ELECTROSURGICAL TISSUE TREATMENT METHOD

• US 20080065062A1
• Filed: 11/13/2007
• Published: 03/13/2008
• Est. Priority Date: 03/05/2002
• Status: Active Grant

• Current Assignee: Avanos Medical Sales, LLC (Avanos Medical, Inc.)
• Original Assignee: Baylis Medical Company Inc. (Boston Scientific Corporation)
• Inventors: CHANDRAN, Subashini, GODARA, Neil, CONQUERGOOD, Laura, SHAH, Krishan, LEUNG, Mark
• Granted Patent: US 8,518,036 B2
• Time in Patent Office: Days
• US Class Current: 606/41
• CPC Class Codes: A61B 18/1206 Generators therefor
• CPC Class Codes: A61B 18/148 having a short, rigid shaft for accessing the inner body transcutaneously, e.g. for neurosurgery or arthroscopy
• CPC Class Codes: A61B 18/18 by applying electromagnetic radiation, e.g. microwaves radiation therapy A61N5/00
• CPC Class Codes: A61B 2018/00011 with fluids
• CPC Class Codes: A61B 2018/00023 closed, i.e. without wound contact by the fluid
• CPC Class Codes: A61B 2018/0044 Spinal cord
• CPC Class Codes: A61B 2018/00601 Cutting
• CPC Class Codes: A61B 2018/00702 Power or energy
• CPC Class Codes: A61B 2018/00791 Temperature
• CPC Class Codes: A61B 2018/00875 Resistance or impedance

Abstract

A method of treating spinal tissue of a patient'"'"'s body is disclosed, the method using a system comprising an energy source and first and second internally-cooled probe assemblies, wherein each of the probe assemblies comprises an electrically conductive energy delivery device electrically coupled to the energy source. The method comprises: inserting the energy delivery devices of the first and second internally-cooled probe assemblies into spaced-apart treatment sites for the spinal tissue; delivering energy from the energy source to the spinal tissue through the energy delivery devices to create a lesion within the spinal tissue; delivering a cooling fluid to the energy delivery devices; and controlling the delivery of energy and the delivery of the cooling fluid to the energy delivery devices such that the lesion extends between the energy delivery devices.

Claims

1. A method of treating spinal tissue of a patient'"'"'s body using a system comprising an energy source and first and second internally-cooled probe assemblies, wherein each of the probe assemblies comprises an electrically conductive energy delivery device electrically coupled to the energy source, the method comprising:

inserting the energy delivery devices of the first and second internally-cooled probe assemblies into spaced-apart treatment sites for the spinal tissue;

delivering energy from the energy source to the spinal tissue through the energy delivery devices to create a lesion within the spinal tissue;

delivering a cooling fluid to the energy delivery devices; and

controlling the delivery of energy and the delivery of the cooling fluid to the energy delivery devices such that the lesion extends between the energy delivery devices.

2. The method of claim 1, wherein the energy source is an electrical generator and wherein the step of delivering energy comprises delivering electrical current in a radio frequency range.

3. The method of claim 1, wherein the energy delivery devices are operated in a bipolar mode, whereby delivered energy is preferentially concentrated between the energy delivery devices.

4. The method of claim 1, wherein the spinal tissue is selected from the group consisting of an intervertebral disc, spinal neural tissue and a vertebra or portions thereof.

5. The method of claim 4, wherein the spinal tissue comprises a vertebra and wherein the lesion is created in order to denervate a neural structure within the vertebra.

6. The method of claim 4, wherein the spinal tissue comprises a vertebra and wherein the lesion is created in order to treat a tumor within the vertebra.

7. The method of claim 4, wherein the spinal tissue comprises an intervertebral disc and wherein the energy delivery device of one of the first and second probe assemblies is placed within a nucleus pulposus of the intervertebral disc and wherein the energy delivery device of the other of the first and second probe assemblies is placed within an annulus fibrosus of the intervertebral disc.

8. The method of claim 4, wherein the spinal tissue comprises an intervertebral disc and wherein the energy delivery devices of each of the first and second probe assemblies are located partially within a nucleus pulposus of the intervertebral disc and partially within an annulus fibrosus of the intervertebral disc, such that at least an equal amount of energy is delivered to the nucleus pulposus as to the annulus fibrosus.

9. The method of claim 4, wherein the spinal tissue comprises an intervertebral disc and wherein the energy delivery device of one of the first and second probe assemblies is placed within an anterior portion of the intervertebral disc and wherein the energy delivery device of the other of the first and second probe assemblies is placed within a posterior portion of the intervertebral disc.

10. The method of claim 1, wherein the delivery of energy and the delivery of the cooling fluid are controlled based on a distance between the energy delivery devices.