WO2023184056A1

WO2023184056A1 - Medical closing clamp

Info

Publication number: WO2023184056A1
Application number: PCT/CN2022/083250
Authority: WO
Inventors: 缪东林
Original assignee: 江苏唯德康医疗科技有限公司
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2023-10-05
Also published as: CN117425443A

Abstract

A medical closing clamp, consisting of at least two closing clamp subsections (1). The closing clamp subsections (1) comprise connecting ends connected to each other and clamping ends, and the connecting ends are connected by means of connecting assemblies (18) to form an annular structure; each clamping end is provided with a clamping jaw (3); the clamping jaw (3) is made of a shape memory material; each connecting assembly (18) of the annular structure comprises an insertion slot (6) located at a connecting end of one of the closing clamp subsections (1) and an insertion head (5) located at an adjacent connecting end of the other closing clamp subsection (1); the insertion head (5) is suitable for inserting into the insertion slot (6); each connecting assembly (18) is provided with a connecting member between at least one group of two connecting ends connected to each other; when the connecting member is separated from at least one of the connecting ends, the insertion head (5) can be separated from the insertion slot (6). The present medical closing clamp is disconnected in a circumferential direction; the connecting assemblies (18) strengthen connection by means of the connecting members; when the medical closing clamp needs to be taken out, the connecting members can be removed so that the insertion heads (5) can be separated from the insertion slots (6) under the action of external force.

Description

A medical closing clip

Technical field

The present invention relates to the technical field of medical devices, and in particular to a medical closure clip.

Background technique

Medical closing clips are mainly used to clamp and suture human wound tissue during endoscopic surgery. When the wound tissue recovers, the closing clip needs to be removed. There is an integrated closing clip in the existing technology. The rear end of this integrated closing clip is The ring-shaped part has a clamping claw at the front end. A pull wire is connected to the ring-shaped part, and the closing clip is taken out by pulling the pull wire. During this process, the clamping claw may easily cause damage to human tissue due to the strong gripping force of the clamping claw, resulting in Secondary injury, and it is also difficult to remove. For this reason, it is necessary to design a medical closure clip that is easy to remove.

Contents of the invention

In order to solve the technical problem that the medical closure clip in the prior art may potentially cause damage to human tissue during the removal process, cause damage to human tissue, cause secondary damage, and is also difficult to remove, the present invention provides A medical closure clip solves the above problems.

The technical solutions adopted by the present invention to solve the technical problems are:

A medical closing clip is assembled from at least two closing clip parts. The closing clip part includes a connecting end and a clamping end. The connecting end is connected through a connecting component to form a ring structure; the clamping The end is provided with a clamping claw. After the closing clamp parts are assembled into the medical closing clamp, the clamping claws can mesh with each other in a natural state; the clamping claws are made of shape memory material; the connecting component includes one of the closing clamps. A socket at the connecting end of the clip portion and a plug located at the connecting end of another adjacent closed clip portion, the plug being adapted to be inserted into the socket; the connecting assembly also includes a connector connecting two adjacent connecting ends, When the connecting piece is separated from at least one of the connecting ends, the plug can be separated from the socket.

Further, the adjacent plugs and sockets are fastened to each other along the circumferential direction.

Further, the opening width of the socket is smaller than the maximum width of the plug located in the socket.

Further, the connecting piece includes a snap ring and a first binding wire. The snap ring is sleeved on the connecting component of an annular structure. The snap ring is an annular structure that can be circumferentially broken and deformed under the action of external force. The third One end of the first bundled wire is connected to the snap ring, and the other end of the first bundled wire is connected to the plug.

Further, the connecting member is a ring that is sleeved on the outer circumference of the annular structure, a C-shaped circlip that is sleeved on the connecting component, or a sleeve that is sleeved on the connecting component.

Further, the connecting piece is made of bioabsorbable medical material.

Further, the connecting member is a second binding wire connecting the plug and the connecting end adjacent to the plug.

Further, the second binding wire is made of bioabsorbable medical material.

Further, the connecting component has lugs protruding from two connecting end surfaces along both axial sides of the annular structure, and the connecting member is a third binding wire that connects opposite lugs on adjacent connecting ends. .

Further, a recessed wrapping portion is formed between the lug and the connecting end, and the third binding wire is wrapped around the wrapping portion of the lug.

Further, the socket extends to the circumferential outer surface of the annular structure.

Further, the snap ring is a circumferentially broken split ring.

Furthermore, the snap ring has a closed annular structure, and a weak connection area is provided on the snap ring, and the weak connection area can be broken circumferentially under the action of external force.

The present invention also provides a medical closing clip. The medical closing clip is made up of at least two closing clip parts. The closing clip parts include a connecting end and a clamping end that are connected to each other. Each of the closing clips The connecting ends of the segments are connected end to end in order to form a ring structure; the clamping end is provided with a clamping jaw, the clamping jaw is made of shape memory material, and the clamping jaws of the medical closure clip mesh with each other in a natural state; The buckling part of the annular structure includes a socket located in one of the closing clip portions and a plug located in the adjacent other closing clip portion, and the plug is suitable for insertion into the socket; on the plug of the annular structure A pulling wire is connected, and when the pulling wire is pulled, the plug and the socket that are connected to each other can be separated.

Further, the inner surface of the socket is an arc surface or a rectangular surface.

Further, the pulling wire is located on the outer surface of the plug.

Further, the plug has two penetrating holes, and the two ends of the pulling wire are connected to the two threading holes.

