Needle point guard assembly

Details Needle point guard assembly Needle point guard assembly

1995-07-11

1996-12-17

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604192, 604263, A61M 500

Patent

active

055848109

ABSTRACT:
A needle point guard assembly includes inner and outer housings disposed in nested relationship to one another to permit relative rotation therebetween. The proximal end walls of the inner and outer housings have apertures each of which is dimensioned to slidably receive a needle. The apertures are disposed in the housings such that they are registered in one rotational orientation of the housings relative to one another to define a first opening that allows a needle to pass therethrough. The needle point guard assembly further includes a spring for rotatably driving the housings relative to one another and a trigger for selectively holding the inner housing with respect to the outer housing in a rotational orientation where the apertures define the first opening. The trigger moves out of interfering relationship between the inner housing and the outer housing when the sharp distal tip of the needle is withdrawn into the needle point guard assembly. In this condition, the spring will rotatably drive the housings into orientations where the apertures will not be substantially aligned so that the overlapping area is smaller than the first opening. The edges of the apertures will thus bind against the needle and prevent further movement of the needle point guard assembly either proximally or distally along the needle.

REFERENCES:
patent: 5322517 (1994-06-01), Sircom et al.
patent: 5415645 (1995-05-01), Friend et al.

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