Deployable medical lead fixation system and method
First Claim
1. A medical lead assembly, comprising:
- an implantable electrical lead having a lead body with a distal end;
a tip electrode at the distal end of the lead body adapted to be implanted within a heart chamber;
an outer jacket carried by the lead body;
a spring member proximal to the tip electrode; and
a rotating member coupled to the outer jacket and to the spring member;
wherein the spring member is initially wound tightly around the jacket when in a first, non-deployed state for passage of the lead within a patient'"'"'s body and assumes an unwound second, deployed state upon rotation of the rotating member.
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Accused Products
Abstract
An improved medical lead assembly and method of use is provided. The lead assembly includes a lead body, and a spring member positioned adjacent to the lead body. The spring member may be deployed a selectable amount to maintain the lead body in a fixed location within a patient'"'"'s body. The spring member may be an expandable coil, a mesh structure that is similar to a stent, or any other similar device that may be positioned in a low-profile state during a lead implant procedure. After the lead is positioned at a target destination, the spring member may be deployed an amount that is selected based on the characteristics of the surrounding tissue, including vessel size. According to one aspect of the invention, the lead assembly may provide means for facilitating chronic lead extraction.
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Citations
20 Claims
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1. A medical lead assembly, comprising:
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an implantable electrical lead having a lead body with a distal end; a tip electrode at the distal end of the lead body adapted to be implanted within a heart chamber; an outer jacket carried by the lead body; a spring member proximal to the tip electrode; and a rotating member coupled to the outer jacket and to the spring member; wherein the spring member is initially wound tightly around the jacket when in a first, non-deployed state for passage of the lead within a patient'"'"'s body and assumes an unwound second, deployed state upon rotation of the rotating member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification