A syringe barrel 3 includes a distal end portion 31, and the distal end portion 31 includes a hollow small-diameter distal end portion 32 having a length of 5 to 6 mm, configured to have a puncture end portion 37 capable of inserting a puncturable portion of other medical device, and a large-diameter portion 33 having an outer diameter of 4.04 to 4.20 mm, larger than that of the small-diameter distal end portion 32, the outer diameter being increased by a 6/100 taper. The distal end portion 31 can puncture the puncturable portion of other medical device, using the small-diameter distal end portion 32, and can be connected to a connection portion of other medical device having a female luer taper, using the large-diameter portion 33.
