Valve clamping device

Abstract

A valve clamping device relates to the technical field of medical instruments and comprises a base, a first clamping piece, a second clamping piece and a first covering film. The base is provided with a first end face, a second end face, a first side face and a second side face, the first end face is opposite to the second end face, and the first side face and the second side face are oppositely arranged on the two sides of the first end face and the second end face. The first clamping piece is movably arranged on the first side face of the base, and the second clamping piece is movably arranged on the second side face of the base. Wherein a first covering film is attached to the first end face and the second end face, by arranging the first covering film, the base can have a soft and continuous surface, the valve clamping device is more friendly to internal tissues of the human body in the process of being implanted into the human body, the thrombus risk is reduced, and the operation safety is improved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a valve clamping device. Background Art

[0002] A valve clipping device is a medical device used to treat heart valve disease, particularly mitral or tricuspid regurgitation. It primarily reduces or eliminates regurgitation by clipping the anterior and posterior leaflets of the valve. Compared to traditional open-chest surgery, a valve clipping device can be implanted through a smaller incision, reducing trauma to the patient, resulting in faster recovery and a lower risk of postoperative complications. Furthermore, most valve clipping devices feature an adjustable clipping component that can adapt to the specific conditions of each patient's valve, providing more personalized treatment.

[0003] However, the valve clipping device still faces the challenge of the complex environment in the patient's body, and the safety and effectiveness of the operation need to be considered. Therefore, the valve clipping device must be continuously improved. Utility Model Content

[0004] The purpose of this application is to provide a valve clamping device, which improves the biocompatibility of the valve clamping device by coating the surface of the valve clamping device, making the valve clamping device more friendly to the internal tissues of the human body during implantation into the human body, reducing the destructive effect of the valve clamping device on the blood, and reducing the risk of thrombosis, thereby further improving the safety of the operation and minimizing the damage to the patient.

[0005] The technical solutions provided in this application are as follows:

[0006] A valve clamping device, comprising:

[0007] a base having a first end surface, a second end surface, a first side surface, and a second side surface, wherein the first end surface and the second end surface are opposite to each other, and the first side surface and the second side surface are oppositely arranged on both sides of the first end surface and the second end surface;

[0008] a first clamping member movably disposed on a first side surface of the base;

[0009] a second clamping member, movably disposed on the second side surface of the base;

[0010] The first coating is attached to the first end surface and the second end surface.

[0011] In some embodiments, the first coating includes a main body and an edge portion provided around the main body, and ends of the edge portion away from the main body extend toward the same side of the main body to fit the edges of the first end face and the second end face.

[0012] In some embodiments, the valve clipping device further comprises:

[0013] First suture;

[0014] The first covering membrane is woven by a plurality of braided wires, and the first suture thread is used to sew the first covering membrane to the first end surface and the second end surface.

[0015] In some embodiments, the proximal end of the base is connected to an attachment sleeve, an outer side wall of the attachment sleeve is attached with a second coating, and the second coating at least covers the outer side wall of one end of the attachment sleeve away from the base.

[0016] In some embodiments, an outer side wall of the attachment sleeve is provided with a friction structure to increase friction between the attachment sleeve and the second coating.

[0017] In some embodiments, the outer side wall of the attachment sleeve is provided with a plurality of grooves, and the grooves form the friction structure.

[0018] In some embodiments, the valve clipping device further comprises:

[0019] Second suture line;

[0020] The second covering film is woven by a plurality of braided wires. The second suture thread passes through the second covering film and is wound around the attachment sleeve. The second suture thread is suitable for being clamped in the groove.

[0021] In some embodiments, the attachment sleeve is in the form of a quadrangular prism with a hollow interior, and a corner plane is provided between two adjacent outer side walls of the attachment sleeve, and the groove is provided on the corner plane.

[0022] In some embodiments, a side where the first clamping member and the second clamping member are close to each other is a first side, and a side where the first clamping member and the second clamping member are away from each other is a second side;

[0023] Wherein, at least the first side and the second side of the first clamping piece, and the first side and the second side of the second clamping piece, are attached with a third coating.

[0024] In some embodiments, a third coating is attached to the first side and the second side of the first clamping member, the distal end surface of the base, and the first side and the second side of the second clamping member.

