Energy-dissipating, safety blood collection tube holder

Details Energy-dissipating, safety blood collection tube holder Energy-dissipating, safety blood collection tube holder

1988-08-30

1990-08-14

Howell, Kyle L.

Surgery

Truss

Pad

604110, 604198, 604263, A61B 514

Patent

active

049478630

ABSTRACT:
A disposable blood collection tube holder having particular application to the field of vacuum tube phlebotomy and being characterized by maximum safety and the ability to avoid an accidental needle stick and the spread of a contagious, and possibly life threatening, disease. The blood collection tube holder comprises an inner cylinder, from which a double ended hypodermic needle cannula is supported, and an outer protective sleeve. The outer sleeve is coaxially aligned with and slideable axially over the inner cylinder from a retracted position, at which the needle cannula is exposed for making a veni puncture and drawing a blood sample, to an extended position, at which the cannula is completely surrounded by and rendered irretrievable within the outer sleeve. A plurality of successive energy absorbing and force dissipating stations are located along the inner cylinder. The multiple stations cooperate with a segmented ring which extends around the periphery of the outer sleeve to perform the dual functions of locking the outer sleeve in the axially extended position while, at the same time, transforming the jarring impact locking forces into relatively smooth deceleration forces, so as to avoid a whiplash of the needle cannula and a possible splattering of a blood sample.

REFERENCES:
patent: 2880725 (1959-04-01), Kendall
patent: 4166450 (1979-09-01), Abramson
patent: 4409990 (1983-10-01), Mileikowsky
patent: 4631057 (1986-12-01), Mitchell
patent: 4737144 (1988-04-01), Choksi
patent: 4758231 (1988-07-01), Haber et al.
patent: 4774964 (1988-10-01), Bonaldo
patent: 4790827 (1988-12-01), Haber et al.

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