat contacts the bottom end surface of the limit ring A, the cutter head is exposed Length, so as to prevent the cutting head from being exposed too long to cut the baby; second, because the head seat is a cylindrical structure, and the head seat is slidably connected in the cylinder, and the head is installed in a circular array on the head seat ; The push rod is welded on the bottom end surface of the cutter head seat, and a stop ring is welded on the push rod, and an elastic piece is sleeved on the outer wall of the push rod; the head end of the elastic piece is in contact with the bottom end surface of the limit ring B, and the tail end of the elastic piece is in contact with The top surface of the retaining ring is in contact, and the elastic member constitutes the elastic reset structure of the cutter head seat and the cutter head, so that the cutter head seat and the cutter head are hidden in the non-use state, so as to avoid the accidental drop of the device and the damage to the cutter head. Thirdly, because there are mixing holes in a circular array on the cutter head seat, and the mixing holes are conical hole-like structures, and when the push rod is pushed up and down, the mixing holes are in a vortex shape, so that the mixture formed at the mixing holes The vortex can clean the blockage at the head hole by impact.

The drainage structure is improved. First, because the head holes are connected to the inner wall of the cylinder, there are two sets of them, and the two sets of head holes are connected to the connection holes, and the two sets of head holes together form a drainage and anti-clogging structure , so that compared with the head hole, the anti-clogging ability is stronger; second, because the head hole and the tail hole are laid on the cylinder body in an inclined shape, the smoothness of the liquid circulation in the drainage structure is improved, and further improved Anti-clogging ability of the drainage structure when draining.

Through the setting of the stopper seat, firstly, because the stopper seat is a tubular seat structure, and the inner wall of the stopper seat is provided with a thread groove, and the stopper seat is connected with the screw thread, and the stopper seat constitutes the adjustable limit structure of the insertion depth of the cylinder , so as to realize the limit of the insertion depth, and prevent tissue damage caused by excessive insertion depth due to mistakes in work; second, because the height of the stopper seat is greater than the height of the thread, and the stopper seat forms a protective structure for the thread, thus avoiding the thread The contact with the inner wall of the uterus reduces the comfort, and the stopper with a chamfered head is more smooth during insertion.

Description of drawings

Fig. 1 is a front view structural diagram of Embodiment 1 of the present invention.

Fig. 2 is a partial cross-sectional structural schematic diagram of Embodiment 1 of the present invention.

Fig. 3 is a schematic cross-sectional structure diagram of Embodiment 1 of the present invention.

FIG. 4 is a schematic diagram of the enlarged structure at A in FIG. 3 of the present invention.

FIG. 5 is a schematic diagram of the enlarged structure at B in FIG. 3 of the present invention.

FIG. 6 is a schematic diagram of an enlarged structure at point C in FIG. 3 of the present invention.

Fig. 7 is a schematic structural diagram of the present invention when Fig. 3 is used.

FIG. 8 is a schematic diagram of an enlarged structure at D in FIG. 7 of the present invention.

Fig. 9 is a schematic structural view of Embodiment 2 of the present invention (this figure shows a cross-sectional view staggered by 30° in the circumferential direction from the cross-sectional cross-section in Fig. 3 ).

In the figure, the corresponding relationship between component names and drawing numbers is:

1. Cylinder body; 111. First conventional section; 112. Second conventional section; 12. Ventilation section; 13. Adsorption channel; 100. Adsorption chamber; , limit ring B; 104, drainage tube; 105, thread; 2, membrane breaking mechanism; 21 adsorption piston; 203, push rod; 204, stop ring; 205, elastic member; 3, drainage structure; 301, head hole; 302, connection hole; 303, tail hole; 4, stop seat; 5, flexible layer.

detailed description

Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but should not be used to limit the scope of the present invention.

