Valve clamping apparatus and covering method of valve clamping apparatus

Abstract

The invention provides a valve clamping instrument and a covering method of a valve clamper, the valve clamping instrument comprises a covering assembly and the valve clamper, and the covering assembly is used for covering the valve clamper. The wrapping assembly comprises first wrapping cloth, the shape of the first wrapping cloth is matched with the outer contour of the valve clamping device, part of areas of the first wrapping cloth are connected to form a first wrapping sleeve, and the first wrapping sleeve wraps at least part of the outer contour of the valve clamping device. After the wrapping assembly wraps the valve clamping device, the overall size of the intervention sheath tube can be reduced, and the conveying difficulty of the valve clamping device is lowered. Meanwhile, the wrapping assembly has low requirements on the type and the material of the wrapping cloth, so that the manufacturing cost of the wrapping cloth can be reduced, and the economic benefit of the valve clamping instrument is improved.

Description

Technical Field

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

[0002] The atrioventricular valve is a one-way valve located between the atria and ventricles in the human heart. A normal and healthy atrioventricular valve can control the flow of blood from the atria to the ventricles, while preventing blood from flowing from the ventricles to the atria. The atrioventricular valve consists of multiple leaflets. When the edges of adjacent leaflets are in apposition, the atrioventricular valve can be completely closed, thereby preventing blood from flowing from the ventricles to the atria. When the leaflets of the atrioventricular valve or its related structures undergo organic or functional changes, it may lead to poor apposition of adjacent leaflets of the atrioventricular valve; when the ventricles of the heart contract, the atrioventricular valve cannot be completely closed, causing blood to reflux (that is, blood flows back from the ventricles to the atria), which in turn causes a series of pathological changes.

[0003] Currently, implanting a valve clip at the atrioventricular valve site is a common treatment for atrioventricular regurgitation. Existing valve clips utilize an edge-to-edge surgical approach, delivering a clipping component via an interventional catheter to the atrioventricular valve site. The clipping component simultaneously grasps the valve leaflets, securing them and reducing blood regurgitation.

[0004] To reduce wear and tear on the valve clip during insertion through an interventional sheath, as well as tissue damage, a sheath is typically placed over the valve clip to facilitate implantation and surface tissue growth. However, existing sheaths are poorly compatible with the valve clip, forming material buildup on the clip's surface, increasing the size of the interventional sheath and further complicating delivery. Summary of the Invention

[0005] The purpose of the present invention is to provide a valve clamping device and a valve clamp covering method. After the covering component of the valve clamping device is covered on the valve clamp, the overall size of the interventional sheath can be reduced and the difficulty of transporting the valve clamp can be reduced.

[0006] To achieve the above-mentioned objectives, the present invention provides a valve clamping device, which includes a valve clamp and a covering component, wherein the covering component includes a first covering cloth, the shape of which matches the outer contour of the valve clamp, and partial areas of the first covering cloth are connected to form a first covering sleeve, which covers at least a portion of the outer contour of the valve clamp.

[0007] Optionally, the first wrapping cloth is a woven cloth, and the woven cloth can stretch in its own width direction and / or length direction, so that the first covering sleeve can be deformed to match the change in the opening and closing angle of the valve clip.

[0008] Optionally, the valve clipper includes a transmission assembly and a clamping assembly; the number of the clamping assemblies is two, each of the clamping assemblies is connected to the transmission assembly and is used to rotate under the drive of the transmission assembly;

[0009] The first covering sleeve has a first covering area and a second covering area that are connected to each other; the number of the second covering areas is two, and the two second covering areas are respectively arranged on both sides of the first covering area along the length direction of the first wrapping cloth; the first covering area is sleeved on the transmission assembly, and each second covering area is sleeved on a corresponding one of the clamping assemblies.

[0010] Optionally, the transmission assembly includes a connecting rod and a base, there are two connecting rods, one end of each connecting rod is connected to the base, and the other end of each connecting rod is connected to a corresponding clamping assembly; after the base moves, it can synchronously drive the two connecting rods to rotate; the first covering area covers at least part of the outer contour of the connecting rod and at least part of the outer contour of the base.

[0011] Optionally, the first wrapping cloth is a flat woven cloth or a tubular woven cloth, and the first wrapping cloth includes a base covering section and two connecting rod covering sections; the shape of the connecting rod covering section matches the outer contour of the connecting rod, and the shape of the base covering section matches the outer contour of the base; the two connecting rod covering sections are respectively connected to the two ends of the base covering section in the length direction of the first wrapping cloth, and partial areas of the two connecting rod covering sections are connected to form the first covering area.

[0012] Optionally, the clamping assembly includes two clamp arms, each of which is connected to a corresponding connecting rod; the first wrapping cloth also has two clamp arm covering sections, each of which is connected to a corresponding connecting rod covering section, and the two clamp arm covering sections are symmetrically arranged with respect to the width direction of the first wrapping cloth; partial areas of each clamp arm covering section are connected to form the second covering area for sleeve-mounting the clamp arm.

[0013] Optionally, the two edges of each connecting rod covering section that are opposite to each other in the width direction of the first covering cloth protrude outward to form a first folded edge and a second folded edge that are connected to each other, and the second folded edge is connected to the clamp arm covering section; the angle between each first folded edge and the length direction of the first covering cloth is 5° to 20°; the first folded edges in the two connecting rod covering sections are used to connect to form a first suture area.

[0014] Optionally, the first wrapping cloth is a flat woven cloth, and the two edges of the clamp arm covering section are connected after folding to form a second stitching area extending in the length direction of the first wrapping cloth, and the end of the clamp arm covering section is used for stitching or bonding to form a third stitching area extending in the width direction of the first wrapping cloth. Alternatively, the first wrapping cloth is a tubular woven cloth, and the end of the clamp arm covering section is used for stitching or bonding to form a fourth stitching area extending in the width direction of the first wrapping cloth.

[0015] Optionally, the covering assembly further includes fixing members, each of which passes through the clamp arm in the width direction of the first covering cloth and is used to be sewed with the first covering sleeve so that the first covering sleeve fits the surface of the clamp arm.

[0016] Optionally, the covering assembly further includes a reinforcement member, which is fixed in the end of the clamp arm covering section away from the connecting rod covering section, and / or the reinforcement member is fixed in the base covering section and the connecting rod covering section.

[0017] Optionally, the covering assembly further includes a second wrapping cloth, and the clamping assembly further includes a clamping arm, one end of the clamping arm is connected to the clamp arm, and the other end of the clamping arm is used to cooperate with the clamp arm to clamp the target tissue;

[0018] The shape of the second wrapping cloth matches the shape of the clamping arm, and partial areas of the second wrapping cloth are connected to form a second covering sleeve for sleeve-mounting the clamping arm.

