Bayonet release of safety shield for needle tip
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 (LA) and a sharp end (28, 32);
a safety shield (16) associated with the needle for movement relative to the needle between a stowed position in which the safety shield is spaced from the sharp end of the needle and a deployed position in which the safety shield covers the sharp end;
a rotary connector (74, 76) adapted to connect the safety shield (16) to the mounting structure (12) in the stowed position and to quickly release the connection of the safety shield to the mounting structure by rotation of the rotary connector about the longitudinal axis of the needle less than 360 degrees to permit movement of the safety shield to the deployed position covering the sharp end of the needle.
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Accused Products
Abstract
A needle assembly having a shield attached for quick release from the remainder of the needle assembly to be moved to cover the sharp tip. The shield can be disconnected by rotation of only about 90 degrees. When not needed to cover the sharp tip, the shield is held in a stowed position out of the way so as not to interfere with use of the needle assembly.
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Citations
18 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 (LA) and a sharp end (28, 32);
a safety shield (16) associated with the needle for movement relative to the needle between a stowed position in which the safety shield is spaced from the sharp end of the needle and a deployed position in which the safety shield covers the sharp end;
a rotary connector (74, 76) adapted to connect the safety shield (16) to the mounting structure (12) in the stowed position and to quickly release the connection of the safety shield to the mounting structure by rotation of the rotary connector about the longitudinal axis of the needle less than 360 degrees to permit movement of the safety shield to the deployed position covering the sharp end of the needle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A medical instrument (10) comprising:
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mounting structure (12);
an operative member (16) associated with the mounting structure for movement relative to the mounting structure between a first position and a second position spaced from the first position;
a rotary connector (74, 76) adapted to connect the operative member (16) to the mounting structure (12) in the first position and to quickly release the connection of the operative member to the mounting structure by rotation of the rotary connector about the longitudinal axis (LA) of the needle, at least one of the rotary connector and mounting structure including a retention structure (76A, 78A) adapted to interengage the rotary connector and mounting structure in the first position to resist relative rotation of the rotary connector and mounting structure for securing the operative member against inadvertent release from the mounting structure. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A method of shielding a sharp end of a needle (14) of a needle assembly (10), the method comprising the steps of:
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rotating a connector (74, 76) attaching a safety shield (16) to the needle assembly about an axis of the needle less than a full turn thereby to release the connection of the safety shield to the needle assembly;
sliding the safety shield along a longitudinal axis (LA) of the needle to a position in which the safety shield covers the sharp end (28, 32) of the needle. - View Dependent Claims (17, 18)
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Specification