TISSUE VIABILITY/HEALTH MONITOR UTILIZING NEAR INFRARED SPECTROSCOPY

摘要

An apparatus for the evaluation of tissue parameters in the visible and near infrared as related to tissue status is presented. The apparatus comprises a light source capable of illuminating tissue in the visible and near infrared spectral region. The tissue absorbs some of the light while a large portion of the light is diffusely scattered within the tissue. Scattering disperses the light in all directions with a fraction of the scattered light penetrating into the tissue and remitted back out to the surface. The remitted light is collected by a detection system capable of dispersing the light into its wavelength components. The light can be collected using single or multiple fiber optic probes entering into a dispersive wavelength selection devices in which the dispersed light is detected using a photon detecting device in a spectroscopic milieu. Likewise, the remitted light can be detected in an imaging fashion using a non-dispersive wavelength selection and imaging optical system. The remitted light detected from the tissue contains unique spectral information related to the health status of the tissue. The acquired spectra and images are displayed in near real time on a display in such a manner to characterize the health status of the tissue.