NEGATIVE PRESSURE ASSISTED TISSUE TREATMENT SYSTEM

摘要

A system for stimulating the healing of tissue comprises a porous pad positioned within a wound cavity, and an airtight dressing secured over the pad, so as to provide an airtight seal to the wound cavity. A proximal end of a conduit is connectable to the dressing. A distal end of the conduit is connectable to a negative pressure source, which may be an electric pump housed within a portable housing, or wall suction. A canister is positioned along the conduit to retain exudates suctioned from the wound site during the application of negative pressure. A controller for automated oscillation of pressure over time is provided to further enhance and stimulate the healing of an open wound. A power management motor control for varying pump drive frequency and managing a portable power supply is provided to increase battery life and improve patient mobility.

主权项

1. A system for stimulating healing of tissue at a wound site to be covered by a drape for treatment, the system comprising:
a pumping mechanism adapted to deliver negative pressure to a wound cavity between the drape and the wound site, the pumping mechanism including a pump and an electric motor for driving the pump to generate the negative pressure; a pressure sensor adapted to measure the negative pressure being provided by the pump and to provide an output indicative of the negative pressure being measured as an actual pressure; and a power management motor control that compares the actual pressure to a target pressure and determines a tentative motor drive power for reaching the target pressure, and then either (i) applies the tentative motor drive power to the electric motor when the tentative motor drive power is greater than or equal to the stall power of the electric motor or (ii) prevents the tentative motor drive power from being applied to the electric motor if the tentative motor drive power is less than the stall power of electric motor.