DEVICES AND METHODS FOR COOLING MICROWAVE ANTENNAS

Title:

DEVICES AND METHODS FOR COOLING MICROWAVE ANTENNAS

Document Type and Number:

WIPO Patent Application WO2005011049

Kind Code:

A3

Abstract:

Devices and methods for cooling microwave antennas are disclosed herein. The cooling systems (10) can be used with various types of microwave antennas. One variation generally comprises a handle portion with an elongate outer jacket extending from the handle portion. A microwave antenna is positioned within the handle and outer jacket such that cooling fluid pumped into the handle comes into contact directly along a portion of the length, or a majority of the length, or the entire length of the antenna to allow for direct convective cooling. Other variations include cooling sheaths which form defined cooling channels around a portion of the antenna. Yet another variation includes passively-cooled systems which utilize expandable balloons to urge tissue away from the surface of the microwave antenna as well as cooling sheaths which are cooled through endothermic chemical reactions. Furthermore, the microwave antennas themselves can have cooling lumens integrated directly therethrough.

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Inventors:

TUROVSKIY ROMAN (US)
KIM STEVEN (US)
PRAKASH MANI (US)
ROSSETTO FRANCESCA (US)

Application Number:

PCT/US2004/022555

Publication Date:

November 10, 2005

Filing Date:

July 13, 2004

Export Citation:

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Assignee:

VIVANT MEDICAL INC (US)
TUROVSKIY ROMAN (US)
KIM STEVEN (US)
PRAKASH MANI (US)
ROSSETTO FRANCESCA (US)

International Classes:

A61B18/18; A61B18/00; (IPC1-7): A61B18/18

Foreign References:

US4140130A	1979-02-20
US5829519A	1998-11-03
US5281217A	1994-01-25
US5964755A	1999-10-12

Other References: