| 摘要 |
A single-pass body implantable lead for transvenous insertion through a single vein to simultaneously sense and/or stimulate the tissue of both the right atrium and right ventricle. The lead employs a single bifurcated connector at the proximal end. Insulated conductors for the ventricle and atrium are branched from a single outer sheath. The ventricular and atrial branches are established in fixed relation to one another. The ventricular branch is of sufficient length that it has excess length for the largest heart. The electrode of the ventricular branch is held within the right ventricular apex by tines. The atrial branch has a "J" shape imparted to the conductor coil. The atrial electrode is maintained in position within the right atrial appendage by tines. The ventricular branch is sufficiently flexible such that any excess length is merely coiled in some convenient position. The distal portion of the ventricular branch is made slightly more stiff than the proximal portion causing the excess length to loop within the atrium. Stylets are used to guide insertion.
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