Metering device for intravenous fluids
US4493709A · kind A · utility
21Cited by
11References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 25, 1982 |
| Grant date | Jan 15, 1985 |
| Priority date | — |
| Expiry date | Jan 25, 2002 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/16809
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A metering device is disclosed which includes a metering chamber (14) divided into two compartments (22, 24) by a pressure transmitting member in the form of a flexible diaphragm (20). Fluid flow is alternately allowed into each of the two compartments (22, 24) with each compartment filling to the volume of the metering chamber (14) when full so that periodic pulses of intravenous fluid of that precise volume are sent to the patient. The volume of the metering chamber (14) is selected to match a standard intravenous set drop size, for example one-tenth, one-fifteenth, one-twentieth, or one-sixtieth milliliter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.