Cardiac valve prosthesis

US4846830A · 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: Jan 20, 1988
• Grant date: Jul 11, 1989
• Expiry date: Jan 20, 2008

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2/2409
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A cardiac valve prosthesis in which each closing body has a skeleton line which is curved in the area of the swivel axis. The curved area is followed by a rectilinear area, thus causing a linear cross sectional enlargement in the outlet region of the passage formed by the closing bodies. The opening and closing behavior of the cardiac valve becomes more stable, deadwater ares and vortex formation are largely avoided and natural blood flow is substantially undeviated.