The ornamental design for a capillaryvessel, as shown and described.
FIG. 1 is a top, front, right perspective view of a capillary vessel, and a top, rear, right perspective view; a top, rear, left perspective view; and a top, front, left perspective view thereof are identical to the top, front, right perspective view;
FIG. 2 is a bottom, front, right perspective view thereof, and a bottom, rear, right perspective view; a bottom, rear, left perspective view; and a bottom, front, left perspective view thereof are identical to the bottom, front, right perspective view;
FIG. 3 is a front elevational view thereof, and a rear elevational view, a left elevational view, and a right elevational view thereof are identical to the front elevational view;