| 摘要 |
An electrode lead for intracorporeal stimulation of body tissue includes a tubular electrode cable and a removable stylet therein for guiding the cable during insertion through a blood vessel and heart chambers. The electrode cable has a flexible conductor extending through an insulating sheath which has a tubular shape forming a lumen. An exposed electrode, to which the conductor connects, closes a distal end of the electrode cable, while the proximate end of the electrode cable is grasped by an operator. The stylet extends from the distal cable end to the proximate end and engages the operator. The stylet has an outer tube forming a stylet lumen with a longitudinal axis and an inner wire which extends through the stylet lumen. The inner wire and outer tube are attached on one side of the longitudinal axis adjacent their distal ends, so that movement of the inner wire with respect to the outer tube causes curvature of the outer tube which in turn bends the electrode cable for steering through the blood vessel. After the electrode cable has been positioned at the desired location for stimulation, the stylet is removed.
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