US 12,470,081 B2
Power source charging for negative pressure wound therapy apparatus
Matthew Ash, Cambridge (GB); Damyn Musgrave, Cottenham (GB); and Felix Clarence Quintanar, Hull (GB)
Assigned to Smith & Nephew Asia Pacific Pte. Limited, Singapore (SG)
Filed by Smith & Nephew Asia Pacific Pte. Limited, Singapore (SG)
Filed on Mar. 21, 2024, as Appl. No. 18/612,853.
Application 18/612,853 is a continuation of application No. 17/043,415, granted, now 11,955,829, previously published as PCT/IB2019/053507, filed on Apr. 29, 2019.
Claims priority of application No. 1806988 (GB), filed on Apr. 30, 2018.
Prior Publication US 2024/0305126 A1, Sep. 12, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H02J 7/00 (2006.01); A61M 1/00 (2006.01)
CPC H02J 7/007194 (2020.01) [H02J 7/0048 (2020.01); A61M 1/962 (2021.05); A61M 2205/3331 (2013.01); A61M 2205/583 (2013.01); A61M 2205/8206 (2013.01); A61M 2205/8237 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A negative pressure wound therapy device comprising:
a negative pressure source configured to provide negative pressure wound therapy to a wound covered by a wound dressing;
a power source configured to provide power to the negative pressure source; and
an electronic processing circuitry configured to:
responsive to a determination that a temperature of the power source is below a first temperature threshold, provide a first charging power to the power source;
responsive to a determination that the temperature of the power source is above the first temperature threshold, provide a second charging power to the power source, the second charging power being lower the first charging power; and
responsive to a determination that the temperature of the power source is below a second temperature threshold, disable provision of power by the power source to the negative pressure source and cause the negative pressure source to cease provision of negative pressure wound therapy to the wound.