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Valve support with reduced compressed length and valve replacement device with the valve support

A technology for compressing length and valve, applied in the field of medical devices, can solve problems such as affecting the compliance of the device, increasing the difficulty of delivery, and large curvature, and achieve the effects of reducing the risk of vascular complications, good compressibility, and simple stress state.

Active Publication Date: 2017-09-26
VENUS MEDTECH (HANGZHOU) INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] When the main part of the pulmonary valve stent adopts a rhombic structure, whether in the direction of length or diameter, the size changes before and after compression are large, and the implantation path of the pulmonary valve sequentially passes through the vein, right atrium, right ventricle, and main pulmonary artery. The curvature of the entry path is relatively large. If the compressed length of the pulmonary valve is too long, it will seriously affect the compliance of the device during delivery and increase the difficulty of delivery.

Method used

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  • Valve support with reduced compressed length and valve replacement device with the valve support
  • Valve support with reduced compressed length and valve replacement device with the valve support
  • Valve support with reduced compressed length and valve replacement device with the valve support

Examples

Experimental program
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Effect test

Embodiment 1

[0046] In the following, the present invention will be further explained by taking the pulmonary artery stent as an example in conjunction with the accompanying drawings.

[0047] Such as figure 1 , figure 2 As shown, the pulmonary artery stent with reduced compressed length includes a supporting grid and an inflow section 5 and an outflow section 1 respectively connected to the axial ends of the supporting grid, and one section of the supporting grid is a transition section 3 .

[0048] One end of the transition section 3 is connected to the inflow section 5 through the mesh section 13, and the other end of the transition section 3 is connected to the outflow section 1 through the mesh section 2, and the mesh section 2, the mesh section 13 and the transition section 3 together form a supporting network frame . Grid segment 2 is composed of continuous rhombus, grid segment 13 is composed of continuous semi-rhombic, inflow segment 5 expands radially outward to form flare com...

Embodiment 2

[0052] In addition to having the same structure of the transition section 3 as in Embodiment 1, this embodiment eliminates isolated end nodes in the pulmonary artery stent.

[0053] Such as image 3 As shown, the radial expansion of the inflow section 5 and the outflow section 1 is flaring. When released in the human body, the outflow section 1 of the pulmonary artery stent is the first release end, and the outflow section 1 is connected to all end nodes 4 on the corresponding side of the support grid. connected. image 3 In the figure, the posterior half of the pulmonary artery stent is omitted, and only the anterior half of the pulmonary artery stent is shown.

[0054] The outer edge of the outflow section 1 is surrounded by a number of curved support bars 6, and each adjacent four end nodes 4 are taken as a group, and in a group of end nodes 4, there is one support bar 6 and two connecting bars 8 , the two ends of the support bar 6 are respectively connected to the two en...

Embodiment 3

[0057] In the following, the present invention will be further explained by taking the aortic stent as an example in conjunction with the accompanying drawings.

[0058] Such as Figure 4 As shown, the aortic stent with reduced compressed length includes a support network frame and an outflow section 15 and an inflow section 10 connected to both axial ends of the support network frame, and one section of the support network frame is a transition section 11 .

[0059] One end of the transition section is connected to the outflow section 15 through the mesh section 9, and the other end of the transition section 11 is connected to the outflow section 10 through the mesh section 14, and the mesh section 14, the mesh section 9 and the transition section 11 together form a supporting grid. The mesh section 14 and the mesh section 9 are composed of continuous semi-rhombic shapes. Compared with the transition section 11, the inflow section 10 expands outward in the radial direction to...

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PUM

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Abstract

The invention discloses a valve support with reduced compression length and a valve replacement device with the valve support, wherein the valve support includes a tubular support grid, one section of the support grid is a transition section, and the transition section compresses The ratio of the axial lengths of the front and back is equal to 1. The axial length of the transition section is at least 25% of the total length of the supporting grid. The transition section is composed of several straight rods extending axially along the valve support, and each straight rod is evenly arranged along the circumferential direction. The valve support with reduced compression length of the present invention can reduce the length change of the valve support before and after compression, improve the bending compliance of the valve support, and at the same time ensure that the valve support maintains good compression performance and strength, so that the valve can smoothly reach the implant in the human body. Into the position, reduce the risk of vascular complications after surgery.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a valve support with reduced compressed length and a valve replacement device with the valve support. Background technique [0002] Tetralogy of Fallot is the most common cyanotic congenital heart disease in surviving infants, accounting for 10-15% of all congenital heart diseases. [0003] Tetralogy of Fallot consists of the following four malformations: (1) Pulmonary artery stenosis, infundibulum stenosis is more common, followed by infundibulum and valve combined stenosis, and the degree of stenosis can aggravate with age; (2) Ventricular septal defect, It belongs to the high membrane defect; (3) aortic straddle, the aorta straddles the left and right ventricle, with the development of the aorta, the right straddle phenomenon can gradually increase, and about 25% of the patients have a right aortic arch; (4) ) Right ventricular hypertrophy, which is caused by increase...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/24
CPCA61F2/2409A61F2/2418
Inventor 曾敏罗拉里王云兵
Owner VENUS MEDTECH (HANGZHOU) INC