Prosthetic valve release device

Abstract

The invention provides an artificial valve release device which comprises a mounting part and a bearing arm, an artificial valve leaflet is connected to the mounting part, a limiting part for limiting the mounting part is arranged on the bearing arm, a puncture tube is arranged in the bearing arm, an anchoring part and a push rod are arranged in the puncture tube, the push rod is located at the near end of the anchoring part, and the mounting part is connected with the artificial valve leaflet. The puncture tube is used for puncturing an artificial valve leaflet and a native valve, after puncturing is completed, the puncture tube is withdrawn into the puncture channel of the bearing arm, in the process that the puncture tube is withdrawn into the puncture channel, the push rod abuts against the anchoring piece so that the anchoring piece cannot be withdrawn along with the puncture tube, and then the anchoring piece can penetrate out of the puncture tube. After the anchoring piece penetrates out of the puncture tube, the artificial valve leaflet and the native valve are fixedly connected, after fixed connection, the mounting piece is separated from the limiting part, the artificial valve leaflet is also separated from the bearing arm along with the mounting piece, and then the artificial valve leaflet and the native valve are fixedly connected; the technical problem that it is difficult to disengage the artificial valve from an instrument so that the artificial valve can be connected to a natural valve is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular, relates to an artificial valve release device. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] The natural heart valves (i.e., the aortic valve, pulmonary valve, tricuspid valve, and mitral valve) play a key role in ensuring the flow of an adequate blood supply through the cardiovascular system. These heart valves may become less efficient due to congenital malformations, inflammatory processes, infectious conditions, or diseases. Treatment of such conditions can be accomplished by surgical repair or replacement of the valves through open heart surgery, or by the introduction and implantation of prosthetic devices using transcatheter or transapical techniques in a much less invasive manner than open heart surgery.

[0004] The heart's natural mitral valve connects the left atrium to the left ventricle. The mitral valve includes an annulus portion and a pair of leaflets. The annulus portion is the portion of the natural valve tissue surrounding the mitral valve orifice. The pair of leaflets extend downward from the annulus into the left ventricle. However, some valves fail to close properly during the contraction phase of heart contraction and valve regurgitation occurs when blood flows from the left ventricle into the left atrium. Mitral valve regurgitation has different causes. Some solutions to mitral valve regurgitation are to add artificial leaflets to the natural leaflets of the mitral valve so that the pair of leaflets are completely closed, thereby avoiding mitral valve regurgitation. However, when adding artificial leaflets to the natural leaflets, the artificial leaflets are difficult to release from the device and cannot be smoothly connected to the natural leaflets. Summary of the invention

[0005] The present invention provides an artificial valve release device, the purpose of which is to at least solve the technical problem that the artificial valve is difficult to release from the device, so that the artificial valve is connected to the natural valve. This purpose is achieved through the following technical solutions:

[0006] The artificial valve release device provided by the present invention comprises:

[0007] A mounting piece, to which an artificial valve leaflet is connected;

[0008] A supporting arm, wherein a limiting portion for limiting the mounting member is provided at the distal end of the supporting arm, the supporting arm is used to support the native valve through the mounting member, a puncture tube is provided in the supporting arm, and a puncture channel for the puncture tube to pass through is opened in the supporting arm, the puncture tube can pass through the mounting member, the artificial valve leaflet and the native valve in sequence after passing through the puncture channel, an anchor and a push rod are provided in the puncture tube, the push rod is located at the proximal end of the anchor, when the puncture tube punctures the artificial valve leaflet and the native valve and then withdraws into the puncture channel, the push rod is used to support the anchor to pass the anchor out of the puncture tube, and the anchor is used to fix the artificial valve leaflet and the native valve after passing through the puncture tube.

[0009] The artificial valve release device of the present invention is provided with a mounting piece and a supporting arm, wherein the mounting piece is connected to an artificial valve leaflet, and the supporting arm is provided with a limiting portion for limiting the mounting piece, a puncture tube is provided in the supporting arm, and an anchor and a push rod are provided in the puncture tube, and the push rod is located at the proximal end of the anchor. The puncture tube is used to puncture the artificial valve leaflet and the native valve. After the puncture is completed, the puncture tube is withdrawn into the puncture channel of the supporting arm. During the process of withdrawing the puncture tube into the puncture channel, the push rod supports the anchor so that the anchor is not withdrawn with the puncture tube, thereby allowing the anchor to pass out of the puncture tube. After passing out of the puncture tube, the anchor fixes the artificial valve leaflet and the native valve together. After the fixed connection, the mounting piece is detached from the limiting portion, and the artificial valve leaflet is also detached from the supporting arm along with the mounting piece, thereby allowing the artificial valve leaflet and the native valve to be fixedly connected, thereby solving the technical problem that the artificial valve is difficult to be released from the instrument and the artificial valve is connected to the natural valve.

