US 12,350,015 B2
Radio frequency applicator
Dima Shmidov, Durham, NC (US); Paolo Maccarini, Durham, NC (US); Idan Steinberg, Superior Charter Township, MI (US); Michael M. Thornton, London (CA); and Christopher Nelson Davis, Ann Arbor, MI (US)
Assigned to ENDRA Life Sciences Inc., Ann Arbor, MI (US); and Duke University, Durham, NC (US)
Filed by ENDRA Life Sciences Inc., Ann Arbor, MI (US); and Duke University, Durham, NC (US)
Filed on Nov. 10, 2023, as Appl. No. 18/506,722.
Prior Publication US 2025/0152016 A1, May 15, 2025
Int. Cl. A61B 5/00 (2006.01)
CPC A61B 5/0093 (2013.01) [A61B 5/4244 (2013.01)] 27 Claims
OG exemplary drawing
 
1. A radio frequency (RF) applicator, the RF applicator comprising:
a waveguide having a first interior surface comprising a first aperture, a second interior surface opposing the first interior surface, a third interior surface adjacent to the first and second interior surfaces, a fourth interior surface opposing the third interior surface, and a fifth interior surface perpendicular to the first, second, third, and fourth interior surfaces;
an aperture antenna;
a solid dielectric insert within the waveguide, the solid dielectric insert having a second aperture formed therethrough that is configured for alignment with the first aperture;
an RF connector, configured to receive generated RF energy pulses;
at least one shim, wherein the at least one shim is planar-shaped and has a third aperture therethrough configured to align with the first and second apertures; and
a radio frequency feed pin configured for electrical connection to the RF connector, wherein the radio frequency feed pin is disposed within the first, second, and third apertures and affixed to the second interior surface.