Automated peritoneovenous shunt

US4725207A · kind A · utility

Assignee

• Regents of the University of Minnesota · US

Inventors

• Henry Buchwald · Minneapolis, US
• Eugenio Guzman · Roseville, US
• Bruce D. Wigness · Minneapolis, US

Key dates

• Filing date: Jun 23, 1986
• Grant date: Feb 16, 1988
• Expiry date: Jun 23, 2006

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2205/8206
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An implantable, anti-reflux, fluid displacement peritoneovenous shunt system. The system includes a double chambered multi-micro-orifice ascites collection device, a magnetically driven pump, and an anti-reflux, anti-backdiffusion, non-thrombogenic catheter tip, all connected by flexible tubing. The shunt is used to transfer fluid from the peritoneum to the cardivascular system to prevent accumulation of fluid within the peritoneal cavity. The magnetically operated pump may be of either the reciprocating diaphragm or piston type or it may be a rotary driven bellows displacement pump.