METHOD FOR MANUFACTURING AN ACTIVE FIXATION ELECTRODE
First Claim
1. Method of fabricating an electrically active helix for an electrical medical lead comprising the steps of:
- a) forming an elongated helix body precursor having a proximal end and a distal end, said helix body precursor comprising at least one electrically conducting core partially surrounded by an insulating sheath whereby a portion of the surface of each electrically conducting core between said distal end and said proximal end is exposed; and
,b) forming said helix body precursor into a helix body in which a plurality of helical revolutions are formed between said proximal end and said distal end of said helix body precursor, and wherein each exposed surface of each electrically conducting core faces in a predetermined direction.
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Accused Products
Abstract
In a method for manufacturing active fixation helices for the stimulation and/or sensing of organs, an elongated helix precursor body is produced that has one or more electrical conductors surrounded by an insulating material. This helix precursor body is then shaped into a helix, material removed in predetermined places in order to expose the areas of the conductors which will be used as electrodes in the final product. The body is coated with an electrically conducting biocompatible coating which is subsequently partly removed in continuous loops from around the electrodes in order to electrically insulate them from each other and to ensure that the electrically active areas of the electrodes are of the correct dimensions.
7 Citations
11 Claims
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1. Method of fabricating an electrically active helix for an electrical medical lead comprising the steps of:
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a) forming an elongated helix body precursor having a proximal end and a distal end, said helix body precursor comprising at least one electrically conducting core partially surrounded by an insulating sheath whereby a portion of the surface of each electrically conducting core between said distal end and said proximal end is exposed; and
,b) forming said helix body precursor into a helix body in which a plurality of helical revolutions are formed between said proximal end and said distal end of said helix body precursor, and wherein each exposed surface of each electrically conducting core faces in a predetermined direction. - View Dependent Claims (2, 3, 4, 5, 11)
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6. Method of fabricating an electrically active helix for an electrical medical lead comprising the steps of:
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a) forming a helix body having a proximal end and a distal end connected by a plurality of helical revolutions, said body comprising at least one electrically conducting core partially surrounded by an insulating sheath whereby a portion of the surface of each electrically conducting core extending from said distal end towards said proximal end and facing in a predetermined direction is exposed; b) applying a continuous electrically conducting, biocompatible coating to surface of said insulating sheath and each exposed surface of each electrically conducting core; c) removing a portion of said electrically conducting biocompatible coating on the insulating sheath surrounding each continuous portion of the surface of each electrically conducting core such that the electrically conducting coating on the exposed surface of each electrically conducting core is not in electrical contact with the remaining electrically conducting coating on said insulating sheath. - View Dependent Claims (7, 8, 9, 10)
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Specification