Injector
US4642102A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 19, 1985 |
| Grant date | Feb 10, 1987 |
| Priority date | — |
| Expiry date | Jul 19, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/3156
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An injector such as a hypodermic syringe and the like is improved in that an amount of injection each time thereof is mechanically determined by a provision of a stopper means disconnectably attached to a plunger of the injector, which stopper means and the plunger are engaged with each other through a projection-recess engagement thereof, in which engagement the stopper means acts also as a wedge-like means inserted between the plunger and a barrel of the injector to make it possible that the stopper means abutting against a rear end of the barrel at a time when the injection operation is completed prevents the plunger from being advanced beyond it predetermined position, under the effect of its wedge action.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.