Dual function piezoelectric device

Abstract

A piezoelectric device comprising:(a) a handpiece for holding by a user;(b) a cutting insert for said handpiece;(c) an ultrasound transducer disposed within the handpiece, the ultrasound transducer capable of providing first and second ultrasound frequency vibrations to the cutting insert in response to an electrical signal; and(d) a switch allowing the user to control the electrical signal and thereby provide either said first or second ultrasound frequency vibrations to the cutting insert.The device is useful in a method of placing an implant into an implant site comprising cutting overlying gingival tissue at a first ultrasound frequency capable of cutting soft tissue, then switching to a second ultrasound frequency capable of cutting the underlying jawbone.

What is claimed is: 
     
         1 . A piezoelectric device comprising:
 (a) a handpiece for holding by a user;   (b) a cutting insert for said handpiece;   (c) an ultrasound transducer disposed within the handpiece, the ultrasound transducer configured to provide first and second ultrasound frequency vibrations to the cutting insert in response to an electrical signal, wherein the first ultrasound frequency vibration cuts soft tissue, and wherein the second ultrasound frequency vibration cuts bone; and   (d) a switch allowing the user to control the electrical signal so that the user by manipulating the switch may only select to provide either said first or second ultrasound frequency vibrations to the cutting insert.   
     
     
         2 . The device according to  claim 1 , wherein the first ultrasound frequency vibration is 50-60 kHz. 
     
     
         3 . The device according to  claim 1 , wherein the second ultrasound frequency vibration is 20-30 kHz. 
     
     
         4 . The device according to  claim 1 , wherein the switch is a toggle switch. 
     
     
         5 . A piezoelectric device comprising:
 (a) a handpiece for holding by a user;   (b) at least one cutting insert for said handpiece;   (c) an ultrasound transducer disposed within the handpiece, the ultrasound transducer configured to provide first and second ultrasound frequency vibrations to the cutting insert in response to an electrical signal, the first ultrasound frequency vibration being 50-60 kHz, and the second ultrasound frequency vibration being 20-30 kHz; and   (d) a switch on the handpiece allowing the user to control the electrical signal so that the user by manipulating the switch may only select to provide either said first or second ultrasound frequency vibrations to the cutting insert.   
     
     
         6 . The device according to  claim 5 , wherein the switch is a toggle switch.