Surgery – Instruments – Electrical application
Reexamination Certificate
2006-04-25
2006-04-25
Isabella, David J. (Department: 3738)
Surgery
Instruments
Electrical application
C607S098000, C607S101000
Reexamination Certificate
active
07033352
ABSTRACT:
A flexible microwave antenna assembly for a surgical ablation instrument capable of conforming to a tissue surface for ablation thereof. The ablation instrument includes a transmission line having a proximal portion suitable for connection to an electromagnetic energy source. The antenna assembly includes a flexible antenna coupled to the transmission line for radially generating an electric field sufficiently strong to cause tissue ablation. A flexible shield device is coupled to the antenna to substantially shield a surrounding area of the antenna from the electric field radially generated therefrom while permitting a majority of the field to be directed generally in a predetermined direction. A flexible insulator is disposed between the shield device and the antenna which defines a window portion enabling the transmission of the directed electric field in the predetermined direction. The antenna, the shield device and the insulator are formed for selective manipulative bending thereof, as a unit, to one of a plurality of contact positions to generally conform the window portion to the biological tissue surface to be ablated.
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Berube Dany
Gauthier Jules
Nguyen Hiep
AFX Inc.
Fenwick & West LLP
Isabella David J.
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