Peristaltic pumping segment with check valve
US12115340B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2021 |
| Grant date | Oct 15, 2024 |
| Priority date | — |
| Expiry date | Aug 16, 2042 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/16881
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Pumping segments are described herein. In certain embodiments, a peristaltic pumping segment include a tubing segment, a plunger, a downstream occluder, and an upstream check valve. The plunger is movable to selectively expand the pumping volume to draw in fluid flow and contract the pumping volume to administer the fluid flow. The occluder is movable to selectively engage against the downstream portion to prevent fluid flow from the downstream portion during expansion of the pumping volume and to permit fluid flow from the pumping volume through the downstream portion during contraction of the pumping volume. The check valve outlet is in fluid communication with the pumping volume, and the valve element is configured to permit fluid flow from the valve inlet to the pumping volume during expansion of the pumping volume and to prevent fluid flow from the pumping volume to the valve inlet during contraction of the pumping volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.