Micropump supervisory control
US5239319A · kind A · utility
16Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 27, 1992 |
| Grant date | Aug 24, 1993 |
| Priority date | — |
| Expiry date | Mar 27, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/172
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A micropump supervisory control method and apparatus having various functions, such as annunciation and safety measures. The control method and apparatus accurately control trace discharge rates through adjustment of the number and frequency of driving pulses for a piezoelectric valve element. In addition, the control method provides discharge, life-prediction and life-expiration warning, and operation acknowledge alarms and annunciations while driving the micropump, each having a predetermined sounding pattern. Micropump functions are also inhibited when a power source is reconnected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.