ELECTRICAL LEAD

• US 20100030308A1
• Filed: 10/13/2009
• Published: 02/04/2010
• Est. Priority Date: 10/20/2000
• Status: Active Grant

• Current Assignee: Cathrx Ltd
• Original Assignee: Cathrx Ltd
• Inventors: ANDERSON, Neil Lawrence, CHONG, Evan Ka-Loke
• Granted Patent: US 8,075,969 B2
• Time in Patent Office: Days
• US Class Current: 607/115
• CPC Class Codes: A61B 2562/125 characterised by the manufacture of electrodes
• CPC Class Codes: A61B 5/25 Bioelectric electrodes therefor
• CPC Class Codes: A61B 5/283 Invasive
• CPC Class Codes: A61B 5/291 for electroencephalography [EEG]
• CPC Class Codes: A61N 1/05 for implantation or insertion into the body, e.g. heart electrode A61N1/06 takes precedence
• CPC Class Codes: Y10T 29/49117 Conductor or circuit manufacturing
• CPC Class Codes: Y10T 29/49224 with coating
• CPC Class Codes: Y10T 428/13 Hollow or container type article [e.g., tube, vase, etc.]
• CPC Class Codes: Y10T 428/1303 Paper containing [e.g., paperboard, cardboard, fiberboard, etc.]
• CPC Class Codes: Y10T 428/1334 Nonself-supporting tubular film or bag [e.g., pouch, envelope, packet, etc.]
• CPC Class Codes: Y10T 428/1338 Elemental metal containing
• CPC Class Codes: Y10T 428/1352 Polymer or resin containing [i.e., natural or synthetic]
• CPC Class Codes: Y10T 428/139 Open-ended, self-supporting conduit, cylinder, or tube-type article

Abstract

An electrically conductive member (10) includes an elongate body (11) which has at least one electrically conductive region (20). The electrically conductive region (20) comprises a porous polymeric material coated with an electrically conductive material. A method of manufacturing the electrically conductive member (10) includes the steps of extruding an elongate body of polymeric material wherein at least one region of the elongate body is porous in nature; and coating said elongate body with an electrically conductive material such that the electrically conductive material substantially coats the pores of said at least one region.

Claims

1-56. -56. (canceled)

57. An electrical lead which includes

an elongate body of a polymeric material, the body comprising an inner member and an outer member arranged around the inner member;

at least one electrical conductor positioned between the inner member and the outer member so that the outer member overlies the at least one electrical conductor, at least a portion of the at least one electrical conductor not being overlaid by the outer member; and

a coating of an electrically conductive material applied to an outer surface of the elongate body at least in the region of the at least one portion of the at least one electrical conductor not overlaid by the outer member so that the coating coats at least the at least one portion of the at least one electrical conductor to define at least one electrically conductive region on the elongate body.

58. The electrical lead of claim 57 in which the coating also coats a part of the outer member surrounding the at least one portion of the electrical conductor not overlaid by the outer member.

59. The electrical lead of claim 57 in which the elongate body is tubular and wherein the electrical conductor is contained within at least part of a wall of the tubular body.

60. The electrical lead of claim 57 which includes a plurality of electrical conductors wound helically about the inner member.

61. The electrical lead of claim 57 in which the inner member and the outer member are made from a polymeric material selected from the group consisting of polyurethane and polyether block amide (PEBAX).

62. The electrical lead of claim 57 in which the outer layer is transparent so that the at least one conductor is visible through the outer layer.

63. The electrical lead of claim 57 in which the coating comprises a first layer overlain by a second layer of a biocompatible material.

64. The electrical lead of claim 63 in which the first layer is catalysed.

65. The electrical lead of claim 57 in which the coating forms a band electrode extending substantially around a periphery of the elongate body.