WO2023155534A1

WO2023155534A1 - Intrauterine diaphragm placement device

Info

Publication number: WO2023155534A1
Application number: PCT/CN2022/135038
Authority: WO
Inventors: 夏佩佩; 谢建
Original assignee: 易浦润（上海）生物技术有限公司
Priority date: 2022-02-15
Filing date: 2022-11-29
Publication date: 2023-08-24
Also published as: CN217186703U

Abstract

Provided is an intrauterine diaphragm placement device (100), comprising: a handle (10), the distal end of the handle (10) being provided with a first through hole (11); a catheter (20), the proximal end of the catheter (20) extending into the first through hole (11) and being fixedly connected to the handle (10); a pushing assembly (30), the pushing assembly (30) being arranged on the handle (10) and being movable along the handle (10); and an inner push rod (60), the inner push rod (60) being arranged in the catheter (20). The pushing assembly (30) pushes the inner push rod (60) to move between a retracted position and an unfolded position, and the distal end of the inner push rod (60) is provided with a clamping jaw (61) for mounting a diaphragm (200). When the inner push rod (60) is located at the retracted position, the clamping jaw (61) is at least partially accommodated in the catheter (20), and when the inner push rod (60) is located at the unfolded position, the clamping jaw (61) is located on the outer side of the catheter (20) and is unfolded.

Description

Endometrial patch placement device

technical field

The present disclosure relates to the technical field of medical devices, in particular to an endometrial patch placement device.

Background technique

At present, clinical intrauterine placement devices are mostly used to place IUDs. IUDs are contraceptive devices placed in the female uterine cavity. They are reversible and long-acting contraceptive devices.

The IUD comes with a universal or dedicated placement device. There are various placement devices, the simplest being metal instruments such as ring pliers. This kind of pliers is easy to use, and it can directly pick up the product and put it into the uterus, which is highly acceptable to the patients. However, metal instruments are generally reused and need to be sterilized repeatedly, which increases the risk of use by the operator. At the same time, the depth of insertion of this type of forceps into the fundus muscle layer of the uterus depends entirely on the operator's feeling and experience, and lacks effective indicators and signs. Control methods are likely to cause problems such as uterine perforation, and the IUD is not firmly fixed and not in place.

In related technologies, disposable products are often used, such as the clamping type of inner and outer tubes and the hook-and-pull type, which have a good effect on the placement of metal spring coil type IUDs. For another example, the higher-end products use the silk thread at the end to make the product enter the catheter, and the catheter and the inner push rod cooperate to push the product into the uterine cavity. These placement methods all have better effects corresponding to specific products. However, if the product to be transported is a relatively soft diaphragm, which is quite different from other products on the market, none of the above placement methods can effectively transport the diaphragm into the uterine cavity.

Contents of the invention

The present disclosure aims to solve at least one of the technical problems existing in the prior art. To this end, the present disclosure proposes a device for placing an intrauterine membrane. The inner push rod is provided with claws for clamping the membrane. When the inner push rod is pushed to move axially, the claws can control the expansion or Shrinkage, simple structure, convenient operation, can effectively realize the implantation of the diaphragm.

According to the endometrial patch placement device according to an embodiment of the present disclosure, the endometrial patch placement device includes: a handle, the distal end of the handle is provided with a first through hole; a catheter, the proximal end of the catheter extends into the In the first through hole and fixedly connected with the handle; a push assembly, the push assembly is arranged on the handle and can move along the handle; and an inner push rod, the inner push rod is arranged in the catheter , the inner push rod has a retracted position and an expanded position, the pushing assembly pushes the inner push rod to move between the retracted position and the expanded position, and the distal end of the inner push rod is provided with a mounting diaphragm When the inner push rod is in the retracted position, the claw is at least partially accommodated in the guide tube, when the inner push rod is in the expanded position, the clamp is located in the guide tube outside and unfold.

According to the endometrial patch placement device of the embodiment of the present disclosure, the distal end of the inner push rod is provided with a claw for clamping the diaphragm, and when the pushing component pushes the inner push rod to move, the claw can be at least partially contracted to the catheter At the same time, the relatively soft membrane will be folded and shrunk or unfolded correspondingly under the clamping or separating action of the claws. Wherein, when the claws are at least partly contracted in the catheter, the diaphragm can be folded and contracted, and then the diaphragm can be transported into the uterine cavity, and then the claws are expanded outside the catheter. At this time, the diaphragm is fully unfolded, and the diaphragm It is delivered to the working position of the uterine cavity, and then the placement device is separated from the diaphragm, and the placement device is pulled out to complete the implantation of the diaphragm. In the whole process, the operator only needs to control the pushing components to make the diaphragm reach the working position of the uterine cavity, so as to achieve the effect of treating or preventing uterine adhesions, and the retractable structure of the inner push rod with claws facilitates the placement of the device into the uterine cavity, reducing the pain of the patient. The assembly is simple and the operator is convenient to use.

