Temperature control method for reducing thermal injury, storage medium, energy output equipment and surgical operation system

Abstract

The invention relates to the technical field of medical instruments, and discloses a temperature control method for reducing thermal damage, a storage medium, energy output equipment and a surgical operating system, the method is applied to the energy output equipment in the surgical operating system, and the surgical operating system further comprises ultrasonic equipment. The method comprises the following steps: determining a starting temperature corresponding to a starting moment and an ending temperature corresponding to an ending moment of ultrasonic equipment in each sampling period; determining a temperature difference corresponding to each sampling period according to each starting temperature and each ending temperature; determining a temperature change slope corresponding to the current operation moment based on each temperature difference; and when the temperature change slope is higher than a preset temperature change slope threshold value, the output power transmitted to the ultrasonic equipment is reduced, so that the current temperature of the ultrasonic equipment is reduced. According to the invention, thermal damage caused by too fast temperature rise can be prevented.

Description

Technical Field

[0001] The present application relates to the field of medical device technology, and in particular to a temperature control method, storage medium, energy output device and surgical operation system for reducing thermal damage. Background Art

[0002] At present, ultrasonic scalpel, a medical device that uses the principle of ultrasound for surgical cutting, has been widely used in the medical field due to its advantages such as being non-invasive and radiation-free.

[0003] Among them, the energy host, as an energy output device, can generate resonant frequency and voltage to transmit to the transducer. The transducer converts the generated energy into mechanical vibration of the ultrasonic device (i.e., ultrasonic knife), thereby completing the tissue cutting of the surgical site. The high-frequency vibration of the ultrasonic device can generate heat in the surgical area, causing the tissue temperature in the surgical area to rise rapidly. Too fast a temperature rise may cause the temperature to be too high in a short period of time, which in turn causes thermal damage to the tissue in the surgical area. Therefore, how to prevent the temperature from rising too fast and causing thermal damage is an urgent problem to be solved. Summary of the invention

[0004] The main purpose of this application is to provide a temperature control method, storage medium, energy output device and surgical operation system for reducing thermal damage, aiming to solve the existing technical problem of how to prevent thermal damage caused by excessive temperature rise.

[0005] To achieve the above-mentioned object, the present application provides a temperature control method for reducing thermal damage, the method is applied to an energy output device in a surgical operating system, the surgical operating system also includes an ultrasonic device, the energy output device is connected to the ultrasonic device, and the method includes:

[0006] Determine the starting temperature corresponding to the starting time and the ending temperature corresponding to the ending time of the ultrasonic device in each sampling period;

[0007] Determine the temperature difference corresponding to each sampling period according to each starting temperature and each ending temperature;

[0008] Determine the temperature change slope corresponding to the current operating moment based on each of the temperature differences;

[0009] When the temperature change slope is higher than a preset temperature change slope threshold, the output power transmitted to the ultrasonic device is reduced to reduce the current temperature of the ultrasonic device.

[0010] In one embodiment, the step of determining the starting temperature corresponding to the starting time and the ending temperature corresponding to the ending time of the ultrasound device in each sampling period includes:

[0011] Acquire a starting resonance frequency received by the ultrasonic device at a starting moment and an ending resonance frequency received at an ending moment in each sampling period;

[0012] Determining the starting temperature corresponding to each starting moment according to each starting resonant frequency by using a preset fitting relationship;

[0013] The end temperature corresponding to each end time is determined according to each end resonant frequency by using the preset fitting relationship.

[0014] In one embodiment, before the step of obtaining the starting resonance frequency received by the ultrasound device at the starting time and the ending resonance frequency received at the ending time in each sampling period, the method further includes:

[0015] When the ultrasonic device is in a preset test environment, obtaining a test resonant frequency corresponding to the ultrasonic device at each test temperature;

[0016] Fitting is performed on each of the test temperatures and each of the test resonant frequencies to obtain a preset fitting relationship.

[0017] In one embodiment, after the step of reducing the output power transmitted to the ultrasonic device when the temperature change slope is higher than a preset temperature change slope threshold, the method further includes:

[0018] Determine the current temperature of the ultrasonic device according to the starting resonant frequency and the ending resonant frequency in the current sampling period;

[0019] Determining whether the current temperature is within a preset normal temperature range;

[0020] When the current temperature is within the preset normal temperature range, the output power transmitted to the ultrasonic device is gradually adjusted to a target output power threshold.

