Patent ID: 11957829
Assignee: KCI LICENSING INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 36:
37. A negative-pressure device comprising:
a negative-pressure source having a pump and an electric motor for driving the pump in response to an application of power from a battery;
a pressure sensor having an input for sensing a wound site pressure (WP) at a wound site and an output; and
a system controller coupled to the electric motor and the pressure sensor and configured to determine a flow rate (FR) of fluid between the pump and the wound site and to maintain the wound site pressure (WP) within a hysteresis control band, wherein the hysteresis control band includes a range of pressures determined by the system controller in real time based upon a balance of the flow rate (FR) and a battery charge level (BCL) of the battery.