Device for removing blood clots from blood vessels

Abstract

The invention relates to a device for removing foreign bodies and blood clots from hollow body chambers and blood vessels (12). Said device comprises at least one guiding wire (6, 7) that has a distal element (2) which is provided with radially outward-projecting fibers (3). The device further comprises a basket (1) or tube structure (16) which can be tightly folded under the external force applied by a microcatheter (13), be transported within the microcatheter, and unfold so as to reach the full basket (1) or tube structure (16) when the external force of the microcatheter (13) is canceled. The distal element (2) and the basket (1) or tube structure (16) can be longitudinally displaced relative to one another. The distal end of the basket (1) or tube structure (16) has an opening through which the distal element (2) can be inserted into the basket (1) or tube structure (16). The device according to the invention allows blood clots (5) to be easily and safely removed from blood vessels (12).

Description

[0001] This application is a divisional application of an invention patent application with an application date of September 20, 2007, an application number of 200780042855.9, and an invention title of "A device for removing thrombus from a blood vessel". technical field [0002] The present invention relates to a device for removing foreign bodies and thrombi from body cavities and blood vessels using at least one guide wire with a distal element. Background technique [0003] Thromboembolic diseases such as cardiac infarction, pulmonary embolism, peripheral thrombosis, organ embolism, etc., are typically caused by thromboembolism (hereinafter simply referred to as thrombus or thrombus), that is, the formation of a viscoelastic blood clot in a blood vessel that it completely or partially occludes , which includes platelets, fibrin, coagulation factors, etc. Blockage of an organ's arteries also disrupts the supply of oxygen and nutrients to the involved tissues. Disturbance...

AI Technical Summary

Problems solved by technology

However, a drawback associated with this device is that in order to cool the capture arms before they are released into the bloodstream and thus keep them below the transition temperature, it must be moved past the thrombus in a secondary conduit producing a cooling effect, or the heating system must be placed in Catheter interior with capture arms to allow access to transition temperature when thrombus is reached

Not only is the design of this configuration demanding and thus prone to perturbation, but the physical scale of the device precludes the treatment of vessels with particularly small lumens

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