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Reduced pressure therapy blockage detection

  • US 10,610,624 B2
  • Filed: 08/18/2017
  • Issued: 04/07/2020
  • Est. Priority Date: 03/14/2013
  • Status: Active Grant
First Claim
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1. A negative pressure wound therapy apparatus comprising:

  • a source of negative pressure configured to be fluidically connected to a dressing configured to be placed over a wound, the source of negative pressure being configured to aspirate fluid from the wound; and

    a controller programmed to;

    detect or cause detection of presence of at least one temporary blockage in a fluid flow path comprising the source of negative pressure, a canister configured to store fluid aspirated from the wound, and the dressing, the at least one temporary blockage being caused by fluid aspirated from the wound being aspirated into the canister; and

    clear or cause clearance of the at least one temporary blockage by increasing a level of negative pressure provided by the source of negative pressure,wherein the controller is programmed to detect or cause detection of presence of the at least one temporary blockage by deactivating or causing deactivation of the source of negative pressure and detecting or causing detection of a substantially discontinuous decay of negative pressure in the fluid flow path while the source of negative pressure is deactivated.

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