Flow cell fluid and sample supply mechanism
US4202747A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 1978 |
| Grant date | May 13, 1980 |
| Priority date | — |
| Expiry date | Jul 6, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N35/1095
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus for automatically and selectively supplying a blood sample or a wash/calibration solution to the entrance port of a flow cell which measures characteristics of the sample such as pH, pCO.sub.2 and pO.sub.2. A sample filled syringe and a solution supply conduit are supported by respective first and second fluid delivery mechanisms which rotate to move the syringe outlet and the conduit outlet in generally arcuate paths toward and away from the flow cell entrance port. The delivery mechanisms are rotated simultaneously, one toward and one away from the entrance port, by a common drive gear. Seating of the wash solution outlet in the entrance port is upstream of the seating of the sample outlet to ensure complete flushing of sample from the entrance port by the wash solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.