[0019] Optionally, the clamping arm has a plurality of barbs, and the second covering sleeve is provided with a plurality of perforations, the positions of the perforations on the second covering sleeve correspond to the positions of the barbs on the clamping arm, and the perforations are used to allow a corresponding one of the barbs to pass through the interior of the second covering sleeve.

[0020] To achieve the above-mentioned object, the present invention further provides a method for coating a valve clip, the method comprising:

[0021] Providing a first wrapping cloth, wherein the shape of the first wrapping cloth matches the shape of the valve clip;

[0022] connecting partial areas of the first wrapping cloth to form a first covering sleeve;

[0023] The first covering sleeve is covered on at least a portion of the outer contour of the valve clip.

[0024] Optionally, the valve clipper includes a transmission assembly and a clamping assembly, the clamping assembly includes a clamp arm, and the clamp arm is connected to the transmission assembly;

[0025] The step of covering at least a portion of the outer contour of the valve clipper with the first covering sleeve comprises:

[0026] Turning the first covering sleeve inside out so that the connection trace of the first covering cloth is located inside the first covering sleeve;

[0027] The forceps arms are opened to cover the first covering sleeve on the valve clip.

[0028] Optionally, the clamping assembly includes two clamp arms, and the valve clamp includes a fixing member;

[0029] The coating method further comprises:

[0030] After the first covering sleeve is placed on the valve clipper, the clamp arms are closed so that the angle between the extension lines of the two clamp arms is 5° to 150°;

[0031] The fixing piece is penetrated and arranged on the clamp arm in a direction perpendicular to the extension direction of the clamp arm, and the fixing piece and the first covering sleeve are sewn together.

[0032] Optionally, the clamping assembly further includes a clamping arm, one end of the clamping arm is connected to the clamp arm, and the other end of the clamping arm is used to cooperate with the clamp arm to clamp the target tissue. The covering method further includes:

[0033] Providing a second wrapping cloth, wherein the second wrapping cloth is a tubular woven cloth, and the shape of the second wrapping cloth matches the shape of the clamping arm;

[0034] wrapping the second wrapping cloth on the clamping arm;

[0035] Partial areas of the second wrapping cloth are connected to form a second covering sleeve that is sleeved on the clamping arm.

[0036] Optionally, the clamping arm has a plurality of barbs, and the second covering sleeve is provided with a plurality of perforations, and the positions of the perforations on the second covering sleeve correspond to the positions of the barbs on the clamping arm;

[0037] The step of wrapping the second wrapping cloth on the clamping arm includes:

[0038] Sleeve the second wrapping cloth on the clamping arm along the protruding direction of the barbs until each barb protrudes from a corresponding one of the through holes in the second wrapping cloth;

[0039] The second wrapping cloth is pulled in the opposite direction of the protruding direction of the barbs, so that each barb is completely extended out of a corresponding one of the through holes.

[0040] In the valve clamping device and the valve clamp covering method provided by the present invention, the valve clamping device includes a valve clamp and a covering component, the covering component includes a first covering cloth, the shape of the first covering cloth matches the external contour of the valve clamp, partial areas of the first covering cloth are connected to form a first covering sleeve, and the first covering sleeve covers at least part of the external contour of the valve clamp.

[0041] Because the shape of the first wrapping material matches the outer contour of the valve clip, it can be applied compactly to the valve clip, preventing accumulation of wrapping material on the surface of the valve clip. This reduces the overall size of the interventional sheath and eases delivery of the valve clip. Furthermore, this wrapping assembly has lower requirements for the type and material of the wrapping material. For example, when the wrapping assembly is made of a flat woven fabric, the manufacturing cost of the wrapping material can be reduced, thereby improving the economic benefits of the valve clipping device. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 Schematic diagram of a usage scenario of a valve clipper clamping a valve leaflet in a closed state according to one embodiment of the present invention;

[0043] Figure 2a 1 is a schematic structural diagram of a valve clipper according to an embodiment of the present invention, wherein the valve clipper is in a closed state;

[0044] Figure 2b 1 is a schematic structural diagram of a valve clipper according to an embodiment of the present invention, wherein the valve clipper is in a partially expanded state;

[0045] Figure 2c 1 is a schematic structural diagram of a valve clipper according to an embodiment of the present invention, wherein the valve clipper is in a fully expanded state;

[0046] Figure 2d Schematic diagram of the structure of the clamping arm of the valve clamper according to one embodiment of the present invention;

[0047] Figure 3 Schematic diagram of the structure of the first wrapping cloth in an unfolded state in a preferred embodiment of the present invention, wherein the first wrapping cloth is a flat woven cloth, and the dotted line indicates the area to be sewn of the first wrapping cloth;

[0048] Figure 4 This is a schematic structural diagram of a first wrapping cloth in a sewing state in a preferred embodiment of the present invention, wherein the first wrapping cloth is a flat woven cloth, and the dotted line represents the area to be sewn of the first wrapping cloth;

[0049] Figure 5 This is a structural schematic diagram of a preferred embodiment of the present invention in which the first wrapping cloth is in a sewn state, wherein the first wrapping cloth is a flat woven cloth and the clamp arm covering section is in a sewn state;

[0050] Figure 6 1 is a schematic diagram of the three-dimensional structure of the first covering sleeve of the covering assembly in a preferred embodiment of the present invention, wherein the sewing marks of the first covering sleeve are located on the outside of the covering assembly;

[0051] Figure 7a Schematic diagram of a top view of a tubular first wrapping cloth in a preferred embodiment of the present invention, wherein the dotted line represents the area to be cut of the first wrapping cloth;

[0052] Figure 7b 2 is a bottom view of the structure of a tubular first wrapping cloth in a preferred embodiment of the present invention, wherein the dotted line represents the area to be cut of the first wrapping cloth;

[0053] Figure 8 1 is a schematic diagram of the three-dimensional structure of the first covering sleeve of the covering assembly in another preferred embodiment of the present invention, wherein the sewing marks of the first covering sleeve are located on the outside of the covering assembly;

[0054] Figure 9 This is a schematic structural diagram of the suture area of the first covering sleeve in a preferred embodiment of the present invention;

[0055] Figure 10a This is a front view of the structure in which the covering component is sleeved on the valve clipper in a preferred embodiment of the present invention;

[0056] Figure 10b This is a schematic axial cross-sectional view of a preferred embodiment of the present invention showing a covering component sheathed on a valve clipper;

