Dose display for an injection syringe

A - Human Necessities – 61 – M

Patent

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Details

A61M 5/24 (2006.01) A61M 5/20 (2006.01) A61M 5/315 (2006.01)

Patent

CA 2265574

An injection syringe comprising a housing accommodating an ampoule containing medicine sufficient for a number of dosed injections. The syringe has a dose setting mechanism by which doses may be set by rotating a dose setting element relative to the housing and the dose set is indicated on a scale. The scale is formed as a clock dial having a first part secured to the housing and a second part which is rotatable relative to the first part and which is coupled to the dose setting element, one of the parts carries the scale and the other carries an indicating member indicating a point on the scale. The angular distance between the divisions of the scale corresponds to the minute divisions on an ordinary clock. Holes are provided along the scale which holes can receive a pin forming a stop which cannot be passed by the indicating member.

L'invention concerne une seringue d'injection comprenant un boîtier qui abrite une ampoule contenant un médicament dans une quantité suffisante pour fournir un certain nombre de doses à injecter. La seringue présente un mécanisme de dosage qui fonctionne par rotation d'un élément de dosage par rapport au boîtier, la dose déterminée étant indiquée sur une graduation constituée par un cadran de montre présentant une première partie fixée au boîtier et une seconde partie pouvant tourner par rapport à la première et couplée à l'élément de dosage. Une des parties comporte la graduation et l'autre comporte un élément indiquant un point sur la graduation. La distance angulaire entre les divisions de la graduation correspond aux divisions des minutes sur une montre ordinaire. Des trous sont ménagés le long de la graduation afin de recevoir une broche formant une butée au-delà de laquelle l'élément indicateur ne peut se déplacer.

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