IV pump dual piston disposable cassette and system
US8936447B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 26, 2010 |
| Grant date | Jan 20, 2015 |
| Priority date | — |
| Expiry date | Jun 9, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/128
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A cassette has an interface element having a first position and a second position. The interface element is configured to be driven from the first position to the second position and back to the first position by unidirectional rotary motion of a driving element. The cassette also has a first and a second pumping chamber each having a volume and each coupled to the interface element such that the volume of the first pumping chamber is increasing while the volume of the second pumping chamber is decreasing as the interface element moves from the first position to the second position and the volume of the first pumping chamber is decreasing while the volume of the second pumping chamber is increasing as the interface element moves from the second position to the first position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.