NEEDLE ASSEMBLY INCLUDING OBTURATOR WITH SAFETY RESET
First Claim
1. An obturator for use with a needle assembly to remove a sample of biological material collected in a hollow needle of the needle assembly, the obturator comprising:
- a grip for holding and manipulating the obturator;
a shaft extending from the grip, the shaft being sized and shaped for reception in a central axial passageway of the hollow needle for pushing the sample out of the central axial passageway;
a shield slidably supported on the shaft for engaging and shielding a sharp end of the hollow needle when the obturator shaft is being inserted into the needle to remove the sample.
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Accused Products
Abstract
A needle assembly is able to collect a sample of biological material in a needle of the assembly. The needle assembly has a safety shield capable of being moved on the 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 assembly further includes an obturator that can be inserted into the needle to remove the sample from the needle. A reset member, which in some embodiments is associated with the obturator, is capable of operatively engaging the locking mechanism to release the locking mechanism and allow the shield to be moved away from the sharp tip.
106 Citations
14 Claims
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1. An obturator for use with a needle assembly to remove a sample of biological material collected in a hollow needle of the needle assembly, the obturator comprising:
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a grip for holding and manipulating the obturator;
a shaft extending from the grip, the shaft being sized and shaped for reception in a central axial passageway of the hollow needle for pushing the sample out of the central axial passageway;
a shield slidably supported on the shaft for engaging and shielding a sharp end of the hollow needle when the obturator shaft is being inserted into the needle to remove the sample. - View Dependent Claims (2, 3, 4, 5)
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6. A needle assembly comprising:
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mounting structure;
a needle mounted on the mounting structure and extending outwardly therefrom, the needle having a longitudinal axis, a sharp end and a central axial passageway;
a safety shield associated with the needle and comprising a tubular housing having an open end, the tubular housing being 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, and a locking mechanism adapted to releasably lock the tubular housing in position covering the sharp end of the needle; and
a reset member selectively operatively engageable with the locking mechanism of the safety shield for releasing the locking mechanism to permit the tubular housing to be move away from the sharp end of the needle;
the safety shield further comprising a resilient membrane substantially covering the open end of the tubular housing, the membrane being resiliently deformable upon engagement with the reset member to permit the reset member to move into operative engagement with the locking mechanism for releasing the locking mechanism. - View Dependent Claims (7, 8)
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9. A needle assembly as set forth in claim 72 wherein the reset member is supported by the obturator shaft.
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10. A needle assembly comprising:
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mounting structure;
a needle mounted on the mounting structure and extending outwardly therefrom, the needle having a longitudinal axis, a sharp end and a central axial passageway;
a safety shield associated with the needle and comprising a tubular housing, the tubular housing being 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, and a locking mechanism adapted to releasably lock the tubular housing in position covering the sharp end of the needle; and
a reset member supported on the safety shield for sliding movement relative to the safety shield generally parallel to a outer surface of the safety shield, the reset member being selectively operatively engageable with the locking mechanism of the safety shield for releasing the locking mechanism to permit the tubular housing to be move away from the sharp end of the needle. - View Dependent Claims (11, 12, 13, 14)
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Specification