Intravenous metering device
US4453932A · kind A · utility
51Cited by
6References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 19, 1982 |
| Grant date | Jun 12, 1984 |
| Priority date | — |
| Expiry date | Feb 19, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/12
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A device for precise metering of liquids for intravenous delivery to a patient, the device including a pumping chamber with a reciprocable diaphragm positioned therein. The device also includes check valves positioned at the pumping chamber inlet and outlet, and a gas retention chamber located upstream of the pumping chamber and having an upper portion providing for the formation of a gas-liquid interface and a lower portion from which liquid free of gas bubbles may be removed and directed into the pumping chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.