Certi-seal
US4259956A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 21, 1976 |
| Grant date | Apr 7, 1981 |
| Priority date | — |
| Expiry date | Sep 21, 1996 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61J1/2013
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
This patent describes a novel medicament package particularly adapted for the containment of liquid medication comprising a shell vial having cylindrical walls and an open end and a closed end, within said vial an inwardly extending annular shoulder integral with said cylindrical walls of said vial, said shoulder forming an annular indentation on the exterior of the wall of said vial, said cylindrical walls extending from said shoulder to said open and closed end, said shoulder being in proximity to the open end of said vial, an imperforate resilient stopper sealing the closed end of said vial, the peripheral portion of that side of the stopper facing the open end of the vial forming a seal on the inner surface of said shoulder to prevent the outward movement of said stopper within said vial under the influence of the vapor pressure of said liquid medication, said stopper being adapted to reciprocate in a piston-like fashion to the closed end of said vial to expel the contents thereof through a hollow needle when said stopper has been punctured by said needle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.