| 摘要 |
A needle guard assembly for use in conjunction with a syringe or like device having a needle projecting from one end thereof comprising a first tubular member having one end constructed to cooperatively receive the needle end portion of a syringe with the needle extending therethrough, a second tubular member telescopingly positioned within the first tubular member and extending endwardly from the free end thereof, the second tubular member being movable between an extended position completely enclosing the needle and a retracted position, a spring member biasing the second tubular member to its extended position, bendable tab members located adjacent the free end of the first tubular member, and an annular member biasing the tab members outwardly so that the inner surface thereof is substantially coplanar with the inner surface of the first tubular member, movement of the second tubular member into the first tubular member moving the annular member out of engagement with the tab members thereby enabling the tab members to move inwardly behind the end edge of the second tubular member to restrict further movement thereof into the first tubular member when the spring member moves the second tubular member to its extended position. Other embodiments of the present device include various configurations associated with the locking mechanism and the positioning of the tab members associated therewith.
|
