Cannula with flow diversion mechanism and methods of use

Details Cannula with flow diversion mechanism and methods of use Cannula with flow diversion mechanism and methods of use

A - Human Necessities

61

M

A61M 5/14 (2006.01) A61F 2/01 (2006.01) A61M 5/165 (2006.01)

Patent

CA 2443841

A cannula (10) is described that includes a diverter mechanism in the form of a blast plate (20) deployable from within the lumen (13) of the cannula (10) and retractable from the lumen (13) of the cannula (10). The blast plate (20) may take the form of a planar surface, a curved surface, a membrane mounted on a wire ring, or a conical sleeve, or any other suitable shape. In use, the cannula (10) is inserted in a vessel (99), the blast plate (20) is deployed in the lumen (13) of the cannula (10), and blood flow is passed through the cannula (10) against the blast plate (20). Alternative devices and methods are also described.

Cette invention concerne une canule comprenant un mécanisme de déviation se présentant sous la forme d'une plaque soufflante pouvant être déployée depuis l'intérieur de la lumière de la canule, et pouvant être rétractée depuis la lumière de la canule. Cette plaque soufflante peut prendre la forme d'une surface plane, d'une surface incurvée, d'une membrane montée sur un anneau métallique, ou d'un manchon conique, ou de toute autre forme adéquate. Lors de son utilisation, la canule est insérée dans un vaisseau, la plaque soufflante est déployée dans la lumière de la canule au-delà de l'extrémité distale de la canule, et l'écoulement sanguin passe par la canule et contre la plaque soufflante. Cette invention concerne également d'autres dispositifs et méthodes.

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