A syringe pump having a piston brake

Details A syringe pump having a piston brake A syringe pump having a piston brake

A - Human Necessities

61

M

A61M 5/178 (2006.01) A61M 5/145 (2006.01) A61M 5/20 (2006.01)

Patent

CA 2415522

The syringe pump comprises a receiving position (P) for a syringe (10). The piston plate (14) of the syringe is moved by a drive head (16) which is fastened to a drive rod (17). For locking the piston rod (12) prior to fixing the piston plate (14) in the drive head (16), a braking element (33) is provided on a syringe holding head (25). The syringe holding head (25) further serves for determining the respective syringe size. After placing the syringe holding head (25) against a syringe cylinder (11) the brake element (33) is actuated to temporarily engage the piston rod (12) and fix it relatively to the syringe cylinder (11).

L'invention porte sur une pompe à seringue comprenant une position de réception (P) pour une seringue (10). La plaque de piston (14) de la seringue est actionnée par une tête d'entraînement (16) assujettie à une tige d'entraînement (17). Pour verrouiller la tige de piston (12) avant de fixer la plaque de piston (14) dans la tête d'entraînement (16) on a monté un élément de freinage (33) sur une tête de retenue de seringue (25). Ladite tête de retenue de seringue (25) sert aussi à déterminer la taille respective des seringues. Après avoir placé la tête de retenue de seringue (25) contre un cylindre de seringue (11), on actionne l'élément de freinage (33) pour engager provisoirement la tige de piston (12) et la fixer relativement au cylindre de seringue (11).

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