Implantable electrical cable and method of making

a technology of electrical cables and medical cables, applied in the manufacture of cables/conductors, external electrodes, flexible conductors, etc., can solve the problems of untoward effects on device performance and patient well-being, discomfort for patients, and hostile environment for implanted medical devices and materials

Inactive Publication Date: 2005-01-27
MED EL ELEKTROMEDIZINISCHE GERAETE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The human body is a hostile environment to implanted medical devices and materials, particularly to chronically implanted electrical cables and leads.
Over the years of implantation, the cables and insulation are subjected to cumulative mechanical stresses that can result in degradation of the insulation or fractures of the lead conductors with untoward effects on device performance and patient well-being.
A stiff and inflexible cable would apply a bias force, which would resist movement of the patient, and which would cause discomfort to the patient.

Method used

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  • Implantable electrical cable and method of making
  • Implantable electrical cable and method of making
  • Implantable electrical cable and method of making

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Embodiment Construction

[0030] The following describes the best mode presently contemplated for carrying out the invention. This description is not to be taken in a limiting sense, but is made merely for describing the general principles of the invention. The scope of the invention should be determined with reference to the claims.

[0031]FIG. 1A is a sectional view of a fluoropolymer film 2 used to manufacture an implantable cable according to the present invention. FEP or PFA film 2 is used in the preferred embodiment of the present invention. However, it is possible to use other melt processable biomaterials such as fluorocarbons PVDF, PCTFE, ECTFE, ETFE, MFA (a copolymer of TFE and PVE), polyethylene's and polypropylenes. The thickness of the film 2 is preferably about 20-100 μm.

[0032]FIG. 1B is a sectional view of a fluoropolymer film 2 having grooves 4 to manufacture an implantable cable according to the present invention. A plurality of grooves 4 are established within the FEP film 2 through laser c...

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Abstract

The present invention is an implantable cable and a process to manufacture said implantable cable. The cable is composed of a biocompatible fluoropolymer, in which biocompatible conductor wires are embedded. The entire cable is heat treated at various stages to ensure the wires are securely embedded. The cable is then undulated to enhance its pliability and flexibility. Further treatment activates the outer surface of the cable, following which it may be encapsulated in silicone.

Description

TECHNICAL FIELD OF THE INVENTION [0001] This present invention relates generally to the field of implantable medical cables and conductor wires, particularly to implantable medical cable for use with various implantable electrical devices such as cochlear implants and other neurostimulation and recording applications, and to a method of fabricating such cables. BACKGROUND OF THE INVENTION [0002] The human body is a hostile environment to implanted medical devices and materials, particularly to chronically implanted electrical cables and leads. For example, implantable cardiac cables are typically coupled at their proximal ends with implanted pacemaker and pacemaker / cardioverter / defibrillator pulse generators. Over the years of implantation, the cables and insulation are subjected to cumulative mechanical stresses that can result in degradation of the insulation or fractures of the lead conductors with untoward effects on device performance and patient well-being. [0003] The traditio...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61N1/05H01B7/04H01B13/00
CPCA61N1/05Y10T156/1018H01B13/0013H01B13/0009
Inventor BLUGER, HENRY
Owner MED EL ELEKTROMEDIZINISCHE GERAETE GMBH
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