US 11,911,098 B2
Apparatus for treating tumors by evanescent waves
Mehran Matloubian, Encino, CA (US); Timothy J. Brockett, Malibu, CA (US); and Gregg A. Hollingsworth, Tempe, AZ (US)
Assigned to Evanesc Therapeutics, Inc., Encino, CA (US)
Filed by EVANESC THERAPEUTICS, INC., Canoga Park, CA (US)
Filed on Dec. 1, 2021, as Appl. No. 17/539,968.
Application 17/539,968 is a continuation of application No. 16/183,427, filed on Nov. 7, 2018, granted, now 11,213,349.
Claims priority of provisional application 62/582,788, filed on Nov. 7, 2017.
Prior Publication US 2022/0087743 A1, Mar. 24, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 18/18 (2006.01); A61B 18/00 (2006.01)
CPC A61B 18/18 (2013.01) [A61B 2018/00446 (2013.01); A61B 2018/00797 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method of using an apparatus for treating tumors, the method comprising:
providing the apparatus comprising: an RF source generating an RF signal having a frequency of 100 kHz to 500 kHz at an output; an electrically conducting wire(s) or RF coaxial cable coupled to the output of the RF source; an open-ended coaxial waveguide antenna coupled to the electrically conducting wire or RF coaxial cable; and an electrical configuration comprising a pair of conductors at a voltage differential provided within the open-ended coaxial waveguide antenna to generate substantially a plurality of evanescent waves within a spatial volume, while reducing one or more travelling waves within the spatial volume generated by the electrical configuration; and a field distribution configured from the electrical configuration of the open-ended coaxial waveguide antenna and the field distribution characterizing the spatial volume; and
positioning the spatial volume within a vicinity of a tumor such that the spatial positioning provides a higher strength electric field comprising the plurality of evanescent waves within the vicinity of the tumor and provides a lower strength electric field outside of the vicinity of the tumor.