Tube, stopper and compression ring for blood sampling systems

Details Tube, stopper and compression ring for blood sampling systems Tube, stopper and compression ring for blood sampling systems

1989-03-17

1990-05-08

Norton, Donald F.

Bottles and jars

Closures

Self-sealing, piercable-type closure

215274, B65D 4736

Patent

active

049230727

ABSTRACT:
An evacuated blood collection tube has a stopper made of deformable synthetic rubber, incorporating a skirt fitting over the outer wall of the tube neck, and integral with the skirt a plug that penetrates the neck of the tube. The sealing function is performed by two embodiments, the upper cylindrical sealing portion of the skirt and the plug. An annular recess surrounds the plug. A compression ring made of a more rigid material is set around the upper peripheral wall of the skirt that overlaps the cylindrical sealing portion. The compression ring cooperates with the rubber stopper and the tube to provide a clenching mechanism ensuring automated guidance of the tube in full sealing engagement over the plug. Furthermore it maintains a constant sealing pressure of the skirt over the tube optimizing vacuum preservation.

REFERENCES:
patent: 1430685 (1922-10-01), Sampson
patent: 1509916 (1924-09-01), Waite
patent: 4133441 (1979-01-01), Mittleman et al.
patent: 4279353 (1981-07-01), Honma

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