Non-contaminating probe and methods of making and using same

A tube assembly for insertion into an anatomical canal, the assembly comprising:

• a hollow tube having first and second ends and an axial lumen spanning therebetween;
• a guide comprising a first part for passing over said catheter, and a second part engageable with said first part to form a fit therebetween;
• a membrane comprising a perfluoropropylvinylether modified polytetrafluoroethylene resin having a first end, a second end, and a sealed generally tubular body spanning therebetween, said first end of said membrane attached to said guide such that said membrane is interposed between said first and second guide parts.

A catheter for aiding in the prevention of the passage of infectious material when inserted into an anatomical canal, said catheter comprising:

• a hollow catheter tube having first and second open ends;
• a membrane comprising a sintered, tensilized, perfluoropropylvinylether modified polytetrafluoroethylene resin wherein said membrane is generally tubular and is disposed within said catheter tube and is suitably removed from said first open end of said catheter tube such that said membrane is interposed between said catheter and said anatomical canal as said catheter is inserted into said anatomical canal.