Vent for flashback plug

Details Vent for flashback plug Vent for flashback plug

1989-05-11

1991-11-19

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

A61M 5178

Patent

active

050662848

ABSTRACT:
A flashback vent plug is provided for catheters with air vents drilled by a laser beam which allow venting of the hollow plug upon venous entry, but which vents are so small that blood cannot pass. As a result, no leakage ever takes place. As a further feature of the invention, is the addition of a component to the resin making up the vent plug body which optimizes absorption of the laser beam wave length. The air vent design of this invention provides sufficient cross-section for achieving the required air flow, and therefore rapid flashback and venous entry indication, yet its cost of manufacture is considerably reduced when compared to plug designs that involve multi-step assembly.

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patent: 4767408 (1988-08-01), McFarlane
patent: 4811737 (1989-03-01), Rydell
patent: 4821722 (1989-04-01), Miller et al.
patent: 4894052 (1990-01-01), Crawford
patent: 4917671 (1990-04-01), Chang

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