Transcatheter anti embolic filter for arterial and venous vessels

Abstract

An intra-vessel transcatheter filter device (1) designed to capture and remove emboli, thus preventing distal embolization, comprising: a tubular filter (2) comprising a flexible porous material and defined by a distal element and a proximal element, namely a main body (3) and a funnel (4); i. said main body (3) having a length adapted to extend within a suitable vessel zone; said main body (3) comprising: a) a distal end (5) that is adapted to be radially coupled with said zone and hermetically sealed to it when the device is in an active configuration, said distal end (5) being provided of selectively actionable closure means so that said distal end is designed to be open when the device is in an active configuration and closed before the device retraction, b) a proximal end (6); ii. said funnel (4) forming an extension of said main body (3), with the funnel base located at said proximal end (6). a support structure assembly (8) comprising: i. a supporting catheter (11) extending within said main body (3), ii. one radially expandable distal structure (9) fixed to said distal end (5), iii. one radially expandable proximal structure (10) positioned in correspondence of said proximal end (6), said distal structure (9) and said proximal structure (10) being fixed at least in an end to said supporting catheter (11).

Description

technical field [0001] The present invention relates generally to a transcatheter anti-embolic filter, and more particularly to an intra-aortic filter for protecting the brain and peripheral blood vessels from the potential spread of emboli. Background technique [0002] Clinical complications of transcatheter heart valve implantation (TAVI) are primarily related to its overlap with the diseased native valve. The presence of severe tissue calcification involving the valve device and surrounding tissue interferes with proper deployment of the prosthesis, creating conditions for embolic events. [0003] Surgical embolic events, so-called "macroembolic cerebral events", occur during TAVI implantation procedures (before dilation, implantation, or post-dilation), mainly in conjunction with usually targeting the brain (stroke), coronary arteries, or peripheral organs Embolization of large calcareous fragments of fibroelastic granules. However, stroke is the most feared clinical ...

AI Technical Summary

Problems solved by technology

However, they show some disadvantages, such as their location proximal to the native valve, which limits the possibility of directly manipulating it, and the difficulty of inserting other devices through the prosthesis due to catheter size limitations

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