[0057] Figure 11a This is a schematic axial cross-sectional view of a covering component and a valve clipper in a preferred embodiment of the present invention, wherein a reinforcing sheet is provided on the covering component;

[0058] Figure 11b for Figure 11a Enlarged view of part A;

[0059] Figure 11c for Figure 11a Enlarged view of part B;

[0060] Figure 12 This is a schematic diagram of the three-dimensional structure of the second covering sleeve in a preferred embodiment of the present invention;

[0061] Figure 13 Schematic diagram of the structure of a second wrapping cloth sleeved on a clamping arm in a preferred embodiment of the present invention, wherein the height of the perforations on the second wrapping cloth is higher than the height of the barbs on the clamping arm;

[0062] Figure 14This is a schematic diagram of the structure in which the second wrapping cloth is sleeved on the clamping arm in another preferred embodiment of the present invention, wherein the barbed portion of the clamping arm extends out of a corresponding through-hole on the second wrapping cloth;

[0063] Figure 15 Schematic diagram of the structure of a second wrapping cloth sleeved on a clamping arm in another preferred embodiment of the present invention, wherein the barbs of the clamping arm completely extend out of a corresponding perforation on the second wrapping cloth;

[0064] Figure 16 for Figure 13 Enlarged view of part C;

[0065] Figure 17 for Figure 14 Enlarged view of part D in the middle;

[0066] Figure 18 1 is a schematic diagram of the three-dimensional structure of the first covering sleeve of the covering assembly in a preferred embodiment of the present invention, wherein the sewing marks of the first covering sleeve are located on the inner side of the covering assembly;

[0067] Figure 19 Schematic diagram of the structure of a valve clipper and a covering assembly in a preferred embodiment of the present invention, wherein the covering assembly is sleeved on the valve clipper along the direction of the arrow;

[0068] Figure 20b This is a schematic structural diagram of a first mold and a first tubular wrapping cloth in a preferred embodiment of the present invention;

[0069] Figure 20a for Figure 20b Enlarged view of part E in the middle;

[0070] Figure 21 Schematic diagram of the structure of the second mold and the second wrapping cloth in a preferred embodiment of the present invention.

[0071] [Description of reference numerals is as follows]:

[0072] Covering assembly 1; first covering cloth 11; base covering section 111; connecting rod covering section 112; first folded edge 1121; second folded edge 1122; first stitching area 1123; clamp arm covering section 113; second stitching area 1131; third stitching area 1132; transverse edge 1133; longitudinal edge 1134; fourth stitching area 1135; first covering sleeve 12; first covering area 121; second covering area 122; fixing member 13; reinforcement member 14; second covering cloth 15; second covering sleeve 16; perforation 161; fifth stitching area 162;

[0073] Valve clipper 2; transmission assembly 21; connecting rod 211; base 212; driving rod 213; clamping assembly 22; clamp arm 221; clamping arm 222; barb 223; target tissue 3; first mold 41; second mold 42. DETAILED DESCRIPTION

[0074] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are greatly simplified and not to exact scale, and are only used to facilitate and clearly illustrate the embodiments of the present invention.

[0075] The terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0076] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "fixed," and the like should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrated; they can be mechanically connected, electrically connected, or communicative; they can be directly connected or connected through an intermediate medium; they can be internally connected between two elements or interactive between two elements, unless otherwise specified. Those skilled in the art can understand the specific meanings of the above terms in the present invention based on the specific circumstances. In the description of the present invention, "plurality" means at least two, such as two or three or more.

[0077] As used in this specification, "distal end" generally refers to the end of the valve clipper away from the operator; the term "proximal end" is opposite to "distal end" and generally refers to the end of the valve clipper close to the operator; the term "axial end" refers to the direction along the axis of the drive rod; the term "circumferential end" refers to the direction around the axis of the drive rod; the term "radial end" refers to the direction perpendicular to the axis of the drive rod.

[0078] The present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments. In the absence of conflict, the following embodiments and features therein may complement or be combined with each other.

[0079] First, it should be noted that in the prior art, the covering sleeve of a valve clip is often made of tubular knitted fabric with a slit in the middle. The covering sleeve is then placed over the valve clip through the slit. This arrangement, due to the significant difference between the shape of the covering sleeve and the outer contour of the valve clip's sheath assembly, can cause material accumulation on the valve clip's surface (e.g., wrinkles). This increases the overall size of the interventional sheath and, in turn, complicates delivery of the valve clip. Furthermore, the use of tubular knitted fabric increases the manufacturing cost of the covering sleeve.

[0080] like Figures 1 to 4 As shown, a preferred embodiment of the present invention provides a valve clipping device, comprising a covering component 1 and a valve clip 2. The covering component 1 is used to cover the valve clip 2 and to cover the outer contour of the valve clip 2. The valve clip 2 can be delivered to a predetermined location in the body and grasp target tissue 3 (i.e., native valve leaflets) to treat regurgitation caused by incomplete closure of adjacent valve leaflets.

[0081] It should be understood that the predetermined location refers to the target location in the body to which the valve clip 2 is delivered. In this embodiment, the predetermined location refers to the location of the mitral valve or tricuspid valve. The target tissue 3 refers to the location where the valve clip 2 is clamped after implantation. In this embodiment, the target tissue 3 refers to the leaflets of the mitral valve or tricuspid valve.

[0082] Reference Figures 3 to 6 As shown, the covering assembly 1 includes a first covering cloth 11, the shape of which matches the outer contour of the valve clip 2. The first covering cloth 11 is a two-dimensional shape that self-connects to form a three-dimensional shape after covering the valve clip 2. Therefore, portions of the first covering cloth 11 are connected to form a first covering sleeve 12, which covers at least a portion of the outer contour of the valve clip 2. In this configuration, the shape of the first covering sleeve 12 matches that of the valve clip 2, allowing the first covering sleeve 12 to closely conform to the surface of the valve clip 2 after being covered, thereby improving the fit between the first covering sleeve 12 and the valve clip 2.

[0083] In the covering assembly 1 provided herein, the shape of the first wrapping cloth 11 after cutting matches the outer contour of the valve clip 2. This allows the first wrapping cloth 11 to be compactly wrapped around the valve clip 2, preventing accumulation of the wrapping material on the surface of the valve clip 2. This can reduce the overall size of the interventional sheath, making it easier to transport the valve clip 2, and thus reducing damage to the blood vessels or heart during the valve clip 2 access process. This improves the success rate of the patient's surgery and enhances safety during the procedure. Furthermore, the covering assembly 1 thus configured has low requirements for the type and material of the wrapping cloth. For example, when the covering assembly 1 is made of a flat woven cloth, the manufacturing cost of the wrapping cloth can be reduced, thereby improving the economic benefits of the valve clipping device.

