Valve clip retrieval device

Abstract

The present invention relates to the field of interventional medical devices, and specifically to a valve clip recovery device and recovery method, comprising a first cutting member, which is fixed to the distal end of a driving member; a second cutting member, which is adapted to the first cutting member and is rotatably connected to the driving member; and a rotating driving member, which drives the first cutting member and the second cutting member to abut against each other for cutting the leaflets when the first cutting member rotates to be coaxial with the second cutting member. The leaflets are cut by the first cutting member and the second cutting member. In the present invention, the leaflets are cut by the first cutting member and the second cutting member, and the cutting can be achieved by simply positioning the valve clip between the first cutting member and the second cutting member. The operation is convenient. When recovering the valve clip, the valve clip is completely placed in the accommodating chamber and then removed from the patient's body. The valve clip is not easy to fall off, thereby avoiding the sharp edge of the valve clip from causing secondary damage to the patient.

Description

Technical Field

[0001] The present invention relates to the field of interventional medical devices, and in particular to a valve clip recovery device. Background Art

[0002] The incidence of mitral valve and tricuspid valve diseases remains high among adult heart valve diseases. For example, mitral regurgitation in mitral valve disease has a very serious impact on patients. Under normal circumstances, the mitral valve in the human heart acts as a hemostatic valve, preventing oxygen-rich blood from the lungs from flowing back into the left atrium. Once the mitral valve closes improperly or is dislocated, regurgitation will occur, which will significantly reduce the heart's pumping efficiency and even cause heart failure.

[0003] Clinically, the most common treatments for heart valve disease are valve repair or valve replacement. For example, for mitral valve disease, edge-to-edge repair of the mitral valve using a clip device is a common valve repair procedure. Specifically, an implanted clip clamps the anterior and posterior leaflets of the mitral valve together. By sacrificing the opening area of ​​the mitral valve, the mitral valve changes from a single-orifice structure to a double-orifice structure, thereby reducing regurgitation caused by leaflet regurgitation and improving clinical conditions. However, after several years of survival, patients may develop valvular stenosis or malapposition due to ventricular enlargement, rheumatic mitral valve disease, inflammatory valvular disease, severe valvular calcification, or valve tissue hyperplasia caused by clip compression, leading to recurrent regurgitation or stenosis and requiring a secondary repair. Prior to secondary repair, the valve tissue at the sutured joint must be removed, or the valve clip and the valve tissue held together by the clip must be removed.

[0004] The prior art discloses a valve clip retrieval device. Although this technology can solve the problem of lack of protection when the cutting tool enters the heart, the retrieval device has a complex structure and is cumbersome to operate. During intraoperative positioning, the doctor needs to use experience to judge whether the valve clip is accurately captured and then cut the valve leaflet with the cutting piece, which makes the operation difficult. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a valve clip retrieval device, comprising a first cutting member fixed to the distal end of a driving member;

[0006] a second cutting member, the second cutting member being adapted to the first cutting member and being rotatably connected to the driving member;

[0007] The driving member is rotated, and when the first cutting member rotates to be coaxial with the second cutting member, the first cutting member and the second cutting member are driven to abut against each other for cutting the leaflet, and the leaflet is cut by the first cutting member and the second cutting member.

[0008] Preferably, the driving member axially penetrates the second cutting member, and a blade is provided on one end of the first cutting member and the second cutting member close to each other.

[0009] Preferably, an accommodating chamber is formed inside the first cutting member and the second cutting member, and the accommodating chamber is used for recovering the valve clip.

[0010] Preferably, the first cutting member includes a first base and a first cutter;

[0011] One end of the first slice is axially fixed to the side wall of the first base, and the blade of the first slice is away from the first base, forming a first accommodating cavity in the first slice.

[0012] Preferably, the second cutting member includes a second base and a second cutter;

[0013] One end of the second slice is axially fixed to the side wall of the second base, and the blade of the second slice is away from the second base, forming a second accommodating cavity in the second slice.

[0014] Preferably, the driving member includes a rotating shaft and a handle, the handle is fixed to the proximal end of the rotating shaft, and the distal end of the rotating shaft is fixedly connected to the first base.

[0015] Preferably, the rotating shaft and the handle are both provided with a guide wire hole extending axially therethrough for inserting a guide wire.

