The ornamental design for an operatinggrip for endoscope, as shown and described.
FIG. 1 is a top, rear and side perspective view of an operating grip 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 top plan view thereof;
FIG. 5 is a bottom plan view thereof;
FIG. 6 is a left side elevational view thereof; and,
FIG. 7 is a right side elevational view thereof.
The broken lines in the drawings are included for the purpose of illustrating portions of the operating grip for endoscope that form no part of the claimed design.