Transfusion apparatus
US4731057A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1986 |
| Grant date | Mar 15, 1988 |
| Priority date | — |
| Expiry date | Jul 30, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/16804
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A transfusion apparatus including a pump section for sequentially pressing and occluding a transfusion tube by means of a plurality of finger elements of a peristaltic type thereby to feed a liquid, a detecting section having (1) a circuit for detecting a given reference position of the pump section to generate a corresponding detection signal during periodic peristaltic movement of the pump section and (2) a circuit for detecting a working position of the pump section deviated from the reference position through the peristaltic movement thereby to generate a corresponding detection signal, and a drive controlling section for receiving the detected signals from the detecting section to compute and control the peristaltic rate thereby to maintain a constant delivery amount by the pump section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.