Oral irrigator

FIG. 1 is a top, front, and right side perspective view of an oral irrigator showing my new design.

FIG. 2 is a front elevational view thereof.

FIG. 3 is a rear elevational view thereof.

FIG. 4 is a left side elevational view thereof.

FIG. 5 is a right side elevational view thereof.

FIG. 6 is a top plan view thereof.

FIG. 7 is a bottom plan view thereof, and,

FIG. 8 is a top, rear, and left side perspective view thereof.

The drawings are three dimensional computer graphic drawings of the claimed design. The dark and light color tones of the claimed design are illustrated by dark and light colors, and form no part of the claimed design. The contours of the claimed design are illustrated by shading variation.