Patent ID: 7338480

Claim:
A diagnosis catheter for an interstitial cystitis wherein a catheter is connected to a current perception threshold inspection apparatus to diagnose an interstitial cystitis, wherein the current perception threshold inspection apparatus indicates a current level at the time when a patient feels the current flow, the diagnosis catheter comprising: a catheter body made of a soft flexible material and including a bladder-dwelling distal end section and a diagnosis section adjacent said distal end section at a proximal end side of said body; a core member made of a hard flexible material and inserted into said diagnosis section in said catheter body; an inflatable balloon mounted on an outer periphery around said bladder-dwelling distal end section of said catheter body; a pair of electrodes provided on an outer periphery of said diagnosis section, wherein the electrodes supply electric current flow at a level such that it can be felt by the patient; lead wires inserted into said core member so that first ends of said lead wires are connected to said electrodes and second ends of said lead wires are drawn out of a proximal end of said catheter body to be connected to said current perception threshold inspection apparatus; and a fluid supply passage provided in said catheter body so that an end of said passage is communicated to said balloon and a proximal end of said passage is communicated to an injection part.