Sample dispensing apparatus and automatic analyzer using the same
US7027935B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 2003 |
| Grant date | Apr 11, 2006 |
| Priority date | — |
| Expiry date | Aug 6, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N35/1004
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sample dispensing apparatus is realized which can detect a dispensing abnormality occurred during the sample dispensing operation regardless of the type and the extent of the abnormality. A pressure sensor is connected to a dispensing flow passage system, including a sample probe and a dispensing syringe, and a plurality of output values of the pressure sensor during the sample dispensing operation are taken in. A multi-item analysis (based on the Mahalanobis distance) is carried out by using, as items, the plurality of taken-in output values of the pressure sensor. Whether the dispensing is normally performed or not is determined by comparing an analysis result with a threshold. A highly reliable determination result is obtained in spite of variations of sensitivity of the pressure sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.