Further, the socket does not extend to the circumferential inner surface of the annular structure.

The present invention also provides a medical closing clip, which includes at least two closing clip segments. The closing clip segments include connecting ends and clamping ends that are connected to each other. The connecting ends of each closing clip segment are connected end to end. are connected to form a ring structure; the clamping end is provided with a clamping jaw, and the clamping jaw is made of shape memory material; after the closing clip is partially assembled into the medical closing clip, the clamping jaw can be used in a natural state Engage with each other; the medical closure clip also includes a connecting piece connecting two adjacent connecting ends, and the connecting piece can be separated from at least one of the connecting ends under the action of external force.

Further, the connecting member is a ring that is placed on the outer circumferential surface of the annular structure.

Furthermore, the clasp is made of bioabsorbable medical material.

Further, the connecting end has a lug protruding along at least one side of the axial direction of the annular structure, and the connecting member is a wire turn connecting the corresponding lug on the adjacent connecting end.

Further, a recessed winding portion is formed between the arm and the connecting end, and the wire turns are wound around the winding portion of the arm.

Further, the turns of thread are medical grade PE suture thread.

Further, the wire turns are made of bioabsorbable medical materials.

The beneficial effects of the present invention are:

(1) The medical closure clip of the present invention is formed by splicing the connecting ends of at least two closure clip parts. The connecting ends are buckled end to end to form a ring structure. The buckling part of the ring structure passes through the periphery of the plug and the socket. The limiter keeps it in a ring-like structure, and the pulling wire is used to pull the plug outward to separate the buckling part. The engaged jaws can be separated to facilitate the removal of the medical closure clip and prevent the integral closure clip from appearing during removal. The tearing wound causes secondary bleeding.

(2) The medical closure clip of the present invention is formed by connecting the end faces of at least two closure clip segments. The connection assembly is strengthened by a connector. When the medical closure clip needs to be taken out, the connector can be removed so that the plug can be exposed to external forces. Under the influence, disengage from the socket.

(3) The medical closure clip is circumferentially disconnected and assembled from at least two closure clip segments. The connecting ends of adjacent closure clip segments are connected through connectors. When the medical closure clip needs to be taken out, the connectors can be removed. The closing clamp parts are separated from each other, so that the clamping claws of the closing clamp parts are released and the clamping state is released.

(4) Use an annular ring to completely wrap the outer periphery of all the closing clamp parts, thereby limiting the opening of the closing clamp parts. When it is necessary to release the clamping, just push the ring along the axial direction to make it in contact with the closing clamp. Just separate it in parts.

(5) Set lugs on the connecting end of the closed clip part, and tie the lugs on the adjacent connecting ends through wire turns to connect the two. When it is necessary to release the clamping, just pull the wire turns to make the wire turns Just release it.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and examples.

Figure 1 is a front view of one embodiment of the medical closure clip according to the present invention;

Figure 2 is a front view of another embodiment of the medical closure clip according to the present invention;

Figure 3 is a side view of Figure 2;

Figure 4 is a side view of the closure clip portion of one embodiment of the present invention;

Figure 5 is a front view of an assembled state of one embodiment of the medical closure clip according to the present invention;

Figure 6 is an exploded schematic view of the clasp and medical closure clip in Figure 5;

Figure 7 is a schematic diagram of the medical closing clip shown in Figure 5 being loaded on the clip applicator cap;

Figure 8 is a schematic diagram of the state when the medical closure clip in Figure 5 is taken out;

Figure 9 is a perspective view of one embodiment of the medical closure clip according to the present invention;

Figure 10 is a perspective view of one embodiment of the medical closure clip according to the present invention;

Figure 11 is a front view of Figure 10;

Figure 12 is a perspective view of one embodiment of the medical closure clip according to the present invention;

Figure 13 is a front view of Figure 12;

Figure 14 is a front view of one embodiment of the medical closure clip according to the present invention;

Figure 15 is a front view of one embodiment of the medical closure clip according to the present invention;

Figure 16 is an assembled perspective view of another embodiment of the medical closure clip according to the present invention;

Figure 17 is a front view of another embodiment of the medical closure clip (excluding the clasp) according to the present invention;

FIG. 18 is a side view according to FIG. 17 .

In the picture, 1. Closing clip part, 2. Threading hole, 3. Clamp, 4. Fastening part, 5. Plug, 6. Socket, 7. Pulling wire, 8. Snap ring, 801, notch, 9 , Hugging ring, 10. C-type circlip, 11. Sleeve, 12. Second binding wire, 13. Lug, 14. Third binding wire, 15. Ring structure, 16. Limiting groove, 17. Winding Department, 18. Connecting components, 19. First binding wire, 20. Wire turns, 21. Clamping cap.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and cannot be understood as limiting the present invention.

The present invention proposes a medical closure clip. Refer to Figure 1. The medical closure clip is formed by splicing the ends of at least two closure clip segments 1. The closure clip segment 1 includes a connecting end and a clamping end that are connected to each other. The connecting ends of each of the closed clamp parts 1 are connected end to end in order to form a ring structure; one end of the ring structure in the width direction (that is, the clamping end) is correspondingly provided with at least two clamping jaws 3 that can mesh with each other. The width direction refers to the direction parallel to the central axis of the annular structure. The clamping jaw 3 is made of shape memory material, such as nickel-titanium alloy. The buckling part 4 of the annular structure includes a The socket 6 and the plug 5 located in another adjacent closed clip portion. The plug 5 is suitable for insertion into the socket 6 and limits each other along the circumferential direction. The fastening means that the plug 5 and the socket 6 can limit each other when connected. .

