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Artificial heart valve

An artificial heart valve and valve technology, applied in the field of medical devices, can solve problems affecting the delivery performance of the valve system, achieve the effects of improving convenience, reducing trauma, and solving reflux problems

Pending Publication Date: 2021-01-05
SHANGHAI HANYU MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the dual-stent design of the interventional artificial mitral valve replacement system can ensure the effective operation of the tri-leaflet pericardial valve, it affects the delivery performance of the valve system.

Method used

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Embodiment Construction

[0035] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as limiting the invention.

[0036] In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a de...

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Abstract

An artificial heart valve comprises a netting structure and a three-leaf valve, wherein the netting structure comprises a small-caliber section, a folding section and a large-caliber section, the small-caliber section is transited to the large-caliber section through the folding section, and in a natural state, the folding section is folded axially, so that the small-caliber section and the large-caliber section form an inner-layer structure and an outer-layer structure which are different in diameter, the small-caliber section, the folding section and the large-caliber section are axially stretched to form a single-layer structure when being axially stretched by external force, the three-leaf valve is arranged in the small-caliber section, and an anchoring part is arranged on the outer side face of the large-caliber section. The netting structure is made of a shape memory elastic material and is subjected to heat setting treatment, so that the netting structure is of a double-layer support structure on the basis of a single-layer structure, in the conveying process of the netting structure, a double-layer support is converted into a single-layer support to be compressed in a stretching mode, and compared with a compression mode of the double-layer support, the compression space is greatly reduced, and the conveying convenience is improved.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to an artificial heart valve for treating heart valve regurgitation. Background technique [0002] Mitral regurgitation (MR), the most common condition affecting the heart valves, is a chronic failing, progressive, and life-threatening condition in which the mitral valve of the heart does not close properly, causing blood to flow backwards and leak into the left atrium of the heart, If left untreated, MR can lead to heart failure and even death. According to statistics, the incidence rates of people over 65 and 75 years old are 6.4% and 9.3% respectively. With the development of economy and society and the aging of population, the incidence of mitral valve regurgitation shows a trend of obvious increase. [0003] Traditional open heart valve surgery is highly invasive. The surgeon makes a 6- to 8-inch incision along the middle of the chest, cuts through the sternum and stops the hear...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/24
CPCA61F2/2412A61F2/2418
Inventor 戴宇峰王智杰李涛
Owner SHANGHAI HANYU MEDICAL TECH CO LTD
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