Directional reflector shield assembly for a microwave ablation instrument
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Nov 6, 2001
Issued Date -
N/A
app pub date -
Feb 2, 2000
filing date -
Oct 23, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A directional reflective shield assembly (25) is provided for a microwave ablation instrument (20) having an antenna (23) coupled to a transmission line (21). The antenna (23) is formed to generate an electric field sufficiently strong to cause tissue ablation. The shield assembly (25) includes a cradle device (26) disposed about the antenna (23) in a manner substantially shielding a surrounding area of the antenna (23) from the electric field radially generated therefrom. The cradle device (26) further provides a window portion (27) communicating with the antenna (23) which is strategically located relative the antenna to direct a majority of the field generally in a predetermined direction.
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