[0084] Reference Figure 1 As shown, the valve clipper 2 includes a transmission assembly 21 and a gripping assembly 22. There are two gripping assemblies 22; each is connected to the transmission assembly 21 and is driven by the transmission assembly 21 to rotate and grip the target tissue 3. The covering assembly 1 is designed to fit over the transmission assembly 21 and gripping assembly 22. This reduces wear on the interventional sheath during passage of the valve clipper 2 through the sheath and reduces tissue damage after implantation.

[0085] Reference Figure 1 、 Figure 2a to Figure 2c As shown, the transmission assembly 21 includes two connecting rods 211 and a base 212. Each connecting rod 211 is connected to the base 212 at one end, and to a corresponding gripping assembly 22 at the other end. The base 212 moves to synchronously drive the two connecting rods 211 to rotate. The first covering sleeve 12 is used to cover at least a portion of the outer contours of the connecting rods 211 and at least a portion of the outer contours of the base 212.

[0086] Reference Figure 2a to Figure 2d As shown, the clamping assembly 22 includes a clamp arm 221 and a clamping arm 222. There are two clamp arms 221 and two clamp arms 222. Each clamp arm 221 is connected to a corresponding connecting rod 211, and one end of each clamp arm 222 is connected to the clamp arm 221. The clamp arm 221 is driven by the corresponding connecting rod 211 to rotate and cooperate with the other end of the clamp arm 222 to clamp the target tissue 3.

[0087] It should be noted that in this embodiment, the predetermined location is the mitral valve, so the number of connecting rods 211, clamp arms 221, and clamping arms 222 is two. In this case, each set of clamping arms 222 and clamp arms 221 can clamp one valve leaflet. If the predetermined location is the tricuspid valve, the number of connecting rods 211, clamp arms 221, and clamping arms 222 can be two or three.

[0088] In more detail, the transmission assembly 21 further includes a drive rod 213 (see Figure 1 ), the driving rod 213 extends in the vertical direction and is connected to the base 212. The two connecting rods 211 are symmetrically arranged about the axis of the driving rod 213. When the clamp arm 221 of the valve clip 2 rotates, the base 212 of the valve clip 2 can drive the clamp arm 221 to rotate through the connecting rod 211. At this time, the connecting rod 211 can rotate, that is, the connecting rod 211 can be in the open state (refer to Figure 2b ) or closed state (refer to Figure 1 and Figure 2a ).

[0089] In addition, the covering component 1 can preferably be respectively mounted on the forceps arm 221 and the clamping arm 222, which can facilitate the growth of human tissue on the surface of the covering component 1 to achieve a long-term therapeutic effect.

[0090] Preferably, the first wrapping cloth 11 is a woven cloth that can stretch in its width direction and / or length direction, so that the first covering sleeve 12 mounted on the valve clip 2 can be deformed in accordance with the opening and closing angle changes of the valve clip 2.

[0091] Since the first covering sleeve 12 covers the outside of the connecting rod 211, the first covering cloth 11 configured in this way can stretch in its own width direction and / or length direction when the connecting rod 211 is opened, so that the first covering cloth 11 can adapt to the deformation of the connecting rod 211; at the same time, the first covering cloth 11 can also shrink in its own width direction and / or length direction when the connecting rod 211 is closed, so as to restrain the connecting rod 211 when the connecting rod 211 is closed, so as to make the covering compact and avoid the accumulation of covering material on the surface of the connecting rod 211.

[0092] Reference Figure 6 As shown, combined with Figure 1 The first covering sleeve 12 has a first covering area 121 and a second covering area 122 connected to each other. The number of the second covering areas 122 is two, and the two second covering areas 122 are respectively along the length direction a of the first wrapping cloth 11 (refer to Figure 3 ) are disposed on either side of the first covering region 121, i.e., the two second covering regions 122 are symmetrically disposed about the first covering region 121. The first covering region 121 is sleeved onto the transmission assembly 21, i.e., the first covering region 121 sleeves over the exterior of the connecting rod 211 and the base 212 to enclose the connecting rod 211 and the base 212. The second covering regions 122 are configured to sleeve over a corresponding gripping assembly 22. Specifically, each second covering region 122 is configured to sleeve over the exterior of a corresponding clamp arm 221 to enclose the clamp arm 221.

[0093] Reference Figures 3 to 6As shown, in a preferred embodiment, the first wrapping cloth 11 is a flat woven cloth and includes a base covering section 111 and two connecting rod covering sections 112. For example, the first wrapping cloth 11 can be cut to form the base covering section 111 and the connecting rod covering sections 112. The shape of the connecting rod covering section 112 matches the outer contour of the connecting rod 211, and the shape of the base covering section 111 matches the outer contour of the base 212. The two connecting rod covering sections 112 are connected to the base covering section 111 at both ends of the first wrapping cloth 11 in the length direction a. The two connecting rod covering sections 112 are symmetrically arranged with respect to the width direction b of the first wrapping cloth 11. Partial areas of the two connecting rod covering sections 112 are connected to form a first covering area 121.

[0094] Reference Figure 7a and Figure 7b In another preferred embodiment, the first wrapping cloth 11 is a tubular woven cloth. The first wrapping cloth 11 is cut along the dotted line in the figure to form a base covering section 111 and two connecting rod covering sections 112. The two connecting rod covering sections 112 are respectively connected to the base covering section 111 at both ends of the length direction a of the first wrapping cloth 11. Figure 8 As shown, partial regions of the two connecting rod covering segments 112 are connected to form a first covering region 121 .

[0095] In more detail, the areas of the two connecting rod covering segments 112 that are symmetrically arranged with respect to the width direction b of the first covering cloth 11 are used for sewing or bonding to form the first covering area 121 .

[0096] Reference Figure 3 and Figure 7a As shown, the first wrapping cloth 11 further has two clamp arm covering sections 113, each of which is connected to a corresponding connecting rod covering section 112. The two clamp arm covering sections 111 are symmetrically arranged with respect to the width direction b of the first wrapping cloth 11. Partial areas of each clamp arm covering section 113 are connected (e.g., sewn or bonded) to form a second covering area 122 for enclosing the clamp arm 221.

[0097] Continue to refer to Figure 3 In a specific embodiment, the two edges of each connecting rod covering section 112 that are opposite to each other in the width direction b of the first covering cloth 11 protrude outward to form a first folded edge 1121 and a second folded edge 1122 that are connected to each other, and the second folded edge 1122 is connected to the clamp arm covering section 113.

