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Autonomous fluid instillation system and method with tissue site pressure monitoring

  • US 9,907,940 B2
  • Filed: 12/05/2014
  • Issued: 03/06/2018
  • Est. Priority Date: 12/18/2013
  • Status: Active Grant
First Claim
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1. A method for providing fluid to a tissue site, comprising:

  • fluidly coupling an instillation therapy system to the tissue site;

    operating the instillation therapy system in a training mode, comprising;

    measuring and storing a reduced pressure at the tissue site at a first time,measuring and storing a reduced pressure at the tissue site at a second time, andcomparing the reduced pressure at the first time to the reduced pressure at the second time,storing the reduced pressure at the second time as a minimum reduced-pressure if the reduced pressure at the first time is greater than the reduced pressure at the second time,storing the reduced pressure at the second time as a maximum reduced-pressure if the reduced pressure at the first time is less than the reduced pressure at the second time,repeating the steps of measuring and storing a reduced pressure at the tissue site at a first time, measuring and storing a reduced pressure at the tissue site at a second time, and comparing the reduced pressure at the first time to the reduced-pressure at the second time until the reduced pressure at the first time is substantially the same as the reduced pressure at the second time, and in response, determining that a pressure profile is in at least one of a reduced-pressure therapy period or a soak period,measuring and storing a reduced pressure at the tissue site at a third time in response to determining that the pressure profile is in at least one of a reduced-pressure therapy period or a soak period,comparing the reduced pressure at the third time to the maximum reduced-pressure,determining that the pressure profile is in a reduced-pressure therapy period if the reduced pressure at the third time is substantially the same as the maximum reduced-pressure,comparing the reduced pressure at the third time to the minimum reduced-pressure if the reduced pressure at the third time is less than the maximum reduced-pressure, anddetermining that the pressure profile is in a soak period if the reduced pressure at the third time is substantially the same as the minimum reduced-pressure;

    determining the pressure profile of a reduced pressure source fluidly coupled to the tissue site in response to the training mode; and

    delivering fluid in response to the pressure profile.

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