System and method used to determine tissue and/or artifact characteristics
US11723600B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2018 |
| Grant date | Aug 15, 2023 |
| Priority date | — |
| Expiry date | Apr 10, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/3937
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A surgical system used to determine if a vessel is within a region proximate to a working end of a surgical instrument includes at least one light emitter configured to emit light of two different wavelengths. The system also includes at least one light sensor disposed opposite the at least one light emitter, the at least one light sensor configured to detect light at the two different wavelengths and to provide a signal having a pulsatile and a non-pulsatile component for each wavelength. The system further includes a controller coupled to the at least one light sensor and configured to determine and indicate if the vessel is a ureter within the region proximate to the working end of the surgical instrument based on a ratio and a symmetry of a dip in the non-pulsatile component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.