Surgery – Controlled release therapeutic device or system – Implanted dynamic device or system
Reexamination Certificate
2005-12-06
2011-12-06
Lucchesi, Nicholas (Department: 3763)
Surgery
Controlled release therapeutic device or system
Implanted dynamic device or system
C604S133000, C604S151000
Reexamination Certificate
active
08070745
ABSTRACT:
A method and apparatus for infusing medication into a patient's body using a medication chamber referenced to ambient pressure. The apparatus includes a medication chamber enclosed by a peripheral wall which includes a movable portion configured to transfer exterior ambient pressure into the chamber. Means are provided for exerting a negative bias force acting on the movable portion in a direction opposed to the ambient pressure force. Thus, the resultant pressure in the chamber will be negative with respect to ambient pressure, reducing the risk that the chamber can be overpressurized and produce an unintended medication discharge.
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Communication dated Nov. 26, 2010 in corresponding EPO App. Ser. No. 04 755 946.3.
Gibson Scott R.
Lord Peter C.
Eisenberg Rebecca E
Henricks Slavin & Holmes LLP
Lucchesi Nicholas
The Alfred E. Mann Foundation For Scientific Research
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