According to some embodiments of the present disclosure, there are two claws, each of the claws is provided with a first wire passing slot, and the distal end of each of the claws is provided with a first wire passing hole. The distal end of the inner push rod is provided with a second wire passing hole, one side of the first wire passing slot communicates with the first wire passing hole, and the other side of the first wire passing slot communicates with the second wire passing slot. Connected through the wire hole;

The device for placing the endometrium sheet also includes: a traction member. There are two traction members and they correspond to the two claws respectively. One end of each traction member is pierced with the diaphragm and the corresponding first wire passing hole, the first After passing through the wire groove and the second wire passing hole, it passes through the handle and extends to the outside of the handle; or, there is one pulling member, and the two ends of the pulling member respectively connect with the two claws One-to-one correspondence, the two ends of the traction member respectively pass through the diaphragm and the corresponding first wire passing hole, the first wire passing groove and the second wire passing hole, and then pass through the handle And extend to the outside of the handle.

According to some embodiments of the present disclosure, the inner push rod includes a rod body and a positioning rod, the proximal end of the rod body is connected to the pushing assembly, and the distal end of the rod body is fixedly connected to the claw and the positioning rod , there are two claws, the positioning rod is arranged between the two claws, when the inner push rod is in the retracted position, the diaphragm covers the positioning rod and the two positioning rods The claw clamps the diaphragm.

According to some embodiments of the present disclosure, the claw and the positioning bar are made of resilient material.

According to some embodiments of the present disclosure, the distal end of the claw is provided with a limit step, the distal end of the catheter is provided with an open groove, and when the inner push rod is located at the retracted position, one end of the diaphragm abuts against connected to the limiting step and the other end of the diaphragm abuts against the bottom of the opening groove.

According to some embodiments of the present disclosure, the push assembly includes: a push member and a transmission member, one end of the push member is fixedly connected to the transmission member, and the opposite end of the transmission member is connected to the inner push rod The proximal end is fixedly connected, the handle is provided with a chute, and the pusher is used to slide in the chute.

According to some embodiments of the present disclosure, the pushing member includes: a pushing portion and a first connecting portion connected to one side of the pushing portion, the transmission member includes a second connecting portion, and the first connecting portion is One of a buckle and a slot, the second connecting portion is the other of a buckle and a slot, and the buckle and the slot are locked to each other.

According to some embodiments of the present disclosure, the snap fit direction of the pusher and the transmission member is perpendicular to the sliding direction of the pusher.

According to some embodiments of the present disclosure, the handle is provided with a sliding rail opposite to the chute, and the transmission member further includes a The first sleeve part, the end of the inner push rod away from the claw is provided with a second sleeve part, the first sleeve part is sleeved on the second sleeve part and on the slide rail slide inside.

According to some embodiments of the present disclosure, the first sleeve part includes two matching plates oppositely arranged, the two matching plates are fitted in the slide rail, and a sleeve is formed between the two matching plates. Space, the second sleeve part fits in the sleeve space and the two ends of the second sleeve part are respectively provided with limit plates, and the two limit plates are respectively abutted against the transmission part. ends.

According to some embodiments of the present disclosure, the handle includes: an upper cover and a lower cover, the upper cover is provided with a first semicircle part, the lower cover is provided with a second semicircle part, the first semicircle part and the The second semicircular parts cooperate with each other to form the first through hole.

According to some embodiments of the present disclosure, a first matching post is provided on the first semicircular part, a second matching post is provided on the second semicircular part, and a second through hole is provided at the proximal end of the catheter, so that Both the first matching column and the second matching column are fitted in the second through hole.

According to some embodiments of the present disclosure, a positioning ring is sheathed on the outer wall of the catheter, and a scale line is provided on the outer wall, and the positioning ring is configured to be fixed and slideable on the outer wall of the catheter.

Additional aspects and advantages of the disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the disclosure.

Description of drawings

The above and/or additional aspects and advantages of the present disclosure will become apparent and comprehensible from the description of the embodiments in conjunction with the following drawings, in which:

FIG. 1 is a schematic structural view of an endometrial patch placement device according to an embodiment of the present disclosure;

Fig. 2 is an exploded schematic diagram of an endometrial patch placement device according to an embodiment of the present disclosure;

3 is a cross-sectional view of an endometrial patch placement device according to an embodiment of the present disclosure;

Fig. 4 is a schematic diagram of the structure of the endometrial patch placement device in a contracted position according to an embodiment of the present disclosure;

Fig. 5 is a schematic diagram of the structure of the endometrial patch placement device in the deployed position according to an embodiment of the present disclosure;

Fig. 6 is a schematic structural diagram of a pushing assembly according to an embodiment of the present disclosure;

