Packaging assembly for freeze-dried preparations
US5740654A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 12, 1996 |
| Grant date | Apr 21, 1998 |
| Priority date | — |
| Expiry date | Apr 12, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61J1/201
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Packaging assembly intended for the extemporaneous preparation of suspensions or solutions of a solid active product in a liquid product, the active product having been freeze-dried and being contained in a flask A, and the liquid product being contained in a flask B closed by a dropper (30), a connection member (16) enabling to put in communication the two flasks for the purpose, in a first step, to cause the liquid product to pass from flask B into flask A containing the solid product, then, in a second step, to reverse the assembly and aspirate into flask B the suspension or solution thus formed. Flask A containing the active product is closed by an elastic stopper (10) having a central perforation (12) closed by a perforable operculum (14) which is perforated by the dropper when the flasks are put in communication by means of the connection member. The stopper comprises several lateral recesses (36, 38, 40 and 42), so that, when the freeze-drying step is applied to flask A in which the stopper is partially put in, gas resulting from the freeze-drying escape outside the flask by passing through the lateral recesses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.