Steroid eluting stitch-in chronic cardiac lead
First Claim
1. A lead for establishing electrical contact between body tissue and a medical device, said lead having a longitudinal axis, said lead comprising:
- a length of flexible conductor having a distal end and a longitudinal axis, said conductor having an insulative casing;
a member electrically connected to said conductor, said member having an insulative covering, said member being cylindrical and coaxial with said longitudinal axis of said flexible conductor, said member having a chamber, said chamber communicating with an exterior of said insulative covering in a first direction through a port, said port being perpendicular to said longitudinal axis of said lead, a porous conductive material electrically connecting said member to said exterior of said insulative covering in a direction perpendicular to said longitudinal axis of said flexible conductor, said porous conductive material having a first surface area, said member having means for dispensing a drug positioned in said chamber;
a length of suture having a coiled portion connected to said member; and
a needle attached to an end of said suture.
1 Assignment
0 Petitions
Accused Products
Abstract
A chronic myocardial pacing lead for the delivery of stimulation energy to and the sensing of electrical signals from the myocardium of a human heart. In one embodiment the lead is bipolar, having a sleeve electrode implanted into the myocardium and a pad electrode positioned on the epicardium. The lead includes a drug for delivery through the sleeve electrode to the myocardium. The disclosed lead is highly flexible to minimize tissue reaction, this permits the lead to offer relatively low pacing thresholds, high impedance, and excellent sensing in a configuration which is relatively easy to implant.
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Citations
25 Claims
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1. A lead for establishing electrical contact between body tissue and a medical device, said lead having a longitudinal axis, said lead comprising:
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a length of flexible conductor having a distal end and a longitudinal axis, said conductor having an insulative casing; a member electrically connected to said conductor, said member having an insulative covering, said member being cylindrical and coaxial with said longitudinal axis of said flexible conductor, said member having a chamber, said chamber communicating with an exterior of said insulative covering in a first direction through a port, said port being perpendicular to said longitudinal axis of said lead, a porous conductive material electrically connecting said member to said exterior of said insulative covering in a direction perpendicular to said longitudinal axis of said flexible conductor, said porous conductive material having a first surface area, said member having means for dispensing a drug positioned in said chamber; a length of suture having a coiled portion connected to said member; and a needle attached to an end of said suture. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A lead for establishing electrical contact between body tissue and a medical device, said lead having a longitudinal axis, said lead comprising:
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a length of flexible conductor having a distal end and a longitudinal axis, said conductor having an insulative casing; a member electrically connected to said conductor, said member having an insulative covering, said member being cylindrical and coaxial with said longitudinal axis of said flexible conductor, said member electrically communicating with an exterior of said insulative covering in a first direction to said longitudinal axis of said lead; a length of suture having a coiled portion coupled to said member; and a needle attached to an end of said suture. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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16. A lead for establishing electrical contact between body tissue and a medical device, said lead having a longitudinal axis, said lead comprising:
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a length of flexible conductor having a distal end and a longitudinal axis, said conductor having an insulative casing; a member electrically connected to said conductor, said member having an insulative covering, said member being cylindrical and coaxial with said longitudinal axis of said flexible conductor, said member having a chamber, said chamber communicating with an exterior of said insulative covering in a first direction through a port, a porous conductive material electrically connecting said member to said exterior of said insulative covering, said porous conductive material having a first surface area, said member having means for dispensing a drug positioned in said chamber; a length of suture having a coiled portion coupled to said member; and a needle attached to an end of said suture. - View Dependent Claims (17, 18, 19, 20)
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21. A lead for establishing electrical contact between body tissue and a medical device, said lead having a longitudinal axis, said lead comprising:
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a length of flexible conductor having a distal end; a first member connected to said distal end of said flexible conductor, said first member having a proximal end and a distal end, said proximal end of said first member attached to said distal end of said flexible conductor, said first member having a first electrode configured to be affixed to the surface of said body tissue in a first direction perpendicular to said longitudinal axis; a coiled conductor connected to said distal end of said first member; a second member connected to a distal end of said coiled conductor, said second member covered by an insulative covering, said second member having a chamber, said chamber communicating with an exterior of said insulative covering by a port, a porous conductive material electrically connecting said second member to said exterior of said insulative covering in a second direction perpendicular to said longitudinal axis, said second member having means for dispensing a drug positioned in said chamber; a length of suture having a coiled portion coupled to said second member; and a needle attached to an end of said suture. - View Dependent Claims (22, 23, 24, 25)
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Specification