Patent ID: 7787963

Claim:
An insertion device by which a medical instrument or an electrode line or a guide wire or a medical therapeutic agent may be inserted into a body cavity of a human or animal body, comprising: a. a lumen section formed of a flexible plastic material, having a longitudinal axis, a proximal end and a distal end, and a distal end area adjacent the distal end; b. at least one electrically conductive terminal in the distal end area to sense physiological signals or to stimulate the surrounding body tissue, the terminal: (1) being formed from a flexible, not exclusively metallic electrically conductive substrate, (2) being exposed both: i. at the distal end, and ii. along only a portion of an outer circumference of the distal end area; and c. at least one electrically conductive conductor extending from the proximal end to the distal end along a helical path, the conductor being capable of conducting physiological signals to the proximal end and/or simulation pulses to the distal end.