| 摘要 |
A syringe infusion or other patient health care fluid delivery arrangement or system having a substantially constant force syringe holder/driver for a fluid-dispensing, preferably disposable, syringe to which an on-off valve and effectively bendably flexible tube connecting set are connected. The outside diameter of the tubing of an available flow-rate assortment of suitably identifiably marked tube connecting sets is formed of a desired single size by extrusion addition of a plastic outer overcoat layer over the inner fluid-carrying tubing, enabling interchangeable accommodation and securing thereon of standard single-size conventional or other desired connectors, whereby a single health care professional may fill a syringe with a prescribed dosage and concentration of health care fluid, and may also preselect and fix the delivery rate for the fluid, by selecting and assembling a given syringe holder/driver, fluid-filled syringe and tube connecting set. The syringe holder/driver is powered by a pair of Neg'ator constant force springs which roll off and onto ball-bearing-mounted rotatable drums carried by a syringe plunger pusher or driver which is centered and guided in its longitudinal movement by the opposed Neg'ator springs and the syringe plunger, which springs are laterally stabilized by nonsliding strip-laying stabilizing retentive engagement with, and strip-pickup removal from engagement with, the syringe holder/driver cover.
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