Clamp applicator cap 21 (medical transparent mucosal suction cap) is a commonly used accessory for endoscopic treatment. It is widely used to assist hemostatic treatment, foreign body removal, magnifying endoscopy, improving the tangent position and endoscopic imaging observation of lesions in difficult-to-observe areas. Referring to Figure 7, before the actual operation, the clamping cap 21 (medical transparent mucosal suction cap) is placed on the outer peripheral side of the front end of the lens of the endoscope, and the medical closing clip will be loaded on the clamping cap 21. At this time, the clip The claw 3 will be opened by the clamping cap 21, and the medical closing clip can follow the endoscope into the human body cavity. After the medical closing clip is released to the target tissue, due to the shape memory properties, the clamping claw 3 will return to its original shape, thus The clamping claws 3 of the multiple closing clamp parts 1 are engaged with each other to firmly clamp the target tissue to achieve the purpose of closing the wound and stopping bleeding. The plug 5 and the socket 6 in the present invention are circumferentially connected, that is, they are limited by relative movement in the circumferential direction; the plug 5 is connected to a pull wire 7. When the pull wire 7 is pulled, the plug 5 and the socket 6 are connected to each other. It can be separated by using surgical instruments with pulling capabilities such as extraction hooks or sampling forceps to pull the pulling wire 7 to drive the plug 5 away from the socket 6, and the connecting ends of the two interconnected closing clamp parts 1 can be separated, thereby making the The engaged jaws 3 are separated so that the closing clamp part 1 can be removed.

Annular Structure In a specific embodiment of the present application, as shown in Figures 1 to 3, the medical closure clip is formed by connecting the connecting ends of two closure clip sections 1 end to end to form an annular structure; the two closure clips Each part 1 has a clamping jaw 3. The clamping jaws 3 are made of shape memory material, such as nickel-titanium alloy. In a natural state, the two clamping jaws 3 can clamp human tissue when closed. Under the action of external force, the two clamping jaws 3 The claw 3 is open, and the natural state refers to a state without external force. The formed ring structure has two fastening parts 4 (as shown in Figure 3). The fastening parts 4 include a socket 6 located at the connecting end of one of the closing clip parts 1 and the other adjacent closing clip part 1. The plug 5 and socket 6 at the connection end refer to the groove located at one of the circumferential ends of the connection end (as shown in Figure 4). The plug 5 refers to the structure protruding from one of the circumferential ends of the connection end. The plug 5 is suitable for insertion into the socket 6 ; The plug 5 and the socket 6 are preferably connected to each other along the circumferential direction, so as to play a circumferential limiting role. In order to facilitate batch processing, the two closing clamp parts 1 have the same structure. The two ends of each closing clamp part 1 are plugs 5 and sockets 6 respectively. At this time, the plugs 5 on each fastening part 4 are connected with pulleys. With the pull wire 7, you can pull one of the pull wires 7 to separate the two clamping jaws 3. At this time, one connecting end of the two closed clamp parts 1 is still connected by the buckle part 4, or you can pull the two pull wires 7. , the annular structure is decomposed into two independent closing clamp parts 1, and then the surgical instruments with pulling capabilities such as extraction hooks or sampling forceps are used to remove them.

In other optional embodiments, the annular structure can also be formed by three, four or more different closing clip parts 1 connected end to end at the connecting end.

In this embodiment, the inner surface of the socket 6 is an arc surface or a rectangular surface, and the plug 5 and the socket 6 have the same shape. When the inner surface of the socket 6 is an arc surface (as shown in Figure 1), the opening width of the socket 6 is smaller than the diameter of the plug 5 (as shown in Figure 2); when the inner surface of the socket 6 is a rectangular surface, the opening width of the socket 6 is smaller than the width of the plug 5.

In order to pull the plug 5 outward, preferably, the pulling wire 7 is located on the outer surface of the plug 5 . In this embodiment, the plug 5 has two through holes 2, and the two ends of the pulling wire 7 are connected to the two threading holes 2, thereby forming a pulling area between the two threading holes 2, and the hook or sampling pliers can be removed. The surgical instrument with pulling ability can directly hook the pulling wire 7 between the two threading holes 2.

If the socket 6 is not connected to the circumferential outer surface and the inner circumferential surface of the annular structure, the plug 5 will be wrapped by the socket 6. At this time, the plug 5 and the socket 6 need to have a certain staggered space in the thickness direction so that the plug 5 can After moving along the thickness direction, it is released from the buckling relationship with the socket 6. In order to make the plug 5 easier to pull, it is preferred that the socket 6 extends to the circumferential outer surface of the annular structure, so that the outer surface of the plug 5 can be exposed. At this time, as long as Pulling the pulling wire 7 outward can cause the plug 5 to move outward, thereby disengaging from the socket 6 .

The socket 6 can penetrate the circumferential inner surface of the annular structure or not. When the socket 6 penetrates the circumferential inner surface of the annular structure, the plug 5 and the socket 6 are in contact with human tissue at the same time, and the human tissue affects the plug 5 and the socket 6. The expansion force may be different, which may cause the plug 5 and the socket 6 to be staggered and separated. For this reason, preferably, the socket 6 does not extend to the circumferential inner surface of the annular structure, that is, the socket 6 does not penetrate the closing clip part 1 The inner circumferential surface of the plug 5 is not in contact with human tissue. When subject to the expansion effect of human tissue, the plug 5 and the socket 6 at the same fastening part 4 expand synchronously. In the circumferential direction, the plug 5 and the socket 6 buckle gradually. increase, the plug 5 will not automatically detach from the socket 6.

