Prefilled ampoule-syringe
US4741737A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 1986 |
| Grant date | May 3, 1988 |
| Priority date | — |
| Expiry date | Oct 2, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/3132
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A prefilled ampoule-syringe including an ampoule body having a smaller inner dimension than the body and a stopper means associated with an external capsule for closing the ampoule. The stopper is provided with an internal conduit having at least one transverse branch opening into a longitudinal branch between the interior of the capsule body and a needle-holding tip. The capsule is arranged for actual movement from a position within the neck where it is in a closed position to an open injection position within the ampoule body. When the capsule is in the position in the neck of the ampoule, the contents of the ampoule are in contact only with the walls of the ampoule and the inner surface of the stopper which faces into the neck. When the stopper is moved to injection position, the contents of the ampoule pass through the transverse passage and down the longitudinal passage to the needle holding tip for injection into a patient.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.