Devices and methods for treatment of luminal tissue

• US 10,278,776 B2
• Filed: 06/20/2016
• Issued: 05/07/2019
• Est. Priority Date: 01/09/2004
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Stern, Roger A., Jackson, Jerome, Sullivan, Vincent N., Smith, George H., Corbitt, Roy D., Hodor, Jennifer A., Shellengberger, Carson J.
• Primary Examiner(s): Peffley, Michael F
• Application Number:
  US15/186,809
• Publication Number:
  US 20160354145A1
• Time in Patent Office: 1,051 Days
• CPC Class Codes: A61B 18/06 caused by chemical reaction , e.g. moxaburners
• CPC Class Codes: A61B 18/08 by means of electrically-heated probes
• CPC Class Codes: A61B 18/1206 Generators therefor
• 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 18/18 by applying electromagnetic radiation, e.g. microwaves radiation therapy A61N5/00
• CPC Class Codes: A61B 18/20 using laser
• CPC Class Codes: A61B 2018/00011 with fluids
• CPC Class Codes: A61B 2018/00214 Expandable means emitting energy, e.g. by elements carried thereon
• CPC Class Codes: A61B 2018/0022 Balloons
• CPC Class Codes: A61B 2018/00488 Esophagus
• CPC Class Codes: A61B 2018/00494 Stomach, intestines or bowel
• CPC Class Codes: A61B 2018/00577 Ablation
• CPC Class Codes: A61B 2018/0066 without feedback, i.e. open loop control
• CPC Class Codes: A61B 2018/00702 Power or energy
• CPC Class Codes: A61B 2018/00761 Duration
• CPC Class Codes: A61B 2018/00791 Temperature
• CPC Class Codes: A61B 2018/00982 combined with or comprising means for visual or photographic inspections inside the body, e.g. endoscopes
• CPC Class Codes: A61B 2018/046 in liquid form
• CPC Class Codes: A61B 2018/1807 using light other than laser radiation

Abstract

Devices and methods are provided for treatment of tissue in a body lumen with an electrode deployment device. Embodiments typically include a device with a plurality of electrodes having a pre-selected electrode density arranged on the surface of a support. The support may comprise a non-distensible electrode backing that is spirally furled about an axis and coupled to an expansion member such as an inflatable elastic balloon. In some embodiments, the balloon is inflated to selectively expose a portion of the electrode surface while maintaining the electrode density.

Claims

1. An apparatus for treating tissue in a body lumen, the apparatus comprising:

an expansion member;

a dimensionally stable support furled around the expansion member; and

a plurality of electrodes arranged on a surface of the dimensionally stable support at a pre-selected electrode density;

wherein, as the expansion member expands, the dimensionally stable support unfurls to expose at least a portion of a plurality of electrodes that was covered by an overlapping portion of the dimensionally stable support.

2. The apparatus of claim 1, wherein the dimensionally stable support comprises a first end and a second end opposite the first end, and wherein the first end is attached to the expansion member and the second end is unattached and overlaps the first end.

3. The apparatus of claim 1, wherein the dimensionally stable support is non-distensible.

4. The apparatus of claim 1, wherein the plurality of electrodes comprise a plurality of bipolar electrode pairs.

5. The apparatus of claim 1, wherein the plurality of electrodes are arranged transverse to a longitudinal axis of the expansion member.

6. The apparatus of claim 1, wherein the plurality of electrodes are arranged into a plurality of electrode segments.

7. The apparatus of claim 6, wherein the plurality of electrode segments are separately controllable.

8. The apparatus of claim 1, wherein the plurality of electrodes extend continuously from a first end of the dimensionally stable support to a second end opposite the first end.

9. The apparatus of claim 1, wherein the plurality of electrodes are configured to deliver radio frequency (RF) energy.

10. The apparatus of claim 1, further comprising an elastic member coupled to the dimensionally stable support and configured to urge the support to remain furled around the expansion member.

11. The apparatus of claim 1, wherein the expansion member comprises a balloon.

12. The apparatus of claim 11, wherein the balloon is tapered at both a proximal end and a distal end.

13. The apparatus of claim 1, further comprising a catheter coupled with the expansion member at a distal end of the catheter.

14. The apparatus of claim 13, wherein a portion of the catheter extends through the expansion member and beyond a distal end of the expansion member.

15. The apparatus of claim 13, wherein the catheter comprises an inflation lumen.

16. A system for treating tissue in a body lumen, the system comprising:

a balloon;

a dimensionally stable support furled around the balloon;

a plurality of electrodes arranged on a surface of the dimensionally stable support at a pre-selected electrode density;

a power source in electrical communication with the plurality of electrodes;

an inflation source in fluid communication with the balloon; and

wherein, as the inflation source inflates the balloon, the dimensionally stable support unfurls to expose at least a portion of a plurality of electrodes that was covered by an overlapping portion of the dimensionally stable support.

17. The system of claim 16, wherein the plurality of electrodes are arranged into a plurality of electrode segments.

18. The system of claim 17, wherein the power source is configured to deliver energy separately to the plurality of electrode segments.

19. The system of claim 16, wherein the power source is configured to deliver an energy density ranging from 1 J/cm² to 50 J/cm².

20. The system of claim 16, wherein the inflation source is configured to inflate the balloon until a target pressure measured within the balloon is reached.