Injection applicator for a hypodermic syringe

A - Human Necessities – 61 – M

Patent

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Details

A61M 5/31 (2006.01) A61M 5/178 (2006.01)

Patent

CA 2499402

There is provided an injection device comprising a barrel adapted for receiving a syringe assembly, a trigger assembly, tension spring means and stopping means. The trigger assembly comprises retractable blocking means for blocking the syringe assembly at a first axial point within the barrel and a trigger for retracting said blocking means from blocking the syringe along said first axial point along the barrel. The tension spring means has a barrel end mountable on the barrel and a syringe end mountable on the syringe assembly, whereby said tension spring means imparts an axial force to the syringe assembly when the syringe assembly is in a cocked position. The stopping means are for retaining the syringe assembly in an injected position within the barrel upon release of the syringe assembly from the cocked position followed by axial travel of the syringe assembly within the barrel under the influence of the axial force.

La présente concerne un dispositif d'injection comprenant un cylindre adapté pour recevoir un corps de seringue, un déclencheur, un mécanisme à ressort de tension et un mécanisme d'arrêt. Le déclencheur comprend un mécanisme de blocage rétractable pour bloquer la seringue à un premier point axial dans le cylindre et un déclencheur pour rétracter ledit mécanisme de blocage qui bloque la seringue le long dudit premier point axial le long du cylindre. Le mécanisme à ressort de tension est pourvu d'une extrémité de cylindre fixable sur le cylindre et d'une extrémité de seringue fixable sur le corps de la seringue, ledit mécanisme à ressort de tension transmettant une force axiale au corps de la seringue quand cette dernière est en position armée. Le mécanisme d'arrêt sert à maintenir la seringue en position d'injection dans le cylindre lorsque le corps de la seringue est dégagé de la position armée, suivi de la course axiale de la seringue dans le cylindre sous l'effet de la force axiale.

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