Automatic injection device
US4624660A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 1, 1985 |
| Grant date | Nov 25, 1986 |
| Priority date | — |
| Expiry date | Oct 1, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2005/2073
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to an automatic injection device comprising an assembly of a discharge mechanism, a cartridge holder of synthetic material and a cartridge which is slidably accommodated in the cartridge holder. The cartridge includes a glass ampoule, if desired, enveloped by a sheath of shrinkable sheet, the ampoule consisting of an ampoule cylinder in which an injection liquid or various injection liquids separated from each other by stoppers and a piston which can be moved in the ampoule cylinder are provided. The assembly also includes a connection means for an injection needle in which or to which the injection needle, if desired, covered by a guard to maintain the needle in a sterile condition, is connected, and a shoulder between the ampoule cylinder and the needle connection means. The cartridge holder consists of a sleeve-like rear portion which is open at each end and which, after actuating the injection device, is traversed by the ampoule cylinder and the inner surface of which has substantially the same transverse dimensions over the whole length, and a front portion which forms one assembly with the sleeve-like portion and, after actuating the syringe, serves to d…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.