Fig. 7 is a structural schematic diagram of cooperation between a pushing member and a transmission member according to an embodiment of the present disclosure;

Fig. 8 is a schematic structural diagram of a lower cover of a handle according to an embodiment of the present disclosure;

Fig. 9 is a schematic cross-sectional view of a push assembly cooperating with a slide rail according to an embodiment of the present disclosure;

Fig. 10 is a schematic structural diagram of the cooperation between the inner push rod and the transmission member according to an embodiment of the present disclosure;

Fig. 11 is a partial schematic diagram A of Fig. 10;

Fig. 12 is a structural schematic diagram of an inner push rod according to an embodiment of the present disclosure;

Fig. 13 is a structural schematic diagram of cooperation between a diaphragm and a traction member according to an embodiment of the present disclosure.

Reference signs:

100. Endometrial patch placement device; 10. handle; 11. first through hole; 12. chute; 13. slide rail; 14. upper cover; 15. lower cover; 16. second semicircular part; 17. second Two matching columns; 20, conduit; 21, the second through hole; 22, opening groove; 23, positioning ring;

30. Pushing assembly; 40. Pushing part; 41. Pushing part; 42. First connecting part; 50. Transmission part; 51. Second connecting part; Design space; 60, inner push rod; 61, claw; 62, second set part; 63, limit plate; 64, rod body; 65, positioning rod; 66, limit step; 67, first wire slot ; 68, the first wire passing hole; 69, the second wire passing hole; 70, the third through hole; 80, the traction member; 200, the diaphragm.

Detailed ways

Embodiments of the present disclosure will be described in detail below, and the embodiments described with reference to the accompanying drawings are exemplary.

The following describes an endometrial patch placement device 100 according to an embodiment of the present disclosure with reference to FIGS. 1-13 , which is used to implant a patch 200 into the uterine cavity, and isolate the anterior and posterior walls of the uterus through the patch 200 to prevent or prevent intrauterine adhesions. In addition, the "proximal end" described below refers to the end close to the operator during operation, and the "distal end" refers to the end away from the operator during operation.

As shown in FIGS. 1-3 , the endometrial patch placement device 100 includes: a handle 10 , a catheter 20 , a pushing assembly 30 and an inner pushing rod 60 . The distal end of the handle 10 is provided with a first through hole 11 . The proximal end of the catheter 20 extends into the first through hole 11 , and the proximal end of the catheter 20 is fixedly connected with the handle 10 . The pushing assembly 30 is disposed on the handle 10 and can move along the axis of the handle 10 .

The inner push rod 60 is disposed in the catheter 20, and the inner push rod 60 has a retracted position and a deployed position. The proximal end of the inner push rod 60 extends into the handle 10 to cooperate with the push assembly 30, and the push assembly 30 pushes the inner push rod 60 to move between the contracted position and the extended position. The distal end of the inner push rod 60 is provided with a claw 61 for installing the diaphragm 200 . When the inner push rod 60 is in the retracted position, the claw 61 is at least partially accommodated in the conduit 20 , and the claw 61 is closed to clamp the diaphragm 200 . When the inner push rod 60 is in the expanded position, the claw 61 is located outside the catheter 20 , and the claw 61 is deployed to release the diaphragm 200 .

That is to say, the handle 10 is fixedly connected with the catheter 20 , the push assembly 30 is disposed on the handle 10 , the inner push rod 60 is disposed in the catheter 20 , and the proximal end of the inner push rod 60 is located in the handle 10 to cooperate with the push assembly 30 . When the pushing assembly 30 moves axially along the handle 10 , the inner push rod 60 can be pushed to move axially along the catheter 20 , and the distal end of the inner push rod 60 is provided with a claw 61 for installing the diaphragm 200 . When the pushing assembly 30 pushes the inner push rod 60 to move axially toward the proximal end of the handle 10, the claw 61 can be at least partially accommodated in the guide tube 20, that is, the inner push rod 60 is in the retracted position; otherwise, when the pushing assembly 30 pushes When the inner push rod 60 axially moves toward the distal end of the handle 10, the claw 61 is deployed outside the catheter 20, that is, the inner push rod 60 is in the deployed position. With such an arrangement, the operator only needs to push the pushing assembly 30 to freely switch the inner push rod 60 between the retracted position and the expanded position, and enable the claw 61 to be at least partially located in the catheter 20 to be under the limit action of the catheter 20 . The flexible membrane 200 is clamped or spread outside the catheter 20 to release the membrane 200 .