[0098] Reference Figure 3 and Figure 4As shown, the first folded edges 1121 in the two connecting rod covering sections 112 are used to connect to form a first stitching area 1123. In this embodiment, the two first folded edges 1121 in the two connecting rod covering sections 112, which are symmetrically arranged about the width direction b of the first wrapping cloth 11, are connected to form the first stitching area 1123.

[0099] Reference Figure 3 As shown, in order to adapt to the shape of the two connecting rods 211 when rotating, the angle θ between the first folded edge 1121 of each connecting rod covering section 112 and the length direction a of the first wrapping cloth 11 is less than 50°.

[0100] More preferably, the angle θ between the first folded edge 1121 and the length direction a of the first wrapping cloth 11 is 5° to 20°.

[0101] Return to reference Figure 1 After the valve clipper 2 is closed, the angle β between the extension lines of the two forceps arms 221 is 5° to 150°, more preferably 20° to 60°. In other words, after the valve clipper 2 clamps the target tissue 3, the angle β between the extension directions of the two forceps arms 221 is preferably 20° to 60°.

[0102] During actual cutting, the angle θ between the first folded edge 1121 and the length direction a of the first wrapping cloth 11 can be set according to the angle β between the two clamp arms 221 when the valve clipper 2 is closed, so that the first covering sleeve 12 fits better with the surface of the connecting rod 211.

[0103] Reference Figure 5 As shown, in a preferred embodiment, the first wrapping cloth 11 is a flat woven cloth. Two edges of the caliper arm covering section 113 (e.g., two edges of the caliper arm covering section 113 that are opposite each other in the width direction b of the first wrapping cloth 11) are connected after folding to form a second stitching area 1131 extending in the length direction a of the first wrapping cloth 11. The ends of the caliper arm covering section 113 (e.g., the ends of the caliper arm covering section 113 that are away from the connecting rod covering section 112) are stitched or bonded to form a third stitching area 1132 extending in the width direction b of the second wrapping cloth 11. The first wrapping cloth 11 is stitched at the first stitching area 1123, the second stitching area 1131, and the third stitching area 1132 to form the first covering sleeve 12.

[0104] For more details, refer to Figure 3 As shown, the clamp arm covering section 113 has two transverse edges 1133 parallel to the length direction a of the first wrapping cloth 11 and a longitudinal edge 1134 parallel to the width direction b of the first wrapping cloth 11. The two transverse edges 1133 form a second stitching area 1131 after folding and sewing or bonding, and the longitudinal edge 1134 forms a third stitching area 1132 after sewing or bonding.

[0105] Reference Figure 8 As shown, in another preferred embodiment, the clamp arm covering section 113 is a tubular woven cloth, and the end of the clamp arm covering section 113 (for example, the end of the clamp arm covering section 113 away from the connecting rod covering section 112) is used for sewing or bonding to form a fourth sewing area 1135 extending in the length direction a of the first covering cloth 11.

[0106] Specifically, when the first wrapping cloth 11 is a tubular woven cloth, the first stitching area 1123 and the fourth stitching area 1135 of the first wrapping cloth 11 may be stitched to form the first covering sleeve 12 .

[0107] The present application does not limit the connection method of the sewing area in the first wrapping cloth 11. The edges of the first wrapping cloth 11 can be connected by sewing, bonding or welding, and can also be connected by other suitable methods. In addition, if the two edges of the first wrapping cloth 11 are connected by sewing, the two edges can be connected by folding in half and then sewing (refer to Figure 6 and Figure 8 ), the two edges can also be connected by pressing each other (refer to Figure 9 ).

[0108] Reference Figure 10a and Figure 10b As shown, the covering assembly 1 further includes a fixing member 13 , which penetrates the clamp arm 221 in the width direction b of the first covering cloth 11 and is used to sew with the first covering sleeve 12 so that the first covering sleeve 12 fits the surface of the clamp arm 221 .

[0109] In this embodiment, the number of fixing members 13 corresponds to the number of clamp arms 221. The covering assembly 1 is covered on the valve clamp 2. After the valve clamp 2 is closed, the fixing member 13 passes through a corresponding clamp arm 221 in the width direction b of the first wrapping cloth 11, and the two ends of the fixing member 13 are used to be sutured on the first covering sleeve 12.

[0110] When the base 212 drives the arms 221 to rotate via the connecting rod 211, if the angle between the extension lines of the two arms 221 is too large (i.e., when the valve clip 2 opens and closes at a large angle), the first covering sleeve 12 may become redundant and no longer adhere to the surface of the arms 221. After the valve clip 2 is closed, the fixing member 13 is sutured to the first covering sleeve 12. Since the valve clip 2 is in the closed state, this arrangement not only allows the first covering sleeve 12 to better adhere to the closed state of the valve clip 2, preventing accumulation and redundancy of the first covering sleeve 12, but also ensures that the first covering sleeve 12 remains in contact with the surface of the arms 221 during rotation, preventing wrinkles on the surface of the valve clip 2 during the process of the valve clip 2 capturing the valve leaflets.

[0111] Reference Figures 11a to 11c As shown, in a preferred embodiment, the covering component 1 further includes a reinforcement member 14, and the reinforcement member 14 can be in the shape of a sheet or a block. Figure 11b As shown in FIG. 1 , in a specific example, the reinforcement member 14 is fixed in the end of the clamp arm covering section 113 away from the connecting rod covering section 112 . Figure 11c As shown, in another specific example, the reinforcement member 14 is fixed in the base covering section 111 and the connecting rod covering section 112 .

[0112] Reference Figure 11a As shown, in another specific example, the reinforcement member 14 is fixed in the end of the clamp arm covering section 113 away from the connecting rod covering section 112, and is also fixed in the base covering section 111 and the connecting rod covering section 112 to increase the wear resistance of the end of the valve clipper 2. Such a configuration can, on the one hand, improve the wear resistance of the valve clipper 2 when passing through the sheath to avoid damage to the first covering sleeve 12; on the other hand, the improvement of the wear resistance of the end of the first covering sleeve 12 allows the first covering sleeve 12 to be prepared with a thinner woven fabric to adapt to a smaller sheath and improve the passability of the valve clipper 2 in the interventional sheath.

[0113] In the prior art, because valve clippers are interventional devices, their clamping arms have several barbs. The existing covering cloth is made of woven and sewn fabric. When the covering cloth is actually inserted, it can only be inserted and advanced in the direction of the barbs' protrusion, and cannot be retracted in the opposite direction of the barbs' protrusion, making insertion difficult.

