DORAWA, KLAUS,SCHWAGER, MANUEL,AESCHLIMANN, MARCEL,SEILER, PHILIP
申请号：
CA2693393
公开号：
CA2693393C
申请日:
2008.07.10
申请国别(地区):
CA
年份:
2012
代理人:
摘要：
An ultrasonic handpiece is used for augmenting a screw. The handpiecescomprise a housing, an ultrasonic convertershiftingly accommodated in the housing, and a sonotrode connected to one endof the ultrasonic converter. The sonotrode protrudesfrom the housing into the screw. An adjusting element is adjustably connectedto the housing. A spring is provided the ends of whichare supported by the ultrasonic converter and the housing, respectively. Theultrasonic converter is preloaded in the direction awayfrom the adjuster wheel by setting the adjusting element, thereby thesonotrode is urged with a selected force into the screw and theaugmentation material is pressed out of the screw and into the bone.
