Blood purification apparatus and method for calculating a recirculation rate for the blood purification apparatus
US8328749B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2006 |
| Grant date | Dec 11, 2012 |
| Priority date | — |
| Expiry date | Mar 13, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2230/207
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A blood purification apparatus includes a blood circuit having arterial and venous blood circuits, a blood pump, a blood purifying device, an indicator applying device that applies a predetermined indicator to the blood flowing extracorporeally through the blood circuit, a detecting device that detects the indicator applied by the indicator applying device, an arithmetic device that calculates, based on the indicator detected by the detecting device, a recirculation rate, and a calculating device that calculates an ideal extracorporeally circulating blood flow that results in the recirculation rate being no more than a predetermined value when the recirculation rate calculated by the arithmetic device is greater than the predetermined value. The recirculation rate is a proportion of a recirculated blood flow, which is reintroduced to the patient from the venous blood circuit and directed again to the arterial blood circuit, relative to an extracorporeally circulating blood flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.