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Invasive prosthetic heart valve

An artificial heart valve, interventional technology, applied in the direction of heart valves, medical science, prostheses, etc., can solve problems such as slippage, artificial heart valve size mismatch, valve function cannot be fully guaranteed, and achieve the effect of preventing slippage

Inactive Publication Date: 2019-04-02
启铭医疗器械(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages and problems of this kind of artificial valve are: its diameter is determined by the diameter of the balloon. If the diameter of the artificial valve is not selected at the beginning, or after some physiological changes, such as natural growth, pathological vasodilation, etc., the natural valve The caliber of the artificial valve may increase, but the caliber of the artificial valve cannot be increased adaptively, and the artificial valve may loosen or slip off, so only secondary balloon re-expansion can be performed.
Its shortcomings and problems are: the friction between the self-expanding artificial heart valve and the sheath is large, which affects the accurate release of the artificial valve.
[0008] The common disadvantages and problems of the above-mentioned balloon-expandable and self-expanding artificial heart valves are: the expansion and placement of the artificial valve is irreversible; whether it is a balloon-expandable or self-expanding artificial valve, the expansion of the compressed valve is an irreversible process , once the position and size are wrong, it cannot be moved and exchanged
Once the size of the required artificial valve is wrongly measured, the implanted artificial heart valve will be of different size, and the function of the valve cannot be fully guaranteed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A nonretrievable prosthetic pulmonary valve, see Figure 1-Figure 4 , Figure 1-Figure 4 is a structural schematic diagram of the first embodiment of the interventional artificial heart valve in the present invention, wherein figure 1 is a schematic diagram of the structure in the expanded state, figure 2 is a schematic diagram of the structure in the compressed state, image 3 with Figure 4 for figure 1 The right view of , where, image 3 In the open state of the valve leaflets (the free edges of each valve leaflet are separated), Figure 4 The valve leaflets are in the closed state (the free edges of each valve leaflet are in contact).

[0048] The non-retrievable artificial pulmonary valve 1 of this embodiment includes a tubular mesh frame 11 , valve leaflets 12 and a membrane 13 . The tubular network frame 11 is made of elastic or plastic deformable material, and is in the shape of a circular tube with the same size; the valve leaflets 12 and the covering m...

Embodiment 2

[0050] A nonretrievable prosthetic aortic valve, see Figure 5-Figure 7 , Figure 5-Figure 7 It is a structural schematic diagram of the second embodiment of the interventional artificial heart valve in the present invention, wherein Figure 5 is a schematic diagram of the structure in the expanded state, Image 6 is a schematic diagram of the structure in the compressed state, Figure 7 for Figure 5 A-A to the sectional view.

[0051] The non-retrievable artificial aortic valve 2 of this embodiment includes a tubular mesh frame 21 made of elastically deformable material, a valve leaflet 22 made of biological material, and a membrane 23 made of synthetic material. The tubular mesh frame 21 is in the shape of a circular tube with the same size. Three openings 215 are provided on the tubular mesh frame 21 to fit the coronary arteries, and barbs 216 are provided. In a natural state, the angle between the anti-slip barb 216 and the longitudinal axis of the bracket is between...

Embodiment 3

[0053] A retrievable prosthetic pulmonary valve, see Figure 8-Figure 11 , Figure 8-Figure 11 It is a structural schematic diagram of the third embodiment of the interventional artificial heart valve in the present invention, wherein Figure 8 with Figure 9 Schematic diagram of the structure in the expanded state ( Figure 9 Lamination not fully shown), Figure 10 for Figure 8 right view of the Figure 11 for Figure 10 B-B direction sectional view.

[0054] The retrievable artificial pulmonary valve 3 of the embodiment includes a tubular mesh frame 31 made of an elastically deformable material, a valve leaflet 32 ​​made of a synthetic material, and a membrane 33 made of a synthetic material. The tubular network frame 31 is in the shape of a circular tube with the same size, and is provided with a retractable frame 313 at its proximal end for cooperating with the implanting device. As shown in the figure, 311 is a deformable unit, and 312 is a coupling ring. 321 is...

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Abstract

The present invention provides an interventional prosthetic heart valve. The interventional prosthetic heart valve includes a tubular frame that can be radially deformed, at least one movable or switchable valve leaf is attached to the inside of the tubular frame, and the inner and / or outer side of the tubular frame is covered with a coating film. An implant device includes a delivery tube, a locking wire, a stay wire, a guide wire, a wire fixing bolt and a locking wire fixing bolt. The implant and recovery device includes a sheath tube, an open sheath tube, a recovery tube, and a recovery hook. The interventional prosthetic heart valve of the invention and the implantation and recovery device thereof are mainly used for human heart valve replacement, include replacement of the artificialbiological valve which is surgically implanted, thoracotomy is not required during a heart valve replacement surgery, extracorporeal circulation is not required, valve displacement is carried out on beating heart without general anesthesia, moreover, the patient does not need long-term anticoagulation, and the inserted valve can be removed by percutaneous intervention for valve replacement.

Description

technical field [0001] The invention relates to a human tissue substitute and its implantation and recovery device, in particular to an interventional artificial heart valve and its implantation and recovery device. Background technique [0002] The heart is the most important organ of the human body. The heart is divided into two parts, the left and the right, and each part includes the atrium and the ventricle. The left and right atria and right and left ventricles are separated by the atrial and ventricular septum, respectively. There are four heart valves in the heart, namely the tricuspid valve, pulmonary valve, mitral valve and aortic valve. In the human blood circulation system, the four heart valves play a vital role. The hypoxic blood in the systemic circulatory system enters the right atrium through the vena cava, and then enters the right ventricle through the tricuspid valve. The contraction of the right ventricle pushes the blood into the pulmonary circulatory...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/24
CPCA61F2/24A61F2/2409A61F2/2436A61F2/2439
Inventor 曾敏罗拉里
Owner 启铭医疗器械(上海)有限公司
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