Electrically stimulated mask and/or associated components

Patent metadata

Field	Value
Publication number	US-9687619-B2
Application number	US-201214357127-A
Country	US
Kind code	B2
Filing date	Nov 8, 2012
Priority date	Nov 8, 2011
Publication date	Jun 27, 2017
Grant date	Jun 27, 2017

Abstract

A respiratory assistance component is disclosed that changes shape when an electrical charge is provided. The amount of electrical charge that is applied may be based on values, characteristics, or user controlled parameters of the respiratory assistance system. The component may be all or part of a patient interface, a tube, a flow generator, and/or a sleep mat.

First claim

What is claimed is:

1. A respiratory assistance component comprising:
a first conduit and a second conduit that are both configured to supply breathable gas to a patient, each one of the first and second conduits comprising electro active polymer that causes the respective conduit to change shape and/or size between a first non-energized state, when no electrical voltage or current is applied to the electro active polymer, and a second energized state, when voltage or current is applied to the electro active polymer, wherein the electro active polymer of the first conduit and the electro active polymer of the second conduit are configured to be selectively energized by a power source that is controlled by a controller,
wherein a flow of the supplied breathable gas that is supplied to the patient through at least one of the first and second conduits is measured and flow data is provided to the controller, which determines when a reduction in flow occurs in one of the first and second conduits based on the measured flow data and, in response to the determination, causes the power source to selectively energize at least one of the first and second conduits so as to modify or maintain an aspect of the respiratory assistance provided to the patient.

2. The respiratory assistance component of claim 1 , wherein the first non-energized state of the electro active polymer of the first conduit corresponds to a collapsed configuration of the first conduit and the second energized state of the electro active polymer corresponds to an open configuration of the first conduit.

3. The respiratory assistance component of claim 1 , wherein the second energized state of the electro active polymer of the first conduit decreases an amount of bending along the length of the first conduit compared to the first non-energized state.

4. The respiratory assistance component of claim 1 , wherein:
the first and second conduits each comprise a flexible tubular body,
the electro active polymer of the respective first and second conduits is a helically shaped electro active polymer strip disposed to the respective flexible tubular body,
wherein the flexible tubular body of each conduit is configured to expand radially and/or axially in accordance with the change from the first state to the second state of the respective helically shaped electro active polymer strip.

5. The respiratory assistance component of claim 1 , wherein at least one of the conduits comprises a flexible tubular body and the corresponding electro active polymer of the first conduit includes a plurality of electro active polymer strips disposed to the flexible tubular body and distributed along a length of the flexible tubular body.

6. The respiratory assistance component of claim 5 , wherein the plurality of electro active polymer strips comprises pairs of electro active polymer strips that are distributed along the length of the flexible tubular body, at least one of the pairs comprising two electro active polymer strips disposed on substantially opposing sides of the flexible tubular body.

7. The respiratory assistance component of claim 1 , wherein the first and second conduit are configured to extend up respective sides of a face of a patient when in use.

8. The respiratory assistance component of claim 1 , wherein the change in shape and size is a change between collapsed and open configurations.

9. The respiratory assistance component of claim 1 , wherein responsive to detection of the reduction in flow in one of the first and second conduits, the other one of the first and second conduits is energized.

10. The respiratory assistance component of claim 1 , wherein at least one of the first and second conduits is of a longitudinal shape and the second energized state of the at least one conduit increases the length of the at least one first.

11. The respiratory assistance component of claim 1 , wherein the electro active polymer of at least one of the first conduit and the second conduit includes a plurality of selectively chargeable portions.

12. The respiratory assistance component of claim 11 , wherein the arrangement of the selectively chargeable portions of the electro active polymer of the at least one conduit is configured to bend based on selective application of a charge applied to respective ones of the plurality of selectively chargeable portions.

13. The respiratory assistance component of claim 1 , wherein the electro active polymer of at least one of the first conduit and the second conduit is configured to be stepwise adjusted in shape and/or size based on stepwise application of the voltage or current.

14. The respiratory assistance component of claim 1 , further comprising a force sensor configured to detect a force applied to at least one of the first and the second conduit.

15. The respiratory assistance component of claim 14 , wherein the voltage or current is applied to the first or second conduit responsive to the detected force exceeding a predetermined amount.

16. The respiratory assistance component of claim 1 , wherein the electro active polymer of at least one of the conduits is disposed on one of an inner surface of the least one of the conduit, an outer surface of the least one of the conduit, or is sandwiched between a pair of dielectric layers of the least one of the conduit.

17. A continuous positive airway pressure (CPAP) system comprising:
a patient interface arranged to create a seal around the patient's mouth, nose, or mouth and nose; and
the respiratory assistance component of claim 1 , wherein at least one of the first and the second conduit is configured to provide delivery of breathable gas to the patient interface.

Assignees

• Resmed Ltd

Inventors

• Stuebiger Kai
• Formica Justin John
• Davidson Aaron Samuel
• Rummery Gerard Michael
• Dennis Clancy John
• Holley Liam

Classifications

• A61M2205/332

  Force measuring means · CPC title

• A61M2205/0283

  Electro-active polymers [EAP] · CPC title

• A61H2201/0228

  heated by an electric resistance element · CPC title

• A61M16/0605

  Means for improving the adaptation of the mask to the patient · CPC title

• A61H2201/0207

  heated · CPC title