Intravenous set
US4551134A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 1982 |
| Grant date | Nov 5, 1985 |
| Priority date | — |
| Expiry date | Aug 6, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/13
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An intravenous set is described which includes a housing which defines three separate chambers: an uppermost valve chamber, an intermediate volumetric chamber, and a lowermost drip chamber. The valve chamber is provided with an externally actuated structure for interrupting the flow of fluids into the volumetric chamber. In alternate embodiments, this valve member can include a magnetically responsive element, a diaphragm, or a pinch tube. A volumetric chamber is provided with a predetermined volume and is adapted for remote sensing of the fluid level inside the volumetric chamber. Fluids pass from the volumetric chamber into the drip chamber where they are formed into individual drops. The drip chamber is adapted to allow remote detection of drop formation and drop counting. A controller is described which, when used in conjunction with the described intravenous set, provides extremely accurately controlled rates of infusion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.