Flow regulating device for peristalitic pumps
US4650471A · kind A · utility
Inventor
Key dates
| Filing date | Jan 20, 1984 |
| Grant date | Mar 17, 1987 |
| Priority date | — |
| Expiry date | Jan 20, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B43/0072
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention provides a pumping chamber to be constructed as follows: A collapsible tubing is attached to an inlet fitting and to and outlet fitting to transport a biologic fluid such as blood therethrough. An outer tubing surrounds the collapsible tubing and is secured to the outer surface of the inlet fitting and to the outer surface of the outlet fitting, forming a chamber thereby. At least a duality of ports defining passageways through the wall of the outer tubing permits communication of the chamber with ambient conditions outside the chamber. The ports are designed to accept such devices as pressure gauges, alarm systems and devices to regulate intrachamber pressure, to observe arterial pressure, and to regulate collapse and occlusion of collapsible tubing in response to inadequate blood volumes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.