Valve clip recovery device and recovery method

Abstract

The invention relates to the field of interventional medical instruments, in particular to a valve clip recycling device and method. The valve clip recycling device comprises a first cutting part, and the first cutting part is fixed to the far end of a driving part; the second cutting piece is matched with the first cutting piece, and the second cutting piece is rotationally connected with the driving piece; the driving part is rotated, when the first cutting part rotates to be coaxial with the second cutting part, the first cutting part and the second cutting part are driven to abut against each other to be used for cutting the valve leaflet, and the valve leaflet is cut through the first cutting part and the second cutting part. Cutting can be achieved only by positioning the valve clamp between the first cutting piece and the second cutting piece, operation is convenient, when the valve clamp is recycled, the valve clamp is completely placed in the containing cavity and then moved out of the body of a patient, the valve clamp is not prone to falling off, and then the sharp edge of the valve clamp is prevented from causing secondary damage to the patient.

Description

Technical Field

[0001] The 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] The commonly used treatment for heart valve disease in clinical practice is valve repair or valve replacement. Taking mitral valve disease as an example, using a clamping device to repair the mitral valve edge to edge is a common valve repair technique. Specifically, the anterior and posterior leaflets of the mitral valve are clamped together by a clamping device implanted in the body. By sacrificing the opening area of ​​the mitral valve, the mitral valve is changed from a single-hole structure to a double-hole structure, thereby reducing the regurgitation caused by leaflet insufficiency and improving the clinical condition. However, after living for several years, the patient may suffer from stenosis or poor coaptation of the valve due to ventricular enlargement, rheumatic mitral valve, inflammatory valve disease, severe calcification of the valve, hyperplasia of valve tissue caused by clamp compression and stimulation, and recurrent regurgitation or stenosis, requiring secondary repair. Before the secondary repair, the valve tissue at the sutured coaptation must be removed, or the valve clamp and the valve tissue fixed together by the valve clamp 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 judge based on experience 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 recovery device, comprising a first cutting member, the first cutting member being fixed to the distal end of a driving member;

[0006] a second cutting member, the second cutting member is adapted to the first cutting member, and the second cutting member is 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 at one end of the first cutting member and the second cutting member close to each other.

[0009] Preferably, a receiving chamber is formed inside the first cutting member and the second cutting member, and the receiving 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, so that a first accommodating cavity is formed in the first slice.

[0012] Preferably: the second cutting member comprises 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, so that a second accommodating cavity is formed in the second slice.

[0014] Preferably, the driving member comprises 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.

[0017] Preferably, it also includes a catheter, 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] A valve clip recovery method, using the valve clip recovery device, specifically comprises the following steps:

[0019] Place the guidewire from the apex to the left atrium;

[0020] Insert the outer sheath along the guide wire into the left ventricle;

[0021] The retrieval device is passed into the outer sheath and along the guidewire into the left ventricle;

[0022] After the retrieval device has completed multiple cuts, it is withdrawn outside the body along the guide wire;

[0023] Remove the outer sheath;

[0024] After the guidewire is removed, the cardiac apex is sutured.

[0025] Technical effects and advantages of the present invention:

[0026] 1. In the present invention, the upper and lower slicing method is adopted, and the valve leaflets are cut by the first cutting piece and the second cutting piece. 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.

[0027] 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 preventing the sharp edge of the valve clip from causing secondary damage to the patient.

[0028] 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, and continuous cutting can be achieved. 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.

[0029] 4. The first cutting piece and the second cutting piece of the present invention will not cause the generation of debris, thus avoiding stroke. Meanwhile, the cutting surface is smooth and is not prone to disease interference caused by subsequent damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of a cross-section of a heart with a valve clip implanted at the mitral valve position;

[0031] Figure 2 is a schematic structural diagram of a first cutting member and a second cutting member provided in an embodiment;

[0032] Figure 3 is a partial cross-sectional view of a first cutting member and a second cutting member provided in an embodiment;

[0033] Figure 4 is a schematic structural diagram of a first cutting member and a second cutting member behind a rotating driving member provided in an embodiment;

[0034] Figure 5 is a schematic structural diagram of a first cutting piece and a second cutting piece after cutting provided in an embodiment;

[0035] Figure 6 It is a structural schematic diagram of a valve clip recovery device provided in an embodiment of the present application;

[0036] Figure 7-17 is a schematic diagram of the working principle of a valve clip recovery device provided in an embodiment;

[0037] Fig.18 is a schematic structural diagram of a first cutting member and a second cutting member provided in another embodiment;

[0038] Fig.19is a schematic structural diagram of a first cutting member and a second cutting member behind a rotating driving member provided in another embodiment;

[0039] Fig. 20 is a cross-sectional view along the radial direction of the positioning member provided in another embodiment when it is rotated to the second base in the slide groove;

[0040] Fig.21 is a radial cross-sectional view of a second base provided in another embodiment;

[0041] Figure 22-23 It is a schematic diagram of the working principle of a valve clip retrieval device provided in another embodiment.

