Catheter and endoscope assembly and method of use

A method of positioning a catheter assembly including a catheter and an endoscope in a body vessel or cavity for treatment therein, the catheter having a hollow tubular member defining a lumen, the catheter further having a proximal end, a distal end, an inflatable occlusion cuff on the distal end, and a guide wire lumen provided internally of the occlusion cuff, the endoscope having a distal portion with a guide wire tip provided at the endoscope distal portion and with the guide wire tip having an aperture provided therethrough, comprising the steps of:

• insetting a guide wire having a distal tip and a proximal end with the body vessel or cavity until the guide wire distal tip reaches a desired location in the body vessel or cavity;
• extending the endoscope through the lumen of the catheter with the guide wire tip extendable beyond the catheter distal end;
• threading the proximal end of the guide wire through the guide wire tip aperture of the endoscope;
• and
• threading the proximal end of the guide wire through the guide wire lumen of the catheter.