NZ773310A

NZ773310A - Measurement of edema

Info

Publication number: NZ773310A
Application number: NZ773310A
Authority: NZ
Inventors: Martin F Burns; Sara Barrington; Graham O Ross
Original assignee: Bruin Biometrics Llc
Priority date: 2017-02-03
Filing date: 2018-02-02
Publication date: 2024-03-22

Abstract

The present disclosure provides apparatuses and methods for measuring sub-epidermal moisture to provide clinicians with information related to physical conditions and ailments associated with accumulation or depletion of extracellular fluid.

Claims

WE CLAIM:

1. An apparatus for assessing compartment syndrome, said tus comprising: a sensor comprising at least one first electrode and at least one second electrode, wherein said sensor is configured to be placed against a patient’s skin, a circuit electronically coupled to said first and second electrodes and configured to measure an electrical property between said first and second electrodes and provide information regarding said electrical ty, a sor electronically coupled to said t and configured to receive said information, and a non-transitory computer-readable medium electronically coupled to said sor and comprising instructions stored thereon that, when executed on said processor, perform the steps of: converting said ation into a first sub-epidermal moisture (SEM) value, and determining a difference between said first SEM value and a reference value, wherein said magnitude of said difference exceeding a predetermined amount is tive of compartment syndrome.

2. The apparatus of claim 1, wherein said first SEM value is d from a measurement taken at a first location of the patient’s skin; and said reference value is a second SEM value derived from a measurement taken at a second location of the patient’s skin.

3. The apparatus of claim 2, wherein said first SEM value exceeding said second SEM value by said predetermined amount is indicative of compartment syndrome at said first location.

4. The apparatus of claim 2, wherein said second SEM value exceeding said first SEM value by said predetermined amount is indicative of compartment syndrome at said second location.

5. The tus of claim 2, wherein first and second locations are ric with respect to a centerline of the patient’s body.

6. An apparatus for assessing compartment syndrome, said apparatus comprising: 43721257_1 a sensor comprising an ode array comprising a plurality of electrodes disposed on said sensor at a plurality of positions, wherein said sensor is ured to be placed against a patient’s skin; a circuit electronically coupled to each ode of said plurality of electrodes, said circuit e of measuring an electrical property from each electrode of said plurality of odes, and providing information regarding said electrical measurements; a sor electronically coupled to said circuit and configured to receive said information regarding said plurality of ical ements from said circuit and convert said information into a plurality of sub-epidermal moisture (SEM) values; a non-transitory computer-readable medium electronically coupled to said processor and comprising ctions stored thereon that, when executed on said processor, perform the steps of: identifying a first sub-epidermal moisture (SEM) value corresponding to a first subset of said plurality of electrodes at a first location on a patient’s skin, identifying a second SEM value corresponding to a second subset of said plurality of electrodes corresponding to a second location on said patient’s skin, and determining a difference between said first and second SEM values, wherein the magnitude of the difference exceeding a predetermined value is indicative of compartment syndrome.

7. The tus of claim 6, wherein said first and second ons are symmetric with respect to a centerline of the patient’s body.

8. The apparatus of claim 6, wherein said first SEM value exceeding said second SEM value by said predetermined value is tive of compartment syndrome at said first location.

9. The apparatus of claim 6, wherein said second SEM value exceeding said first SEM value by said predetermined value is indicative of compartment syndrome at said second location.

10. The apparatus of claim 6, wherein electrodes of said first subset of said plurality of electrodes are selectively activated to form a first virtual ring electrode and a first virtual central electrode. 43721257_1

11. The apparatus of claim 6, wherein electrodes of said second subset of said plurality of electrodes are selectively activated to form a second virtual ring electrode and a second l central electrode.

12. The apparatus of claim 6, wherein electrodes of said first subset of odes of said plurality of electrodes are selectively ted to form a first virtual ring electrode and a first virtual central electrode, and electrodes of said second subset of electrodes of said plurality of electrodes are selectively activated to form a second virtual ring electrode and a second virtual central electrode.

13. An apparatus for assessing compartment syndrome, said apparatus sing: a sensor comprising an electrode array comprising a plurality of electrodes disposed on said sensor at a plurality of positions, wherein said sensor is configured to be placed against a patient’s skin; a t electronically coupled to each electrode of said plurality of odes, said circuit capable of measuring an electrical property from each electrode of said plurality of electrodes, and ing information regarding said electrical measurements; a processor electronically coupled to said t and configured to receive said information regarding said plurality of electrical measurements from said circuit and convert said information into a plurality of sub-epidermal moisture (SEM) values; a non-transitory computer-readable medium electronically coupled to said processor and comprising instructions stored thereon that, when executed on said processor, perform the steps of: identifying a first average idermal re (SEM) value corresponding to a first subset of said plurality of electrodes at a first location on a t’s skin, fying a second average SEM value corresponding to a second subset of said plurality of electrodes corresponding to a second location on said patient’s skin, and determining a difference between said first and second average SEM values, wherein the magnitude of the difference exceeding a predetermined value is indicative of compartment syndrome. 43721257_1

14. The apparatus of claim 13, wherein said first and second locations are symmetric with respect to a centerline of the patient’s body.

15. The tus of claim 13, wherein said first average SEM value exceeding said second average SEM value by said ermined value is indicative of compartment syndrome at said first location.

16. The apparatus of claim 13, wherein said second average SEM value exceeding said first average SEM value by said predetermined value is indicative of compartment syndrome at said second location. Bruin Biometrics, LLC By the Attorneys for the ant SPRUSON & FERGUSON 43721257_1 ELECTRCQE ARRAY 292 QDE m 29% SUBSYRATE FIG 53