[0114] Furthermore, after the covering cloth is applied to the clamping arm, the barbs need to extend from the gaps in the woven cloth. Due to the large number of barbs and the flexible structure of the covering cloth, some of the barbs may deform axially after the covering cloth is applied, making it difficult to ensure that all barbs extend from the covering cloth at the intended location. If the barbs do not extend at the intended location, some barbs may not extend completely or even fail to extend, making it impossible for the clamping arm to effectively grasp the leaflet.

[0115] Reference Figure 12 As shown, the covering assembly 1 further includes a second covering cloth 15. The shape of the second covering cloth 15 matches the shape of the clamping arm 222. Partial areas of the second covering cloth 15 are connected to form a second covering sleeve 16 for covering the clamping arm 222. During actual covering, the second covering cloth 15 can be first covered on the clamping arm 222, and then the ends of the second covering cloth 15 can be sewn or bonded after the covering is completed to form the second covering sleeve 16.

[0116] For more details, refer to Figure 12 As shown, the second wrapping cloth 15 is a tubular woven cloth, and the end of the second wrapping cloth 15 away from the connecting rod covering section 112 is used for sewing or bonding to form a fifth sewing area 162.

[0117] The present application does not limit the material of the second covering sleeve 16. The second covering sleeve 16 can be formed by folding a flat woven cloth and then sewing or bonding the flat woven cloth. The second covering sleeve 16 can also be formed by sewing or bonding the ends of the tubular woven cloth.

[0118] Reference Figures 13 to 17 As shown, combined with Figure 1 In a preferred embodiment, the clamping arm 222 has a plurality of barbs 223, and the second covering sleeve 16 is provided with a plurality of perforations 161. The positions of the perforations 161 on the second covering sleeve 16 correspond to the positions of the barbs 223 on the clamping arm 222. The perforations 161 are used to allow a corresponding barb 223 to pass through the interior of the second covering sleeve 16.

[0119] The second covering sleeve 16 provided in the present application has a perforation 161 thereon, so that the barbs 223 can all extend out of the second covering sleeve 16 at the position of the perforation 161. On the one hand, the second covering sleeve 16 can be tightly covered, thereby reducing the overall size of the clamping arm 222 after being covered, which is beneficial to the overall implantation of the valve clamp 2 and has good interventional performance; on the other hand, the barbs 223 can be fully extended, which helps the clamping arm 222 to firmly and effectively grasp the leaflets, thereby improving the reliability of the valve clamp 2 in grasping the leaflets.

[0120] A preferred embodiment of the present invention further provides a method for coating a valve clip. In a non-limiting embodiment, taking a valve clip 2 for capturing two leaflets as an example, the method for coating the valve clip 2 includes:

[0121] Step 1: Reference Figure 3 、 Figure 7a and Figure 7b , providing a first wrapping cloth 11 , the shape of which matches the shape of the valve clip 2 .

[0122] Step 2: Reference Figure 6 and Figure 8 , partial areas of the first wrapping cloth 11 are connected to form a first covering sleeve 12 .

[0123] Step 3: Reference Figure 19 The first covering sleeve 12 is covered on at least a portion of the outer contour of the valve clip 2. This can avoid the accumulation of covering material on the surface of the valve clip 2, reduce the overall size of the interventional sheath, and reduce the difficulty of delivering the valve clip 2.

[0124] Reference Figure 1 、 Figure 2a to Figure 2dAs shown, the valve clipper 2 includes a transmission assembly 21 and a clamping assembly 22 . The clamping assembly 22 includes a clamp arm 221 , and the clamp arm 221 is connected to the transmission assembly 21 .

[0125] Preferably, the step of covering the first covering sleeve 12 on at least a portion of the outer contour of the valve clip 2 includes:

[0126] Reference Figure 18 , the first covering sleeve 12 is turned outward so that the connection traces (such as suturing or bonding traces) of the first covering cloth 11 are placed on the inner side of the first covering sleeve 12, thereby preventing the connection traces of the first covering cloth 11 from damaging human tissue after implantation.

[0127] Reference Figure 19 The clamp arms 221 of the valve clip 2 are opened, for example, to a maximum angle, so that the first covering sleeve 12 can be placed on the valve clip 2. Placing the covering assembly 1 after the valve clip 2 is in the open state can make it easier to place the covering assembly 1.

[0128] Reference Figure 10a-10b As shown, combined with Figure 1 The clamping assembly 22 includes two clamp arms 221, and the valve clamp 2 includes a fixing part 13, which passes through the clamp arms 221 in the width direction of the first wrapping cloth 11 and is used to sew with the first covering sleeve 12 so that the first covering sleeve 12 fits the surface of the clamp arms 221.

[0129] Preferably, the covering method of the valve clipper 2 further includes:

[0130] Reference Figure 10a and Figure 10b After the first covering sleeve 12 is sleeved on the valve clipper 2, the clamp arms 221 of the valve clipper 2 are closed so that the angle β between the extension lines of the two clamp arms 221 is 5° to 150°.

[0131] Reference Figure 10b and Figure 11a As shown, combined with Figure 1 After closing the valve clipper 2, the fixing piece 13 is penetrated and set on the clamp arm 221, and the fixing piece 13 is sutured to the first covering sleeve 12 so that the first covering sleeve 12 is always in contact with the surface of the valve clipper 2 during the rotation of the clamp arm 221.

[0132] Reference Figure 1 、 Figure 2a to Figure 2d The transmission assembly 21 includes a connecting rod 211 and a base 212. There are two connecting rods 211. One end of each connecting rod 211 is connected to the base 212, and the other end of each connecting rod 211 is connected to a corresponding clamping assembly 22. When the base 212 moves, it can synchronously drive the two connecting rods 211 to rotate.

[0133] Preferably, the step of providing the first wrapping cloth 11 includes:

[0134] Reference Figures 3 to 8 As shown, in a specific embodiment, the middle portion of the first wrapping cloth 11 is cut to form a clamp arm covering section 113, a connecting rod covering section 112 and a base covering section 111 that are sequentially connected in the length direction a of the first wrapping cloth 11. The number of the clamp arm covering section 113 and the connecting rod covering section 112 is two, and the two clamp arm covering sections 113 and the two connecting rod covering sections 112 are symmetrically arranged on both sides of the base covering section 111; the shape of the connecting rod covering section 112 matches the outer contour of the connecting rod 211 and is used to be sleeved on the outside of the connecting rod 211, and the shape of the base covering section 111 matches the outer contour of the base 212 and is used to be sleeved on the outside of the base 212.

[0135] Furthermore, partial areas of the two connecting rod covering segments 112 are connected, and partial areas of each clamp arm covering segment 113 are connected to form a first covering sleeve 12 for sheathing the valve clipper 2 .