[0025] In some embodiments, the third coating is integrally formed;

[0026] or,

[0027] The third covering film includes a first sub-film and a second sub-film, the distal end surface of the base includes a first side end surface and a second side end surface, the first side end surface is arranged close to the first side surface, and the second side end surface is arranged close to the second side surface;

[0028] The first split film covers the first side, second side, distal end of the first side and first side end surface of the first clamping member, and the second split film covers the first side, second side, distal end of the second side and second side end surface of the second clamping member.

[0029] In some embodiments, the first separate film is integrally formed, the second separate film is integrally formed, and one end of the first separate film on the first side end surface is connected and fixed to one end of the second separate film on the second side end surface.

[0030] In some embodiments, the valve clipping device further comprises:

[0031] a first catching member and a second catching member, wherein the first catching member and the second catching member are respectively provided on a first side surface and a second side surface of the base and are located on a side where the first clamping member and the second clamping member are close to each other;

[0032] A plurality of anchors are provided on a side of the first capturing member facing the first clamping member, and a plurality of anchors are provided on a side of the second capturing member facing the second clamping member; and a fourth coating is attached to at least portions of the first capturing member and the second capturing member provided with the anchors.

[0033] In some embodiments, one end of the anchoring piece away from the first capturing piece and the second capturing piece extends out of the fourth coating.

[0034] The technical effects of this application are:

[0035] 1. By coating the first and second end surfaces of the base with a film, the present application can provide the first and second end surfaces of the base with a softer, more continuous surface. This makes the valve clamping device more friendly to the internal tissues of the human body during implantation, effectively improving surgical safety. Furthermore, by providing the base with a more continuous surface, blood flow within the human body can be improved, reducing the damage to blood caused by the rough surface of the valve clamping device and the accumulation of blood on the base surface, thereby reducing the risk of thrombosis. Furthermore, the film coating can effectively promote the attachment and growth of endothelial cells, improve the integration of the valve clamping device with surrounding tissues, enhance surgical effectiveness, and facilitate postoperative recovery.

[0036] 2. In the present application, the edge of the first coating extends toward the same side of the main body, which is more conducive to the first coating fitting the first end surface and the second end surface, resulting in a better coating effect.

[0037] 3. The present application attaches a second coating to the outer wall of the attachment sleeve so that the attachment sleeve has a softer and continuous outer surface, which can reduce the damage that the valve clamping device may cause to the internal tissues of the human body to a certain extent, and is more conducive to filling the space between the clamping components on both sides, thereby improving the effectiveness of the operation; at the same time, the second coating is also conducive to promoting the attachment and growth of endothelial cells and improving the integration of the valve clamping device with the surrounding tissues.

[0038] 4. In the present application, a groove is provided on the outer wall of the attachment sleeve, and the second suture thread passing through the second covering is clamped in the groove, thereby effectively improving the connection strength between the second covering and the attachment sleeve, making the second covering less likely to fall off and having strong stability.

[0039] 5. In this application, a third covering is also provided on the first and second clamping members, further enhancing the biocompatibility and surgical safety of the valve clamping device. Because the first and second clamping members move relative to the base, this application separates the first covering on the base from the third covering on the first and second clamping members. This facilitates greater flexibility during movement of the first and second clamping members, making them easier to manipulate without interference and effectively improving the stability of the first and third coverings. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The present application is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0041] Figure 1 1 is a schematic diagram of the three-dimensional structure of a valve clamping device provided in one embodiment of the present application in a state without a membrane covering;

[0042] Figure 2 This is a schematic diagram of the three-dimensional structure of the valve clamping device provided in one embodiment of the present application in another state without a membrane covering;

[0043] Figure 3 is a schematic diagram of the three-dimensional structure of a first clamping member provided in one embodiment of the present application;

[0044] Figure 4 This is a schematic diagram of the three-dimensional structure of the valve clamping device after coating provided in one embodiment of the present application;

[0045] Figure 5 This is a schematic diagram of the three-dimensional structure of the valve clamping device after coating provided in another embodiment of the present application;

[0046] Figure 6 This is a schematic diagram of the three-dimensional structure of the valve clamping device after coating provided in another embodiment of the present application;

[0047] Figure 7This is a schematic diagram of the three-dimensional structure of the valve clamping device after coating provided in another embodiment of the present application;

[0048] Figure 8 This is a schematic diagram of the three-dimensional structure of the valve clamping device after coating provided in another embodiment of the present application;

[0049] Figure 9 This is a schematic diagram of the three-dimensional structure of the valve clamping device after coating provided in another embodiment of the present application.

