Needle-free injection system
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United States of America Patent
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-
Jul 3, 2007
Grant Date -
Oct 7, 2004
app pub date -
Jan 13, 2004
filing date -
Jun 4, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A needle-free injection device is described. The injection device includes a user-grippable housing and a syringe assembly movably secured to the housing. The syringe assembly is configured to expel injectable fluid out of a nozzle upon application of pressurized gas to the syringe assembly. The injection device also includes a pressurized gas delivery mechanism disposed within the housing and configured to selectively apply pressurized gas to the syringe assembly. The pressurized gas delivery mechanism is at least partly actuated by pressing the nozzle onto an injection site so that the syringe assembly moves relative to the housing.
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