Abstract: The present invention provides a self-withdrawing catheter device for injection of material into a body passageway, comprising: a) a highly-flexible elongated shaft including at least one injection channel, attachable to a syringe; b) a canopy attached to the shaft near the distal end, the canopy providing smooth self-withdrawal of the catheter from within a body passageway, due to backward fluid pressure exerted upon said canopy after injection of material through said catheter. The invention also provides a surgical method and kit for fistular repair, comprising the afore-mentioned catheter, an additional balloon catheter for injecting fluids to clear a fistula, a debriding brush, a guide wire for aiding in inserting the components into the fistula, and hooks and ties for connecting these elements and drawing them into the fistula.

Abstract: A catheter according to the present invention comprises a tube having a distal end and an open proximal end; at least one fluid conduit disposed within and along the tube, the fluid conduit having open proximal end and a closed distal end; an expandable balloon in fluid communication with the at least one fluid conduit; and anchoring means for securely engaging the catheter in a passage, the anchoring means being located on a surface of the balloon and operable by the expansion of the balloon.