[0050] Description of Figure Numbers:

[0051] 100, base; 110, first end surface; 120, second end surface; 130, first side surface; 131, first opening; 140, second side surface; 150, accommodating space; 160, first side surface; 170, second side surface;

[0052] 210, first clamping member; 220, second clamping member; 230, first side; 240, second side; 250, connecting arm; 260, supporting arm; 270, clamping arm; 280, avoidance hole;

[0053] 300, attachment sleeve; 310, corner plane; 311, groove; 320, connection structure;

[0054] 410, first capturing member; 420, second capturing member; 430, anchoring member;

[0055] 500, first coating; 510, main body; 520, edge;

[0056] 600, second coating;

[0057] 700, third lamination; 710, first lamination; 720, second lamination;

[0058] 800, fourth coating;

[0059] 901, first laminating position; 902, second laminating position; 903, third laminating position; 904, fourth laminating position; 905, mating edge. DETAILED DESCRIPTION

[0060] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the specific implementation methods of the present application will be described below with reference to the accompanying drawings. The drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative work. Adjustments and improvements made without departing from the concept of the present application are all within the scope of protection of the present application.

[0061] To simplify the drawings, the drawings in the embodiments of this application schematically illustrate only the portions relevant to the present application and do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some drawings, only a portion of components with the same structure or function are schematically depicted; in practice, more or fewer components with the same structure or function may exist.

[0062] In this application, unless otherwise expressly specified and limited, ordinal numbers such as "first", "second", etc. are only used to distinguish and describe related objects, and cannot be understood as indicating or implying the relative importance or order between related objects; in addition, they do not represent the number of related objects. "And / or" is used to describe the relationship between related objects, which includes any relationship between related objects. For example, "a and / or b" includes: "a alone", "b alone", or "a and b". The terms "installation" and "connection" should be understood in a broad sense. For example, "installation" can be direct installation or installation through other components; "connection" can be direct connection or connection through other components. The term "relative arrangement" includes parallel relative or relative at a certain angle. The angle is not limited and is determined according to the number of relatively arranged objects.

[0063] In the embodiments shown in the drawings, directional indications (such as up, down, left, right, front, and back, etc.) are not absolute but relative when describing the structure and movement of each component, and are not used to limit the direction of the product in actual use.

[0064] In the embodiments of the present application, "proximal end" refers to the end of the associated object closest to the operator; "distal end" refers to the end of the associated object farther from the operator. "Proximal end" and "distal end" refer to the position or orientation of the associated object (e.g., a component of a medical device) relative to the operator (e.g., a doctor) using the device (e.g., a medical device) on which the associated object resides. For example, "proximal end" refers to the end closest to the doctor during normal operation of the medical device, while "distal end" refers to the end farther from the doctor during normal operation, i.e., the end that first enters the patient's body.

[0065] A valve clipping device is a medical device used to treat heart valve disease, particularly mitral or tricuspid regurgitation. It achieves edge-to-edge repair by aligning the valve leaflets at the opening, reducing the area of ​​the valve opening when closed and the amount of blood flowing back during valve closure. As an invasive medical device, valve clipping devices have seen rapid growth due to their ability to achieve therapeutic effects with a smaller incision and improved postoperative recovery.

[0066] The valve clamping device generally includes a base 100, a clamping assembly, an attachment sleeve 300 and a transmission assembly, wherein the base 100 is used to fix the clamping assembly and provide support for the movement of the clamping assembly; the attachment sleeve 300 is arranged at the proximal end of the base 100, and the proximal end of the attachment sleeve 300 is provided with a connecting structure 320 for docking with an external delivery system, which can realize the connection and separation of the valve clamping device and the external delivery system; a part of the transmission assembly is arranged inside the attachment sleeve 300, and the other part is arranged inside the base 100, which is used to transmit the force of the external delivery system to the clamping assembly, so that the operator can control the state of the clamping assembly through the external delivery system.

