Powder and liquid mixing syringe

Details Powder and liquid mixing syringe Powder and liquid mixing syringe

A - Human Necessities

61

M

A61M 5/19 (2006.01)

Patent

CA 2581671

A mixing syringe having a first sealed chamber containing a powder (powder housing) and a second sealed chamber containing a liquid (liquid housing). When the user needs to inject a patient, he or she holds the mixing syringe approximately upright and depresses a plunger. This motion causes a piercer to pierce a foil seal separating the two chambers. The liquid then drops down into the powder housing. The liquid flows through a passage in a piston located in the powder housing, where it then comes in contact with the powder itself. As the user continues pressing the plunger downward, the piercer comes to rest within the piston and seals the passage through the piston, thereby locking the piercer and piston together. The device is then ready for an injection. As the plunger is further depressed, the piston expels the powder and liquid mixture through a needle.

Une seringue de mélange, présentant une première chambre scellée contenant une poudre (boîtier de poudre) et une deuxième chambre scellée contenant un liquide (boîtier de liquide). Lorsque l'utilisateur a besoin d'injecter un patient, il ou elle tient la seringue en position environ horizontale et appuie sur un piston. Ce mouvement provoque un perceur à percer une pellicule en aluminium séparant les deux chambres. Le liquide descend ensuite vers le bas dans le boîtier de poudre. Le liquide coule à travers un passage dans un piston situé dans le boîtier de poudre, où il vient alors en contact avec la poudre. mesure que l'utilisateur continue d'appuyer sur le piston vers le bas, le perceur vient se reposer dans le piston et scelle le passage à travers le piston, verrouillant le perceur et le piston ensemble. Le dispositif est alors prêt pour une injection. mesure que le piston est enfoncé davantage, le piston expulse la poudre et le mélange de liquide à travers une aiguille.

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