Method and apparatus for diagnosing and treating neural dysfunction

• US 7,853,326 B2
• Filed: 07/10/2009
• Issued: 12/14/2010
• Est. Priority Date: 08/02/2005
• Status: Active Grant

• Current Assignee: NeuroTherm, Inc. (Abbott Laboratories)
• Original Assignee: NeuroTherm, Inc. (Abbott Laboratories)
• Inventors: Rittman, William J. III
• Primary Examiner(s): Manuel; George
• Assistant Examiner(s): Wieland; Robert N
• Application Number:
  US12/501,074
• Publication Number:
  US 20100016926A1
• Time in Patent Office: 522 Days
• Field of Search: 607 2- 7, 600 16- 18, 600508-528, 606/32, 606/34, 606/41, 606/49
• US Class Current: 607/2
• CPC Class Codes: A61B 18/1477 Needle-like probes
• 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 2018/00839 Bioelectrical parameters, e.g. ECG, EEG
• CPC Class Codes: A61B 5/389 Electromyography [EMG]
• CPC Class Codes: A61B 5/395 Details of stimulation, e.g. nerve stimulation to elicit EMG response
• CPC Class Codes: A61B 5/4893 Nerves
• CPC Class Codes: A61N 1/06 for high-frequency therapy
• CPC Class Codes: A61N 1/36021 for treatment of pain
• CPC Class Codes: A61N 1/37247 User interfaces, e.g. input or presentation means
• CPC Class Codes: A61N 5/00 Radiation therapy ultrasound therapy A61N7/00; devices or apparatus applicable to both therapy and diagnosis A61B6/00

Abstract

A method and apparatus for diagnosing and treating neural dysfunction is disclosed. This device has the capability of delivering the therapeutic electrical energy to more than one treatment electrode simultaneously. In another exemplary embodiment, this device can perform EMG testing both before and after the therapeutic energy has been delivered, to assess whether the target nerve was successfully treated. In another embodiment, the device has the capability to record and store sensory stimulation thresholds both before and after treatment is described, which allows the clinician to accurately determine whether the target nerve has been desensitized. Energy control may achieved by simultaneously comparing the tip temperature of each treatment electrode to a set temperature selected by the operator, and regulating the therapeutic energy output to maintain the set temperature. In another embodiment, EMG, stimulation thresholds, and graphs of temperature versus time can be conveniently displayed on a two-dimensional graphics display.

Claims

1. A device for use in delivering therapeutic treatment to a plurality of nerve locations, the device comprising:

a radio frequency energy source having an RF output;

a plurality of electrode outputs operably coupled to the RF output, wherein each of the electrode outputs is separately and individually connectable through an electrical conductor to at least one of a plurality of probes;

a user interface for selecting a user-settable temperature associated with any of the electrode outputs; and

feedback control circuitry to individually regulate energy delivery from the radio frequency energy source to each of the plurality of electrode outputs, so as to simultaneously maintain the user-settable temperature associated with each of the electrode outputs for electrode tips on probes connected to said electrode outputs.

2. The device of claim 1, further comprising a plurality of temperature sensor inputs, each of the plurality of temperature sensor inputs adapted to receive temperature information from at least one temperature sensor incorporated into at least one of the probes.

3. The device of claim 2, wherein the electrode outputs include the temperature sensor inputs.

4. The device of claim 2, further comprising a plurality of temperature displays corresponding to the plurality of temperature sensor inputs.

5. The device of claim 1, wherein the feedback control circuitry comprises a plurality of switches coupled between the RF output and the corresponding plurality of electrode outputs.

6. The device of claim 5, further comprising a plurality of sensor inputs adapted to receive temperature information from a plurality of temperature sensors at a corresponding plurality of electrodes tips.

7. The device of claim 1, wherein the feedback control circuitry comprises a plurality of feedback control circuits, each feedback control circuit corresponding to one of the plurality of electrode outputs.

8. The device of claim 7, further comprising a plurality of sensor inputs adapted to receive temperature information from a plurality of temperature sensors at a corresponding plurality of electrode tips.

9. The device of claim 1, further comprising a plurality of probes, each probe having an input, and one of the electrodes tips, wherein each probe input is coupled to the one of the electrode outputs.

10. The device of claim 9, wherein the probes are at least partially electrically insulated over at least part of a shaft of the probes.

11. The device of claim 9, wherein the plurality of probes are separate and not connected to one another.

12. The device of claim 1, further comprising a plurality of indicators corresponding to the plurality of electrode outputs, to indicate that a probe is receiving energy from the radio frequency energy source.

13. The device of claim 12, wherein the indicators comprise indicator lights.

14. The device of claim 1, further comprising a set temperature display to display the temperature set by the user.

15. The device of claim 14, wherein the user interface comprises a plurality of temperature controls, each temperature control corresponding to one of the plurality of electrode outputs.

16. The device of claim 14, further comprising a plurality of temperature sensor inputs, each of the plurality of temperature sensor inputs adapted to receive temperature information from a temperature sensor incorporated into one of the probes.

17. The device of claim 16 further comprising a plurality of individual electrode temperature displays corresponding to the plurality of temperature sensor inputs.

18. The device of claim 1, further comprising a graphics panel adapted to display at least one of the operating parameters of the device.

19. The device of claim 18, wherein the graphics panel is adapted to display the temperature of a plurality of electrode tips.

20. The device of claim 18, wherein the graphics panel is adapted to display both the temperature of a plurality of electrode tips, and the temperature of a plurality of electrode tips versus time.

21. The device of claim 1, wherein the RF output provides pulsed high frequency energy.

22. The device of claim 1, further comprising a reference electrode to provide a path for return current from two or more probes.

23. A system for use in delivering therapeutic treatment to a plurality of nerve locations, the system comprising:

a radio frequency energy source having an RF output;

a plurality of separate probes which are not connected to one another, each having a temperature sensor and an electrode tip, the temperature sensor arranged in the probes so as to provide information regarding temperature of an electrode tip;

a plurality of electrode outputs coupled to the RF output, wherein each of the electrode outputs is adapted to receive temperature information from and provide radio frequency energy to one of the probes; and

feedback control circuitry to individually regulate energy delivery from the radio frequency energy source to each of the plurality of probes, so as to simultaneously maintain the temperature reported by the temperature sensor of each of the probes.

24. The system of claim 23, further comprising a plurality of temperature displays corresponding to the temperature information received at each of the electrode outputs.

25. The system of claim 23, further comprising a user interface for selecting a user-settable temperature individually associated with any of the electrode outputs.

26. The system of claim 23, wherein the feedback control circuitry comprises a plurality of feedback control circuits each corresponding to one of the plurality of electrode outputs.

27. The system of claim 23, further comprising a reference electrode to provide a path for return current from the plurality of probes.