Systems and methods providing a liquid-primed, single flow access chamber
US6027441A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1997 |
| Grant date | Feb 22, 2000 |
| Priority date | — |
| Expiry date | Jul 1, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB04B2009/143
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Blood processing systems and methods rotate a processing chamber on a rotating element. The processing chamber includes a first compartment and a second compartment. Blood is conveyed into the first compartment for centrifugal separation into components. A liquid free of blood occupies the second compartment to counter-balance the first compartment during rotation on the rotating element. In one embodiment, the second compartment is served by a single fluid flow access. Prior to use, the single access is coupled to tubing, through which a vacuum is drawn to remove air from the second compartment. While the vacuum exists, communication is opened between the tubing and a source of liquid. The vacuum draws the liquid into the second compartment through the single access, thereby priming the second compartment for use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.