High impedance drug eluting cardiac lead
First Claim
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1. A high impedance bipolar cardiac lead comprising:
- a) an elongated lead body having opposed proximal and distal ends;
b) a ring electrode operatively associated with the distal end of the lead body and defining an inner peripheral surface;
c) a tip electrode coaxially disposed within the ring electrode and defining an (outer peripheral surface such that an annular gap is formed between the inner peripheral surface of the ring electrode and the outer peripheral surface of the tip electrode;
d) a drug eluting insulating member disposed within the annular gap formed between the outer peripheral surface of the tip electrode and the inner peripheral surface of the ring electrode;
e) a connector operatively associated with the proximal end of the lead body and electrically connected to the ring and tip electrodes; and
f) conductor means extending through the lead body for delivering energy from the connector to the ring and tip electrodes to stimulate cardiac tissue.
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Abstract
A high impedance bipolar cardiac lead is disclosed that includes a lead body with a distal electrode assembly that includes an anodic ring electrode and a coaxially disposed cathodic tip electrode, wherein the anodic ring electrode and the cathodic tip electrode are separated from one another by a drug eluting insulating member.
99 Citations
24 Claims
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1. A high impedance bipolar cardiac lead comprising:
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a) an elongated lead body having opposed proximal and distal ends;
b) a ring electrode operatively associated with the distal end of the lead body and defining an inner peripheral surface;
c) a tip electrode coaxially disposed within the ring electrode and defining an (outer peripheral surface such that an annular gap is formed between the inner peripheral surface of the ring electrode and the outer peripheral surface of the tip electrode;
d) a drug eluting insulating member disposed within the annular gap formed between the outer peripheral surface of the tip electrode and the inner peripheral surface of the ring electrode;
e) a connector operatively associated with the proximal end of the lead body and electrically connected to the ring and tip electrodes; and
f) conductor means extending through the lead body for delivering energy from the connector to the ring and tip electrodes to stimulate cardiac tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A high impedance bipolar cardiac lead, comprising:
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a) an elongated lead body having opposed proximal and distal ends;
b) an anodic ring electrode operatively associated with the distal end of the lead body and defining an inner peripheral surface;
c) a cathodic tip electrode coaxially disposed within the ring electrode and defining an outer peripheral surface such that an annular gap is formed between the inner peripheral surface of the ring electrode and the outer peripheral surface of the tip electrode;
d) a drug eluting insulating member disposed within the annular gap formed between the outer peripheral surface of the cathodic tip electrode and the inner peripheral surface of the anodic ring electrode;
e) a connector operatively associated with the proximal end of the lead body and electrically connected to the ring and tip electrodes; and
f) conductor means extending through the lead to deliver electrical energy from the connector to the ring and tip electrodes to stimulate cardiac tissue. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A high impedance bipolar cardiac lead, comprising:
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a) a lead body having opposed proximal and distal ends; and
b) an electrode assembly operatively associated with the distal end of the lead body and including an anodic ring electrode defining a leading edge and a coaxially disposed cathodic tip electrode defining a leading surface, wherein the anodic ring electrode and the cathodic tip electrode are separated from one another by a drug eluting insulating member having a leading edge, and wherein the leading edges of the ring electrode and insulating member are coincident, and cooperate with the leading surface of the tip electrode to form an atraumatic pacing surface for the lead. - View Dependent Claims (23, 24)
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Specification