[0010] In addition, the artificial valve release device according to the embodiment of the present invention may also have the following additional technical features:

[0011] In some embodiments of the present invention, the anchoring member includes an anchoring wire and a clamping member fixedly connected to the proximal end of the anchoring wire, the anchoring wire includes a disc-shaped segment and a straight segment connected to the proximal end of the disc-shaped segment, the clamping member is fixedly connected to the proximal end of the straight segment, and the puncture tube and the supporting arm are provided with a sliding groove for the clamping member to pass through.

[0012] In some embodiments of the present invention, the limiting portion is a rotating member, which is rotatably connected to the supporting arm. The rotating member includes a convex stop portion and a locking portion for overlapping with the mounting member. The mounting member is provided with a slot for inserting the convex stop portion, and the locking portion overlaps the slot wall of the slot.

[0013] In some embodiments of the present invention, the mounting member includes a supporting plate and a supporting column disposed at an obtuse angle to the supporting plate, and the slot is provided on the supporting column.

[0014] In some embodiments of the present invention, the limiting portion is a limiting groove formed on the supporting arm, the mounting member is provided with a puncture hole for the puncture tube to pass through, the mounting member is provided with a groove for the distal end of the supporting arm to be inserted, the groove wall of the groove is formed with a first inclined surface, and the groove wall of the limiting groove is formed with a second inclined surface for matching with the first inclined surface.

[0015] In some embodiments of the present invention, the groove is a U-shaped groove.

[0016] In some embodiments of the present invention, the limiting portion is a fixed tube sleeved on the outer periphery of the puncture tube, the mounting member is provided with an assembly hole that is interference fit with the fixed tube, and the proximal surface of the mounting member is parallel to the distal surface of the supporting arm.

[0017] In some embodiments of the present invention, the mounting member includes a support plate fitted with the artificial valve leaflet and a matching column extending from one side of the support plate.

[0018] In some embodiments of the present invention, the mounting member is provided with a fixing hole for connecting with an artificial valve leaflet.

[0019] In some embodiments of the present invention, after the anchoring member passes through the puncture tube, the native valve, the artificial valve leaflet and the mounting member are fixed between the disc-shaped segment and the clamping member. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limitations of the present invention. Moreover, the same reference numerals are used to represent the same components throughout the accompanying drawings.

[0021] In the attached picture:

[0022] Figure 1 It illustrates a schematic structural diagram of a mounting member fixed to a supporting arm in a first embodiment of an artificial valve release device of the present invention;

[0023] Figure 2 The schematic diagram of the installation structure of the installation member, the artificial valve leaflet and the rotating member in the first embodiment of the artificial valve release device of the present invention is illustrated;

[0024] Figure 3 The cross-sectional structure diagram of the first embodiment of the artificial valve release device of the present invention in which the mounting member is limitedly fixed to the supporting arm is shown;

[0025] Figure 4The schematic diagram of the structure of the puncture tube puncturing toward the distal end in the first embodiment of the artificial valve release device of the present invention is shown;

[0026] Figure 5 The schematic diagram of the structure of the first embodiment of the artificial valve release device of the present invention in which the puncture tube is withdrawn into the puncture channel is shown;

[0027] Figure 6 The schematic diagram of the structure of the first embodiment of the artificial valve release device of the present invention after the puncture anchoring is completed is shown;

[0028] Figure 7 It illustrates a schematic structural diagram of a second embodiment of the artificial valve release device of the present invention in which a mounting member is limitedly fixed to a supporting arm;

[0029] Figure 8 The schematic diagram of the structure between the mounting member and the supporting arm in the second embodiment of the artificial valve release device of the present invention is shown;

[0030] Fig. 9 A schematic cross-sectional structure diagram of a second embodiment of the artificial valve release device of the present invention in which a mounting member is limitedly fixed to a supporting arm;

[0031] Fig.10 The schematic diagram of the structure of the puncture tube puncturing toward the distal end in the second embodiment of the artificial valve release device of the present invention is shown;

[0032] Fig.11 A schematic diagram of the structure of the second embodiment of the artificial valve release device of the present invention in which the puncture tube is withdrawn into the puncture channel is shown;

[0033] Fig.12 A schematic diagram of the structure of the second embodiment of the artificial valve release device of the present invention in which the mounting member is separated from the supporting arm;

[0034] Fig.13 It illustrates the structural schematic diagram of the second embodiment of the artificial valve release device of the present invention after the puncture anchoring is completed;

