Coronary venous lead having fixation mechanism
First Claim
1. In a body implantable lead for placement in a predetermined coronary vein, the lead being of a type having a lead body with at least one electrode disposed on the lead body on a distal end portion thereof and an elongated conductor contained within the lead body and electrically connected to the one electrode, the improvement comprising:
- means for temporarily anchoring the distal end portion of the lead body within the selected coronary vein, said anchoring means including a resilient retention structure comprising a plurality of resilient filamentary projections attached at one end to an annular collar disposed about the lead body and adapted to project at a predetermined acute angle to the lead body when not acted upon by an external force, the collar being secured to the lead body by a biodegradable adhesive material.
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Accused Products
Abstract
A body implantable lead for placement in a selected coronary vein includes a resilient retention structure for inhibiting displacement of the lead because of heart beat action, breathing or other body movement. The retention structure includes a plurality of resilient projections that are attached to the lead body and which are adapted to project at a predetermined acute angle to the axis of the lead body when unconstrained. Prior to being routed through the vascular system, the projections can be bonded to the lead body to provide a low profile with a biodegradable adhesive. Following exposure to body fluids, the adhesive dissolves, releasing the projections so that they can engage the walls of the vein in which the lead is disposed.
94 Citations
10 Claims
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1. In a body implantable lead for placement in a predetermined coronary vein, the lead being of a type having a lead body with at least one electrode disposed on the lead body on a distal end portion thereof and an elongated conductor contained within the lead body and electrically connected to the one electrode, the improvement comprising:
means for temporarily anchoring the distal end portion of the lead body within the selected coronary vein, said anchoring means including a resilient retention structure comprising a plurality of resilient filamentary projections attached at one end to an annular collar disposed about the lead body and adapted to project at a predetermined acute angle to the lead body when not acted upon by an external force, the collar being secured to the lead body by a biodegradable adhesive material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
Specification