NON-INVASIVE TISSUE OXIMETRY DEVICE UTILIZING A MICRO-LASER
Disclosed is a non-invasive tissue oximetry device that is attachable to a patient's tissue to measure oxygen perfusion of the patient's tissue. The non-invasive tissue oximetry device includes: one or more micro-lasers to generate one or more optical signals; one or more detectors to receive the one or more optical signals; and a processor coupled to the one or more micro-lasers and detectors to measure oxygen perfusion of the tissue based upon the received one or more optical signals.
1 . A non-invasive tissue oximetry device attachable to a patient's tissue to measure oxygen perfusion of the patient's tissue comprising:
one or more micro-lasers to generate one or more optical signals;
one or more detectors to receive the one or more optical signals;
a processor coupled to the one or more micro-lasers and detectors to measure oxygen perfusion of the tissue based upon the received one or more optical signals;
wherein, the non-invasive tissue oximetry device is attachable to a patient's muscle site to measure oxygen perfusion from the patient's muscle site; and
wherein, the one or more micro-lasers include a plurality of micro-lasers that are switched in round-robin fashion to generate a PPG signal.
2 . A non-invasive tissue oximetry device attachable to a patient's tissue to measure oxygen perfusion of the patient's tissue comprising:
one or more micro-lasers to generate one or more optical signals;
one or more detectors to receive the one or more optical signals; and
a processor coupled to the one or more micro-lasers and detectors to measure oxygen perfusion of the tissue based upon the received one or more optical signals.
3 . The non-invasive tissue oximetry device of claim 2 , wherein oxygen perfusion of the tissue is measured in a continuous manner.
4 . The non-invasive tissue oximetry device of claim 2 , wherein the processor and one or more micro-lasers and detectors are integrated in the tissue oximetry device.
5 . The non-invasive tissue oximetry device of claim 2 , wherein the one or more micro-lasers include a vertical cavity surface emitting laser (VCSEL).
6 . The non-invasive tissue oximetry device of claim 2 , wherein the non-invasive tissue oximetry device is attachable to a patient's forehead to measure oxygen perfusion of the patient's brain.
7 . The non-invasive tissue oximetry device of claim 2 , wherein the non-invasive tissue oximetry device is attachable to a patient's muscle site to measure oxygen perfusion from the patient's muscle site.
8 . The non-invasive tissue oximetry device of claim 2 , further comprising, a display to display the oxygen perfusion of the tissue.
9 . The non-invasive tissue oximetry device of claim 2 , further comprising comprising, a rechargeable battery and a wireless transmitter to transmit data related to measured oxygen perfusion of the tissue.
10 . The non-invasive tissue oximetry device of claim 2 , wherein the one or more micro-lasers and the one or more detectors generate a photoplethysmogram (PPG) signal.
11 . The non-invasive tissue oximetry device of claim 10 , wherein the one or more micro-lasers include a plurality of micro-lasers that are switched in round-robin fashion to generate the PPG signal.
12 . The non-invasive tissue oximetry device of claim 11 , wherein the one or more detectors include an array detector to receive optical signals in synchronization with the micro-lasers to generate the PPG signal.
13 . A method to measure a patient's tissue to measure oxygen perfusion of the patient's tissue comprising:
attaching a non-invasive tissue oximetry device to the patient's tissue;
controlling one or more micro-lasers to generate one or more optical signals;
monitoring one or more detectors to receive the one or more optical signals; and
measuring oxygen perfusion of the tissue based upon the received one or more optical signals.
14 . The method of claim 13 , wherein, oxygen perfusion of the tissue is measured in a continuous manner.
15 . The method of claim 14 , wherein the one or more micro-lasers and detectors are integrated in the tissue oximetry device.
16 . The method of claim 15 , wherein the one or more micro-lasers include a vertical cavity surface emitting laser (VCSEL).
17 . The method of claim 16 , wherein the non-invasive tissue oximetry device is attachable to a patient's forehead to measure oxygen perfusion of the patient's brain.
18 . The method of claim 16 , wherein the non-invasive tissue oximetry device is attachable to a patient's muscle site to measure oxygen perfusion from the patient's muscle site.
19 . The method of claim 18 , further comprising, a display to display the oxygen perfusion of the tissue.
20 . The method of claim 19 , wherein, the one or more micro-lasers and the one or more detectors generate a photoplethysmogram (PPG) signal.
21 . The method of claim 20 , wherein, the one or more micro-lasers include a plurality of micro-lasers that are switched in round-robin fashion to generate the PPG signal.
22 . The method of claim 21 , wherein, the one or more detectors include an array detector to receive optical signals in synchronization with the micro-lasers to generate a PPG signal.