发明名称 |
Needle-free injection system |
摘要 |
A needle-free injection device (30), comprises a housing; a piston (80) disposed at least partially within the housing, the piston having a forward end and a rearward end, the piston being configured to advance relative to the housing from a rearward- most position to a forward-most position during delivery of an injection, so as to cause injectable fluid to be expelled out through an injection orifice; a pressurized gas source configured to deliver pressurized gas to act upon the rearward end of the piston; and a gas seal at the rearward end of the piston, the gas seal being configured to seal a variable-volume gas chamber defined within the housing between the rearward end of the piston and the pressurized gas source, where the needle-free injection device (30) is configured so that the gas seal is compromised upon advancement of the piston (80) to the forward-most position, so as to de-pressurize the variable-volume gas chamber after delivery of an injection.
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申请公布号 |
EP2386325(A2) |
申请公布日期 |
2011.11.16 |
申请号 |
EP20110006638 |
申请日期 |
2005.05.20 |
申请人 |
BIOJECT INC. |
发明人 |
LANDAU, SERGIO;BEYLUND, RYAN;BONICATTO, JAMES M.;DAELLENBACH, KEITH;MILLER, ROBERT;SEDLER, THEODORE WALAKA;STAYLOR, JOHN |
分类号 |
A61M5/30;A61M5/20;A61M5/24;A61M5/31 |
主分类号 |
A61M5/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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