Visible-near infrared spectroscopy in burn injury assessment

A - Human Necessities – 61 – B

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A61B 5/103 (2006.01) A61B 5/00 (2006.01)

Patent

CA 2398278

A non-invasive method of characterizing burn injuries using near infrared spectroscopy is described. In the method, a beam of light is emitted into the burnt tissue portion at two or more different tissue depths. The spectra are then compared using multivariate analysis to determine diagnostic regions of the spectra. This information is used to categorize the burn. In some cases, the diagnostic regions correspond to wavelengths related to the hemodynamics of the tissue portion. The spectra can also be repeated over time, thereby allowing trends and changes in the spectra to be measured. This data is in turn used to categorize the burn as either a superficial burn, partial thickness burn, deep partial burn or a full thickness burn. Once the burn has been categorized, the clinician can intervene as needed to treat the burn.

L'invention concerne une technique non invasive permettant de caractériser les brûlures par spectroscopie proche infrarouge. Cette technique consiste à émettre un faisceau de lumière dans la partie de tissu brûlé à deux profondeurs de tissu diverses ou plus. Les spectres sont alors comparés par analyse multivariable afin de définir les régions diagnostiques des spectres. Cette information est utilisée pour catégoriser la brûlure. Dans certains cas, les régions diagnostiques correspondent à des longueurs d'ondes associées à l'hémodynamique de la partie de tissu. Les spectres peuvent également être répétés au fil du temps, permettant ainsi de mesurer les tendances et les changements des spectres. Ces données sont à leur tour utilisées pour catégoriser la brûlure comme brûlure superficielle, brûlure au deuxième degré, brûlure profonde partielle ou brûlure au premier degré. Lorsque la brûlure a été catégorisée, le clinicien peut intervenir comme nécessaire pour traiter la brûlure.

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