Heart valve prosthesis, artificial valve formed by heart valve prosthesis and preparation method of artificial valve

A heart valve and prosthesis technology, applied in the field of heart valve prosthesis and its artificial valves and preparations, can solve the problems of unsatisfactory demand, prosthesis failure material and shape, etc., to reduce compliance mismatch and reduce stress Concentrated, less prone to stress fatigue effect

Pending Publication Date: 2021-11-30
SHANQIAN ZHUHAI BIOMATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is that the all-textile heart prosthesis disclosed in the prior art still has the problem of excessive fatigue in the bending area, which leads to the failure of the prosthesis or the material and shape cannot meet the requirements, thereby providing a heart valve prosthesis Artificial valve and preparation method thereof

Method used

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  • Heart valve prosthesis, artificial valve formed by heart valve prosthesis and preparation method of artificial valve
  • Heart valve prosthesis, artificial valve formed by heart valve prosthesis and preparation method of artificial valve
  • Heart valve prosthesis, artificial valve formed by heart valve prosthesis and preparation method of artificial valve

Examples

Experimental program
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Effect test

Embodiment 1

[0060] A heart valve prosthesis, such as figure 1 As shown, it includes a support element 1 in a tubular structure, and several leaflets 2 connected to the inner wall of the support element 1; The other two sides on 12 are fixed to each other to form sutures 13 of tubular structure; the leaflet 2 is composed of several leaflet layers stacked; the opposite sides of the leaflet 2 are the interweaving side and the free side respectively, and the interweaving side It is fixed between the two selvedges of the outer layer fabric 12 by a weaving method, and the free side is the selvedge.

[0061] The selvedge mentioned in the present invention is the edge formed after the warp thread loops back to the weaving area at the most edge weft thread to continue weaving, or the edge formed after the weft thread loops back to the weaving area at the most edge warp thread to continue weaving. The middle part of the selvedge has no ends, and the thread ends only exist at the two ends of the ed...

Embodiment 2

[0078] This embodiment provides another method for preparing a heart valve prosthesis. The structure of the prepared heart valve prosthesis is basically the same as in Example 1, the difference is that the material of the inner weft 22 in this embodiment is the same as that of the outer fabric 12. Similarly, in the preparation method, the difference is that when the outer weft and the outer warp are woven together, the outer weft is also used to weave the inner weft 22 at the same time. Concrete preparation process is as follows:

[0079] Step 1. Arranging several yarns made of PET to form outer warps, setting interweaving areas on the outer warps, setting a number of grasping ropes 3 above the outer warps, and adopting a yarn made of PET as the outer weft and interlacing the outer warps Weaving, and when weaving to the interweaving area, the yarn that constitutes the outside weft is extended and fixed on one of the grabbing ropes 3 and then returns to the interweaving area, a...

Embodiment 3

[0083] An artificial valve, comprising the heart valve prosthesis prepared in Example 1 or Example 2, and a bracket installed on the heart valve prosthesis. After the heart valve prosthesis in this embodiment is prepared, it can be processed by any post-processing technology such as thermoforming, insert molding, ultrasonic welding, solvent treatment, scouring (cleaning with solvent), etc., to construct the final geometric shape, After the construction is completed, it can be fixed with the bracket. Appropriate brackets specially designed for heart valves are fixed at the seamless connection position between the leaflet 2 and the support element 1 . The method of fixing the stent on the heart valve prosthesis depends on the geometry of the stent and the structure of the heart valve prosthesis, and the ways of fixing the heart valve prosthesis to the stent include but are not limited to suture, welding, adhesive bonding Together and so on. With the heart valve prosthesis prov...

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Abstract

The invention discloses a heart valve prosthesis, an artificial valve formed by the heart valve prosthesis and a preparation method of the artificial valve. The heart valve prosthesis comprises a supporting element of a tubular structure and at least two frondlets connected to the inner wall of the supporting element. The supporting element comprises an outer layer fabric with selvedges on the two opposite sides and a suture line fixing the other two sides of the outer layer fabric to form the tubular structure. Each frondlet is formed by stacking at least one frondlet layer; two opposite sides of the frondlet are respectively an interweaving side and a free side, the interweaving side is fixed between two selvedges of the outer fabric by a weaving method, and the free side is a selvedge. According to the heart prosthesis, the defect that the prosthesis is invalid or the material and the shape cannot meet the requirements due to the fact that the bending area of a full-textile heart prosthesis disclosed in the prior art is still overfatigued is overcome; and the durability is improved.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a heart valve prosthesis, the artificial valve it constitutes, and a preparation method. Background technique [0002] Currently, there are three types of artificial valves used in valve surgery, including 1) mechanical valves, 2) biological valves, and 3) synthetic polymer valves. [0003] Mechanical valves are made up of one or more valves mounted on an eccentric shaft and then secured to a safety valve seat on the heart muscle. These mechanical valves are extremely reliable in operation, but they are prone to disturbed blood flow and increase the risk of thrombosis. Therefore, the implantation of mechanical valves requires the patient to take anticoagulant drugs for life; and because the valve components of mechanical valves cannot be compressed enough into the catheter, and thus cannot be sent to the installation site by minimally invasive catheter implantation, so , mech...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/24A61L27/18A61L27/16A61L27/50
CPCA61F2/2412A61F2/2415A61L27/18A61L27/16A61L27/50A61L2430/20
Inventor 瑞恩·亨利福特肖家华
Owner SHANQIAN ZHUHAI BIOMATERIALS TECH CO LTD
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