Touch down of blood pump impellers

US6761532B2 · kind B2 · utility

Assignee

• VASCOR, INC. · US

Inventors

• Christopher Capone · Pittsburgh, US
• Ruey Dempsey · Greensburg, US
• Marlin S. Heilman · West Deer Township, US
• Steve A. Kolenik · Leechburg, US
• Daniel Moore · Pittsburgh, US
• Carl Parisi · Kittanning, US
• Edward K. Prem · Washington, US
• Richard Andrew Sofranko · South Park Township, US
• David Borzelleca · Wexford, US
• Greg Burgreen · Bakerstown, US
• John A. Holmes · Pittsburgh, US
• Zhongjun Wu · Eldersburg, US
• Ralph Hebbert · Wexford, US
• James F. Antaki · Pittsburgh, US

Key dates

• Filing date: Mar 14, 2002
• Grant date: Jul 13, 2004
• Expiry date: Mar 14, 2022

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M60/824
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A blood pump having rotor and/or stator touch down zones to prevent pump failure or hemolysis which can occur if the rotor comes into contact with the stator due to power failure or mechanical shock. The touch down zones can include forming, or coating, portions of adjacent surfaces of the stator and rotor which can come into contact if a rotor touch down occurs. The materials used to form or coat the touch down zones can have properties which ensure that no consequential damage to the contacting surfaces occurs.