Tissue closure clip
By setting multiple elastic member connection points in the tissue closure clip, the problem of poor clamping force of the closing clip in the prior art is solved, and a more stringent tissue closure effect is achieved.
Patent Information
- Application Number
- CN202311807499.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-26
- Publication Date
- 2025-06-27
AI Technical Summary
In the prior art, the single-end opening closure clamp with insufficient constraints on the clamp arm, which easily leads to poor clamping force, resulting in poor tissue closure.
A tissue closure clip is designed, by setting two elastic members and setting multiple connection points between the elastic members and the clamping arm to form multiple force points to ensure that pressure is applied to multiple places of the clamping arm, thereby improving the compression closure tightness of the clamping arm.
By setting connection points at intervals, the compression closure of the clamping arm is improved, ensuring that the target tissue is clamped, and solving the problem of poor tissue closure in the prior art.
Smart Images
Figure CN120203671A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of medical devices, and particularly relates to a tissue closure clip. Background Art
[0002] Clinically, it is often necessary to use closure clips to clamp or block tissues, such as using closure clips to close vascular tissues, valve tissues, atria, left atrial appendages, etc. In this process, a special delivery device is required to deliver the closure clip into the human body and open it to capture the target tissue, so that the target tissue is clamped in the closure clip to complete the closure.
[0003] In the prior art, a single-ended open closure clip usually uses a structure in which the clip arm and a unilateral elastic member are integrated to achieve clamping. Such a closure clip is prone to poor clamping force at the proximal part due to insufficient restraint on the clip arm, and in severe cases, it may cause the problem of incomplete tissue closure. Summary of the Invention
[0004] The purpose of the present invention is to at least solve the problem of incomplete tissue closure of the existing closure clip. This purpose is achieved through the following technical solutions:
[0005] The present invention provides a tissue closure clip, which includes:
[0006] A first clip arm;
[0007] A second clip arm, which is parallel to the first clip arm and elastically contacts the first clip arm under the initial working condition;
[0008] A first elastic member, with a first connection position and a second connection position provided at the distal end of the first elastic member. The first connection position is connected to the first clip arm, and the second connection position is connected to the second clip arm;
[0009] A second elastic member, with a third connection position and a fourth connection position provided at the distal end of the second elastic member. The third connection position is connected to the first clip arm, the fourth connection position is connected to the second clip arm, the third connection position is spaced from the first connection position, and / or the fourth connection position is spaced from the second connection position.
[0010] The tissue closure clip proposed according to the embodiments of the present invention has a first clip arm and a second clip arm oppositely arranged on both sides for clamping tissue. A first elastic member and a second elastic member are respectively connected to the first clip arm and the second clip arm, and at least one side of the connection points of the first elastic member and the second elastic member with the clip arms is arranged at intervals. That is to say, multiple force application points are formed by arranging the connection points at intervals, ensuring that pressure is applied to multiple parts of the first clip arm and the second clip arm. Therefore, in the tissue closure clip proposed according to the embodiments of the present invention, the end portions of the first elastic member and the second elastic member are arranged at intervals, which improves the tightness of the compression closure of the first clip arm and the second clip arm, and further ensures that the target tissue therein can be clamped tightly, solving the problem of loose tissue closure in the prior art.
[0011] In addition, the tissue closure clip proposed according to the embodiments of the present invention may further have the following technical features:
[0012] In some embodiments of the present invention, the first connection position is located on the distal side of the third connection position, and the second connection position is located on the distal side of the fourth connection position.
[0013] In some embodiments of the present invention, the first connection position is connected to a position near the distal end of the first clip arm or an intermediate position of the first clip arm.
[0014] In some embodiments of the present invention, the first connection position and the second connection position are symmetrically arranged, and / or the third connection position and the fourth connection position are symmetrically arranged.
[0015] In some embodiments of the present invention, the first connection position and the third connection position are respectively connected to both sides of the first clip arm, and the second connection position and the fourth connection position are respectively connected to both sides of the second clip arm.
[0016] In some embodiments of the present invention, the first elastic member and the second elastic member are arranged as an integrally formed structure.
[0017] In some embodiments of the present invention, at least one of the first elastic member and the second elastic member is provided with a reinforcement structure, and the reinforcement structure is fixedly connected to the first clip arm and / or the second clip arm.
[0018] In some embodiments of the present invention, the first clip arm and the second clip arm are respectively provided with a limiting structure, and the limiting structure cooperates with the first elastic member and the second elastic member.
[0019] In some embodiments of the present invention, the first elastic member is arranged to be hinged or fixedly connected to the first clip arm and the second clip arm, and the second elastic member is arranged to be hinged or fixedly connected to the first clip arm and the second clip arm.
[0020] In some embodiments of the present invention, the first clamping arm and the second clamping arm are provided as polymer material clamping arms. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Moreover, throughout the drawings, the same reference numerals are used to denote the same components. In the drawings:
[0022] Figure 1 is a schematic structural view of the tissue closing clip Figure 1 ;
[0023] Figure 2 is Figure 1 a schematic structural view of the shown tissue closing clip in the unclosed state;
[0024] Figure 3 is a schematic structural view of the tissue closing clip Figure 2 ;
[0025] Figure 4 is a schematic structural view of the tissue closing clip Figure 3 ;
[0026] Figure 5 is a schematic structural view of the tissue closing clip Figure 4 ;
[0027] Figure 6 is a schematic structural view of the tissue closing clip Figure 5 ;
[0028] Figure 7 is a schematic structural view of the tissue closing clip Figure 6 ;
[0029] Figure 8 is a schematic structural view of the tissue closing clip Figure 7 ;
[0030] Figure 9 is Figure 8 an axonometric view of the shown tissue closing clip in the unclosed state;
[0031] Figure 10 is Figure 9 a schematic structural view of an elastic member in the shown tissue closing clip;
[0032] Figure 11 is Figure 9 another schematic structural view of an elastic member in the shown tissue closing clip;
[0033] Figure 12 is a schematic structural view of the tissue closing clipFigure 8 ;
[0034] Figure 13 Structural schematic of the tissue closure clip Figure 9 ;
[0035] Figure 14 Structural schematic of the tissue closure clip Figure 10 ;
[0036] Figure 15 Structural schematic of the tissue closure clip Figure 10 One;
[0037] Figure 16 Structural schematic of the tissue closure clip Figure 10 Two;
[0038] Figure 17 Structural schematic of the tissue closure clip Figure 10 Three;
[0039] Figure 18 Structural schematic of the tissue closure clip with a sleeve. Detailed implementation manners
[0040] As described in the background art, for the unidirectionally opened closure clip in the prior art, due to insufficient restraint on the clip arms, especially on the proximal ends of the clip arms, the clamping force of the clip arms is likely to be poor, resulting in the problem of incomplete tissue closure. In view of this, the embodiments of the present invention propose a tissue closure clip. By providing two elastic members and setting more than two connection points between the elastic members and the clip arms, the tightness of the first clip arm and the second clip arm when pressed is improved, and then the target tissue clamped therein is forced to close, solving the problem of incomplete closure in the prior art.
[0041] Next, the accompanying drawings in the embodiments of the present invention will be referred to. The terms used herein are only for the purpose of describing specific exemplary embodiments and should not be construed as limiting the present invention. For example, the terms "include" and "have" not only indicate the presence of the stated features but also do not exclude the presence of other features; the terms "first" and "second" do not imply an order or sequence; the terms "inside", "outside", "above", and "below" are only for facilitating the description of the relationship of one feature shown in the drawings relative to another feature and do not indicate that it must have a specific orientation. It should be noted that in the field of interventional medical devices, the proximal end refers to the end closer to the operator, and the distal end refers to the end farther from the operator; the axial direction refers to the direction parallel to the line connecting the centers of the distal end and the proximal end of the medical device in its natural state. In the description of the present invention, the above definitions are only for convenience of expression and should not be construed as limiting the present invention.
[0042] Please refer to Figure 1 and Figure 2, an embodiment of the present invention provides a tissue closure clip 100, which includes a first clip arm 10, a second clip arm 20, a first elastic member 30, and a second elastic member 40. The second clip arm 20 is parallel to the first clip arm 10 and elastically contacts the first clip arm 10 under the initial working condition; the distal end of the first elastic member 30 is provided with a first connection position 31 and a second connection position 32. The first connection position 31 is connected to the first clip arm 10, and the second connection position 32 is connected to the second clip arm 20; the distal end of the second elastic member 40 is provided with a third connection position 41 and a fourth connection position 42. The third connection position 41 is connected to the first clip arm 10, and the fourth connection position 42 is connected to the second clip arm 20. The third connection position 41 is spaced from the first connection position 31, and / or the fourth connection position 42 is spaced from the second connection position 32.
