State detection system of laser ablation equipment and laser ablation equipment

Abstract

The present invention discloses a state detection system for a laser ablation device and the laser ablation device. The laser ablation device includes a laser system, and the state detection system includes: a detection unit, which includes a voltage sensor for measuring the input voltage of the electro-optical conversion module of the laser system, a current sensor for measuring the output current of the driving module of the laser system, and an efficiency sensor for measuring the electro-optical conversion efficiency of the electro-optical conversion module; a control unit, which can determine whether there is an abnormality in at least one of the electro-optical conversion module, the driving module, and the optical transmission component based on the detection results of the voltage sensor, the current sensor, and the efficiency sensor; and a prompt unit, which is connected to the control unit and is used to provide an abnormality prompt. The state detection system can at least promptly prompt a doctor if there is an abnormality in at least one of the electro-optical conversion module, the driving module, and the optical transmission component.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of medical equipment. More specifically, the present invention relates to a state detection system for a laser ablation device and the laser ablation device. Background Art

[0002] Laser ablation equipment is one of the devices used in minimally invasive surgery. It can implement laser interstitial thermal therapy technology and ablate lesion tissue to achieve the purpose of treatment. Laser ablation equipment includes a laser system and a cooling system. The laser system includes a laser emitter, a drive module, a laser ablation component, and an optical fiber transmission component connecting the laser ablation component and the laser emitter. The laser emitter includes an electro-optical conversion module connected to the drive module. According to historical maintenance data, the electro-optical conversion module, the drive module, and the optical path transmission component composed of the laser ablation component and the optical fiber transmission component are modules that are prone to failure and difficult for doctors to detect in time. If the doctor cannot be helped to detect abnormalities in the electro-optical conversion module, the drive module, and the optical path transmission component in time, the risk of the doctor continuing to use the laser ablation device to treat the patient when the equipment has an abnormality increases, thereby increasing the risk of medical accidents.

[0003] This section is intended to provide background or context for embodiments of the present invention as recited in the claims. The description herein may include concepts that could be explored, but not necessarily concepts that have been previously conceived or explored. Therefore, unless otherwise indicated herein, the material described in this section is not prior art with respect to the specification and claims of this application and is not admitted to be prior art by inclusion in this section. Summary of the Invention

[0004] In order to solve one or more technical problems mentioned above, the present invention provides a state detection system for a laser ablation device and a laser ablation device including the state detection system, which can promptly prompt the doctor whether there is an abnormality in at least one of the electro-optical conversion module, the driving module and the optical path transmission component, thereby reducing the risk of the doctor continuing to use the laser ablation device to treat the patient when an abnormality occurs in the device, and effectively reducing the risk of medical accidents.

[0005] According to a first aspect of the present invention, a state detection system for a laser ablation device is provided. The laser ablation device includes a laser system. The laser system includes a laser emitter, a driver module, and an optical transmission component connected to the laser emitter. The laser emitter includes an electro-optical conversion module connected to the driver module. The state detection system includes: a detection unit comprising a voltage sensor connected to the electro-optical conversion module and configured to measure the input voltage of the electro-optical conversion module, a current sensor connected to the driver module and configured to measure the output current of the driver module, and an efficiency sensor connected to the electro-optical conversion module and configured to measure the electro-optical conversion efficiency of the electro-optical conversion module; a control unit connected to the voltage sensor, current sensor, and efficiency sensor, and capable of determining whether an abnormality exists in at least one of the electro-optical conversion module, the driver module, and the optical transmission component based on the detection results of the voltage sensor, current sensor, and efficiency sensor; and a prompt unit connected to the control unit and configured to at least provide an abnormality prompt.

[0006] According to a second aspect of the present invention, there is provided a laser ablation device comprising the state detection system as described in the first aspect of the present invention.

[0007] Through the state detection system of the laser ablation device provided above and the laser ablation device including the state detection system, the state detection system includes a control unit, a prompt unit and a detection unit with a voltage sensor, a current sensor and an efficiency sensor. The control unit can determine whether there is an abnormality in at least one of the electro-optical conversion module, the drive module and the optical path transmission component based on the detection results of the voltage sensor, the current sensor and the efficiency sensor, and implement a prompt when the control unit determines that there is an abnormality in at least one of the electro-optical conversion module, the drive module and the optical path transmission component, such as displaying or broadcasting that there is an abnormality in at least one of the electro-optical conversion module, the drive module and the optical path transmission component. This can reduce the risk of doctors continuing to use laser ablation equipment to treat patients when an abnormality occurs in the equipment, and effectively reduce the risk of medical accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood by reading the following detailed description with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present invention are shown in an illustrative and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0009] Figure 1 This is a functional block diagram of a laser ablation device according to an embodiment of the present invention;

[0010] Figure 2The laser system and cooling system of the laser ablation device according to an embodiment of the present invention are shown;

[0011] Figure 3 The electro-optical conversion module, heat control module and temperature sensor of the laser ablation device according to the embodiment of the present invention are shown.