[0035] Fig.14 It illustrates a schematic structural diagram of a mounting member fixed to a supporting arm in a third embodiment of an artificial valve release device of the present invention;

[0036] Fig.15 The schematic diagram of the structure between the mounting member and the supporting arm in the third embodiment of the artificial valve release device of the present invention is shown;

[0037] Fig.16 A schematic cross-sectional structure diagram of a mounting member fixed to a supporting arm in a third embodiment of an artificial valve release device of the present invention is shown;

[0038] Fig.17The schematic diagram of the structure of the puncture tube puncturing toward the distal end in the third embodiment of the artificial valve release device of the present invention is shown;

[0039] Fig.18 A schematic diagram of the structure of the artificial valve release device according to the third embodiment of the present invention in which the puncture tube is withdrawn into the puncture channel is shown;

[0040] Fig.19 The schematic diagram of the structure of the artificial valve release device in the third embodiment of the present invention after the puncture anchoring is completed;

[0041] Fig. 20 The schematic diagram of the structure of the artificial valve release device of the present invention entering into the heart is shown.

[0042] The symbols in the accompanying drawings are as follows:

[0043] 1. Artificial valve release device; 10. Support arm; 11. Puncture channel; 12. Puncture tube; 13. Anchoring member; 131. Anchoring wire; 131a. Disc segment; 131b. Straight segment; 132. Clamping member; 14. Push rod; 15. Slide; 16. Rotating member; 161. Protruding stop; 162. Clamping member; 163. Rotating hole; 17. Limiting groove; 171. Second inclined plane; 18. Fixing tube; 20. Mounting member; 21. Clamping groove; 22. Support plate; 23. Support column; 24. Puncture hole; 25. Groove; 251. First inclined plane; 26. Support plate; 27. Matching column; 28. Assembly hole; 29. ​​Fixing hole; 3. Artificial valve leaflet; 4. Native valve; 5. Native chordae tendineae; 6. Papillary muscle. DETAILED DESCRIPTION

[0044] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0045] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "a", "an", and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain", and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof.

[0046] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0047] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0048] It should be noted that "distal" and "proximal" are used as directional terms, which are commonly used in the field of interventional medical devices, where "distal" refers to the end away from the operator during surgery, and "proximal" refers to the end close to the operator during surgery. The direction of the central axis of rotation of an object such as a cylinder or a tube is defined as the axial direction, and the radial direction refers to the direction perpendicular to the axial direction (along the radius of the cross section).

[0049] See also Figures 1 to 20The artificial valve release device 1 of the present invention comprises a mounting member 20 and a supporting arm 10, the mounting member 20 is pre-connected with an artificial valve leaflet 3, the distal end of the supporting arm 10 is provided with a limiting portion for limiting the mounting member 20, the supporting arm 10 is used to support the native valve 4 through the mounting member 20, a puncture tube 12 is provided in the supporting arm 10, a puncture channel 11 for the puncture tube 12 to pass through is opened in the supporting arm 10, and the puncture tube 12 can pass through the puncture channel 11 and then The puncture tube 12 passes through the mounting part 20, the artificial valve leaflet 3 and the native valve 4 in sequence. An anchor 13 and a push rod 14 are provided in the puncture tube 12. The push rod 14 is located at the proximal end of the anchor 13. When the puncture tube 12 punctures the artificial valve leaflet 3 and the native valve 4 and then withdraws into the puncture channel 11, the push rod 14 is used to support the anchor 13 to push the anchor 13 out of the puncture tube 12. After the anchor 13 is pushed out of the puncture tube 12, it is used to fix the artificial valve leaflet 3 and the native valve 4 in connection.

