Lead body construction
First Claim
1. A lead comprising:
- a lead body comprising an inner member defining an outer peripheral surface formed with a helical groove, and an outer insulator positioned around the inner member;
a first electrode and a second electrode mounted on the lead body; and
at least two conductors received in the helical groove between the inner member and the outer insulator, wherein at least one of the at least two conductors is connected to the first electrode, and wherein at least one of the at least two conductors is connected to the second electrode.
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Accused Products
Abstract
An implantable cardiac stimulation lead system for use with a stimulation device includes a lead body preferably having an outer diameter of less than 4 French and formed of a biocompatible material having a Young'"'"'s modulus of at least 20,000 pounds per square inch. In the lead body, an inner insulator is composed of a suitable polymer such as PTFE or ETFE with an outer peripheral surface formed with a helical groove containing a conductor extending between a proximal connector and a distal tip electrode, and an outer insulator composed of polyurethane or silicone rubber or a combination thereof is positioned around the inner insulator. The lead system may be formed with a lumen for receiving a guidewire longitudinally through the lead body. A pair of insulated conductors may be received in the helical groove, one extending to the distal tip electrode, the other extending to a ring electrode proximally spaced from the distal tip electrode.
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Citations
15 Claims
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1. A lead comprising:
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a lead body comprising an inner member defining an outer peripheral surface formed with a helical groove, and an outer insulator positioned around the inner member;
a first electrode and a second electrode mounted on the lead body; and
at least two conductors received in the helical groove between the inner member and the outer insulator, wherein at least one of the at least two conductors is connected to the first electrode, and wherein at least one of the at least two conductors is connected to the second electrode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An implantable lead system for use with an implantable stimulation device, the lead system comprising:
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a lead body comprising an inner member defining an outer peripheral surface formed with a helical groove, and an outer insulator positioned around the inner insulator;
a first electrode and a second electrode mounted on the outer insulator;
at least two conductors received in the helical groove between the inner member and the outer insulator, wherein at least one of the at least two conductors is connected to the first electrode, and wherein at least one of the at least two conductors is connected to the second electrode; and
a proximal connector connected to the lead body and coupled to the first and second electrodes via the respective conductors. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification