Treatment instrument with vibration generating device

Abstract

The disclosed technology is directed to a treatment instrument having a vibration generating device and a handle for operation. The vibration generating device comprises a housing and a generator including a transducer disposed within the housing. The transducer generates vibration by using electric energy and a first electric contact disposed on the housing. A connector is rotatable about a predetermined rotational axis with respect to the housing of the generator. A coupler is disposed in the connector and having a second electric contact rotatable about the predetermined rotational axis with respect to the first electric contact in a state in which an electric connection of the second electric contact to the first electric contact is maintained. The connector further includes a conductive member forming a part of an electric path of a current that flows based on an operating input at an operating member provided on the handle.

What is claimed is: 
     
         1 . An ultrasonic treatment instrument comprising:
 a handle;   a shaft disposed on a distal end side of the handle;   a transducer disposed within the handle in a rotatable manner around a longitudinal axis of the shaft with respect to the handle together with the shaft;   a rotation connector disposed within the handle on a proximal end side of the handle with respect to the transducer, and configured such that an electrical contact between the rotation connector and the transducer is maintained during a rotation;   a first electric path configured to convey an ultrasonic signal via the rotation connector to the transducer;   a second electric path configured to convey a high frequency signal via the rotation connector to the transducer; and   a third electric path disposed within the handle and configured to convey a high frequency signal to the shaft.   
     
     
         2 . The ultrasonic treatment instrument according to  claim 1 , wherein
 the rotation connector is circumferentially arranged with respect to the longitudinal axis.   
     
     
         3 . The ultrasonic treatment instrument according to  claim 1 , further comprising:
 a rod member connected to the transducer and configured to form a path for conveying an ultrasonic vibration and a high frequency current.   
     
     
         4 . The ultrasonic treatment instrument according to  claim 1 , wherein
 an electric contact that forms the third electric path is disposed in the handle, and the electric contact does not rotate in accordance with the rotation of the transducer.   
     
     
         5 . An ultrasonic treatment system comprising;
 a power supply device;   a handle electrically connected to the power supply device;   a shaft disposed on a distal end side of the handle;   an operating member disposed on the handle, wherein upon an operation entered, a high frequency current and/or an ultrasonic vibration is output from the power supply device;   a transducer disposed within the handle in a rotatable manner around a longitudinal axis of the shaft with respect to the handle together with the shaft;   a rotation connector disposed within the handle on a proximal end side of the handle with respect to the transducer, and configured such that an electrical contact between the rotation connector and the transducer is maintained during a rotation;   a first electric path configured to convey an ultrasonic signal via the rotation connector to the transducer;   a second electric path configured to convey a high frequency signal via the rotation connector to the transducer; and   a third electric path disposed within the handle and configured to convey an input signal of the operating member to the shaft.   
     
     
         6 . The ultrasonic treatment system according to  claim 5 , wherein
 the rotation connector is circumferentially arranged with respect to the longitudinal axis.   
     
     
         7 . The ultrasonic treatment system according to  claim 5 , further comprising:
 a rod member connected to the transducer and configured to form a path for conveying an ultrasonic vibration and a high frequency current.   
     
     
         8 . The ultrasonic treatment instrument according to  claim 5 , wherein an electric contact that forms the third electric path is disposed in the handle, and the electric contact does not rotate in accordance with the rotation of the transducer. 
     
     
         9 . The ultrasonic treatment system according to  claim 5 , wherein
 a fourth electric path is disposed within the handle and configured to convey a high frequency signal to the shaft.   
     
     
         10 . An ultrasonic treatment system comprising:
 a power supply device;   a handle;   a shaft disposed on a distal end side of the handle;   a transducer disposed within the handle in a rotatable manner around a longitudinal axis of the shaft with respect to the handle together with the shaft;   a rotation connector disposed within the handle on a proximal end side of the handle with respect to the transducer, and configured such that an electrical contact between the rotation connector and the transducer is maintained during a rotation;   a first electric path configured to convey an ultrasonic signal via the rotation connector to the transducer;   a second electric path configured to convey a high frequency signal via the rotation connector to the transducer; and   a third electric path disposed within the handle and configured to convey a high frequency signal to the shaft.