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Heart valve prosthesis and valve stent thereof

A valve frame and artificial heart technology, applied in the field of medical devices, can solve the problems of reduced degree of freedom of the valve frame, strong sense of space of the valve frame, troublesome leaflet design, etc., to achieve easy leaflet design, simplified curve structure, and mechanical properties enhanced effect

Inactive Publication Date: 2013-08-14
KINGSTRONBIOCHANGSHU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The method of intersecting lines to prepare the frame is that one spatial entity intersects another spatial entity in space, and the formed intersection line is used as the curve of the frame. Although this method of preparing the frame simplifies the design of the mold, it is difficult to The prepared valve frame has a strong sense of space, and it is difficult to fit the spatial valve frame well with the flat leaflets, causing a lot of trouble for the later leaflet design
[0005] Arc, straight line and arc method are used to prepare the planar expansion of the petal frame. The crests and troughs of the planar expansion diagram are composed of circular arcs, and the peaks and troughs are connected by straight lines tangent to them. With this design, since the circular arc has only one radius, the degree of freedom of the petal frame reduced, making it difficult for the designed height of the valve frame to match the anatomical structure of the human body

Method used

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  • Heart valve prosthesis and valve stent thereof
  • Heart valve prosthesis and valve stent thereof
  • Heart valve prosthesis and valve stent thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] figure 1 It is a structural schematic diagram of the artificial heart valve frame of the present invention; figure 2 Schematic diagram of the expansion of the artificial heart valve frame; image 3 It is a schematic diagram of the connection structure of the petal frame unit.

[0028] This embodiment discloses an artificial heart valve frame, such as figure 1 As shown, it includes three sections of end-to-end valve frame units, and the three sections of valve frame units are 120° to each other, forming a spatial structure with three crests and three troughs, and each point on the artificial heart valve frame falls on on the same cylindrical surface, that is, figure 1 The top view is circular. The artificial heart valve frame unit is made of corrosion-resistant metal elastic wire.

[0029] Such as figure 2 As shown, after the valve frame unit is deployed along the tangential direction of the cylinder circumference, it includes an arc segment 1, an ellipse arc seg...

Embodiment 2

[0040] The artificial valve frame disclosed by this embodiment is basically the same as that of Embodiment 1, the difference is that: in this embodiment, the wire diameter d of the metal elastic wire is 0.6mm; the ratio b / a of the minor axis and the major axis of the ellipse arc is 0.7, the inner diameter r of the arc segment is the sum of the thickness of the valve leaflet and the thickness of the coating material; the angle β between the first straight line segment and the second straight line segment is 12 degrees, and is riveted with a sleeve to form a spatial structure. The artificial valve frame described in this embodiment also has the advantages of simple structure, easy manufacture, good mechanical properties, and easy to achieve precise fit with the valve leaflets.

Embodiment 3

[0042] The present embodiment discloses an artificial heart valve comprising an artificial heart valve frame and leaflets arranged on the artificial valve frame, the setting method of the leaflets and the valve frame is the same as that of the existing valve leaflets and the valve frame, Wherein the valve frame adopts the artificial heart valve valve frame described in embodiment 1 or embodiment 2.

[0043] The valve leaflets of the artificial heart valve described in this embodiment have a good fit with the valve frame, thereby improving the stability of the valve and prolonging the service life of the valve.

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Abstract

The invention provides a heart valve prosthesis and a valve stent thereof. The valve stent of the heart valve prosthesis comprises three valve stent units. The valve stent units are connected with one another in an end-to-end manner, points on the valve stent of the heart valve prosthesis fall on the surface of the same cylinder, each valve stent unit comprises an arc section, an elliptical arc section, a first straight line section and a second straight line section after being unfolded along the tangential direction of the circumference of the cylinder, two ends of each arc section are respectively connected with the corresponding first straight line section and the corresponding second straight line section, and one end, which is far away from the corresponding arc section, of each first straight line section is connected with the corresponding elliptical arc section. The heart valve prosthesis and the valve stent have the advantages that the heart valve prosthesis and the valve stent are simple, reasonable and compact in structure and good in mechanical property, and can be manufactured conveniently, various shortcomings of an existing valve stent of an existing heart valve prosthesis are overcome, and the valve stent can be precisely matched with valve leaflets.

Description

technical field [0001] The invention relates to medical device technology, in particular to an artificial heart valve frame and an artificial heart valve. Background technique [0002] Heart Valve Prosthesis (Heart Valve Prosthesis) is an artificial organ that can be implanted in the heart to replace the heart valve, allowing blood to flow in one direction and having the function of a natural heart valve. Artificial heart valves are generally composed of valve leaflets, valve frame, valve seat, suturing edge and coating materials. The valve leaflets are the core components of the valve, which play a switch role in the artificial heart valve. In each cycle of the artificial heart valve, it is required that the valve leaflet should be fully opened when it is opened, and completely closed when it is closed. These performances are not only related to the material of the valve leaflet and the sewing process, but more importantly, it must be matched with the valve frame. . The e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/24
Inventor 靳永富钟生平
Owner KINGSTRONBIOCHANGSHU CO LTD
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