| 摘要 |
A wireless dental apex locator ( 10 ) for use in determining the location of the apex of a patient's root, includes an electronic module ( 13 ) having a battery power source ( 13 a), an impedance analyzer circuit ( 13 b) and a radio frequency transmitter ( 13 c); a grounding module ( 12 ) having a clip ( 15 ) for grounding the patient; a probe module ( 14 ) having an endodontic probe ( 21 ); and an associated but not physically connected display unit ( 11 ) having a receiver ( 31 ) for receiving radio frequency signals from the transmitter ( 13 c). The display unit ( 11 ) has an electronic circuit that conditions the signals and interprets the signal for display on a graphic display ( 31 ).
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