[0067] See also Figure 1 and Figure 2 The clamping assembly may specifically include a clamping member and a capturing member. In the initial stage of implantation, the external delivery system delivers the valve clamping device, and the valve clamping device is in a closed state, with the clamping member and the capturing member thereon close to or attached to the attachment sleeve 300. After the valve clamping device is delivered to the desired position, the external delivery system first controls the clamping member to open, and then controls the capturing member to open toward the clamping member to capture the leaflets. After controlling the valve clamping device to complete the capture and clamping of the leaflets, the external delivery system controls the valve clamping device to disengage, leaving the valve clamping device inside the human body, and the external delivery system is withdrawn from the human body.

[0068] As a long-term implant, the valve clipping device not only faces the challenges of the complex internal environment of the patient, but also needs to consider the safety and effectiveness of the surgery and the minimization of patient damage. Therefore, it is particularly important to continuously improve the biocompatibility of the valve clipping device.

[0069] See also Figure 1 、 Figure 2 and Figure 4 The present invention provides a valve clamping device, comprising a base 100, a first clamping member 210, and a second clamping member 220. The base 100 has a first end surface 110, a second end surface 120, a first side surface 130, and a second side surface 140. The first end surface 110 and the second end surface 120 are opposite each other, and the first side surface 130 and the second side surface 140 are disposed opposite each other on either side of the first end surface 110 and the second end surface 120. The first clamping member 210 and the second clamping member 220 are movably disposed on the first side surface 130 and the second side surface 140 of the base 100, respectively.

[0070] The valve clamping device further includes a first covering 500 , which is attached to the first end surface 110 and the second end surface 120 of the base 100 .

[0071] By coating the first and second end surfaces 110, 120 of the base 100 with a film, this embodiment provides the first and second end surfaces 110, 120 of the base 100 with a softer, more continuous surface. This makes the valve clamping device more friendly to the internal tissues of the human body during implantation, effectively improving surgical safety. Furthermore, by providing the base 100 with a more continuous surface, blood flow within the human body is improved, reducing the damage to blood caused by the rough surface of the valve clamping device and the accumulation of blood on the surface of the base 100, thereby reducing the risk of thrombosis. Furthermore, the film coating effectively promotes the attachment and growth of endothelial cells, improving the integration of the valve clamping device with surrounding tissues, enhancing surgical effectiveness, and facilitating postoperative recovery.

[0072] Specifically, a receiving space 150 is formed in the base 100, and a first opening 131 communicating with the receiving space 150 is formed on the first side surface 130 of the base 100. One end of the first clamping member 210 extends into the receiving space 150 through the first opening 131 and is movably installed in the receiving space 150. Conversely, a second opening communicating with the receiving space 150 is formed on the second side surface 140 of the base 100. One end of the second clamping member 220 extends into the receiving space 150 through the second opening and is movably installed in the receiving space 150.

[0073] Further, see Figures 1 to 3 The first clamping member 210 includes a connecting arm 250, a supporting arm 260, and a clamping arm 270. The connecting arm 250 is used to connect to the base 100 and dock with the transmission assembly within the base 100. The clamping arm 270 is used to clamp the valve, and the supporting arm 260 is used to connect the clamping arm 270 and the connecting arm 250. Conversely, the second clamping member 220 also includes a connecting arm 250, a supporting arm 260, and a clamping arm 270. The first clamping member 210 and the second clamping member 220 are arranged approximately symmetrically along the central axis of the base 100. The proximal end of the transmission assembly docks with the delivery rod in the external delivery system, and the distal end of the delivery rod provides driving force to the transmission assembly, driving the transmission assembly to move axially to control the opening and closing of the first clamping member 210 and the second clamping member 220 relative to the base 100, thereby achieving the capture and clamping of the valve leaflets by the valve clamping device.