[0043] In the tissue closure clip 100 provided by the embodiment of the present invention, the first clip arm 10 and the second clip arm 20 are oppositely arranged on both sides for clamping tissue. The first elastic member 30 and the second elastic member 40 are respectively connected to the first clip arm 10 and the second clip arm 20, and at least one side of the connection points of the first elastic member 30 and the second elastic member 40 with the clip arms is spaced. The spaced arrangement can be along the length direction of the tissue closure clip 100, or along the length and width directions of the tissue closure clip 100. For example, the first connection position 31 and the third connection position 41 are spaced along the length direction, or the second connection position 32 and the fourth connection position 42 are spaced along the length direction, or, while the first connection position 31 and the third connection position 41 are spaced along the length direction, the second connection position 32 and the fourth connection position 42 are also spaced along the length direction, or, while the first connection position 31 and the third connection position 41 are spaced along the width direction, the second connection position 32 and the fourth connection position 42 are also spaced along the width direction.
[0044] It can be understood that in this embodiment, there are two force application points provided on at least one side of the first clip arm 10 and the second clip arm 20, ensuring that the first elastic member 30 and the second elastic member 40 act on the first clip arm 10 (or the second clip arm 20) together, so as to apply pressure to the first clip arm 10 (or the second clip arm 20) simultaneously. Therefore, in the tissue closure clip 100 provided by the embodiment of the present invention, the arrangement of the first elastic member 30 and the second elastic member 40 improves the tightness of the first clip arm 10 and the second clip arm 20 when being closed by force, and further can clamp the target tissue therein, solving the problem of loose tissue closure in the prior art.
[0045] Such as Figure 1 and Figure 2As shown in the figure, in this embodiment, the first elastic member 30 of the tissue closure clip 100 is respectively connected to the first clip arm 10 and the second clip arm 20, and the second elastic member 40 is also respectively connected to the first clip arm 10 and the second clip arm 20, thereby constructing a tissue closure clip 100 with a single-end opening. As the first connection position 31 and the second connection position 32 in the first elastic member 30 move away from and close to each other, and the third connection position 41 and the fourth connection position 42 in the second elastic member 40 move away from and close to each other, the first clip arm 10 and the second clip arm 20 can be opened and closed.
[0046] In this embodiment, the elastic members and clip arms in the tissue closure clip 100 can be made of elastic materials with good biocompatibility, such as medical stainless steel, nitinol alloy, titanium alloy (such as TC4, TC20), etc., by wire cutting, electric discharge machining, machining and other methods. On this basis, the first elastic member 30 and the second elastic member 40 can be connected to the first clip arm 10 and the second clip arm 20 by welding or other methods. Alternatively, in some embodiments of the present invention, the first elastic member 30 and the second elastic member 40 are made of the above-mentioned metal materials, and the first clip arm 10 and the second clip arm 20 are set as polymer material clip arms, that is, made of polymer materials. It can be understood that in this embodiment, the elastic member and the clip arm are not set as an integral structure, which reduces the limitation on the material selection of the first clip arm 10 and the second clip arm 20. When both the first clip arm 10 and the second clip arm 20 are made of polymer materials, it is not only beneficial to reduce the processing difficulty, but also beneficial to reduce the overall weight of the tissue closure clip 100.
[0047] As Figure 2 shown, the tissue closure clip 100 is in an unclosed state. During the processing of the tissue closure clip 100, after the first elastic member 30, the second elastic member 40 are connected to the first clip arm 10 and the second clip arm 20, the first elastic member 30 and the second elastic member 40 can be plastically deformed by heat treatment or physical methods, so that the first clip arm 10 moves closer to the second clip arm 20 until the first clip arm 10 and the second clip arm 20 are in contact. In this embodiment, the shapes of the first elastic member 30 and the second elastic member 40 can be set as U-shaped. It should be noted that the elastic contact between the first clip arm 10 and the second clip arm 20 in this embodiment means that the two are in close contact and can provide pressure to each other under the initial working conditions, so that when clamping the target tissue, the target tissue can be clamped according to the thickness of the target tissue.