[0012] Explanation of the accompanying drawings: 1. Laser system; 11. Laser emitter; 112. Electro-optical conversion module; 113. Thermal control module; 1131. Semiconductor refrigeration chip; 1132. Thermal grease; 1133. Thermal grease; 1134. Thermal insulation gasket; 1135. Heat dissipation fin; 12. Optical fiber transmission component; 13. Laser ablation component; 14. Drive module; 2. Cooling system; 21. Storage box; 22. Drive pump; 23. Supply pipeline; 24. Sealed shell; 25. Return pipeline; 26. Recovery box; 3. Detection unit; 31. Current sensor; 32. Temperature sensor; 33. Voltage sensor; 34. Optical power sensor; 35. Efficiency sensor; 36. End face quality sensor; 37. Flow sensor; 38. Temperature sensor; 4. Control unit; 5. Prompt unit. DETAILED DESCRIPTION

[0013] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are part of the embodiments of the present disclosure, not all of them. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0014] Figure 1 FIG. 1 is a functional block diagram of a laser ablation device according to an embodiment of the present invention. Figure 1 As shown, the laser ablation device includes a laser system 1 for heating and ablating the lesion tissue, a cooling system 2 for maintaining the laser system 1 to stably and safely heat the lesion tissue so that the lesion tissue is ablated within an expected temperature range (e.g., 45-90°C), and a status detection system for detecting whether there is any abnormality in the laser system 1 and / or the cooling system 2.

[0015] like Figure 1 and Figure 2As shown, the laser system 1 includes a laser emitter 11, a driver module 14, and an optical transmission component, wherein the optical transmission component includes a laser ablation component 13 and an optical fiber transmission component 12 connecting the laser ablation component 13 and the laser emitter 11. The laser emitter 11 is capable of generating laser light with the support of electrical energy. The laser light enters the laser ablation component 13 through the optical fiber transmission component 12 and reaches the lesion tissue after exiting the laser ablation component 13, thereby heating and ablating the lesion tissue. The optical fiber transmission component 12 is mainly composed of an optical fiber, while the laser ablation component 13 is mainly composed of an optical fiber and a diffuser head connected thereto for emitting laser light. The laser emitter 11 includes an electro-optical conversion module 112 connected to the driver module 14 and capable of converting electrical energy into optical energy, and a heat control module 113 connected to or adjacent to the electro-optical conversion module 112 for dissipating heat and heating the lesion tissue. The working states of the laser emitter 11 include a preheating state, a transmitting state and a standby state. When the laser emitter 11 is in the preheating state, the heat control module 113 heats the inactive electro-optical conversion module 112 until the temperature of the electro-optical conversion module 112 reaches a suitable working temperature (i.e., a preset temperature range); when the laser emitter 11 is in the transmitting state, the electro-optical conversion module 112 has begun to convert electrical energy into light energy, and the laser emitter 11 has emitted a laser. At this time, the heat control module 113 implements constant temperature control on the electro-optical conversion module 112; when the laser emitter 11 is in the standby state, neither the heat control module 113 nor the electro-optical conversion module 112 is started.

[0016] like Figure 2 As shown, the cooling system 2 primarily comprises a storage tank 21 for storing a cooling medium (e.g., water, oil, or saline solution), a recovery tank 26 for recovering the cooling medium, a sealed housing 24 for accommodating the laser ablation component 13 and capable of being inserted into a patient's body together with or partially inserted into the patient's body, a supply line 23 connecting the storage tank 21 and the sealed housing 24 and having a drive pump 22, and a return line 25 connecting the recovery tank 26 and the sealed housing 24. The sealed housing 24 is at least partially transparent to ensure that the laser can be emitted and reach the lesion tissue. When the drive pump 22 is activated, the cooling medium, guided by the supply line 23, flows from the storage tank 21 into the sealed housing 24 and cools the laser ablation component 13, allowing the laser ablation component 13 to ablate the lesion tissue within the desired temperature range. The cooling medium then flows from the sealed housing 24 into the recovery tank 26, guided by the return line 25.

[0017] like Figure 1As shown, the status detection system includes a detection unit 3, a control unit 4 connected to the detection unit 3, and a prompt unit 5 connected to the control unit 4. The prompt unit 5 includes a display and / or a speaker. The detection unit 3 is used to detect the operating parameters of the laser system 1 and / or the cooling system 2. The control unit 4 can determine whether the laser system 1 and / or the cooling system 2 has an abnormality based on the detection results of the detection unit 3. If an abnormality is determined in the laser system 1 and / or the cooling system 2, the prompt unit 5 will provide a prompt, such as displaying or announcing the abnormality of the laser system 1 and / or the cooling system 2.

[0018] It should be noted that the control unit 4 generally includes a processor (such as a PLC or CPU), memory, and electronic components connected to the processor, etc., which are well known to those skilled in the art and will not be described in detail here. It should be noted that the number of processors, memory, and necessary electronic components is not limited and can be adjusted according to actual needs. For example, if it is necessary to disassemble the control unit 4 into multiple control modules, each of the multiple control modules will perform different tasks of the control unit 4 and, when necessary, communicate and collaborate to complete one or more tasks. For example, the control unit 4 may include a first control module for controlling and inspecting the laser system 1 and a second control module for controlling and inspecting the cooling system 2. The first control module and the second control module communicate and collaborate to complete one or more tasks.

[0019] In this embodiment, if Figure 1 and Figure 2 As shown, the detection unit 3 includes a voltage sensor 33 connected to the electro-optical conversion module 112 and used to measure the input voltage of the electro-optical conversion module 112, a current sensor 31 connected to the driver module 14 and used to measure the output current of the driver module 14, and an efficiency sensor 35 (also known as a photosensor 35) connected to the electro-optical conversion module 112 and used to measure the electro-optical conversion efficiency of the electro-optical conversion module 112. The voltage sensor 33, current sensor 31, and efficiency sensor 35 are all connected to the control unit 4. The control unit 4 can determine whether at least one of the electro-optical conversion module 112, the driver module 14, and the optical transmission component has an abnormality based on the detection results of the voltage sensor 33, current sensor 31, and efficiency sensor 35. When the control unit 4 determines that at least one of the electro-optical conversion module 112, the driver module 14, and the optical transmission component has an abnormality, it will issue a prompt. This can reduce the risk of doctors continuing to use the laser ablation device to treat patients when the device has an abnormality, effectively reducing the risk of medical accidents.