Specifically, as shown in FIGS. 4 and 5 , when the pushing assembly 30 moves axially to the limit position of the proximal end of the handle 10, the inner push rod 60 is located at the retracted position. At this time, the claw 61 clamps the diaphragm 200 and The diaphragm 200 is folded and shrunk, so that the jaws 61 and the diaphragm 200 are at least partially accommodated in the catheter 20 , so that the endometrium placement device 100 can clamp the diaphragm 200 and enter the uterine cavity together. When the diaphragm 200 reaches the working position of the uterine cavity, the pushing assembly 30 can be slowly pushed to drive the inner push rod 60 to move axially to the limit position of the distal end of the handle 10, so that the claw 61 clamps the diaphragm 200 and moves slowly to The outside of the catheter 20 is fully expanded. At this time, the inner push rod 60 is at the unfolded position, and then the diaphragm 200 is separated from the endometrium placement device 100, and the endometrium placement device 100 is withdrawn, so that the diaphragm 200 is placed in the uterus. The working position of the cavity comes into play, that is, the implantation process of the membrane 200 is completed.

Thus, the implantation process of the diaphragm 200 only needs the operator to control the pushing assembly 30 to make the diaphragm 200 reach the working position in the uterine cavity. The membrane placement device 100 can conveniently and accurately send the membrane 200 to a suitable position in the uterine cavity, and can fully expand the soft membrane 200 without causing adverse effects on the membrane 200 and the uterine cavity, so that the membrane The sheet 200 effectively achieves the effect of treating or preventing uterine adhesions. Moreover, the retractable structure of the inner push rod 60 with the claws 61 facilitates the entry of the endometrial patch placement device 100 into the uterine cavity, effectively reducing the pain of the patient and reducing the risk of the operation. In addition, the endometrial patch placement device 100 does not use glued or welded structures, but is connected by mechanical limit, which realizes functions such as positioning and clamping, reduces the difficulty of production and assembly, and at the same time requires less professional skills for the operator .

As shown in Figures 6 and 7 and in conjunction with Figures 1-2, the push assembly 30 includes a push member 40 and a transmission member 50, one end of the push member 40 and the transmission member 50 is fixedly connected, and the opposite end of the transmission member 50 extends into the The handle 10 is fixedly connected with the proximal end of the inner push rod 60 . A chute 12 is provided on the handle 10 along the axial direction of the handle 10 , and the pusher 40 is used to slide in the chute 12 and at least partially exposed to the outside of the handle 10 through the chute 12 for the operator to operate. In this way, through the fixed connection between the pusher 40 and the transmission member 50, and the fixed connection between the transmission member 50 and the inner push rod 60, when the pusher 40 slides in the chute 12, it can push the inner push rod 60 to move axially. , so that the claw 61 clamps or releases the diaphragm 200 .

Further, when the push assembly 30 is located at the proximal end of the chute 12 , the inner push rod 60 is in the retracted position; when the push assembly 30 is located at the far end of the chute 12 , the inner push rod 60 is in the unfolded position.

Wherein, as shown in FIG. 6 and FIG. 7 and in conjunction with FIG. 1-FIG. 2 and FIG. 12 , the pushing member 40 includes a pushing portion 41 and a first connecting portion 42 connected to one side of the pushing portion 41 . The transmission member 50 includes a second connecting portion 51 and a first sleeve portion 52 connected to one side of the second connecting portion 51 . The end of the inner push rod 60 away from the claw 61 (ie, the proximal end of the inner push rod 60 ) is provided with a second sleeve portion 62 . The first connecting portion 42 is one of a buckle and a slot, and the second connecting portion 51 is the other one of a buckle and a slot, and the buckle and the slot are engaged with each other. That is to say, a fixed connection is realized between the pushing member 40 and the transmission member 50 through the first connecting portion 51 and the second connecting portion 42 . The first sleeve portion 52 is sleeved on the second sleeve portion 62 so that the transmission member 50 and the inner push rod 60 are fixedly connected. Such setting is the same as the connection method between the pusher 40 and the transmission member 50, and also realizes the fixed connection between the transmission member 50 and the inner push rod 60 through a simple mechanical limit connection, which is beneficial to production and assembly.

Further, as shown in FIG. 7 , the first connecting portion 42 is a buckle, and the second connecting portion 51 is a slot. Through the snap fit between the buckle and the slot, the fixed connection between the pushing member 40 and the transmission member 50 can be realized. . In addition, the transmission member 50 and the inner push rod 60 are fixedly connected through the first sleeve part 52 and the second sleeve part 62 . In this way, when the pusher 40 slides in the chute 12, the transmission member 50 can push the inner push rod 60 to move axially, and between the pusher 40 and the transmission member 50, and between the transmission member 50 and the inner push rod 60 The assembly is simple and convenient.

Furthermore, the snap fit direction of the pusher 40 and the transmission member 50 is perpendicular to the sliding direction of the pusher 40 , so that when the pusher 40 slides, there will be no problem that the pusher 40 is detached from the transmission member 50 .

