Prefilled single-dose syringe
US4596561A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 1984 |
| Grant date | Jun 24, 1986 |
| Priority date | — |
| Expiry date | Dec 31, 2004 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/347
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The prefilled single-dose syringe 10 in the application features a barrel 11 provided with an narrowed-diameter portion 27 or neck and a rim surrounding its opening; a nozzle 12 equipped with finger stubs and a needle-carrying ferrule 13 transpierced by an axial channel 31; and a stoppering device 23 featuring an elastomer stoppering cork mounted at the end of a bracing ferrule that is attached to the bottom of the nozzle. This lower end of the bracing ferrule fits onto a collar, in the shape of a truncated cone, that is part of the bottom of the nozzle. This collar serves as a support for a membrane microfilter 28, which is pressed between the opposing surfaces of the bracing ferrule and the filter-carrying ferrule.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.