[0020] Exemplarily, the control unit 4 is configured to perform the following operation when the laser emitter 11 is in the emission state: in response to the voltage detected by the voltage sensor 33 being within the expected voltage range, the current detected by the current sensor 31 being within the expected current range, and the power detected by the efficiency sensor 35 being within the expected power range, that is, when the voltage detected by the voltage sensor 33 is within the expected voltage range, the current detected by the current sensor 31 is within the expected current range, and the power detected by the efficiency sensor 35 is within the expected power range, the control unit 4 is configured to determine that the operating states of the electro-optical conversion module 112 and the driver module 14 are normal. Specifically, when the laser emitter 11 is in the emission state, in response to the voltage detected by the voltage sensor 33 being zero and the current detected by the current sensor 31 being zero, that is, when the voltage detected by the voltage sensor 33 is zero and the current detected by the current sensor 31 is zero, the control unit 4 is configured to determine that an abnormality exists in the driver module 14. In this case, the driver module 14 does not input current to the electro-optical conversion module 112, the electro-optical conversion module 112 cannot generate laser light, and the laser ablation component 13 cannot perform ablation. The control unit 4 is configured to respond to the detected current of the current sensor 31 being higher than the expected current range, the detected voltage of the voltage sensor 33 being higher than the expected voltage range, and / or the detected power of the efficiency sensor 35 being higher than the expected power range when the laser emitter 11 is in the emission state, that is, when the detected current of the current sensor 31 is higher than the expected current range, and the detected voltage of the voltage sensor 33 is higher than the expected voltage range, it determines that there is an abnormality in the driving module 14, or when the detected current of the current sensor 31 is higher than the expected current range, and the detected power of the efficiency sensor 35 is higher than the expected power range, it determines that there is an abnormality in the driving module 14, or when the detected current of the current sensor 31 is higher than the expected current range, and the detected voltage of the voltage sensor 33 is higher than the expected voltage range, and the detected power of the efficiency sensor 35 is higher than the expected power range, it determines that there is an abnormality in the driving module 14. At this time, a fault occurs in the driving module 14, causing it to input too much current to the electro-optical conversion module 112, the intensity of the laser generated by the electro-optical conversion module 112 is too high, and the laser ablation component 13 is not suitable for ablation. The control unit 4 is configured to determine that there is an abnormality in the driving module 14 in response to the detected current of the current sensor 31 being higher than a preset minimum starting current (see below for details) but lower than the expected current range, and the detected voltage of the voltage sensor 33 being lower than the expected voltage range and / or the detected power of the efficiency sensor 35 being lower than the expected power range when the laser emitter 11 is in the emission state. At this time, the driving module 14 fails, causing the current input to the electro-optical conversion module 112 to be too small, the intensity of the laser generated by the electro-optical conversion module 112 to be too low, and the laser ablation component 13 to be unsuitable for ablation.The control unit 4 is configured to respond to the detection voltage of the voltage sensor 33 being not equal to zero, the detection current of the current sensor 31 being zero, and the detection power of the efficiency sensor 35 being zero when the laser emitter 11 is in the emission state, that is, when the detection voltage of the voltage sensor 33 is not equal to zero, the detection current of the current sensor 31 is zero, and the detection power of the efficiency sensor 35 is zero, determine that there is an abnormality in the electro-optical conversion module 112. At this time, there is a short circuit inside the electro-optical conversion module 112 (for example, the laser pin is short circuited), the electro-optical conversion module 112 cannot generate laser, and the laser ablation component 13 cannot perform ablation. The control unit 4 is configured to respond to the detection voltage of the voltage sensor 33 being zero, the detection current of the current sensor 31 being within the expected current range, and the detection power of the efficiency sensor 35 being zero when the laser emitter 11 is in the emission state, that is, when the detection voltage of the voltage sensor 33 is zero, the detection current of the current sensor 31 is within the expected current range, and the detection power of the efficiency sensor 35 is zero, determine that there is an abnormality in the electro-optical conversion module 112. At this time, the pins of the electro-optical conversion module 112 are short-circuited or the laser emitter 11 is broken down due to static electricity, the electro-optical conversion module 112 cannot generate laser, and the laser ablation component 13 cannot perform ablation. The control unit 4 is configured to determine, when the laser emitter 11 is in the emission state, that there is an abnormality in the optical transmission component and / or the electro-optical conversion module 112 in response to the voltage detected by the voltage sensor 33 being within the expected voltage range, the current detected by the current sensor 31 being within the expected current range, and the power detected by the efficiency sensor 35 being below the expected power range. In other words, when the voltage detected by the voltage sensor 33 is within the expected voltage range, the current detected by the current sensor 31 is within the expected current range, and the power detected by the efficiency sensor 35 is below the expected power range, the control unit 4 is configured to determine that there is an abnormality in the optical transmission component and / or the electro-optical conversion module 112. In this case, if the electro-optical conversion module 112 fails, for example, if the efficiency of the electro-optical conversion module 112 is reduced, the laser intensity generated by it is too low, and the laser ablation component 13 is not suitable for ablation. If the optical transmission component is abnormal, it may be because the model of the optical transmission component does not match the model required for the laser ablation device. It should be noted that the expected voltage range, expected current range, and expected power range are inherent parameters or design parameters of the laser emitter 11, or are based on these parameters plus or minus an error, the error generally being selected as 10% of the parameter value. For example, the expected voltage range is 4.45V-4.50V, the expected current range is 9.57A-9.63A, and the expected power range is 23.7W-24.0W.

[0021] In a preferred embodiment, the control unit 4 is configured to perform the following operations when the laser emitter 11 is in a preheating state: In response to the voltage detected by the voltage sensor 33 being lower than a preset minimum startup voltage and / or the current detected by the current sensor 31 being lower than a preset minimum startup current, the control unit 4 determines that an abnormality exists in the driver module 14. For example, the abnormality may be an abnormality in the power supply of the driver module 14. The minimum startup voltage is lower than the expected voltage range, and the minimum startup current is lower than the expected current range. It should be noted that the minimum startup voltage and the minimum startup current are inherent parameters or design parameters of the laser emitter 11. For example, the minimum startup voltage is 3.65V-3.70V, and the minimum startup current is 1.05A-1.08A.

[0022] In a preferred embodiment, control unit 4 is configured to determine an optical transmission component abnormality when laser emitter 11 is in an emitting state, in response to the voltage detected by voltage sensor 33 being within an expected voltage range, the current detected by current sensor 31 being within an expected current range, and the power detected by power sensor being above an expected power range. Specifically, when the voltage detected by voltage sensor 33 is within the expected voltage range, the current detected by current sensor 31 is within the expected current range, and the power detected by power sensor is above an expected power range, the control unit 4 determines an optical transmission component abnormality. In this case, some laser light, after passing through the optical transmission component, returns to laser emitter 11 and is captured by efficiency sensor 35, indicating damage to the optical fiber or optical fiber interface within optical fiber transmission component 12, or damage to laser ablation component 13, resulting in the laser intensity output by laser ablation component 13 being too low to meet the energy required for ablation. An optical transmission component abnormality may include operating in an environment not specified for the laser ablation device, such as when the optical transmission component is intended for use in air but mistakenly used in water. Abnormalities in the optical transmission component may also include a mismatch between the model of the optical transmission component and the model required for the laser ablation device, such as the size and / or performance of the optical fiber not meeting the usage requirements specified in the product manual or the surgical plan. Abnormalities in the optical transmission component may also include poor coupling between the laser ablation component 13 and the optical fiber transmission component 12.

[0023] In this embodiment, the detection unit 3 further includes an optical power sensor 34 capable of receiving the laser ablation component 13 or the optical fiber transmission component 12 and measuring the optical power of the light outputted therefrom. The control unit 4 is connected to the optical power sensor 34 and determines whether the laser ablation component 13, the optical fiber transmission component 12, or the laser emitter 11 is abnormal based on the detection result of the optical power sensor 34. For example, when it is necessary to detect the laser ablation component 13, the optical fiber transmission component 12, or the laser emitter 11, the laser ablation component 13 or the optical fiber transmission component 12 is aligned with or inserted into the receiving port of the optical power sensor 34, the laser emitter 11 is started, and the optical power sensor 34 measures the optical power of the light outputted by the laser ablation component 13 or the optical fiber transmission component 12. At this time, the control unit 4 can determine that the laser ablation component 13, the optical fiber transmission component 12, or the laser emitter 11 is abnormal in response to the detected power by the optical power sensor 34 not being within the set power range, or can determine that the operating status of the laser ablation component 13, the optical fiber transmission component 12, or the laser emitter 11 is normal in response to the detected power by the optical power sensor 34 falling within the set power range. The set power range for measuring the laser ablation component 13 and the set power range for measuring the optical fiber transmission component 12 may be the same or different. The corresponding set power ranges can be obtained through experiments or calculations, for example, by performing optical power tests on several qualified laser ablation components 13 or optical fiber transmission components 12, and using the measured minimum and maximum values ​​as the lower and upper limits of the set power range, respectively. Therefore, this embodiment can perform a self-test on the laser emitter 11 before use to determine whether the laser emitter 11 is abnormal. Exemplarily, when performing a self-test on the laser emitter 11, one end of a dedicated detection optical fiber or optical fiber transmission component 12 is connected to the laser emitter 11, and the other end is connected to the optical power sensor 34. The laser emitter 11 is activated, and the optical power sensor 34 measures the optical power of the light output by the dedicated detection optical fiber or optical fiber transmission component 12. At this time, the control unit 4 can determine that the laser emitter 11 is abnormal in response to the power detected by the optical power sensor 34 not falling within the set power range, or determine that the laser emitter 11 is not abnormal in response to the power detected by the optical power sensor 34 falling within the set power range.

[0024] In this embodiment, the detection unit 3 further includes an end-face quality sensor 36 for detecting the end-face quality of the optical fiber transmission component 12 or the laser ablation component 13. The control unit 4 is connected to the end-face quality sensor 36 and is capable of determining whether the optical fiber end-face of the optical fiber transmission component 12 or the laser ablation component 13 is qualified based on the detection results of the end-face quality sensor 36. The end-face quality sensor 36, also known as an end-face detection instrument, is used by connecting each optical fiber interface end within the optical fiber transmission component 12 or the laser ablation component 13 to its detection port. The end-face quality sensor 36 can then confirm the condition of each optical fiber end-face within the optical fiber transmission component 12, such as the presence of defects such as foreign matter, scratches, or shrinkage.

[0025] In this embodiment, the detection unit 3 may further include a temperature sensor 38 and a flow sensor 37. The temperature sensor 38 is preferably a thermocouple or an optical fiber temperature sensor, which is disposed within the cooling system 2 and adjacent to the output end of the laser ablation component 13, so that the temperature sensor 38 can detect the temperature of the cooling medium within the cooling system 2 and / or the temperature of the lesion tissue surrounding the laser ablation component 13. The flow sensor 37 is disposed within the cooling system 2, for example, in the supply line 23 or the return line 25, and is used to detect the flow rate and / or bubbles of the cooling medium within the cooling system 2. The control unit 4 is connected to the temperature sensor 38 and the flow sensor 37, and can determine whether there is any abnormality in the cooling system 2 based on the measurement results of the temperature sensor 38 and the flow sensor 37.

