Syringe holder/driver and syringe arrangement and syringe/holder driver therefor
US4755172A · kind A · utility
Inventor
Key dates
| Filing date | Jun 30, 1987 |
| Grant date | Jul 5, 1988 |
| 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 syringe to which an on-off valve and effectively bendably flexible tube connecting set are connected for delivery of a health care fluid to a patient delivery site at a preselected preset rate which is precision self-metered and determined by the fluid pressure and viscosity and the resistence to flow of fluid from the syringe and through the tube connecting set. The tube connecting set may be precision made to enable enhancement of predictability of fluid flow rate therethrough, and the various sets may be individually provided with indicia indicative of flow rate for given fluid and fluid pressure conditions. A single responsible health care professional may fill a syringe with a prescribed dosage and concentration of fluid to be administered to a patient and may preselect the delivery rate, 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-mou…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.