Safety syringe for mixing two-component medicaments
US5360410A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 6, 1991 |
| Grant date | Nov 1, 1994 |
| Priority date | — |
| Expiry date | Aug 6, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/60
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A disposable two-component safety syringe with retractable injection needle adapted for the separate storage of medicament and medicament solvent and the pre-injection mixing thereof. The cartridge-type syringe is adapted to be used manually or in conjunction with an automatic injection/aspiration device for breaching a temporary seal between chambers for the medicament and medicament solvent immediately prior to injection are also provided. Pre-measured medicament is provided in a form which requires no pre-injection agitation. The cartridge is also provided with an injection needle disposed completely within the cartridge housing for safely and sanitarily withdrawing the injection needle to reside completely within the disposable cartridge after use. In one embodiment of the invention, a pushrod for automatically agitating the mixing components is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.