CPC A61B 17/320068 (2013.01) [A61B 2017/320032 (2013.01); A61B 2017/320089 (2017.08); A61B 2017/320094 (2017.08)] | 17 Claims |
1. A vibration transmitter comprising:
a first rod that extends along a longitudinal axis from a distal end to a proximal end, and includes a fitting hole extending along the longitudinal axis from the distal end toward the proximal end; and
a second rod member that extends along the longitudinal axis, is attached to a distal end portion of the first rod, and includes a fitting portion fitted into the fitting hole in a state where a compressed surface pressure is received from an inner surface of the fitting hole, wherein:
the first rod includes:
a first region in which the fitting portion is fitted into the fitting hole; and
a second region positioned proximal of the first region, and
a crystal grain diameter in the first region of the first rod is larger than a crystal grain diameter in the second region of the first rod.
|