Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Thermal applicators
Patent
1996-01-16
1998-07-21
Shay, David M.
Surgery: light, thermal, and electrical application
Light, thermal, and electrical application
Thermal applicators
607103, 607 96, 606 27, 606 33, A61B 1736
Patent
active
057828970
ABSTRACT:
Microwave heating apparatus for fixating tissue comprises an electrically conductive waveguide structure having opposite first and second walls each of which has opposite first and second ends and a longitudinal centerline. A body of non-magnetic dielectric material inside the waveguide structure bridges the first and second walls preferably at their centerlines. A pocket extends through a wall of the waveguide structure into the body and a tissue holder containing contents, namely a tissue sample and a fixation solution, is arranged to be received in the pocket. The dielectric constant of the body is selected to closely match the composite dielectric constant of the tissue holder and its contents so that when microwave power is delivered into the waveguide structure for heating a succession of samples, variations in the dielectric properties of the different samples will not significantly affect the tuning of the waveguide structure. A radiometric sensor may be coupled to the waveguide structure so that the temperature of the tissue sample may be monitored non-invasively for temperature control and display purposes.
REFERENCES:
patent: 4715727 (1987-12-01), Carr
patent: 4891239 (1990-01-01), Dudley
Microwave Medical Systems, Inc.
Shay David M.
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