Biomedical Engineering Reference
In-Depth Information
4.3 Picture of an entire lead with functional segments. A, pulse generator; B,
connector module; C, lead connector. C is inserted into B by the surgeon in
the operation room. D, suture ring; E, defibrillation coil; F, ring anode (for
pacing); G, tip cathode (for pacing); H, lead body (courtesy ofMedtronic, Inc.).
within the first few days to weeks after implantation. Over time, the implanted
leads are integrated into the heart muscle.
Lead connector
Pacing leads are manufactured and packaged separately from pulse generators.
After preparing the pectoral pocket and positioning the leads in the patient, the
surgeon connects the leads and pulse generator by inserting the connector ends of
the leads into the cavities on the connector module of the pulse generator. The
function of the lead connector is to secure the mechanical and electrical connec-
tion between the generator and leads so that the electrical therapy generated in the
can is uninterrupted and properly delivered to the heart. The lead connector is
made of strong and rigid materials for this purpose. Resistance to corrosion and
4.4 (a) Active fixation, extendible/retractable helix electrode. (b) Passive
fixation, a tined tip electrode (courtesy of Medtronic, Inc.).