Referring to Figures 5-15, the present invention also proposes a medical closure clip, which is assembled from at least two closure clip segments 1. The closure clip segment 1 includes interconnected connecting ends and clamping ends. , the connecting ends are connected through connecting components to form a ring structure; the clamping end is provided with clamping jaws 3, and after the closing clamp part 1 is assembled into the medical closing clamp, the clamping jaws 3 can mesh with each other in a natural state; The clamping claw 3 is made of shape memory material. Before the actual operation, the medical closing clamp will be loaded on the clamping cap 21 (medical transparent mucosal suction cap). The clamping cap 21 (medical transparent mucosal suction cap) is the inner A commonly used accessory for endoscope treatment, it is widely used to assist hemostatic treatment, foreign body removal, magnifying endoscopy, improving the tangent position and endoscopic imaging observation of lesions in difficult-to-observe areas. Referring to Figure 7, the clamping cap 21 of this embodiment is mounted on the front end of the lens of the endoscope. At this time, the clamping jaw 3 will be opened by the clamping cap 21. The endoscope passes through the human body cavity and is observed through the lens. After the target tissue is released, after the medical closing clip is released to the target tissue, due to the shape memory characteristics, the clamping jaws 3 will return to their original shape, thereby allowing the clamping jaws 3 of the multiple closing clip segments 1 to engage with each other and firmly clamp the target tissue. To achieve the purpose of wound closure and hemostasis; the connection assembly includes a socket 6 located at the connection end of one of the closure clip parts 1 and a plug 5 located at the connection end of the adjacent other closure clip part 1, and the plug 5 is suitable for insertion In the socket 6; the connecting component also includes a connecting piece disposed between at least one set of two connecting ends that are connected to each other. The connecting piece mainly plays the role of a stable connection. When the connecting piece is separated from at least one of the connecting ends, the plug 5 can be separated from the socket 6 .

When the number of connectors is less than the number of plugs 5 or sockets 6, at the connection ends where no connectors are provided, plugs 5 and sockets 6 are connected to each other; and at the connection ends where connectors are provided, plugs 5 and sockets 6 can only To connect with each other (you can also fasten each other), just rely on the connecting piece to pull the two adjacent connecting ends.

The connecting piece can play the role of connecting two adjacent connecting ends, and can ensure that the ring structure will not fail within a certain period of time. When it is necessary to take out the medical closure clip, just remove the connecting piece, and under the expansion of human tissue or Under the action of slight pulling force during the operation, the plug 5 can protrude outwards and break away from the socket 6, and the medical closure clip is decomposed into a plurality of separate closure clip parts 1. There will be no damage during the removal and removal of the medical closure clip. Pulling damage to human tissue.

Several embodiments of medical closure clips are described in detail below for different connectors:

Embodiment 1

As shown in Figures 5 to 8, a medical closure clip is provided. The medical closure clip is formed by two closure clip sections 1 connected end to end; the connecting ends of the two closure clip sections 1 are connected to form a ring structure. , the clamping ends of the two closed clamp parts 1 mesh with each other; the clamp jaws 3 are made of shape memory material, such as nickel-titanium alloy. In the natural state, the two clamp jaws 3 mesh to clamp human tissue. Under the action of external force, The two clamping jaws 3 are open, and the natural state refers to a state without external force.

In this embodiment, there is at least one set of connection components 18. The connection component 18 includes a socket 6 located at the connection end of one of the closing clip parts 1 and a plug 5 located at the connection end of the adjacent other closing clip part 1. The socket 6 is Refers to the groove located at one of the circumferential ends of the connecting end, and the plug 5 refers to the structure protruding from one of the circumferential ends of the connecting end. The plug 5 is suitable for insertion into the socket 6; the plug 5 and the socket 6 are preferably connected to each other along the circumferential direction, so that It can play a circumferential limiting role, and the annular structure can maintain the annular structure when there is no offset in the radial direction. The connecting component also includes a connecting piece that connects two adjacent connecting ends, and the connecting piece mainly plays a role in stabilizing the connection. When the connecting piece is separated from at least one of the connecting ends, the plug 5 can be separated from the socket 6 . When taking out the medical closure clip, one of the connecting parts can be removed, so that the adjacent closure clip segments 1 are unconnected and the annular structure is separated. At this time, the other ends of the two closure clip segments 1 are still connected to each other, or the other ends of the two closure clip segments 1 are still connected to each other. Both connectors are removed, so that the medical closure clip is decomposed into two independent closure clip parts 1, and then the extraction hook is used to take out these closure clip parts 1 that are separated or connected at one end.

The circumferential connection between the plug 5 and the socket 6 can be achieved through the following structure: the opening side width of the socket 6 is smaller than the maximum width of the plug 5 located in the socket 6, and the plug 5 will not detach from the socket 6 when only subjected to circumferential force. . In this solution, except for the clamp jaw 3 which needs to be sharp or pointed in order to clamp tissue to close wounds or stop bleeding, other structures will be rounded to reduce the damage to human tissue and avoid sharp angles or end faces. The inner surface of the socket 6 in this embodiment is a curved surface, and the plug 5 and the socket 6 have the same shape, so the opening width of the socket 6 is smaller than the diameter of the plug 5 .