[0050] Specifically, the artificial valve leaflets 3 are pre-connected to the mounting member 20, and the limiting portion at the distal end of the support arm 10 can limit the mounting member 20 so that the mounting member 20 and the artificial valve leaflets 3 are initially limited to the distal end of the support arm 10. When the support arm 10 limits the mounting member 20 to the distal end of the support arm 10 through the limiting portion, the support arm 10 can support the native valve 4 (such as Figure 3 , Fig. 9 and Fig.16 As shown). It can be understood that the native valve 4 is connected to intact native chordae tendineae 5 that have not prolapsed. Fig. 20One end of the native chord 5 is connected to the native valve 4, and the other end of the native chord 5 is connected to the cardiac papillary muscle 6. The native chord 5 has a certain pulling effect on the native valve 4, so that when the supporting arm 10 supports the native valve 4, the puncture tube 12 can complete the puncture of the artificial valve leaflet 3 and the native valve 4. After supporting the native valve 4, the puncture tube 12 located in the puncture channel 11 can pass through the puncture channel 11, and pass through the mounting part 20, the artificial valve leaflet 3 and the native valve 4 in sequence. Anchors 13 and push rods 14 are provided in the puncture tube 12. The push rod 14 is located at the proximal end of the anchor 13. After the puncture tube 12 punctures the artificial valve leaflet 3 and the native valve 4, the push rod 14 is withdrawn to the puncture channel 11. During the process, the push rod 14 supports the anchor 13 so that the anchor 13 is not withdrawn to the proximal end along with the puncture tube 12, thereby causing the anchor 13 to be pushed out of the puncture tube 12. After the anchor 13 passes through the puncture tube 12, the artificial valve leaflet 3 and the native valve 4 are fixedly connected. After the fixed connection, the mounting member 20 is detached from the limiting portion, and the artificial valve leaflet 3 is also detached from the supporting arm 10 along with the mounting member 20, so that the anchoring member 13 fixes and connects the native valve 4, the artificial valve leaflet 3 and the mounting member 20, solving the technical problem that the artificial valve is difficult to release from the instrument and connect the artificial valve to the natural valve. At the same time, because the length of the artificial valve leaflet is increased on the native valve, the problem of incomplete closure of the valve leaflet caused by too short valve leaflets is solved. Of course, by fixing the artificial valve leaflet on the native valve, the incomplete closure of the mitral valve leaflet caused by the expansion of the valve ring due to ventricular expansion can also be solved, and the reflux caused by incomplete closure of the mitral valve leaflet during ventricular contraction can be solved. The artificial valve leaflet in this application can be understood as an artificial valve, and the native valve can also be understood as a native valve leaflet, where the native valve can refer to the mitral valve, tricuspid valve, pulmonary valve, aortic valve, etc. In addition, artificial chords may be pre-connected to the artificial valve leaflets. When artificial chords are prolapsed and artificial chords need to be added, the artificial chords may be added at the same time as the artificial valve leaflets.

[0051] Furthermore, the anchoring member 13 includes an anchoring wire 131 and a clamping member 132 fixedly connected to the proximal end of the anchoring wire 131, the anchoring wire 131 includes a disc-shaped segment 131a and a straight segment 131b connected to the proximal end of the disc-shaped segment 131a, the clamping member 132 is fixedly connected to the proximal end of the straight segment 131b, and a slide groove 15 for the clamping member 132 to pass through is provided on the puncture tube 12 and the support arm 10. The clamping member 132 and the anchoring wire 131 can be fixedly connected by welding, crimping, bonding, etc. The anchoring wire 131 is a memory alloy wire, such as nickel-titanium wire, which can be shaped by nickel-titanium. In the free state, the disc-shaped segment 131a of the anchoring wire 131 will unfold into a large-area ring, which plays a limiting role; when the disc-shaped segment 131a is in the assembled state, that is, it is located in the puncture tube 12, the disc-shaped segment 131a can be extended into a straight wire and arranged in the puncture tube 12; the straight segment 131b of the anchoring wire 131 is a straight wire both in the free state and when it is located in the puncture tube 12. After the puncture tube 12 passes through the puncture channel 11 and punctures the artificial valve leaflet 3 and the native valve 4, during the puncture process of the puncture tube 12, the anchor 13 and the push rod 14 move distally with the puncture tube 12 to complete the puncture. After the puncture is completed, the puncture tube 12 is withdrawn toward the proximal end. During the withdrawal of the puncture tube 12 toward the proximal end, the anchor 13 will not be withdrawn with the puncture tube 12, but under the action of the push rod 14, the push rod 14 supports the anchor 13, so that the anchor 13 and the push rod 14 maintain the same position, and the push rod 4 can also be controlled to appropriately push the anchor 13 toward the distal end, and the puncture tube 12 is withdrawn. After the anchor 13 is withdrawn, because the anchor 13 remains stationary, or the anchor 13 is pushed by the push rod 14 to move a certain distance to the distal end, the anchor 13 passes through the puncture tube 12, so that the disc-shaped segment 131a of the anchor wire 131 becomes a free disc after being released and anchored on the native valve 4, and the straight segment 131b passes through the artificial valve leaflet 3 and the mounting member 20. Finally, the anchor 13 fixes the native valve 4, the artificial valve leaflet 3 and the mounting member 20 between its disc-shaped segment 131a and the clamp 132, completing the fixed connection between the native valve 4 and the artificial valve leaflet 3 (such as Figure 6 , Fig.13 and Fig.19 As shown). The puncture tube 12 and the support arm 10 are provided with a slide groove 15 for the clamp 132 to pass through, so that when the clamp 132 and the puncture tube 12 move toward the distal end at the same time, they can smoothly move relative to the support arm 10, and when the puncture tube 12 is withdrawn toward the proximal end alone, the clamp 132 can also move relative to the puncture tube 12 in the puncture tube 12. In order to make the native valve 4, the artificial valve leaflet 3 and the mounting member 20 fit better, it can be set that the sum of the thickness of the native valve 4, the thickness of the artificial valve leaflet 3 and the length between the proximal end and the distal end of the mounting member 20 is equal to the length of the straight segment 131b of the anchor wire 131.