Further, the operator can push the inner push rod 60 to move axially by pushing the pushing portion 41 . Moreover, the upper surface of the pushing part 41 is sunken downwards, matching with the operator's thumb, conforming to ergonomics. In addition, the upper surface of the pushing part 41 is provided with a plurality of small ribs, which can increase the frictional force of the contact surface, which is convenient for the operator to operate without problems such as hand slipping.

8-12, the handle 10 is provided with two sliding rails 13 opposite to the chute 12, the first sleeve part 52 is sleeved on the second sleeve part 62, and the first sleeve part 52 is limited between the two slide rails 13 , so that the first sleeve portion 52 slides in the slide rails 13 . That is to say, the first sleeve part 52 of the transmission part 50 is sleeved on the second sleeve part 62 of the inner push rod 60, when the push part 41 slides in the chute 12, on the one hand, it will drive the transmission part 50 and The inner push rod 60 moves axially together, and on the other hand, under the limiting effect of the slide rail 13 on the first sleeve portion 52, the transmission member 50 slides in the slide rail 13, so that the force of the axial movement of the push assembly 30 can be improved. stability.

Further, the length of the slide rail 13 corresponds to the retracted position and the deployed position of the inner push rod 60 . That is to say, when the inner push rod 60 is in the retracted position, the transmission member 50 moves to the extreme position where the slide rail 13 is close to the proximal end of the handle 10; The extreme position of handle 10 far-ends. Of course, the slide rail 13 can also be set longer, so as to be suitable for the implantation of membranes 200 of different sizes. The length of the chute 12 matches the length of the slide rail 13 .

Moreover, as shown in FIG. 6 , the first sleeve portion 52 includes two matching plates 53 oppositely arranged, the two matching plates 53 are fitted in the slide rail 13 , and a sleeve space 54 is formed between the two matching plates 53 , the second sleeve portion 62 fits in the sleeve space 54 , and the two ends of the second sleeve portion 62 are respectively provided with limit plates 63 , and the two limit plates 63 are respectively abutted against the two ends of the transmission member 50 . In this way, the two matching plates 53 set the second sleeve part 62 in the sleeve space 54, and the two ends of the second sleeve part 62 are provided with limiting plates 63, which can make the two matching plates 53 firmly Clamping the second set part 62 restricts the movement of the transmission member 50 , thereby realizing the fixed connection between the transmission member 50 and the inner push rod 60 , and the transmission member 50 can drive the inner push rod 60 to slide in the slide rail 13 .

As shown in Fig. 1, Fig. 2 and Fig. 8, the shape of the handle 10 conforms to ergonomics and is convenient for the operator to hold. The handle 10 includes an upper cover 14 and a lower cover 15, the upper cover 14 is provided with a first semicircular portion, the lower cover 15 is provided with a second semicircular portion 16, and the first semicircular portion and the second semicircular portion 16 cooperate with each other to form a first channel. Hole 11. In this way, the circular first through hole 11 can be formed through the cooperation of the first semicircular part and the second semicircular part 16 , which is convenient for the catheter 20 to be inserted into the handle 10 .

Wherein, the first semicircular part is provided with a first matching post, the second semicircular part 16 is provided with a second matching post 17, the proximal end of the catheter 20 is provided with a second through hole 21, the first matching post and the second matching post 17 are fitted in the second through hole 21. That is to say, in the up-and-down direction relative to the handle 10, the proximal end of the catheter 20 is provided with a second through hole 21 through up and down, and the first matching column of the upper cover 14 and the second matching column 17 of the lower cover 15 can be inserted into the catheter. 20 in the second through hole 21, thereby realizing the fixed connection of the catheter 20 and the handle 10. Wherein, the shape of the first matching column is adapted to the second through hole 21, and the shape of the second matching column is adapted to the shape of the second through hole 21, that is, the shapes of the three can be circular or square or other Shapes that fit each other.

In the embodiment of the present disclosure, the upper cover 14 and the lower cover 15 of the handle 10 can be connected by buckles, which is convenient for installation and disassembly. Of course, the upper cover 14 and the lower cover 15 of the handle 10 can also be connected by other methods such as bolt connection, and are not limited to the above-mentioned snap connection method.

In addition, in the present disclosure, the sliding groove 12 is opened on the upper cover 14 , and the sliding rail 13 is arranged on the inner surface of the lower cover 15 .

