We claim the ornamental design for a jet lavage, as shown and described.
FIG. 1 is a perceptive view of the jet lavage;
FIG. 2 is a left view of the jet lavage of FIG. 1;
FIG. 3 is a right view of the jet lavage of FIG. 1;
FIG. 4 is a back view of the jet lavage of FIG. 1;
FIG. 5 is a front view of the jet lavage of FIG. 1;
FIG. 6 is a top view of the jet lavage of FIG. 1; and,
FIG. 7 is a bottom view of the jet lavage of FIG. 1.
The broken lines of FIG. 1 illustrate an air inlet tube and is included for the purposes of illustrating the environment of the design only and forms no part of the claimed design.