Laser overpower protection device and method for carbon dioxide laser therapeutic instrument

Abstract

The invention relates to a laser overpower protection device for a carbon dioxide laser therapeutic instrument. The control system is used for selecting and controlling the output power and the working mode of the laser and selecting a corresponding protection threshold value according to the output power and the working mode; the acquisition module is used for acquiring the real-time output power of the laser; and the protection system is used for receiving the protection threshold value sent by the control system, comparing the protection threshold value with the real-time output power of the laser device acquired by the acquisition module, and controlling the output of the laser device. According to the invention, a set of special protection system is added in the equipment, the laser output power is divided according to a fixed percentage to be used for monitoring the protection system, and when the laser power is monitored to exceed a set threshold value, the protection system acts to cut off the power supply of the laser in the equipment, so that the effect of rapidly stopping the laser overpower output is achieved.

Description

Technical Field

[0001] The invention relates to a laser overpower protection device and method for a carbon dioxide laser therapeutic apparatus, belonging to the technical field of medical instruments. Background Art

[0002] With the continuous development of laser treatment technology and the gradual improvement of market recognition, the demand for laser treatment equipment is also growing rapidly. Carbon dioxide laser therapy devices are widely used as an effective device for skin beauty and skin growth removal. Due to the inherent characteristics of carbon dioxide laser therapy devices, their laser output has a strong effect on human tissue, so the protection method for its laser over-power output is particularly important. At present, the over-power protection of laser equipment in China is still in the development stage. Summary of the invention

[0003] The technical problem to be solved by the present invention is to achieve the effect of quickly stopping the laser over-power output by adding a set of special protection control systems inside the equipment.

[0004] In order to solve the above technical problems, the present invention provides a technical solution 1: a laser overpower protection device for a carbon dioxide laser therapeutic apparatus, comprising: Lasers; A control system, used to select and control the output power and working mode of the laser, and select a corresponding protection threshold according to the output power and working mode; A collection module, used for collecting the real-time output power of the laser; The protection system is used to receive the protection threshold sent by the control system and compare it with the real-time output power of the laser collected by the collection module to control the output of the laser.

[0005] The beneficial effect brought about by the technical solution 1 of the present invention is: by adding a special protection system inside the equipment, the power of the laser output is divided into a fixed percentage for monitoring the protection system. When the laser power is detected to exceed the set threshold, the protection system will be activated to disconnect the power supply of the laser inside the equipment, so as to achieve the effect of quickly terminating the laser over-power output.

[0006] In order to solve the above technical problems, the present invention provides a second technical solution: a method for protecting a laser overpower of a carbon dioxide laser therapeutic apparatus, which is applied to the laser overpower protection device of the carbon dioxide laser therapeutic apparatus provided in the technical solution 1, comprising: Step 1, turn on the device; Step 2, protection system self-check; Step 3: After the self-test passes, select the laser working mode and output power; Step 4, the control system selects a corresponding protection threshold according to the selected laser working mode and output power, and sends the protection threshold to the protection system; Step 5, the laser starts working; Step 6, acquisition module, collects the real-time output power of the laser; Step 7: The protection system compares the real-time output power of the laser with the protection threshold value to control the output of the laser.

[0007] The beneficial effect brought about by the second technical solution of the present invention is: the laser over-power protection method for the carbon dioxide laser therapy device provided by the present invention can set different over-power action thresholds under different laser power output conditions, and can quickly cut off the laser output when the laser output is over-power, thereby enhancing the inherent safety of the device itself and improving the safety of the device when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a system block diagram of the laser overpower protection device of the carbon dioxide laser therapeutic apparatus of the present invention.

[0009] Figure 2 This is a composition diagram of the protection system of the laser overpower protection device of the carbon dioxide laser therapeutic apparatus of the present invention.

[0010] Figure 3 This is a schematic diagram of the UI interface of the laser overpower protection device of the carbon dioxide laser therapeutic apparatus of the present invention.

[0011] Figure 4 This is a program logic control diagram of the laser overpower protection method of the carbon dioxide laser therapeutic apparatus of the present invention.

[0012] 1-Laser; 2-Control system; 3-Relay; 4-Acquisition module; 5-Protection system; 6-Communication module; 7-Relay control module; 8-Threshold signal transmission module; 9-Over-limit signal acquisition module. DETAILED DESCRIPTION

[0013] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings and specific implementation methods. Embodiment 1

[0014] The present invention provides a laser overpower protection device for a carbon dioxide laser therapeutic apparatus, comprising: Laser 1; The control system 2 is used to select and control the output power and working mode of the laser 1, such as Figure 3 As shown by the arrow in the middle, a corresponding protection threshold is selected according to the output power and the working mode; A collection module 4 is used to collect the real-time output power of the laser 1; The protection system 5 is used to receive the protection threshold signal sent by the control system 2 and control the output power of the laser 1.

[0015] The basic working principle of the carbon dioxide laser therapy device is to control the laser 1 to continuously output laser light, which acts on the affected area through the optical pathway to achieve the purpose of cutting / vaporizing part of human tissue. Figure 3 As shown, in order to adapt to various complex treatment environments, the laser overpower protection device of the carbon dioxide laser therapy instrument proposed in the present invention is also configured with three working modes: continuous, super pulse, and pulse.

[0016] Combine the following Figure 1 As shown, the technical idea of ​​the present invention is exemplarily explained.