As shown in Figures 4 and 5 and Figures 10-13, the inner push rod 60 includes a rod body 64 and a positioning rod 65, the proximal end of the rod body 64 is provided with a second sheathing portion 62 connected to the push assembly 30, and the distal end of the rod body 64 It is fixedly connected with the claw 61 and the positioning rod 65 . There are two claws 61 , and the positioning rod 65 is arranged between the two claws 61 . When the inner push rod 60 is in the retracted position, the diaphragm 200 is folded in half to cover the positioning rod 65 , and the diaphragm 200 is clamped by the claws 61 . In this way, the positioning rod 65 is arranged between the two claws 61 , and the diaphragm 200 is folded in half to cover the positioning rod 65 , so that the folding and contraction of the diaphragm 200 can be positioned. When the inner push rod 60 is in the retracted position, ensure that the claws 61 can firmly clamp both sides of the diaphragm 200, so that the diaphragm 200 is at least partially folded and shrunk in the catheter 20, preventing the diaphragm 200 from shifting, and can avoid The clamping force exerted by the claws 61 on the diaphragm 200 is too large, making it difficult for the diaphragm 200 to reset and expand; when the inner push rod 60 is in the unfolded position, the claws 61 can be completely separated from both sides of the diaphragm 200, and the diaphragm 200 will not deviate, so that the diaphragm 200 can be successfully implanted into the uterine cavity.

Moreover, the distal end of the claw 61 is provided with a limiting step 66, and the distal end of the catheter 20 is provided with an open groove 22. When the inner push rod 60 is in the retracted position, one end of the diaphragm 200 abuts on the limiting step 66, and the other end It abuts against the bottom of the opening groove 22 . In this way, when the inner push rod 60 is in the retracted position, one end of the diaphragm 200 can be abutted against the limit step 66, and the other end can be abutted against the bottom of the open groove 22, and the open groove 22 can be used for the opposite two sides of the diaphragm 200. The side is exposed, and the opening groove 22 can further prevent the membrane 22 from being unfolded arbitrarily. In addition, the limiting step 66 can be configured as a structure with a smooth surface, so as not to cause damage to the uterine cavity.

In an embodiment of the present disclosure, the claw 61 and the positioning rod 65 can be made of resilient materials to cooperate with the elastic diaphragm 200, so that the diaphragm 200 will not be damaged, and the claw 61 can also be unfolded. When using its own elastic force to assist the expansion of the membrane 200, it is better to slowly expand the membrane 200, and the operator does not need to use additional tools to expand the membrane 200.

In combination with the diaphragm 200 in the initial state shown in FIG. 13 , a first wire passage 67 is provided on the claw 61 , a first wire passage 68 is provided on the limit step 66 , and one side of the first wire passage 67 In communication with the first wire passing hole 68, the distal end of the inner push rod 60 (that is, the distal end of the rod body 64) is provided with a second wire passing hole 69, the other side of the first wire passing groove 67 and the second wire passing hole The hole 69 communicates. The rod body 64 has a third through hole 70 penetrating through the inside and the proximal end of the rod body 64 , and the proximal end of the upper cover 14 and the proximal end of the lower cover 15 cooperate to form a slot. And, the endometrial patch placement device 100 also includes: two traction pieces 80, which are in one-to-one correspondence with the two claws 61, and one end of each traction piece 80 is pierced with the membrane 200 and the corresponding After the first wire passing hole 68 , the first wire passing groove 67 and the second wire passing hole 69 , enter the third through hole 70 of the inner push rod 60 and extend to the outside of the handle 10 through the slot of the handle 10 . That is to say, when the diaphragm 200 is placed at the position of the claw 61, the long ends of the two traction members 80 are first passed through the diaphragm 200, the first wire hole 68, the first wire slot 67, the second wire hole After the thread hole 69, after passing through the third through hole 70 of the inner push rod 60, it extends to the outside of the handle 10 through the slot of the handle, so that the long ends of the two traction parts 80 are placed on the outside of the handle 10, and the two traction parts 80 is formed with two heads on the outside of the handle 10, while ensuring that the two heads are aligned with each other, so that when the claw 61 is deployed, the elastic restoring force of the claw 61 is transmitted to the diaphragm 200 through the traction member 80, that is, the clip When the pawl 61 is elastically reset, the traction member 80 can drive the diaphragm 200 to unfold, which can ensure that the diaphragm 200 is evenly stressed, so that the diaphragm 200 is in a completely flattened state. In this way, the operator can spread the membrane 200 without additional tools.

After the diaphragm 200 is placed in place, the operator can simultaneously pull the two heads of the traction member 80 to separate the traction member 80 from the diaphragm 200 . After the pulling member 80 is withdrawn, the endometrial patch placement device 100 can be withdrawn from the uterine cavity. It can be understood that one traction member 80 can also be provided. After the two ends of a traction member 80 respectively pass through the diaphragm 200, they pass through the first wire passing hole 68, the first wire passing groove 67, the second wire passing hole 69, The third through hole 70 and the slot at the proximal end of the handle 10 go out of the handle 10 . After the membrane 200 is placed in place, the operator pulls one end of the traction member 80 to separate the traction member 80 from the membrane 200 .

In addition, the end of the diaphragm 200 close to the fundus of the uterus is used for the traction member 80 to pass through, and the end of the diaphragm 200 close to the cervix is threaded with a tail thread. After the diaphragm 200 is implanted in place, the tail thread passes through the cervix. The diaphragm 200 can be removed from the uterine cavity by pulling the tail.

