Pumping device having improved emptying detection features
US9901678B2 · kind B2 · utility
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27Claims
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Key dates
| Filing date | Feb 1, 2013 |
| Grant date | Feb 27, 2018 |
| Priority date | — |
| Expiry date | Aug 6, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/7527
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Sensor for dynamically detecting the residual fluid volume Vres of a collapsible reservoir (1,3) characterized by the fact that it is adapted to detect a threshold pressure Pth which corresponds to a phase within said reservoir (1,3) when only said residual fluid volume Vres remains, said residual volume Vres corresponding to a safety volume sufficient to ensure a safety margin to alert the user before the reservoir (1,3) is empty.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.