Time-division multiplexing in a multi-wavelength photon density wave system
US8788001B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 2009 |
| Grant date | Jul 22, 2014 |
| Priority date | — |
| Expiry date | Mar 16, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/223
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Multi-wavelength photon density wave medical systems, methods, and devices are provided. In one embodiment, a multi-wavelength system may include a sensor, a sensor cable, and a patient monitor. The sensor may have an emitter output and a detector input configured to pass a multi-wavelength photon density wave input signal into a patient and receive a resulting multi-wavelength photon density wave output signal. The sensor cable may couple to the sensor using two optical cables for transmitting and receiving the multi-wavelength photon density wave signals. The patient monitor may couple to the sensor cable and generate several time-division multiplexed single-wavelength input signals by modulating one or more light sources at a frequency sufficient to produce resolvable photon density waves. By combining the several time-division multiplexed single-wavelength input signals into one of the optical cables of the sensor cable, the patient monitor may generate the multi-wavelength photon density wave input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.