Nancy T Nguyen

US Patent:

20140276791, Sep 18, 2014

Filed:

Mar 13, 2014

Appl. No.:

14/208590

Inventors:

- Luxembourg, LU
Joan A. Simon - Sunnyvale CA, US
Andrew E. Wu - Los Altos Hills CA, US
Mingfei Chen - Santa Rosa CA, US
Nancy P. Nguyen - San Jose CA, US

Assignee:

Medtronic Ardian Luxembourg S.a.r.l. - Luxembourg

International Classification:

A61B 18/14

US Classification:

606 41

Abstract:

Treatment devices with electrode contact surfaces configured for enhancing uniformity of electrical energy distribution are provided. In one embodiment, a treatment device includes a tubular electrode having a wall, a contact surface defined by the wall, and cut shapes at least partially extending through the wall. The tubular electrode is configured to transmit electrical energy to a treatment site within a body lumen via the contact surface, and the individual cut shapes are configured to draw a portion of the electrical energy toward an interior region of the contact surface. A shaft having a distal end portion operably coupled to the tubular electrode can locate the tubular electrode at the treatment site.