Compression pump-catheter
US4657530A · kind A · utility
Inventors
Key dates
| Filing date | Apr 9, 1984 |
| Grant date | Apr 14, 1987 |
| Priority date | — |
| Expiry date | Apr 9, 2004 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2202/0401
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An ascites shunt is described in the form of an implantable, anti-reflux, fluid displacement, compression pump-catheter system. The system includes a double chambered multi-micro-orifice ascites collection device, an anti-reflux, anti-backdiffusion tubular compression pump, and an anti-reflux, anti-backdiffusion, non-thrombogenic catheter, all connected in series by flexible tubing. The shunt is used to transfer fluid from the peritoneum to a blood vessel to prevent accumulation of fluid within the peritoneal cavity. The pump and intravascular catheter include check valve tips of particular design to prevent both reflux and diffusion of blood components into the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.