Intravenous needle assembly with air bleed plug

Details Intravenous needle assembly with air bleed plug Intravenous needle assembly with air bleed plug

1978-06-16

1980-03-18

Truluck, Dalton L.

Surgery

Respiratory method or device

Ozone or ion generation

128DIG16, 128221, 138 40, A61M 500

Patent

active

041934008

ABSTRACT:
An intravenous needle assembly and an associated manufacturing method, wherein the needle assembly comprises a hypodermic needle attached to a hub at its trailing end, a transparent blood detection chamber integral with the hub, a catheter disposed around the needle and the needle hub and a plug closing the blood detection chamber, the plug having air breathing means so that upon venipuncture blood from a vein may flow through the needle into the blood detection chamber without substantial air resistance to such flow to visually confirm the accuracy of the introduction of the needle into a vein. The plug is centrally hollow and has an axially directed leading breather projection connected to an annular shoulder or flange. The breather projection comprises a symmetrical hollow truncated conical extension with a hollow interior and walls having a plurality of narrow slits permitting ready passage of air under pressure of the heart while substantially preventing the passage of blood through the slits. The slits are preferably formed during molding of the plug, using molds wherein the apexes of a male mold are made to line contact the inner conical surface of a female mold to form each slit during injection molding of the plug.

REFERENCES:
patent: 223396 (1880-01-01), Shabley
patent: 425530 (1890-04-01), Wayte
patent: 2969066 (1961-01-01), Holter et al.
patent: 3055361 (1962-09-01), Ballard
patent: 3859998 (1975-01-01), Thomas et al.

Affiliated with

Also associated with

Rating

Intravenous needle assembly with air bleed plug does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Intravenous needle assembly with air bleed plug, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Intravenous needle assembly with air bleed plug will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1120276