Patent ID: 6074373
Filing Date: 2000-06-13
Classification: A61M

Abstract:
A syringe comprising:a conical-frustum-shaped free end portion; anda Luer-Lok portion mounted on a plane of truncation of said conical-frustum-shaped free end portion and configured to attach at least one of an extension tube, a three-way cock and a disposable needle, said Luer-Lok portion including an inner cylindrical portion, an outer cylindrical portion surrounding said inner cylindrical portion, a bottom wall provided between said inner and outer cylindrical portions, said bottom wall including an upper surface, and at least two projecting helical ribs formed in parallel with each other on an inner peripheral surface of said outer cylindrical portion, said at least two projecting helical ribs defining grooves and at least one of said at least two projecting helical ribs including a lower end portion formed at a position higher than said upper surface of said bottom wall,wherein the at least one of an extension tube, a three-way cock and a disposable needle includes a cylindrical connector including at least two projecting helical ribs on an outer peripheral surface of said cylindrical connector, such that the at least one of an extension tube, a three-way cock and a disposable needle is attachable to said syringe by screwing said cylindrical connector into said Luer-Lok portion.