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Heart valve prosthesis

A technology of artificial heart valve and annular body, applied in the field of artificial heart valve and other advantages, can solve the problems of difficult processing and increased possibility of early failure of grafts, etc., to reduce or eliminate the formation of stagnant areas, reduce or Minimizes the effect of blood flow turbulence, promoting opening and closing conditions

Inactive Publication Date: 2009-06-03
亚历山大·V·萨姆科夫
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Designs that place high mechanical loads on the hinge mechanism lead to an increased likelihood of early failure of the graft
Difficulty in machining is another disadvantage of some existing tri-leaflet heart valves

Method used

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  • Heart valve prosthesis
  • Heart valve prosthesis
  • Heart valve prosthesis

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Embodiment Construction

[0022] The above and other features of the invention, including various novel details of structure and combination of parts, and other advantages, will now be more particularly described with reference to the accompanying drawings, and pointed out in the claims. It should be understood that the particular methods and apparatus embodying the invention are shown by way of example only and not as limitations of the invention. The principles and features of this invention may be employed in numerous and numerous embodiments without departing from the scope of the invention.

[0023] The present invention generally relates to prosthetic heart valves. More particularly, the present invention relates to a tri-leaflet mechanical heart valve.

[0024] figure 1 A prosthetic heart valve 10 is shown in , which includes an annular body 12 that houses a closure element 14 . The annular body 12 has a central axis (ie, annular body axis Z) and an outer surface 16 , the outer diameter of wh...

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Abstract

A heart valve prosthesis includes an annulus and a closing element having three leaflets. Hinge mechanisms are provided for attaching each leaflet to a top region of an interior surface of the annulus. In one example, the leaflets have convexo-concave surfaces and a non-uniform thickness. In another example, the top region of the interior surface has two sets of ledges which can be formed by intersecting three pairs of cylindrical surfaces. Ledges within each set are evenly spaced about the interior surface, a ledge in one set alternating with a ledge in the other set. In a further example, a bottom region of the interior surface is formed by intersecting three cylindrical surfaces.

Description

[0001] related application [0001] This application claims the benefit of Russian Patent Application No. 2006110832 filed April 4, 2006, the entire contents of which are hereby incorporated by reference. Background technique [0002] One type of artificial heart valve is a mechanical heart valve, usually made of artificial materials such as titanium, titanium alloys, graphite, and others. [0003] In a typical design, a mechanical heart valve consists of two leaflets held within a housing by a hinge. When the leaflets are open, blood flow through the bileaflet valve forms a central flow between the two leaflets and two side flows. Drawbacks associated with bi-leaflet designs include turbulence, velocity gradients, asynchronous opening of the leaflets, and recirculation of blood, causing increased stress on the heart. [0004] Trilobate designs have also been developed. For example, a heart valve having flat leaflets is known in the art as disclosed in US Patent No. 5,207,7...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/24
CPCA61F2/2403
Inventor 亚历山大·V·萨姆科夫
Owner 亚历山大·V·萨姆科夫
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