| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive injection needle for an endoscope. SOLUTION: An inner tube 2 and needle body 3 of the injection needle for the endoscope consisting of the freely advanceable and retreatable inner and outer tubes 1 and 2, the needle body 3 mounted at the front end of the inner tube 2 and an operation part for operating the advance and retreat of the inner and outer tubes 1 and 2 are connected via a detaining member 14 for filling the clearance between the outside diameter of the needle body 3 and the bore of the inner tube 2, by which the injection needle common to all needle diameters may be obtained. The inner tube 2 of the largest possible bore may be inexpensively manufactured without such a treatment as thermal molding. |
