Injector device and method for its operation

A - Human Necessities – 61 – M

Patent

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Details

A61M 5/315 (2006.01) A61M 5/36 (2006.01) A61M 5/20 (2006.01)

Patent

CA 2369952

Injector device, and method for its operation, for containers of syringe type, comprising a barrel of axially roughly constant cross-section, a front opening and at least one movable wall inserted in the barrel for displacement of a container content, the injector comprising a) a housing or housing part arranged to receive the container at least axially stationary, b) an integral or composite piston rod arrangement operable to displace the container movable wall at least in the forward direction and c) a track system for controlling or sequencing the piston rod movements, the track system comprising at least one cooperating track and follower, the cooperating track and follower being arranged stationary with respect to the housing and the piston rod respectively, or vice versa, and in cooperation allowing at least one forward for the piston rod. The track system comprises arrangements initiation, dose setting and expulsion of container content.

L'invention concerne un dispositif d'injection, ainsi que son procédé de fonctionnement, pour des récipients de type seringue, comprenant un cylindre de section axiale sensiblement constante, une ouverture frontale et au moins une paroi mobile insérée dans le cylindre et servant à déplacer le contenu dudit récipient. Le dispositif d'injection comprend a) un logement ou partie de logement conçue pour recevoir le récipient de manière à ce qu'il soit fixe au moins axialement, b) une tige de piston monobloc ou composite servant à déplacer la paroi mobile du récipient au moins vers l'avant et c) un système de rail servant à commander la tige de piston ou la séquence de ses mouvements, ce système de rail comprenant au moins un rail et un suiveur associés, fixes par rapport au logement et à la tige du piston respectivement, ou inversement, et en coopération, permettant au moins un mouvement de la tige de piston vers l'avant. Le système de rail comprend des moyens d'amorce, de dosage et d'expulsion du contenu du récipient.

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