Patent ID: 9718003
Date: 2017-08-01
CPC Classifications: B01D,B01L,C12N

Claim:
1. A centrifuge tube assembly, comprising: an elongated and vertically disposed outer containment tube having an open upper end and a closed lower end; said outer containment tube being comprised of a transparent material; said outer containment tube having a vertically disposed cylindrical post centrally positioned therein, which has upper and lower ends and which extends upwardly from said lower end thereof; said cylindrical post having an elongated and vertically disposed keyway formed therein which extends inwardly thereinto between said lower and upper ends thereof; an elongated and vertically disposed inner tube, having an open lower end and an open upper end, positioned in said outer containment tube; said lower end of said inner tube being vertically slidably mounted on said cylindrical post; said inner tube having an alignment key at said lower end thereof which is slidably received by said keyway in said cylindrical post to prevent rotation of said inner tube with respect to said cylindrical post and said outer confinement tube; said inner tube having an aspiration port formed therein above said lower end thereof; said inner tube having an imprinted band thereon above said aspiration port; said outer containment tube having an imprinted millimeter line thereon below said upper end thereof; a cup-shaped cap selectively removably mounted on said upper end of said outer containment tube; said cap having a filtered vent port which is in communication with the interior of said outer containment tube; said inner tube selectively slidably extending upwardly through said cap whereby said upper end of said inner tube is positioned above said cap; a seal means in said cap between said cap and said inner tube; a locking assembly associated with said cap for selectively locking said inner tube in various vertical positions with respect to said outer containment tube; said upper end of said inner tube having a male luer thereon; and a female luer cap for selective engagement with said male luer to close said male luer.