Surgery – Truss – Pad
Patent
1991-09-24
1993-06-29
Hindenburg, Max
Surgery
Truss
Pad
128771, A61B 500
Patent
active
052225020
ABSTRACT:
A blood collecting needle including a hollow cannula, both ends of which are sharp tips, and a hub for supporting the center portion thereof. The hub includes a sheath which is formed of an elastic body and fixedly mounted on the hub and which surrounds the cannula in a liquid sealed state projecting from the back section of the hub. The hub also includes an air passage connecting the space between the sheath and the cannula with outside air. Flashback can be reliably confirmed, for example, when the tip of the cannula pierces an intravenous vein.
REFERENCES:
patent: 3648684 (1972-03-01), Barnwell et al.
patent: 3886930 (1975-06-01), Ryan
patent: 4416290 (1983-11-01), Lutkowski
patent: 4416291 (1983-11-01), Kaufman
patent: 4679571 (1987-07-01), Frankel et al.
Hindenburg Max
Terumo Kabushiki Kaisha
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