Biasing and fixation features on leads
First Claim
1. A lead assembly configured for placement in a coronary vessel of a heart, the coronary vessel having a pericardial wall portion and a myocardial wall portion, the lead assembly comprising:
- a lead body extending from a proximal end adapted for coupling to a pulse generator to a distal end adapted for implantation in the heart;
a pace/sense electrode positioned on an outer surface of the lead body, the pace/sense electrode including a first portion on a first side of the lead body; and
a loop biasing feature located along the lead body, the loop biasing feature including a resilient loop disposed on, and running in a longitudinal direction along, a second side of the lead body, the resilient loop having a first collapsed configuration, a second expanded configuration, a proximal end, a distal end, a collar for coupling the loop biasing feature to the lead body and a necked down region providing a predefined break location disposed adjacent the distal end of the resilient loop, wherein the resilient loop in the second expanded configuration forms a loop spaced from the second side of the lead body, the resilient loop in the second configuration adapted to push the second side of the lead body away from the pericardial wall and push the first side of the lead body toward the myocardial wall;
wherein the lead body includes a groove for accommodating the collar.
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Accused Products
Abstract
A lead assembly for placement in a coronary vessel of the heart, the coronary vessel having a pericardial wall portion and a myocardial wall portion. The lead assembly comprises a lead body extending from a proximal end adapted for coupling to a pulse generator to a distal end adapted for implantation in the heart, an electrode positioned at the distal end of the lead body, and a loop biasing feature located at the distal end of the lead body. The loop biasing feature includes a resilient loop positioned to bias a portion of the electrode towards the myocardial wall portion of the coronary vessel by exerting a force against the pericardial wall portion. The loop biasing feature further includes a collar for coupling the loop biasing feature to the lead body. A method of implanting the lead assembly.
15 Citations
12 Claims
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1. A lead assembly configured for placement in a coronary vessel of a heart, the coronary vessel having a pericardial wall portion and a myocardial wall portion, the lead assembly comprising:
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a lead body extending from a proximal end adapted for coupling to a pulse generator to a distal end adapted for implantation in the heart; a pace/sense electrode positioned on an outer surface of the lead body, the pace/sense electrode including a first portion on a first side of the lead body; and a loop biasing feature located along the lead body, the loop biasing feature including a resilient loop disposed on, and running in a longitudinal direction along, a second side of the lead body, the resilient loop having a first collapsed configuration, a second expanded configuration, a proximal end, a distal end, a collar for coupling the loop biasing feature to the lead body and a necked down region providing a predefined break location disposed adjacent the distal end of the resilient loop, wherein the resilient loop in the second expanded configuration forms a loop spaced from the second side of the lead body, the resilient loop in the second configuration adapted to push the second side of the lead body away from the pericardial wall and push the first side of the lead body toward the myocardial wall; wherein the lead body includes a groove for accommodating the collar. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A lead assembly for placement in a coronary vessel of the heart, the coronary vessel having a pericardial wall portion and a myocardial wall portion, the lead assembly comprising:
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a lead body extending from a proximal end adapted for coupling to a pulse generator to a distal end adapted for implantation in the heart, the lead body including a lumen extending from the proximal end to the distal end; a pace/sense electrode positioned at the distal end of the lead body; a loop biasing feature located at the distal end of the lead body, the loop biasing feature including a resilient loop positioned to bias a portion of the pace/sense electrode towards the myocardial wall, the loop biasing feature further including a necked down region providing a predefined break location; and a cord coupled to the resilient loop and extending to the proximal end of the lead body, wherein a tensile force applied to the cord causes the resilient loop to flatten towards the lead body and a portion of the loop to slide into the lumen. - View Dependent Claims (9, 10, 11, 12)
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Specification