Cannula with associated filter

US5769816A · kind A · utility

Assignee

• Embolx, Inc. · US

Inventors

• Denise Barbut · New York, US
• Jonathan Root · San Francisco, US
• Giovanni Pastrone · Los Gatos, US
• James M. Sellers · Portsmouth, US
• Robert Rizzari · Haverhill, US

Key dates

• Filing date: Apr 30, 1996
• Grant date: Jun 23, 1998
• Expiry date: Apr 30, 2016

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2210/127
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Devices and methods for filtering blood. The devices generally comprise: a mesh for filtering blood flowing within a blood vessel, particularly within an artery such as the aorta; a structure adapted to open and close the mesh within the blood vessel; and a means to actuate the structure. The methods generally include the following steps: introducing a mesh into a blood vessel to entrap embolic material; adjusting the mesh, if necessary, during the course of filtration; and removing the mesh and the entrapped foreign matter from the blood vessel. Additionally, visualization techniques are used to ensure effective filtration.