RECEIVING TUBE MOUNTING DEVICE OF CARTRIDGE TYPE INJECTION DEVICE FOR DENTAL USE

摘要

A receiving tube mounting device of cartridge type injection device for dent al use, capable of attaching and detaching a receiving tube having a cartridge charged therein easily and rapidly to and from a receiving port of the injection device and capable of varying the directions of a receiving tube sight window and an injection needle cut surface easily as desired; the injection device comprising the receiving tube (9) formed so as to be insert ed into the receiving port (5) of an installation member (5a) and having sight windows (11) provided in radial direction opposedly to each other; the installation member (5) having a plurality of ball holding holes (7) spaced at a distance in circumferential direction and locking balls (8) positioned in the ball holding holes; the receiving tube (9) having an annular groove (12) receiving a part of the locking balls (8), and a locking ring (13) having an annular cam surface (14) and a flank (15) adjacent to each other, and, when the locking balls (8) are aligned with the annular groove (12), capable of being moved between a position where the annular cam surface (14) pushes the locking balls (8) toward the annular groove (12) and a position where the flank (15) is opposed to the locking balls (8) to release the locking balls (8) from the annular groove (12).