Aspiration method for hematology analyzing apparatus
US5094961A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1990 |
| Grant date | Mar 10, 1992 |
| Priority date | — |
| Expiry date | Dec 13, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/2575
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
For use in automated or semi-automated hematology analysis apparatus, a method of introducing a volume of blood from a source thereof along a conduit leading to a sampling, metering and transfer valve assembly of the apparatus comprising the steps of drawing a predetermined volume of blood sample from the source, causing the drawn blood sample to travel along the conduit toward the valve assembly, providing detectors adjacent the inlet and outlet of the valve assembly and using vacuum to position the drawn blood sample so that it passes through the valve assembly and is disposed in metering condition within the valve assembly, the positioning being responsive to signals provided by the detectors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.