Method and apparatus for separation of blood into its components
US5298171A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 7, 1992 |
| Grant date | Mar 29, 1994 |
| Priority date | — |
| Expiry date | Aug 7, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2202/0429
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In a separation device for separation of blood into its components, the hematocrit value of the blood to be separated plays a significant role relative to the sedimentation of cellular blood components. Since in blood processing, particularly in the intraoperative area, significant fluctuations of the incoming hematocrit value may occur, for example, due to infused volume expander, irrigation solutions, anticoagulant additives, etc., it is useful for maintenance of a blood separation working with constant values, particularly a constant hematocrit value of the erythrocyte fraction, to take the preset hematocrit value of the blood to be separated into account. According to the invention, the rate of blood flow through the separation device is automatically adjusted as a function of the hematocrit value of the incoming blood.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.