Optical flow cell and test head apparatus
US10324025B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 2018 |
| Grant date | Jun 18, 2019 |
| Priority date | — |
| Expiry date | May 4, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/0668
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sample cell apparatus for use in spectroscopic determination of an analyte in a body fluid sample includes a first plate member made from an optically clear material and a second plate member made from an optically clear material and opposing the first plate member. A channel extending into a surface of the first plate member and an opposing surface of the second plate member houses a floating seal. The floating seal surrounds a fluid chamber that retains a sample of body fluid for optical measurement. The fluid chamber may be opened for flushing by separating the first plate member from the second plate member. During measurements the fluid chamber is closed to define a repeatable optical path-length therethrough by urging the first plate member against the second plate member without compressing the floating seal between the first plate member and the second plate member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.