Reusable pharmaceutical dispenser with full stroke indicator

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 83/76 (2006.01) A61M 5/178 (2006.01) A61M 5/19 (2006.01) A61M 5/24 (2006.01) A61M 5/315 (2006.01) B01L 3/02 (2006.01) A61M 5/50 (2006.01)

Patent

CA 2138528

A pharmaceutical dispenser includes a housing (4), containing two pharmaceutical cartridges (32, 34), slidably mounted to a sliding body (100). A replaceable needle manifold assembly (10) is mounted to the housing and fluidly couples the cartridges with a hypodermic needle at a common exit. The sliding body is part of a reciprocating drive assembly used to drive a pair of drive stems (88) against the pistons (96, 98) of the cartridges, thus forcing predetermined amounts of the pharmaceuticals out the needle. The movement of the sliding body between retracted and post-injection positions remains constant. However, the amounts and proportions of the pharmaceuticals injected during the delivery stroke is chosen by the user using stroke adjusters (182) carried by the sliding body. A bistable status flag (186) is mounted to the sliding body to indicate when the sliding body is in the post-injection and retracted positions. If a dose selected is more than is available, the status flag is not tripped.

Distributeur de médicaments comprenant un boîtier (4) qui contient deux cassettes de médicaments (32, 34) montées sur les coulisses d'un corps coulissant (100). Un ensemble d'aiguilles remplaçable (10) s'adapte au boîtier et raccorde facilement les cassettes à une aiguille hypodermique à une sortie commune. Le corps coulissant fait partie d'un mécanisme d'entraînement alternatif servant à entraîner une paire de tiges d'entraînement (88) contre les pistons (96, 98) des cassettes, expulsant ainsi des quantités prédéterminés de médicaments hors de l'aiguille. Le mouvement du corps coulissant entre la position rétractée et la position post-injection demeure constant. Toutefois, les quantités et les proportions de médicaments injectés durant la course d'administration sont déterminées par l'utilisateur au moyen de régleurs de course (182) situés sur le corps coulissant. Un indicateur bistable (186) monté sur le corps coulissant indique quand le corps coulissant est en position rétractée ou en position post-injection. Si la dose choisie est supérieure à la quantité disponible, l'indicateur n'est pas enclenché.

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