Surgery – Respiratory method or device – Means for mixing treating agent with respiratory gas
Reexamination Certificate
2006-05-09
2006-05-09
Nguyen, Anhtuan T. (Department: 3731)
Surgery
Respiratory method or device
Means for mixing treating agent with respiratory gas
C128S203120, C128S203210
Reexamination Certificate
active
07040316
ABSTRACT:
A medicament delivery device for administering a medicament to a user includes a medicament reservoir and an entrance port and an exit port each disposed adjacent the reservoir. A gas chamber disposed adjacent the entrance port. The device includes a pressurizing mechanism operable to pressurize said gas chamber to at least a prescribed pressure. A first frangible membrane extends across the entrance port and separates the reservoir from the gas chamber. A second frangible membrane extends across the exit port. When the pressurizing mechanism is attached, at least one of the first and second membranes is responsive to the prescribed pressure in the gas chamber to burst to allow gas to flow through the entrance port and the reservoir and to carry the medicament through the exit port.
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Bhuta Anjana
Connelly Robert I.
Pettis Ronald J.
Shermer Charles D.
Sullivan Vincent J.
Becton Dickinson and Company
Erezo Darwin P
Nguyen Anhtuan T.
West Robert E.
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