[0074] In order to improve the stability of the first clamping member 210 and the second clamping member 220 when opening and closing, and to facilitate the operator to control the valve clamping device to clamp the valve, the first end face 110 and the second end face 120 of the base 100 are preferably provided with a slide rail extending along the axial direction. At the same time, the transmission assembly includes a sliding member that can be slidably arranged on the slide rail. The connecting arm 250 on the first clamping member 210 and the connecting arm 250 on the second clamping arm 270 are both hinged on the sliding member. The operator can control the sliding of the sliding member through the delivery rod, thereby driving the first clamping member 210 and the second clamping member 220 to move.

[0075] The first coating 500 may be in a sheet-like structure, woven from a plurality of braided wires, and has a certain degree of ductility as a whole. Figure 5 and Figure 6 The first coating 500 includes a main body 510 and an edge portion 520 arranged on the side of the main body 510. The edge portion 520 has a tightening tendency, and its end away from the main body 510 extends toward the same side of the main body 510, forming a disc-like structure, which can fit the edges of the first end face 110 and the second end face 120, so that the first coating 500 fits the first end face 110 and the second end face 120 more closely, so that the outline size of the base 100 does not have obvious difference before and after the coating, which is beneficial to the transportation of the device in the human body, and the coating is always in contact with the surface of the base 100 during the operation of the device.

[0076] Preferably, the valve clamping device may also include a first suture line, through which the first membrane 500 is sutured to the corresponding first end face 110 and the second end face 120, so that the first membrane 500 can more firmly cover the first end face 110, the second end face 120 and their edges, effectively improving the stability of the first membrane 500 always adhering to the surface of the base 100, resulting in better surgical effects and more conducive to the patient's postoperative recovery.

[0077] In one example embodiment, see Figure 5 A first coating 500 may be provided on the distal end surface of the base 100 to further improve the biocompatibility of the base 100. The first end surface 110, the second end surface 120 and the first coating 500 on the distal end surface of the base 100 may be integrally formed or may be a split structure.

[0078] Taking the split structure as an example, the number of the first coating 500 can be three, which are respectively attached to the first end face 110, the second end face 120 and the distal end face; or there can be two, which are symmetrically arranged on the first end face 110 and the second end face 120, and the distal edges of the two first coatings 500 extend toward the distal end face, and finally are connected on the distal center line of the base 100 by suturing, bonding, welding, etc., so as to form a first coating 500 portion covering the distal end face of the base 100, and the mating edges 905 of the two first coatings 500 (that is, the edges where the two first coatings 500 are connected) can be near the center line of the distal end face of the base 100.

[0079] In one embodiment, see Figure 1 、 Figure 2 and Figure 6The proximal end of the base 100 is connected to the attachment sleeve 300. A second coating 600 is attached to the outer wall of the attachment sleeve 300, giving the attachment sleeve 300 a softer, more continuous outer surface. This can, to a certain extent, reduce the damage that the valve clamping device may cause to internal tissues of the human body, and is more conducive to filling the space between the first clamping member 210 and the second clamping member 220 on both sides, thereby improving the effectiveness of the surgery. At the same time, the second coating 600 also promotes the attachment and growth of endothelial cells, improving the integration of the valve clamping device with surrounding tissues. The second coating 600 is preferably a hollow cylindrical structure woven from a plurality of braided yarns and can be sleeved on the outside of the attachment sleeve 300 to cover the outer wall of the attachment sleeve 300, particularly the upper middle portion of the outer wall of the attachment sleeve 300.

[0080] Preferably, the outer wall of the attachment sleeve 300 is provided with a friction structure to increase the friction between the attachment sleeve 300 and the second coating 600. For example, by providing a number of ridges, bumps, etc. on the outer wall of the attachment sleeve 300, the adhesion strength of the second coating 600 and the outer wall of the attachment sleeve 300 can be improved.

[0081] In a preferred embodiment, see Figure 1 and Figure 2 The friction structure can be formed by providing a plurality of grooves 311 on the outer wall of the attachment sleeve 300. When the second coating 600 is attached to the attachment sleeve 300, part of the second coating 600 is located in the grooves 311, which can better limit the relative displacement between the second coating 600 and the attachment sleeve 300, and the attachment strength of the second coating 600 is better.

