Device for real-time non-contact skin temperature measurement
In part, the disclosure relates to an electromagnetic radiation (EMR) delivery system for non-invasive surface tissue temperature monitoring. The system includes a first source of EMR having a first wavelength range; a second source of EMR having a second wavelength range; and a tissue contacting material comprising a set of wavelength range specific EMR responsive dopants. In various embodiments, the tissue contacting material is positioned on a surface of a target region of tissue, wherein the tissue contacting material receives EMR from the first source, wherein the tissue contacting material receives EMR from the second source. The first and second sources may be arranged in different orientations or along a common axis or orientation.
1 . An electromagnetic radiation (EMR) delivery and monitoring system for non-invasive surface tissue temperature monitoring comprising
a first source of EMR having a first wavelength range;
a second source of EMR having a second wavelength range; and
a tissue contacting material comprising a set of wavelength range specific EMR responsive dopants,
wherein the tissue contacting material is configured to be positioned on a surface of a target region of tissue, wherein the tissue contacting material receives EMR from the first source at a first orientation,
wherein the tissue contacting material receives EMR from the second source at a second orientation.
2 . The system of claim 1 , wherein the first orientation and the second orientation are the same.
3 . The system of claim 1 , wherein the second orientation is at an angle relative to the first orientation.
4 . The system of claim 1 , wherein the first source of EMR generates a treatment beam.
5 . The system of claim 4 , wherein the second source of EMR generates an excitation beam.
6 . The system of claim 1 , wherein the EMR responsive dopants are selected from the group consisting of a particle, a bead, a layer, a thin film, a fluorescent material, a fluorescent nanoparticle, an upconversion fluorescent nanoparticle, an upconversion material, a nanoparticle, a chromophore, a scattering element, a refracting element, a wavelength shifting material or device, interference generator, absorber and combinations thereof.
7 . The system of claim 1 , wherein the EMR responsive dopants comprise two or more fluorescent materials.
8 . The system of claim 1 further comprising a signal processor, wherein the signal processor is operable to measure temperature changes using received temperature dependent EMR from one or more dopants and one or more parameters of the EMR generated from the second EMR source.
9 . The system of claim 8 , further comprising a control system operable to stop treatment or generate an alarm when a tissue temperature exceeding a threshold or predetermined value has been detected using EMR from the dopants.
10 . The system of claim 1 wherein the EMR responsive dopants are temperature sensitive such that tissue temperature changes in tissue in contact with the tissue contacting material cause changes in EMR emitted or transmitted from the EMR responsive dopants.
11 . The system of claim 1 , further comprising a wavelength selective filter configured to filter one or more wavelength bands of room or treatment radiation while transmitting the temperature dependent EMR generated from one or more of the dopants.
12 . The system of claim 1 , wherein the second source of EMR generates an excitation beam, wherein the excitation beam has a modulation frequency fm.
13 . The system of claim 12 , further comprising a lock-in amplifier having a reference frequency, wherein the reference frequency is the modulation frequency fm.
14 . The system of claim 1 , wherein the second source of EMR generates a pulsed excitation beam and the first source of EMR generates a treatment beam.