Priming, integrity and head height methods and apparatuses for medical fluid systems
US7575564B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Oct 27, 2004 |
| Grant date | Aug 18, 2009 |
| Priority date | — |
| Expiry date | Oct 2, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/70
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Improved integrity test, priming sequence and bag height detection tests, apparatuses and methods for a medical fluid delivery system are provided. The integrity test includes a plurality of air pressure decay tests, using positive and negative pressure. The priming sequence includes pumping fluid through a portion of a patient line to be primed to overcome air in the line and other potential obstacles. The head height test measures a pressure build-up or drop-off within a pump chamber of a membrane pump. The measured pressure corresponds to a head height between a fluid supply and the pump or between the pump and a fluid drain. A determination is made whether the corresponding head height is acceptable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.