[0042] In the figure: 1. first cutting piece; 11. first base; 12. first slice; 121. first accommodating chamber; 2. second cutting piece; 21. second base; 211. sliding hole; 212. sliding groove; 22. second slice; 221. second accommodating chamber; 222. positioning hole; 3. driving piece; 31. rotating shaft; 32. handle; 4. guide wire; 5. catheter; 6. outer sheath; 71. first hemostatic valve; 72. second hemostatic valve; 8. positioning piece; 91. leaflet; 92. valve clamp. DETAILED DESCRIPTION

[0043] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The examples of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and design various embodiments with various modifications suitable for specific uses.

[0044] 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 a 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 first cutting member 1 and the second cutting member 2 are both provided with blades at one end close to each other, and the driving member 3 is rotated. When the first cutting member 1 rotates to be coaxial with the second cutting member 2, the first cutting member 1 and the second cutting member 2 are driven to abut against each other for cutting the leaflet 91. The leaflet 91 is cut by the first cutting member 1 and the second cutting member 2, and the cutting can be achieved by positioning the valve clip 92 between the first cutting member 1 and the second cutting member 2, which is easy to operate.

[0045] 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 in 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 blades of the first cutting piece 1 and the second cutting piece 2.

[0046] 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 injury to the patient.

[0047] In this embodiment, when it is necessary to recover multiple valve clips 92, the first cutting member 1 and the second cutting member 2 are used to first cut a 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 clip 92 tissues are cut at one time. Multiple valve clip 92 tissues are 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.

[0048] 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.

[0049] Furthermore, the first slice 12 is surrounded by 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 .

[0050] In this embodiment, the first base 11 is made of polymer materials, including but not limited to plastic, rubber and biopolymer materials.

[0051] In this embodiment, the first slice 12 is made of polymer material and is welded to the first base 11 .

[0052] 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.

[0053] 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 .

[0054] 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 .

[0055] 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.

[0056] 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 chamber, and the first slice 12 and the second slice 22 can cut multiple valve clip 92 tissues multiple times to recover multiple valve clips 92.

[0057] In this embodiment, the first slice 12 and the second slice 22 are both in a circular shape. When cutting the leaflet 91, it is only necessary to position the valve clamp 92 between the first slice 12 and the second slice 22, and then bring the first slice 12 and the second slice 22 closer to each other and abut against each other to complete the cutting of the leaflet 91. Compared with the prior art, the valve clamp is first captured by a capture wire, and then the leaflet 91 is cut by a cutter. The structure is simpler and the operation is more convenient.

[0058] In one embodiment, the diameter of the first slice 12 is the same as the diameter of the second slice 22. When cutting, the cutting of the leaflet 91 can be completed when the blades of the first slice 12 and the second slice 22 touch each other. This design will prevent the generation of debris and avoid causing a stroke. At the same time, the cutting surface is smooth and is not prone to disease interference caused by subsequent damage.

[0059] In another embodiment, the diameter of the first slice 12 is greater than the diameter 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 . When cutting, the first slice 12 is sleeved on the outer side of the second slice 22 .

[0060] 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. This design facilitates the positioning of the first slice 12 and the second slice 22, thereby facilitating the cutting of the leaflet 91.

[0061] In a further embodiment, referring to Figure 6As 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 through.

[0062] 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.

[0063] 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 fused with 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.

[0064] 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 vessel and block the blood flow to achieve hemostasis during the operation. This is a prior art and will not be elaborated here.

[0065] In this embodiment, the guide wire 4 is first extended from the apex to 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, and the doctor's operation difficulty is greatly reduced, thereby reducing the operation time.

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

[0067] Place the guidewire from the apex into the left atrium;

[0068] Insert the outer sheath along the guide wire into the left ventricle;

[0069] The retrieval device is passed into the outer sheath and along the guidewire into the left ventricle;

[0070] After the retrieval device has completed multiple cuts, it is withdrawn outside the body along the guide wire;

[0071] Remove the outer sheath;

[0072] After the guidewire is removed, the cardiac apex is sutured.

[0073] In a specific embodiment, a valve clip recovery method is provided, and the specific steps are as follows:

[0074] Reference Figure 7-9 As shown, S1, arrange the guide wire 4 from the apex into the left atrium, place the outer sheath 6 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;

[0075] The guide wire 4 guides the outer sheath 6 and the catheter 5 to avoid deviation of the outer sheath 6 and the catheter 5 during placement, making the operation more convenient.