[0021] In one embodiment, after the step of determining the starting temperature corresponding to the starting time and the ending temperature corresponding to the ending time of the ultrasonic device in each sampling period, the method further includes:

[0022] Determining the current impedance of the ultrasound device in each of the sampling periods, and determining the impedance change slope according to each of the current impedances;

[0023] The step of determining whether the current temperature is within a preset normal temperature range comprises:

[0024] When the impedance change slope is not higher than a preset impedance change slope threshold, it is determined whether the current temperature is within a preset normal temperature range.

[0025] In one embodiment, before the step of determining the starting temperature corresponding to the starting time and the ending temperature corresponding to the ending time of the ultrasonic device in each sampling period, the step further includes:

[0026] When the ultrasonic device is in a preset test environment, obtaining the test impedance corresponding to the ultrasonic device at each test temperature;

[0027] A preset impedance change slope threshold is determined according to each of the test impedances.

[0028] In one embodiment, the step of obtaining the starting resonant frequency received by the ultrasound device at the starting time and the ending resonant frequency received at the ending time in each sampling period includes:

[0029] When power-on is detected, a self-check operation is performed and the target impedance point is determined according to the operation;

[0030] Determining a target resonant frequency based on the target impedance point;

[0031] The target resonant frequency is used as a starting sampling point to obtain a starting resonant frequency received by the ultrasonic device at a starting moment and an ending resonant frequency received at an ending moment in each sampling period.

[0032] In addition, to achieve the above-mentioned purpose, the present application also proposes a storage medium, on which is stored a temperature control program for reducing thermal damage. When the temperature control program for reducing thermal damage is executed by a processor, the steps of the temperature control method for reducing thermal damage as described above are implemented.

[0033] In addition, to achieve the above-mentioned purpose, the present application also proposes an energy output device, which includes: a memory, a processor, and a temperature control program for reducing thermal damage stored in the memory and executable on the processor, wherein the temperature control program for reducing thermal damage is configured to implement the steps of the temperature control method for reducing thermal damage as described above.

[0034] In addition, to achieve the above-mentioned purpose, the present application also proposes a surgical operating system, which includes: an ultrasonic device and an energy output device as described above, and the energy output device is connected to the ultrasonic device.

[0035] The present application provides a temperature control method for reducing thermal damage, a storage medium, an energy output device and a surgical operating system. The method is applied to the energy output device in the surgical operating system. The surgical operating system also includes an ultrasonic device. The energy output device is connected to the ultrasonic device. The method includes: determining a starting temperature corresponding to the starting moment and an ending temperature corresponding to the ending moment of the ultrasonic device within each sampling period; determining a temperature difference corresponding to each sampling period according to each starting temperature and each ending temperature; determining a temperature change slope corresponding to the current operating moment based on each temperature difference; and when the temperature change slope is higher than a preset temperature change slope threshold, reducing the output power transmitted to the ultrasonic device to reduce the current temperature of the ultrasonic device. Since the present application can collect the starting temperature corresponding to the starting moment and the ending temperature corresponding to the ending moment of the ultrasonic device in each sampling period according to each sampling period, and then determine the temperature difference in each sampling period according to each starting temperature and each ending temperature, and determine the temperature change slope of the ultrasonic device at the current operating moment based on each temperature difference, finally, when the temperature change slope is higher than the preset temperature change slope threshold, reduce the output power transmitted to the ultrasonic device, thereby reducing the current temperature of the ultrasonic device, thereby preventing the temperature from rising too fast and causing thermal damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0037] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0038] Figure 1 A schematic diagram of the structure of an energy output device in the hardware operating environment involved in the embodiment of the present application;

[0039] Figure 2 A schematic flow chart of a first embodiment of a temperature control method for reducing thermal damage in the present application;

[0040] Figure 3 A schematic flow chart of a second embodiment of a temperature control method for reducing thermal damage according to the present application;

[0041] Figure 4 This is a flow chart of a third embodiment of a temperature control method for reducing thermal damage according to the present application.

[0042] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0043] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0044] Reference Figure 1 , Figure 1 This is a schematic diagram of the energy output device structure of the hardware operating environment involved in the embodiment of the present application.

[0045] like Figure 1 As shown, the energy output device may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a wireless fidelity (Wireless-Fidelity, Wi-Fi) interface). The memory 1005 may be a high-speed random access memory (Random Access Memory, RAM), or a stable non-volatile memory (Non-Volatile Memory, NVM), such as a disk storage. The memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0046] Those skilled in the art will understand that Figure 1 The structure shown in the figure does not constitute a limitation on the energy output device, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0047] like Figure 1 As shown, the memory 1005 as a storage medium may include an operating system, a network communication module, a user interface module, and a temperature control program for reducing thermal damage.

