Lead body with inner and outer co-axial coils
First Claim
1. A biomedical conductor assembly adapted for at least partial insertion in a living body, the conductor assembly comprising:
- a plurality of first electrical conductors, each first electrical conductor being covered with an insulator;
a plurality of second electrical conductors, at least one of the plurality of second electrical conductors including a plurality of un-insulated wires twisted in a ropelike configuration around a central axis to form a cable, each cable being covered with an insulator, the un-insulated wires being movable with respect to each other within the insulator, wherein the plurality of the first electrical conductors are helically wound in a first direction to form an inner coil with a lumen, and the plurality of the second electrical conductors are helically wound in a second opposite direction to form an outer coil around an outside of the inner coil and in direct physical contact with the inner coil, wherein the inner coil is substantially concentric with the outer coil; and
an insulator covering the inner and outer coils.
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Accused Products
Abstract
A biomedical conductor assembly adapted for at least partial insertion in a living body. The conductor assembly includes a plurality of the first electrical conductors each covered with an insulator and helically wound in a first direction to form an inner coil with a lumen. A plurality of second electrical conductors each including a plurality of un-insulated wires twisted in a ropelike configuration around a central axis to form a plurality of cables. Each cable is covered with an insulator and helically wound in a second opposite direction forming an outer coil in direct physical contact with the inner coil. The inner and outer coils are covered by an insulator. A method of making the conductor assembly and implanting a neurostimulation system is also disclosed.
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Citations
20 Claims
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1. A biomedical conductor assembly adapted for at least partial insertion in a living body, the conductor assembly comprising:
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a plurality of first electrical conductors, each first electrical conductor being covered with an insulator; a plurality of second electrical conductors, at least one of the plurality of second electrical conductors including a plurality of un-insulated wires twisted in a ropelike configuration around a central axis to form a cable, each cable being covered with an insulator, the un-insulated wires being movable with respect to each other within the insulator, wherein the plurality of the first electrical conductors are helically wound in a first direction to form an inner coil with a lumen, and the plurality of the second electrical conductors are helically wound in a second opposite direction to form an outer coil around an outside of the inner coil and in direct physical contact with the inner coil, wherein the inner coil is substantially concentric with the outer coil; and an insulator covering the inner and outer coils. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A biomedical conductor assembly adapted for at least partial insertion in a living body, the conductor assembly comprising:
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a plurality of first electrical conductors that are each covered with an insulator and are helically wound in a first direction to form an inner coil with a lumen; a plurality of second electrical conductors that are helically wound in a second opposite direction forming an outer coil around an outside of the inner coil and in direct physical contact with the inner coil, each of the second electrical conductors including a plurality of un-insulated wires twisted in a ropelike configuration around a central axis and covered with an insulator, wherein the inner coil is substantially concentric with the outer coil; and an insulator covering the inner and outer coils.
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10. A therapy delivery element comprising:
an elongated lead body including a proximal end and a distal end, the lead body including; a plurality of first electrical conductors, each of the plurality of first electrical conductors being covered with an insulator and helically wound in a first direction to form an inner coil with a lumen; a plurality of second electrical conductors, each of the plurality of second electrical conductors including a plurality of un-insulated wires twisted in a ropelike configuration around a central axis to form a plurality of cables, each cable being covered with an insulator and helically wound in a second opposite direction to form an outer coil around an outside of the inner coil and in direct physical contact with the inner coil, wherein the inner coil is substantially concentric with the outer coil; and an insulator covering the inner and outer coils. - View Dependent Claims (11, 20)
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12. A neurostimulation system comprising:
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an implantable pulse generator; and a therapy delivery element including; an elongated lead body including a proximal end and a distal end, the distal end including at least one electrode, the lead body including; a plurality of first electrical conductors, each of the plurality of first electrical conductors being covered with an insulator and helically wound in a first direction to form an inner coil with a lumen; a plurality of second electrical conductors, each of the plurality of second electrical conductors including a plurality of un-insulated wires twisted in a ropelike configuration around a central axis to form a plurality of cables, each cable being covered with an insulator and helically wound in a second opposite direction to form an outer coil around an outside of the inner coil and in direct physical contact with the inner coil, wherein the inner coil is substantially concentric with the outer coil; and an insulator covering the inner and outer coils; an electrically conductive connector operatively associated with the proximal end of the lead body, wherein the connector and the at least one electrode are electrically coupled with one of the plurality of first electrical conductors or the plurality of second electrical conductors, wherein the connector is configured to electrically couple with the implantable pulse generator; and a stylet wire including; a distal end configured to be inserted into the lumen of the inner coil through an opening at the proximal end of the lead body; and a proximal end attached to a stylet handle.
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13. A method of making a therapy delivery element adapted for at least partial insertion in a living body, the method comprising:
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helically winding a plurality of first electrical conductors in a first direction to form an inner coil with a lumen, each of the plurality of first electrical conductors being covered with an insulator; helically winding a plurality of second electrical conductors in a second opposite direction to form an outer coil around an outside of the inner coil and in direct physical contact with the inner coil, each of the second electrical conductors including a plurality of un-insulated wires twisted in a ropelike configuration around a central axis to form a plurality of cables, each cable being covered with an insulator, wherein the inner coil is substantially concentric with the outer coil; applying an insulator covering to the inner and outer coils to form a lead body; attaching at least one electrically conductive connector to a proximal end of the lead body; and attaching at least one electrode to a distal end of the lead body, wherein the at least one electrode and the at least one connector are electrically coupled with one of the plurality of first electrical conductors or the plurality of second electrical conductors. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification