Closing appliance used in flexible tube

Details Closing appliance used in flexible tube Closing appliance used in flexible tube

1991-06-19

1993-02-23

Hafer, Robert A.

Surgery

Container for blood or body treating material, or means used...

Having hollow needle or spike for piercing container or...

604403, 604408, 604905, A61M 514

Patent

active

051886294

ABSTRACT:
A closing appliance used in a flexible tube comprising a communicating tube, a column-like portion, and a thin-walled portion formed between the communicating tube and column-like portion. The column-like portion has two wings facing to each other at an end opposite to the thin-walled portion. The wings have rounded surface on the side of the inner surface of the flexible tube, and a total lateral sectional area of the two wings is from 25 to 50% of a sectional area of a hollow portion of the flexible tube. Thanks to wings, damage of the flexible tube on centrifugal separation process can be avoided.

REFERENCES:
patent: 3217710 (1965-11-01), Beall et al.
patent: 4007738 (1977-02-01), Yoshino
patent: 4181140 (1980-01-01), Bayham et al.
patent: 4340049 (1982-07-01), Munsch

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