[0082] Furthermore, the valve clamping device also includes a second suture, which shuttles through the second covering 600 and is wrapped around the attachment sleeve 300, and the second suture is suitable for being clamped in the groove 311, which can further improve the connection strength between the second covering 600 and the attachment sleeve. The second covering 600 is not easy to fall off, has strong stability, and has a better surgical effect, which is beneficial to the patient's postoperative recovery.

[0083] Further, see Figure 1 and Figure 2 The attachment sleeve 300 is a hollow quadrangular prism. Compared with a cylindrical structure, the prism structure is more conducive to the attachment of the second covering film 600. Specifically, a corner plane 310 is provided between two adjacent outer walls of the attachment sleeve 300, and the groove 311 can be provided on the corner plane 310.

[0084] In this embodiment, each corner plane 310 is preferably provided with a plurality of grooves 311, and the grooves 311 are sequentially distributed along the axial direction of the attachment sleeve 300, facilitating the winding of the second suture thread around the attachment sleeve 300 and improving the connection strength between the second coating 600 and the accessory sleeve. The number of grooves 311 on each corner plane 310 is preferably three. Of course, in actual production, the number of grooves 311 can also be two, four, etc., and this is not limited here and is within the scope of protection of this application.

[0085] In one embodiment, see Figures 7 to 9 The third coating 700 is attached to the first clamping member 210 and the second clamping member 220. For example, the first side 230 and the second side 240 of the first clamping member 210 and the second clamping member 220 are both attached to the third coating 700. In actual applications, the first sides 230 of the first clamp 210 and the second clamp 220 will act on the valve for a long time, and when the first clamp 210 and the second clamp 220 clamp the valve (that is, the valve clamping device is in a closed state), the second sides 240 of the first clamp 210 and the second clamp 220 will be exposed to the outer position in the blood. Therefore, in this embodiment, the first side 230 and the second side 240 of the first clamp 210 and the second clamp 220 are attached with a third coating 700 to improve the blood compatibility of the first clamp 210 and the second clamp 220, reduce the damage that the valve clamping device may cause to the patient's body tissue during use, and reduce surgical risks and complications.

[0086] Of course, when the first clamping member 210 and the second clamping member 220 clamp the valve, the first side 130 and the second side 140 of the base 100 will also be exposed to the outside of the blood. Therefore, the first side 130 and the second side 140 of the base 100 should also be attached with a third coating 700. Specifically, when the first coating 500 is already attached to the distal end surface of the base 100, the third coating 700 can be divided into two independent parts, one of which covers the first side 230, the second side 240 of the first clamping member 210 and the first side 130 of the base 100, and the other covers the first side 230, the second side 240 of the second clamping member 220 and the second side 140 of the base 100, and both parts of the third coating 700 are independently formed. See Figure 8 and Figure 9If the first coating 500 is not attached to the distal end surface of the base 100, a third coating 700 may be attached to the first clamp 210, the second clamp 220, and the first side 130, the second side 140, and the distal end surface of the base 100. The third coating 700 is connected to the first coating 500 at the distal end of the base 100. The two may be fixedly connected or not fixedly connected. No further restrictions are made here, and all are within the scope of protection of this application. At this time, the third coating 700 may be an integrally formed setting or a split structure may be adopted. Among them, the split structure can avoid the third coating 700 from hindering the movement of the first clamp 210 and the second clamp 220, thereby effectively improving the flexibility of the movement of the first clamp 210 and the second clamp 220, facilitating the operator's control, and reducing the risk of the third coating 700 being damaged due to repeated pulling, thereby improving the stability of the third coating 700.

[0087] For example, see Figure 8 and Figure 9 Taking the third coating 700 adopting a split structure as an example, the third coating 700 may include two independently formed parts, that is, the third coating 700 includes a first separate film 710 and a second separate film 720, and the first separate film 710 and the second separate film 720 form a mating edge 905 at a position roughly in the midline of the distal end of the base 100, and the mating edge 905 can be formed by suturing, bonding, welding, etc.

