of syringe barrels and stoppers
A medical syringe assembly includes a first opening and a second
opening at opposite ends of a tubular barrel having an inner wall.
The inner wall includes an inner surface. A stopper having an engagement
surface is slidably received in the tubular barrel and includes
a portion for engaging the surface of the inner wall of said tubular
barrel. A lubricant is disposed over a limited area of at least
one member of the inner wall of the tubular barrel and the engagement
surface of said stopper, whereby a sufficient amount of the lubricant
is available to provide adequate reduction of friction between the
surface of the inner wall of the tubular barrel and the engagement
surface of the stopper.