[0016] Preferably, a through hole is provided at the connection between the first base and the rotating shaft, and the through hole is used to pass the guide wire through.

[0017] Preferably, a catheter is further included, the proximal end of the second base is fixedly connected to the distal end of the catheter, and the first cutting member, the second cutting member and the driving member are transported through the catheter.

[0018] The technical effects and advantages of the present invention are as follows:

[0019] 1. In the present invention, the leaflet is cut by the first cutting piece and the second cutting piece by adopting the upper and lower slicing method. The cutting can be achieved by simply positioning the valve clip between the first cutting piece and the second cutting piece, which is easy to operate.

[0020] 2. In the present invention, when the valve clip is recovered, the valve clip is completely placed in the accommodating chamber and then removed from the patient's body. The valve clip is not easy to fall off, thereby avoiding the sharp edge of the valve clip from causing secondary damage to the patient.

[0021] 3. In the present invention, after cutting one valve clip tissue, another valve clip tissue is continued to be cut, or multiple valve clip tissues are cut at one time. Multiple valve clip tissues are accommodated in the accommodating chamber, which can achieve continuous cutting. Finally, multiple valve clips are removed from the body at one time, which can reduce the operation time and greatly reduce the difficulty of operation. In addition, the first cutting piece and the second cutting piece have a simple structure and low cost.

[0022] 4. The first cutting piece and the second cutting piece of the present invention will not cause the generation of debris, thus avoiding causing a stroke. At the same time, the cutting surface is smooth and is not prone to disease interference caused by subsequent damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic cross-sectional view of a heart with a valve clip implanted at the mitral valve position;

[0024] Figure 2 is a schematic structural diagram of a first cutting member and a second cutting member provided in an embodiment;

[0025] Figure 3 is a partial cross-sectional view of a first cutting member and a second cutting member provided in an embodiment;

[0026] Figure 4 is a schematic structural diagram of a first cutting member and a second cutting member behind a rotary driving member provided in an embodiment;

[0027] Figure 5 is a schematic structural diagram of a first cutting piece and a second cutting piece after cutting provided in an embodiment;

[0028] Figure 6 Schematic diagram of the structure of the valve clip recovery device provided in an embodiment of the present application;

[0029] Figure 7-17 This is a schematic diagram of the working principle of a valve clip retrieval device provided in an embodiment;

[0030] Figure 18 is a schematic structural diagram of a first cutting member and a second cutting member provided in another embodiment;

[0031] Figure 19 is a schematic structural diagram of a first cutting member and a second cutting member behind a rotary driving member provided in another embodiment;

[0032] Figure 20 is a radial cross-sectional view of a positioning member provided in another embodiment, when the positioning member is rotated to the second base in the slide groove;

[0033] Figure 21 is a radial cross-sectional view of a second base provided in another embodiment;

[0034] Figure 22-23 It is a schematic diagram of the working principle of a valve clip retrieval device provided in another embodiment.

[0035] In the figure: 1. first cutting member; 11. first base; 12. first slice; 121. first accommodating chamber; 2. second cutting member; 21. second base; 211. sliding hole; 212. sliding groove; 22. second slice; 221. second accommodating chamber; 222. positioning hole; 3. driving member; 31. rotating shaft; 32. handle; 4. guide wire; 5. catheter; 6. outer sheath; 71. first hemostatic valve; 72. second hemostatic valve; 8. positioning member; 91. leaflet; 92. valve clip. DETAILED DESCRIPTION

[0036] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. The examples of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for specific applications.

[0037] See also Figure 1 - Figure 2 As shown, in this embodiment, a valve clip recovery device is provided, including a first cutting member 1, the first cutting member 1 is fixed to the distal end of the driving member 3, and a second cutting member 2, the second cutting member 2 is adapted to the first cutting member 1, the second cutting member 2 is rotatably connected to the driving member 3, the driving member 3 axially penetrates the second cutting member 2, and the ends of the first cutting member 1 and the second cutting member 2 close to each other are both provided with blades, and the rotating driving member 3, when the first cutting member 1 rotates to be coaxial with the second cutting member 2, drives the first cutting member 1 and the second cutting member 2 to abut against each other for cutting the leaflet 91, and the leaflet 91 is cut by the first cutting member 1 and the second cutting member 2, and the cutting can be achieved by simply positioning the valve clip 92 between the first cutting member 1 and the second cutting member 2, which is easy to operate.

