Diagnostic transducer and method
First Claim
1. A diagnostic device for assessing ulceration risk in a tissue of a patient, the diagnostic device comprising:
- a hand-held housing, wherein the hand-held housing includes a user interface;
an extension neck operatively coupled to the hand-held housing at a first end of the extension neck, wherein the extension neck has at least a first range of motion relative to the hand-held housing;
a scan head operatively coupled to the extension neck at a second end of the extension neck, wherein the scan head has at least a second range of motion relative to the extension neck, and wherein the hand-held housing, the extension neck, and the scan head are arranged such that pressure is applied to the tissue of the patient from the scan head by a person holding the hand-held housing, and wherein the scan head includes;
a light-emitting system configured to emit light at a selected wavelength of a predetermined set of wavelengths at a first time and to direct the emitted light into the tissue; and
a photodetector configured to receive light reflected from the tissue and generate an electrical signal based on the received reflected light;
a controller operatively coupled to the user interface and configured to control the light-emitting system and the photodetector; and
a processor operatively coupled to the photodetector and the controller and configured to calculate regional-perfusion-index (RPI) data based at least in part on the electrical signal generated by the photodetector.
1 Assignment
0 Petitions
Accused Products
Abstract
Devices and methods for assessing ulceration risk in a tissue. Some embodiments include a device having a scan head on an extension neck extending from housing and having range of motion relative to the housing. The scan head includes light-emitting system that alternately emits light at different selected wavelengths into the tissue, and a photodetector that generates an electrical signal based on the receive light. A processor calculates regional-perfusion-index (RPI) data based on the electrical signal. Some embodiments provide a tissue-vibration mechanism to help measure mechano-transduction induced recovery from vibratory stimulation for determining short-term metabolic deficit. In some embodiments, the scan head has a topological feature (such as one or more grooves, holes, bumps and/or ridges) that provides pressure-change stimulation for measuring vascular recovery from pressure changes. In some embodiments, the device includes accelerometers and/or pressure sensors to determine where the scan head is positioned relative to the patient'"'"'s foot.
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Citations
20 Claims
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1. A diagnostic device for assessing ulceration risk in a tissue of a patient, the diagnostic device comprising:
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a hand-held housing, wherein the hand-held housing includes a user interface; an extension neck operatively coupled to the hand-held housing at a first end of the extension neck, wherein the extension neck has at least a first range of motion relative to the hand-held housing; a scan head operatively coupled to the extension neck at a second end of the extension neck, wherein the scan head has at least a second range of motion relative to the extension neck, and wherein the hand-held housing, the extension neck, and the scan head are arranged such that pressure is applied to the tissue of the patient from the scan head by a person holding the hand-held housing, and wherein the scan head includes; a light-emitting system configured to emit light at a selected wavelength of a predetermined set of wavelengths at a first time and to direct the emitted light into the tissue; and a photodetector configured to receive light reflected from the tissue and generate an electrical signal based on the received reflected light; a controller operatively coupled to the user interface and configured to control the light-emitting system and the photodetector; and a processor operatively coupled to the photodetector and the controller and configured to calculate regional-perfusion-index (RPI) data based at least in part on the electrical signal generated by the photodetector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for assessing ulceration risk in a tissue, the method comprising:
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providing a diagnostic device, wherein the diagnostic device includes; a hand-held housing, wherein the hand-held housing includes a user interface, an extension neck operatively coupled to the hand-held housing at a first end of the extension neck, wherein the extension neck has at least a first range of motion relative to the hand-held housing, a scan head operatively coupled to the extension neck at a second end of the extension neck, wherein the scan head has at least a second range of motion relative to the extension neck, wherein the scan head includes a light-emitting system and a photodetector, and wherein the hand-held housing, the extension neck, and the scan head are arranged such that pressure is applied to the tissue of the patient from the scan head by a person holding the hand-held housing, a controller operatively coupled to the user interface and configured to control the light-emitting system and the photodetector, and a processor operatively coupled to the photodetector and the controller; rolling the scan head in a medial and lateral direction across the tissue while holding the hand-held housing; emitting light at a selected wavelength of a predetermined set of wavelengths from the light-emitting system at a first time and directing the emitted light into the tissue; receiving light reflected from the tissue at the photodetector and generating an electrical signal based on the received reflected light; calculating, via the processor, regional-perfusion-index (RPI) data based at least in part on the electrical signal; and displaying the RPI data via the user interface. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. An apparatus for assessing ulceration risk in a tissue, the apparatus comprising:
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a diagnostic device that includes a hand-held housing, a scan head, and means for pressing and rolling the scan head in a medial and lateral direction across the tissue while holding the hand-held housing, wherein the means for pressing and rolling the scan head has at least a first range of motion relative to the hand-held housing, wherein the scan head has at least a second range of motion relative to the means for pressing and rolling the scan head, and wherein the hand-held housing, the scan head, and the means for pressing and rolling the scan head are arranged such that pressure is applied to the tissue of the patient from the scan head by a person holding the hand-held housing; means for emitting light from the scan head at a selected wavelength of a predetermined set of wavelengths from the light-emitting system at a first time and directing the emitted light into the tissue; means for receiving light reflected from the tissue and for generating an electrical signal based on the received reflected light; means for controlling the means for emitting light and the means for receiving light; means for calculating regional-perfusion-index (RPI) data based at least in part on the electrical signal; and means for displaying the RPI data. - View Dependent Claims (19, 20)
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Specification