[0088] Specifically, the distal end surface of the base 100 includes a first side end surface 160 and a second side end surface 170. The first side end surface 160 is located near the first side surface 130, and the second side end surface 170 is located near the second side surface 140. The first split film 710 covers the first side 230, the second side 240, the distal end of the first side surface 130, and the first side end surface 160 of the first clamping member 210. The second split film 720 covers the first side 230, the second side 240, the distal end of the second side surface 140, and the second side end surface 170 of the second clamping member 220. In actual production, the first split membrane 710 and the second split membrane 720 are both integrally formed structures, and the first split membrane 710 and the second split membrane 720 can be respectively mounted on the corresponding clamping parts, covering the first side 230, the second side 240 of the corresponding clamping arm 270 and the transition connection position between the first side 230 and the second side 240. At this time, the first split membrane 710 and the second split membrane 720 located on the second side 240 are similar to sheet structures, and the sheet structure continues to extend from the second side 240 to the midline position of the distal end face of the base 100. The first split membrane 710 and the second split membrane 720 can be connected and fixed at the midline position.

[0089] Specifically, see Figure 2 and Figure 8Taking the first clamping member 210 as an example, the end of the first side 230 of the support arm 260 on the first clamping member 210 close to the connecting arm 250 is the first coating position 901, the end of the clamping arm 270 away from the support arm 260 is the second coating position 902, the end of the second side 240 of the connecting arm 250 close to the base 100 is the third coating position 903, and the midline position of the distal end surface of the base 100 is the fourth coating position 904. The first film separation 710 covers the first side 230 of the clamping arm 270 from the first coating position 901 to the second coating position 902, covers the second side 240 of the clamping arm 270, the second side 240 of the support arm 260 and a part of the second side 240 of the connecting arm 250 from the second position to the third position, and covers a part of the first side 230 surface 130 and the first side end surface 160 at the far end of the base 100 from the third coating position 903 to the fourth coating position 904, thereby completing the coating of the corresponding parts of the first clamping arm 270 and the base 100.

[0090] In this arrangement, the first side 230 and the second side 240 of the upper support arm 260 are both covered by the film, thereby having a soft and continuous surface. The first separate film 710 and the second separate film 720 are both in contact with the surface covered by the film, and the outline volume of the instrument does not change significantly before and after the film is applied. During the implantation process, the movement of the instrument, such as the opening and closing of the first clamp 210 and the second clamp 220, does not cause significant deformation of the film position, especially the distal surface of the base 100 and the film at the mating edge 905, thereby facilitating the transportation and effective implantation of the instrument.

[0091] In one embodiment, see Figure 1 and Figure 9 The valve clamping device also includes a first capturing member 410 and a second capturing member 420, wherein the first capturing member 410 is fixed to the base 100 and is located on the first side 230 of the first clamping member 210, and the second capturing member 420 is fixed to the base 100 and is located on the first side 230 of the second clamping member 220, and the two are roughly symmetrically arranged along the central axis of the base 100.

[0092] In this embodiment, the first capturing member 410 and the first clamping member 210 jointly capture the valve, and the second capturing member 420 and the second clamping member 220 jointly capture the valve. In order to improve the capturing effect of the valve clamping device on the valve, the side of the first capturing member 410 facing the first clamping member 210 and the side of the second capturing member 420 facing the second clamping member 220 are both provided with a plurality of anchors 430. By providing the anchors 430, the clamping effect of the first capturing member 410 and the second capturing member 420 on the valve can be strengthened, and it is not easy to loosen, thereby effectively improving the surgical effect.

[0093] Specifically, see Figure 1 and Figure 3An avoidance hole 280 is provided at the clamping arm 270 of the first clamping member 210 and the clamping arm 270 of the second clamping member 220 , and the avoidance hole 280 is used to avoid the anchor 430 .

[0094] Because the anchor 430 will act on the valve for a long time in actual use, in this embodiment, a fourth covering 800 is provided on the side of the first capturing member 410 facing the first clamping member 210, and on the side of the second capturing member 420 facing the second clamping member 220. The fourth covering 800 covers at least the portion of the first capturing member 410 and the second capturing member 420 where the anchor 430 is provided, thereby reducing the exposed length of the anchor 430 and buffering the force exerted by the anchoring device on the valve.

[0095] Among them, the fourth coating 800 is preferably made of polyester fiber textile film, which has higher porosity and thinner thickness than the first coating 500, the second coating 600 and the third coating 700, and can be arranged at the anchor 430 by wrapping, sewing, welding or the like.