[0048] exist Figure 1In the energy output device shown, the network interface 1004 is mainly used for data communication with the network server; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and the memory 1005 in the energy output device of the present application can be set in the energy output device, and the energy output device calls the temperature control program for reducing thermal damage stored in the memory 1005 through the processor 1001, and executes the temperature control method for reducing thermal damage provided in the embodiment of the present application.

[0049] It should be noted that at present, ultrasonic scalpel, as a medical device that uses the principle of ultrasound for surgical cutting, has been widely used in the medical field due to its advantages such as being non-invasive and radiation-free.

[0050] Among them, the energy host, as an energy output device, can generate resonant frequency and voltage to transmit to the transducer. The transducer converts the generated energy into mechanical vibration of the ultrasonic device (i.e., ultrasonic knife), thereby completing the tissue cutting of the surgical site. The high-frequency vibration of the ultrasonic device can generate heat in the surgical area, causing the tissue temperature in the surgical area to rise rapidly. Too fast a temperature rise may cause the temperature to be too high in a short period of time, which in turn causes thermal damage to the tissue in the surgical area. Therefore, how to prevent the temperature from rising too fast and causing thermal damage is an urgent problem to be solved.

[0051] In order to solve the above defects, the present embodiment provides a temperature control method for reducing thermal damage, which is applied to an energy output device in a surgical operating system, wherein the surgical operating system also includes an ultrasonic device, and the energy output device is connected to the ultrasonic device. Since the present embodiment can collect the starting temperature corresponding to the starting moment and the ending temperature corresponding to the ending moment of the ultrasonic device in each sampling period according to each sampling period, and then determine the temperature difference in each sampling period according to each starting temperature and each ending temperature, and determine the temperature change slope of the ultrasonic device at the current operating moment based on each temperature difference, and finally, when the temperature change slope is higher than the preset temperature change slope threshold, reduce the output power transmitted to the ultrasonic device, thereby reducing the current temperature of the ultrasonic device, thereby preventing the temperature from rising too fast and causing thermal damage.

[0052] For ease of understanding, the following combination Figures 2 to 4 The temperature control method for reducing thermal damage provided in the embodiments of the present application is specifically introduced.

[0053] Reference Figure 2 , Figure 2 The first embodiment of the temperature control method for reducing thermal damage in the present application is provided as a flow chart of the first embodiment of the temperature control method for reducing thermal damage in the present application. Figure 2As shown, in this embodiment, the method is applied to an energy output device in a surgical operating system, and the surgical operating system also includes an ultrasonic device, and the energy output device is connected to the ultrasonic device.

[0054] It is understandable that the surgical operating system in this embodiment may include an energy output device, a transducer and an ultrasonic device, wherein the energy output device is connected to the ultrasonic device via a transducer, and the energy output device can transmit output power to the transducer in the form of resonant frequency and voltage, and the transducer generates energy and transmits it to the ultrasonic device. Specifically, the energy output device can be any device for outputting energy required for the ultrasonic device to work, such as an energy host, etc., which is not limited in this embodiment, and the ultrasonic device can be a device that uses ultrasonic signals to work, such as an ultrasonic knife, etc., which is not limited in this embodiment.

[0055] The method comprises:

[0056] Step S10: determining a starting temperature corresponding to a starting time and an ending temperature corresponding to an ending time of the ultrasonic device in each sampling period.

[0057] It should be understood that the method of this embodiment can be applied in the scenario where the energy output device mentioned above controls the temperature of the ultrasonic device, and of course it can also be applied in the scenario where other devices perform temperature control. This embodiment uses the scenario where the energy output device mentioned above performs temperature control to illustrate. The execution subject of the method of this embodiment can be a temperature control device that reduces thermal damage and has the functions of temperature control, data processing, and program running to reduce thermal damage, such as the energy output device mentioned above, and of course it can also be other devices that achieve the same or similar functions. This embodiment does not limit this. This embodiment uses the energy output device mentioned above to illustrate this embodiment and the following embodiments.

[0058] It should be noted that the sampling period may be the period corresponding to the information collected by the energy output device. The start time is the time corresponding to the start of sampling within the sampling period, and the end time is the time corresponding to the end of sampling within the sampling period. The duration obtained by subtracting the start time from the end time is the duration corresponding to one sampling period of the energy output device.

[0059] Exemplarily, if the start time is recorded as T1 and the end time is recorded as T2, the duration corresponding to each sampling period of the energy output device is T2-T1.

