Calibration vial stopper with improved security features
A re-sealing puncturable stopper for use with capped vials having lyophilized calibration chemicals therein adapted for use in a manner that minimizes failure modes: (1) in an initial lyophilization manufacturing process; (2) during a subsequent hydration process; (3) while protecting a vial stored on-board an automated clinical analyzer; (4) when punctured for aspiration; and, (5) when re-sealing the vial after aspiration.
1 . A stopper adapted for use in an automated clinical analyzer, the stopper having a generally vertically elongate shape with a cylindrical trunk section, the trunk section having an internal cylindrical cavity closed at the top by a top portion, the trunk also having an opening formed in a side portion of the trunk section.
2 . The stopper of claim 1 wherein the height of the opening is approximately one-half the height of the internal cavity and the width of the opening is approximately one-half the diameter of the trunk section.
3 . The stopper of claim 1 wherein a circular ridge is formed near the top of the trunk section and a groove is formed between the circular ridge and said top portion.
4 . The stopper of claim 1 wherein the top portion is a dome-shaped top portion with a flat in its upper surface.
5 . The stopper of claim 2 wherein the groove is sized to receive a center hole in the top of a threaded cap.
6 . The stopper of claim 3 wherein the ridge is sized to prevent the stopper from being fully inserted into a vial.
7 . The stopper of claim 1 wherein the bottom portion of trunk section is sloped slightly inwards forming a taper.
8 . The stopper of claim 1 wherein the stopper comprises a resealable elastomeric material selected from the group consisting of synthetic rubber, silicone rubber, and thermoplastic elastomers.
9 . The stopper of claim 1 in combination with a threaded cap with a top, the cap having a hole in the top sized so that the top portion of the stopper may be squeezed through hole thereby securing the cap and the stopper together in combination.