Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Thermal applicators
Reexamination Certificate
2006-10-10
2006-10-10
Peffley, Michael (Department: 3739)
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Thermal applicators
C606S033000
Reexamination Certificate
active
07118590
ABSTRACT:
Radiation applicators comprise an elongate device having an antenna (240, 340) at their tip for coupling radiation into biological tissue and a dielectric body (250, 350) surrounding the antenna so as to encompass substantially the whole of the near-field region of the antenna and/or to enhance transmission of radiation in the forward direction. The body (250, 350) may be cylindrical with the antenna (240, 340) along its axis. The antenna may be λ/2 in length and λ/2 in radius. The tip (270) of the antenna (240) may be rounded hemispherical with radius λ/2 to enhance forward transmission of radiation. The dielectric constant (ε) of the body (250, 350) is as high as possible to reduce its diameter at a desired operating frequency but may be matched to the surrounding tissue by another layer of dielectric material (380) with a value (ε) intermediate that of the core (360) of the body (350) and the tissue.
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Cesari and McKenna LLP
Microsulis Limited
Roane Aaron
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