[0076] Reference Fig.10 As shown, S2, rotating the rotating shaft 31, so that the first cutting member 1 avoids the valve clip 92;

[0077] 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 of the handle 32 .

[0078] Reference Fig.11 As shown, S3, pushing the rotating shaft 31 to make the first cutting member 1 enter the left atrium;

[0079] 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.

[0080] Reference Fig.12 As shown, S4, rotate and pull the rotating shaft 31 to make the first cutting member 1 contact the leaflet 91;

[0081] 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.

[0082] Reference Fig.13 As shown, S5, push the catheter 5 upward to make the first cutting member 1 contact with the second cutting member 2 and cut the leaflet 91;

[0083] The catheter 5 is pushed, 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 after cutting is smooth and is not prone to disease interference caused by subsequent damage.

[0084] Reference Figure 14-17 As shown, S6, withdraw the first cutting piece 1 and the second cutting piece 2 into the outer sheath 6, withdraw the first cutting piece 1, the second cutting piece 2 and the catheter 5, withdraw the outer sheath 6, and then withdraw the guide wire 4 to suture the apex of the heart;

[0085] 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 injury to the patient. In addition, multiple valve clips 92 can be recovered simultaneously, greatly reducing the operation time.

[0086] In another embodiment, referring to Fig.18 - Fig.21 As 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.

[0087] Furthermore, the second base 21 is provided with a slide groove 212 corresponding to the positioning member 8. The slide groove 212 is arc-shaped and is on a circle centered on the driving member 3. The slide 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 slide groove 212 and the rotating shaft 31 are symmetrically arranged along the axis of the second base 21, so that when the positioning member 8 rotates to the inner end of the slide 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, and no damage to other tissues will be caused.

[0088] 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 is connected to the slide groove 212 .

[0089] Reference Fig. 22 - Fig.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 clamp 92, and the positioning piece 8 is rotated from the inside of the second accommodating chamber 221 to the outside, and the rotating shaft 31 is pushed to make the first cutting piece 1 enter the left atrium, and the rotating shaft 31 is rotated and pulled. 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, and the catheter 5 is pushed upward to 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, and the first cutting piece 1, the second cutting piece 2 and the catheter 5 are withdrawn. After withdrawing the outer sheath 6, the guide wire 4 is withdrawn again, and the apex is sutured.

[0090] In this embodiment, the positioning member 8 is used to position the first cutting member 1 and the second cutting member 2, so as to facilitate the rotation of 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.

[0091] In another embodiment, the positioning member 8 is a columnar structure, and the surface of the positioning member 8 is smooth, and when rotating, it will not cause damage to other tissues. Preferably, the positioning member 8 is made of polymer materials, including but not limited to plastics, rubber and biopolymer materials.

[0092] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A valve clip recovery device, characterized in that: It comprises a first cutting member (1), wherein the first cutting member (1) is fixed to the distal end of a driving member (3); A second cutting member (2), the second cutting member (2) is adapted to the first cutting member (1), and the second cutting member (2) is rotatably connected to the driving member (3); The rotating driving member (3) drives the first cutting member (1) and the second cutting member (2) to abut against each other for cutting the leaflet (91) when the first cutting member (1) rotates to be coaxial with the second cutting member (2), and the leaflet (91) is cut by the first cutting member (1) and the second cutting member (2).

2. A valve clip retrieval device according to claim 1, characterized in that: The driving member (3) penetrates the second cutting member (2) along the axial direction, and the ends of the first cutting member (1) and the second cutting member (2) close to each other are both provided with blades.

3. A valve clip retrieval device according to claim 2, characterized in that: A receiving chamber is formed inside the first cutting piece (1) and the second cutting piece (2), and the receiving chamber is used to recover the valve clip (92).

4. A valve clip retrieval device according to claim 3, characterized in that: The first cutting member (1) comprises a first base (11) and a first cutting section (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).

5. A valve clip retrieval device according to claim 4, characterized in that: The second cutting member (2) comprises a second base (21) and a second cutting piece (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).

6. A valve clip retrieval device according to claim 1, characterized in that: The driving member (3) comprises a rotating shaft (31) and a handle (32), wherein 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).

7. A valve clip retrieval device according to claim 6, 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).

8. 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).

9. The valve clip retrieval device according to claim 1, characterized in that: It also comprises a catheter (5), wherein 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).

10. A valve clip recovery method, characterized in that: Using the valve clip retrieval device according to any one of claims 1 to 9, the specific steps are as follows: Place the guidewire from the apex into the left atrium; Insert the outer sheath along the guide wire into the left ventricle; The retrieval device is passed into the outer sheath and along the guidewire into the left ventricle; After the retrieval device has completed multiple cuts, it is withdrawn outside the body along the guide wire; Remove the outer sheath; After the guidewire is removed, the cardiac apex is sutured.

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