Liquid delivery device particularly useful for delivering drugs
US5242406A · kind A · utility
224Cited by
21References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1991 |
| Grant date | Sep 7, 1993 |
| Priority date | — |
| Expiry date | Dec 16, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/12
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A delivery device for delivering a liquid containing a drug includes a first diaphragm within a housing defining a first contractible-chamber on one side of the diaphragm for holding a supply of the liquid to be delivered, and a second contractible chamber on the opposite side of the diaphragm including an electrolytic cell capable of generating a gas according to the electrical current passed through the cell electrolyte. The device further includes a second diaphragm, a control valve, and a spring, for compensating the rate of delivery of the liquid for variations in ambient pressure and temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.