[0052] Example 1

[0053] See also Figures 1 to 6 The limiting part at the far end of the supporting arm 10 is a rotating member 16, which is rotatably connected to the supporting arm 10. The rotating member 16 includes a convex stopper 161 and a clamping part 162 for overlapping with the mounting member 20. The mounting member 20 is provided with a clamping slot 21 for inserting the convex stopper 161, and the clamping part 162 overlaps the slot wall of the clamping slot 21. Figure 2 As shown, the mounting member 20 is provided with a fixing hole 29, and the fixing hole 29 is used to pre-connect the artificial valve leaflet 3 to the mounting member 20. The artificial valve leaflet 3 and the mounting member 20 can be fixed together by suturing, or by other methods such as bonding. There is no strict restriction on the connection method, as long as it can be fixedly connected. The support arm 10 can be provided with one or more, Figure 1 There are three supporting arms 10 shown in the figure. When there are multiple supporting arms 10, one artificial valve leaflet 3 can be supported by multiple supporting arms 10. At the same time, multiple anchors 13 can be anchored on one artificial valve leaflet 3 and the native valve 4, so that the connection between the artificial valve leaflet 3 and the native valve 4 is more fixed. Figure 1 It is a schematic diagram of the mounting member 20 and the artificial valve leaflet 3 being limited on the supporting arm 10. The rotating member 16 is rotatably connected to the supporting arm 10. A rotating hole 163 can be opened on the rotating member 16, and a hole coaxial with the rotating hole 163 can be opened on the supporting arm 10. Then, a pin or a rotating shaft can be inserted into the rotating hole 163 and the hole on the supporting arm 10, so that the rotating member 16 can be rotatably connected to the supporting arm 10.

[0054] Further, when the mounting member 20 is restricted on the supporting arm 10, as shown in FIG. Figure 3 As shown, the convex stopper 161 of the rotating member 16 is inserted into the slot 21 of the mounting member 20, and the locking portion 162 of the rotating member 16 overlaps the slot wall of the slot 21, so that the convex stopper 161 and the locking portion 162 are both locked into the slot 21, so that the mounting member 20 and the artificial valve leaflet 3 are fixed on the supporting arm 10. Figure 4 As shown, after the puncture tube 12 passes through the puncture channel 11, it passes through the mounting member 20, the artificial valve leaflet 3 and the native valve 4 in sequence. When passing through the mounting member 20, the puncture tube 12 pushes the convex stop 161 open, so that the convex stop 161 rotates and disengages from the slot 21, and the locking portion 162 also disengages from the slot 21 and no longer overlaps the slot wall of the slot 21, so that the mounting member 20 is no longer limited to the support arm 10 and can be released freely. Figure 5As shown, after the puncture tube 12 is completed, during the process of withdrawing to the puncture channel 11, the push rod 14 and the anchor 13 remain stationary and do not withdraw with the puncture tube 12, and the push rod 14 supports the clamp 132 of the anchor 13, and the push rod 14 can also be controlled to push the clamp 132 to the distal end appropriately. As the puncture tube 12 is withdrawn into the puncture channel 11, the disc-shaped segment 131a of the anchor wire 131 loses the restriction of the puncture tube 12 and is freely released and expanded above the native valve 4. The straight section 131b of the anchoring wire 131 passes through the native valve 4, the artificial valve leaflet 3 and the mounting member 20, and then the disc-shaped section 131a of the anchoring wire 131 cooperates with the clamp 132 under the mounting member 20 to complete the anchoring of the native valve 4 and the artificial valve leaflet 3; at the same time, the mounting member 20 is also released from the support arm 10, and the artificial valve leaflet 3 is also released from the support arm 10 along with the mounting member 20, solving the problem that the artificial valve is difficult to release from the device. Figure 6 As shown, the anchoring member 13 and the mounting member 20 are left in the body to fix the native valve 4 and the artificial valve leaflet 3, thereby further connecting the artificial valve leaflet to the native valve to solve the problem of incomplete valve leaflet closure caused by the valve leaflet being too short.

