Heart valve prosthesis

US4995881A · kind A · utility

Assignee

• B. Braun Melsungen AG · DE

Inventors

• Martin Knoch · Starnberg, DE
• Helmut Reul · St. Blasien, DE
• Gunter Rau · Aachen, DE

Key dates

• Filing date: Jul 31, 1989
• Grant date: Feb 26, 1991
• Expiry date: Jul 31, 2009

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2/2403
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A heart valve prosthesis, the inner surface of the valve ring of which continuously narrows in flow direction, is provided with a special manner of supporting the closing members. The valve ring is provided with sector-shaped recesses into which a respective oblong journal pin of the closing member extends. In the opening and closing movement, the journal pin sweeps the bottom of the recess like a windshield wiper. Thus, a formation of thrombi in the vicinity of the bearings is prevented.