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Tissue grasping devices and related methods

A technology of biasing and valves, applied in the field of devices and systems, medical methods, can solve problems such as addition

Active Publication Date: 2019-05-03
MEDFREE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

TEE primarily requires general anesthesia, adding significant risk to the elderly, frail patient population that typically undergoes this type of revision surgery

Method used

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  • Tissue grasping devices and related methods
  • Tissue grasping devices and related methods
  • Tissue grasping devices and related methods

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0154] I. Cardiac Physiology

[0155] Figure 1A-1 The middle diagram shows the left ventricle LV of a normal heart H in systole. The left ventricle LV is contracting and blood flows outward through the tricuspid valve (aortic valve) AV in the direction of the arrow. Backflow or "regurgitation" of blood through the mitral valve is prevented because the mitral valve MV is shaped as a "check valve" that prevents backflow when the pressure in the left ventricle is higher than the pressure in the left atrium LA. like Figure 1A-1 As illustrated in , the mitral valve MV includes a pair of leaflets with free edges FE that meet evenly to close. The opposite ends of leaflets LF are attached to surrounding heart structures along an annular region called the annulus AN. The free edges FE of the leaflets LF are secured to the inferior part of the left ventricle LV by the chordae CT (hereafter referred to as tendons) comprising branching tendons anchored over the lower surface of each...

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PUM

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Abstract

A clip for immobilizing leaflets of a cardiac or venous valve includes a hub having a pair of tangle resistant spring-biased outer arms coupled to an inferior end of the hub and a pair of tangle resistant spring-biased inner arms adjacent to the outer arms and coupled to a superior end of the hub. A delivery catheter may be used to position the valve clip adjacent a target valve while the outer and inner arms are biased in an opened position relative to each other. After the valve leaflets are located between the opened outer and inner arms, the biasing forces may be released to allow the clipto self-close the clip over the valve leaflets.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of Provisional Application No. 62 / 361,953 (Attorney Docket No. 52206-703.101), filed July 13, 2016, which is hereby incorporated by reference in its entirety. Background technique [0003] 1. technical field . The present invention generally relates to medical methods, devices and systems. In particular, the present invention relates to methods, devices and systems for endovascular, percutaneous or minimally invasive surgical treatment of body tissue, such as tissue approximations or valve repair. More particularly, the present invention relates to methods and devices for the repair of cardiac mitral and tricuspid valves, venous valves, and other tissue structures by minimally invasive and other procedures. [0004] Surgical repair of body tissue often involves tissue approximation and securing such tissue in the approximation arrangement. When repairing a valve, tissue approxima...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/00A61B17/02A61B17/04A61B17/06A61B17/072A61B17/08
CPCA61B17/122A61B17/1285A61B2017/003A61B2017/00694A61B2017/00783A61B2017/00849A61B2017/22059A61B2017/22062A61B2090/3735A61B2090/3995A61F2/2466A61F2/246
Inventor 拉古维尔·巴苏德
Owner MEDFREE INC
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