Safety disposable needle structure

Details Safety disposable needle structure Safety disposable needle structure

1998-06-18

1999-10-12

Stright, Ronald

Surgery

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

Treating material introduced into or removed from body...

604192, 604198, 604411, 604413, 600576, 128919, A61M 500

Patent

active

059647396

ABSTRACT:
A disposable needle having individual, spring biased, first and second retractable, open protective sleeves. The first retractable sleeve covers the needle end employed to extract patient blood and the second retractable sleeve covers the needle end that transfers blood to a collection tube. Each sleeve is provided with diametrically disposed slits receiving diametrically disposed ear extensions on the needle support. A support segmented housing maintains the sleeves and needle into a unitary structure. Detents are disposed on the end of the first sleeve that telescopingly receives the open end of the second sleeve. In use, the first sleeve is manually retracted and the detents secure the sleeve in retracted position. A tubular support on the opposite end of the segmented housing receives a blood collection tube therein that forcibly retracts the second sleeve and permit penetration of the blood collection tube. When the blood retraction tube is withdrawn, the second sleeve again provides a protective cover for the needle tip. Upon patient needle removal, the user grasps a pair of arms on the segmented housing and structure thereon removes the detents to permit spring return of the first sleeve to protective needle tip covering status.

REFERENCES:
patent: 4921491 (1990-05-01), Champ

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