Surgery – Controlled release therapeutic device or system
Reexamination Certificate
2005-04-26
2005-04-26
Lucchesi, Nicholas (Department: 3763)
Surgery
Controlled release therapeutic device or system
C604S093010, C600S007000
Reexamination Certificate
active
06884239
ABSTRACT:
The field of the invention is site-specific drug delivery capsules (SSDC's). The disclosure relates to a closure member (14) for a substance reservoir (12) of an SSDC (10). The SSDC (10) includes a retainer that provides a non-linear force resisting opening of the closure member (14). The non-linear force ensures that the closure member (14) unseals the reservoir (12) only when an opening force exceeds a maximal value of the resisting force, thereby preventing premature or accidental emptying of the reservoir (12). The preferred means of providing the resistive force is a rolling, elastomeric o-ring (64) that additionally seals the closure member (14) into an aperture (13).
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Hirst Peter Hanson
Houzego Peter John
Morgan Peter Neil
Westland Duncan James
Wilding Ian Robert
Han Mark K.
Lucchesi Nicholas
Pabst Patent Group LLP
Phaeton Research Limited
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