A system for delivering negative pressure and vibrations proximate a wound site, comprising: a dressing adapted to be fluidly coupled to the wound site and further adapted to translate vibrations to the wound site; a pad having a pressure port adapted to be coupled to a source of negative pressure and to be fluidly coupled to the dressing , and further having a vibration frame having an opening adapted to be fluidly coupled to the wound site; a drape adapted to cover the dressing and the pad to form a seal between the wound site and the environment, the drape having an opening exposing the vibration frame to the environment; and a vibration module supported by the vibration frame and adapted to be fluidly coupled to the dressing for providing the vibrations, characterised in that the vibration module comprises: a carrier mounted within the vibration frame and having cylindrical walls closed at one end by a base and an opening opposite the base and concentric with the opening of the vibration frame , the base having a raised port extending into the carrier , and the cylindrical walls having a leak conduit adapted to allow a predetermined leak into the carrier ; a diaphragm sealing the opening of the carrier and being axially aligned with the raised port and configured to move axially toward the base in response to the application of negative pressure in the carrier ; and a biasing element disposed within the carrier between the diaphragm and the base , the biasing element being biased to move the diaphragm away from the base when negative pressure is removed from the carrier . a dressing adapted to be fluidly coupled to the wound site and further adapted to translate vibrations to the wound site; a pad having a pressure port adapted to be coupled to a source of negative pressure and to be fluidly coupled to the dressing , and further having a vibration frame having an opening adapted to be fluidly coupled to the wound site; a drape adapted to cover the dressing and the pad to form a seal between the wound site and the environment, the drape having an opening exposing the vibration frame to the environment; and a vibration module supported by the vibration frame and adapted to be fluidly coupled to the dressing for providing the vibrations, characterised in that the vibration module comprises: a carrier mounted within the vibration frame and having cylindrical walls closed at one end by a base and an opening opposite the base and concentric with the opening of the vibration frame , the base having a raised port extending into the carrier , and the cylindrical walls having a leak conduit adapted to allow a predetermined leak into the carrier ; a diaphragm sealing the opening of the carrier and being axially aligned with the raised port and configured to move axially toward the base in response to the application of negative pressure in the carrier ; and a biasing element disposed within the carrier between the diaphragm and the base , the biasing element being biased to move the diaphragm away from the base when negative pressure is removed from the carrier . a carrier mounted within the vibration frame and having cylindrical walls closed at one end by a base and an opening opposite the base and concentric with the opening of the vibration frame , the base having a raised port extending into the carrier , and the cylindrical walls having a leak conduit adapted to allow a predetermined leak into the carrier ; a diaphragm sealing the opening of the carrier and being axially aligned with the raised port and configured to move axially toward the base in response to the application of negative pressure in the carrier ; and a biasing element disposed within the carrier between the diaphragm and the base , the biasing element being biased to move the diaphragm away from the base when negative pressure is removed from the carrier . <EOS>