Injection spring with locking collar for a protective needle sle

Details Injection spring with locking collar for a protective needle sle Injection spring with locking collar for a protective needle sle

1992-03-10

1993-11-16

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604263, A61M 532

Patent

active

052618943

ABSTRACT:
This is an all-plastic protective sleeve for the needle of a medical device. It comprises, a plastic base carrying a bottom end of the needle; a plastic end-cap slidably mounted on the needle adjacent a tip end thereof; a plurality of longitudinal plastic slats extending from the base to the end-cap; a cylindrical plastic locking collar disposed over the plurality of longitudinal slats adjacent the end-cap; and, a plastic spring disposed over the plurality of longitudinal slats between the base and the end-cap. The spring is a unitary plastic helical compression spring comprising a cylindrical collar portion disposed over a center portion of the plurality of longitudinal slats with first and second portions of helical compression spring turns extending therefrom toward the base and the locking collar, respectively. The locking collar has an outside diameter larger than the outside diameter of the spring and is of a thickness sufficient to produce a textured grippable area at the periphery thereof.

REFERENCES:
patent: 4139009 (1979-02-01), Alvarez
patent: 4804371 (1989-02-01), Vaillancourt
patent: 4820275 (1989-04-01), Haber et al.
patent: 4863435 (1989-09-01), Sturman et al.
patent: 4867172 (1989-09-01), Haber et al.

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