In another embodiment not shown, the socket 6 does not penetrate the circumferential outer surface or the inner circumferential surface of the annular structure, and the plug 5 is stuck into the socket 6. At this time, the plug 5 and the socket 6 need to be staggered in the thickness direction. space, so that the plug 5 can move along the thickness direction and release the buckling relationship with the socket 6. In order to make the plug 5 easier to pull, it is preferred that the socket 6 extends to the circumferential outer surface of the annular structure, so that the outer surface of the plug 5 can be The surface is exposed. At this time, as long as the plug 5 is pulled outward, the plug 5 can move outward and disengage from the socket 6.

The connector in this embodiment includes a snap ring 8 and a first binding wire 19, but the snap ring 8 and the first binding wire 19 do not need to be disposed at the same time at the connection ends between each group of closed clamp segments 1 connected in pairs. On the above, the medical closure clip forming an annular structure only needs to be arranged on one of the closure clip segments 1 connected in pairs, while the other remaining connection ends are only connected through the plug 5 and the socket 6, and then further , a snap ring 8 can be set for reinforcement. The snap ring 8 can be a ring made of nickel-titanium alloy material. The snap ring 8 is sleeved on the connecting end of the closing clip part 1, and the snap ring 8 is an annular structure that can be circumferentially broken and deformed under the action of external force, for example The snap ring 8 in this embodiment is a circumferentially disconnected open ring, that is, the snap ring 8 has a notch 801 (as shown in FIG. 6 ), rather than a closed annular structure. One end of the first binding wire 19 is connected to the snap ring. 8. The other end of the first binding wire 19 is connected to the plug 5. The first binding wire 19 can be a medical grade PE suture. The first binding wire 19 can be riveted to the snap ring 8 and the plug 5, or it can be riveted between the plug 5 and the snap ring 8. Small holes are processed on the upper part, and both ends of the first binding wire 19 are tied to the corresponding small holes. In another embodiment not shown, the snap ring 8 can also be a closed annular structure, and a weak connection area is provided on the snap ring 8. The weak connection area can be circumferentially broken under the action of external force. The weak connection area It can be a blind groove cut in the circumferential direction, so that the snap ring 8 is easily broken and deformed at the blind groove when it is pulled by external force.

When it is necessary to remove the medical closure clip, after the endoscope enters the human body cavity, a surgical instrument with pulling ability such as a removal hook or a sampling forceps is inserted through the hole of the endoscope forceps channel. In this embodiment, the removal hook is used For example, when the first binding wire 19 is hooked and pulled backward, the first binding wire 19 drives the snap ring 8 to deform (the notch 801 part or the blind groove is easy to open), causing the snap ring 8 to detach from the connecting end, and then further apply Pulling force, the first binding wire 19 further drives the plug 5 to detach from the socket 6, causing the clamping relationship between the two to fail, thereby causing the fixed connection structure where the deformed snap ring 8 is located to fail (as shown in Figure 8), which can then be used for medical purposes. The two originally connected connecting ends of the closure clip are separated to release the clamping state, and finally the extraction hook, endoscope and medical closure clip are withdrawn from the human body together.

In addition, in order to prevent the snap ring 8 from moving circumferentially, a limiting groove 16 can be provided on the outer periphery of one of the connecting ends, and the snap ring 8 can be caught in the limiting groove 16 . Since the width of the connecting end on the side where the plug 5 is located is smaller than the width of the side where the socket 6 is located, in this embodiment, the limiting groove 16 is preferentially provided at the connecting end on the side where the socket 6 is located, thus forming a ring-shaped structure. Finally, after the snap ring 8 is installed, the socket 6 and the plug 5 can be bound by the snap ring 8. In this embodiment, since the first binding wire 19 is connected to the plug 5, the plug 5 can be easily pulled outward under the pulling force of the first binding wire 19, so the socket 6 can penetrate the closing clip portion 1 along the thickness direction. The connecting end (the thickness direction refers to the radial direction of the annular structure), that is, the plug 5 can be in contact with human tissue. When the human tissue expands, an outward thrust can be exerted on the plug 5; the socket 6 can also have a different thickness direction. Penetration only extends to the outer peripheral surface of the connecting end. At this time, the plug 5 does not contact the human tissue. The connecting component 18 only contacts the human tissue on the inner peripheral surface of one of the connecting ends. Therefore, the human tissue cannot directly exert thrust on the plug 5. At this time, It is necessary to make the plug 5 move outward through external force, so as to disconnect the plug 5 from the socket 6 .

In other optional embodiments, the inner surface of the socket 6 may also be a rectangular surface, in which case the opening width of the socket 6 is smaller than the width of the plug 5 located in the socket 6 .

Embodiment 2

As shown in Figure 9, the connector in this embodiment is a ring 9 that is wrapped around the outer circumference of the annular structure. The ring 9 is an annular structure wrapped around the annular periphery of the annular structure, and is used to fix the plug 5 and the socket. 6, when the medical closure clip needs to be taken out, only a surgical instrument with pulling or pushing capabilities such as a removal hook or a sampling forceps is used to push or pull the clasp 9 so that the clasp 9 is in contact with the annular shape. Structural detachment, since there is no member to pull the plug 5 in this embodiment, when the socket 6 penetrates the connection end of the closing clip part 1 along the thickness direction, the plug 5 and the socket 6 can be detached from the buckle through the expansion force of human tissue. relationship; when the socket 6 only extends to the outer peripheral surface of the connection end, it is necessary to push the plug 5 by taking out the hook, so that the plug 5 and the socket 6 are separated from the fastening relationship.

