Patent ID: 7645231

Claim:
An endoscopic fluid supply conduit system suitable for use in an endoscope which comprises: a manipulating head assembly; an insertion tube connected at a fore end of said manipulating head assembly, and a universal cable being connected to and extending downwardly from said manipulating head assembly; a first fluid conduit extended from said manipulating head assembly and through said insertion tube toward an injection port provided on a rigid tip end section at a fore distal end of said insertion tube; a second fluid conduit provided internally of said universal cable and communicable with said first fluid conduit within said manipulating head assembly; a fluid feed port formed at a proximal side of said manipulating head assembly and a mouth piece fixedly fitted in said fluid feed port, said fluid feed port having an axial receptacle bore, a first connection port formed at an inner axial end of said mouth piece for connecting said first fluid conduit in communication with said receptacle bore and a second connection port provided at one side of said mouth piece for connecting said second fluid conduit in communication with said receptacle bore; said first fluid conduit being extended linearly from said axial receptacle bore toward said insertion tube, while said second fluid conduit being inclined with respect to a longitudinal axis of said axial receptacle bore; a fluid supply adaptor having an axially extended fluid supply passage to be attached to a fluid feed member to feed a fluid under pressure to said first fluid conduit, a tip end thereof being opened toward said first connection port and being adapted to be inserted into said mouth piece to block a fluid flow from said second fluid conduit to said first fluid conduit and to feed a fluid from said fluid supply passage to said first fluid conduit; and a plug member fitted in an outer open end of said receptacle bore of said mouth piece after removing said fluid supply adapter from said mouth piece to bring said second connection port into communication with said first connection port through said receptacle bore.