Error correction for a liquid concentration detector of a blood purification apparatus
US8518247B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2010 |
| Grant date | Aug 27, 2013 |
| Priority date | — |
| Expiry date | Nov 3, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/0621
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A blood purification instrument for extracorporeally circulating a patient's blood and a concentration detector detects a concentration of liquid during blood purification wherein the concentration detector has a light emitter irradiating light onto the liquid, a light receiver receives the light as transmitted through the liquid, a reference light receiver receives reference light branched from the light emitter without transmission through the liquid, and a detector detecting the light intensity respectively of the transmitted light and the reference light received by the light receiver and the reference light receiver, respectively. The blood purification apparatus further includes an error corrector detecting the concentration of the liquid based on the received light intensity of the light received by the light receiver and detected by the detector and for correcting a detected error of the concentration detector based on the received light intensity of the reference light received by the reference light receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.