JPS6319048Y2 - - Google Patents

Description

[Detailed description of the invention] The present application relates to a dental treatment device that performs dental treatment using laser light, and in particular, when the tip of the guide piece that sets the laser light irradiation position, that is, the laser light focusing position, is separated from the teeth or gums. This prevents unexpected damage to areas other than the treated area by stopping the function of the laser generator, allowing safe dental treatment.

BACKGROUND ART In recent years, in the field of dental treatment, there has been a tendency for dental treatment using laser light to be widely implemented, and a laser handpiece is used as a treatment instrument. This laser handpiece is equipped with a lens system inside its cylindrical body, which focuses the laser light from the laser light generator and guides it through the optical path inside the handpiece body to the tip. The radiation beam is configured to be able to accurately irradiate the affected area via a guide piece for setting the irradiation position that extends forward from the tip of the piece. The laser beam generator also includes a laser oscillator that is controlled by a control circuit. For example, when the laser beam generator is activated by a foot switch, a predetermined amount of laser beam is generated from the laser oscillator, and this is transmitted to the laser handpiece. It is designed to lead to

In the present application, the dental treatment device configured as described above is configured to turn off the control circuit and stop the oscillation of laser light from the laser oscillator when the tip of the guide piece leaves the treated area. To describe the embodiment in detail with reference to the drawings, A is a laser handpiece configured to condense a laser beam inside a cylindrical body 1 with a lens system and guide it out from its tip. A recess 2 is formed at the tip, and a through hole 3 communicating with the recess 2 is formed along the axial direction, and a support electrode 5 is removably fitted into the recess 2 via an insulating material 4. A lead wire 6 is inserted through the through hole 3, and a guide piece 7 for setting the irradiation position extends from the tip of the support electrode 5. This guide piece 7 is made of a rod-shaped conductive material and constitutes a touch sensor. B is a laser generator that supplies laser light to the laser handpiece A, and the laser generator B has an output terminal b that outputs a high voltage from the laser power source E when a high potential signal is input to the signal input terminal a. The laser oscillator 9 is connected to the output end b of the control circuit 8 and oscillates a laser beam when the laser power is input. It is connected to the laser handpiece A via a light guide 10. 11 is a touch switch circuit whose input end is connected to the guide piece 7 via the support electrode 5;
For example, when the guide piece 7 comes into contact with a tooth or the like using a C-MOS type transistor, a voltage is generated through the lead wire 6. The output terminal of this touch switch circuit 11 is connected to one input terminal of a gate circuit 12 consisting of an AND circuit. The other input terminal of the gate circuit 12 is connected to an operation switch 13 consisting of a foot switch that outputs a high potential signal when the pedal is pressed, and the signal output terminal of the gate circuit 12 is connected to the signal input terminal of the control circuit 8. Connected to a.

With the operation switch 13 maintaining a high potential due to the pedal pressure, the tip of the guide piece 7 is brought into contact with the affected part of the tooth or the like. Then, the irradiation position of the laser beam is set, and the output terminal of the touch switch circuit 11 becomes a high potential.Therefore, the output of the gate circuit 12 changes from a low potential to a high potential, and this high potential signal causes the control circuit 8 Then, the laser oscillator is activated and laser light is generated from the laser generator B, which is supplied to the laser handpiece A and irradiated onto the affected area. In this state, for example, when the tip of the guide piece 7 is removed from the affected area in order to temporarily interrupt the laser beam treatment, the output of the touch switch circuit 11 changes from a high potential to a low potential.
Laser oscillation from laser generator B stops.

Therefore, according to the present application, when the tip of the guide piece is removed from the affected area while the operating switch is in operation, the laser beam irradiation immediately stops, thereby preventing unexpected damage caused by the laser beam and providing safe dental treatment. It is extremely convenient for treatment work because it eliminates the trouble of having to repeat the operation every time the laser beam is stopped, and it also has the advantage of being able to freely select the angle of irradiation of the laser beam to the affected area.

[Brief explanation of the drawing]

The drawing is a block diagram of a laser beam generator showing an embodiment of the present application. In the figure, 4 is an insulating material, 7 is a guide piece, 8 is a control circuit, 9 is a laser oscillator, 11 is a touch switch circuit, 13 is an operation switch, and A is a laser handpiece.

Claims (1)

[Scope of utility model registration request] The oscillation of the laser beam is controlled by a control circuit in a laser handpiece consisting of a guide piece made of a conductive material that extends from the tip in the laser irradiation direction and sets the laser beam irradiation position through an insulating rod. A laser oscillator is connected to the control circuit, and a touch switch and an operation switch are connected to the laser oscillator to output a detection signal in response to a contact signal from the guide piece. 1. A dental treatment device using a laser beam, characterized in that the device is configured to control the operation of the laser beam.