[0060] It is understandable that the above-mentioned starting temperature may be the current temperature corresponding to the ultrasonic device at the start time within the sampling period, and the above-mentioned ending temperature may be the current temperature corresponding to the ultrasonic device at the end time within the sampling period.

[0061] In actual use, the energy output device can output energy to the ultrasonic device through the transducer, and the ultrasonic device can generate heat. The user can use this heat to quickly raise the temperature of the tissue in the surgical area to complete the surgical operation. At the same time, the energy output device can sample the temperature of the ultrasonic device according to a certain sampling period to obtain the starting temperature corresponding to the starting time of each sampling period and the ending temperature corresponding to the ending time.

[0062] Furthermore, considering that the existing energy output device cannot directly obtain the current temperature of the ultrasonic device, and the current temperature of the ultrasonic device is generally related to the resonant frequency of the energy output device, the current temperature of the ultrasonic device can be determined according to the resonant frequency in this embodiment. The specific process is the above step S10, including:

[0063] Step S11: acquiring a starting resonance frequency received by the ultrasonic device at a starting moment and an ending resonance frequency received at an ending moment in each sampling period;

[0064] Step S12: determining the starting temperature corresponding to each starting moment according to each starting resonant frequency by using a preset fitting relationship;

[0065] Step S13: determining the end temperature corresponding to each end time according to each end resonant frequency by using the preset fitting relationship.

[0066] It should be understood that the above-mentioned starting resonant frequency may be the resonant frequency output by the energy output device at the starting moment of each sampling period, and the above-mentioned ending resonant frequency may be the resonant frequency output by the energy output device at the ending moment of each sampling period.

[0067] In this embodiment, an output unit may be provided in the above energy output device, and the output unit may be a unit for outputting a resonant frequency, which may be connected to a transducer and used to transmit the generated resonant frequency to the transducer. At the same time, the output unit may also collect the output resonant frequency in real time. Furthermore, in this embodiment, the starting resonant frequency at the starting moment and the ending resonant frequency at the ending moment in each sampling period may be obtained through the above output unit, and the starting resonant frequency is recorded as F1, and the ending resonant frequency is recorded as F2.

[0068] It should be emphasized that the specific structure of the output unit is not limited in this embodiment.

[0069] After obtaining the starting resonant frequency F1 at each starting time T1 and the ending resonant frequency F2 at each ending time T2, the starting temperature corresponding to each starting time T1 and the ending temperature corresponding to each ending time T2 can be determined by a preset fitting relationship.

[0070] It should be noted that the above-mentioned preset fitting relationship can be a relationship obtained by fitting different resonant frequencies and the temperatures of the ultrasonic device at different resonant frequencies. That is, before actual use, the above-mentioned energy output device can obtain the temperature corresponding to the ultrasonic device when outputting different resonant frequencies, and fit each resonant frequency and the corresponding temperature to obtain the above-mentioned preset fitting relationship.

[0071] Furthermore, in actual use, the starting temperature corresponding to the starting time T1 in each sampling period and the ending temperature corresponding to the ending time T2 in each sampling period can be determined by a preset fitting relationship.

[0072] Furthermore, considering that the transducer also generates heat during operation, which causes the collected resonant frequency to shift, thereby affecting subsequent operations, in this embodiment, before the above step S10, it also includes:

[0073] Step S01: when power-on is detected, a self-check operation is performed, and a target impedance point is determined according to the operation;

[0074] It is understandable that the above self-check operation can be an operation for the energy output device to perform self-correction, the above target impedance point can be the point corresponding to the minimum impedance, and the above impedance can be the impedance corresponding to the energy output device, which can be calculated based on the voltage value and current value output by the energy output unit. Specifically, in this embodiment, a frequency sweep unit can be set in the energy output device, and the above self-check operation is completed by the frequency sweep unit. That is, when in use, when the energy output device is powered on, the frequency sweep unit can set a self-check frequency range, and the output unit can gradually increase the output resonant frequency according to the preset step size within the self-check frequency range, thereby determining the target impedance point. The above self-check frequency range and preset step size can be set according to actual conditions, and this embodiment does not limit this.

[0075] Exemplarily, if the self-test frequency range is set to 0 Hz to 2000 Hz and the preset step size is 1 Hz, the energy output device can start from 0 Hz and increase the output resonant frequency in steps of 1 Hz, and obtain the voltage value and current value output by the energy output device to the transducer at each resonant frequency. The corresponding impedance can be obtained based on the voltage value and current value, and a curve is drawn according to the impedance at each resonant frequency, and the point with the smallest impedance is determined, which can be used as the target impedance point.