In particular, a positioning ring 23 is sheathed on the outer wall of the catheter 20 , and the outer wall is provided with a scale line. The positioning ring 23 can be fixed and slid on the outer wall of the catheter 20 to limit the depth into the uterine cavity.

According to the connection relationship between the various components described above, the following assembly method can be adopted: firstly, the positioning ring 23 is sleeved on the catheter 20; then, the claw 61 is clamped by manual clamping so that the inner push rod The distal end of 60 is put into the catheter 20, and pushed to the end, so that the jaws 61 are opened, as shown in Figure 11; A traction member 80 extends to the outside of the proximal end of the catheter 20 after passing through the first wire passing hole 68, the first wire passing groove 67, the second wire passing hole 69 and the third through hole 70, and makes the tail wire pass through the third through hole 70. After the through hole 70 extends to the outside of the proximal end of the catheter 20; then the catheter 20 and the inner push rod 60 are fixed together on the lower cover 15 of the handle 10, that is, the second matching post 17 is inserted into the second through hole 21, and the second sleeve The setting part 62 is limited between the slide rails 13, and the inner push rod 60 is located at the position of the slide rail 13, and the transmission member 50 and the inner push rod 60 are connected; then the traction member 80 and the tail wire are straightened out, so that the traction member 80 The two heads and the two ends of the tail wire extend to the outside of the proximal end of the lower cover 15; finally, the upper cover 14 and the lower cover 15 are snapped together, and the pusher 40 is snapped connected with the transmission member 50, then the palace The endometrial patch placement device 100 is assembled. After the assembly is completed, as shown in FIG. 5 , the pusher 40 is at the limit position at the far end of the chute 12 .

According to the structure of the above-mentioned endometrial patch placement device 100, its working principle and operation are as follows:

First, the jaws 61 are in the open state in the free state. When the endometrial patch placement device 100 needs to be used after assembly, the patch 200 needs to be clamped. After the patch 200 is symmetrically wrapped on the positioning rod 65, the The pushing member 40 slowly moves to the proximal end of the chute 12 to a limit position, at which point the ideal clamping state of the diaphragm 200 is shown in FIG. 4 .

Then, after the diaphragm 200 clamped by the endometrium placement device 100 is sent to the working position in the uterine cavity, the pusher 40 is slowly moved to the extreme position toward the far end of the chute 12, and the claws 61 are deployed by virtue of their own elasticity. When the claw 61 is unfolded, the traction member 80 worn on the diaphragm 200 will drive the diaphragm 200 to fully unfold, and then slowly pull out the two traction members 80 of the diaphragm 200 at the same time, which can ensure that the diaphragm 200 is evenly stressed and prevent the diaphragm 200 from Due to uneven force, it can be folded arbitrarily, so that the endometrial patch placement device 100 is separated from the diaphragm 200, and finally the endometrial patch placement device 100 is withdrawn, the diaphragm 200 will stay in the working position, and the tail thread will pass through the cervix , to complete the implantation of the diaphragm 200 .

In addition, when in use, it is necessary to first use an endoscope to measure the depth of the uterine cavity, and subtract the measured depth of the uterine cavity from the axial length when the claw 61 is stretched out to the limit, that is, the position where the positioning ring 23 is placed on the catheter 20 position size. After the positioning ring 23 is adjusted in place, the inner push rod 60 is positioned at the retracted position, so that the diaphragm 200 reaches an ideal clamping state.

Therefore, the implantation process of the diaphragm 200 only needs the operator to control the push assembly 30 to make the diaphragm 200 reach the working position of the uterine cavity. The patch placement device 100 can conveniently and accurately send the patch 200 to a suitable position in the uterine cavity, and can fully expand the soft patch 200 without causing adverse effects on the patch 200 and the uterine cavity, thereby effectively realizing the membrane Tablet 200 is useful for treating or preventing uterine adhesions. Moreover, the retractable structure of the inner push rod 60 with the claws 61 facilitates the entry of the endometrial patch placement device 100 into the uterine cavity, effectively reducing the pain of the patient and reducing the risk of the operation. In addition, the endometrial patch placement device 100 does not use glued or welded structures, and realizes functions such as positioning and clamping through mechanical limit connections, which reduces the difficulty of production and assembly, and at the same time requires less professional skills for operators .

In describing the present disclosure, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" , "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying the referred device or Elements must have certain orientations, be constructed and operate in certain orientations, and thus should not be construed as limitations on the present disclosure.

In the description of this specification, references to the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific examples," or "some examples" are intended to mean that the implementation A specific feature, structure, material, or characteristic described by an embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example.

Although the embodiments of the present disclosure have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present disclosure. The scope of the present disclosure is defined by the claims and their equivalents.

