FIG. 1 is a front isometric view of a dilator apparatus in accordance with one embodiment.

FIG. 2 is a front elevational view of the dilator apparatus of FIG. 1.

FIG. 3 is a rear elevational view of the dilator apparatus of FIG. 1.

FIG. 4 is a first side elevational view of the dilator apparatus of FIG. 1.

FIG. 5 is a second side elevational view of the dilator apparatus of FIG. 1; and,

FIG. 6 is a top plan view of the dilator apparatus of FIG. 1.

The bottom view does not form a part of the design.

The broken line showing is included for the purpose of illustrating portions of the article and forms no part of the claimed design.

The design is shown broken away and embraced by a bracket in order to indicate that a specific length of dilator apparatus forms no part of the claimed design.