Devices and methods for treatment of luminal tissue

• US 9,393,069 B2
• Filed: 05/03/2012
• Issued: 07/19/2016
• 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:
  US13/463,683
• Publication Number:
  US 20120220996A1
• Time in Patent Office: 1,538 Days
• US Class Current: 1/1
• 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 electrode deployment apparatus for treatment of tissue in a body lumen, the apparatus comprising:

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

an expansion member coupled to the support, wherein the support is furled at least partially around the expansion member in an overlapping manner such that the support unfurls as the expansion member expands to deploy and selectively expose a portion of the electrode surface while shielding a remaining portion and maintaining the electrode density.

2. The electrode deployment apparatus of claim 1, wherein the expansion member is coupled with the support at a midpoint of the support, and first and second ends of the support are unattached and furled in opposite directions around the expansion member.

3. The electrode deployment apparatus of claim 1, wherein the expansion member comprises a spring.

4. The electrode deployment apparatus of claim 3, wherein the spring comprises a spring material comprising at least 316 stainless steel or nitinol.

5. The electrode deployment apparatus of claim 3, wherein the support is attached to an outside surface of the spring.

6. The electrode deployment apparatus of claim 1, wherein the expansion member comprises a balloon.

7. The electrode deployment apparatus of claim 1, wherein the expansion member comprises one of a compliant balloon, a balloon with a tapered geometry, a basket, a plurality of struts, a foam, a bladder, or a backing material configured to expand to an expanded configuration when unrestrained.

8. The electrode deployment apparatus of claim 1, further comprising:

a spring coupled with the support, wherein the spring is configured to provide at least a retraction or a constant force with respect to the support.

9. The electrode deployment apparatus of claim 1, wherein the expansion member is coupled with the support at a first end of the support and a second end of the support is unattached and furled around the expansion member to overlap the first end.

10. The electrode deployment apparatus of claim 2, further comprising a second support that is attached at its midpoint to a point on the expansion member approximately opposite the midpoint of the first support, the two ends of the second support overlapping the ends of the first support as they are furled around the expansion member.