Parenteral solution delivery control system
US4533350A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 1983 |
| Grant date | Aug 6, 1985 |
| Priority date | — |
| Expiry date | May 10, 2003 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/1689
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A parenteral solution delivery control system for housing a drip chamber and detecting drops falling therethrough. One or more light sources are employed to provide light beam transverse to the drip chamber axis and covering the cross-section of the drip chamber so that drops falling therethrough, even when the drip chamber is tilted, break a light beam. A retention bar is provided to maintain the drip chamber in proper position and to break a light beam when the drip chamber is in position, thereby preventing operation of the device when not properly assembled. A liquid level control monitor is configured to provide an energized signal when the area of the drip chamber occupied by liquid during normal operation is filled with air as a consequence of the liquid level falling to an abnormal level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.