[0136] Reference Figure 20a and Figure 20b As shown, combined with Figures 7a to 8 In a specific example, the step of cutting the middle portion of the first wrapping cloth 11 includes:

[0137] The first wrapping cloth 11 is a tubular woven cloth. A first mold 41 is placed inside the first wrapping cloth 11. The first wrapping cloth 11 is cut to form a connecting rod covering section 112 and a base covering section 111. The first mold 41 is removed, and the first stitching area 1123 and the fourth stitching area 1135 are sewn together to form the first covering sleeve 12.

[0138] Optionally, the step of connecting a portion of each clamp arm covering segment 113 to form a first covering sleeve 12 for covering the valve clip 2 includes:

[0139] Refer to Figure 2~ Figure 6 As shown, in a preferred embodiment, the first wrapping cloth 11 is a flat woven cloth, and the two edges of each clamp arm covering section 113 that are opposite to each other in the width direction b of the first wrapping cloth 11 are folded and sewn or bonded, and the end of each clamp arm covering section 113 is sewn or bonded to form a part of the first covering sleeve 12 for sleeve-mounting the clamp arm 221.

[0140] Reference Figures 7a to 8 As shown, in another preferred embodiment, the first covering cloth 11 is a tubular woven cloth, and the end of each clamp arm covering section 113 is sewn or bonded to form a portion of the first covering sleeve 12 for covering the clamp arm 221.

[0141] Reference Figure 1 、 Figure 2a to Figure 2d The clamping assembly 22 further includes a clamping arm 222 , one end of the clamping arm 222 is connected to the clamp arm 221 , and the other end of the clamping arm 222 is used to cooperate with the clamp arm 221 to clamp the target tissue 3 .

[0142] To cover the clamping arms 222 of the valve clip 2, the method for covering the valve clip 2 includes:

[0143] Step 1: Reference Figure 12 and Figure 21 , and combined with Figure 2d , providing a second wrapping cloth 15 , the second wrapping cloth 15 is a tubular woven cloth, and the shape of the second wrapping cloth 15 matches the shape of the clamping arm 222 .

[0144] Step 2: Reference Figures 13 to 15 , wrap the second wrapping cloth 15 on the clamping arm 222.

[0145] Step 3: Reference Figure 12 , and combined with Figures 13 to 15 , partial areas of the second wrapping cloth 15 are connected to form a second covering sleeve 16 that is sleeved on the clamping arm 222.

[0146] Reference Figure 12 and Figure 21 , and combined with Figure 2d The clamping arm 222 has a plurality of barbs 223 , and the second covering sleeve 16 is provided with a plurality of through-holes 161 . The positions of the through-holes 161 on the second covering sleeve 16 correspond to the positions of the barbs 223 on the clamping arm 222 .

[0147] Preferably, the step of providing the second wrapping cloth 15 includes:

[0148] Reference Figure 12 and Figure 21 , and combined with Figure 2d A second mold 42 is set in the tubular second wrapping cloth 15, and a plurality of perforations 161 are cut on the second wrapping cloth 15, and the cutting positions of the perforations 161 on the second covering sleeve 16 correspond to the positions of the barbs 223 on the clamping arm 222.

[0149] Preferably, the step of wrapping the second wrapping cloth 15 on the clamping arm 222 includes:

[0150] Reference Figures 13 to 17 The second wrapping cloth 15 is sleeved on the clamping arm 222 along the protruding direction of the barbs 223 until each barb 223 extends out of the second wrapping cloth 15 from a corresponding through-hole 161 .

[0151] Reference Figure 15, pull the second wrapping cloth 15 in the opposite direction of the protruding direction of the barbs 223 so that each barb 223 is completely extended out of a corresponding through-hole 161 .

[0152] Such a configuration, on the one hand, can make the second covering sleeve 16 tightly covered, thereby reducing the overall size of the clamping arm 222 after being covered, which is beneficial to the overall implantation of the valve clamp 2 and has good intervention performance; on the other hand, it can make the barb 223 fully extended, which helps the clamping arm 222 to firmly and effectively grasp the leaflet, thereby improving the reliability of the valve clamp 2 in grasping the leaflet.

[0153] Preferably, the step of making each barb 223 extend out of the second wrapping cloth 15 from a corresponding perforation 161 further includes:

[0154] Reference Figure 13 and Figure 16 The second wrapping cloth 15 is sleeved on the clamping arm 222 along the protruding direction of the barbs 223 until each through-hole 161 is adjacent to a corresponding barb 223 .

[0155] Reference Figures 14 to 17 As shown, each through hole 161 is pulled along the extending direction of the barb 223 so that each barb 223 extends out of the second wrapping cloth 15 from a corresponding through hole 161 .

[0156] Optionally, the step of connecting a portion of the second wrapping cloth 15 to form a second covering sleeve 16 sleeved on the clamping arm 222 includes:

[0157] Reference Figure 12 The ends of the second wrapping cloth 15 are fixedly connected to form a second covering sleeve 16. At this time, the shape of the second covering sleeve 16 matches the shape of the clamping arm 222, so that the second covering sleeve 16 is compactly wrapped on the clamping arm 222, reducing the difficulty of transporting the valve clipper 2.

[0158] In summary, in the valve clipping device provided by the present invention, the cut shape of the covering component 1 matches the outer contour of the valve clip 2, thereby allowing the first wrapping cloth 11 to be tightly wrapped around the valve clip 2 and preventing accumulation of the covering material on the surface of the valve clip 2. This reduces the overall size of the interventional sheath and eases the delivery of the valve clip 2. Furthermore, the covering component 1 thus configured has low requirements for the type and material of the covering cloth. When the covering component 1 is made of a flat woven fabric, the manufacturing cost of the covering cloth can be reduced, thereby improving the economic benefits of the valve clipping device.

[0159] The above description is only a description of the preferred embodiments of the present invention and does not limit the scope of the present invention. Any changes and modifications made by ordinary technicians in the field of the present invention based on the above disclosure are within the scope of protection of the present invention.

Claims

1. A valve clipping device, characterized in that: The invention comprises a valve clipper and a covering component, wherein the covering component comprises a first covering cloth, the shape of which matches the outer contour of the valve clipper, and a partial area of the first covering cloth is connected to form a first covering sleeve, which covers at least a part of the outer contour of the valve clipper.

2. The valve clipping device according to claim 1, characterized in that: The first wrapping cloth is a woven cloth that can stretch in its own width direction and / or length direction, so that the first covering sleeve can be deformed in accordance with the change in the opening and closing angle of the valve clipper.

