Abstract: Heating pattern uniformity is provided in a coaxial microwave hyperthermia probe by varying the open area in the outer conductor in an axial direction such that there is a maximum open area in the axial center portion. The variations may be provided by winding an outer conductor in a helical pattern with a variable pitch or by cutting openings of axially varying size in a solid outer conductor. The invention is applicable to both flexible and rigid probes.
Type:
Grant
Filed:
June 29, 1990
Date of Patent:
March 24, 1992
Assignee:
Labthermics Technologies
Inventors:
Richard W. Fetter, Peter D. Gadsby, Jeffery L. Kabachinski