Patent ID: 11903767
Assignee: VIEW POINT MEDICAL, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A composite marker, comprising:
a plurality of sealed ultrasound reflective elements, each ultrasound reflective element respectively comprising a porous body having an irregular outer surface, at least one cavity and at least one gas in the at least one cavity to provide reflectivity of ultrasound imaging signals, wherein each ultrasound reflective element comprises a hydrophobic coating that at least temporarily seals the at least one cavity thereof to retain the gas therein, wherein the hydrophobic coating comprises a mono-, di-, tri-, or tetra-alkoxysilane;
at least one contrast material detectable via a detection modality different than ultrasound imaging, wherein the at least one contrast material is not included in an outer layer of each ultrasound reflective element; and
a gel carrier that is at least partially crosslinked, wherein the plurality of sealed ultrasound reflective elements and the at least one contrast material are carried in or on the gel carrier.