Treatment instrument, distal side probe unit, and proximal side probe unit

Abstract

A treatment instrument includes: a proximal side probe transmits ultrasonic vibration from its proximal end to its distal end; a distal side probe configured to transmit the ultrasonic vibration from its proximal end to a treatment portion at its distal end; and a holding portion which holds a state where the proximal end of the distal side probe is into collision with the distal end of the proximal side probe, and a state where vibration is transmittable from the proximal end of the proximal side probe to the distal end of the distal side probe.

What is claimed is: 
     
         1 . A distal side probe unit comprising:
 a distal side holding portion which is attachable to and detachable from a proximal side cover in which a proximal side probe is disposed, the proximal side probe defining a first central axis, and transmitting ultrasonic vibration from an ultrasonic transducer from its proximal end to its distal end along the first central axis; and   a distal side probe which is held by the distal side holding portion, which defines a second central axis and which is configured to transmit ultrasonic vibration from its proximal end to a treatment portion at the distal end along the second central axis, wherein   when the distal side holding portion and the proximal side cover are attached to each other, the distal end of the proximal side probe is brought into collision with the proximal end of the distal side probe in a state where the first central axis is aligned with the second central axis;   the distal side probe is configured to transmit the vibration from the ultrasonic transducer from its proximal end to the treatment portion at the distal end in a state where the distal end of the proximal side probe is in collision with the distal side probe; and   the distal side probe is configured to turn or rotate relative to the proximal side probe around the first central axis and the second central axis and directs the treatment portion at the distal end of the distal side probe in a desired direction.   
     
     
         2 . The distal side probe unit according to  claim 1 , wherein the distal side holding portion includes an operation portion which turns or rotates the distal side probe relative to the proximal side probe around the second central axis of the distal side holding portion by an operation to rotate the distal side probe around the second central axis. 
     
     
         3 . A proximal side probe unit comprising:
 a proximal side cover which is attachable to and detachable from a distal side holding portion holding a distal side probe defining a second central axis and being configured to transmit ultrasonic vibration from its proximal end to a treatment portion at the distal end along the second central axis; and   a proximal side probe which is disposed inside the proximal side cover, which defines a first central axis and which transmits ultrasonic vibration from an ultrasonic transducer from its proximal end to its distal end along the first central axis, wherein   when the proximal side cover is attached to the distal side holding portion, the first and second central axes are aligned, and the distal end of the proximal side probe is brought into collision with the proximal end of the distal side probe, the proximal side probe is configured to transmit the vibration from the ultrasonic transducer from its proximal end to the treatment portion at the distal end of the distal side probe in a state where the proximal end of the distal side probe is in collision with the distal end of the proximal side probe; and   the proximal side probe is configured to turn or rotate relative to the distal side probe around the first and second central axes and directs the treatment portion at the distal end of the distal side probe in a desired direction.   
     
     
         4 . The proximal side probe unit according to  claim 3 , further comprising:
 an operation portion which is provided in the proximal side cover and which turns or rotates the proximal side probe relative to the distal side probe around the first central axis of the proximal side cover by an operation to rotate the proximal side probe around the second central axis.