Microcentrifuge tube with upwardly projecting lid extension

Details Microcentrifuge tube with upwardly projecting lid extension Microcentrifuge tube with upwardly projecting lid extension

1992-05-11

1993-07-06

Housel, James C.

Chemical apparatus and process disinfecting, deodorizing, preser

Control element responsive to a sensed operating condition

436810, 435296, 206815, 215295, 215305, 215306, 220260, 220269, 220270, 220375, B01L 300

Patent

active

052251659

ABSTRACT:
A microcentrifuge tube or other thermoplastic sample container having a round opening and a frictionally seated sealing lid, the lid having a size and shape to cover the perimeter of the tube opening and maintain the inside of the tube free of any contaminant. The lid viewed on an upright closed container has a downwardly extending annular portion shaped to sealing fit inside the opening, the lid further having an integral upwardly projecting lid extension configured and arranged on top of the lid to facilitate aseptic opening, grasping and identification-labeling of the container. The location, angle and size of the lid extension allow mechanical pressure to be used on top of the lid, rather than beneath the lid, to open the container. The improved apparatus and method for opening the container functions to prevent sample contamination which could otherwise occur when a fingernail or other container opening instrument is inserted beneath, and contacts some portion(s) of the underside of the lid. The location, size, and surface finish of the lid extension also allow grasping of the microcentrifuge tube after placement in a centrifuge rotor or storage rack, as well as labeling the tube for sample identification and tracking purposes.

REFERENCES:
patent: 4534483 (1985-08-01), Kassis et al.
patent: 4674640 (1987-06-01), Asa et al.
patent: 4713219 (1987-12-01), Gerken et al.
patent: 4755356 (1988-07-01), Robbins et al.
patent: 4858502 (1989-08-01), Warburg
patent: 4872563 (1989-10-01), Warder et al.
patent: 4956298 (1990-09-01), Diekmann
patent: 4991759 (1991-02-01), Scharf

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