In the description of the present invention, unless otherwise stated, the meaning of "plurality" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer" , "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation should therefore not be construed as limiting the invention. In addition, the terms "first", "second", "third", etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral Ground connection; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

Embodiment one:

As shown in accompanying drawing 1 to accompanying drawing 8:

The present invention provides an amniotic membrane breaker suitable for obstetrics and gynecology, comprising a cylinder body 1 and a membrane rupture mechanism 2, the cylinder body 1 is slidably connected with the membrane rupture mechanism 2, and the cylinder body 1 is provided with a drainage structure 3, and The barrel 1 is also provided with a retaining seat 4; referring to Fig. 7 and Fig. 8, a genital expansion ring 101 is sleeved on the outer peripheral wall of the front end (i.e. the insertion end) of the barrel 1, and the front end of the barrel 1 (i.e. A limit ring A102 is provided on the inner peripheral wall of the insertion end), and the cutter head 202 is exposed to a preset length when the cutter head seat 201 contacts the bottom surface of the limit ring A102, and the preset length is 0.15-0.25cm, such as 0.2cm , so as to prevent the cutter head 202 from being exposed too long and causing cuts on the baby; referring to Figure 3 and Figure 5, the cutter head seat 201 includes a mixing hole 20101, and the cutter head seat 201 is provided with a through mixing hole 20101 in an annular array, and The mixing hole 20101 is a tapered hole structure, and when the push rod 203 is pushed up and down, the mixing hole 20101 is in the shape of a vortex, so that the vortex formed at the mixing hole 20101 can clean the blockage in the head hole 301 in an impact manner.

Referring to Figure 3, cylinder 1 is also provided with a limit ring B103, and a limit ring B103 is welded to the inner wall of cylinder 1; membrane rupture mechanism 2 includes cutter head seat 201, cutter head 202, push rod 203, retaining ring 204 and elastic 205, the cutter head seat 201 is a cylindrical structure, and the cutter head seat 201 is slidably connected in the cylinder body 1, and the cutter head seat 201 is equipped with cutter heads 202 in an annular array; the push rod 203 is welded on the cutter head seat The bottom end surface of 201, that is, the push rod 203 and the cutter head 202 are arranged on the opposite two surfaces of the cutter head seat 201, and the push rod 203 is welded with a stop ring 204, and the stop ring 204 is located at the limit ring B103 relative to the cutter head seat 201 the other side of the push rod 203, and the outer wall of the push rod 203 is sleeved with an elastic piece 205, the elastic piece 205 can specifically be a columnar spring; The top surface of 204 is in contact, and the elastic member 205 forms the elastic reset structure of the cutter head seat 201 and the cutter head 202, so that the cutter head seat 201 and the cutter head 202 are in a hidden state in the non-use state, thereby avoiding the accidental Dropping results in damage to the cutter head 202 . A handle is also provided on the push rod 203 , the handle is located outside the cylinder body 1 , and the handle and the cutter head seat 201 are oppositely arranged at both ends of the rod body of the push rod 203 . Referring to Fig. 3, the drainage structure 3 includes multiple groups of drainage channels, each group of drainage channels includes a head hole 301, a connecting hole 302 and a tail hole 303, and the head hole 301, the connecting hole 302 and the tail hole 303 are connected in sequence, and a plurality of drainage channels The channels are arranged in a ring on the wall of the cylinder 1 .

Referring to Figure 3 and Figure 4, there are two drainage channels, and each drainage channel includes a head hole 301; the two head holes 301 communicate with the corresponding connection holes 302, and the four head holes 301 are in common A liquid drainage anti-clogging structure is formed, so that the anti-clogging ability is stronger compared with the single head hole 301. The head hole 301 is set close to the limit ring A102, located between the limit ring B103 and the limit ring A102, and communicates with the chamber between the limit ring B103 and the limit ring A102. The head hole 3 is used to introduce amniotic fluid, etc. In the drainage channel, the connecting hole 302 is arranged parallel to the axis of the cylinder body 1 , and the tail hole 303 passes through the cylinder body 1 for draining the introduced amniotic fluid and other fluids.

When the tool bit holder 201 is pulled out to abut against the limiting ring B103, the head hole 301 is exposed and opened, and the head hole 301 communicates with the chamber between the tool bit holder 201 and the limiting ring A102.

Referring to Fig. 3 and Fig. 4, the head hole 301 and the tail hole 303 are arranged on the cylinder 1 in an inclined shape, and the inclination angle is 60 degrees, thereby improving the smoothness of liquid circulation in the drainage structure 3, and further improving The anti-clogging ability of the drainage structure 3 when draining is guaranteed.

Referring to Figure 3, the cylinder 1 also includes a drainage tube 104 and a thread 105, the cylinder 1 is provided with a thread 105, and a drainage tube 104 communicating with the inner cavity of the cylinder 1 is welded on the outer wall of the rear end of the cylinder 1, and The drainage tube 104 constitutes an auxiliary drainage structure.

