Automatic injector
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Oct 29, 1996
Grant Date -
N/A
app pub date -
Mar 24, 1993
filing date -
Mar 27, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An automatic injector for the separate storage of a solid and a solvent for this solid. The injector comprises a discharge mechanism, a cartridge assembly and a front cover which is connected to a front portion of the cartridge assembly and provided at its front with a pierceable central area. The cartridge assembly comprises a hollow barrel, a pierceable stopper connected to the front portion of the barrel and constituting a compartment in front of said stopper for accommodating the solid, a piston slidably accommodated in the backward portion of the barrel and constituting a compartment for liquid in the barrel, an injection needle longitudinally extending in the liquid compartment, and means for centering the distal end of the needle in order to position the needle tip towards the pierceable stopper. The front cover is capable of rotational movement relative to the outer sleeve to allow the liquid in the barrel to reach the solid compartment through the needle. The injection needle is accommodated in the barrel in an unfixed manner to allow relative longitudinal movement between the injection needle and the barrel.
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