[0076] It should be emphasized that when calculating impedance based on voltage and current values, the calculation can be performed in combination with Ohm's law. Since Ohm's law is a prior art, the specific process of calculating impedance based on voltage and current values ​​is not described in detail in this embodiment.

[0077] Step S02: determining a target resonant frequency based on the target impedance point;

[0078] Step S03: taking the target resonant frequency as a starting sampling point, obtaining a starting resonant frequency received by the ultrasonic device at a starting moment and an ending resonant frequency received at an ending moment in each sampling period.

[0079] It should be understood that the above-mentioned target resonant frequency can be the resonant frequency corresponding to the minimum impedance. When the energy output device obtains the target impedance point, the resonant frequency corresponding to the point can be determined according to the drawn curve as the above-mentioned target resonant frequency, recorded as F0. When the starting resonant frequency corresponding to the starting time and the ending resonant frequency corresponding to the ending time in each sampling period are subsequently determined, the target resonant frequency F0 is used as the starting sampling point for collection, so as to reduce the impact of the offset and improve the accuracy of the subsequent collection results.

[0080] Step S20: determining the temperature difference corresponding to each sampling period according to each starting temperature and each ending temperature;

[0081] Step S30: determining the temperature change slope corresponding to the current operating moment based on each of the temperature differences;

[0082] Step S40: When the temperature change slope is higher than a preset temperature change slope threshold, reducing the output power transmitted to the ultrasonic device to reduce the current temperature of the ultrasonic device.

[0083] It should be noted that the temperature difference may be the temperature difference between the starting temperature at the starting time T1 and the ending temperature at the ending time T2 in each sampling period. In this embodiment, the starting temperature at the starting time T1 in each sampling period may be recorded as t1, and the ending temperature at the ending time t2 may be recorded as t2, and the temperature difference corresponding to each sampling period may be recorded as t1-t2.

[0084] It should be emphasized that, since the temperature of a general ultrasonic device is inversely proportional to the resonant frequency, that is, the higher the temperature, the lower the corresponding resonant frequency. In order to ensure the accuracy of the temperature difference, this embodiment can determine the sign of the temperature difference in combination with the change trend of the resonant frequency in the sampling period. Specifically, when the resonant frequency increases in the sampling period, the sign of the temperature difference is negative, and when the resonant frequency decreases in the sampling period, the sign of the temperature difference is positive.

[0085] It is understandable that the temperature change slope may be the slope corresponding to the current temperature change of the ultrasonic device. The preset temperature change slope threshold may be the threshold corresponding to judging whether the temperature of the ultrasonic device changes too fast, which may be set according to actual conditions, and this embodiment does not limit this.

[0086] In actual use, after determining the temperature difference within each sampling period, the energy output device can construct a mathematical relationship between the moment corresponding to each sampling period and the temperature difference within each sampling period based on each temperature difference, and then derive the mathematical relationship, so as to determine the current temperature change slope of the ultrasonic device at the current operating moment, and compare it with the preset temperature change slope threshold; when the temperature change slope at the current operating moment is not higher than the preset temperature change slope threshold, it can be said that the temperature change of the ultrasonic device is slow and the risk of thermal damage is low, and the energy output device normally outputs the resonant frequency and voltage to the transducer, that is, normally outputs the output power, and the ultrasonic device works normally; when the temperature change slope at the current operating moment is higher than the preset temperature change slope threshold, it can be said that the temperature change of the ultrasonic device is fast and the risk of thermal damage is high. At this time, the energy output device reduces the output power (for example, reduces the voltage, etc.), thereby reducing the temperature of the ultrasonic device.

[0087] Since the present embodiment can collect the starting temperature corresponding to the starting moment and the ending temperature corresponding to the ending moment of the ultrasonic device in each sampling period according to each sampling period, and then determine the temperature difference in each sampling period according to each starting temperature and each ending temperature, and determine the temperature change slope of the ultrasonic device at the current operating moment based on each temperature difference, finally, when the temperature change slope is higher than the preset temperature change slope threshold, reduce the output power transmitted to the ultrasonic device, thereby reducing the current temperature of the ultrasonic device, thereby preventing the temperature from rising too fast and causing thermal damage.

