Microsyringe for pre-packaged delivery of pharmaceuticals

Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...

Reexamination Certificate

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Details

C604S070000

Reexamination Certificate

active

07988668

ABSTRACT:
A microsyringe includes a body, a barrier movable within the body, and a flow regulator. The body includes a pressurizable chamber, an inlet fluidly connected to the pressurizable chamber, an outlet fluidly connected to the pressurizable chamber, and a cannula fluidly connected to the outlet. The flow regulator is fluidly connected to the cannula to limit the flow of a pharmaceutical through the cannula to a maximum rate. The movable barrier fluidly separates the inlet from the outlet. A pharmaceutical is disposed in a space between the movable barrier and the outlet. The inlet is designed to mechanically and fluidly couple to a hydraulic fluid delivery system. Hydraulic fluid from the inlet pressurizes the chamber, causing the barrier to move and displace the pharmaceutical out of the chamber and into the cannula. The movable barrier may be a piston or a collapsible membrane.

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paten

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