Needle destroyer with improved mechanical advantage
AssigneeAmerican Hospital Supply Corporation
InventorsPradip V. Choksi, William D. Christoffel, Christopher J. C. Edwards
Life of this patent
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Abstract
A device having one embodiment for severing a hypodermic needle at its hub and cannula with a single motion. The device has hub and cannula cutters that are joined at a slidable joint and pivoted at noncoaxial pivot points to provide increased mechanical advantage to the cannula cutter. In another preferred embodiment, the same type cutting mechanism has its cutters spaced so as to sever a hypodermic syringe barrel and a cannula of a needle attached to the syringe barrel in a single motion.
Claims28
A needle destroyer with a common opening for receiving and severing both the hub and cannula of a needle, wherein the improvement comprises:
- a hub cutter and a cannula cutter on the destroyer joined to each other at a movable joint providing a greater mechanical advantage at the cannula cutter than at the hub cutter when the joined cutters are actuated.
A needle destroyer with a common opening for receiving and severing both the hub and cannula of a needle, wherein the improvement comprises:
- a hub cutter and a cannula cutter pivotally connected to the destroyer at pivot points that are noncoaxial, and the cutters are joined to a common actuating handle providing a greater mechanical advantage at the cannula cutter than at the hub cutter when the handle is moved.
A syringe and needle destroyer with a common opening for receiving and severing both a syringe and an attached needle's cannula, wherein the improvement comprises:
- a syringe cutter and a cannula cutter on the destroyer joined to each other at a movable joint providing a greater mechanical advantage at the cannula cutter than at the syringe cutter when the joined cutters are actuated.
A syringe and needle destroyer with a common opening for receiving and severing both a syringe and an attached needle's cannula, wherein the improvement comprises:
- a syringe cutter and a cannula cutter pivotally connected to the destroyer at pivot points that are noncoaxial, and the cutters are joined to a common actuating handle providing a greater mechanical advantage at the cannula cutter than at the syringe cutter when the handle is moved.
Dependencies are inferred from the claim text.