[0088] It should also be emphasized that in order to reduce heat damage, there are several traditional methods:

[0089] Method 1: A method of controlling the intermittent and short-term output power of the energy output device through manual operation;

[0090] Method 2: Cooling the surgical area with saline;

[0091] Method 3: Using the manual operation of ultrasound equipment to use transitional coagulation and "double coagulation", that is, the manual operation of ultrasound equipment briefly contacts the surgical area, then immediately moves away for a period of time, and then briefly contacts the surgical area again, and so on;

[0092] Method 4: A sheath is provided around the support rod of the ultrasonic device, and the inner and outer surfaces of the sheath are respectively made of high thermal conductivity and heat insulation material layers to absorb the excess heat during the vibration of the cutting blade;

[0093] Method 5: Through organizational adaptive technology and intelligent organizational tracking.

[0094] However, among the above methods, methods 1 to 3 require manual operation, which increases the manual operation procedures and has a poor user experience. Method 4 increases the cost of materials, and because it is a disposable consumable, the usage is large. Method 5 can only be achieved by contacting the tissue in the surgical area, which is inevitable if the tissue is not contacted, and has poor safety. Therefore, this embodiment adopts the above method, which can reduce thermal damage without adding manual operation procedures and additional costs, and at the same time, it does not need to contact the tissue, further improving safety. And because it does not need to contact the tissue, it effectively avoids the huge increase in heat caused by friction when using it in a no-load clamping state in a non-cutting state, thereby reducing the risk of thermal damage to the blade and reducing gasket wear.

[0095] Reference Figure 3 , Figure 3 This is a flow chart of a second embodiment of a temperature control method for reducing thermal damage of the present application. Based on the above-mentioned first embodiment, a second embodiment of a temperature control method for reducing thermal damage of the present application is proposed.

[0096] In order to ensure that subsequent surgical operations can be performed after the current temperature of the ultrasound device is lowered, the temperature is lowered for protection, but the lowered temperature may not meet the needs of surgical operations. The user may manually adjust the temperature and need to restore the temperature of the ultrasound device. The manual temperature adjustment operation will make the user feel cumbersome and the surgical efficiency will be low. Therefore, Figure 3 As shown, in this embodiment, after the step of reducing the output power transmitted to the ultrasonic device when the temperature change slope is higher than the preset temperature change slope threshold, the step further includes:

[0097] Step S50: determining the current temperature of the ultrasonic device according to the starting resonant frequency and the ending resonant frequency in the current sampling period;

[0098] Step S60: determining whether the current temperature is within a preset normal temperature range;

[0099] Step S70: When the current temperature is within the preset normal temperature range, gradually adjusting the output power transmitted to the ultrasonic device to a target output power threshold.

[0100] It should be noted that the above-mentioned current sampling period may be the period corresponding to the sampling at the current moment. The above-mentioned current temperature may be the temperature of the ultrasonic device at the current operating moment after cooling down. The above-mentioned preset normal temperature range may be the temperature range when the ultrasonic device is in a normal state, and the preset normal temperature range may be set according to the actual situation, which is not limited in this embodiment. The above-mentioned target output power threshold may be a preset power threshold when restoring normal temperature rise, and may also be set according to the actual situation, which is not limited in this embodiment.

[0101] In actual use, after the energy output device reduces the output power, it can continue to collect the real-time resonant frequency, that is, continue to obtain the starting resonant frequency and the ending resonant frequency within the sampling period, and determine the current temperature of the ultrasonic device at the current moment through the above preset fitting relationship based on the starting resonant frequency and the ending resonant frequency. Then, it is determined whether the current temperature is reduced to the preset normal temperature range; if it is not reduced to the preset normal temperature range, the energy output device still maintains the reduced output power for output; if it is reduced to the preset normal temperature range, the energy output device restores the output power before the reduction for output, thereby heating up the ultrasonic device.

[0102] However, it should be emphasized that when heating up, considering that if the output power before the reduction is still output, the temperature change slope may continue to be higher than the preset temperature change slope threshold, so this embodiment adopts a gradual heating strategy when heating up, that is, gradually increase the output power according to the preset heating strategy until the output power before the reduction. This not only meets the user's need for heating, but also avoids the situation where the temperature change slope is higher than the preset temperature change slope threshold due to too fast heating, resulting in oscillation. The above-mentioned preset heating strategy can be set according to the actual situation, and this embodiment does not limit this.

[0103] For example, if the energy output device is provided with five gears, and the higher the gear, the higher the corresponding output power. In actual use, if the energy output device is in gear 5, and the corresponding temperature change slope is higher than the preset temperature change slope threshold, then the ultrasound device reduces the output power, that is, reduces the corresponding gear, for example, reduces it to gear 3 for output, and judges in real time whether the current temperature of the ultrasound device is reduced to the preset normal temperature range; if not, continue to maintain the output at gear 3; if so, the energy output device is restored to gear 5 for output, and can be gradually restored according to the above-mentioned preset temperature increase strategy, for example, first use gear 4 for output for a period of time and then restore to gear 5 for output, so that the ultrasound device is heated up to ensure the smooth progress of subsequent surgical operations.