[0048] Further, please continue to refer to Figure 1 and Figure 2, in this embodiment, the proximal end of the first elastic member 30 is set as a closed end, the distal end is set as an open end, and the open end includes two ends, a first connection position 31 and a second connection position 32. The first connection position 31 is connected to the first clamping arm 10, and the second connection position 32 is connected to the second clamping arm 20. Thus, the first elastic member 30 can drive the first clamping arm 10 and the second clamping arm 20 to approach or move away from each other through opening and closing. Similarly, the proximal end of the second elastic member 40 is set as a closed end, the distal end is set as an open end, and the open end includes two ends, a third connection position 41 and a fourth connection position 42. The third connection position 41 is connected to the first clamping arm 10, and the fourth connection position 42 is connected to the second clamping arm 20. Thus, the second elastic member 40 can also drive the first clamping arm 10 and the second clamping arm 20 to approach or move away from each other through opening and closing. In this embodiment, the first elastic member 30 and the second elastic member 40 act together on the first clamping arm 10 and the second clamping arm 20.
[0049] Based on the above implementation manner, there are various connection manners between the first elastic member 30 and the second elastic member 40 and the first clamping arm 10 and the second clamping arm 20. Exemplarily, in some embodiments of the present invention, the first connection position 31 is hinged or fixedly connected to the first clamping arm 10, and the second connection position 32 is hinged or fixedly connected to the second clamping arm 20. Correspondingly, in some embodiments of the present invention, the third connection position 41 is hinged or fixedly connected to the first clamping arm 10, and the fourth connection position 42 is hinged or fixedly connected to the second clamping arm 20. This embodiment does not make specific limitations, and can be selected according to actual needs and the structures and materials of each part of the tissue closing clip 100.
[0050] Further, taking the connection manner between the first elastic member 30 and the first clamping arm 10 and the second clamping arm 20 as an example for description, when the first connection position 31 and the first clamping arm 10, and the second connection position 32 and the second clamping arm 20 are set to be hinged, in an optional implementation manner, connection structures can be respectively provided on the first clamping arm 10 and the second clamping arm 20, for example, they can be connection holes or connection grooves, etc. The first connection position 31 and the second connection position 32 are respectively provided with rotating shaft structures that can be inserted into the connection structures. Thus, the rotating shaft structure of the first connection position 31 cooperates with the connecting part of the first clamping arm 10, and the rotating shaft structure of the second connection position 32 cooperates with the connecting part of the second clamping arm 20. When the distal end opening of the first elastic member 30 generates opening and closing according to elastic deformation, the first clamping arm 10 and the second clamping arm 20 move away from or close to each other along with its opening and closing.
[0051] It should be noted that, in the above implementation manner, there are various setting manners for the connection parts between the connecting parts and the clamping arms. Taking the first clamping arm 10 and the first connection position 31, and the third connection position 41 as an example, as Figure 1As shown, in an alternative embodiment, both the first connection position 31 and the third connection position 41 are connected to the side of the first clamping arm 10 facing away from the second clamping arm 20, that is, the top wall of the first clamping arm 10; in another alternative embodiment, the first connection position 31 and the third connection position 41 are spaced apart and connected to the same side wall of the first clamping arm 10; as Figure 9 shown, in another alternative embodiment, the first connection position 31 and the third connection position 41 are respectively connected to two side walls of the first clamping arm 10.
[0052] Exemplarily, taking the connection part being set as a connection hole as an example, as Figure 9 shown, the connection hole can be recessed or penetrate along the width direction of the first clamping arm 10 in the first clamping arm 10; alternatively, the connection hole can also be recessed or penetrate along the clamping direction in the first clamping arm 10. Correspondingly, the first connection position 31 and the second connection position 32 in the first elastic member 30 can cooperate with the connection hole according to the setting manner of the connection hole. This embodiment does not make specific limitations on this, as long as the first elastic member 30 and the second elastic member 40 are connected to the first clamping arm 10 and the second clamping arm 20, and the first clamping arm 10 and the second clamping arm 20 can clamp tissues with the opening and closing of the first elastic member 30 and the second elastic member 40.
[0053] In some embodiments of the present invention, as Figures 1 to 6 shown, the first elastic member 30 and the second elastic member 40 are spaced apart along the length direction of the tissue closure clip 100. Such a setting manner not only ensures the clamping force but also the uniformity of the clamping force in the length direction, avoiding the problem of uneven clamping. On the basis of the above embodiment, the first connection position 31 is located on the distal side of the third connection position 41, and the second connection position 32 is located on the distal side of the fourth connection position 42. That is to say, the first elastic member 30 is arranged on the distal side of the second elastic member 40. Thus, the first elastic member 30 generates a constraint on the first clamping arm 10 and the second clamping arm 20 at the distal end of the tissue closure clip 100. Relatively speaking, the second elastic member 40 generates a constraint on the first clamping arm 10 and the second clamping arm 20 at the proximal end of the tissue closure clip 100, so as to provide a uniform clamping force when the first clamping arm 10 and the second clamping arm 20 clamp tissues.
