Laser therapeutic apparatus

Abstract

The invention discloses a laser therapeutic apparatus. A circuit part of the laser therapeutic apparatus mainly comprises a power supply, a controller, a human-machine interface and a laser output circuit, wherein the human-machine interface and the laser output circuit are connected with the controller, the laser output circuit is provided with a laser head, and the controller comprises a time control module, a curve database module, an output curve construction module, a duty cycle calculation module and a pulse width modulation module. The laser therapeutic apparatus controls a laser poweroutput curve by adopting a pulse width modulation mode so as to realize automatic output of the laser power curve, avoids discomfort caused by suddenly increasing of laser output power during therapy,enables the therapy to be safer and generates better therapeutic efficacy.

Description

technical field [0001] The invention relates to the field of laser therapy, in particular to a laser therapy instrument. Background technique [0002] In recent years, with the application of lasers in the medical field, laser therapy instruments for nasal cavity irradiation and acupoint irradiation of the human body have also emerged as the times require. Currently, the laser therapeutic apparatus on the market is mainly composed of a main body and a laser therapeutic head. The laser therapeutic apparatus is controlled by a microprocessor, and its circuit system includes a power control circuit. , Power detection circuit, charging circuit, LCD display control circuit, man-machine interface, MCU main control circuit, power supply detection module, laser power control circuit and laser power detection feedback circuit. The laser power control circuit of this scheme is mainly composed of potentiometers VR1~VR3 and transistor Q2 connected to the two I / O ports of the MCU. [0...

AI Technical Summary

Problems solved by technology

It can be seen that this power control method must have the following deficiencies: First, the resistance value of the potentiometer is adjusted manually, so that it is impossible to guarantee the change range of the laser output power each time. The power level on the LCD display is used to understand the power change, which requires frequent adjustment of the potentiometer to make the laser output power reach the ideal value, which is very inconvenient to use

Secondly, when the user wants to change the laser output power during use, it is easy to cause the laser output power to suddenly increase due to the too fast switching of the potentiometer, which can easily cause discomfort to the user.

Furthermore, the sensitivity of the potentiometer itself will also affect the output power of the laser. Even if the user adjusts the potentiometer slowly, the change of the laser output power is difficult to form a smooth continuous change curve, the accuracy is low, and the treatment effect is affected.

In addition, the common laser treatment instrument can only know the power level after installing a photodiode on the main unit to test the optical power. In this way, it is not only impossible to know the laser treatment power at the same time as the treatment, but also it is very likely to introduce interference and reduce the power display. Accuracy

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