Apex locator
AssigneeGooddoctors Co., Ltd.
InventorYoung Woon Kim
Life of this patent
Estimating the term…
Abstract
The present invention provides a root canal length measuring device including: a measuring module configured to include a file hook electrically connected to an endodontic file, and a lip hook to be connected to a lip or a gum; a control module configured to measure the value of impedance which varies as the file moves from the surface of a tooth toward the apex of the root of the tooth, and provide an image signal or a sound signal representing information on the position of the apex of the root and information on the length of the apex of the root; and a communication module configured to receive the image signal or the sound signal from the control module, and wirelessly transmit the received signal to a smart device in real time.
Claims10
A root canal length measuring device comprising:
- a measuring module configured to include a file hook which is electrically connected to an endodontic file for removing dental pulps from root canals and enlarging root canals, a lip hook which is configured to be connected to a lip or a gum serving as a ground, and a cable and a connector to which the file hook and the lip hook are connected;
- a control module configured to measure the value of impedance which varies as the endodontic file moves from the surface of a tooth toward the apex of the root of the tooth, and provide a signal representing information on the position of the apex of the root of the tooth and information on the length of the apex of the root of the tooth;
- a near field communication module configured to receive the signal representing the information on the position of the apex of the root of the tooth and the information on the length of the apex of the root of the tooth calculated by the control module, from the control module, and wirelessly transmit the received signal to a smart device in real time;
- a case accommodating the control module and the near field communication module and having a display on a front surface and a connecting hole for establishing a connection with the measuring module;
- a mounting unit of which one end portion is hinged on a rear surface of the case and the other end portion has a straight protrusion protruding toward the rear surface of the case and is movable with respect to the rear surface of the case;
- an elastic connecting member installed between the one end portion of the mounting unit and the case for urging the straight protrusion of the mounting unit toward the case by an elastic force when the straight protrusion of the mounting unit is moved away from the case;
- and
- a dental ruler which has a straight hole and is configured to be worn on a finger of a user like a ring in order to measure the length of the endodontic file,
- wherein the mounting unit is mounted on a portion of the dental ruler, and
- wherein the dental ruler is disposed between the case and the other end portion of the mounting unit, and the straight protrusion of the mounting unit is inserted into the straight hole of the dental ruler to contact the rear surface of the case in a state that the mounting unit is mounted on the dental ruler.
Dependencies are inferred from the claim text.