| 摘要 |
<p>A cardiac lead (10) is provided that includes a connector (16) for connecting to a cardiac stimulator (24) and a flexible sleeve (12) coupled to the connector (16). The sleeve has a first segment (14), a second segment (18) and a jacket (22) coupling the first segment and the second segment. The jacket is composed of a shape-memory polymeric material, which deforms diametrically in situ to selectively disconnect the first segment from the second segment. An electrode (20) is coupled to the sleeve and a conductor is disposed in the sleeve and coupled to the connector and the electrode for conveying electrical signals. The breakaway function of the jacket allows removal of all but a small portion of the lead without dissection of fibrous tissue.</p> |
