Patent ID: 11955829
Assignee: SMITH & NEPHEW ASIA PACIFIC PTE. LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  A | IPC A  H

Claim 10:
11. A method of operating a negative pressure wound therapy device, the method comprising:
by a charging circuitry of the negative pressure wound therapy device:
monitoring a temperature of a power source of the negative pressure wound therapy device and charging the power source;
at a first time, determining that the temperature of the power source is below a first temperature threshold;
in response to determining that the temperature of the power source is below the first temperature threshold, providing a first charging power to the power source;
at a second time, determining that the temperature of the power source has reached or is above the first temperature threshold;
in response to determining that the temperature of the power source has reached or is above the first temperature threshold, providing a second charging power to the power source, the second charging power being lower than the first charging power;
while providing the second charging power to the power source:
at a third time, determining that the temperature of the power source has fallen below the first temperature threshold; and
in response to determining that the temperature of the power source has fallen below the first temperature threshold, providing the first charging power to the power source;

at a fourth time, determining that the temperature of the power source is below a second temperature threshold;
in response to determining that the temperature of the power source is below the second temperature threshold, disabling provision of power by the power source;
at a fifth time, determining that the temperature of the power source is above a third temperature threshold; and
in response to determining that the temperature of the power source is above the third temperature threshold, disabling provision of power by the power source.