Device and method for controlling the balance of fluids in an extracorporeal blood circuit
US5470483A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 1994 |
| Grant date | Nov 28, 1995 |
| Priority date | — |
| Expiry date | Mar 21, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/929
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A device and method are provided for controlling the balance of fluids during an extracorporeal blood treatment session, according to which treatment, a certain quantity of liquid is withdrawn from the blood which is compensated for by the injection of a substitute liquid into the extracorporeal circuit. A recirculation circuit is provided and pressure is monitored. A pressure deviation within the recirculation circuit reflects a change in the balance between the quantity of liquid withdrawn from the blood and the quantity of liquid injected into the blood, and injection and/or withdrawal rates are altered to obtain a desired balance. The device and method are especially applicable to haemofiltration, haemodiafiltration and plasmapheresis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.