Safety needles medical devices capable of one handed...

Details Safety needles medical devices capable of one handed... Safety needles medical devices capable of one handed...

A - Human Necessities

61

M

128/84

A61M 5/32 (2006.01)

Patent

CA 1324546

ABSTRACT OF THE DISCLOSURE Improved shielded medical devices which minimize accidental needlesticks of the skin by an exposed contaminated needle are provided. The medical devices include a hollow inner tube body (10) and a telescoping outer shield (12). The outer surface (71) of the inner tube has front and rear circumferential grooves (38, 36), with a shoulder (46) located forward of the front groove (38) and a ramp (52) located rearward of the front groove (38) and decreasing in diameter as it extends away from the front groove. The shoulder (46) has a larger diameter than the ramp diameter adjacent the front groove and permits the shield (12) to be slided over the inner tube (10) without locking into the inner tube during assembly. The outer shield (12) has two inwardly extending circumferential protrusions (34a, 34b) in proximate location to each other, and at least one outwardly extending gripping flange (87 or 28). A first of the protrusions (34b) is located at the rear end of the shield and yieldlngly engages the rear groove (36) during use of the medical device, thereby permitting normal use of an exposed needle. After needle contamination, the shield (12) is gripped by the thumb and forefinger of the practitioner and slid forward along the inner tube (10) until the forward inwardly extending protrusion (34a) of the shield slides up the ramp (52) and lockingly engages the front groove (38). The shield (12) is then locked relative to the inner tube (10) such that the needle is shielded. With properly arranged gripping flanges (28 or 87), the shielding action may be accomplished with one hand.

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