[0017] For the control system 2, when the laser 1 is powered normally, the control system 2 controls the power of the laser output by the laser 1 through the control signal. Before working, the control system 2 sends the theoretical protection threshold of the output laser to the protection system 5 through the serial communication, and the protection system 5 enters the protection mode.

[0018] After the protection system 5 enters the protection mode, the theoretical protection threshold is compared with the optical path acquisition value acquired in real time by the acquisition module 4. If the real-time optical path acquisition value is higher than the theoretical protection threshold, the relay 3 is disconnected to interrupt the power supply of the laser 1 and stop the laser output, thus completing the protection process.

[0019] like Figure 2 The protection system 5 in the present invention further includes: a communication module 6 , a relay control module 7 , a threshold signal transmission module 8 , and an over-limit signal acquisition module 9 .

[0020] like Figure 2 As shown, in the protection system 5, the communication module 6 is responsible for communicating with the control system 2 to exchange information such as protection thresholds and alarm signals; the threshold signal transmission module 8 is responsible for converting the protection threshold into a voltage through a DAC and transmitting it to the control system 2. Figure 1 In the acquisition module 4; the limit signal acquisition module 9 is responsible for real-time sampling Figure 1 The over-limit signal returned by the acquisition module 4; the relay control module 7 is responsible for disconnecting Figure 1 The relay 3 in the middle supplies power to the laser 1. Embodiment 2

[0021] The present invention also provides a method for protecting a carbon dioxide laser therapeutic apparatus from laser overpower, which is used in the carbon dioxide laser therapeutic apparatus laser overpower protection device provided in the first embodiment.

[0022] like Figure 4 As shown, the steps of the over-power protection method of the carbon dioxide laser therapeutic apparatus of the present invention are as follows: Step 1: Power on the device.

[0023] Step 2: The protection system performs self-test. If the self-test passes, it proceeds to the next step. The protection system self-test includes short-circuit / open-circuit self-test of the laser power supply relay, zero-position self-test of the laser sampling signal, and communication self-test between the control system and the protection system. Only when all self-tests are normal can the user-operable interface be entered.

[0024] Step 3: After the device completes the self-test, it enters the standby state. Figure 3 As shown, the user selects the laser working mode and laser output power, sets the laser output power to 0.5-40w, and then clicks "Ready", and the device enters the ready-to-work state.

[0025] Step 4: The control system selects the corresponding protection threshold according to the laser working mode and laser output power selected by the user interface, and sends the protection threshold to the protection system. The control system selects the protection threshold based on the laser sampling signal calibration value under all laser working modes and laser output powers for each machine during equipment production calibration. The protection threshold is equivalent to 1.2 times the power set by the interface.

[0026] Step 5: When the protection system enters the protection state, the protection threshold is converted into a voltage value and compared with the laser sampling signal in real time through hardware.

[0027] Step 6: Compare the threshold voltage transmitted by the protection system with the sampling signal of the laser branch optical path sampled by the acquisition module, and output the over-limit signal to the protection system. If the laser sampling signal is less than or equal to the protection threshold, the transmitted over-limit signal is low level; if the laser sampling signal is greater than the protection threshold, the transmitted over-limit signal is high level. The protection system determines whether the laser output power is too high based on the high and low levels of the over-limit signal.

[0028] Step 7: Figure 3 After receiving the high-level over-limit signal, the protection system disconnects the control relay, interrupts the power supply to the laser, and stops the laser output. It also sends an error alarm message to the control system, causing a pop-up window alarm in the control system.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A laser overpower protection device for a carbon dioxide laser therapeutic apparatus, characterized in that: include Lasers; A control system, used to select and control the output power and working mode of the laser, and select a corresponding protection threshold according to the output power and working mode; A collection module, used for collecting the real-time output power of the laser; The protection system is used to receive the protection threshold sent by the control system and compare it with the real-time output power of the laser collected by the collection module to control the output of the laser.

2. The laser overpower protection system for carbon dioxide laser therapy apparatus according to claim 1, characterized in that: The protection system includes a communication module, a relay control module, a threshold signal transmission module, and an over-limit signal acquisition module.

3. A method for protecting a carbon dioxide laser therapeutic apparatus from laser overpower, applied to the carbon dioxide laser therapeutic apparatus laser overpower protection device according to claim 1, characterized in that: include Step 1, turn on the device; Step 2, protection system self-check; Step 3: After the self-test passes, select the laser working mode and output power; Step 4, the control system selects a corresponding protection threshold according to the selected laser working mode and output power, and sends the protection threshold to the protection system; Step 5, the laser starts working; Step 6, acquisition module, collects the real-time output power of the laser; Step 7: The protection system compares the real-time output power of the laser with the protection threshold value to control the output of the laser.

4. The method for protecting the laser from overpower in a carbon dioxide laser therapeutic apparatus according to claim 3, characterized in that: The step 2 includes short circuit / open circuit self-check of the laser power supply relay, zero position self-check of the laser sampling signal, and communication self-check of the control system and the protection system.

5. The method for protecting the laser from overpower in a carbon dioxide laser therapeutic apparatus according to claim 3, characterized in that: The working modes in step 3 include three modes: continuous, super pulse and pulse.

6. The method for protecting laser overpower of a carbon dioxide laser therapeutic apparatus according to claim 3, characterized in that: In step 7, if the real-time output power of the laser is greater than the protection threshold, the protection system cuts off the output power of the laser and sends an alarm message to the control system, triggering an alarm in the control system.

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