MULTIPLE INJECTION SYRINGE SYSTEM

摘要

A multiple injection syringe system (1) having a cartridge carrier (20) that is loaded with three pre-filled cartridges (50) which are to be selectively accessed so that the contents of the cartridges can be delivered to a patient in a particular, predetermined order. One end of a double ended needle projects outwardly from a rotatable manifold (8) for administering an injection, while the opposite end projects inwardly to communicate with a selected cartridge (e.g. 50-1) within the carrier (20). The manifold (8) is rotated around the cartridge carrier (20) to each of three distinct positions, whereby the cannula (2) is correspondingly rotated from one cartridge to the next. Fluid from the selected cartridge (50-1) is expulsed via the cannula (2) by applying to said cartridge a hydraulic pressure that is generated by driving a piston (46) through a fluid filled cylinder (42).