Patent ID: 8512368
Filing Date: 2013-08-20
Classification: A61B

Abstract:
1. A puncture needle device detachably attached to an ultrasonic endo scope via a pipe sleeve which projects from said ultrasonic endo scope, said pipe sleeve including a non-circular-shaped collar, said puncture needle device comprising: a cylindrical connecting body into which said pipe sleeve is inserted when said puncture needle device is attached to said ultrasonic endoscope, said cylindrical connecting body including an insertion limit portion which comes in contact with said pipe sleeve to prevent said pipe sleeve from being further inserted into said cylindrical connecting body when said pipe sleeve is inserted into said cylindrical connecting body to a predetermined position in an internal space of said cylindrical connecting body; and a non-circular-shaped collar receiving hole which is engaged with said collar and irrotatable relative to said collar when said pipe sleeve is inserted into said cylindrical connecting body to said predetermined position; a flexible sheath which projects outwardly from said cylindrical connecting body through said internal space thereof and is inserted into an internal conduit of said ultrasonic endoscope through the inside of said pipe sleeve when said pipe sleeve is inserted into said internal space of said cylindrical connecting body; a puncture needle inserted into said sheath to be movable therein; and a lock member supported by said cylindrical connecting body to be movable between an unlocked position that allows said pipe sleeve to be inserted into said cylindrical connecting body to said predetermined position and to be removed from said cylindrical connecting body, and a locked position wherein said lock member contacts said collar of said pipe sleeve, that is inserted into said cylindrical connecting body to said predetermined position, to thereby prevent said collar from moving in a removal direction from said cylindrical connecting body.