US 11,938,263 B2
Apparatuses, systems, and methods for pump control in therapy devices
Justin Alexander Long, Lago Vista, TX (US); Christopher Brian Locke, Bournemouth (GB); and Thomas Alan Edwards, Hampshire (GB)
Assigned to Solventum Intellectual Properties Company, Maplewood, MN (US)
Appl. No. 17/636,233
Filed by KCI Licensing, Inc., San Antonio, TX (US)
PCT Filed Sep. 22, 2020, PCT No. PCT/IB2020/058840
§ 371(c)(1), (2) Date Feb. 17, 2022,
PCT Pub. No. WO2021/059127, PCT Pub. Date Apr. 1, 2021.
Claims priority of provisional application 62/904,911, filed on Sep. 24, 2019.
Prior Publication US 2022/0339343 A1, Oct. 27, 2022
Int. Cl. A61M 1/00 (2006.01)
CPC A61M 1/74 (2021.05) [A61M 1/85 (2021.05); A61M 1/96 (2021.05); A61M 1/912 (2021.05); A61M 1/94 (2021.05); A61M 2205/0294 (2013.01); A61M 2205/3331 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A wound therapy device comprising:
a battery;
a pump including at least four operating modes, the pump configured to be worn by a user; and
a controller coupled to the pump and configured to transition the pump from operating in a first operating mode to operating in a second operating mode responsive to a pressure of the wound therapy device satisfying a first pressure threshold and to transition the pump from operating in the second operating mode to a third operating mode or a fourth operating mode responsive to a condition being satisfied, wherein
the first operating mode is associated with a first drive voltage that is greater than a second drive voltage associated with the second operating mode,
the third operating mode delivers a first therapeutic amount of pressure from the pump, the first therapeutic amount of pressure being less than a second therapeutic amount of pressure delivered by the pump in the second operating mode,
the fourth operating mode delivers a third therapeutic amount of pressure from the pump, the third therapeutic amount of pressure being less than the second therapeutic amount of pressure delivered by the pump in the second operating mode, the fourth operating mode being activated in response to the condition being satisfied when a battery level of the battery fails to satisfy a battery threshold,
the fourth operating mode is associated with a third drive voltage that is less than the second drive voltage; and
the first therapeutic amount of pressure, the second therapeutic amount of pressure, and the third therapeutic amount of pressure are non-zero amounts of pressure.
 
12. A method for providing wound therapy, the method comprising:
identifying a power-on event of a wound therapy device, the wound therapy device configured to be worn by a user;
responsive to the power-on event, operating a pump of the wound therapy device in a first operating mode, the pump including at least four operating modes and the first operating mode being associated with a first drive voltage;
receiving, from a pressure sensor of the wound therapy device, pressure data indicating a pressure applied by the pump;
determining whether the pressure satisfies a first pressure threshold;
responsive to determining that the pressure satisfies the first pressure threshold, operating the pump in a second operating mode, the second operating mode associated with a second drive voltage, wherein the first drive voltage is greater than the second drive voltage;
determining whether the wound therapy device satisfies a condition; and
responsive to determining that the wound therapy device satisfies the condition, operating the pump in a third operating mode or a fourth operating mode, the third operating mode delivering a first therapeutic amount of pressure from the pump and the fourth operating mode delivering a third therapeutic amount of pressure from the pump, the first therapeutic amount of pressure and the third therapeutic amount of pressure being less than a second therapeutic amount of pressure delivered by the pump in the second operating mode,
wherein the fourth operating mode is activated in response to the condition being satisfied when a battery level of a battery of the wound therapy device fails to satisfy a battery threshold, the fourth operating mode is associated with a third drive voltage that is less than the second drive voltage, and the first therapeutic amount of pressure, the second therapeutic amount of pressure, and the third therapeutic amount of pressure are non-zero amounts of pressure.
 
20. A wound therapy device comprising:
a battery;
a pump configured to be worn by a user; and
a controller coupled to the pump and configured to operate the pump in one of at least four operating modes, wherein a first operating mode of the at least four operating modes is associated with a first drive voltage, wherein a second operating mode of the at least four operating modes is associated with a second drive voltage and a first duty cycle range of the pump, the second drive voltage less than the first drive voltage, and wherein a third operating mode of the at least four operating modes is associated with a second duty cycle range of the pump, the second duty cycle range different from the first duty cycle range, wherein
the third operating mode delivers a first therapeutic amount of pressure from the pump, the first therapeutic amount of pressure being less than a second therapeutic amount of pressure delivered by the pump in the second operating mode,
a fourth operating mode of the at least four operating modes delivers a third therapeutic amount of pressure from the pump, the third therapeutic amount of pressure being less than the second therapeutic amount of pressure delivered by the pump in the second operating mode, the fourth operating mode being activated in response to a battery level of the battery failing to satisfy a battery threshold,
the fourth operating mode is associated with a third drive voltage that is less than the second drive voltage; and
the first therapeutic amount of pressure, the second therapeutic amount of pressure, and the third therapeutic amount of pressure are non-zero amounts of pressure.