APPARATUS AND METHOD FOR WOUND TREATMENT EMPLOYING PERIODIC SUB-ATMOSPHERIC PRESSURE

摘要

A tissue treatment apparatus and method are provided for treating tissue by the application of the time-varying sub-atmospheric pressure. The apparat us includes a cover adapted to cover a wound and adapted to maintain sub-atm ospheric pressure the site of the wound. The apparatus further includes a so urce of suction configured to generate a time-varying sub-atmospheric pressu re having a periodic waveform comprising a gradual change in pressure. The s uction source cooperates with the cover to supply the time-varying sub-atmos pheric pressure under the cover to the wound. The time-varying sub-atmospher ic pressure may vary between a first pressure value below the inherent tissu e tension of the wound tissue and a second pressure value above the inherent tissue tension of the wound tissue.