Intravenous metering device
US4336800A · kind A · utility
40Cited by
9References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 1, 1980 |
| Grant date | Jun 29, 1982 |
| Priority date | — |
| Expiry date | Aug 1, 2000 |
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 and its method of use, the device including a pumping chamber with a reciprocable diaphragm positioned therein such that the cross-sectional area of the liquid flow path through this chamber is approximately equal to the cross-sectional area of the inlet and outlet of the chamber. The device also includes check valves positioned at the pumping chamber inlet and outlet and a gas retention chamber having an upper portion providing for the formation of the gas-liquid interface and a lower portion from which liquid free of gas bubbles may be removed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.