Multi-electrode peripheral nerve evaluation lead and related system and method of use

Patent metadata

Field	Value
Publication number	US-9907476-B2
Application number	US-201414543735-A
Country	US
Kind code	B2
Filing date	Nov 17, 2014
Priority date	Apr 28, 2006
Publication date	Mar 6, 2018
Grant date	Mar 6, 2018

Abstract

A system for applying an electrical stimulation includes a lead and a stylet slidably disposed within a lumen of the lead body and extending proximally therefrom. The lead includes a plurality of insulated conductor wires electrically isolated from one another and each having a distal segment terminating at distal end, an intermediate segment, and a proximal segment terminating at a proximal end, wherein the distal ends are electrically coupled to a respective one of the stimulating electrodes and the intermediate segments extend proximal the lead body and are characterized as having a non-coiled configuration.

First claim

What is claimed is:

1. A system for applying an electrical stimulation energy to bodily tissue of a patient from a power source located external the patient, the system comprising:
a lead defined by a distal section, an intermediate section, and a proximal section, the lead including:
a lead body at the distal section and including a plurality of stimulating electrodes arranged in an electrode array, and at least one anchoring device,
a plurality of wire lead conductors wound to define a lumen of the lead body and each wire lead conductor being electrically coupled to a respective one of the stimulating electrodes; and
a plurality of insulated conductor wires electrically isolated from one another and each having an intermediate segment and a proximal segment terminating at a proximal end, wherein each of the insulated conductor wires is electrically coupled to a respective one of the wire lead conductors and the intermediate segments extend proximal the lead body and are characterized as having a non-coiled configuration and wherein individual ones of the plurality of insulated wires are not exteriorly enclosed along the intermediate segment apart from a component separate from the lead; and

a stylet slidably disposed within the lumen of the lead body and extending proximally therefrom.

2. The system of claim 1 , wherein the stylet defines a distal portion, an intermediate portion, and a proximal portion, the intermediate portion being selectively associated with the intermediate segments of the insulated wires upon final assembly of the distal portion of the stylet within the lead body lumen.

3. The system of claim 2 , wherein the intermediate portion of the stylet is not directly connected to the intermediate segments of the insulated wires.

4. The system of claim 2 , wherein each of the intermediate segments characterized as having the non-coiled configuration does not individually form an internal passage, wherein the intermediate segments of the insulated wires are wrapped about the intermediate portion of the stylet.

5. The system of claim 4 , wherein the intermediate segments of the insulated conductor wires are freely movable upon removal of the stylet.

6. The system of claim 1 , further comprising:
a connector assembly maintaining a connector array electrically coupled to the proximal segments of the plurality of insulated conductor wires and a proximal portion of the stylet.

7. The system of claim 6 , further comprising:
an introducer including a sheath defining a lumen sized to coaxially receive the lead body;
wherein the connector assembly and the introducer assembly are configured to be releasably mounted to one another.

8. The system of claim 1 , wherein the lead body lumen is open at a distal end of the lead body, and further wherein the stylet is a directional guide wire having an electrode tip that is distally extendible through the lead body lumen.

9. The system of claim 8 , wherein the electrode tip is a needle tip.

10. The system of claim 1 , wherein the lead includes at least two of the stimulating electrodes and a corresponding number of the insulated wires.

11. The system of claim 1 , further comprising a tubular sheath further defining the lumen of the lead body.

12. The system of claim 1 , wherein the plurality of wire lead conductors integrally define distal segments of the plurality of insulated wire conductors.

13. The system of claim 1 , wherein the intermediate segments of the insulated conductor wires are freely movable relative to one another.

14. A system for applying an electrical stimulation energy to bodily tissue of a patient from a power source located external the patient, the system comprising:
a lead defined by a distal section, an intermediate section, and a proximal section, the lead including:
a lead body at the distal section and including a plurality of stimulating electrodes arranged in an electrode array, and at least one anchoring device,
a plurality of wire lead conductors wound to define a lumen of the lead body and each wire lead conductor being electrically coupled to a respective one of the stimulating electrodes; and
a plurality of insulated conductor wires electrically isolated from one another and each having an intermediate segment and a proximal segment terminating at a proximal end, wherein each of the insulated conductor wires is electrically coupled to a respective one of the wire lead conductors and the intermediate segments extend proximal the lead body and are characterized as having a non-coiled configuration and do not individually form an internal passage; and

a stylet slidably disposed within the lumen of the lead body and extending proximally therefrom and wherein the stylet defines a distal portion, an intermediate portion, and a proximal portion, the intermediate portion being selectively associated with the intermediate segments of the insulated wires upon final assembly of the distal portion of the stylet within the lead body lumen, and
wherein the intermediate segments of the insulated wires are wrapped about the intermediate portion of the stylet and are freely movable upon removal of the sylet.

Assignees

• Medtronic Inc
• Medtronic Inc

Inventors

• Bonde Eric H
• Stetz Eric M
• Tronnes Carole A
• Henry James T

Classifications

• A61N1/0551 Primary

  Spinal or peripheral nerve electrodes · CPC title

• A61N1/0558

  Anchoring or fixation means therefor · CPC title

• A61B5/04001 Primary

  Human Necessities · mapped topic

• A61B5/6848

  Needles · CPC title