[0038] In this embodiment, the valve clip 92 and the sandwiched tissue are removed by slicing from top to bottom. The first cutting piece 1 is rotated to avoid the valve clip 92 and enter the right ventricle from the left ventricle. The first cutting piece 1 is then restored to its initial angle and aligned with the lower second cutting piece 2. The first cutting piece 1 is pulled downward to wrap the valve clip 92 and the sandwiched tissue within the first cutting piece 1 and the second cutting piece 2. The purpose of removing the valve clip 92 and the sandwiched tissue is achieved through the close contact of the sharp edges of the first cutting piece 1 and the second cutting piece 2.

[0039] Furthermore, a accommodating chamber is formed inside the first cutting piece 1 and the second cutting piece 2, and the accommodating chamber is used to recover the valve clip 92. When recovering the valve clip, the valve clip 92 is completely placed in the accommodating chamber and then removed from the patient's body. The valve clip is not easy to fall off, thereby avoiding the sharp edge of the valve clip 92 from causing secondary damage to the patient.

[0040] In this embodiment, when multiple valve clips 92 need to be recovered, the first cutting member 1 and the second cutting member 2 are first used to cut the leaflet 91 connected to a valve clip 92, and the valve clip 92 falls into the accommodating chamber. The driving member 3 is operated to separate the first cutting member 1 and the second cutting member 2, and then another valve clip 92 is recovered. After cutting one valve clip 92 tissue, another valve clip 92 tissue is continued to be cut, or multiple valve clips 92 tissues are cut at one time. Multiple valve clips 92 tissues are all accommodated in the accommodating chamber, and continuous cutting can be achieved. Finally, multiple valve clips 92 are removed from the body at one time, which can reduce the operation time and greatly reduce the difficulty of operation. In addition, the first cutting member 1 and the second cutting member 2 have simple structures and low costs.

[0041] In a further embodiment, referring to Figure 3 - Figure 5 The first cutting piece 1 includes a first base 11 and a first slice 12. The first base 11 is cylindrical and has a smooth surface.

[0042] Furthermore, the first slice 12 is a hollow columnar structure, one end of the first slice 12 is axially fixed to the side wall of the first base 11 , and the blade of the first slice 12 is away from the first base 11 , forming a first accommodating cavity 121 in the first slice 12 .

[0043] In this embodiment, the first base 11 is made of polymer materials, including but not limited to plastic, rubber, and biopolymer materials.

[0044] In this embodiment, the first slice 12 is made of polymer material and is welded to the first base 11 .

[0045] In a further embodiment, the second cutting member 2 includes a second base 21 and a second cutter 22 . The second base 21 is cylindrical, and the surface of the second base 21 is smooth.

[0046] Furthermore, a sliding hole 211 is formed in the second cutting member 2 corresponding to the driving member 3 , so that the driving member 3 can move forward and backward and rotate along the sliding hole 211 .

[0047] Furthermore, the second slice 22 is a hollow columnar structure, one end of the second slice 22 is axially fixed to the side wall of the second base 21 , and the blade of the second slice 22 is away from the second base 21 , forming a second accommodating cavity 221 in the second slice 22 .

[0048] In another embodiment, the first base 11 is conical, so that the first base 11 can pass through the opening of the leaflet 91 more easily.

[0049] In this embodiment, when the first slice 12 and the second slice 22 are cut, the first accommodating cavity 121 and the second accommodating cavity 221 form an accommodating cavity. The first slice 12 and the second slice 22 can cut multiple valve clips 92 tissues multiple times and recover multiple valve clips 92.

[0050] In this embodiment, the first slice 12 and the second slice 22 are both in the shape of a circular ring. When cutting the leaflet 91, it is only necessary to position the valve clip 92 between the first slice 12 and the second slice 22, and then move the first slice 12 and the second slice 22 close to each other and abut against each other to complete the cutting of the leaflet 91. Compared with the prior art, the valve clip is first captured by a capture wire, and then the leaflet 91 is cut with a cutter. The structure is simpler and the operation is more convenient.

[0051] In one embodiment, the diameter of the first slice 12 is the same as the diameter of the second slice 22. During cutting, the leaflet 91 can be cut when the blades of the first slice 12 and the second slice 22 come into contact. This design prevents the generation of debris and avoids causing a stroke. At the same time, the cutting surface is smooth and is not prone to disease interference caused by subsequent damage.

[0052] In another embodiment, the diameter of the first slice 12 is larger than that of the second slice 22 , and the outer wall of the first slice 12 can slide along the inner wall of the second slice 22 . During cutting, the first slice 12 is sleeved on the outside of the second slice 22 .

[0053] Or the diameter of the first slice 12 is smaller than the diameter of the second slice 22, and the inner wall of the first slice 12 slides along the outer wall of the second slice 22. When cutting, the second slice 22 is sleeved on the outside of the first slice 12. Through this design, the positioning of the first slice 12 and the second slice 22 is facilitated, thereby facilitating the cutting of the leaflet 91.

[0054] In a further embodiment, referring to Figure 6 As shown, the driving member 3 includes a rotating shaft 31 and a handle 32. The handle 32 is fixed to the proximal end of the rotating shaft 31, and the rotating shaft 31 and the handle 32 are both provided with a guide wire hole extending axially therethrough for inserting the guide wire 4. The distal end of the rotating shaft 31 is fixedly connected to the first base 11, and a through hole is provided at the connection between the first base 11 and the rotating shaft 31, and the through hole is used to pass the guide wire 4 out.

[0055] Furthermore, a scale prompt is provided on the handle 32. When the handle 32 is rotated, the doctor can know the rotation angle of the handle 32 through the scale prompt, and then obtain the rotation angle of the rotating shaft 31 and the first cutting member 1, which is convenient for the doctor to operate.

[0056] In this embodiment, the proximal end of the second base 21 is fixedly connected to the distal end of the catheter 5. The second base 21 is made of polymer material and is welded to the catheter 5. The first cutting member 1, the second cutting member 2 and the driving member 3 are transported through the catheter 5 to avoid unnecessary damage to human tissue during transportation.

[0057] Furthermore, the proximal end of the catheter 5 is connected to the first hemostatic valve 71, and the catheter 5 passes through the outer sheath 6. The proximal end of the outer sheath 6 is fixedly connected to the second hemostatic valve 72. The channel inside the outer sheath 6 facilitates the catheter 5 to enter the left ventricle. The hemostatic valve is used to clamp the blood vessels and block the blood flow to achieve hemostasis during surgery. This is existing technology and will not be elaborated here.

[0058] In this embodiment, the guide wire 4 is first extended from the apex of the heart into the left atrium, the outer sheath 6 is put on the guide wire 4 and enters the left ventricle along the guide wire 4, and then the first base 11 and the rotating shaft 31 are put on the guide wire 4, and the catheter 5 enters the left ventricle through the channel formed by the outer sheath 6. The guide wire 4 guides the outer sheath 6 and the catheter 5 to avoid deviation during the placement of the outer sheath 6 and the catheter 5, so as to facilitate the positioning of the first slice 12 and the second slice 22, greatly reducing the difficulty of the doctor's operation and thus reducing the time of the operation.

[0059] In this embodiment, a valve clip recovery method is provided, and the specific steps are as follows:

[0060] Place the guidewire from the apex into the left atrium;

[0061] Place the outer sheath along the guide wire into the left ventricle;

[0062] The retrieval device is passed into the outer sheath and along the guidewire into the left ventricle;

[0063] After the retrieval device has completed multiple cuts, it is withdrawn outside the body along the guide wire;

[0064] Remove the outer sheath;

[0065] After the guidewire is removed, the cardiac apex is sutured.

[0066] In one embodiment, a valve clip recovery method is provided, and the specific steps are as follows:

[0067] Reference Figure 7-9 As shown, S1, the guide wire 4 is arranged to extend from the apex into the left atrium, and the outer sheath 6 is placed from the apex into the left ventricle. The first base 11 and the rotating shaft 31 are sleeved on the guide wire 4, and the catheter 5 enters the left ventricle through the channel formed by the outer sheath 6;

[0068] The guide wire 4 guides the outer sheath 6 and the catheter 5, thereby preventing the outer sheath 6 and the catheter 5 from being deviated during placement, making the operation more convenient.

[0069] Reference Figure 10 As shown, S2, rotating the rotating shaft 31, so that the first cutting member 1 avoids the valve clip 92;

[0070] The first cutting member 1 is driven to rotate by rotating the rotating shaft 31 , which makes the operation more convenient, and the doctor can observe the rotation angle of the first cutting member 1 conveniently through the scale prompt on the handle 32 .

[0071] Reference Figure 11 As shown, S3, pushing the rotating shaft 31 to make the first cutting member 1 enter the left atrium;

[0072] The first cutting member 1 enters the left atrium through the gap between the leaflets 91 . The contact surface between the circular first cutting member 1 and the atrium is relatively smooth and will not cause damage to other tissues.

[0073] Reference Figure 12 As shown, S4, rotate and pull the rotating shaft 31 to make the first cutting member 1 contact the leaflet 91;

[0074] After the operating handle 32 rotates the rotating shaft 31 to the initial angle, the rotating shaft 31 is pulled to drive the first cutting member 1 to contact the leaflet 91 to keep the first cutting member 1 stable.

[0075] Reference Figure 13 As shown, S5, the catheter 5 is pushed upward to make the first cutting member 1 contact the second cutting member 2 and cut the leaflet 91;

[0076] Push the catheter 5, and the second cutting piece 2 moves toward the first cutting piece 1 to cut the leaflet 91. Since the first cutting piece 1 is in contact with the leaflet 91 and its position is relatively stable, the cutting surface is smooth after cutting, and it is not easy to cause disease interference caused by subsequent damage.

[0077] Reference Figure 14-17 As shown, S6, the first cutting member 1 and the second cutting member 2 are withdrawn into the outer sheath 6, the first cutting member 1, the second cutting member 2 and the catheter 5 are withdrawn, and after the outer sheath 6 is withdrawn, the guide wire 4 is withdrawn, and the apex of the heart is sutured;

[0078] The valve clip 92 is recovered into the accommodating chamber of the first cutting piece 1 and the second cutting piece 2. The valve clip 92 is completely in the accommodating chamber. When it is removed from the patient's body, the valve clip 92 is not easy to fall off, thereby avoiding the sharp edge of the valve clip 92 from causing secondary damage to the patient. In addition, multiple valve clips 92 can be recovered simultaneously, greatly reducing the operation time.

[0079] In another embodiment, referring to Figure 18 - Figure 21As shown, on the basis of the above embodiment, it also includes a positioning member 8, which is fixed to the side end surface of the first base 11, and the positioning member 8 and the driving member 3 are located on the same side of the first base 11, and the other end of the positioning member 8 extends to the second base 21. When the rotating handle 32 drives the driving member 3 and the first base 11 to rotate, the positioning member 8 rotates with the first base 11.

[0080] Furthermore, the second base 21 is provided with a sliding groove 212 corresponding to the positioning member 8. The sliding groove 212 is arc-shaped and is on a circle centered on the driving member 3. The sliding groove 212 extends from the inside of the second base 21 to the outer edge of the second base 21, and the inner end of the sliding groove 212 is symmetrically arranged with the rotating shaft 31 along the axis of the second base 21, so that when the positioning member 8 rotates to the inner end of the sliding groove 212, the first cutting member 1 and the second cutting member 2 are coaxial, thereby facilitating the positioning of the first cutting member 1 and the second cutting member 2, and the contact surface with the atrium is relatively smooth, which will not cause damage to other tissues.

[0081] Furthermore, a positioning hole 222 is formed in the second slice 22 corresponding to the positioning member 8 . The positioning hole 222 extends along the axis of the second slice 22 and communicates with the sliding groove 212 .

[0082] Reference Figure 22 - Figure 23 As shown, in this embodiment, the guide wire 4 is arranged to extend from the apex to the left atrium, and the outer sheath 6 is placed from the apex to enter the left ventricle. The first base 11 and the rotating shaft 31 are sleeved on the guide wire 4, and the catheter 5 enters the left ventricle through the channel formed by the outer sheath 6. The rotating shaft 31 is rotated to make the first cutting piece 1 avoid the valve clip 92, and the positioning piece 8 is rotated from the inside of the second accommodating cavity 221 to the outside, pushing the rotating shaft 31 to make the first cutting piece 1 enter the left atrium, rotate and pull the rotating shaft 31, the rotating shaft 31 is located on one side of the leaflet 91, and the positioning piece 8 is located on the other side of the leaflet 91, so that the first cutting piece 1 contacts the leaflet 91, push the catheter 5 upward, make the first cutting piece 1 contact with the second cutting piece 2, and cut the leaflet 91, the positioning piece 8 enters the slide groove 212, and the first cutting piece 1 and the second cutting piece 2 are withdrawn into the outer sheath 6, the first cutting piece 1, the second cutting piece 2 and the catheter 5 are withdrawn, and after withdrawing the outer sheath 6, the guide wire 4 is withdrawn and the apex is sutured.

