Valved intravenous needle assembly

Details Valved intravenous needle assembly Valved intravenous needle assembly

1992-08-24

1993-11-23

Yasko, John D.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604179, A61N 500

Patent

active

052639436

ABSTRACT:
A needle assembly includes an elongate first cylindrical cavity having a first end and a second end, with the second end formed with a conical recess, the conical recess including a through-extending bore in communication with the recess directed into a second cavity, wherein reverse flow of fluid relative to the first cylindrical body is prevented from flow into the second cylindrical body and contamination of intravenous fluid directed into the assembly.

REFERENCES:
patent: 3834380 (1974-09-01), Boyd
patent: 4468224 (1984-08-01), Enzmann et al.
patent: 4569348 (1986-02-01), Hasslinger
patent: 4950254 (1990-08-01), Andersen et al.

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