Method of fabricating a medical electrical lead
First Claim
1. A method of fabricating a medical electrical lead, comprising:
- selecting an elongated lead body having a circular cross section, having at least one internal longitudinally extending lumen and fabricated of a compressible, biocompatible plastic;
removing said plastic along at least one longitudinally extending region of said lead body to define a non-circular cross section;
mounting an elongated electrode coil around said lead body to compress said lead body along said longitudinally extending region; and
locating an elongated conductor within said lead body and coupled to said electrode coil.
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Accused Products
Abstract
A method of producing a lead which is isodiametric or nearly so over the region in which an elongated coiled electrode is located and which can optionally be manufactured starting from a single extruded tubular lead body of constant diameter and the lead so produced. Rather than molding the electrode into the surface of the lead or machining the electrode so that it is flush with the surface of the lead, the present invention instead employs an extruded, multiple lumen lead body of circular cross-section which has material cut away or otherwise removed in one or more regions spaced from one another around the lead body and extending longitudinally along the region of the lead body where the coil electrode is to be located or a lead body which is so molded. The areas in which material is removed or is absent are preferably located in regions where the lead body wall is thickest, for example between adjacent lumens. The removal of material may result in one or more elongated, generally planar surfaces spaced from one another around the circumference of the lead body or may result in elongated indentations spaced from one another around the circumference of the lead body. The removal or absence of material renders the lead body more compressible in the region the electrode is to be located.
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Citations
12 Claims
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1. A method of fabricating a medical electrical lead, comprising:
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selecting an elongated lead body having a circular cross section, having at least one internal longitudinally extending lumen and fabricated of a compressible, biocompatible plastic; removing said plastic along at least one longitudinally extending region of said lead body to define a non-circular cross section; mounting an elongated electrode coil around said lead body to compress said lead body along said longitudinally extending region; and locating an elongated conductor within said lead body and coupled to said electrode coil. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of fabricating a medical electrical lead, comprising:
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selecting an elongated lead body having a circular cross section, having at least one internal longitudinally extending lumen and fabricated of a compressible, biocompatible plastic and having a longitudinally extending indentation relative to said circular cross section along at least one longitudinally extending region to define a non-circular cross section; mounting an elongated electrode coil around said lead body to compress said lead body along said longitudinally extending region; and locating an elongated conductor within said lead body and coupled to said electrode coil. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification