Method and apparatus for detecting leaking valves in a volumetric infusion device
US4602249A · kind A · utility
52Cited by
8References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 21, 1984 |
| Grant date | Jul 22, 1986 |
| Priority date | — |
| Expiry date | May 21, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/12
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus for detecting leaking valves in a volumetric fluid delivery system. The system employs a volumetric chamber divided into two compartments by a moveable membrane, with each compartment having a valved inlet and a valved outlet. In the system, fluid is delivered in discrete increments by alternately opening an inlet and an outlet on opposite sides of the membrane. Between such delivery periods, all valves are closed, and then only a single valve is opened. The membrane is monitored to detect movement while the single valve is opened, indicating a closure failure in one of the supposedly closed valves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.