Contactless system and method for assessing tissue viability and other hemodynamic parameters
USRE49639E1 · kind E1 · reissue
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2020 |
| Grant date | Sep 5, 2023 |
| Priority date | — |
| Expiry date | Oct 28, 2040 |
Classification
- Technology area (CPC —)General
Abstract
A contactless system for assessing tissue viability and other hemodynamic parameters includes one or more light sources configured to emit lights at a predetermined wavelength sensitive to hemoglobin concentration associated with spontaneous hemodynamic oscillations at tissue in a predetermined area of a human subject. One or more polarizers are each coupled to one or more of the one or more light sources and are configured to polarize the light to a polarized state such that the polarized light in the polarized state diffuses into the tissue in the predetermined area at a predetermined depth and the polarized light is maintained in the polarized state at the predetermined depth. One or more detectors each including a detector polarizer coupled thereto are configured to discriminate the light maintained in the polarized state and at the predetermined depth and are configured to generate a plurality of frames of the tissue in the predetermined area at the predetermined depth. A controller is coupled to the one or more light sources and the one or more detectors. The controller is configured to: acquire the plurality of frames, select a region of interest having the same coordinates …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.