The ornamental design for an intraoraldeviceadapterbarbassembly, as shown and described.
FIG. 1 is a left side elevational view of the intraoral device adapter barb assembly, the right side elevational view being a mirror image thereof;
FIG. 2 is a bottom plan view thereof, the top plan view being a mirror image thereof; and,
FIG. 3 is a rear elevational view thereof.
The dash-dot-dash broken lines immediately adjacent the claimed areas represent the bounds of the claimed design while all other broken lines represent environment and are for illustrative purposes only; the broken lines form no part of the claimed design.