Powder syringe mixing system
US4515586A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1982 |
| Grant date | May 7, 1985 |
| Priority date | — |
| Expiry date | Nov 30, 2002 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61J1/2093
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A pre-filled chamber having a piston plug at one end and a stopper at the other end. The chamber is filled with a powdered medicament that is to be intermixed with a diluent in a container. Rotatable attachments join the chamber containing the powder with a receptacle on the container. The powdered medicament is expelled from the chamber by the force of a plunger acting on the piston plug. The stopper at the end of the chamber containing the powder serves as a mounting for a piercing tip which breaks a membrane over the neck of the container allowing fluid connection between the chamber and the container and transferral of the powdered medicament from the chamber to the container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.