Neuro-stimulation and ablation system

• US 7,949,402 B2
• Filed: 12/21/2006
• Issued: 05/24/2011
• Est. Priority Date: 12/27/2005
• Status: Active Grant

• Current Assignee: Neuropoint Medical, Inc.
• Original Assignee: Neuropoint Medical, Inc.
• Inventors: Osypka, Thomas P.
• Primary Examiner(s): Bertram; Eric D
• Assistant Examiner(s): So; Elizabeth K
• Application Number:
  US11/643,462
• Publication Number:
  US 20070219547A1
• Time in Patent Office: 1,615 Days
• Field of Search: 607/2, 607/43, 607/46, 607/52, 607/57, 607/59, 607/115, 607/116, 607/117, 607/118, 128897-899, 606/27, 606/31, 606/41, 606/42
• US Class Current: 607/46
• CPC Class Codes: A61B 18/1492 having a flexible, catheter-like structure, e.g. for heart ablation A61B18/1477 takes precedence
• CPC Class Codes: A61B 2018/0016 Energy applicators arranged in a two- or three dimensional array
• CPC Class Codes: A61B 2018/00434 Neural system
• CPC Class Codes: A61B 2018/00702 Power or energy
• CPC Class Codes: A61B 2018/00791 Temperature
• CPC Class Codes: A61B 2018/1467 using more than two electrodes on a single probe

Abstract

The invention provides a system for treating chronic pain including a lead configured and adapted to be percutaneously implanted into an epidural space of a spinal cord, a stimulation generator that delivers electrical stimulation to the spinal cord through the lead to precisely locate the treatment area, and an ablation generator that delivers ablation energy to the treatment area through the same lead to inhibit the chronic pain. The invention also provides a method for treating chronic pain, including providing a lead, inserting the lead percutaneously into the epidural space, locating the treatment area by probing the epidural space while the lead sends electrical stimulation signals, and then ablating the treatment area.

Claims

1. A method for treating chronic pain comprising:

a. providing an implantable lead having an electrode configured to deliver electrical stimulation and ablation energy to a treatment location of a spinal cord of a patient;

b. inserting the lead percutaneously into an epidural space of the spinal cord of the patient;

c. locating the treatment location on the spinal cord by;

i. sending electrical stimulation through the lead to the electrode; and

ii. probing with the lead in the epidural space until the electrode reaches the treatment location on the patient'"'"'s spinal cord where the patient experiences a physiological reaction from the electrical stimulation indicative of the electrode contacting the treatment location; and

d. delivering ablation energy to the electrode to ablate nerve tissue proximate the treatment location.

2. The method recited in claim 1, wherein the step of delivering ablation energy includes controlling ablation temperature by receiving feedback from a temperature sensor.

3. The method recited in claim 1, wherein the lead has a plurality of electrodes, and wherein the locating step includes cycling through the plurality of electrodes with stimulation signals.

4. The method recited in claim 1, further comprising the step of switching the lead from a stimulation mode, in which electrical stimulation is sent from a stimulation generator to the electrode, to an ablation mode, in which ablation energy is sent from an ablation generator to the electrode.

5. The method recited in claim 4, further comprising the step of controlling the output levels for the stimulation and ablation generators using a processor.