Implantable medical lead having reduced dimension tubing transition
First Claim
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1. A medical lead comprising:
- a multilumen tube having a distal end and a proximal end and a wall, the wall defining at least three lumens along a first longitudinal portion of the tube and less than three lumens along a second longitudinal portion of the tube, wherein a first, continuous lumen extends through both the first and second portions, wherein the wall is substantially continuous through both the first and second longitudinal portions;
a proximal connector disposed at the proximal end of the medical lead, the proximal connector adapted to connect the lead to an implantable medical device; and
a distal tip portion;
wherein the second portion of the multilumen tube is connected with the distal tip portion, providing a fluid-tight passageway extending through the first and second portions of the multilumen tube and into the distal tip portion.
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Abstract
Lead body designs for forming a fluid tight seal between a multilumen tube and other portions of a lead body are provided. One lead body design has a multilumen tube having a first portion defining a first number of lumens and a second reduced dimension portion defining a second number of lumens, the second number of lumens being smaller than the first number of lumens. The reduced dimension portion is attached to a distal tip portion of the lead body, forming a fluid tight passageway through the multilumen tube to the distal tip portion. Also provided are methods for forming such multilumen tubes and incorporating such multilumen tubes into a lead body.
154 Citations
20 Claims
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1. A medical lead comprising:
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a multilumen tube having a distal end and a proximal end and a wall, the wall defining at least three lumens along a first longitudinal portion of the tube and less than three lumens along a second longitudinal portion of the tube, wherein a first, continuous lumen extends through both the first and second portions, wherein the wall is substantially continuous through both the first and second longitudinal portions; a proximal connector disposed at the proximal end of the medical lead, the proximal connector adapted to connect the lead to an implantable medical device; and a distal tip portion; wherein the second portion of the multilumen tube is connected with the distal tip portion, providing a fluid-tight passageway extending through the first and second portions of the multilumen tube and into the distal tip portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A medical lead comprising:
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a multilumen tube defining a first number of lumens along a first longitudinal portion of the tube and a second number of lumens along a second longitudinal portion of the tube, wherein the first number of lumens is larger than the second number of lumens, wherein a continuous lumen extends through both the first and second portions and wherein the wall is substantially continuous through both the first and second longitudinal portions; and a distal tip portion; wherein a fluid tight seal is formed between the second portion of the multilumen tube and the distal tip portion, providing a fluid-tight passageway through the first and second portions of the multilumen tube, into the distal tip portion and to the fixation member. - View Dependent Claims (12, 13, 14, 15, 16, 19, 20)
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17. A medical lead comprising:
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a multilumen tube having a distal end and a proximal end and a wall, the wall defining a first number of lumens along a first longitudinal portion of the tube and a second number of lumens along a second longitudinal portion of the tube, wherein a first, continuous lumen extends through both the first and second portions, wherein the wall is substantially continuous through both the first and second longitudinal portions and wherein the first number of lumens is greater than the second number of lumens; a proximal connector disposed at the proximal end of the medical lead, the proximal connector adapted to connect the lead to an implantable medical device; and a distal tip portion, the fixation member at least partially disposed within the distal tip portion; wherein the second portion of the multilumen tube is connected with the distal tip portion, providing a fluid-tight passageway extending through the first and second portions of the multilumen tube and into the distal tip portion. - View Dependent Claims (18)
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Specification