Wide-inlet large-flow heart valve prosthesis

A technology of artificial heart valve and inflow port, applied in the direction of heart valve, etc., can solve the problem of increasing the inlet area and so on

Inactive Publication Date: 2014-02-26
北京思达医用装置有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] Aiming at the above deficiencies, the present invention provides a wide-inlet and h...

Method used

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  • Wide-inlet large-flow heart valve prosthesis
  • Wide-inlet large-flow heart valve prosthesis
  • Wide-inlet large-flow heart valve prosthesis

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Embodiment Construction

[0018] At present, the development of artificial mechanical heart valves is mainly carried out in two aspects: one is material science, and new materials that are durable and non-thrombotic should be continuously explored. Second, in terms of structural design, it is necessary to further improve the blood flow field and hydrodynamic performance.

[0019] The present invention is aimed at the improvement of structural design.

[0020] 1. Design requirements for artificial mechanical heart valves

[0021] The requirements for the design of artificial mechanical heart valves should have: (1) good mechanical properties, manifested in good durability of the valve, low valve sound, high cavitation erosion threshold, and valve leaflet specific gravity similar to that of blood. (2) Good hemodynamic characteristics, manifested in small transvalvular pressure difference, low regurgitation flow, low energy loss, low intracardiac occupancy rate and ideal effective opening area. (3) Good...

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Abstract

The invention relates to a heart valve prosthesis device for replacing a damaged heart valve caused by congenital or acquired reasons and provides a wide-inlet large-flow heart valve prosthesis. The existing defects are overcome by increasing the inlet area. The heart valve prosthesis comprises a valve and a valve ring and is characterized in that the section area of an inflow port of the valve ring is larger than that of an outflow port. Compared with a common valve, the novel valve is structurally characterized in that a blood inflow face of the valve ring of the valve is a streamlined horn mouth, the inlet area is increased, under the same condition, compared with the common valve, outlet flow is larger, and haemodynamics performance of the valve is improved.

Description

technical field [0001] The present invention relates to implantable devices. More particularly, the present invention relates to heart valve prosthetic devices for the replacement of heart valves damaged by congenital or acquired causes. Background technique [0002] Artificial heart valves were first used clinically in 1960. After decades of development, with the increasingly optimized structure of artificial mechanical heart valves and the application of advanced technologies in related disciplines such as materials science, the performance of artificial heart valves has been greatly improved. The rate of thrombosis is greatly reduced, and clinically good results have been achieved. Among the currently widely used valves, biological valves are prone to calcification and damage and have a short service life. Mechanical valves account for about 70% of the entire world market, while in developing countries it is almost 100%. In my country, artificial mechanical heart valves ...

Claims

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Application Information

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IPC IPC(8): A61F2/24
Inventor 李海平郑光明
Owner 北京思达医用装置有限公司
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