Thermoresponsive skin barrier appliances

Patent metadata

Field	Value
Publication number	US-11890219-B2
Application number	US-201916686233-A
Country	US
Kind code	B2
Filing date	Nov 18, 2019
Priority date	Apr 17, 2014
Publication date	Feb 6, 2024
Grant date	Feb 6, 2024

Abstract

Thermoresponsive skin barrier assemblies are disclosed. One such wound treatment assembly includes a pump configured to expel a biosealant to a pump output port when subjected to a thermal stimulus, and an adhesive substrate layer for covering the wound. The adhesive substrate layer includes a conduit configured to transport the biosealant from the output port to the wound. The assembly further includes a control module in signal communication with a wound leakage sensor configured to activate a heating element disposed in proximity to the pump when wound leakage is detected.

First claim

What is claimed is:

1. An ostomy apparatus, comprising:
a substrate configured to adhere to a user's skin;
an electrode array including a first electrode pair and a second electrode pair arranged on the substrate; and
a control module coupled to the electrode array, the control module configured to determine:
a first change in impedance of the first electrode pair to determine a first propagation direction of moisture absorbed by the substrate; and
a second change in impedance of the second electrode pair to determine a second propagation direction of moisture absorbed by the substrate.

2. The ostomy apparatus of claim 1 , further comprising a stoma opening, wherein at least one of the first electrode pair or the second electrode pair circumferentially surrounds the stoma opening.

3. The ostomy apparatus of claim 1 , wherein the electrode array comprises more than two electrode pairs.

4. The ostomy apparatus of claim 1 , further comprising a stoma opening and wherein the first electrode pair and the second electrode pair circumferentially surround the stoma opening.

5. The ostomy apparatus of claim 1 , wherein the first electrode pair and the second electrode pair circumferentially surround the stoma opening and contact the substrate, and wherein the control module is configured to determine moisture propagation in a radial direction from the stoma opening using the first electrode pair and the second electrode pair.

6. The ostomy apparatus of claim 1 , wherein the control module is configured to generate a signal corresponding to an impending leakage based upon the change in impedance of at least one of the first electrode pair or the second electrode pair.

7. The ostomy apparatus of claim 6 , wherein the signal is auditory or vibratory.

8. The ostomy apparatus of claim 1 , wherein the substrate is a hydrocolloid layer.

9. The ostomy apparatus of claim 1 , wherein the electrode array is a printed array formed from a conductive ink.

10. The ostomy apparatus of claim 9 , wherein the electrode array is printed on a non-conductive polymeric substrate.

11. The ostomy apparatus of claim 1 , wherein the electrode array is in contact with the substrate.

12. The ostomy apparatus of claim 1 , wherein the control module is configured to determine an increase in moisture absorption by the substrate in response to determining a decrease in impedance of at least one of the first electrode pair or the second electrode pair.

13. The ostomy apparatus of claim 1 , wherein the substrate is a first substrate and the ostomy apparatus further comprises a second substrate arranged on top of the first substrate.

14. The ostomy apparatus of claim 13 , wherein the second substrate is a hydrocolloid layer.

15. The ostomy apparatus of claim 1 , wherein the control module wirelessly sends a signal corresponding to the change in impedance to another electronic device.

16. The ostomy apparatus of claim 1 , wherein the control module wirelessly sends a signal corresponding to usage statistics, appliance status, or both to another electrode device.

17. The ostomy apparatus of claim 1 , wherein the first electrode pair and the second electrode pair are arranged on different sides of the substrate, and wherein the control module is configured to determine moisture propagation in a vertical direction through the substrate using the first electrode pair and the second electrode pair.

Assignees

• Coloplast As

Inventors

• Schoess Jeffrey Norman
• Sivaprakasam Kannan

Classifications

• G01N27/223

  for determining moisture content, e.g. humidity (rain detectors on vehicle windows B60S1/0825) · CPC title

• A61F5/443 Primary

  having {adhesive seals for securing to the body, e.g. of} hydrocolloid type seals, e.g. gels, starches, karaya gums · CPC title

• A61F5/4404

  Details or parts · CPC title

• A61F5/445

  Colostomy, {ileostomy or urethrostomy} devices (A61F5/441, A61F5/442, A61F5/443 take precedence) · CPC title

• A61F13/42

  with wetness indicator or alarm · CPC title