| abstract |
Apparatus and methods to treat skin defects include a pump (12) with a reservoir (22) for a pressurization gas and a fluid source (26), the fluid loaded at a factory and sealed or filled at point of use through a valve, septum, or the like. Upon activation, the pump (12) generates a gas introduced into the gas reservoir (22), a movable wall of which displaces a movable wall of a fluid source (26), thus dispensing the fluid into the distribution member (40) of the dressing (16) to spread throughout irrespective of orientation of the distribution member (40) or dressing (16), maintaining a transport fluid in the dressing and in contact with a skin defect being treated. Delivery may be periodic, constant, programmatically controlled, or manual. A dressing (16) may maintain intimate contact, a transport fluid, and a controllable concentration of active ingredient against a skin defect. |