Embodiment 3

The connector in this embodiment is a C-shaped circlip 10 that is sleeved on the connecting component 18. Specifically, the open side of the C-shaped circlip 10 clamps the inner and outer surfaces of the connecting component 18 along the longitudinal axis of the connecting end, as shown in Figure 10 and 11, the connecting component 18 is sandwiched between two opposite surfaces of the C-type circlip 10; the C-type circlip can be taken out in the same way as in Embodiment 2, that is, using a pulling hook or sampling pliers or the like. A surgical instrument with push capability is used to push or pull the C-type circlip 10 to disengage the C-type circlip 10 from the annular structure, thereby separating the plurality of closing clip segments 1 that were originally engaged with each other through the claws 3, which facilitates surgery. or take it out.

Embodiment 4

The connecting piece in this embodiment is a sleeve 11 set on the connecting component 18. Specifically, the sleeve 11 can be inserted into the connecting end before the two adjacent connecting ends are connected. After the connecting ends are connected, Move the sleeve 11 so that the two adjacent connecting ends are wrapped by the sleeve 11 on the outside. As shown in Figures 12 and 13, the sleeve 11 is a closed-loop structure, which completely wraps around the connection component 18. When it is necessary to remove the medical closure clip, the sleeve 11 is pushed to move on the circumference of the annular structure. , until the connecting component 18 is exposed, the plug 5 is not restricted by the sleeve 11, so that the ring structure can spring open. The detachment method of the plug 5 and the socket 6 in this embodiment is the same as that in the second embodiment.

The connectors in Embodiments 2 to 4 can also be made of bioabsorbable medical materials. After a certain period of time, the connectors can automatically disappear, thereby releasing the constraint of the connector assembly 18 .

Embodiment 5

The connector in this embodiment is a second binding wire 12 connecting the plug 5 and the connecting end adjacent to the plug 5 . The material of the second binding wire 12 is the same as that of the first binding wire 19. As shown in Figure 14, small holes can be respectively provided on the plug 5 and the connecting end adjacent to the plug 5. Both ends of the second binding wire 12 are tied to On the two small holes, the second binding wire 12 is located on the outer periphery of the plug 5, which is convenient for pulling outward. When the medical closure clip needs to be taken out, the removal hook is used to pull the second binding wire 12, and the plug 5 is in the second binding position. The wire 12 can move outward under the pulling force. At this time, the socket 6 can penetrate the closure clip portion 1 along the thickness direction, or can only extend to the outer peripheral surface of the closure clip portion 1 .

In other optional embodiments, the second binding wire 12 can also be connected to the plug 5 and the connecting ends adjacent to the plug 5 through a union joint. When the second binding wire 12 is pulled, the second binding wire 12 When the union joint is loosened, when the socket 6 passes through the connection end of the closing clamp part 1 along the thickness direction, the plug 5 can be pulled by the expansion force of human tissue or the traction force from surgical instruments with pulling capabilities such as extraction hooks or sampling forceps. When the socket 6 is a blind groove opened on the outer or inner peripheral surface of the connecting end (that is, it does not penetrate the peripheral wall of the closed clamp part 1), it can be pulled by a hook or a sampling forceps, etc. The traction force of the surgical instrument drives the plug 5 or the socket 6, causing the connection relationship between the plug 5 and the socket 6 to fail. Similarly, the second binding wire 12 can also be made of bioabsorbable medical materials.

Embodiment 6

The connecting component 18 in this embodiment has two lugs 13 protruding from the surface of the connecting end along both sides of the axial direction of the annular structure. The connecting member is a third connecting lug 13 connecting the opposite lugs 13 on adjacent connecting ends. Three tied lines14. The third binding wire 14 is made of the same material as the first binding wire 19 and the second binding wire 12. As shown in Figure 15, there are lugs 13 above and below the connecting end, and a concave lugs 13 are formed between the lugs 13 and the connecting end. The third binding wire 14 is wrapped around the wrapping portion 17 of the arm 13 . Both the upper and lower sets of lugs 13 are wrapped with third binding wires 14. The connection component 18 in this embodiment can be constrained only by the third binding wire 14. The socket 6 and the plug 5 do not need to be fastened, as long as the plug 5 is inserted into the socket. 6. When taking out the medical closure clip, use the take-out hook to pull the third binding wire 14 to loosen the third binding wire 14 (the two ends of the third binding wire 14 can be loosely connected and can be loosened by pulling). The constraints of the connecting assembly 18 are released and the ring structure springs open.

In other optional embodiments, two or more closure clip segments 1 may be connected end to end to form a medical closure clip.

