The ornamental design for a steerablestructure for endoscope, as shown and described.
FIG. 1 is a perspective view of a steerable structure for endoscope showing our new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top plan view thereof; and
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is another perspective view thereof.
The break included along the length of the steerable structure for endoscope as seen in FIGS. 1-5 of the drawing disclosure is for ease of illustration.