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Priority to ES0024713UpriorityCriticalpatent/ES24713Y/en
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Infusion, Injection, And Reservoir Apparatuses
(AREA)
Abstract
Elastic adjustment piston for medical injection syringes, essentially characterized in that it is constituted by a tube or cylinder of metal, shorter than the ordinary pistons, crossed longitudinally at its center by a rod, which projects to the outside of the cited cylinder and by the front part thereof corresponding to the interior of the syringe, whose rod has, at its front, a terminal plate, and at the height of the leading edge of the cylinder a metal washer, being disposed between said plate and washer elastic, rubber or similar, separated by washers, which complete the plunger and surrounding the central stem; said rod being susceptible to undergoing a slight sliding towards the rear part of the piston, which determines a compression of the elastic rings, which undergo a dilatation that causes the widening of the diameter of the piston, thus effecting a perfect fit that prevents all kinds of leaks of the liquid to be injected. (Machine-translation by Google Translate, not legally binding)
ES0024713U1950-10-071950-10-07
Elastic adjusting plungers for medical injection syringes
ExpiredES24713Y
(en)