Devices and methods for treatment of luminal tissue

• US 7,150,745 B2
• Filed: 01/09/2004
• Issued: 12/19/2006
• Est. Priority Date: 01/09/2004
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: BARRX Medical LLC
• Inventors: Jackson, Jerome, Stern, Roger A., Hodor, Jennifer A., Smith, George H., Corbitt, Roy D., Sullivan, Vincent N., Shellengberger, Carson J.
• Primary Examiner(s): Peffley, Michael
• Assistant Examiner(s): TOY, ALEX B
• Application Number:
  US10/754,444
• Publication Number:
  US 20050171524A1
• Time in Patent Office: 1,075 Days
• Field of Search: 606/41, 606 48- 50
• US Class Current: 606/41
• 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 suach 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;

an expansion member comprising an elastically inflatable balloon coupled to the support, wherein the support is furled at least partially around the balloon in an overlapping manner, so that the support unfurls as the balloon is inflated to deploy and selectively expose a portion of the electrode surface while shielding a remaining portion and maintaining the electrode density; and

an elastic member coupled to the support to retain the support in contact with the balloon.

2. 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;

an expansion member comprising an inflatable balloon coupled to the support to deploy and selectively expose a portion of the electrode surface while shielding a remaining portion and maintaining the electrode density; and

a shaft and a sheath, wherein the support is attached at one end to a distal end of the shaft and spirally furled about the shaft, wherein the balloon is slidably received on the shaft proximal to the support, wherein the balloon and support are retained in the sheath so that they may be advanced past the sheath once the apparatus is positioned at a treatment area, and wherein the balloon is further advanced to the distal end of the shaft to expand the support.