Referring to Fig. 3 and Fig. 6, the inner wall of the retaining seat 4 is provided with a threaded groove, and the retaining seat 4 is threadedly connected with the thread 105, and the retaining seat 4 constitutes the insertion depth adjustable limit structure of the cylinder body 1, thereby realizing the insertion The depth limit prevents tissue damage caused by excessive insertion depth due to mistakes in work.

Referring to Fig. 3, the head end of the retaining seat 4 is chamfered, and the retaining seat 4 is a stepped seat-like structure; the height of the retaining seat 4 is greater than the height of the thread 105, and the retaining seat 4 forms the protective structure of the thread 105, thereby avoiding The contact between the thread 105 and the inner wall of the uterus reduces the comfort, and the chamfered stopper 4 at the head end is more smooth when inserted.

The specific usage and function of this embodiment:

When in use, the cylinder 1 is inserted from the vagina, and then the membrane breaking mechanism 2 is rotated to break the membrane;

During use, first, a genital expansion ring 101 is sleeved on the outer peripheral wall of the front end (ie, the insertion end) of the cylinder body 1, and a limit ring A102 is welded to the inner peripheral wall of the front end (ie, the insertion end) of the cylinder body 1, and When the cutter head 201 is in contact with the bottom end surface of the stop ring A102, the exposed length of the cutter head 202 is 0.15-0.25cm, such as 0.2cm, so as to prevent the cutter head 202 from being exposed too long and causing the baby to be cut; 201 is a cylindrical structure, and the cutter head seat 201 is slidingly connected in the cylinder body 1, and the cutter head seat 201 is equipped with cutter heads 202 in an annular array; the push rod 203 is welded on the bottom end surface of the cutter head seat 201, and the push rod 203 is welded with a retaining ring 204, the retaining ring 204 is located on the other side of the limit ring B103 relative to the cutter head seat 201, and an elastic member 205 is sleeved on the outer wall of the push rod 203, and the elastic member 205 can be specifically a cylindrical spring; The head end of the part 205 is in contact with the bottom surface of the limit ring B103, and the tail end of the elastic part 205 is in contact with the top surface of the retaining ring 204, and the elastic part 205 forms the elastic return structure of the cutter head seat 201 and the cutter head 202, so that when not in use In this state, the cutter head seat 201 and the cutter head 202 are in a hidden state, so as to avoid the damage to the cutter head 202 caused by the accidental drop of the membrane breaker; There are two groups, and the two groups of head holes 301 are connected with the connection hole 302, and the two groups of head holes 301 together form a liquid drainage anti-clogging structure, so that the anti-blocking ability is stronger than that of the head holes 301; the fourth , because the head hole 301 and the tail hole 303 are laid on the cylinder body 1 in an inclined shape, and the inclination angle is 60 degrees, thereby improving the smoothness of liquid circulation in the drainage structure 3, and further improving the drainage of the drainage structure 3 Anti-clogging ability during; the 5th, be provided with mixing hole 20101 in circular array shape on the cutter head seat 201, and the mixing hole 20101 is a tapered hole-like structure, the small end of mixing hole 20101 is provided with knife toward cutter head seat 201 On the surface of the head 202, the big end faces the cutter head seat 201 away from the surface of the cutter head 202, and when the push rod 203 is pushed up and down, the mixing hole 20101 is in a vortex shape, so that the vortex formed at the mixing hole 20101 can be aligned with the head hole 301 The impact cleaning of blockages; Sixth, because the retaining seat 4 is a tubular seat structure, and the inner wall of the retaining seat 4 is provided with thread grooves, and the retaining seat 4 is threadedly connected with the thread 105, and the retaining seat 4 forms the cylinder body 1 The insertion depth adjustable limit structure realizes the limit of the insertion depth and prevents tissue damage caused by excessive insertion depth caused by mistakes in work; The protective structure of the thread 105 is formed, thereby avoiding the reduction of the comfort caused by the contact between the thread 105 and the inner wall of the uterus, and the stopper 4 whose head end is chamfered is more smooth when inserted.

Embodiment two:

In this embodiment, the difference from embodiment 1 is:

As shown in Figure 9, which shows a cross-sectional view staggered by 30° in the circumferential direction from the cross-sectional section in Figure 3, the inner chamber of the cylinder body 1 includes a conventional section and a ventilation section 12, and the diameter of the ventilation section is larger than that of the conventional section of the cylinder body 1 The diameter of the conventional section is divided into two sections by the ventilation section, the two sections are respectively the first conventional section 111 and the second conventional section 112, wherein the first conventional section 111 is located at the front end of the membrane rupturer, that is, the insertion end part, limited Position ring A 102 and limit ring B 103 are located within first conventional segment 111 .

Ventilation section 12 is arranged close to limit ring B103, and is located on the side of limit ring B103 away from limit ring A102, that is, limit ring A102 and vent section 12 are relatively located on both sides of limit ring B103, and stop ring 204 can be positioned on the second side of limit ring B103. The normal section 112 and the ventilation section slide, the size of the stop ring 204 is larger than that in the first embodiment, and its diameter matches the regular section (specifically the second regular section), and the stop ring 204 can be opposite to the second regular section 112 (Specifically, the second conventional segment) slides, and the stop ring 204 can realize a sliding seal with the conventional segment, so that the stop ring 204 plays a role of sealing the piston. When the baffle ring 204 slides in the ventilation section, an annular ventilation gap is formed between the peripheral wall of the baffle ring 204 and the wall of the ventilation section, and the head hole 301 communicates with the first conventional section.

Further, an air guide part is provided on the outer circumference of the retaining ring 204 away from the insertion end of the membrane rupturer. The air guide part is chamfered, and the air guide part is used for the retaining ring 204 to quickly slide into the ventilation section to realize the first The two conventional sections 112 are in communication with the outside gas.

The width of the drainage channel head hole 301 along the axial direction of the barrel body 1 is greater than the thickness of the cutter head seat 201 . In this way, during the movement of the cutter head seat 201 , the gas flow between the outside and the ventilation section can be realized through the drainage channel, and pressure compensation can be realized, so that the push rod can move smoothly during the operation.

The mixing hole 20101 in this embodiment also has a flow-limiting effect, for details, refer to the subsequent description of the usage method.

The rupture mechanism 2 also includes an adsorption piston 21, which is slidably sleeved on the push rod 203. The adsorption piston 21 and the retaining ring 204 are arranged parallel to each other and at a preset distance. The adsorption piston 21 is located between the retaining ring 204 and the push rod 23. Between the handles, the end surface of the adsorption piston 21 away from the stop ring 204 is connected with a sleeve 22, the first end of the sleeve 22 is fixedly connected with the stop ring 204, the second end extends out of the cylinder 1, and is screwed on the cylinder 1, that is, screwed on the cylinder 1, the second end of the sleeve 22 is provided with a turning handle 23, the turning handle 23 is exposed from the cylinder 1, and the turning handle 23 is arranged closer to the cylinder 1 relative to the handle, A sealing ring is provided on the end surface of the adsorption piston 21 facing the retaining ring 204 , and the sealing ring is sleeved on the push rod 203 for realizing sliding sealing between the adsorption piston 21 and the push rod 203 .

When the cutter head seat 201 abuts against the limit ring B103, an adsorption chamber 100 is formed between the adsorption piston, the retaining ring 204 and the cylinder body 1, and an adsorption channel 13 is opened on the wall of the cylinder body 1, and the adsorption channel 13 There are four in total, and the four adsorption channels 13 are evenly distributed along the circumference of the cylinder 1, and the two adjacent adsorption channels 13 are spaced 60° apart from each other. The adsorption channels 13 communicate with the outside and the adsorption chamber 100, and the adsorption channels 13 One end is set on the end surface of the insertion end of the cylinder body 1, and the other end is set on the inner wall of the second conventional section 112 of the cylinder body 1, specifically on the inner wall of the cylinder body 1 corresponding to the adsorption chamber 100, so that the cylinder body 1 Communication between the insertion end and the adsorption chamber 100.

Further, a flexible layer 5 is provided on the front end of the cylinder body 1, that is, on the end surface of the insertion end. The flexible layer 5 can specifically be made of medical rubber material. The flexible layer is used for flexible contact with the amniotic membrane and realizes sealing and adsorption. In addition, the flexible layer is provided with openings at positions corresponding to the adsorption channels, and the openings are used to communicate with the adsorption channels. In this embodiment, in order for the cutter head 202 to extend out of the flexible layer smoothly, an adaptive increase is made compared to the cutter head 202 in the first embodiment.

For the description of other partial structures of the membrane rupturer in this embodiment, reference may be made to Embodiment 1, and details will not be repeated here.

