Ambulatory infusion pump
US4900305A · kind A · utility
156Cited by
3References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 1988 |
| Grant date | Feb 13, 1990 |
| Priority date | — |
| Expiry date | Jun 27, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/12
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A pulsed liquid injection device for injection of predetermined dosage volumes of medication at predetermined intervals of time over an extended period is described. A relatively large supply of medication is maintained in a bag under pressure, and metered portions thereof are released at time intervals by an electronically controlled metering device. The metering device includes a simple valve arrangement containing three flexible resilient elements arranged and controlled in such a way as to provide shut off of medication supply in the event of a malfunction, either electrical or mechanical.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.