Injection syringe plunger valve assembly

A - Human Necessities – 61 – M

Patent

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Details

A61M 5/31 (2006.01)

Patent

CA 2758597

A syringe system having a syringe with a body and a hollow barrel chamber, and a plunger shaft slidable in the barrel chamber, and a needle body adapted for holding a needle. The syringe system includes a valve housing having a valve guide chamber therein, where the valve guide chamber has an input port fluidly connectable to a fluid pressurizing means, a storage port in fluid communication with the barrel chamber, and a discharge port in fluid communication with the needle body. The valve body includes a valve plunger slidable in the valve guide chamber, and a biasing member coupled to the valve plunger at a first end of the biasing member.

L'invention porte sur un système de seringue ayant une seringue avec un corps et une chambre cylindrique creuse, et une tige de piston coulissable dans la chambre cylindrique, et un corps d'aiguille adapté pour contenir une aiguille. Le système de seringue comprend un boîtier de soupape ayant une chambre de guidage de soupape dans celui-ci, où la chambre de guidage de soupape a un port d'entrée pouvant être relié fluidiquement à un moyen de pressurisation de fluide, un port de stockage en communication fluide avec la chambre cylindrique, et un port de décharge en communication fluide avec le corps d'aiguille. Le corps de soupape comprend un piston de soupape coulissable dans la chambre de guidage de soupape, et un élément de sollicitation couplé au piston de soupape à une première extrémité de l'élément de sollicitation.

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