Instructions:

When using the membrane breaker in this embodiment, refer to the following steps:

1. First, the push rod of the elastic member 205 is pulled out and abuts against the limit ring B103. At this time, the stop ring 204 is located in the second conventional section 112. First, insert the insertion end of the membrane rupturer into the vagina, and make the flexible layer 5 Closely attached to the amniotic membrane, and then the adsorption piston is rotated outward through the external rotation handle, and the space of the adsorption chamber increases, that is, the distance between the adsorption piston and the limit ring B103 increases, so that the vacuum degree of the adsorption chamber increases, thereby Make the amnion adsorb on the flexible layer through the adsorption channel;

2. Pull the cylinder 1 outward, so that the amniotic membrane and the baby have a certain isolation distance;

3. Push the retaining ring 204 forward quickly through the push rod, so that the retaining ring 204 enters the ventilation section from the second conventional section under the action of inertial force. At this time, a ventilation gap is formed between the outer peripheral wall of the retaining ring 204 and the wall of the ventilation section. During the process, the gas between the cutter head seat 201 and the amniotic membrane is divided into two paths, one path is discharged through the drainage channel, which is the main exhaust path, and the other path enters the ventilation section through the mixing hole 20101, and then enters the retaining ring 204 from the ventilation gap In the vacuum area between the suction piston and the adsorption piston, since the mixing hole 20101 has a flow-limiting effect, the flow rate of this path is small, and it only plays the role of pressure compensation, so that the cutter head seat 201 can continue to push forward without affecting the effect on the amniotic membrane. Adsorption;

4. When the cutter head seat 201 is quickly pushed forward to exceed the head hole 301 and hits the amniotic membrane quickly, the cutter head 202 on the cutter head seat 201 will rupture the amniotic membrane before the adsorption force on the amniotic membrane is released.

In this embodiment, the reasonable structural design of the amniotic membrane device enables the amniotic membrane to be absorbed and pulled out and kept at a certain distance from the baby in the amniotic membrane. Rupturing the amniotic membrane greatly improves the accuracy and efficiency of membrane rupture. On the other hand, when the amniotic membrane is ruptured, there is a certain distance between the amniotic membrane and the baby in the amniotic membrane, which can further prevent the baby from being stabbed and greatly improve the safety of the operation.

The embodiments of the present invention have been presented for purposes of illustration and description, but are not intended to be exhaustive or to limit the invention to the form disclosed. Many modifications and changes will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to better explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention and design various embodiments with various modifications as are suited to the particular use.

Claims (7)

