Vascular protection and embolic material retriever

US6277139A · kind A · utility

Assignee

• Scion Cardio-Vascular, Inc. · US

Inventors

• Melvin E. Levinson · Miami, US
• George I. Golik · Miami, US

Key dates

• Filing date: Mar 31, 2000
• Grant date: Aug 21, 2001
• Expiry date: Mar 31, 2020

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2230/0067
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The vascular protection and embolic material retrieval device is used in connection with a guidewire and a catheter sheath during catheter based procedures. The device includes a discontinuous loop of memory sheath material having an open loop shape when the loop is not radially restrained in the catheter sheath. When the loop is disposed beyond the distal end of the catheter sheath, the loop is deployed and forms a discontinuous loop due to the memory characteristic of the loop material. The device includes a lead line having a proximal end attached to the guidewire and a distal end attached to the discontinuous loop. A substantially conical filter adapted to capture embolic material has an open conical end attached to the discontinuous loop and a conical end point attached to the guidewire. When the loop is disposed outboard of the catheter sheath, the filter unfurls forming a conical filter trap for embolic material. In order to collapse the filter, the guidewire is pulled such that the lead line, loop and conical filter moves inboard towards the sheath's distal end and the filter collapses about any embolic material trap therein.