Prosthetic mitral valve delivery and anchoring device

Abstract

The present invention relates to an artificial mitral valve delivery and anchoring device, comprising an interventional catheter, a clamping device, a valve frame, an artificial valve, a clamping and pushing steel cable, a connecting rod and a valve pushing steel cable. The clamping device is first delivered to the heart through the interventional catheter, and the front leaflet of the mitral valve of the heart is clamped by the clamping device. Then, a curled and contracted valve frame with an artificial valve is delivered to the heart through the interventional catheter, and the valve frame is connected to the connecting rod on the clamping device. After the curled and contracted valve frame is expanded, it tightens the atrioventricular orifice. The clamping device is used to clamp the front leaflet of the mitral valve that is not tightly closed and the expanded valve frame to realize the anchoring connection between the artificial mitral valve and the atrioventricular orifice of the heart, and the connection is tight and reliable.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical auxiliary equipment, and in particular relates to an artificial mitral valve delivery and anchoring device. Background Art

[0002] Mitral regurgitation (MR) refers to the lax closure of the mitral valve during cardiac contraction, which causes blood to flow backward from the left ventricle to the left atrium. There are many other causes of valvular regurgitation, such as valve prolapse, valve sclerosis in the elderly, rheumatic valvular disease in teenagers and young and middle-aged people, infectious inflammation of the valve, heart enlargement, etc.

[0003] The manifestations of mitral regurgitation vary greatly according to the severity. Mild mitral regurgitation may not show clinical symptoms for a long time and has a good prognosis; severe mitral regurgitation can lead to pulmonary hypertension, atrial fibrillation, heart failure, shock and death. According to the severity of the disease, mitral regurgitation can be divided into acute and chronic MR. Patients with acute severe mitral regurgitation have poor tolerance, severe pulmonary edema and shock may occur, and the prognosis is very poor. For chronic severe MR, patients will develop symptoms within 6 to 10 years. The incidence of all-cause death, cardiac death, and cardiovascular events in asymptomatic patients within 5 years is 22±3%, 14±3%, and 33±3%, respectively. The annual mortality rate of patients with severe heart failure is as high as 34%. Many studies have shown that mitral regurgitation is a strong and independent predictor of the prognosis of patients with heart failure. The mortality rate of patients with moderate to severe mitral regurgitation is significantly higher than that of patients with no or mild mitral regurgitation.

[0004] There are currently about 20 million patients with mitral regurgitation in China. The current standard mitral valve surgery in China is an open sternotomy, using an extracorporeal circulation machine to stop the heart and implant a mechanical or biological artificial valve. Among them, the artificial biological valve is a central blood flow type, close to the function of a normal artificial valve, with good hemodynamic performance, minimal damage to blood components, low incidence of thromboembolism, and no need for lifelong anticoagulation after surgery, thus avoiding bleeding complications caused by excessive anticoagulant drugs. Although the technology of biological artificial valve replacement is relatively mature and its long-term durability has been clinically verified, the operation is extremely difficult and traumatic. Most patients are in a dilemma that medication cannot cure the disease, and there is an extremely high risk in the process of mitral valve repair surgery with open chest.

[0005] With the development of medical technology, the method of delivering stents by catheter technology with lower risks and trauma has been widely used. This technology has been used to deliver artificial heart valves in a similar way. The artificial heart valve is installed on the end part of the soft catheter in a curled state and advanced through the patient's blood vessels until the valve reaches the implantation position. The valve at the end of the catheter is then anchored at the defective natural valve by balloon expansion or self-expansion.

[0006] However, the unique anatomical structure of the mitral valve poses a huge challenge to transcatheter artificial mitral valve replacement. The mitral valve has a mitral structure, including connecting tissue starting from the heart wall, papillary muscles growing on the heart wall, and papillary muscles connected to a set of tendon-like strings or chordae. The chordae are connected to the edge of the mitral valve leaflet in a manner similar to parachute ropes. The shapes and sizes of the two mitral valve leaflets are different. The anterior leaflet of the mitral valve is connected to the outer wall or posterior wall of the heart. Both leaflets and chordae are confined to a less continuous structure commonly referred to as a valve ring. This results in a lack of muscle tissue around the mitral valve to support the artificial mitral valve, resulting in a lack of radial support from the surrounding heart tissue when the artificial mitral valve is installed, making it difficult to fix the artificial mitral valve in the heart and the structure is not strong enough. Summary of the invention

