EP0057877B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Implantable medical lead
Assignee: Medtronic Inc
•
Filing: 1982-02-01
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Granted: 1985-07-10
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Expires: 2002-02-01
Abstract
No abstract record available.
Inventors
- 👤 David F. Juncker
- 👤 Terrell M. Williams
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 05:18
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/056; A61N1/0565
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
84 words
An implantable lead comprising a conductive polymer gel electrode (15) contacted over a relatively large part of its surface by a metal contact electrode (13) and having a relatively small part (15a) of its surface area exposed for contacting body tissue, the metal contact electrode (13) and the polymer gel electrode (15), except for the tissue-contacting surface thereof, being enclosed against contact with tissue and body fluids by an insulating sheath (12), and an electrical conductor (11) connected to the metal contact electrode (13).
Claim 2
Dependent Claim
84 words
An implantable lead comprising a conductive polymer gel electrode (15) contacted over a relatively large part of its surface by a metal contact electrode (13) and having a relatively small part (15a) of its surface area exposed for contacting body tissue, the metal contact electrode (13) and the polymer gel electrode (15), except for the tissue-contacting surface thereof, being enclosed against contact with tissue and body fluids by an insulating sheath (12), and an electrical conductor (11) connected to the metal contact electrode (13).
Claim 3
Dependent Claim
25 words
The lead of claim 1 comprising a metal sleeve (14) providing for electrical communication between said metal contact electrode (13) and said electrical conductor (11).
Claim 4
Dependent Claim
16 words
The lead of claim 1 or 2 wherein said lead is of the tined transvenous type.
Claim 5
Dependent Claim
57 words
The lead of any of the preceding claims wherein said metal contact electrode (13) defines a cavity having an opening at the distal end thereof, and wherein said polymer gel electrode (15) is contained in said cavity with a relatively small portion thereof extending through the cavity opening for providing said exposed tissue contacting surface part (15a).
Claim 6
Dependent Claim
26 words
The lead of any of the preceding claims wherein the exposed tissue contacting surface part (15a) of the polymer gel electrode (15) defines a rounded configuration.
Claim 7
Dependent Claim
27 words
The lead of any of claims 1 to 4 wherein the exposed tissue contacting surface part (15a) of the polymer gel electrode (15) defines a flat configuration.
Claim 8
Dependent Claim
17 words
The lead of any of the preceding claims wherein the polymeric gel consists essentially of a hydrogel.
Claim 9
Dependent Claim
12 words
The lead of claim 7 wherein the hydrogel includes a crosslinked polymer.
Claim 10
Dependent Claim
13 words
The lead of claim 7 or 8 wherein the hydrogel includes a copolymer.
Claim 11
Dependent Claim
15 words
The lead of any of claims 7 to 9 wherein the hydrogel includes an acrylamide.
Claim 12
Dependent Claim
16 words
The lead of any of claims 7 to 9 wherein the hydrogel includes a hydroxyethylmethacrylate polymer.
Claim 13
Dependent Claim
15 words
The lead of claim 8 or 9 wherein the hydrogel includes a crosslinked ethylacrylate polymer.
Claim 14
Dependent Claim
23 words
The lead of claim 8 or 9 wherein the hydrogel includes a crosslinked polymer of 2-acrylamido-2-methylpropane sulfonic acid or one of its salts.
Claim 15
Dependent Claim
15 words
The lead of claim 8 or 9 wherein the hydrogel includes a crosslinked vinylpyrrolidone polymer.
Claim 16
Dependent Claim
17 words
The lead of claim 9 wherein the copolymer is comprised of at least two copolymerized hydrogel-forming monomers.
Claim 17
Dependent Claim
22 words
The lead of claim 9 wherein the copolymer is comprised of at least one hydrogel-forming monomer and one non-hydrogel-forming monomer copolymerized together.
Claim 18
Dependent Claim
24 words
The lead of any of the preceding claims wherein the polymeric gel contains relatively large ionic concentration relative to the tissue to be contacted.
References Cited (Backward Citations)
No citation records indexed.
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