Needle-free injection device

A fluid injecting device generally including a fluid delivery assembly and a needle-free injecting assembly. The fluid delivery assembly delivers or transfers the fluid medicine from a cartridge into the needle-free injecting assembly for injecting into a patient. A drive train applies a force to a...

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Bibliographic Details
Main Authors Byland, Timothy D, Collins, James Matthew, Fisher, Mark James, Grimley, John, Mojarrad, Mehran, O'Fallon, John Michael, Sampson, Craig Field, Tappel, James G
Format Patent
LanguageEnglish
Published 02.08.2011
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Summary:A fluid injecting device generally including a fluid delivery assembly and a needle-free injecting assembly. The fluid delivery assembly delivers or transfers the fluid medicine from a cartridge into the needle-free injecting assembly for injecting into a patient. A drive train applies a force to a piston inside the cartridge during the delivery of the fluid to the needle-free injecting assembly to prevent adhesion or static friction between the piston and the cartridge. In addition, sensors can be used to help ensure the proper amount of dosage is transferred to the needle-free injecting assembly, conserve power, reduce leakage during disassembly, among other functions.