[0007] In summary, in order to overcome the deficiencies of the prior art problems, the present invention provides an artificial mitral valve delivery and anchoring device, which first delivers a clamping device to the heart through an interventional catheter, and uses the clamping device to clamp the anterior leaflet of the heart's mitral valve, and then delivers a curled and contracted valve frame with an artificial valve to the heart through the interventional catheter, connects the valve frame to the clamping device, and the curled and contracted valve frame expands to hold the atrioventricular orifice tightly, and uses the clamping device to clamp the anterior leaflet of the mitral valve that is not tightly closed and the expanded valve frame to achieve anchoring connection between the artificial mitral valve and the atrioventricular orifice of the heart, and the connection is tight and reliable.

[0008] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0009] An artificial mitral valve delivery and anchoring device, comprising: an interventional catheter, a clamping device, a valve frame, an artificial valve, a clamping and pushing steel cable, a connecting rod and a valve pushing steel cable,

[0010] The interventional catheter is a delivery catheter with a bendable head, which provides a delivery channel for the clamping device, the artificial valve and the valve frame;

[0011] The valve frame is a covered stent with a mesh hollow structure woven from memory alloy wires, and its cross-sectional shape is the same as that of the mitral valve of the heart, and is used to support an artificial valve;

[0012] The artificial valve is made of biological or non-biological flexible material and is fixedly connected to the inner cavity of the valve frame.

[0013] The valve pushing cable is detachably connected to the valve frame and can push the valve frame equipped with the artificial valve in the interventional catheter;

[0014] The clamping device comprises two clamping arms that can be opened and closed, and is used to clamp the anterior leaflet of the mitral valve of the heart. The inner side of the clamping device is provided with a connecting rod for connecting the valve frame;

[0015] The front end of the clamping and pushing steel cable is connected to the connecting rod in a detachable manner, and plays a guiding role when the valve pushing steel cable pushes the valve frame;

[0016] The lower end of the connecting rod is fixedly connected to the inner lower part of the clamping device, and the upper end of the connecting rod is connected to the front end of the clamping and pushing steel cable in a detachable connection manner.

[0017] The technical solution of the present invention can also be implemented as follows: the clamping device includes a fixed clamping arm, a movable clamping arm, a torsion spring and a wire drawing. The lower end of the fixed clamping arm is connected to the middle part of the movable clamping arm through a rotating shaft. The movable clamping arm can rotate relative to the fixed clamping arm. The rotating shaft is provided with a torsion spring. The tail end of the movable clamping arm is provided with a threaded hole. The front end of the wire drawing is fixed with a connecting screw. The connecting screw at the front end of the wire drawing is threadedly connected with the threaded hole at the tail end of the movable clamping arm. Pulling the wire drawing can make the movable clamping arm rotate around the rotating shaft, thereby making the movable clamping arm rotate and open relative to the fixed clamping arm. The torsion spring can make the opened movable clamping arm automatically close.

[0018] The technical solution of the present invention can also be implemented as follows: a blade-shaped clamping piece is provided at the front end of the movable clamping arm.

[0019] The technical solution of the present invention can also be implemented as follows: a clamping block is fixedly provided on the upper end of the connecting rod, a threaded hole is provided on the upper end of the clamping block, a screw is provided on the lower end of the clamping and pushing steel cable, the screw is threadedly connected to the threaded hole on the upper end of the clamping block, and an elastic telescopic pin is provided on the side of the clamping block.

[0020] The technical solution of the present invention can also be implemented as follows: a connecting plate and a connecting block are arranged on the inner side of the upper edge of the valve frame, the connecting plate is arranged on the side of the valve frame corresponding to the anterior leaflet of the mitral valve, the connecting plate is arranged on the side of the valve frame corresponding to the posterior leaflet of the mitral valve, the upper end of the connecting block is arranged with a threaded hole, the front end of the valve pushing cable is arranged with a screw, the screw is threadedly connected to the threaded hole on the connecting block, the valve pushing cable pushes the valve frame equipped with an artificial valve along the clamping pushing cable, and when the block at the upper end of the connecting rod of the clamping device passes through the through hole on the connecting plate, the valve frame is connected to the connecting rod under the action of the elastic telescopic pin.

[0021] The technical solution of the present invention can also be implemented as follows: the front end face of the interventional catheter is a slope, the front end face of the valve frame is also a slope, the inclination direction and slope of the front end of the valve frame are the same as the inclination direction and slope of the front end face of the interventional catheter, and the inclination direction is upward along the direction from the posterior leaflet to the anterior leaflet of the mitral valve.

