Portable pump for draining fluid from a wound dressing

摘要

Wound healing is stimulated by applying a porous dressing from which fluid is drawn into canister 100 via a catheter using portable suction pump 6 which is contained in housing 210 and is worn on a harness or belt. Overfilling of canister 100 is prevented by a filter contained in the canister and a pressure sensor which detects pressure reductions in tube 103 between canister 100 and pump 6 which occur when drainage liquid covers the filter. Contamination of pump 6 is prevented by a further filter placed between pump 6 and canister 100 and pressure at the wound site is monitored by a conduit connected to the porous dressing.