Medical therapy systems and methods of using the same

A medical device, comprising:

• a shaft defining a lumen along a longitudinal axis, wherein the shaft includes at least one opening through an outer surface of the shaft, the at least one opening in fluid communication with the lumen;
• a porous body disposed over the at least one opening of the shaft and configured to expand laterally outward relative to the longitudinal axis;
• and
• a constricting member engaged against the porous body and movable relative to the porous body, wherein the constricting member is configured to apply a constraining force against the porous body;
• wherein the shaft is configured to receive fluid into the lumen via the opening and through the porous body after the constricting member moves the porous body from a collapsed state to an expanded state.

A method of withdrawing fluids with a medical device, the medical device including a shaft, an expandable porous body disposed along the shaft, and a constricting device in contact with the expandable porous body;

• the method comprising:
• moving the constricting device relative to the expandable porous body to allow expansion of the expandable porous body about the shaft;
• applying suction through the shaft;
• and
• withdrawing fluid through the expandable porous body and into the shaft via one or more openings disposed between the expandable porous body and the shaft.