Single-use injector with at least one draw hook

Details Single-use injector with at least one draw hook Single-use injector with at least one draw hook

A - Human Necessities

61

M

A61M 5/20 (2006.01) A61M 5/315 (2006.01)

Patent

CA 2668846

The invention relates to a single-use injector comprising a housing (10), arranged in which are at least one mechanical spring energy store (50), at least one piston-cylinder unit (100), which can be effectively filled at least for a certain time, at least one piston-actuating stem (60) and at least one triggering unit (80). The spring energy store comprises at least one pretensioned spring element. The spring-loaded piston-actuating stem has at least one draw rod, which can be moved transversely, at least in certain regions, and by means of a supporting portion supports the tensioned spring energy store on at least one resting surface of the housing. When actuation occurs, the triggering element releases the supporting portion to allow it to move away from the resting surface.

L'invention concerne un injecteur à une voie comprenant un boîtier (10) dans lequel sont disposés au moins un accumulateur d'énergie mécanique à ressort (50), au moins une unité cylindre-piston (100) pouvant au moins temporairement être remplie de substance active, au moins un poinçon (60) de commande du piston et au moins une unité de déclenchement (80). L'accumulateur d'énergie à ressort comprend au moins un élément de ressort précontraint. Le poinçon de commande du piston sollicité par ressort présente au moins une barre de traction déplaçable transversalement au moins sur une partie, qui, au moyen d'une partie de support, supporte l'accumulateur d'énergie à ressort tendu contre au moins une surface d'appui du boîtier. L'élément de déclenchement, lorsqu'il est actionné, autorise le déplacement de la partie de support à l'écart de la surface d'appui.

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