| US 7,549,986 B2 | ||
| Systems and methods for performing simultaneous ablation | ||
| Robert F. Rioux, Ashland, Mass. (US); Robert Garabedian, Tyngsboro, Mass. (US); and Jerry Jarrard, Sunnyvale, Calif. (US) | ||
| Assigned to Boston Scientific Scimed, Inc., Maple Grove, Minn. (US) | ||
| Filed on Feb. 19, 2008, as Appl. No. 12/33,262. | ||
| Application 12/033262 is a continuation of application No. 11/238403, filed on Sep. 28, 2005, granted, now 7,354,436. | ||
| Application 11/238403 is a continuation of application No. 10/713357, filed on Nov. 14, 2003, granted, now 6,958,064, filed on Oct. 25, 2005. | ||
| Prior Publication US 2008/0140065 A1, Jun. 12, 2008 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. A61B 18/18 (2006.01); A61B 18/14 (2006.01) | ||
| U.S. Cl. 606—32 [606/41] | 11 Claims |
| 1. A system for treating tissue using electrical energy, comprising:
a first ablation device comprising a first probe assembly comprising a cannula with a lumen therein, a shaft configured for
axial movement within the lumen, and a first electrode secured to a distal end of the shaft, the probe assembly configured
for insertion into the tissue at a first location; and
a second ablation device comprising a second, separate probe assembly comprising a cannula with a lumen therein, a shaft configured
for axial movement within the lumen, and a second electrode secured to a distal end of the shaft, the probe assembly configured
for insertion into the tissue at a second location different from the first location; and
a source of electrical energy having first and second terminals respectively coupled to the first and second electrodes, the
first and second terminals operatively coupled to separate control circuits connected in parallel with one another, such that
the first and second ablation devices are configured for substantially simultaneously creating first and second lesions at
first and second sites, respectively, such that as impedance of tissue at the first site increases, the second electrode continues
to deliver current to tissue at the second site.
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