[0054] Furthermore, as Figure 1 and Figure 2 shown, in some embodiments of the present invention, the first connection position 31 is connected to the part of the first clamping arm 10 near the distal end. It should be noted that along the length direction of the first clamping arm 10, the part near the distal end in this embodiment can be any part between the distal end and the midpoint of the first clamping arm 10. As Figure 3As shown, in some other embodiments, the first connection position 31 is connected to the middle part of the first clamping arm 10. It should be noted that along the length direction of the first clamping arm 10, the middle part in this embodiment refers to the midpoint position of the first clamping arm 10, and may also include the part that is offset a short distance towards the proximal end from the midpoint. The specific offset dimension can be set according to actual needs, and this embodiment does not make specific limitations on this.
[0055] Based on the above embodiments, there are various ways to set the connection positions of the first connection position 31, the second connection position 32, the third connection position 41, and the fourth connection position 42 with the first clamping arm 10 and the second clamping arm 20. Exemplarily, Figures 1 to 3 , in an optional embodiment, the first connection position 31 and the second connection position 32 of the first elastic member 30 are symmetrically arranged, and at the same time, the third connection position 41 and the fourth connection position 42 of the second elastic member 40 are symmetrically arranged; Figure 4 As shown, in another optional embodiment, the first connection position 31 and the second connection position 32 of the first elastic member 30 are symmetrically arranged, and the third connection position 41 and the fourth connection position 42 of the second elastic member 40 are asymmetric; Figure 5 As shown, in another optional embodiment, the first connection position 31 and the second connection position 32 of the first elastic member 30 are asymmetric, and the third connection position 41 and the fourth connection position 42 of the second elastic member 40 are symmetrically arranged; Figure 6 and Figure 7 As shown, in another optional embodiment, the first connection position 31 and the second connection position 32 of the first elastic member 30 are asymmetric, and at the same time, the third connection position 41 and the fourth connection position 42 of the second elastic member 40 are also asymmetric.
[0056] Furthermore, in the length direction of the tissue closing clip 100, there is a first set distance between the third connection position 41 and the first connection position 31, and a second set distance between the fourth connection position 42 and the second connection position 32. In this embodiment, at least one of the values of the first set distance and the second set distance is greater than zero. On this basis, in an optional embodiment, Figures 1 to 6 As shown, both the first set distance and the second set distance are greater than zero. That is to say, in the length direction of the first clamping arm 10, the first connection position 31 and the third connection position 41 are arranged at intervals, and in the length direction of the second clamping arm 20, the second connection position 32 and the fourth connection position 42 are arranged at intervals, so as to ensure uniform force application in the length direction; in another optional embodiment, Figure 7As shown, the first set spacing is greater than zero, and the second set spacing is equal to zero. That is to say, the first connecting position 31 and the third connecting position 41 are spaced apart to ensure uniform force application, and the second connecting position 32 and the fourth connecting position 42 are connected to the same part of the second clamping arm 20; or in another embodiment, the first set spacing is equal to zero and the second set spacing is greater than zero. That is to say, the first connecting position 31 and the third connecting position 41 are connected to the same part of the first clamping arm 10, and the second connecting position 32 and the fourth connecting position 42 are spaced apart to ensure uniform force application.
[0057] Based on the above embodiments, the specific values of the first set spacing and the second set spacing can be adjusted according to the actual situation, such as Figure 4 and Figure 7 shown, in some embodiments of the present invention, the first set spacing is greater than the second set spacing; as Figure 5 shown, in other embodiments of the present invention, the first set spacing is less than the second set spacing.