[0104] Furthermore, considering that when the surgical operation is about to be completed, there is no need to continue to increase the temperature, so in this embodiment, after the above step S10, it also includes:

[0105] Determining the current impedance of the ultrasound device in each of the sampling periods, and determining the impedance change slope according to each of the current impedances;

[0106] Accordingly, the above step S60 includes:

[0107] When the impedance change slope is not higher than a preset impedance change slope threshold, it is determined whether the current temperature is within a preset normal temperature range.

[0108] It should be noted that the current impedance may be the real-time impedance corresponding to the energy output device in each sampling period. The impedance change slope may be the slope of the current impedance change in each sampling period. The preset impedance change slope threshold may be the impedance slope threshold corresponding to determining whether the surgical operation is about to be completed.

[0109] It is understandable that when the tissue contacted by the ultrasonic device is about to be clamped off, the slope of the current impedance of the energy output device will increase dramatically. Therefore, this embodiment can use this phenomenon as a basis to determine whether it is about to be clamped off, and thus determine whether the surgical operation is about to be completed.

[0110] In actual use, after the energy output device determines the starting temperature and the ending temperature in each sampling period, the impedance calculation unit set in the host can also collect the voltage value and the current value transmitted to the transducer in real time, and calculate the current impedance in the sampling period according to the voltage value and the current value. Specifically, the starting impedance at the starting time T1 can be obtained, recorded as R1, and the ending impedance at the ending time T2 can be obtained, recorded as R2. Then, according to each starting impedance R1 and each ending impedance R2, the impedance change slope at each moment can be obtained. The specific process can be consistent with the above-mentioned determination of the temperature change slope, and this embodiment will not elaborate on this.

[0111] After obtaining the impedance change slope, the energy output device can first determine the current temperature based on the starting resonant frequency F1 and the ending resonant frequency F2, and first determine whether the impedance change slope is higher than the preset impedance change slope threshold; if the impedance change slope is higher than the preset impedance change slope threshold, it can be said that it is about to be pinched off, so there is no need to increase the temperature subsequently, and the energy output device can directly reduce the output power, so that the ultrasonic device continues to cool down; if the impedance change slope is not higher than the preset impedance change slope threshold, it can be said that it has not been pinched off, and then it is determined whether the temperature has dropped to the preset normal temperature range, and if it has not dropped to the preset normal temperature range, the temperature will be increased.

[0112] It should be emphasized that when determining the current impedance, sampling can also be performed based on the impedance corresponding to the target impedance point determined in the above embodiment as the starting sampling point, that is, after determining the target impedance point, the impedance corresponding to the target impedance point is used as the target impedance, recorded as R0, and when the current frequency is subsequently determined, the target impedance R0 is used as the starting sampling point for collection, thereby improving the accuracy of subsequent collection results.

[0113] Reference Figure 4 , Figure 4 This is a flow chart of a third embodiment of a temperature control method for reducing thermal damage of the present application. Based on the above embodiments, a third embodiment of a temperature control method for reducing thermal damage of the present application is proposed.

[0114] In order to obtain the above preset fitting relationship, Figure 4 As shown, in this embodiment, before the above step S10, it also includes:

[0115] Step S001: when the ultrasonic device is in a preset test environment, obtaining a test resonant frequency corresponding to the ultrasonic device at each test temperature;

[0116] Step S002: fitting each of the test temperatures and each of the test resonant frequencies to obtain a preset fitting relationship.

[0117] It should be noted that the above-mentioned preset test environment can be an environment for testing the relationship between the temperature of the ultrasonic device and the corresponding resonant frequency. This embodiment uses an oil bath pot test environment for illustration, that is, a heating pot is provided, and synthetic oil is placed in the heating pot, and the operating part of the ultrasonic device (such as the blade of the ultrasonic knife) is placed in the synthetic oil.

[0118] It is understandable that the test temperature may be a temperature used to generate the fitting relationship. The test resonant frequency may be a resonant frequency used to generate the fitting relationship.

[0119] In actual use, the synthetic oil in the pot can be heated by a heating device, and the current temperature of the ultrasonic equipment can be collected in real time by a temperature collection device (such as a thermal imaging gun, etc.) as the above-mentioned test temperature. At the same time, the resonant frequency output at the test temperature is obtained by an energy output device as the above-mentioned test resonant frequency.

