Safety needle with needle hub, and methods of use thereof
Inventors
Lewkonya, Gad • Daily, David • Raday, Lior
Assignees
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Publication Number
US-11219720-B2
Publication Date
2022-01-11
Expiration Date
Abstract
A needle protection system, adapted to protect a tip of a hypodermic needle connected or connectable to a syringe. The system comprises a shield to shield the tip of the needle; a needle hub engaged to the hypodermic needle and having an exterior surface including at least one slot. The slot includes at least three surfaces corresponding to three operative orientations of said shield. The needle hub is connected to the shield such that the shield can move axially, but cannot rotate, relative to the needle hub. The three operative orientations include a storage operative orientation, an injection operative orientation, and a needle protection operative orientation. The system also includes a locking sleeve, at least one biasing element, a needle sheath, and at least one tab in the slot to prevent undesired movement between said surfaces.
Core Innovation
The invention relates to a needle protection system adapted to protect a tip of a hypodermic needle connected or connectable to a syringe. The system includes a shield disposed in a protected operative orientation to shield the tip of the hypodermic needle, and a needle hub engaged to the hypodermic needle and having an exterior surface including at least one slot.
The needle hub slot includes at least three surfaces corresponding to three operative orientations of the needle protection system, including a storage operative orientation, an injection operative orientation, and a needle protection operative orientation. The shield is connected to the needle hub such that the shield can move axially, but cannot rotate, relative to the needle hub, and a locking sleeve functionally associated with the shield can rotate, but cannot move axially, relative to the shield.
The locking sleeve includes at least one guiding tooth disposed within the slot and movable relative thereto between the surfaces to transition the shield between the three operative orientations. Axial movement of the shield is biased by at least one biasing element adapted for axial biasing of the shield, and a needle sheath adapted to be disposed about an end of the shield includes at least one tab.
In the storage operative orientation, the tab is disposed within the slot to prevent the guiding tooth from moving between the surfaces, such that removing the needle sheath enables needle-tip exposure.
Claims Coverage
Independent claim coverage is provided by one independent claim. It specifies the overall needle protection system architecture, including the non-rotating axially movable shield relative to the needle hub, a rotating locking sleeve with guiding teeth for orientation transitions, and a storage needle sheath/tab that blocks guiding-tooth movement between slot surfaces.
Axially movable but non-rotating shield with hub slot having orientation surfaces
A needle hub engaged to the hypodermic needle has an exterior surface including at least one slot, said slot including at least three surfaces corresponding to three operative orientations (storage, injection, and needle protection); the needle hub connects to the shield such that the shield can move axially but cannot rotate relative to the needle hub.
Rotating locking sleeve with guiding tooth transitions between operative orientations
A locking sleeve functionally associated with said shield can rotate but cannot move axially relative to said shield; the locking sleeve includes at least one guiding tooth disposed within the slot of the needle hub and movable relative thereto between the surfaces to transition said shield between the three operative orientations.
Axial biasing of shield and storage sheath tab blocking guiding-tooth motion
At least one biasing element is adapted for axial biasing of the shield, and a needle sheath disposed about an end of the shield includes at least one tab adapted, in the storage operative orientation, to be disposed within the slot and prevent the at least one guiding tooth from moving between the surfaces.
The independent claim defines a needle protection system where orientation transitions are produced by a rotating locking sleeve with guiding teeth moving within a multi-surface hub slot, while the shield itself moves axially only under bias and cannot rotate relative to the hub; a needle sheath tab in the storage orientation prevents guiding-tooth movement between slot surfaces.
Stated Advantages
Documented Applications
No documented applications found
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