Transcatheter aortic valve and preparation method thereof

A technology of aorta and valve, which is applied in the field of medical devices, can solve problems such as coronary artery blockage, reduce the risk of being blocked, have a wide range of applications, and solve the effect of easy blockage of the coronary artery

Inactive Publication Date: 2019-01-04
KINGSTRONBIOCHANGSHU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when the above-mentioned aortic valve device is implanted, there is often a certain requirement for the height of the coronary ostium 203 (the height of the coronary ostium must be greater than 10 mm). For patients with a coronary ostium height lower than 10 mm, once the aortic valve device Implantation too deep is prone to the risk of coronary artery blockage

Method used

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  • Transcatheter aortic valve and preparation method thereof
  • Transcatheter aortic valve and preparation method thereof
  • Transcatheter aortic valve and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0043] image 3 Schematic diagram of the structure of the transcatheter aortic valve provided in Embodiment 1 of the present invention, Figure 4 A schematic structural view of the valve frame in the transcatheter aortic valve provided in Embodiment 1 of the present invention, Figure 5 It is a schematic diagram of the expanded structure of the valve skirt in the transcatheter aortic valve provided by Embodiment 1 of the present invention, Figure 6 A schematic diagram of the enlarged structure of the mesh in the valve skirt of the transcatheter aortic valve provided by Embodiment 1 of the present invention, Figure 7 Another enlarged structural schematic diagram of the mesh in the valve skirt of the transcatheter aortic valve provided by Embodiment 1 of the present invention;

[0044] This embodiment provides a transcatheter aortic valve, referring to Figure 3-7 As shown, the transcatheter aortic valve includes: a radially expandable mesh valve frame 10, a valve skirt 20 ...

Embodiment 2

[0068] Figure 8 A schematic structural diagram of the transcatheter aortic valve provided in Embodiment 2 of the present invention.

[0069] The difference between this embodiment and the above-mentioned embodiments is that in this embodiment, the valve frame 10 is specifically a balloon-expandable metal stent, and the valve frame 10 is specifically made of nickel-titanium alloy, stainless steel or cobalt-chromium alloy through laser engraving, electrochemical polishing and The radially shrinkable and expandable mesh valve frame 10 made by heat treatment, that is, in this embodiment, the material of the valve frame 10 can be nickel-titanium alloy, stainless steel or cobalt-chromium alloy. During production, laser engraving and electrochemical polishing are used. and heat treatment process to make the valve frame 10.

[0070] Among them, in this embodiment, the transcatheter aortic valve is specifically compressed into the balloon-expandable valve catheter by a crimping devic...

Embodiment 3

[0072] The present embodiment provides a method for manufacturing the above-mentioned transcatheter aortic valve, and the specific method includes the following steps:

[0073] Step 1): Sewing a plurality of leaflets 40 in the lumen of the valve holder 10;

[0074] Among them, before step 1), it also includes: the valve frame 10 is laser-engraved, electrochemically polished and heat-treated to make a self-expandable or balloon-expandable metal stent, and inlaid on the valve frame 10 to indicate the valve skirt. 20 Marking points 12 for the positions of the mesh holes 221. At the same time, when the valve frame 10 is a self-expanding metal stent, a plurality of auxiliary fixing devices 11 are formed on the top of the valve frame 10, and the auxiliary fixing devices 11 are used to connect with the delivery system.

[0075] Wherein, in this embodiment, the number of leaflets 40 is specifically 2-6, preferably 3, and the leaflets 40 are specifically made of animal pericardium such...

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Abstract

The invention provides a transcatheter aortic valve and preparation method thereof. The transcatheter aortic valve comprises a radially telescopic reticular valve frame, pedal skirts and multiple lobes, wherein the petal skirts are arranged on the inner side of the petal holder, the lobes are located in the lumen of the valve carrier, wherein the petal skirt is divided into a first region and a second region, the first region faces an inflow end of the aortic valve, the second region faces the outflow end of the aortic valve and the second region is provided with a mesh hole capable of communicating the inside and outside of the valve frame. The transcatheter aortic valve provided by the invention solves the problems that the coronary orifice is easy to be blocked after the aortic valve isimplanted in the prior art and the aortic valve is suitable for a patient.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a transcatheter aortic valve and a manufacturing method thereof. Background technique [0002] Transcatheter Aortic Valve Replacement (TAVR for short) is a minimally invasive valve replacement surgery, which refers to inserting the assembled aortic valve into the aortic root through the catheter to replace the original aortic valve. Functionally complete aortic valve replacement, the specific implantation process of TAVR is as follows: first compress the artificial valve into a set of transcatheter delivery system, and then use the delivery system to pass through the artery (such as femoral artery, subclavian artery, abdominal aorta, etc.) Or the apex of the heart delivers the valve to the aortic root and releases it, fixes it in the valve annulus, and replaces the human aortic valve through an artificial valve. TAVR has become the first choice for patients with aortic st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/24
CPCA61F2/2415A61F2/2418
Inventor 钟生平孟春旺李珂
Owner KINGSTRONBIOCHANGSHU CO LTD
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