| 摘要 |
A multi-conductor lead body having improved mechanical characteristics and improved manufacturability is disclosed. The lead body includes multiple conductors wound around a generally cylindrical or tubular, insulative core member. Ones of the conductors are spaced from other ones of the conductors by means of insulative strands or tubes wound around the core intermediate the conductors. The conductors may be stranded or cabled conductors. The core may be an insulative cylindrical or tubular member having a centrally located tensile reinforcement member, or may take the form of an insulated coiled conductor, allowing the use of a centrally located stylet to place the lead. Preferably, conductors and insulative strands or tubes separating the conductors are sized relative to the core member such that a gap is allowed between the conductors and associated insulative strands or tubes. In one embodiment, at least one of the conductors may be electrically and mechanically coupled to one or more electrodes such as a defibrillation electrodes. The electrodes may each be may be positioned along a respective portion of the outer surface of the conductor. Openings fashioned in the jacket of the lead body expose the electrodes so that the outer surface of the electrodes is substantially adjacent to the outer surface of the lead body, thus providing a lead body having minimal dimensions.
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