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US 2001/0018607 A1Published application
Co-extruded, multi-lumen medical lead
AssigneeMedtronic, Inc.
InventorsSvenn E. Borgersen, Hans W. Kramer
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AssigneeMedtronic, Inc.
InventorsSvenn E. Borgersen, Hans W. Kramer
Estimating the term…
Medical electrical leads for sensing or electrical stimulation of body organs or tissues, particularly implantable cardiac leads for delivering pacing pulses and cardioversion/defibrillation shocks, and/or sensing the cardiac electrogram (EGM) or other physiologic data and their methods of fabrication are disclosed. A lead body sheath is co-extruded in a co-extrusion process using biocompatible, electrically insulating, materials of differing durometers in differing axial sections thereof, resulting in a unitary lead body sheath having differing stiffness sections including axial segments or webs or lumen encircling rings or other structures in its cross-section. The lead body sheath is co-extruded to have an outer surface adapted to be exposed to the environment or to be enclosed within an outer sheath and to have a plurality of lead conductor lumens for receiving and enclosing a like plurality of lead conductors of the same or differing types. The lead body sheath can be co-extruded of a plurality of sheath segments containing a lead conductor lumen and formed of a first durometer material or of differing durometer materials. A web of a further durometer material can be co-extruded extending between the adjoining boundaries of the axial sheath segments and bonding the adjacent segments together. The lead body sheath can be tailored to exhibit differing bending stiffnesses away from the lead body sheath axis in selected polar directions around the 360° circumference of the sheath body.
In a medical electrical lead for implantation within the living body of the type comprising an elongated lead body enclosing a plurality of lead conductors each extending between a distal a distal electrode or sensor element and a proximal connector element, the improvement in the lead body comprising:
In a medical electrical lead for implantation within the living body of the type comprising an elongated lead body enclosing a plurality of lead conductors each extending between a distal a distal electrode or sensor element and a proximal connector element, the improvement in the lead body comprising:
A method of manufacturing the lead body of a medical electrical lead for implantation within the living body of the type comprising an elongated lead body enclosing a plurality of lead conductors each extending between a distal a distal electrode or sensor element and a proximal connector element, the method comprising the steps of:
A method of manufacturing the lead body of a medical electrical lead for implantation within the living body of the type comprising an elongated lead body enclosing a plurality of lead conductors each extending between a distal a distal electrode or sensor element and a proximal connector element, the method comprising the steps of:
Dependencies are inferred from the claim text.