Described is a needle assembly removal device comprising an inner portion (10), a channel (12) formed in the inner portion (10), and an outer portion (15) movably disposed on the inner portion (10). The channel (12) has a proximal opening (11). Movement of the outer portion (15) relative to the inner portion (10) in a first direction causes the inner portion (10) to change the proximal opening (11) from a first width to a second width.
