Indwelling needle assembly

Details Indwelling needle assembly Indwelling needle assembly

2006-11-28

2010-06-01

Lucchesi, Nicholas D (Department: 3763)

Surgery

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

Treating material introduced into or removed from body...

C604S164080, C604S164120

Reexamination Certificate

active

07727198

ABSTRACT:
An indwelling needle assembly for introducing a catheter into a vascular system is disclosed. The indwelling needle assembly is provided with: a needle capable of being slidably fitted in the catheter and insertable into the vascular system; a base body fixed to a proximal end of the needle; a first sleeve slidably fitted around the base body, which is movable between a first position to expose a distal end of the needle and a second position to conceal the distal end of the needle; an elastic body intervening between the base body and the first sleeve so as to urge the first sleeve toward the second position; a second sleeve telescopically fitted to the first sleeve, which includes a latching device configured to hold the first sleeve at the second position; a cover fixed to the base body, which is so dimensioned as to house the first sleeve and the second sleeve when the first sleeve is at the first position; and a lock configured to releasably hold the first sleeve at the first position.

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