Available Technology

Directional Microwave Applicator/Antenna

Abstract: 
A directional, cylindrical antenna of ~0.095-in. (~2.4-mm) diameter has been developed for localized delivery of microwave radiation for heating (and thus killing) diseased tissue without excessively heating nearby healthy tissue. By "localized" is meant that the antenna radiates much more in one radial direction than in the opposite radial direction, so that it heats tissue much more on one side than it does on the opposite side. Prior compact, cylindrical antennas designed for therapeutic localized hyperthermia do not exhibit such directionality: that is, they radiate in approximately axisymmetric patterns. Prior directional antennas designed for the same purpose have been, variously, (1) too large to fit within catheters or (2) too large, after deployment from catheters, to fit within the confines of most human organs. In contrast, the present antenna offers a high degree of directionality and is compact enough to be useable as a catheter in some applications.
Benefits: 
applications: 
Patent Number: 
7,410,485
Internal Laboratory Ref #: 
JSC-QL-0016
Patent Status: 
Until Patent Expiration Date: 2026-10-16
Patent Issue Date: 
January 1, 1970
Agency
NASA
State: 
Texas
Lab Representatives
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