[0055] Furthermore, the mounting member 20 includes a support plate 22 and a support column 23 arranged at an obtuse angle to the support plate 22, and the slot 21 is provided on the support column 23. The support plate 22 is provided to increase the contact area between the mounting member 20 and the artificial valve leaflet 3, making the connection between the two more stable, and after the anchor member fixes the native valve 4, the artificial valve leaflet 3 and the mounting member 20 together, when the valve leaflet moves, the mounting member 20 and the artificial valve leaflet 3 have a larger contact area, thereby avoiding the tearing force on the artificial valve leaflet 3 and protecting the artificial valve leaflet 3 from being easily damaged. The support column 23 is arranged at an obtuse angle to the support plate 22, so that the slot 21 on the support column 23 can better cooperate with the rotating member 16, and the support plate 22 can also have better support force with the distal end of the support arm 10.

[0056] Example 2

[0057] See also Figures 7 to 13 The limiting portion is a limiting groove 17 formed on the supporting arm 10, a puncture hole 24 for the puncture tube 12 to pass through is formed on the mounting member 20, a groove 25 for the distal end of the supporting arm 10 to be inserted is formed on the mounting member 20, a first inclined surface 251 is formed on the groove wall of the groove 25, and a second inclined surface 171 for matching with the first inclined surface 251 is formed on the groove wall of the limiting groove 17. Figure 7 and Figure 8The figure shows that the supporting arms 10 are provided in multiple positions, and three supporting arms 10 are provided. The number of corresponding mounting members 20 is also three corresponding to the supporting arms 10. In this way, the anchor members 13 and mounting members 20 can be anchored at three positions on the artificial valve leaflets 3 and the native valve 4, respectively, so that the connection between the artificial valve leaflets 3 and the native valve 4 is more stable. Figure 7 FIG. 2 is a schematic diagram showing the mounting member 20 and the artificial valve leaflet 3 being initially connected to the supporting arm 10 in a limited position. Figure 8 It is a schematic diagram of the exploded structure between the mounting member 20 and the supporting arm 10.

[0058] The release process of the artificial valve release device 1 is as follows: Fig. 9 The distal end of the puncture tube 12 is initially inserted into the puncture hole 24 at the proximal end of the mounting member 20 and into the distal end of the support arm 10, so that at the beginning, the mounting member 20 is fixed and connected to the support arm 10, and the groove 25 provided on the mounting member 20 is provided for the distal end of the support arm 10 to be inserted, and the first inclined surface 251 is fitted with the second inclined surface 171. Then refer to the combination Fig.10 The puncture tube 12 punctures distally, passes through the artificial valve leaflet 3 and the native valve 4. During the puncture of the puncture tube 12, the push rod 14 and the anchor 13 also move synchronously with the puncture tube 12 toward the distal end; please refer to Fig.11 After the puncture is completed, the puncture tube 12 is withdrawn into the puncture channel 11 of the support arm 10. During the withdrawal of the puncture tube 12, the push rod 14 and the anchor 13 remain stationary and do not withdraw with the puncture tube 12. The push rod 14 supports the clamp 132 of the anchor 13. The push rod 14 can also be controlled to push the clamp 132 to the distal end appropriately. As the puncture tube 12 is withdrawn to the puncture channel 11, the disk segment 131a of the anchor wire 131 loses the restriction of the puncture tube 12 and is freely released and unfolded into a disk ring above the native valve 4. The straight segment 131b of the anchor wire 131 passes through the native valve 4, the artificial valve leaflet 3 and the mounting member 20. Then the disk segment 131a of the anchor wire 131 cooperates with the clamp 132 under the mounting member 20 to complete the anchoring of the native valve 4 and the artificial valve leaflet 3. Please refer to Fig.12 Under the guidance of the first inclined surface 171 and the second inclined surface 251, the valve slides away from the support arm 10, and the mounting member 20 and the artificial valve leaflet 3 are released from the support arm 10, thus solving the problem that the artificial valve is difficult to release from the device. Fig.13 As shown, the anchoring member 13 and the mounting member 20 are left in the body to fix the native valve 4 and the artificial valve leaflet 3, thereby further connecting the artificial valve leaflet to the native valve to solve the problem of incomplete valve leaflet closure caused by the valve leaflet being too short.

[0059] By directly providing the limiting groove 17 on the support arm 10, the mounting member 20 is initially limited within the support arm 10, thus avoiding the need for additional components, saving space and the weight of the device, and reducing the volume and weight of the artificial valve release device 1, which is convenient for operation and surgery. Furthermore, by forming a first inclined surface 251 on the groove wall of the groove 25 of the mounting member 20, and forming a second inclined surface 171 on the groove wall of the limiting groove 17 that cooperates with the first inclined surface, when the mounting member 20 is detached from the support arm 10, it only needs to slide away from each other under the guidance of the two inclined surfaces. Furthermore, the groove provided on the mounting member is a U-shaped groove, which helps the distal end of the support arm 10 to be smoothly inserted into the groove 25, making the operation more convenient.

[0060] Example 3

[0061] See also Figures 14 to 19 The limiting part is a fixing tube 18 sleeved on the outer periphery of the puncture tube 12, and a mounting hole 28 is provided on the mounting member 20 for interference fit with the fixing tube 18. The proximal end surface of the mounting member 20 is parallel to the distal end surface of the supporting arm 10. The mounting member 20 is provided with a fixing hole 29 for connecting with the artificial valve leaflet 3, and the mounting member 20 pre-connects the artificial valve leaflet 3 to the mounting member 20 through the fixing hole 29. Fig.14 and Fig.15 It is shown that there are multiple support arms 10, and three are provided. The number of corresponding mounting members 20 is also three corresponding to the support arms 10, so that the anchor members 13 and the mounting members 20 can be anchored at three positions on the artificial valve leaflets 3 and the native valve 4, respectively, so that the connection between the artificial valve leaflets 3 and the native valve 4 is more stable. Fig.14 FIG. 1 is an overall schematic diagram showing that the mounting member 20 is initially fixedly connected to the supporting arm 10, and the artificial valve leaflet 3 is fixedly connected to the mounting member 20; Fig.15 It is a schematic diagram showing the connection relationship between the mounting member 20 and the supporting arm 10. The figure shows that three supporting arms 10 are provided and three corresponding mounting members 20 are also provided. In order to more clearly show the relationship between the mounting member 20 and the supporting arm 10, the mounting member is not shown on one of the supporting arms 10.

[0062] The release process of the artificial valve release device 1 of this embodiment is roughly as follows: Fig.16, is a schematic diagram of the initial fixed connection of the mounting member 20 to the supporting arm 10, the fixing tube 18 is located in the puncture channel 11 of the supporting arm 10, and the fixing tube 18 is sleeved on the outer periphery of the puncture tube 12, and the distal end of the fixing tube 189 is inserted into the assembly hole 28 of the mounting member 20. Here, the fixing tube 18 and the assembly hole 28 of the mounting member 20 are interference fit, which does not mean that the two cannot be separated, but that there is a certain tight fit between the two, and the mounting member 20 cannot be easily separated from the fixing tube 18. The mounting member 20 is provided with a fixing hole 29 for connecting with the artificial valve leaflet 3, and the mounting member 20 pre-connects the artificial valve leaflet 3 to the mounting member 20 through the fixing hole 29. Please refer to Fig.17 The puncture tube 12 punctures distally, passes through the artificial valve leaflet 3 and the native valve 4. During the puncture of the puncture tube 12, the push rod 14 and the anchor 13 also move synchronously with the puncture tube 12 toward the distal end; please refer to Fig.18 After the puncture is completed, the puncture tube 12 is withdrawn into the puncture channel 11 of the supporting arm 10. During the withdrawal of the puncture tube 12, the push rod 14 and the anchor 13 remain stationary and do not withdraw with the puncture tube 12. The push rod 14 supports the clamp 132 of the anchor 13, and the push rod 14 can also be controlled to push the clamp 132 to the distal end appropriately. As the puncture tube 12 is withdrawn to the puncture channel 11, the disc-shaped segment 131a of the anchor wire 131 loses the restriction of the puncture tube 12 and is freely released above the native valve 4 to expand into a disc ring shape. The straight section 131b of 131 passes through the native valve 4, the artificial valve leaflet 3 and the mounting member 20, the puncture tube 12 is withdrawn into the puncture channel 11, and then the fixing tube 18 is controlled to be withdrawn proximally, that is, the distal end of the fixing tube 18 is withdrawn from the mounting member 20 to the puncture channel 11 of the supporting arm 10. Because the proximal surface of the mounting member 20 is parallel to the distal surface of the supporting arm 10, the disc-shaped section 131a of the anchoring wire 131 cooperates with the clamp 132 under the mounting member 20 to complete the anchoring of the native valve 4 and the artificial valve leaflet 3. Because the proximal surface of the mounting member 20 is parallel to the distal surface of the support arm 10, when the fixing tube 18 is withdrawn proximally, the distal surface of the support arm 20 presses against the proximal surface of the mounting member 20, and the support arm 10 and the mounting member 20 remain stationary, so that the fixing tube 18 can be detached from the assembly hole 18 and withdrawn into the puncture channel 11. In this way, the mounting member 20 is no longer restricted by the fixing tube 18, and the mounting member 20 is released from the support arm 10, and the artificial valve leaflet 3 is also released from the support arm 10, thereby solving the problem that the artificial valve is difficult to release from the instrument. After the puncture tube 12 and the fixing tube 18 are withdrawn to the puncture channel 11, the disc-shaped segment 131a of the anchoring wire 131 cooperates with the clamping member 131 under the mounting member 20 to complete the anchoring of the native valve 4 and the artificial valve leaflet 3. Fig.19As shown, after the puncture anchoring is completed, the anchor 13 and the mounting member 20 are left in the body to fix the native valve 4 and the artificial valve leaflet together, further realizing the connection of the artificial valve leaflet 3 to the native valve 4 to solve the problem of incomplete closure of the valve leaflet due to the valve leaflet being too short. Furthermore, the mounting member 20 includes a support plate 26 that fits the artificial valve leaflet 3 and a matching column 27 extending from one side of the support plate 26. The support plate 26 is provided to increase the contact area between the mounting member 20 and the artificial valve leaflet 3, making the connection between the two more stable, and after the anchor 13 fixes the native valve 4, the artificial valve leaflet 3 and the mounting member 20 together, when the valve leaflet moves, because the contact area between the mounting member 20 and the artificial valve leaflet 3 is large, the tearing force on the artificial valve leaflet 3 is avoided to protect the artificial valve leaflet 3 from being easily damaged. At the same time, the setting of the matching column 27 better matches with the distal end of the supporting arm 10, so that the mounting member 20 is easier to limit and fix with the supporting arm 10 at the beginning, and after the puncture is completed, the mounting member 20 is also more convenient to detach from the supporting arm 10.

