Ambulatory infusion pump
US5482446A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1994 |
| Grant date | Jan 9, 1996 |
| Priority date | — |
| Expiry date | Mar 9, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/14224
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A medical infusion pump (10) using a pump chamber cassette (86) has a housing (20,22) defining a pump chamber cassette receptacle (84) and a pump driving mechanism (250) for propelling liquid through the pump chamber cassette. A door (50) holds the pump chamber cassette (86) within the cassette receptacle (84) in an operative position relative to the driving mechanism (250). The cassette includes an elastomeric conduit (132), a frame (134) and clips (146,148) for attaching the elastomeric conduit (132) to the frame (134) for holding the elastomeric conduit (132) in a select position relative to the pump driving mechanism (250) of the infusion pump upon placement of the cassette (86) in an operative position relative to the pump driving mechanism (250). A anti-free flow device (136,138) includes the flexible conduit (132) received between an anvil (182) fixedly attached to the frame (134) and a pincher (132) attached to the frame (134), the pincher (138) being movable between a first position biasing the pincher (138) against the anvil (182) to occlude a lumen (150) of the elastomeric conduit (132) and a second position for eliminating the bias of the pincher (138) against the anvil…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.