[0026] Exemplarily, the control unit 4 is configured to determine that the operating state of the cooling system 2 is normal in response to the temperature detected by the temperature sensor 38 being at a preset ablation temperature and the flow rate detected by the flow sensor 37 being at a preset cooling flow rate, i.e., when the temperature detected by the temperature sensor 38 is at the preset ablation temperature and the flow rate detected by the flow sensor 37 is at the preset cooling flow rate. The control unit 4 is configured to determine that there is an abnormality in the cooling system 2 in response to the temperature detected by the temperature sensor 38 not being at the preset ablation temperature or the flow rate detected by the flow sensor 37 not being at the preset flow rate, i.e., when the temperature detected by the temperature sensor 38 is not at the preset ablation temperature or the flow rate detected by the flow sensor 37 is not at the preset flow rate. The abnormality in the cooling system 2 may be insufficient cooling capacity, or the temperature of the cooling medium and / or the temperature of the lesion tissue surrounding the laser ablation component 13 not returning to the preset ablation temperature within a predetermined time. It should be noted that the preset ablation temperature and preset cooling flow rate are also product design references and can be obtained by looking up or through testing of qualified products. For example, the measured minimum flow rate and maximum flow rate are used as the lower and upper limits of the preset flow rate, respectively. The preset ablation temperature is (e.g., 45°C-90°C), and the preset cooling flow rate is (e.g., 16 ml / min-18 ml / min). For example, when the flow rate detected by the flow sensor 37 is the same or substantially the same as the set flow rate of the drive pump 22, it is determined that there is no abnormality in the cooling system 2.

[0027] In this embodiment, the detection unit 3 may further include a temperature sensor 32 provided on the electro-optical conversion module 112 and configured to measure the temperature of the electro-optical conversion module 112. The temperature sensor 32 may also be a thermocouple or an optical fiber temperature sensor, and is connected to the control unit 4 so that the control unit 4 can determine whether the heat control module 113 is abnormal based on the measurement result of the temperature sensor 32.

[0028] For example, the control unit 4 is configured to obtain, based on the detection results of the temperature sensor 32 when the laser emitter 11 is in the preheating state, the actual heating time required for the detected temperature of the temperature sensor 32 to reach the set temperature (e.g., 25°C) for the first time, the actual stabilization time required for the detected temperature of the temperature sensor 32 to remain within a preset temperature range (e.g., 24.5°C-25.5°C) for a set number of consecutive times, the maximum real-time temperature of the detected temperature of the temperature sensor 32 occurring within the preheating time (e.g., 0.5 minutes), and the final real-time temperature of the detected temperature of the temperature sensor 32 upon reaching the preheating time. When the laser emitter is in the preheating state, the control unit performs the following operation: in response to the actual heating time being within the preset heating time range (e.g., 0.5 minutes), the actual stabilization time being within the preset stabilization time range (e.g., 0.5 minutes), the maximum real-time temperature not exceeding the preset maximum allowable temperature (e.g., 25°C), and the final real-time temperature being within the preset normal operating temperature range (e.g., 24.5°C-25.5°C), the heat control module 113 is determined to be operating normally. At the same time, the control unit 4 performs the following operations when the laser emitter is in the preheating state: in response to the actual heating time not being within the preset heating time range, it is determined that there is an abnormality in the thermal control module 113; in response to the actual stabilization time not being within the preset stabilization time range, it is determined that there is an abnormality in the thermal control module 113; in response to the maximum real-time temperature exceeding the preset maximum allowable temperature, it is determined that there is an abnormality in the thermal control module 113; and, in response to the final real-time temperature not being within the preset normal operating temperature range, it is determined that there is an abnormality in the thermal control module 113.

[0029] In this embodiment, if Figure 3As shown, the heat control module 113 includes a semiconductor cooling chip 1131, a heat transfer component, and a drive circuit connected to the semiconductor cooling chip. The heat transfer component includes thermal grease 1132 disposed between one side of the semiconductor cooling chip 1131 and the electro-optical conversion module 112, a thermal insulation gasket 1134 disposed between the thermal grease 1132 and the semiconductor cooling chip 1131, thermal grease 1133 disposed on the other side of the semiconductor cooling chip 1131, and heat dissipation fins 1135 disposed on the side of the thermal grease 1133 away from the semiconductor cooling chip 1131. The control unit 4 is configured to control the drive circuit to drive the semiconductor refrigeration chip using a preset maximum safety voltage (e.g., 12V) when determining that an abnormality exists in the heat control module 113, and to perform at least one of the following operations after obtaining the input voltage and input current of the semiconductor refrigeration chip: in response to the input voltage of the semiconductor refrigeration chip being the maximum safety voltage, and the input current of the semiconductor refrigeration chip being the maximum safety current (e.g., 1A), determine that an abnormality exists in the heat transfer component, for example, the abnormality may be due to a gap inside the heat transfer component; in response to the input voltage of the semiconductor refrigeration chip being lower than the preset maximum safety voltage, and / or the input current of the semiconductor refrigeration chip being lower than the maximum safety current, determine that an abnormality exists in the drive circuit; in response to the input voltage of the semiconductor refrigeration chip being the preset maximum safety voltage, and the input current of the semiconductor refrigeration chip being not equal to the maximum safety current, determine that an abnormality exists in the semiconductor refrigeration chip, for example, the semiconductor refrigeration chip is damaged.

