Process/apparatus for the withdrawal/return of body fluids
US4648866A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1984 |
| Grant date | Mar 10, 1987 |
| Priority date | — |
| Expiry date | Jul 9, 2004 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M1/3603
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Process/apparatus for the processing of body fluids, advantageously comprising plasmapheresis technique for the fractionation of whole blood, features (i) means, e.g., a common blood transfusion needle, for withdrawing and returning body fluid from and to a living patient; (ii) a body fluid separating module which comprises an upstream first compartment and a downstram second compartment, and having a semi-permeable membrane body fluid separator disposed therebetween; (iii) first conduit means communicating said withdrawal and return means (i) with the upstream first compartment of said separating module (ii); (iv) means provided along said first conduit (iii) for conveying body fluid in either direction therein; (v) means responsive to said conveying means (iv), adapted to monitor the pressure of body fluid circulating in said first conduit (iii), and provided between said withdrawal and return means (i) and said conveying means (iv); (vi) means for collecting body fluid transported across said semi-permeable membrane and communicating with the downstream second compartment of said separating module (ii); (vii) second conduit means communicating the upstream first compartment of s…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.