Ultrasonic probe and ultrasonic probe unit for arthroscopic surgery

Abstract

An ultrasonic probe for arthroscopic surgery includes: a bend extending portion which is provided on a distal side of a probe main body and which extends to bend to a side of a second intersecting direction of the probe main body, when a certain direction intersecting the longitudinal axis is a first intersecting direction and a direction opposite to the first intersecting direction is a second intersecting direction; and a treatment portion which is provided on the distal side of the bend extending portion and which is configured to treat a treatment target.

1 - 11 . (canceled) 
     
     
         12 . An ultrasonic probe for arthroscopic surgery which is for use in an operation of a joint and which is configured to transmit ultrasonic vibration from a proximal side to a distal side thereof, the ultrasonic probe comprising:
 a probe main body which extends from the proximal side to the distal side along a linear longitudinal axis and to which an ultrasonic transducer to generate the ultrasonic vibration is connected to the proximal side;   a bend extending portion which is provided on the distal side of the probe main body and which extends to bend to a side of a second intersecting direction of the probe main body, when a certain direction intersecting the longitudinal axis is a first intersecting direction and a direction opposite to the first intersecting direction is the second intersecting direction; and   a treatment portion which is provided on the distal side of the bend extending portion and which is configured to treat a treatment target,   wherein the bend extending portion includes:   a first extending surface directed to a side of the first intersecting direction;   a second extending surface directed to a side of the second intersecting direction;   a third extending surface directed to a side of a first width direction, when two directions intersecting the longitudinal axis and being vertical to the first intersecting direction and the second intersecting direction are defined as the first width direction and a second width direction; and   a fourth extending surface directed to a side of the second width direction, and   the treatment portion includes:   a first continuous surface continuous with the first extending surface;   a second continuous surface which is continuous with the second extending surface and in which grooves to cut the treatment target are formed;   a first extending end face which is continuous with the third extending surface and in which first concave portions to cut the treatment target are formed; and   a second extending end face which is continuous with the fourth extending surface and in which second concave portions to cut the treatment target are formed.   
     
     
         13 . The ultrasonic probe of  claim 12 , further comprising a narrowing portion between the probe main body and the bend extending portion,
 wherein the narrowing portion includes:
 a first narrowing outer surface which is directed to a side of the first intersecting direction and in which a first distance from the longitudinal axis in the first intersecting direction decreases from the proximal side toward the distal side; 
 a first relay surface which is directed to the first intersecting direction side, continuous with a region between the first narrowing outer surface and the first extending surface in a direction along the longitudinal axis, and extends in parallel with the longitudinal axis; 
 a second narrowing outer surface which is directed to the second intersecting direction side and in which a second distance from the longitudinal axis in the second intersecting direction decreases from the proximal side toward the distal side; and 
 a second relay surface which is directed to a side of the second intersecting direction, continuous with a region between the second narrowing outer surface and the second extending surface in the direction along the longitudinal axis, and extends in parallel with the longitudinal axis. 
   
     
     
         14 . The ultrasonic probe of  claim 13 , wherein a boundary position between the first narrowing outer surface and the first relay surface and a boundary position between the second narrowing outer surface and the second relay surface are mutually different positions along the longitudinal axis. 
     
     
         15 . The ultrasonic probe of  claim 14 , wherein the boundary position between the first narrowing outer surface and the first relay surface is positioned closer to the proximal side in the direction along the longitudinal axis than the boundary position between the second narrowing outer surface and the second relay surface. 
     
     
         16 . The ultrasonic probe of  claim 13 , wherein:
 a boundary position between the probe main body and the first narrowing outer surface is positioned closer to the proximal side in the direction along the longitudinal axis than a boundary position between the probe main body and the second narrowing outer surface, and   the boundary position between the first narrowing outer surface and the first relay surface is positioned closer to the distal side in the direction along the longitudinal axis than the boundary position between the second narrowing outer surface and the second relay surface.   
     
     
         17 . The ultrasonic probe of  claim 12 , wherein the grooves are continuous with the first concave portions and the second concave portions. 
     
     
         18 . A vibrating body unit comprising:
 the ultrasonic probe according to  claim 12 ; and   an ultrasonic transducer connected to the ultrasonic probe.