Anti-regurgitation artificial heart valve

An artificial heart valve and anti-reflux technology, applied in the field of medical devices, can solve the problems of the convenience of positioning the native valve leaflet and the limitation of anchoring stability, and achieve excellent ductility and radial mechanical properties, small alignment deviation, and extension. good effect

CN113893066APending Publication Date: 2022-01-07环心医疗科技苏州有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2022-01-07

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Abstract

The invention discloses an anti-regurgitation artificial heart valve, which comprises a tubular support, skirt cloth covering the inner surface of the tubular support, a plurality of artificial valve leaflets fixed in the tubular support, and an anti-regurgitation ring arranged outside the tubular support in a sleeving mode, wherein the anti-regurgitation ring comprises a plurality of anchoring parts; the anchoring parts are designed into a unique shape with double supporting feet at the bottom and a deformable grid in the middle; one pair of side ribs is inserted along two sides of the interior of the semilunar valve; a first bottom rib and a second bottom rib are abutted against two sides of the bottom of the aortic sinus so as to form two acting points; and a contact area is increased through a grid consisting of inner ribs. Compared with most existing technical schemes adopting a U-shaped or V-shaped simple outer frame to exert force at a single point, when the anchoring parts and the native valve leaflet are inserted and positioned, an alignment deviation is small, positioning is accurate and convenient, the anchoring parts have a good shaping effect on the native valve leaflet, a clamping area is large, and the native valve leaflet can be more stably and firmly clamped when the native valve leaflet is clamped inside and outside the anti-regurgitation ring and the tubular support.
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Description

technical field

[0001] The invention relates to the field of medical devices, in particular to an anti-reflux artificial heart valve. Background technique

[0002] Aortic valve disease is a common heart valve disease, in which the prevalence of aortic regurgitation and aortic stenosis ranks second and third among all heart valve diseases, and increases with age, 65 years old In the above elderly population, the prevalence of aortic valve disease is as high as 3%. Symptomatic severe aortic stenosis and regurgitation have a very poor prognosis in the natural course of the disease. The two-year survival rate is 50%, and the five-year survival rate is only 20%. Valve replacement surgery is an effective treatment. Many symptoms, poor left ventricular function and unable to withstand traditional surgical thoracotomy.

[0003] In recent years, transcatheter valve implantation / repair has gradually matured and been widely used. In particular, transcatheter aortic valve implantation...

Examples

Embodiment Construction

[0026] Below in conjunction with specific embodiment, content of the present invention is described in further detail:

[0027] combine Figure 1 to Figure 6 , the present embodiment is an anti-reflux artificial heart valve, comprising a tubular stent 1, a skirt cloth 2 coated on the inner surface of the tubular stent 1, three artificial valve leaflets 3 fixed inside the tubular stent 1, and sleeved on the tubular stent. The anti-reflux ring 4 on the outside of the stent 1, the anti-reflux ring 4 includes three anchoring parts 5, and the anchoring parts 5 are used to extend into the original leaflet anti-reflux ring 4 and limit the position.

[0028] in:

[0029] The anti-reflux ring 4 is ring-shaped in a natural state, and is formed by connecting three anchoring parts 5 end to end. One inner rib 7, the first bottom rib 8 and the second bottom rib 9 extended from the lower ends of a pair of side ribs 6, the side ribs 6 are inclined from top to bottom towards the middle of th...