For use in such applications as knee arthroplasty, the connector is made of a block of nylon about 13/4 inches long, 1/2 inch in width, about 5/8 inch high and presents an approximately 1/4 inch radius at the bight of the U. An L-shaped aperture 36 permits the passage of air or other fluid through the connector 20 and is sized to receive nipple 32 at one end thereof as shown in FIG. 3.