As shown in Figures 16 to 18, the present invention also provides a medical closing clip, which includes at least two closing clip parts 1. The closing clip parts 1 include interconnected connecting ends and clamping ends, each of which The connecting ends of the closing clip segments are connected end to end to form a ring structure 15; the clamping end is provided with a clamping jaw 3. After the closing clamp segment 1 is assembled into the medical closing clamp, the clamping jaws 3 can interact with each other in a natural state. Engagement; the clamping claw 3 is made of shape memory material, and the clamping cap 21 (medical transparent mucosal suction cap) is a commonly used accessory for endoscopic treatment, and is widely used to assist hemostasis treatment, foreign body removal, magnifying endoscopy, and improving tangent lines Endoscopic imaging observation of lesions in difficult-to-locate and observe locations. Referring to Figure 7, before the actual operation, the clamping cap 21 (medical transparent mucosal suction cap) is placed on the outer peripheral side of the front end of the lens of the endoscope, and the medical closing clip will be loaded on the clamping cap 21. At this time, the clip The claw 3 will be opened by the clamping cap 21, and the medical closing clip can follow the endoscope into the human body cavity. After the medical closing clip is released to the target tissue, due to the shape memory properties, the clamping claw 3 will return to its original shape, thus The clamping claws 3 of the multiple closing clip parts 1 are meshed with each other to firmly clamp the target tissue to achieve the purpose of closing the wound and stopping bleeding; the medical closing clip also includes a connector that connects two adjacent connecting ends, and the The connecting piece can be separated from at least one of the connecting ends under the action of external force. The connecting piece is used to connect two adjacent closing clip parts to maintain the structure of the ring structure 15 . In the present invention, the connecting ends of adjacent closing clip parts 1 can be connected through a plane. As shown in Figure 2, the connection between adjacent closing clip parts 1 is a line.

When it is necessary to remove the medical closure clip, as long as the connecting piece is removed, under the expansion of human tissue or the slight pulling force during the operation, the medical closure clip can be decomposed into multiple separate closure clip parts, which can be dismantled and taken out. The medical closing clip will not cause pulling damage to human tissue during the process.

The following is a detailed description of two embodiments of medical closure clips for different connectors:

Embodiment 7

As shown in Figures 16, 17 and 18, the present invention provides a medical closure clip, which is formed by two closure clip sections 1 connected end to end; the connecting ends of the two closure clip sections 1 are connected to each other. are connected to form a ring structure 15, and the clamping ends of the two closed clamp parts 1 mesh with each other; the clamping jaws 3 are made of shape memory material, such as nickel-titanium alloy. In the natural state, the two clamping jaws 3 mesh to clamp human tissue. , under the action of external force, the two clamping jaws 3 open, and the natural state refers to a state without external force.

The connector in this embodiment is a ring 9 that is placed on the outer circumference of the annular structure 15 . The ring 9 is an annular structure wrapped around the annular periphery of the annular structure 15 , and is used to limit the outward expansion of the closing clip portion, so that The connecting end of the closing clamp part remains in an arc-shaped state. When the medical closing clamp needs to be taken out, after the endoscope enters the human body cavity, a retrieval hook or sampling forceps, etc., are inserted through the endoscope forceps channel hole and have a pulling force. A surgical instrument with the ability to pull or push is used to push or pull the ring 9 to separate the ring 9 from the annular structure 15, thereby separating the two originally connected connecting ends of the medical closure clip to release the clamping state, and finally the The hook, endoscope and medical closure clip are removed from the body together.

In this solution, except for the clamp jaw 3 which needs to be sharp or pointed end face in order to clamp tissue to close wounds or stop bleeding, other structures will be rounded to reduce the damage to human tissue and avoid sharp angles or end faces.

The hugging ring 9 in this embodiment can also be made of bioabsorbable medical materials. After a certain period of time, the hugging ring 9 can automatically disappear, thereby releasing the constraints of the hugging ring 9 .

Embodiment 8

This embodiment is also composed of two closing clip parts 1. Both ends of the connecting end of each closing clip part 1 have lugs 13 protruding along both sides of the axial direction of the annular structure 15. The connecting parts are The turns 20 of the corresponding lugs 13 on adjacent connecting ends are connected. The wire turns 20 can be made of medical-grade PE sutures, as shown in Figures 17 and 18. There are lugs 13 above and below the connecting end. A recessed winding portion 17 is formed between the lugs 13 and the connecting end. The wire turns 20 It is wrapped around the lug 13 and located in the wrapping part 17 . The two sets of upper and lower lugs 13 are wound with wire turns 20. When taking out the medical closure clip, use the take-out hook to pull the wire turns 20 to loosen the wire turns 20 (the two ends of the wire turns 20 can be loosely connected and can be loosened by pulling) ), thereby releasing the constraint of the wire turns 20, and the annular structure 15 springs open. In addition, the wire turns 20 can also be made of bioabsorbable medical materials.

In this embodiment, the two ends of the two closing clip parts 1 are provided with connectors, respectively located at the left and right lugs 13 shown in Figure 18. When taking out the medical closing clip, only one of the ends can be removed. At this time, the other ends of the two closing clamp parts 1 are still connected to each other, or both connecting parts are removed, so that the annular structure 15 is separated. The medical closure clip is decomposed into two independent closure clip parts 1, and then the extraction hook is used to remove these closure clip parts 1 that are separated or connected at one end.

In this specification, schematic expressions of the terms are not necessarily referring to the same embodiment. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments.

Taking the above-mentioned ideal embodiments of the present invention as inspiration and through the above description, relevant workers can make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the description, and must be determined based on the scope of the claims.

