US 12,220,244 B2
Short wave infrared bedside or intra operative assessment of wound or burn depth at dry-wet layers and readiness for reconstruction
Benjamin Levi, Boston, MA (US); Omer Berenfeld, Ann Arbor, MI (US); and Michael D. Morris, Ann Arbor, MI (US)
Assigned to The Regents of The University of Michigan, Ann Arbor, MI (US)
Appl. No. 16/470,678
Filed by THE REGENTS OF THE UNIVERSITY OF MICHIGAN, Ann Arbor, MI (US)
PCT Filed Dec. 21, 2017, PCT No. PCT/US2017/067856
§ 371(c)(1), (2) Date Jun. 18, 2019,
PCT Pub. No. WO2018/119209, PCT Pub. Date Jun. 28, 2018.
Claims priority of provisional application 62/437,072, filed on Dec. 21, 2016.
Prior Publication US 2019/0320969 A1, Oct. 24, 2019
Int. Cl. A61B 5/00 (2006.01); A61B 5/107 (2006.01)
CPC A61B 5/445 (2013.01) [A61B 5/0075 (2013.01); A61B 5/0077 (2013.01); A61B 5/1075 (2013.01); A61B 5/1079 (2013.01); A61B 5/4878 (2013.01); A61B 5/7203 (2013.01); A61B 2503/40 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A short-wave infrared (SWIR) imaging system for assessing a tissue damage depth, the SWIR imaging system comprising:
a light source for illuminating a wound or burn area, the light source having a plurality of light producing devices operated at a plurality of different wavelengths in a range of 1000 nm and 2500 nm;
a light registering camera system in a still or movie format in the SWIR range being within 1000 nm and 2500 nm, the light registering camera system configured to image the wound or burn using the light source at the plurality of different wavelengths and output multi-spectral reflectance imaging information containing reflectance intensity information;
wherein the light registering camera system comprises a plurality of SWIR filters;
and
a detection system configured to receive the multi-spectral reflectance imaging information containing the reflectance intensity information and process the multi-spectral reflectance imaging information to determine a tissue damage depth at a dry-wet layers interface based on specific absorption coefficients of each of the plurality of different wavelengths, the detection system configured to correct for scattering and create an average value of the tissue damage depth using at least two of the plurality of different wavelengths and output a signal in response to the determined tissue damage depth;
a projector system receiving the assessment from the detection system and visibly projecting information upon the wound or burn;
wherein the projected information is wound or burn boundary information, area of interest, or debridement information.