Device and method for restricting venous flow for improved blood

Details Device and method for restricting venous flow for improved blood Device and method for restricting venous flow for improved blood

1997-07-21

1999-04-13

Lewis, William

Surgery

Instruments

External pressure applicator

A61M 1700

Patent

active

058938702

ABSTRACT:
An apparatus used in a method of restricting venous flow in an extremity includes a first flexible, stretchable elongate band and a first flexible, stretchable loop fixed to a first end of the first band. A second loop sized to fit about the extremity is defined by passing a free end of the first band through the first loop. Upon pulling a free end of the first band through the first loop in a direction outward from the extremity, the first band stretches against the first loop, thereby causing the second loop to tighten about the extremity to restrict venous flow therethrough. A combination of frictional engagement and stretching of the first band and of the first loop against each other releasably secures the second loop about the extremity in its tightened position, thereby eliminating the need to hold the apparatus to maintain the tightened position. With venous flow restricted in the extremity, various procedures can be performed such as obtaining a blood sample with a conventional fingerstick puncture of the extremity.

REFERENCES:
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patent: 3421761 (1969-01-01), Grant
patent: 3461863 (1969-08-01), Sullinger
patent: 3794019 (1974-02-01), Ritland et al.
patent: 4149540 (1979-04-01), Hasslinger
patent: 4899737 (1990-02-01), Lazarian
patent: 4911162 (1990-03-01), Wolff
patent: 5451234 (1995-09-01), Wassermann
patent: 5540714 (1996-07-01), Payne, Jr. et al.

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