Patent ID: 9707112
Date: 2017-07-18
CPC Classifications: A61F

Claim:
1. A concentric tube catheter for positioning a polymeric urethral stent implementing resistance heating comprising: a concentric tubular catheter; a static pressure control assembly; a variable pressure control assembly; a heating control system; the concentric tubular catheter comprising an outer catheter tube, an inner catheter tube and an inflatable bladder; the outer catheter tube and the inner catheter tube each comprising an insertion end; the heating control assembly comprising a heating wire and a current controller; an open end of the inner catheter tube traversing through a closed end of the outer catheter tube; the inner catheter tube being mounted concentrically within the outer catheter tube; the inflatable bladder being mounted on the insertion end of the outer catheter tube; the static pressure control assembly being in fluid communication with the outer catheter tube, adjacent to the closed end of the outer catheter; the variable pressure control assembly being in fluid communication with the open end of the inner catheter tube; the heating wire being concentrically positioned within the inner catheter tube; the current controller being electrically connected to the heating wire; the static pressure assembly comprising a turn knob, a female threaded cylinder and a male threaded piston; the female threaded cylinder comprising a first end and a second end; the turn knob being axially connected to the male threaded piston; the male threaded piston sealably engaging the female threaded cylinder; the male threaded piston traversing through the first end of the female threaded cylinder; and the second end of the female threaded cylinder being in fluid communication with the outer catheter tubing.