1. An amniotic membrane rupture device suitable for obstetrics and gynecology, characterized in that it includes a cylinder (1) and a membrane rupture mechanism (2), and the cylinder (1) is slidably connected with a membrane rupture mechanism (2) , and the cylinder body (1) is provided with a drainage structure (3), and the cylinder body (1) is also provided with a stopper (4); Ring A (102), a genital expansion ring (101) is sleeved on the outer peripheral wall of the front end of the cylinder body (1), and a limit ring A (102) is provided on the inner peripheral wall of the front end of the cylinder body (1). To limit the extension distance of the rupture mechanism (2); The barrel (1) is also provided with a limit ring B (103), and the inner wall of the barrel (1) is welded with a limit ring B (103); the membrane rupture mechanism (2) includes a cutter head seat (201 ), a cutter head (202), a push rod (203), a retaining ring (204) and an elastic member (205), the cutter head seat (201) is a cylindrical structure, and the cutter head seat (201) is slidably connected to Inside the barrel (1), the cutter head (202) is installed in a circular array on the cutter head seat (201); the push rod (203) is welded on the bottom end surface of the cutter head seat (201), and the push rod (203 ) is welded with a retaining ring (204), and the push rod (203) is sleeved with an elastic piece (205); The tail end of (205) is in contact with the top surface of the retaining ring (204), and the elastic member (205) constitutes the elastic reset structure of the cutter head seat (201) and the cutter head (202), so that the cutter head seat ( 201) and the cutter head (202) are hidden; The cutter head seat (201) is provided with a mixing hole (20101), and the cutter head seat (201) is provided with a circular array of mixing holes (20101), and the mixing hole (20101) is a tapered hole structure; The inner cavity of the cylinder (1) includes a conventional section and a ventilation section (12). The diameter of the ventilation section is larger than that of the conventional section of the cylinder (1). The ventilation section divides the conventional section into two sections, which are respectively the first conventional section. segment (111) and the second conventional segment (112), wherein the first conventional segment (111) is located at the front end of the rupture device, that is, the insertion end part, the limit ring A (102) and the limit ring B (103) located within the first regular section (111); The ventilation section (12) is set close to the limit ring B (103), and is located on the side of the limit ring B (103) away from the limit ring A (102), that is, the limit ring A (102) and the ventilation section (12) Relatively located on both sides of the limit ring B (103), the stop ring (204) can slide in the second conventional section (112) and the ventilation section. The diameter of the stop ring (204) matches the second regular section. The stop ring (204) can slide relative to the second conventional segment (112), and the retaining ring (204) can realize the sliding seal with the conventional segment, so that the retaining ring (204) plays the role of sealing the piston, when the retaining ring (204) is in When sliding in the ventilation section, an annular ventilation gap is formed between the outer peripheral wall of the retaining ring (204) and the wall of the ventilation section, and the drainage structure (3) communicates with the first conventional section; The rupture mechanism (2) also includes an adsorption piston (21), which is slidably sleeved on the push rod (203), and the adsorption piston (21) and the retaining ring (204) are set parallel to each other and separated by a preset distance , the adsorption piston (21) is located between the stop ring (204) and the handle of the push rod (203), the end surface of the adsorption piston (21) away from the stop ring (204) is connected with a sleeve (22), the sleeve (22) Extend the cylinder (1) and screw it on the cylinder (1), the end of the sleeve (22) is provided with a handle (23), the handle (23) is exposed from the cylinder (1), and The rotary handle (23) is set closer to the cylinder (1) than the handle, and the end surface of the adsorption piston (21) facing the retaining ring (204) is provided with a sealing ring, which is sleeved on the push rod (203) to realize adsorption Sliding seal between piston (21) and push rod (203); When the cutter head seat (201) abuts against the limit ring B (103), an adsorption chamber (100) is formed between the adsorption piston, the retaining ring (204) and the cylinder (1), and the cylinder (1 ) is provided with adsorption channels (13) on the wall, and there are four adsorption channels (13) in total, and the four adsorption channels (13) are evenly distributed along the circumference of the cylinder (1), and the adsorption channels (13) communicate with the outside and In the adsorption chamber (100), one end of the adsorption channel (13) is opened on the end surface of the insertion end of the cylinder body (1), and the other end is opened on the inner wall of the second conventional section (112) of the cylinder body (1). On the inner wall of the cylinder (1) corresponding to the chamber (100). 2. An amniotic membrane breaker suitable for obstetrics and gynecology as claimed in claim 1, characterized in that the drainage structure (3) includes multiple sets of drainage channels, and each set of drainage channels includes a head hole (301), a connecting hole ( 302) and the tail hole (303), the head hole (301), the connection hole (302) and the tail hole (303) are connected in sequence, and a plurality of the drainage channels are arranged in a ring on the wall of the cylinder (1). 3. An amniotic membrane rupture device suitable for obstetrics and gynecology as claimed in claim 2, wherein there are two drainage channels, and each head drainage channel includes two head holes (301); the two head holes (301) communicate with the corresponding connection holes (302). 4. An amniotic membrane rupture device suitable for obstetrics and gynecology as claimed in claim 2, characterized in that: the head hole (301) and the tail hole (303) are both obliquely opened on the cylinder (1) . 5. An amniotic membrane rupture device suitable for obstetrics and gynecology according to claim 1, characterized in that: the cylinder (1) also includes a drainage tube (104) and a thread (105), the cylinder ( 1) The outer peripheral wall is provided with threads (105), and a drainage tube (104) communicating with the inner cavity of the cylinder (1) is welded on the outer wall of the rear end of the cylinder (1), and the drainage tube (104) constitutes Auxiliary drainage structure. 6. An amniotic membrane rupturer suitable for obstetrics and gynecology as claimed in claim 5, characterized in that: the inner wall of the stopper (4) is provided with a threaded groove, and the stopper (4) is threaded with the thread (105) type connection, and the stopper (4) constitutes the insertion depth adjustable limit structure of the cylinder (1). 7. An amniotic membrane rupture device suitable for obstetrics and gynecology according to claim 1, characterized in that: the head end of the stopper (4) is chamfered, and the stopper (4) is a stepped seat structure ; The height of the retaining seat (4) is greater than the height of the thread (105), and the retaining seat (4) forms a protective structure for the thread (105).

Images