[0058] Please refer to Figure 8 and Figure 9 , when the first connecting position 31 and the third connecting position 41 are spaced apart along the width direction of the tissue closing clip 100, the first connecting position 31 and the third connecting position 41 are respectively connected to two side walls of the first clamping arm 10. On this basis, the spacing between the first connecting position 31 and the third connecting position 41 in the length direction of the tissue closing clip 100 can be greater than zero, that is, the first elastic member 30 and the second elastic member 40 are respectively arranged on both sides of the clamping arm and are spaced apart in the length direction; or as Figure 9 shown, the spacing between the first connecting position 31 and the third connecting position 41 in the length direction of the tissue closing clip 100 is set to zero. That is to say, the first connecting position 31 and the third connecting position 41 are symmetrically arranged with respect to the first clamping arm 10. Correspondingly, the second connecting position 32 and the fourth connecting position 42 can also be symmetrically arranged with respect to the second clamping arm 20, that is, the first elastic member 30 and the second elastic member 40 are symmetrically arranged on both sides of the first clamping arm 10 (the second clamping arm 20). This embodiment does not make specific limitations on this.
[0059] Furthermore, in this embodiment, the first elastic member 30 and the second elastic member 40 can be set as an integrally formed structure, for example, it can be set as an elastic metal wire bending formed structure. In an alternative embodiment, as Figure 9 shown, when the first connecting position 31 and the third connecting position 41 are symmetric with respect to the first clamping arm 10 and the second connecting position 32 and the fourth connecting position 42 are symmetric with respect to the second clamping arm 20, the first elastic member 30 and the second elastic member 40 can be set as Figure 10The integrally formed structure shown is set to be bent and formed on the basis of a fully enclosed ring. At this time, the first connection position 31 is connected to the third connection position 41, and the second connection position 32 is connected to the fourth connection position 42; alternatively, it can also be set as shown in Figure 11 The integrally formed structure shown is set to be bent and formed on the basis of a semi-enclosed ring. It should be noted that even if the first connection position 31 and the third connection position 41 are asymmetric, and the second connection position 32 and the fourth connection position 42 are asymmetric, the first elastic member 30 and the second elastic member 40 can also be set as an integrally formed structure. In this embodiment, the specific shapes of the first elastic member 30 and the second elastic member 40 after being integrally formed are not limited and can be set according to actual situations.
[0060] On the basis of the above embodiments, in order to prevent unexpected rotation or displacement of the connection positions, and in order to further increase the pressure exerted by the first elastic member 30 and the second elastic member 40 on the first clamping arm 10 and the second clamping arm 20, the tissue closing clip 100 may further include at least one of a reinforcement structure 50 and a limiting structure. The setting of the reinforcement structure 50 and the limiting structure can further increase the clamping force, thereby avoiding the problem of incomplete tissue closure.
[0061] In an alternative embodiment, the first elastic member 30 and the second elastic member 40 may be provided with a reinforcement structure 50 for cooperating with the first clamping arm 10 and the second clamping arm 20. It can be understood that when the first clamping arm 10 and the second clamping arm 20 are made of a polymer material clamping arm, the first clamping arm 10 and the second clamping arm 20 can be connected to the first elastic member 30 and the second elastic member 40 by injection molding. In this embodiment, the setting of the reinforcement structure 50 can further strengthen the force exerted by the first elastic member 30 and the second elastic member 40 on the first clamping arm 10 and the second clamping arm 20, and at the same time prevent unexpected rotation or movement of the connection positions from affecting the stability of the structure.
[0062] In an embodiment of the present invention, taking the first elastic member 30 and the second elastic member 40 being integrally formed into an integral elastic member as an example, the reinforcement structure 50 can be provided at two distal ends of the integral elastic member. The reinforcement structure 50 is fixedly connected to the first clamping arm 10 and the second clamping arm 20, for example, it can be fixedly connected inside the first clamping arm 10 and the second clamping arm 20. Further, the shape of the reinforcement structure 50 can be plate-shaped, rod-shaped or ring-shaped. In this embodiment, the shape of the reinforcement structure 50 is not specifically limited.
[0063] Exemplarily, as shown in Figure 12As shown, taking the case where the first elastic member 30 and the second elastic member 40 are integrally formed into an integral elastic member as an example, the integral elastic member is arranged as a bent structure of elastic wire, and the reinforcement structure 50 is arranged as two extension parts 51 integrally formed at the distal end of the integral elastic member. The two extension parts 51 can be respectively connected to the inside of the first clamping arm 10 and the second clamping arm 20 during the injection molding process of the clamping arms, as Figure 12 The dotted parts at the distal ends of the first elastic member 30 and the second elastic member 40 in Figure 12 are the extension parts 51.