[0022] The technical solution of the present invention can also be implemented as follows: a plurality of barbs for hooking and connecting with the tendineal chordae of the posterior leaflet of the mitral valve are arranged on the outer side of the side of the valve frame where the connecting block is arranged.

[0023] The technical solution of the present invention can also be implemented as follows: a circumferentially arranged outer turn-over edge is provided on the outer side of the upper edge of the valve frame.

[0024] The beneficial effects of the present invention are:

[0025] 1. The present invention first delivers a clamping device to the heart through an interventional catheter, and uses the clamping device to clamp the anterior leaflet of the mitral valve of the heart. Then, a curled and contracted valve frame with an artificial valve is delivered to the heart through the interventional catheter, and the valve frame is connected to the clamping device. The curled and contracted valve frame expands to hold the atrioventricular orifice tightly. The clamping device is used to clamp the anterior leaflet of the mitral valve that is not tightly closed and the expanded valve frame to achieve anchoring connection between the artificial mitral valve and the atrioventricular orifice of the heart, and the connection is tight and reliable.

[0026] 2. The present invention adopts a four-fold fixing structure for fixing the artificial valve. First, the anterior leaflet of the mitral valve is clamped by a clamping device; second, the atrioventricular orifice is tightened by the expanded valve frame; third, a barb connected to the posterior leaflet and chordae tendineae is provided on the outer side of the valve frame corresponding to the posterior leaflet of the mitral valve, and the posterior leaflet and chordae of the mitral valve are hooked by the barb; fourth, an outer turnout is provided on the upper end of the valve frame, which is covered on the valve ring on the atrial side of the mitral valve to fix the artificial valve in the axial direction. The artificial mitral valve is firmly fixed to the atrioventricular orifice of the patient's heart through the four-fold fixation, and the fixation is firm and reliable.

[0027] 3. The front end surface of the valve frame of the present invention is an inclined surface, and its inclination direction is upward along the direction from the posterior leaflet to the anterior leaflet of the mitral valve. After the valve frame of this structure is installed in the atrioventricular orifice of the patient's heart, the valve frame at the anterior leaflet of the mitral valve is short, and the valve frame at the posterior leaflet is long. When the valve frame of this structure remains in the heart, it will not affect the blood outflow from the left ventricle along the aorta.

[0028] 4. The present invention can deliver an artificial mitral valve to the atrioventricular orifice of the patient's left atrium and left ventricle through the femoral vein, without the need for open-chest surgery, thereby alleviating the patient's pain and allowing the patient to recover well and quickly after surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic structural diagram of the clamping device delivered along the interventional catheter of the present invention;

[0030] Figure 2 It is a schematic diagram of the structure after the clamping device of the present invention is separated from the interventional catheter;

[0031] Figure 3It is a schematic diagram of a state in which a movable clamping arm and a fixed clamping arm of the clamping device of the present invention are relatively opened;

[0032] Figure 4 It is a schematic diagram of the state when the clamping device of the present invention clamps the anterior leaflet of the mitral valve;

[0033] Figure 5 It is a schematic diagram of a pushing state of a valve rack equipped with an artificial valve according to the present invention;

[0034] Figure 6 It is a schematic structural diagram of the valve frame of the present invention after being connected to the connecting rod;

[0035] Figure 7 It is a schematic diagram of the connection state of the clamping block at the upper end of the connecting rod and the connecting plate at the upper end of the valve frame of the present invention;

[0036] Figure 8 It is a schematic diagram of the connection state between the connection block on the valve frame of the present invention and the valve pushing cable;

[0037] Fig. 9 It is a schematic structural diagram of the clamping piece at the front end of the movable clamping arm of the present invention. DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0039] like Figures 1 to 9As shown, an artificial mitral valve delivery and anchoring device comprises an interventional catheter 1, a clamping device 2, a valve frame 3, an artificial valve 4, a clamping and pushing cable 5, a connecting rod 6 and a valve pushing cable 7. The interventional catheter 1 is a delivery catheter with a bendable head, which provides a delivery channel for the clamping device 2, the artificial valve 4 and the valve frame 3; the front end surface of the interventional catheter 1 is an inclined surface, The valve frame 3 is a mesh hollow structure woven of memory alloy wires, and its cross-sectional shape is the same as that of the heart's mitral valve, and is used to support an artificial valve 4; the front end surface of the valve frame 3 is also an inclined surface, and its inclination direction is upwardly inclined from the posterior leaflet to the anterior leaflet of the mitral valve. The artificial valve 4 is made of biological or non-biological flexible materials and is fixedly connected to the inner cavity of the valve frame 3. The valve push cable 7 is detachably connected to the valve frame 3, and can push the valve frame 3 equipped with the artificial valve 4 in the interventional catheter 1; the outer side of the upper edge of the valve frame 3 is provided with a circumferentially arranged outer flange 35, and the inner side of the upper edge of the valve frame 3 is provided with a connecting plate 31 and a connecting block 32 The connecting plate 31 is arranged on the side of the valve frame 3 corresponding to the anterior leaflet of the mitral valve, and the connecting plate 31 is provided with a through hole 33 for the clamping and pushing cable 5 and the clamping block 8 to pass through. The connecting block 32 is arranged on the side of the valve frame 3 corresponding to the posterior leaflet of the mitral valve, and the upper end of the connecting block 32 is provided with a threaded hole. The front end of the valve pushing cable 7 is provided with a screw, and the screw is threadedly connected with the threaded hole on the connecting block 32. The valve pushing cable 7 pushes the valve frame 3 equipped with the artificial valve 4 along the clamping and pushing cable 5. When the clamping block 8 at the upper end of the connecting rod 6 of the clamping device 2 passes through the through hole 33 on the connecting plate 31, the valve frame 3 is connected to the connecting rod 6 under the action of the elastic telescopic pin 9. The outer side of the valve frame 3 provided with the connecting block 32 is provided with a plurality of barbs 34 for hooking and connecting with the tendinous chords of the posterior leaflet of the mitral valve.

[0040] The clamping device 2 includes two clamping arms that can be opened and closed, and are used to clamp the anterior leaflet of the mitral valve of the heart. The inner side of the clamping device 2 is provided with a connecting rod 6 for connecting the valve frame 3; the clamping device 2 includes a fixed clamping arm 21, a movable clamping arm 22, a torsion spring and a wire drawing 23. The lower end of the fixed clamping arm 21 is connected to the middle part of the movable clamping arm 22 through a rotating shaft 24. The movable clamping arm 22 can rotate relative to the fixed clamping arm 21. The rotating shaft 24 is provided with a torsion spring. The front end of the movable clamp is provided with a leaf-shaped clamping piece 25. The number of the leaf-shaped clamping pieces 25 is There are two clamping pieces 25 symmetrically arranged on both sides of the movable clamping arm 22. The leaf-shaped clamping pieces 25 can increase the clamping area so that the movable clamping arm 22 can clamp more anterior leaflets of the mitral valve. A threaded hole is arranged at the tail end of the movable clamping arm 22. A connecting screw is fixed at the front end of the wire drawing 23. The connecting screw at the front end of the wire drawing 23 is threadedly connected to the threaded hole at the tail end of the movable clamping arm 22. Pulling the wire drawing 23 can make the movable clamping arm 22 rotate around the rotating shaft 24, so that the movable clamping arm 22 rotates and opens relative to the fixed clamping arm 21, and the torsion spring can make the opened movable clamping arm 22 automatically close.

[0041] The lower end of the connecting rod 6 is fixedly connected to the inner lower part of the clamping device 2, and the upper end of the connecting rod 6 is connected to the front end of the clamping and pushing cable 5 in a detachable connection manner. The front end of the clamping and pushing cable 5 is connected to the connecting rod 6 in a detachable connection manner, which plays a guiding role when the valve pushing cable 7 pushes the valve frame 3; a clamping block 8 is fixedly provided at the upper end of the connecting rod 6, and a threaded hole is provided at the upper end of the clamping and pushing cable 5, and a screw is provided at the lower end of the clamping and pushing cable 5, and the screw is threadedly connected to the threaded hole at the upper end of the clamping block 8, and an elastic telescopic pin 9 is provided on the side of the clamping block 8.

[0042] When in use, the femoral vein of the patient is first punctured, and then the interventional catheter 1 is delivered to the patient's heart through the femoral vein. The front end of the interventional catheter 1 passes through the mitral valve and enters the patient's left ventricle, and a delivery channel is established in the patient's vein. Figure 1 As shown, the clamping device 2 is inserted into the interventional catheter 1, and then the clamping and pushing cable 5 is pushed, and the clamping device 2 is pushed through the inner cavity of the interventional catheter 1 to the left ventricle of the patient, and then, as shown in FIG. Figure 2 As shown, the interventional catheter 1 is pulled back to make the interventional catheter 1 withdraw from the left ventricle, exposing the clamping device 2 in the interventional catheter 1. The clamping and pushing steel cable 5 is kept stationary while the wire 23 is pulled back. The front end of the clamping and pushing steel cable 5 presses against the fixed clamping arm 21 of the clamping device 2, keeping the fixed clamping arm 21 stationary. The wire 23 is pulled back to make the movable clamping arm 22 of the clamping device 2 rotate around the rotating shaft 24 connected to the fixed clamping arm 21 and open, while compressing the torsion spring. Figure 3As shown, while keeping the relative positions of the clamping push cable and the drawing wire 23 unchanged, the clamping device 2 is slowly retracted. When the anterior leaflet of the mitral valve enters between the opened movable clamping arm 22 and the fixed clamping arm 21, the drawing wire 23 is released, and the movable clamping arm 22 is reset under the action of the torsion spring. Figure 4 As shown, the anterior leaflet of the mitral valve is clamped between the movable clamping arm 22 and the fixed clamping arm 21. The wire drawing 23 is rotated to screw the screw at the front end of the wire drawing 23 out of the threaded hole at the rear end of the movable clamping arm 22, and then the wire drawing 23 is pulled out of the interventional catheter 1.

[0043] The valve frame 3 equipped with the artificial valve 4 is installed on the clamping and pushing steel cable 5, and the clamping and pushing steel cable 5 passes through the through hole 33 at the upper end of the connecting plate 31 at the upper end of the valve frame 3, and the valve pushing steel cable 7 is pushed to push the valve frame 3 equipped with the artificial valve 4 into the interventional catheter 1, and push it forward along the interventional catheter 1 to the front end of the interventional catheter 1, and then, the interventional catheter 1 and the valve pushing steel cable 7 are pushed as a whole to push the valve frame 3 to the atrioventricular orifice between the left atrium and the left ventricle of the patient, and the state is as follows Figure 5 As shown, at this time, the through hole 33 on the connecting plate 31 at the upper end of the valve frame 3 passes through the block 8 at the upper end of the connecting rod 6 of the clamping device 2. After passing through the elastic retractable pin 9 on the block 8, the elastic retractable pin 9 extends out to clamp the valve frame 3. Then, the intervention catheter 1 is slowly pulled backward to expose the valve frame 3 with the artificial valve 4 from the front end of the intervention catheter 1. Figure 6 As shown, the curled and contracted valve frame 3 expands outward, pushes the clamping device 2 and the front and rear leaflets of the mitral valve outward, and the valve frame 3 holds the atrioventricular orifice tightly, while the barb 34 hooks the rear leaflet and tendon of the mitral valve. At this point, the fixed connection of the artificial mitral valve is completed. The clamping and pushing cable 5 is rotated to separate the screw at its front end from the threaded hole at the upper end of the clamping block 8, and the clamping and pushing cable 5 is taken out. The valve pushing cable 7 is rotated to separate the screw at its front end from the threaded hole on the connecting block 32 at the upper end of the valve frame 3, and the valve pushing cable 7 is taken out. Finally, the interventional catheter 1 is withdrawn from the femoral vein of the patient, and the femoral vein puncture of the patient is sutured and bandaged, and the replacement of the patient's artificial mitral valve is completed.

[0044] It should be noted that the above-described embodiments are illustrative of the technical solution of the present invention rather than limiting. Equivalent substitutions made by ordinary technicians in the relevant technical field or other modifications made according to the prior art should be included in the scope of rights required by the present invention as long as they do not exceed the concept and scope of the technical solution of the present invention.

