Easy-slip plunger/plunger rod assembly for a syringe or a cartridge

摘要

It is disclosed an improved elastomeric plunger ring (298, 356, 372, 382, 398), provided for use in conjunction with a cartridge or syringe (284), which allows a low-friction, slideable engagement between the elastomeric plunger ring and the inside wall (288) of a syringe or a cartridge barrel (286), said low-friction, slideable sealing engagement requiring reduced breakaway and running forces for operation of the cartridge or syringe (284). <IMAGE>