[0064] Exemplarily, the reinforcement structure 50 can also be arranged at the middle part of the first elastic member 30 and the second elastic member 40. For example, it can be arranged as a bent part 52 or a protruding part. The bent part 52 or the protruding part is fixedly connected to the first clamping arm 10 and the second clamping arm 20. For example, it can be connected to the inside of the first clamping arm 10 and the second clamping arm 20 during the injection molding process. Exemplarily, as Figure 13 shown, when the first elastic member 30 and the second elastic member 40 are an integral elastic member integrally formed, the reinforcement structure 50 is arranged as a bent part 52 located at the middle part of the integral elastic member. The bent part 52 can be connected to the inside of the first clamping arm 10 and the second clamping arm 20 during the clamping arm injection molding process, as Figure 13 The dotted part at the middle position of the first elastic member 30 and the second elastic member 40 in Figure 13 is the bent part 52.
[0065] Furthermore, in another alternative embodiment, the tissue closing clip 100 includes a limiting structure. On the basis of the above embodiment, when the first elastic member 30 and the second elastic member 40 are respectively connected to the side walls of the first clamping arm 10 and the second clamping arm 20, the limiting structure can be arranged on the first clamping arm 10 and the second clamping arm 20. The limiting structure is used to cooperate with the first elastic member 30 and the second elastic member 40, so as to ensure that the first elastic member 30 and the second elastic member 40 apply pressure to the first clamping arm 10 and the second clamping arm 20, and then clamp the target tissue. The setting of the limiting structure can also improve the uniformity of the clamping force of the tissue closing clip 100 in the length direction.
[0066] Exemplarily, please refer to Figures 14 to 17 , the limiting structure can include a plurality of bosses 61 arranged on the first clamping arm 10 and the second clamping arm 20. The bosses 61 are in contact with the first elastic member 30 and the second elastic member 40. The bosses 61 can limit the first elastic member 30 and the second elastic member 40 in the clamping direction, and improve the reaction force exerted by the first elastic member 30 and the second elastic member 40 on the first clamping arm 10 and the second clamping arm 20.
[0067] Taking the first clamping arm 10 and the first elastic member 30 as an example for description. In one embodiment, as Figure 14As shown, the boss 61 can be integrally formed on the side of the first clamp arm 10 and covered on a portion of the first elastic member 30, that is, the first elastic member 30 is inserted into the boss 61. In another embodiment, as Figure 15 As shown, two bosses 61 are provided on one side of the first clamp arm 10 connected to the first elastic member 30 , the first elastic member 30 is inserted between the two bosses 61 , and the two bosses 61 are respectively abutted against the first elastic member 30 for limiting position.
[0068] The first clamp arm 10, the second clamp arm 20 and the first elastic member 30 are used as an example for description. Figure 16 As shown, a boss 61 is respectively provided on the side of the first clamp arm 10 and the second clamp arm 20, and the first elastic member 30 is clamped between the two bosses 61. Specifically, the top of the boss 61 on the first clamp arm 10 is flush with the side of the first clamp arm 10 facing away from the second clamp arm 20, that is, flush with the outer top surface of the first clamp arm 10, and the top of the boss 61 on the second clamp arm 20 is flush with the side of the second clamp arm 20 facing away from the first clamp arm 10, that is, flush with the outer bottom surface of the second clamp arm 20, and in the clamping direction, the thickness of the boss 61 is less than the thickness of the first clamp arm 10 and the second clamp arm 20, and the boss 61 protrudes along the width direction, and the first elastic member 30 abuts against the two bosses 61 respectively to achieve limiting.
[0069] The first clamp arm 10, the second clamp arm 20 and the first elastic member 30 are used as an example for description. Figure 17 As shown, a boss 61 is respectively provided on the side of the first clamp arm 10 and the second clamp arm 20, and the first elastic member 30 is clamped on the outer side of the two bosses 61. Specifically, the bottom of the boss 61 on the first clamp arm 10 is flush with the side of the first clamp arm 10 close to the second clamp arm 20, that is, flush with the inner bottom surface of the first clamp arm 10, and the bottom of the boss 61 on the second clamp arm 20 is flush with the side of the second clamp arm 20 close to the first clamp arm 10, that is, flush with the inner top surface of the second clamp arm 20, and in the clamping direction, the thickness of the boss 61 is less than the thickness of the first clamp arm 10 and the second clamp arm 20, and the boss 61 protrudes along the width direction, and the first elastic member 30 is respectively abutted against the two bosses 61 to achieve position limiting. This embodiment does not specifically limit the position limiting structure, and it can be set according to actual conditions.
