The ornamental design for a surgical devicethumbbow, as shown and described.
FIG. 1 us a top front perspective view of a surgical device thumb bow;
FIG. 2 is a left side elevation view thereof;
FIG. 3 is a right side elevation view thereof;
FIG. 4 is a top plan view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a front elevation view thereof; and,
FIG. 7 is a rear elevation view thereof.
The broken lines in each of FIGS. 1-7 are directed to environment and are for illustrative purposes only; the broken lines form no part of the claimed design.