US 11,701,138 B2
Vibration transmitter and ultrasonic treatment device
Yasuhiro Maeda, Hachioji (JP); Yukihiko Shimamura, Yoshikawa (JP); and Masashi Yamada, Sagamihara (JP)
Assigned to OLYMPUS CORPORATION, Tokyo (JP)
Filed by OLYMPUS CORPORATION, Tokyo (JP)
Filed on Jun. 12, 2020, as Appl. No. 16/900,269.
Application 16/900,269 is a continuation of application No. PCT/JP2017/044940, filed on Dec. 14, 2017.
Prior Publication US 2020/0305923 A1, Oct. 1, 2020
Int. Cl. A61B 17/00 (2006.01); A61B 17/32 (2006.01)
CPC A61B 17/320068 (2013.01) [A61B 2017/320032 (2013.01); A61B 2017/320089 (2017.08); A61B 2017/320094 (2017.08)] 17 Claims
OG exemplary drawing
 
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.