[0096] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0097] It should be noted that the above embodiments can be freely combined as needed. The above are only preferred implementations of the present application. It should be noted that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application, and these improvements and modifications should also be considered as the scope of protection of the present application.

Claims

1. A valve clamping device, characterized in that: include: a base having a first end surface, a second end surface, a first side surface, and a second side surface, wherein the first end surface and the second end surface are opposite to each other, and the first side surface and the second side surface are oppositely arranged on both sides of the first end surface and the second end surface; a first clamping member movably disposed on a first side surface of the base; a second clamping member, movably disposed on the second side surface of the base; The first coating is attached to the first end surface and the second end surface.

2. The valve clipping device according to claim 1, characterized in that: The first coating includes a main body and an edge portion provided around the main body, and ends of the edge portion away from the main body extend toward the same side of the main body to fit the edges of the first end surface and the second end surface.

3. The valve clipping device according to claim 1, characterized in that: Also includes: First suture line; The first covering membrane is woven by a plurality of braided wires, and the first suture thread is used to sew the first covering membrane to the first end surface and the second end surface.

4. The valve clipping device according to any one of claims 1 to 3, characterized in that: The proximal end of the base is connected to an attachment sleeve, an outer side wall of the attachment sleeve is attached with a second coating, and the second coating at least covers the outer side wall of one end of the attachment sleeve away from the base.

5. The valve clipping device according to claim 4, characterized in that: The outer side wall of the attachment sleeve is provided with a friction structure to increase the friction between the attachment sleeve and the second coating.

6. The valve clipping device according to claim 5, characterized in that: The outer side wall of the attachment sleeve is provided with a plurality of grooves, and the grooves form the friction structure.

7. The valve clipping device according to claim 6, characterized in that: Also includes: Second suture line; The second covering film is woven by a plurality of braided wires. The second suture thread passes through the second covering film and is wound around the attachment sleeve. The second suture thread is suitable for being clamped in the groove.

8. The valve clipping device according to claim 6, characterized in that: The attachment sleeve is in the form of a quadrangular prism with a hollow interior, and a corner plane is provided between two adjacent outer side walls of the attachment sleeve, and the groove is provided on the corner plane.

9. The valve clipping device according to any one of claims 1 to 3, characterized in that: The side where the first clamping member and the second clamping member are close to each other is a first side, and the side where the first clamping member and the second clamping member are away from each other is a second side; Wherein, at least the first side and the second side of the first clamping piece, and the first side and the second side of the second clamping piece, are attached with a third coating.

10. The valve clipping device according to claim 9, characterized in that: A third coating is attached to the first side and the second side of the first clamping member, the distal end surface of the base, and the first side and the second side of the second clamping member.

11. The valve clipping device according to claim 10, characterized in that: The third coating is integrally formed; or, The third covering film includes a first sub-film and a second sub-film, the distal end surface of the base includes a first side end surface and a second side end surface, the first side end surface is arranged close to the first side surface, and the second side end surface is arranged close to the second side surface; The first split film covers the first side, second side, distal end of the first side and first side end surface of the first clamping member, and the second split film covers the first side, second side, distal end of the second side and second side end surface of the second clamping member.

12. The valve clipping device according to claim 11, characterized in that: The first separate film is integrally formed, the second separate film is integrally formed, and one end of the first separate film on the first side end surface is connected and fixed to one end of the second separate film on the second side end surface.

13. The valve clipping device according to any one of claims 1 to 3, characterized in that: Also includes: a first catching member and a second catching member, wherein the first catching member and the second catching member are respectively provided on a first side surface and a second side surface of the base and are located on a side where the first clamping member and the second clamping member are close to each other; A plurality of anchors are provided on a side of the first capturing member facing the first clamping member, and a plurality of anchors are provided on a side of the second capturing member facing the second clamping member; and a fourth coating is attached to at least portions of the first capturing member and the second capturing member provided with the anchors.

14. The valve clipping device according to claim 13, characterized in that: One end of the anchoring piece away from the first capturing piece and the second capturing piece extends out of the fourth coating.

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