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 0:
1. A negative pressure wound therapy device comprising:
a negative pressure source configured to provide negative pressure to a wound via a fluid flow path;
a power source configured to power the negative pressure source; and
a charging circuitry configured to monitor a temperature of the power source and charge the power source, the charging circuitry further configured to:
determine 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, provide a first charging power to the power source;
determine 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, provide a second charging power to the power source, the second charging power being lower the first charging power;
while the second charging power is provided to the power source:
determine 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, provide the first charging power to the power source;

determine 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, disable provision of power by of the power source;
determine 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, disable provision of power by the power source.