Abstract: A pump for oscillating a fluid into and out from a body area. The pump forms a fluid chamber for holding the fluid, and comprises a piston for forcing fluid outward from the fluid chamber and into the body, and for drawing fluid inward from the body and into the fluid chamber. A motor is connected to the piston, and a control circuit is connected to the motor to control movement of the piston. The control circuit has a first state actuating the motor to force the fluid into the body, and a second state actuating the motor to draw the fluid from the body, and the control circuit may be adjusted to vary the rates at which fluid is forced into and drawn from the body.

Abstract: Method for dissolving cholesterol calculus in vitro or in vivo comprising contacting the cholesterol calculus with methyl tertiary-butyl ether.

Abstract: Method and means for distributing therapeutic agents in a localized area of a patient's body comprising introducing a therapeutic area of a patient's body and agitating the therapeutic agent in the localized area of a patient's body by introducing an oscillating liquid to the localized area in an amount effective to facilitate distribution of the therapeutic agent therein.

Abstract: A pump for oscillating a fluid into and out from a body area. The pump forms a fluid chamber for holding the fluid, and comprises a piston for forcing fluid outward from the fluid chamber and into the body, and for drawing fluid inward from the body and into the fluid chamber. A motor is connected to the piston, and a control circuit is connected to the motor to control movement of the piston. The control circuit has a first state actuating the motor to force the fluid into the body, and a second state actuating the motor to draw the fluid from the body, and the control circuit may be adjusted to vary the rates at which fluid is forced into and drawn from the body.

Abstract: A method for dissolving a solidified mass in vivo, and apparatus for oscillating a fluid into and out from a body area. The method comprises introducing a dissolving agent into a body area, and oscillating an agitating fluid into and out from that body area to stir the dissolving agent therein. Body fluids withdrawn from the body area with the agitating fluid are separated therefrom, and the separated agitating fluid is reintroduced into the body area to further stir the dissolving agent. The apparatus comprises a pump to force fluid into and to draw the fluid from a body area, a trap for collecting body fluids aspirated from the body area, and fluid lines to connect the pump to the trap and the trap to the body area.