公开(公告)号：US20060286511A1

公开(公告)日：2006-12-21

申请号：US11464350

申请日：2006-08-14

申请人： Vladimir Aleksandrovskiy ,  Alexander Tsyganov

发明人： Vladimir Aleksandrovskiy ,  Alexander Tsyganov

IPC分类号： A61C5/00

CPC分类号： A61C5/026 ,  A61C5/46 ,  A61C5/55

摘要： The method and extractor relate to dentistry and are intended for extraction of metal instruments fragments from a root canal of the tooth, as these instruments may be broken and may get stuck here, for example, during endodontic treatment. According to the invention, two insulated metal electrodes assembled as a cylinder are inserted into the root canal until electric contact with the fragment to be extracted. Then electric current impulse is ran through the circuit formed by the first electrode, metal fragment and second electrode; the intensity and duration of the electric impulse shall be sufficient for welding of the fragment to the electrodes by means of heating at the contact points; this time a heating of the surrounding tissues remains at the physiologically acceptable level; afterwards the electrodes are extracted from the root canal together with the fragment. Depending on a clinical situation, electrodes of various size and configuration are used. Electric impulse is generated by the unit comprising a capacitor chargeable by a battery and dischargeable in pulsed mode via controlled electronic switch. The unit also has an indicator of contact resistance between the fragment and the electrodes for a better alignment of their relative positions.

摘要翻译： 该方法和提取器涉及牙科，并且用于从牙根的根管中提取金属器械碎片，因为这些器具可能被破坏并可能被粘在这里，例如在牙根治疗期间。 根据本发明，将作为圆筒组装的两个绝缘金属电极插入根管中，直到与待提取的片段电接触。 然后电流脉冲通过由第一电极，金属片和第二电极形成的电路; 电脉冲的强度和持续时间应足以通过在接触点的加热将片段焊接到电极上; 这一次周围组织的加热保持在生理上可接受的水平; 之后，电极与片段一起从根管中提取出来。 根据临床情况，使用各种尺寸和结构的电极。 电脉冲由包括可由电池充电并可通过受控电子开关以脉冲模式放电的电容器的单元产生。 该单元还具有片段和电极之间的接触电阻的指示器，以使它们的相对位置更好地对准。