Flow-regulating enteric feeding pump
US4421506A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 1982 |
| Grant date | Dec 20, 1983 |
| Priority date | — |
| Expiry date | Jan 8, 2002 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/14224
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The pump is designed to dispense fluid nutrient at a selectable constant rate from a disposable, flexible plastic bag having a flexible enteric feeder tube attached to it. The bag is suspended from the pump frame with the outlet of the bag and the enteric feeder tube lowermost. The lower portion of the bag adjacent the outlet is then enclosed between a compliant rubber block on the frame, and a planar pressure plate mounted on a door hinged to the frame. The surfaces of the rubber block is provided with spaced, vertically extending protuberant ridges which, under the influence of the compressive force of the pressure plate, occlude the bag in the region about the outlet to define an effluent flow channel. Similarly, spaced horizontal ridges on the block define, within the flow channel, an unoccluded region which is isolted from the outlet by the lower horizontal ridge, and from the remaining volume of the bag, by the upper horizontal ridge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.