[0063] The above are only preferred specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. An artificial valve release device, characterized in that: The artificial valve release device comprises: A mounting piece, to which an artificial valve leaflet is connected; A supporting arm, wherein a limiting portion for limiting the mounting member is provided at the distal end of the supporting arm, the supporting arm is used to support the native valve through the mounting member, a puncture tube is provided in the supporting arm, and a puncture channel for the puncture tube to pass through is opened in the supporting arm, the puncture tube can pass through the mounting member, the artificial valve leaflet and the native valve in sequence after passing through the puncture channel, an anchor and a push rod are provided in the puncture tube, the push rod is located at the proximal end of the anchor, when the puncture tube punctures the artificial valve leaflet and the native valve and then withdraws into the puncture channel, the push rod is used to support the anchor to pass the anchor out of the puncture tube, and the anchor is used to fix the artificial valve leaflet and the native valve after passing through the puncture tube.

2. The artificial valve release device according to claim 1, characterized in that: The anchoring member includes an anchoring wire and a clamping member fixedly connected to the proximal end of the anchoring wire, the anchoring wire includes a disc-shaped segment and a straight segment connected to the proximal end of the disc-shaped segment, the clamping member is fixedly connected to the proximal end of the straight segment, and a sliding groove for the clamping member to pass through is provided on the puncture tube and the supporting arm.

3. The artificial valve release device according to claim 2, characterized in that: The limiting part is a rotating part, which is rotatably connected to the supporting arm. The rotating part includes a convex stop part and a locking part for overlapping with the mounting part. The mounting part is provided with a slot for the convex stop part to be inserted, and the locking part overlaps the slot wall of the slot.

4. The artificial valve release device according to claim 3, characterized in that: The mounting member comprises a supporting plate and a supporting column arranged at an obtuse angle to the supporting plate, and the clamping slot is provided on the supporting column.

5. The artificial valve release device according to claim 2, characterized in that: The limiting portion is a limiting groove formed on the supporting arm, the mounting member is provided with a puncture hole for the puncture tube to pass through, the mounting member is provided with a groove for the distal end of the supporting arm to be inserted, the groove wall of the groove is formed with a first inclined surface, and the groove wall of the limiting groove is formed with a second inclined surface for matching with the first inclined surface.

6. The artificial valve release device according to claim 5, characterized in that: The groove is a U-shaped groove.

7. The artificial valve release device according to claim 2, characterized in that: The limiting part is a fixing tube sleeved on the outer periphery of the puncture tube, the mounting piece is provided with an assembly hole which is interference fit with the fixing tube, and the proximal end surface of the mounting piece is parallel to the distal end surface of the supporting arm.

8. The artificial valve release device according to claim 7, characterized in that: The mounting component includes a support plate fitted with the artificial valve leaflet and a matching column extending from one side of the support plate.

9. The artificial valve release device according to claim 1, characterized in that: The mounting piece is provided with a fixing hole for connecting with the artificial valve leaflet.

10. The artificial valve release device according to claim 2, characterized in that: After the anchoring member passes through the puncture tube, the native valve, the artificial valve leaflet and the mounting member are fixed between the disc-shaped segment and the clamping member.

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