EP0057451A1
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EP
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Body implantable cushioned lead
Assignee: Medtronic Inc
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Filing: 1982-02-01
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Granted: —
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Expires: 2002-02-01
Abstract
Abstract Body implantable lead (10) having pressure-cushioned electrode (19).
Inventors
- 👤 David F. Juncker
- 👤 Patrick T. Cahalan
- 👤 Arthur J. Coury
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 14:30
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/056; A61N1/057; A61N1/0565
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
120 words
In a body-implantable lead of the type including a lead body having a distal end and at least one metal electrode means carried by the lead body at the distal end, the electrode means including a contact surface adapted to contact living tissue, the improvement wherein the lead further comprises a trauma-reducing, cushioning body of a soft, compliant, water-swellable, polymeric, water-insoluble material inert to body tissues and fluids, the material consisting essentially of a hydrogel which is ionically conductive, the body being carried and positioned on the metal electrode contact surface of the electrode means so as to be interposed between it and the body tissue to be contacted whereby flexible connection between the electrode and the tissue is established.
Claim 2
Dependent Claim
120 words
In a body-implantable lead of the type including a lead body having a distal end and at least one metal electrode means carried by the lead body at the distal end, the electrode means including a contact surface adapted to contact living tissue, the improvement wherein the lead further comprises a trauma-reducing, cushioning body of a soft, compliant, water-swellable, polymeric, water-insoluble material inert to body tissues and fluids, the material consisting essentially of a hydrogel which is ionically conductive, the body being carried and positioned on the metal electrode contact surface of the electrode means so as to be interposed between it and the body tissue to be contacted whereby flexible connection between the electrode and the tissue is established.
Claim 3
Dependent Claim
28 words
The body-implantable lead of claim 1 wherein the electrode contact surface is at the tip of the lead and the hydrogel cushioning body is carried on the tip.
Claim 4
Dependent Claim
16 words
The body-implantable lead of claim 1 wherein the electrode metal is platinum or an alloy thereof.
Claim 5
Dependent Claim
13 words
The body-implantable lead of claim 1 wherein the hydrogel includes a crosslinked polymer.
Claim 6
Dependent Claim
12 words
The body-implantable lead of claim 1 wherein the hydrogel includes a copolymer.
Claim 7
Dependent Claim
13 words
The body-implantable lead of claim 1 wherein the hydrogel includes an acrylamide polymer.
Claim 8
Dependent Claim
12 words
The body-implantable lead of claim 6 wherein the acrylamide polymer is crosslinked.
Claim 9
Dependent Claim
13 words
The body-implantable lead of claim 1 wherein the hydrogel includes a methylacrylate polymer.
Claim 10
Dependent Claim
14 words
The body-implantable lead of claim 1 wherein the hydrogel includes a crosslinked ethylacrylate polymer.
Claim 11
Dependent Claim
22 words
The body-implantable lead of claim 1 wherein the hydrogel includes a crosslinked polymer of 2-acrylamido-2-methylpropane sulfonic acid or one of its salts.
Claim 12
Dependent Claim
12 words
The body-implantable lead of claim 10 wherein the polymer is a copolymer.
Claim 13
Dependent Claim
14 words
The body-implantable lead of claim 1 wherein the hydrogel includes a crosslinked vinylpyrrolidone polymer.
Claim 14
Dependent Claim
12 words
The body-implantable lead of claim 1 wherein the hydrogel includes a copolymer.
Claim 15
Dependent Claim
18 words
The body-implantable lead of claim 13 wherein the copolymer is comprised of at least two copolymerized hydrogel-forming monomers.
Claim 16
Dependent Claim
24 words
The body-implantable lead of claim 13 wherein the copolymer is comprised of at least one hydrogel-forming monomer and one non-hydrogel-forming monomer which are copolymerized.
Claim 17
Dependent Claim
14 words
The body-implantable lead of claim 1 wherein the lead is of the transvenous type.
Claim 18
Dependent Claim
14 words
The body-implantable lead of claim 1 wherein the lead is of the bipolar type.
References Cited (Backward Citations)
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