Wire configuration and method of making for an implantable medical apparatus
First Claim
1. An implantable medical apparatus, comprising:
- a conductive wire, the conductive wire comprising;
an MP35N (CoNiCrMo) coil; and
a silver core having a length, the silver core positioned within, and electrically coupled to, the coil;
wherein the MP35N coil is directly adjacent to, and extends substantially the length of, the silver core and wherein turns of the MP35N coil are disposed at an angle of between 0 and 45 degrees relative to an axis that is substantially perpendicular to a longitudinal axis of the silver core.
2 Assignments
0 Petitions
Accused Products
Abstract
A filar includes an inner conductive core that is formed of a low-resistivity material such as silver having a resistivity of less than 20 μΩ per centimeter. A conductive coil is provided around the core to form a filar. This coil is formed of a biocompatible alloy or super alloy having an ultimate tensile strength (UTS) of between 150 kilo pounds per square inch (ksi) and 280 ksi at room temperature. Examples of such alloys include CoCrMo, CoFeCrMo, and CoFeNiCrMo. In one specific embodiment, the alloy is MP35N (CoNiCrMo), which may be low-titanium (“low-ti”) MP35N. One or more such filars may be included within a wire. This wire may be carried by an implantable medical apparatus such as a lead, lead extension, or catheter. The wire may electrically couple elements such as connector electrodes to conducting electrodes or sensors.
87 Citations
33 Claims
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1. An implantable medical apparatus, comprising:
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a conductive wire, the conductive wire comprising; an MP35N (CoNiCrMo) coil; and a silver core having a length, the silver core positioned within, and electrically coupled to, the coil; wherein the MP35N coil is directly adjacent to, and extends substantially the length of, the silver core and wherein turns of the MP35N coil are disposed at an angle of between 0 and 45 degrees relative to an axis that is substantially perpendicular to a longitudinal axis of the silver core. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An implantable medical apparatus carrying two elements, each of the elements being capable of at least one of receiving, transmitting, and conducting an electrical signal, the apparatus comprising:
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a conductive wire, the conductive wire comprising; a silver core having a length, the silver core extending between, and electrically coupling, the two elements; and an MP35N (CoNiCrMo) coil directly adjacent to, and wound around substantially the length of, and electrically coupled to, the silver core, wherein turns of the MP35N coil are disposed at an angle of between 0 and 45 degrees relative to an axis that is substantially perpendicular to a longitudinal axis of the silver core. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An implantable medical apparatus carrying a conducting electrode and a connector electrode, comprising:
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a body of the apparatus; and a conductive wire carried by the body and electrically coupling the conducting electrode and the connector electrode, the conductive wire comprising; a silver core having a length; and an MP35N (CoNiCrMo) coil positioned directly adjacent to, and around substantially the length of, and electrically coupled to, the silver core, wherein turns of the coil are disposed at an angle of between 0 and 45 degrees relative to an axis that is substantially perpendicular to a longitudinal axis of the silver core. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A method of manufacturing a implantable medical apparatus, comprising:
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obtaining a silver core having a length; winding an MP35N (CoNiCrMo) filament directly adjacent to and around substantially the length of the silver core to form a coil that is electrically coupled to the silver core, wherein the coil and the silver core comprise a conductive wire and wherein turns of the coil are disposed at an angle of between 0 and 45 degrees relative to an axis that is substantially perpendicular to a longitudinal axis of the silver core; and including the wire within a body of the implantable medical apparatus. - View Dependent Claims (28, 29, 30, 31, 32, 33)
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Specification