Multiple injection syringe system

Details Multiple injection syringe system Multiple injection syringe system

1992-06-09

1994-10-11

Rosenbaum, C. Fred

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604232, A61M 500

Patent

active

053542843

ABSTRACT:
A multiple injection syringe system having a cartridge carrier that is loaded with three pre-filled cartridges which are to be selectively accessed so that the contents of the cartridges can be delivered to a patient in a particular, predetermined order. The syringe system of the present invention has particular application to facilitating the SASH process, such that two of the cartridges are filled with saline and one with heparin. A double ended needle cannula is carried by a rotatable manifold. One end of the cannula projects outwardly from the manifold for administering an injection, while the opposite end projects inwardly to communicate with a selected cartridge within the carrier. The manifold is rotated around the cartridge carrier to each of three positions corresponding to three steps of the SASH process, whereby the cannula is correspondingly rotated from one cartridge to the next. Fluid from the selected cartridge is expulsed via the cannula by applying to said cartridge a hydraulic pressure that is generated by driving a piston through a fluid filled cylinder.

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