[0030] In summary, the laser ablation device can at least promptly alert the doctor that there is an abnormality in at least one of the electro-optical conversion module 112, the drive module 14, and the optical transmission component, thereby reducing the risk of the doctor continuing to use the laser ablation device to treat the patient when the device has an abnormality, and effectively reducing the risk of medical accidents. At the same time, the laser ablation device can complete a self-inspection of the core components before use to ensure that the whole and the parts are operating normally and ensure the safety of use; it can also perform a timely self-inspection during use and quickly find abnormal parts; it can also perform a system self-inspection after use to facilitate system maintenance and repair. The laser ablation device has a self-inspection function, which can quickly confirm whether each core component is normal before surgery to ensure the safety and stability of the operation. The self-inspection function can also quickly confirm the cause and / or location of the problem, shortening the time for fault finding and ensuring the safety of the operation.

[0031] In the above description of this application, unless otherwise expressly specified or limited, terms such as "fixed," "mounted," "connected," or "connected" should be understood in a broad sense. For example, with respect to the term "connected," it can mean a fixed connection, a detachable connection, or an integral connection; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean internal communication between two elements or an interaction between two elements. Therefore, unless otherwise expressly specified in this application, those skilled in the art can understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0032] In addition, the terms "first" or "second" used in this application to refer to numbers or ordinal numbers are used for descriptive purposes only and should not be understood as explicitly or implicitly indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this application, the meaning of "plurality" is at least two, such as two, three or more, etc., unless otherwise clearly and specifically defined.

[0033] Although a number of embodiments of the present invention have been shown and described herein, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Those skilled in the art may devise numerous modifications, variations, and alternatives without departing from the concept and spirit of the present invention. It should be understood that in practicing the present invention, various alternatives to the embodiments of the present invention described herein may be employed. The appended claims are intended to define the scope of the present invention and therefore cover equivalents or alternatives within the scope of these claims.

Claims

1. A state detection system for a laser ablation device, characterized in that: The laser ablation device includes: a laser system; the laser system includes: a laser emitter, a drive module and an optical transmission component connected to the laser emitter; the laser emitter includes: an electro-optical conversion module connected to the drive module; the state detection system includes: A detection unit comprising: a voltage sensor connected to the electro-optical conversion module and used to measure the input voltage of the electro-optical conversion module; a current sensor connected to the driving module and used to measure the output current of the driving module; and an efficiency sensor connected to the electro-optical conversion module and used to measure the electro-optical conversion efficiency of the electro-optical conversion module; a control unit connected to the voltage sensor, the current sensor, and the efficiency sensor, and capable of determining whether there is an abnormality in at least one of the electro-optical conversion module, the driving module, and the optical transmission component based on detection results of the voltage sensor, the current sensor, and the efficiency sensor; and The prompt unit is connected to the control unit and is at least used to implement abnormal prompts.

2. The state detection system according to claim 1, characterized in that: The control unit is configured to perform the following operations when the laser transmitter is in an emission state: In response to the detection voltage of the voltage sensor being within a preset expected voltage range, the detection current of the current sensor being within a preset expected current range, and the detection power of the efficiency sensor being within a preset expected power range, it is determined that the working status of the electro-optical conversion module, the driving module, and the optical path transmission component are normal.

3. The state detection system according to claim 2, characterized in that: The control unit is configured to perform the following operations when the laser emitter is in a preheating state: In response to the detection voltage of the voltage sensor being lower than a preset minimum starting voltage and / or the detection current of the current sensor being lower than a preset minimum starting current, it is determined that an abnormality exists in the driving module, wherein the minimum starting voltage is lower than the expected voltage range and the minimum starting current is lower than the expected current range.

4. The state detection system according to claim 3, characterized in that: The control unit is configured to perform at least one of the following operations when the laser emitter is in an emission state: In response to the voltage detected by the voltage sensor being zero and the current detected by the current sensor being zero, determining that an abnormality exists in the driving module; In response to the current detected by the current sensor being higher than an expected current range, the voltage detected by the voltage sensor being higher than an expected voltage range, and / or the power detected by the efficiency sensor being higher than an expected power range, determining that the driving module is abnormal; In response to the current detected by the current sensor being higher than the minimum starting current but lower than the expected current range, the voltage detected by the voltage sensor being lower than the expected voltage range and / or the power detected by the efficiency sensor being lower than the expected power range, it is determined that the driving module is abnormal.