Claims

A medical closing clip, characterized in that: the medical closing clip is assembled from at least two closing clip parts (1), and the closing clip part (1) includes a connecting end and a clamping end connected to each other, The connecting ends are connected through connecting components to form a ring structure; the clamping end is provided with a clamping claw (3), and after the closing clip part (1) is assembled into the medical closing clip, the The clamping jaws (3) can mesh with each other; the clamping jaws (3) are made of shape memory material;

The connection assembly (18) includes a socket (6) located at the connecting end of one of the closing clip portions (1) and a plug (5) located at the connecting end of the adjacent other closing clip portion (1). The plug (5) Suitable for insertion into the socket (6);

The connection assembly (18) also includes a connection piece disposed between at least one of the two interconnected connection ends. When the connection piece is separated from at least one of the connection ends, the plug (5) can be separated from the socket (6). ).
The medical closing clip according to claim 1, characterized in that the adjacent plugs (5) and sockets (6) are connected to each other along the circumferential direction.
The medical closure clip according to claim 2, characterized in that the width of the side opening of the socket (6) is smaller than the maximum width of the plug (5) located in the socket (6).
The medical closure clip according to claim 2, characterized in that the socket (6) extends to the circumferential outer surface of the annular structure.
The medical closure clip according to claim 4, characterized in that the socket (6) penetrates the closure clip segment (1) along the thickness direction.
The medical closure clip according to any one of claims 1 to 5, characterized in that: the connecting member includes a snap ring (8) and a first binding wire (19), and the snap ring (8) is sleeved on the closure At the connecting end of the clamping part (1), the snap ring (8) is an annular structure that can be circumferentially broken and deformed under the action of external force. One end of the first binding wire (19) is connected to the snap ring (8) and the first Connect the other end of the binding wire (19) to the plug (5).
The medical closure clip according to any one of claims 1 to 5, characterized in that: the connecting member is a ring (9) that is placed on the outer peripheral surface of the annular structure or is placed on the connecting component (18) A C-shaped circlip (10) or a sleeve (11) sleeved on the connecting component (18).
The medical closure clip according to claim 7, wherein the connecting piece is made of bioabsorbable medical material.
The medical closure clip according to any one of claims 1 to 5, characterized in that the connecting member is a second binding wire (12) connecting the plug (5) and the connecting end adjacent to the plug (5).
The medical closure clip according to claim 9, characterized in that the second binding wire (12) is made of bioabsorbable medical material.
The medical closure clip according to claim 1, characterized in that the connecting component (18) has two connecting end surfaces protruding along both sides of the annular structure in the axial direction. The connecting piece is a third binding wire (14) that connects opposite lugs (13) on adjacent connecting ends.
The medical closure clip according to claim 11, characterized in that: a recessed winding portion (17) is formed between the lug (13) and the connecting end, and the third binding wire (14) is wound around the The winding part (17) of the lug (13).
The medical closure clip according to claim 6, characterized in that the snap ring (8) is a circumferentially broken open ring.
The medical closing clip according to claim 6, characterized in that: the clasp (8) is a closed annular structure, and a weak connection area is provided on the clasp (8), and the weak connection area can be circumvented under the action of external force. towards fracture.
A medical closing clip, characterized in that: the medical closing clip is made up of at least two closing clip parts (1), and the closing clip part (1) includes a connecting end and a clamping end that are connected to each other, The connecting ends of each closed clamp segment (1) are connected end to end to form a ring structure; the clamping end is provided with a clamping claw (3), and the clamping claw (3) is made of shape memory material , the jaws (3) of the medical closing clip mesh with each other in the natural state;

The fastening part (4) of the annular structure includes a socket (6) located in one of the closing clip portions (1) and a plug (5) located in the adjacent other closing clip portion. The plug (5) Suitable for insertion into the socket (6);

The plug (5) is connected with a pulling wire (7). When the pulling wire (7) is pulled, the plug (5) and the socket (6) that are connected to each other can be separated.
The medical closing clip according to claim 15, characterized in that the inner surface of the socket (6) is an arc surface or a rectangular surface.
The medical closure clip according to claim 15, characterized in that the pulling wire (7) is located on the outer surface of the plug (5).
The medical closing clip according to any one of claims 15 to 17, characterized in that: the plug (5) has two penetrating holes (2), and the two ends of the pulling wire (7) are connected to each other. said threading holes (2).
The medical closure clip according to claim 15, characterized in that the socket (6) does not extend to the circumferential inner surface of the annular structure.
The medical closure clip according to claim 15, characterized in that the socket (6) extends to the circumferential outer surface of the annular structure.
A medical closing clip, characterized in that: it is composed of at least two closing clip parts (1). The closing clip part (1) includes a connecting end and a clamping end connected to each other. Each of the closing clip parts (1) The connecting ends of the clamping parts (1) are connected end to end to form a ring structure (15); the clamping end is provided with a clamping claw (3), and the clamping claw (3) is made of shape memory material; the After the closing clip parts (1) are assembled into the medical closing clip, the jaws (3) can mesh with each other in a natural state;

The medical closure clip also includes a connecting piece connecting two adjacent connecting ends, and the connecting piece can be separated from at least one of the connecting ends under the action of external force.
The medical closing clip according to claim 21, characterized in that the connecting member is a ring (9) that is placed on the outer peripheral surface of the annular structure (15).
The medical closure clip according to claim 22, characterized in that the clasp (9) is made of bioabsorbable medical material.
The medical closing clip according to claim 21, characterized in that: the connecting end has an ear (13) protruding along at least one side of the axial direction of the annular structure (15), and the connecting piece is a connecting member. Turns (20) of corresponding lugs (13) on adjacent connecting ends.
The medical closing clip according to claim 24, characterized in that: a recessed winding portion (17) is formed between the lugs (13) and the connecting end, and the wire turns (20) are wound around the lugs (13). The wrapping part (17) of the ear (13).
The medical closure clip according to claim 24, characterized in that: the turns (20) are medical grade PE sutures.
The medical closure clip according to claim 24, characterized in that: the wire turns (20) are made of bioabsorbable medical materials.