Patent ID: 8518067
Filing Date: 2013-08-27
Classification: A61B

Abstract:
1. An ultrasonic surgical instrument comprising: an ultrasonic vibrator configured to generate ultrasonic vibration; a vibration transmission section configured to transmit the ultrasonic vibration generated in the ultrasonic vibrator; a treatment section formed in a distal end portion of the vibration transmission section, and configured to transmit the ultrasonic vibration from the ultrasonic vibrator to living tissue; a grip member openably or closably provided relative to the treatment section; a pad member provided at a position of the grip member which faces the treatment section; and a planar facing surface disposed on the pad member, and disposed substantially parallel to a longitudinal direction of the treatment section while the grip member is closed, wherein a distal end portion of the treatment section faces the pad member, and is curved from a proximal end portion side of the treatment section toward the distal end portion side of the treatment section in a direction away from the facing surface, and the pad member includes a protruding portion which is disposed on the facing surface, protrudes from the facing surface toward the distal end portion of the treatment section, and abuts on the distal end portion of the treatment section while the grip member is closed.