Methods for hemolysis detection in centrifugal blood separator
US8114003B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2009 |
| Grant date | Feb 14, 2012 |
| Priority date | — |
| Expiry date | May 22, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/18
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A centrifugal blood processing apparatus comprising a centrifuge rotor, a separation chamber, a tubing set for conducting blood components and fluids and having an inlet line, and an outlet line. Apparatus tests flow conditions using a red light-green light sensor to detect non-recoverable hemolysis during priming by identifying a high R/G ratio, preferably a ratio of greater than or equal to fifty (50), prior to the beginning of the first return of blood components to a donor followed by identifying a R/G ratio at least as great as one and one tenth (1.1) together with a green signal less than a predetermined value, preferably less than or equal to one thousand (1000) reflectance units. If these conditions are detected, an alarm is given and the apheresis procedure is discontinued.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.