[0083] In this embodiment, the positioning member 8 is used to position the first cutting member 1 and the second cutting member 2, making it convenient to rotate the first cutting member 1 to be coaxial with the second cutting member 2, and the positioning member 8 is limited by the slide groove 212 to further improve the stability of the cutting leaflet 91.

[0084] In another embodiment, the positioning member 8 is a columnar structure with a smooth surface, which will not cause damage to other tissues when rotating. Preferably, the positioning member 8 is made of polymer materials, including but not limited to plastic, rubber and biopolymer materials.

[0085] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without making creative work should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention are implemented in accordance with conventional means in the field unless otherwise specified or limited.

Claims

1. A valve clip recovery device, characterized in that: It comprises a first cutting member (1), the first cutting member (1) being fixed to the distal end of the driving member (3); a second cutting member (2), the second cutting member (2) being adapted to the first cutting member (1), and the second cutting member (2) being rotationally connected to the driving member (3); A rotating driving member (3) drives the first cutting member (1) and the second cutting member (2) to abut against each other for cutting the valve leaflet (91) when the first cutting member (1) rotates to be coaxial with the second cutting member (2). The valve leaflet (91) is cut by the first cutting member (1) and the second cutting member (2). A receiving chamber is formed in the first cutting member (1) and the second cutting member (2), and the receiving chamber is used to recover the valve clip (92); The first cutting member (1) includes a first base (11), the second cutting member (2) includes a second base (21), the driving member (3) includes a rotating shaft (31) and a handle (32), the handle (32) is fixed to the proximal end of the rotating shaft (31), and the distal end of the rotating shaft (31) is fixedly connected to the first base (11); The cam is fixed to the side surface of the first base, and the cam and the rotating shaft are located on the same side of the first base. The other end of the cam extends to the second base. The second base is provided with a sliding groove corresponding to the cam. The sliding groove is on a circle centered on the rotating shaft. The sliding groove extends from the inside of the second base to the outer edge of the second base, and the inner end of the sliding groove and the rotating shaft are symmetrically arranged along the axis of the second base, so that when the cam rotates to the inner end of the sliding groove, the first cutting member and the second cutting member are coaxial.

2. A valve clip retrieval device according to claim 1, characterized in that: The rotating shaft (31) axially penetrates the second cutting member (2), and the ends of the first cutting member (1) and the second cutting member (2) that are close to each other are both provided with blades.

3. A valve clip retrieval device according to claim 2, characterized in that: The first cutting member (1) further comprises a first cutting piece (12); One end of the first slice (12) is axially fixed to the side wall of the first base (11), and the blade of the first slice (12) is away from the first base (11), forming a first accommodating cavity (121) in the first slice (12).

4. A valve clip retrieval device according to claim 2, characterized in that: The second cutting member (2) further includes a second slice (22); One end of the second slice (22) is axially fixed to the side wall of the second base (21), and the blade of the second slice (22) is away from the second base (21), forming a second accommodating cavity (221) in the second slice (22).

5. The valve clip retrieval device according to claim 1, characterized in that: The rotating shaft (31) and the handle (32) are both provided with a guide wire hole extending through the rotating shaft (31) and the handle (32) in the axial direction for inserting a guide wire (4).

6. The valve clip retrieval device according to claim 1, characterized in that: A through hole is provided at the connection between the first base (11) and the rotating shaft (31), and the through hole is used to pass the guide wire (4).

7. The valve clip retrieval device according to claim 1, characterized in that: It also includes a catheter (5), the proximal end of the second base (21) is fixedly connected to the distal end of the catheter (5), and the first cutting member (1), the second cutting member (2) and the driving member (3) are transported through the catheter (5).

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