Claims

An endometrial sheet placement device, characterized in that it comprises:

a handle, the distal end of which is provided with a first through hole;

a catheter, the proximal end of which extends into the first through hole and is fixedly connected to the handle;

a push assembly, the push assembly is arranged on the handle and can move along the handle; and

an inner push rod disposed within the guide tube, the inner push rod has a retracted position and a deployed position, the pushing assembly pushes the inner push rod between the retracted position and the deployed position move, the distal end of the inner push rod is provided with a claw for installing the diaphragm, when the inner push rod is in the retracted position, the claw is at least partially accommodated in the catheter, and the inner push rod In the deployed position, the jaws are positioned outside the catheter and deployed.
The endometrial patch placement device according to claim 1, characterized in that there are two claws, each of which is provided with a first wire-passing groove, and the distal end of each of the claws A first wire passing hole is provided, and the distal end of the inner push rod is provided with a second wire passing hole, one side of the first wire passing groove communicates with the first wire passing hole and the first wire passing hole The other side of the slot communicates with the second wire hole;

The endometrial patch placement device also includes: a traction member;

There are two traction members and they correspond to the two claws respectively. One end of each traction member is pierced with the diaphragm and the corresponding first wire passing hole, the first passing through the wire groove and the second wire passing hole, passing through the handle and extending to the outside of the handle; or,

There is one traction member, and the two ends of the traction member respectively correspond to the two claws one by one, and the two ends of the traction member respectively pass through the diaphragm and the corresponding first passing wire After the hole, the first wire passing slot and the second wire passing hole, it passes through the handle and extends to the outside of the handle.
The endometrial patch placement device according to claim 1 or 2, wherein the inner push rod comprises a rod body and a positioning rod, the proximal end of the rod body is connected to the pushing assembly and the distal end of the rod body is It is fixedly connected with the claw and the positioning rod, there are two claws, the positioning rod is arranged between the two claws, when the inner push rod is in the retracted position, the The membrane wraps the positioning rod and the two claws sandwich the membrane.
The endometrial patch placement device according to claim 3, characterized in that, the claws and the positioning rod are made of resilient materials.
The endometrial patch placement device according to any one of claims 1-4, characterized in that, the distal end of the claw is provided with a limit step, the distal end of the catheter is provided with an open groove, and the inner When the push rod is at the retracted position, one end of the diaphragm abuts against the limiting step and the other end of the diaphragm abuts against the bottom of the opening groove.
The endometrial patch placement device according to any one of claims 1-5, wherein the pushing assembly comprises a pushing member and a transmission member, and one end of the pushing member and the transmission member is fixedly connected, and The opposite end of the transmission member is fixedly connected to the proximal end of the inner push rod, the handle is provided with a chute, and the pusher is used to slide in the chute.
The endometrial patch placement device according to claim 6, wherein the pushing member includes a pushing part and a first connecting part connected to one side of the pushing part, and the transmission part includes a second connecting part. department,

Wherein, the first connecting portion is one of a buckle and a slot, the second connecting portion is the other one of a buckle and a slot, and the buckle and the slot are engaged with each other.
The endometrial patch placement device according to claim 7, characterized in that, the snap-fitting direction of the pushing member and the transmission member is perpendicular to the sliding direction of the pushing member.
The endometrial patch placement device according to claim 7 or 8, characterized in that, the handle is provided with a slide rail opposite to the chute, and the transmission part also includes a The first sleeve part is connected to the side away from the first connecting part, the end of the inner push rod away from the claw is provided with a second sleeve part, and the first sleeve part is sleeved on the on the second sleeve part and used for sliding in the slide rail.
The endometrial patch placement device according to claim 9, characterized in that, the first sheathing part comprises two matching plates arranged oppositely, the two matching plates are fitted in the slide rail, and the two matching plates are A sleeve space is formed between the matching plates, the second sleeve part fits in the sleeve space and the two ends of the second sleeve part are respectively provided with limit plates, and the two limit plates The plates respectively abut against the two ends of the transmission member.
The endometrial patch placement device according to any one of claims 1-10, wherein the handle includes an upper cover and a lower cover, the upper cover is provided with a first semicircular portion, and the lower cover A second semicircle is provided on the top, and the first semicircle and the second semicircle cooperate with each other to form the first through hole.
The endometrial patch placement device according to claim 11, characterized in that, the first semicircular part is provided with a first matching post, the second semicircular part is provided with a second matching post, and the catheter The proximal end is provided with a second through hole, and the first matching post and the second matching post are fitted in the second through hole.
The endometrial patch placement device according to any one of claims 1-12, wherein a positioning ring is sheathed on the outer wall of the catheter, and a scale line is provided on the outer wall, and the positioning ring configured to be fixed and slideable on the outer wall of the conduit.