[0070] Further, the tissue closing clip 100 may also be provided with a positioning structure (not shown in the figure). The positioning structure is used to cooperate with the delivery system, specifically for connecting with the pulling wire of the delivery system, and the opening and closing of the tissue closing clip 100 are achieved through pulling. The positioning structure may include positioning holes penetrating through the first clip arm 10 and the second clip arm 20. Alternatively, protrusions are respectively provided on the opposite sides of the first clip arm 10 and the second clip arm 20, and the positioning structure includes positioning holes penetrating through the two aforementioned protrusions. It should be noted that the positioning holes penetrate along the width direction of the tissue closing clip 100, that is, perpendicular to the clamping direction, and the positioning holes are used to cooperate with the pulling wire passing through them. The setting of the positioning structure in this embodiment not only facilitates the cooperation between the tissue closing clip 100 and the delivery system, but also can ensure that the opening angle of the tissue closing clip 100 before clamping the tissue is more accurate to the preset maximum angle, and can reduce the loss of the clamping force caused by plastic deformation after opening, improving the clamping force during re-closing. That is to say, the clamping force of the tissue closing clip 100 is further increased, and the clamping stability is improved.
[0071] Further, as Figure 12 shown, in some embodiments of the present invention, the tissue closing clip 100 may further include a sleeve 101. The sleeve 101 is sleeved and covers the outside of the first clip arm 10, the second clip arm 20, the first elastic member 30, and the second elastic member 40. In this embodiment, the sleeve 101 can be made of a biocompatible material. On the basis of the above-described embodiment, the distal ends of the first clip arm 10 and the second clip arm 20 may be provided with wire grooves or wire passing holes for cooperating with the sleeve 101. The wire grooves or wire passing holes are used to fix the end of the sleeve 101 after the sleeve 101 covers each part of the tissue closing clip 100. For example, the end of the wire of the sleeve 101 can be fixed in the wire passing hole by winding or tying a knot. The setting of the wire grooves or wire passing holes in this embodiment avoids more complex assembly methods such as sewing and bonding.
[0072] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims
1. An organization closing clip, characterized in that, Comprising: A first clamping arm; A second clamping arm, which is parallel to and elastically contacts the first clamping arm under the initial working condition; A first elastic member, with a first connection position and a second connection position provided at the distal end of the first elastic member, the first connection position being connected to the first clamping arm and the second connection position being connected to the second clamping arm; A second elastic member, with a third connection position and a fourth connection position provided at the distal end of the second elastic member, the third connection position being connected to the first clamping arm, the fourth connection position being connected to the second clamping arm, the third connection position being spaced from the first connection position, and / or the fourth connection position being spaced from the second connection position.
2. The tissue closure clip according to claim 1, wherein The first connection position is located on the distal side of the third connection position, and the second connection position is located on the distal side of the fourth connection position.
3. The tissue closure clip according to claim 2, characterized in that, The first connection position is connected to a position near the distal end of the first clamping arm or the middle part of the first clamping arm.
4. The tissue closure clip according to claim 3, wherein The first connection position and the second connection position are symmetrically arranged, and / or the third connection position and the fourth connection position are symmetrically arranged.
5. The tissue closure clip according to claim 1, wherein The first connection position and the third connection position are respectively connected to both sides of the first clamping arm, and the second connection position and the fourth connection position are respectively connected to both sides of the second clamping arm.
6. The tissue closure clip according to claim 5, wherein The first elastic member and the second elastic member are arranged as an integrally formed structure.
7. The tissue closure clip according to claim 5, characterized in that, At least one of the first elastic member and the second elastic member is provided with a reinforcement structure, and the reinforcement structure is fixedly connected to the first clamping arm and / or the second clamping arm.
8. The tissue closure clip according to claim 5, wherein The first clamping arm and the second clamping arm are respectively provided with a limiting structure, and the limiting structure cooperates with the first elastic member and the second elastic member.
9. The tissue closure clip according to any one of claims 1 to 8, characterized in that, The first elastic member is hinged or fixedly connected to the first clamping arm and the second clamping arm, and the second elastic member is hinged or fixedly connected to the first clamping arm and the second clamping arm.
10. The tissue closure clip according to claim 9, wherein The first clamping arm and the second clamping arm are arranged as polymer material clamping arms.