Red cell apheresis method
US5387187A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 1994 |
| Grant date | Feb 7, 1995 |
| Priority date | — |
| Expiry date | Mar 1, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/7518
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention provides an apheresis apparatus and method for separating blood. A phlebotomy needle draws anticoagulated whole blood from a donor into a separation chamber. The separation chamber separates plasma from higher density blood components. The plasma is displaced to a plasma collection bag. The separation process is terminated and the higher density blood components remaining in the separation chamber are diluted with saline solution and are returned to the donor via the phlebotomy needle. Anticoagulated whole blood is drawn again from the donor into the separation chamber. The separation chamber again separates plasma from higher density blood components in the separation chamber. The separation process is then terminated and the donor is disconnected. The higher density blood components remaining in the separation chamber are displaced to a bag for collecting higher density blood components and is rejuvenated with additive solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.