5. The state detection system according to claim 2, characterized in that: The control unit is configured to perform at least one of the following operations when the laser emitter is in an emission state: In response to the detected voltage of the voltage sensor being not equal to zero, the detected current of the current sensor being zero, and the detected power of the efficiency sensor being zero, determining that an abnormality exists in the electro-optical conversion module; In response to the detected voltage of the voltage sensor being zero, the detected current of the current sensor being within an expected current range, and the detected power of the efficiency sensor being zero, determining that an abnormality exists in the electro-optical conversion module; In response to the detection voltage of the voltage sensor being within the expected voltage range, the detection current of the current sensor being within the expected current range, and the detection power of the efficiency sensor being lower than the expected power range, it is determined that there is an abnormality in the electro-optical conversion module and / or the optical path transmission component.

6. The state detection system according to claim 5, characterized in that The optical transmission component has an abnormality including at least one of the following: The working environment of the optical transmission component is not the working environment specified for the laser ablation device; and The model of the optical path transmission component does not match the model required for the laser ablation equipment.

7. The state detection system according to claim 3, characterized in that: The control unit is configured to perform the following operations when the laser emitter is in an emitting state: in response to the detection voltage of the voltage sensor being within an expected voltage range, the detection current of the current sensor being within an expected current range, and the detection power of the efficiency sensor being higher than an expected power range, determine that there is an abnormality in the optical path transmission component.

8. The state detection system according to claim 1, characterized in that: The laser system further includes a heat control module for heat dissipation for the electro-optical conversion module; The detection unit further includes a temperature sensor connected to the electro-optical conversion module and configured to measure the temperature of the electro-optical conversion module; The control unit is connected to a temperature sensor and determines whether the heat control module has an abnormality according to a measurement result of the temperature sensor.

9. The state detection system according to claim 8, characterized in that: The control unit is configured to perform the following operations when the laser emitter is in a preheating state: Based on the detection result of the temperature sensor, the following is obtained: The actual heating time required for the detected temperature of the temperature sensor to reach the set temperature for the first time; The actual stabilization time required for the detected temperature of the temperature sensor to be within the preset temperature range for a set number of consecutive times; The maximum real-time temperature detected by the temperature sensor within the set preheating time; and / or The temperature detected by the temperature sensor is the final real-time temperature when the preheating time is reached.

10. The state detection system according to claim 9, characterized in that: The control unit is configured to perform the following operations when the laser transmitter is in a preheating state: In response to the actual heating time being within a preset heating time range, the actual stabilization time being within a preset stabilization time range, the maximum real-time temperature not exceeding a preset maximum allowable temperature, and the final real-time temperature being within a preset normal operating temperature range, it is determined that the operating state of the thermal control module is normal.

11. The state detection system according to claim 10, characterized in that: The control unit is configured to perform the following operations when the laser transmitter is in a preheating state: In response to the actual heating time not being within the preset heating time range and / or the actual stabilization time not being within the preset stabilization time range and / or the maximum real-time temperature exceeding the maximum allowable temperature and / or the final real-time temperature not being within the preset normal operating temperature range, it is determined that an abnormality exists in the thermal control module.

12. The state detection system according to claim 11, characterized in that: The heat control module includes a semiconductor refrigeration chip, a heat transfer component, and a drive circuit connected to the semiconductor refrigeration chip. When the control unit determines that the heat control module is abnormal, the control unit controls the drive circuit to drive the semiconductor refrigeration chip using a preset maximum safety voltage, and performs at least one of the following operations after obtaining the input voltage and input current of the semiconductor refrigeration chip: In response to the input voltage of the semiconductor refrigeration chip being a preset maximum safety voltage and the input current of the semiconductor refrigeration chip being a maximum safety current, determining that the heat transfer component is abnormal; In response to an input voltage of the semiconductor refrigeration chip being lower than a preset maximum safety voltage, and / or an input current of the semiconductor refrigeration chip being lower than a maximum safety current, determining that an abnormality exists in the driving circuit; In response to the input voltage of the semiconductor refrigeration chip being a preset maximum safety voltage and the input current of the semiconductor refrigeration chip being not equal to the maximum safety current, it is determined that the semiconductor refrigeration chip is abnormal.

13. The status detection system according to claim 8, characterized in that: The temperature sensor is a thermocouple or an optical fiber temperature sensor.

14. The state detection system according to any one of claims 1 to 7, characterized in that: The prompting unit includes a display and / or a speaker.

15. A laser ablation device, characterized in that: The device comprises a status detection system as claimed in any one of claims 1 to 12.

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