US 12,329,896 B2
Systems and methods for extending operational time of negative pressure wound treatment apparatuses
Ben Alan Askem, Leeds (GB); John Philip Gowans, Hessle (GB); William Kelbie, Inverness (GB); Damyn Musgrave, Cottenham (GB); Roberto Damiao Da Costa Rodrigues, Hull (GB); and Daniel Lee Steward, Hull (GB)
Assigned to T.J. Smith and Nephew, Limited, Hull (GB)
Filed by T.J. Smith and Nephew, Limited, Hull (GB)
Filed on Apr. 19, 2024, as Appl. No. 18/641,163.
Application 18/641,163 is a continuation of application No. 17/613,456, granted, now 12,005,182, previously published as PCT/EP2020/064601, filed on May 26, 2020.
Claims priority of application No. 1907716 (GB), filed on May 31, 2019.
Prior Publication US 2024/0269369 A1, Aug. 15, 2024
Int. Cl. A61M 1/00 (2006.01); A61F 13/05 (2024.01)
CPC A61M 1/962 (2021.05) [A61F 13/05 (2024.01); A61M 2205/16 (2013.01); A61M 2205/3344 (2013.01); A61M 2205/82 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A negative pressure wound therapy system comprising:
a negative pressure source configured to supply negative pressure to a wound covered by a wound dressing; and
an electronic circuitry comprising:
a power source configured to provide power to the negative pressure source;
a boost converter configured to increase a level of power provided by the power source; and
a controller configured to:
in response to a determination that a capacity of the power source satisfies a first capacity threshold, cause the boost converter to provide power to the negative pressure source at a first power level and cause the negative pressure source to supply negative pressure to the wound at a first negative pressure level; and
in response to a determination that the capacity of the power source does not satisfy the first capacity threshold, cause the boost converter to provide power to the negative pressure source at a second power level lower than the first power level and cause the negative pressure source to supply negative pressure to the wound at a second negative pressure level that is more positive than the first negative pressure level.