Needle safety shield with reset
First Claim
Patent Images
1. A needle assembly (10) comprising:
- mounting structure (12);
a needle (14) mounted on the mounting structure and extending outwardly therefrom, the needle having a longitudinal axis, a sharp end (28) and a central axial passageway;
a safety shield (16) associated with the needle and comprising a tubular housing (50) adapted for movement relative to the needle between a stowed position in which the tubular housing is spaced from the sharp end of the needle and a deployed position in which the tubular housing covers the sharp end, a locking mechanism (52) adapted to releasably lock the tubular housing in position covering the sharp end of the needle, and an unlocking mechanism (96) adapted to engage the locking mechanism to unlock the tubular housing from the needle; and
an obturator (26) including a shaft (70) sized and shaped for reception in the central axial passageway of the needle, and a reset member (72) operatively connected to the shaft and selectively engageable with the unlocking mechanism of the safety shield for moving the unlocking mechanism into selective engagement with the locking mechanism for releasing the locking mechanism to permit the tubular housing to move away from the sharp end of the needle.
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Abstract
A safety shield is capable of being moved on a needle assembly to cover a sharp tip of the needle assembly. The shield can be locked in place over the sharp tip by a locking mechanism. The safety shield has a locking mechanism for locking the shield in place covering the sharp needle tip. The safety shield also has an unlocking mechanism that can move to release the locking mechanism and allow the shield to be moved to uncover the sharp tip. A reset member may include projecting portions that can be received through the shield to actuate the unlocking mechanism for releasing the locking mechanism.
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Citations
20 Claims
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1. A needle assembly (10) comprising:
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mounting structure (12);
a needle (14) mounted on the mounting structure and extending outwardly therefrom, the needle having a longitudinal axis, a sharp end (28) and a central axial passageway;
a safety shield (16) associated with the needle and comprising a tubular housing (50) adapted for movement relative to the needle between a stowed position in which the tubular housing is spaced from the sharp end of the needle and a deployed position in which the tubular housing covers the sharp end, a locking mechanism (52) adapted to releasably lock the tubular housing in position covering the sharp end of the needle, and an unlocking mechanism (96) adapted to engage the locking mechanism to unlock the tubular housing from the needle; and
an obturator (26) including a shaft (70) sized and shaped for reception in the central axial passageway of the needle, and a reset member (72) operatively connected to the shaft and selectively engageable with the unlocking mechanism of the safety shield for moving the unlocking mechanism into selective engagement with the locking mechanism for releasing the locking mechanism to permit the tubular housing to move away from the sharp end of the needle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A resettable needle safety shield (16) for use in selectively shielding and unshielding a sharp tip (28) of a needle (14), the safety shield comprising:
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a housing (50) sized and shaped for substantially surrounding the sharp needle tip to hinder access to the sharp tip;
a locking mechanism (52) associated with the housing, the locking mechanism being adapted to lock the housing in position substantially surrounding the sharp needle tip;
an unlocking mechanism (96) associated with the housing for movement relative to the housing between a first position in which the locking mechanism is free to lock the housing in position relative to the sharp needle tip and a second position in which the unlocking mechanism releases the locking mechanism to permit movement of the housing relative to the needle. - View Dependent Claims (13, 14, 15, 16)
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- 17. A resettable needle safety shield (16) for use in selectively shielding and unshielding a sharp tip (28) of a needle (14), the safety shield comprising a housing (50) sized and shaped for substantially surrounding the sharp needle tip to hinder access to the sharp tip, a locking mechanism (52) associated with the housing, the locking mechanism being adapted to lock the housing in position substantially surrounding the sharp needle tip, the housing including an end wall (53) having at least one hole (54) therein arranged in relation to the locking mechanism for receiving structure through the end wall for use in releasing the locking mechanism.
Specification