Drip chamber
US4395260A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1981 |
| Grant date | Jul 26, 1983 |
| Priority date | — |
| Expiry date | Jun 1, 2001 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/162
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus and method for effectively eliminating the risk of introducing air bubbles into a fluid delivery system such as to administer parenteral fluids to a patient. The apparatus comprises a baffle positioned within a drip chamber for deflecting fluid expelled from a fluid resistor in order to eliminate turbulence and the formation of micro-bubbles during rapid filling or flushing of the fluid delivery system. The drip chamber also comprises a filter membrane positioned across the outlet of the drip chamber. The filter membrane is attached to a filter carrier assembly which enables the filter membrane to be momentarily displaced so that air bubbles trapped beneath the filter membrane may escape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.