Sliding sheath for medical needles

Details Sliding sheath for medical needles Sliding sheath for medical needles

1987-01-29

1989-07-11

Truluck, Dalton L.

Surgery

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

Treating material introduced into or removed from body...

604198, A61M 500

Patent

active

048468118

ABSTRACT:
Apparatus and methods of utilizing the same to prevent accidental medical needle sticks are disclosed, characterized by use of a raised locking member coaxially mounted upon the needle approximately midway between a body member mounting the needle and the needle tip which presents an exterior contour to engage complementary features within the interior channel of a tubular sleeve which slides coaxially along the needle. The slidable sleeve is held at a first position proximate the body member and exposing the needle tip by a mechanical detent formed from frictional engagement of complementary surfaces upon the sleeve and the locking member and/or the body member. After medical use, the spent and contaminated needle is sheathed by sliding the tubular sleeve to a second position wherein it is securely held by a detent resultant from engagement with the locking member. The sheathing guards against accidental needle sticks transmitting disease. An optional end cap may be affixed including frangible affixation by engagement with the locking member, slidable sleeve, or body member. All components may be readily retrofitted upon preexisting needles.

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