The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 11, 2020
Filed:
May. 07, 2018
Pyrexar Medical Inc., Salt Lake City, UT (US);
Paul F. Turner, Bountiful, UT (US);
Jason Ellsworth, Farmington, UT (US);
Pyrexar Medical Inc., Salt Lake City, UT (US);
Abstract
A radio frequency annular phased array hyperthermia system providing a heated focal zone with a diameter of 3 cm or less in a tissue mass includes a plurality of at least 42 radio frequency energy applicators in three rings adapted to surround the tissue mass. A bolus having a dielectric constant is positioned between the energy applicators and the tissue mass. The energy applicators operate at a frequency of at least about 900 MHz. to create the heated focal zone. The circumferential spacing between adjacent applicators in each ring is less than a critical distance and spacing between adjacent side by side rings is also less than a critical distance with such critical distances being interdependent on the frequency of the energy radiated, the dielectric constant of the bolus, the size of the bolus, and the size of the tissue mass.