Variable volume plasma treatment chamber for an apparatus for the extracorporeal treatment of disease
US4223672A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1979 |
| Grant date | Sep 23, 1980 |
| Priority date | — |
| Expiry date | Feb 8, 1999 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2202/0415
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The apparatus includes a peristaltic pump for withdrawing whole blood from a patient, a device for centrifuging the blood to separate plasma from the whole blood, a plasma treatment chamber for receiving the plasma, a vehicle positioned within the chamber and having an immuno-adsorbent agent fixed thereon to interact and bond with an immunological reactant carried by the plasma that is passed through the chamber for removing the immunological reactant from the plasma, tubing connected to recombine the substantially immunological reactant free plasma with the remainder of the whole blood and a peristaltic pump for returning the recombined whole blood to the patient. According to the present invention the plasma treatment chamber has a variable volume so that the chamber can be used for treating sequentially different quantities of plasma.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.