Injection button

A - Human Necessities – 61 – M

Patent

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A61M 5/315 (2006.01)

Patent

CA 2676810

A push button connection for an injection device comprising a push button (10) and a driving part (20). The two parts of the push button connection are mounted to each other and is relatively rotatable to each other. In order to minimize the friction occurring between the push button and the driving part when relatively rotated forces are transmitted via a pivot bearing (18, 22). In order also to minimize the effect of forces appearing dislocated from the centre line a number of radial bearings (13, 23; 14, 25) having a little friction diameter is provided.

L'invention porte sur la connexion d'un bouton poussoir destiné à un dispositif d'injection comprenant un bouton poussoir (10) et une partie d'entraînement (20). Les deux parties de la connexion sont montées l'une sur l'autre et peuvent être mises en rotation l'une par rapport à l'autre. Pour réduire les frottements se produisant entre le bouton poussoir et la partie d'entraînement lorsque ces parties sont en rotation relative, les forces sont transmises par un palier à pivot (18, 22). De plus, des roulements radiaux (13, 23; 14, 25) présentant un faible diamètre de frottement permettent de réduire les effets des forces excentrées par rapport à l'axe central.

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