Patent ID: 6572589
Filing Date: 2003-06-03
Classification: A61M

Abstract:
A device for mounting cartridge receiving barrel in a cartridge type dental injection device comprising a mounting member having a socket defined thereby, a barrel adapted to be inserted in the socket and having diametrically opposite viewing windows formed therein, said mounting member having a plurality of circumferentially spaced apart ball retaining holes, and a locking ball placed in each of said holes, said barrel being provided with an annular groove adapted to receive a portion of each locking ball therein, and a locking ring having an annular cam surface and a relieving surface positioned adjacent to each other and movable between a position where when said locking balls are in alignment with said annular groove, said annular cam surface pushes said locking balls toward said annular groove to bring portions of said locking balls into engagement with said annular groove and a position where said relieving surface faces said locking balls to release them from said annular groove.