Disposable medical syringe with safety protection

Details Disposable medical syringe with safety protection Disposable medical syringe with safety protection

1994-11-23

1996-01-16

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604192, 604220, A61M 500

Patent

active

054844134

ABSTRACT:
A non-reusable, disposable syringe has a cylindrical barrel with a needle assembly on its forward end, and a needle trap for protecting the needle from contact. The needle trap includes a hollow plastic housing with a rearward end portion adapted to fit over the cylindrical barrel, and a generally cone-shaped forward end portion having a closed forward extremity. A locking member of generally hollow cylindrical shape is secured within the rearward end of the needle trap housing and has forwardly directed flexible, circumferentially spaced, inwardly tapering fingers that taper inwardly more rapidly than the forward end of the housing when the needle trap is placed over the barrel the fingers of the locking member flex outwardly to pass over the needle base and then flex inwardly to assume a locking position behind the needle base.

REFERENCES:
patent: 4233975 (1980-11-01), Yerman
patent: 4941879 (1990-07-01), Butler et al.
patent: 4995869 (1991-02-01), McCarthy
patent: 5045063 (1991-09-01), Spielberg
patent: 5259840 (1993-11-01), Boris
patent: 5347078 (1994-09-01), Eckels

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