3. The valve clipping device according to claim 1, wherein: The valve clipper includes a transmission assembly and a clamping assembly; there are two clamping assemblies, each of which is connected to the transmission assembly and is used to rotate under the drive of the transmission assembly; The first covering sleeve has a first covering area and a second covering area that are connected to each other; the number of the second covering areas is two, and the two second covering areas are respectively arranged on both sides of the first covering area along the length direction of the first wrapping cloth; the first covering area is sleeved on the transmission assembly, and each second covering area is sleeved on a corresponding one of the clamping assemblies.

4. The valve clipping device according to claim 3, characterized in that: The transmission assembly includes a connecting rod and a base, wherein there are two connecting rods, one end of each connecting rod is connected to the base, and the other end of each connecting rod is connected to a corresponding one of the clamping assemblies; After the base moves, it can synchronously drive the two connecting rods to rotate; The first covering area covers at least a portion of an outer contour of the connecting rod and at least a portion of an outer contour of the base.

5. The valve clipping device according to claim 4, characterized in that: The first wrapping cloth is a flat woven cloth or a tubular woven cloth, and the first wrapping cloth includes a base covering section and two connecting rod covering sections; the shape of the connecting rod covering section matches the external contour of the connecting rod, and the shape of the base covering section matches the external contour of the base; the two connecting rod covering sections are respectively connected to the two ends of the base covering section in the length direction of the first wrapping cloth, and partial areas of the two connecting rod covering sections are connected to form the first covering area.

6. The valve clipping device according to claim 5, characterized in that: The clamping assembly includes two clamp arms, each of which is connected to a corresponding connecting rod; the first wrapping cloth also has two clamp arm covering sections, each of which is connected to a corresponding connecting rod covering section, and the two clamp arm covering sections are symmetrically arranged with respect to the width direction of the first wrapping cloth; partial areas of each clamp arm covering section are connected to form the second covering area for sleeved on the clamp arm.

7. The valve clipping device according to claim 6, characterized in that: The two edges of each connecting rod covering section that are opposite to each other in the width direction of the first covering cloth protrude outward to form a first folded edge and a second folded edge that are connected to each other, and the second folded edge is connected to the clamp arm covering section; the angle between each first folded edge and the length direction of the first covering cloth is 5° to 20°; the first folded edges in the two connecting rod covering sections are used to connect to form a first stitching area.

8. The valve clipping device according to claim 7, characterized in that: The first wrapping cloth is a flat woven cloth. The two edges of the clamp arm covering section are used to be connected after folding to form a second stitching area extending in the length direction of the first wrapping cloth. The end of the clamp arm covering section is used to be stitched or bonded to form a third stitching area extending in the width direction of the first wrapping cloth. Alternatively, the first wrapping cloth is a tubular woven cloth, and the end portion of the clamp arm covering section is used for sewing or bonding to form a fourth sewing area extending in the width direction of the first wrapping cloth.

9. The valve clipping device according to any one of claims 6 to 8, characterized in that: It also includes a fixing piece, which passes through the clamp arm in the width direction of the first wrapping cloth and is used to sew with the first covering sleeve so that the first covering sleeve fits the surface of the clamp arm.

10. The valve clipping device according to any one of claims 6 to 8, characterized in that: It also includes a reinforcement member, which is fixed in the end of the clamp arm covering section away from the connecting rod covering section, and / or the reinforcement member is fixed in the base covering section and the connecting rod covering section.

11. The valve clipping device according to any one of claims 6 to 8, characterized in that: The clamping assembly further comprises a second wrapping cloth, wherein the clamping assembly further comprises a clamping arm, one end of the clamping arm is connected to the clamp arm, and the other end of the clamping arm is used to cooperate with the clamp arm to clamp the target tissue; The shape of the second wrapping cloth matches the shape of the clamping arm, and partial areas of the second wrapping cloth are connected to form a second covering sleeve for sleeve-mounting the clamping arm.

12. The valve clipping device according to claim 11, wherein: The clamping arm has a plurality of barbs, and the second covering sleeve is provided with a plurality of perforations. The positions of the perforations on the second covering sleeve correspond to the positions of the barbs on the clamping arm, and the perforations are used to allow a corresponding one of the barbs to pass through the interior of the second covering sleeve.

13. A method for covering a valve clip, characterized in that: include: Providing a first wrapping cloth, wherein the shape of the first wrapping cloth matches the shape of the valve clipper; connecting partial areas of the first wrapping cloth to form a first covering sleeve; The first covering sleeve is covered on at least a portion of the outer contour of the valve clip.

14. The method for covering a valve clip according to claim 13, wherein: The valve clipper includes a transmission assembly and a clamping assembly, wherein the clamping assembly includes a clamp arm connected to the transmission assembly; The step of covering at least a portion of the outer contour of the valve clipper with the first covering sleeve comprises: Turning the first covering sleeve inside out so that the connection trace of the first covering cloth is located inside the first covering sleeve; The forceps arms are opened to cover the first covering sleeve on the valve clipper.

15. The method for covering a valve clip according to claim 14, wherein: The clamping assembly includes two clamp arms, and the valve clip includes a fixing member; The coating method further comprises: After the first covering sleeve is placed on the valve clipper, the clamp arms are closed so that the angle between the extension lines of the two clamp arms is 5° to 150°; The fixing piece is penetrated and arranged on the clamp arm in a direction perpendicular to the extension direction of the clamp arm, and the fixing piece and the first covering sleeve are sewn together.

16. The method for covering a valve clip according to claim 14, wherein: The clamping assembly further includes a clamping arm, one end of which is connected to the clamp arm, and the other end of which is used to cooperate with the clamp arm to clamp the target tissue. The covering method further includes: Providing a second wrapping cloth, wherein the second wrapping cloth is a tubular woven cloth, and the shape of the second wrapping cloth matches the shape of the clamping arm; wrapping the second wrapping cloth on the clamping arm; Partial areas of the second wrapping cloth are connected to form a second covering sleeve that is sleeved on the clamping arm.

17. The method for covering a valve clip according to claim 16, wherein: The clamping arm has a plurality of barbs, and the second covering sleeve is provided with a plurality of perforations, wherein the positions of the perforations on the second covering sleeve correspond to the positions of the barbs on the clamping arm; The step of wrapping the second wrapping cloth on the clamping arm includes: Sleeve the second wrapping cloth on the clamping arm along the protruding direction of the barbs until each barb protrudes from a corresponding one of the through holes in the second wrapping cloth; The second wrapping cloth is pulled in the opposite direction of the protruding direction of the barbs, so that each barb is completely extended out of a corresponding one of the through holes.

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