Optical flow cell apparatus and method for reducing deflection of sample chamber
US10564095B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2019 |
| Grant date | Feb 18, 2020 |
| Priority date | — |
| Expiry date | Apr 18, 2039 |
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 and a second plate member made from an optically clear material. A channel extending into a surface of the first plate member and an opposing surface of the second plate member houses a floating seal, which surrounds a fluid sample chamber. 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. The seal channel is vented to prevent fluid pressure from flexing the first plate member or the second plate member. An actuator having an extended foot portion extends over the fluid chamber to help prevent flexing of the first plate member or the second plate member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.