Neurostimulation and monitoring using sensor enabled wound monitoring and therapy apparatus

Patent metadata

Field	Value
Publication number	US-11839464-B2
Application number	US-201816651119-A
Country	US
Kind code	B2
Filing date	Sep 24, 2018
Priority date	Sep 28, 2017
Publication date	Dec 12, 2023
Grant date	Dec 12, 2023

Abstract

An apparatus for monitoring neural response and/or providing treatment includes an electrical stimulator configured to apply electrical stimulation, and one or more processors configured to analyze stimulation response. The one or more processors can be further configured to operate the electrical stimulator, adjust the electrical stimulation, and determine one or more wound characteristics based at least in part on at least one of the electrical stimulation or the stimulation response, e.g. a movement of a patient, a color absorption characteristic, or other physiological responses. An indication of the one or more wound characteristics can be provided.

First claim

What is claimed is:

1. A wound monitoring and/or therapy apparatus, comprising:
an electrical stimulator configured to apply an electrical stimulation to a patient;
a motion detector configured to detect a movement of the patient;
a wound dressing configured to be positioned over a wound of the patient and configured to support the electrical stimulator; and
one or more processors coupled to the electrical stimulator and the motion detector, the one or more processors configured to:
operate the electrical stimulator to apply an electrical stimulation;
adjust the electrical stimulation based at least in part on at least one of a stimulation response or the movement of the patient;
determine one or more wound characteristics based at least in part on at least one of the electrical stimulation or the stimulation response, wherein determination of the one or more wound characteristics comprises determination of a nerve response in at least a portion of the wound; and
provide an indication of the one or more wound characteristics.

2. The apparatus of claim 1 , wherein the electrical stimulator is further configured to detect the stimulation response.

3. The apparatus of claim 1 , wherein the stimulation response includes at least one of patient movement responsive to the electrical stimulation or an electrical signal that is reactive to the electrical stimulation.

4. The apparatus of claim 1 , wherein the motion detector includes at least one of an accelerometer, an electromyography (EMG) detector, a magnetometer, or a gyroscope.

5. The apparatus of claim 1 , wherein the electrical stimulator comprises a plurality of electrodes.

6. The apparatus of claim 5 , wherein the plurality of electrodes are mounted on the wound dressing as an array.

7. The apparatus of claim 5 , wherein the one or more processors are configured to operate each electrode in turn and identify which electrode causes the greatest muscle contraction.

8. The apparatus of claim 7 , wherein the one or more processors are configured to determine the one or more wound characteristics based at least in part on the stimulation response to the electrical stimulation from the electrode identified as causing the greatest muscle contraction.

9. The apparatus of claim 1 , wherein the one or more processors are configured to adjust the electrical stimulation based on a determination that the stimulation response does not satisfy a stimulation response threshold.

10. The apparatus of claim 1 , wherein the one or more processors are further configured to determine one or more areas of neuropathy or nerve growth in at least the portion of the wound based at least in part on the one or more wound characteristics, and wherein the indication of the one or more wound characteristics comprises a visual map of the one or more areas of neuropathy or nerve growth.

11. The apparatus of claim 1 , wherein the one or more wound characteristics include an indication of nerve health, and wherein the one or more processors are configured to provide the indication of the one or more wound characteristics by displaying a map corresponding to the nerve health.

12. A wound monitoring and/or therapy apparatus, comprising:
an electrical stimulator configured to apply an electrical stimulation to a patient;
a motion detector configured to detect a movement of the patient;
a wound dressing configured to be positioned over a wound of the patient and configured to support the electrical stimulator; and
one or more processors coupled to the electrical stimulator and the motion detector, the one or more processors configured to:
operate the electrical stimulator to apply an electrical stimulation;
adjust the electrical stimulation based at least in part on at least one of a stimulation response or the movement of the patient;
determine one or more wound characteristics based at least in part on at least one of the electrical stimulation or the stimulation response;
provide an indication of the one or more wound characteristics; and
reduce intensity of or pause the electrical stimulation responsive to the movement of the patient satisfying one or more movement thresholds.

13. A method for controlling a wound monitoring and/or therapy apparatus, the method comprising:
applying an electrical stimulation to a wound at a first stimulation level via an electrical stimulator supported by a wound dressing configured to be positioned in over the wound;
detecting a first stimulation response to the electrical stimulation at the first stimulation level;
based at least in part on determining that the first stimulation response does not satisfy a stimulation response threshold:
adjusting the electrical stimulation to a second stimulation level,
applying the electrical stimulation to the wound at the second stimulation level, and
detecting a second stimulation response to the electrical stimulation at the second stimulation level;

determining a wound status based at least in part on at least one of the first or second stimulation levels or the first or second stimulation responses, wherein determining the wound status comprises determining a nerve response in at least a portion of the wound based at least in part on at least one of the first or second stimulation levels or the first or second stimulation responses; and
providing an indication of the wound status,
wherein the method is performed under control of a controller of the apparatus.

14. The method of claim 13 , further comprising:
monitoring a patient movement; and
responsive to the patient movement satisfying a movement threshold, adjusting the electrical stimulation to the second stimulation level.

15. The method of claim 13 , wherein the wound status includes an indication of nerve health, and wherein providing the indication of the wound status includes displaying a map corresponding to the nerve health.

16. The method of claim 13 , wherein the electrical stimulator includes a plurality of electrodes.

17. The method of claim 16 , wherein the plurality of electrodes are mounted on the wound dressing as an array.

18. The method of claim 17 , wherein each electrode of the plurality of electrodes is configured to transmit a different intensity level of electrical stimulation, and wherein adjusting the electrical stimulation comprises operating a different electrode.

19. The method of claim 18 , further comprising identifying an electrode that caused the first stimulation response to satisfy the stimulation response threshold and determining a progress of wound healing based on a determined stimulation response to the electrode.

20. The method of claim 13 , further comprising determining one or more areas of neuropathy or nerve growth in at least the portion of the wound based at least in part on the nerve response, wherein the indication of the wound status comprises a visual map of the one or more areas of neuropathy or nerve growth.

21. The method of claim 13 , further comprising:
monitoring a patient movement; and
reducing intensity of or pausing the electrical stimulation responsive to the patient movement satisfying one or more movement thresholds.

Assignees

• Smith & Nephew

Inventors

• Brownhill Varuni Rachindra
• Hammond Victoria Jody
• Hunt Allan Kenneth Frazer Grugeon
• Urwin Charlotte

Classifications

• A61B5/1109 Primary

  of wounds, e.g. at the operation site · CPC title

• A61B5/1032

  Determining colour of tissue for diagnostic purposes · CPC title

• A61B5/1104

  induced by stimuli or drugs (A61B5/1102 takes precedence) · CPC title

• A61B5/395

  Details of stimulation, e.g. nerve stimulation to elicit EMG response · CPC title

• A61B5/445

  Evaluating skin irritation or skin trauma, e.g. rash, eczema, wound, bed sore · CPC title