Syringe driver/syringe/tube connecting set fluid delivery arrangement, and tube connecting sets therefor
US4863429A · kind A · utility
Inventor
Key dates
| Filing date | Jun 30, 1987 |
| Grant date | Sep 5, 1989 |
| Priority date | — |
| Expiry date | Jun 30, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/14506
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
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 longit…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.