Claims

1. A delivery and anchoring device for an artificial mitral valve, characterized in that: The invention comprises an interventional catheter (1), a clamping device (2), a valve frame (3), an artificial valve (4), a clamping and pushing steel cable (5), a connecting rod (6) and a valve pushing steel cable (7), The interventional catheter (1) is a delivery catheter with a bendable head, which provides a delivery channel for the clamping device (2), the artificial valve (4) and the valve frame (3); The valve frame (3) is a covered stent with a mesh-like hollow structure woven from memory alloy wires, and its cross-sectional shape is the same as that of the mitral valve of the heart, and is used to support the artificial valve (4); The artificial valve (4) is made of biological or non-biological flexible material and is fixedly connected to the inner cavity of the valve frame (3). The valve pushing cable (7) is detachably connected to the valve frame (3) and is capable of pushing the valve frame (3) equipped with the artificial valve (4) within the interventional catheter (1); The clamping device (2) comprises two clamping arms that can be opened and closed and are used to clamp the anterior leaflet of the mitral valve of the heart. The inner side of the clamping device (2) is provided with a connecting rod (6) for connecting to the valve frame (3); The front end of the clamping and pushing steel cable (5) is connected to the connecting rod (6) in a detachable connection manner, and plays a guiding role when the valve pushing steel cable (7) pushes the valve frame (3); The lower end of the connecting rod (6) is fixedly connected to the inner lower part of the clamping device (2), and the upper end of the connecting rod (6) is connected to the front end of the clamping and pushing steel cable (5) in a detachable connection manner. A clamping block (8) is fixedly provided at the upper end of the connecting rod (6), an elastic telescopic pin (9) is provided on the side of the clamping block (8), a threaded hole is provided at the upper end of the clamping block (8), a screw is provided at the lower end of the clamping and pushing steel cable (5), and the screw is threadedly connected to the threaded hole at the upper end of the clamping block (8). A connecting plate (31) is provided on the inner side of the upper edge of the valve frame (3). The connecting plate (31) is provided on a side of the valve frame (3) corresponding to the anterior leaflet of the mitral valve. A through hole (33) is provided on the connecting plate (31) for the clamping and pushing steel cable (5) and the clamping block (8) to pass through. When the clamping block (8) at the upper end of the connecting rod (6) of the clamping device (2) passes through the through hole (33) on the connecting plate (31), the valve frame (3) is connected to the connecting rod (6) under the action of the elastic telescopic pin (9).

2. The artificial mitral valve delivery and anchoring device according to claim 1, characterized in that: The clamping device (2) comprises a fixed clamping arm (21), a movable clamping arm (22), a torsion spring and a wire drawing (23); the lower end of the fixed clamping arm (21) is connected to the middle part of the movable clamping arm (22) via a rotating shaft (24); the movable clamping arm (22) can rotate relative to the fixed clamping arm (21); a torsion spring is arranged on the rotating shaft (24); a threaded hole is arranged at the rear end of the movable clamping arm (22); a connecting screw is fixed to the front end of the wire drawing (23); the connecting screw at the front end of the wire drawing (23) is threadedly connected to the threaded hole at the rear end of the movable clamping arm (22); pulling the wire drawing (23) can cause the movable clamping arm (22) to rotate around the rotating shaft (24), thereby causing the movable clamping arm (22) to rotate and open relative to the fixed clamping arm (21); and the torsion spring can cause the opened movable clamping arm (22) to automatically close.

3. The artificial mitral valve delivery and anchoring device according to claim 2, characterized in that: A blade-shaped clamping piece (25) is provided at the front end of the movable clamping arm (22).

4. The artificial mitral valve delivery and anchoring device according to claim 1, characterized in that: A connecting block (32) is arranged on the inner side of the upper edge of the valve frame (3). The connecting block (32) is arranged on the side of the valve frame (3) corresponding to the posterior leaflet of the mitral valve. A threaded hole is arranged on the upper end of the connecting block (32). A screw is arranged at the front end of the valve pushing cable (7). The screw is threadedly connected to the threaded hole on the connecting block (32). The valve pushing cable (7) pushes the valve frame (3) equipped with the artificial valve (4) along the clamping pushing cable (5).

5. The artificial mitral valve delivery and anchoring device according to claim 1, characterized in that: The front end surface of the interventional catheter (1) is an inclined surface, and the front end surface of the valve frame (3) is also an inclined surface. The inclination direction and inclination of the front end of the valve frame (3) are the same as the inclination direction and inclination of the front end surface of the interventional catheter (1), and the inclination direction is upward along the direction from the posterior leaflet to the anterior leaflet of the mitral valve.

6. The artificial mitral valve delivery and anchoring device according to claim 4, characterized in that: The outer side of the valve frame (3) on which the connection block (32) is provided is provided with a plurality of barbs (34) for hooking and connecting with the tendineal chordae of the posterior leaflet of the mitral valve.

7. The artificial mitral valve delivery and anchoring device according to claim 4, characterized in that: The outer side of the upper edge of the valve frame (3) is provided with an outer flange (35) arranged in a circumferential direction.

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