[0120] After obtaining the test temperature and the test resonant frequency, since the relationship between temperature and resonant frequency is an arc, the mathematical expression of a parabola can be used for fitting, that is, y=ax 2 +bx+c, where y is the test temperature, x is the test resonant frequency, and a, b and c are fitting parameters.

[0121] Then, each test temperature and the corresponding test resonant frequency can be substituted into the above expression and fitted using the least square method. The values ​​of a, b and c can be obtained by minimizing the square difference between the predicted value and the actual value, thereby obtaining the above preset fitting relationship.

[0122] As another implementation, when the ultrasonic device is in the above-mentioned preset test environment, an impedance analyzer may be used instead of the energy output device in this embodiment to output the resonant frequency. The process is the same as that described above and will not be elaborated in this embodiment.

[0123] Furthermore, in order to obtain the above-mentioned preset impedance change slope threshold, in this embodiment, before the above-mentioned step S10, it also includes:

[0124] Step S003: when the ultrasonic device is in a preset test environment, obtaining the test impedance corresponding to the ultrasonic device at each test temperature;

[0125] Step S004: determining a preset impedance change slope threshold according to each of the test impedances.

[0126] It should be understood that the test impedance may be the impedance used for testing. When the operating part of the ultrasonic device is in the synthetic oil, the impedance will also change with the temperature. Therefore, in this embodiment, when the synthetic oil is heated, the energy output device can also obtain the impedance corresponding to each test temperature in real time as the test impedance, and determine the preset impedance change slope threshold according to each test impedance.

[0127] Specifically, after obtaining each test impedance, the slope change at each moment can be determined based on each test impedance. When a sharp increase in impedance occurs in the test impedance, specifically, the slope may be higher than a certain slope threshold (the slope threshold may be set according to actual conditions), and the slopes of several consecutive test impedances are higher than the slope threshold. Then, the slope corresponding to the first time it exceeds the slope threshold can be determined as the above-mentioned preset impedance change slope threshold.

[0128] It should be emphasized that the number of the above-mentioned continuous test impedances can be set according to actual conditions, and this embodiment does not limit this.

[0129] In addition, an embodiment of the present application further proposes a storage medium, on which is stored a temperature control program for reducing thermal damage. When the temperature control program for reducing thermal damage is executed by a processor, the temperature control method for reducing thermal damage as described above is implemented.

[0130] In addition, an embodiment of the present application also proposes a surgical operating system, which includes an ultrasonic device and an energy output device as described above, and the energy output device can be connected to the ultrasonic device, specifically, the energy output device can be connected to the ultrasonic device through a transducer.

[0131] Other embodiments or specific implementations of the surgical operating system described in the present application can refer to the above-mentioned method embodiments and will not be described in detail here.

[0132] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0133] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0134] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as a read-only memory image (ROM) / random access memory (RAM), a magnetic disk, or an optical disk), and includes a number of instructions for a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0135] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A temperature control method for reducing thermal damage, the method being applied to an energy output device in a surgical operating system, the surgical operating system further comprising an ultrasonic device, the energy output device being connected to the ultrasonic device; characterized in that: The method comprises: Determine a starting temperature corresponding to a starting time and an ending temperature corresponding to an ending time of the ultrasonic device in each sampling period; Determine the temperature difference corresponding to each sampling period according to each starting temperature and each ending temperature; Determine the temperature change slope corresponding to the current operating moment based on each of the temperature differences; When the temperature change slope is higher than a preset temperature change slope threshold, the output power transmitted to the ultrasonic device is reduced to reduce the current temperature of the ultrasonic device.

2. The method according to claim 1, characterized in that The step of determining the starting temperature corresponding to the starting time and the ending temperature corresponding to the ending time of the ultrasonic device in each sampling period includes: Acquire a starting resonance frequency received by the ultrasonic device at a starting moment and an ending resonance frequency received at an ending moment in each sampling period; Determining the starting temperature corresponding to each starting moment according to each starting resonant frequency by using a preset fitting relationship; The end temperature corresponding to each end time is determined according to each end resonant frequency through the preset fitting relationship.

3. The method according to claim 2, characterized in that Before the step of obtaining the starting resonance frequency received by the ultrasonic device at the starting time and the ending resonance frequency received at the ending time in each sampling period, the method further includes: When the ultrasonic device is in a preset test environment, obtaining a test resonant frequency corresponding to the ultrasonic device at each test temperature; Fitting is performed on each of the test temperatures and each of the test resonant frequencies to obtain a preset fitting relationship.

4. The method according to claim 1, characterized in that After the step of reducing the output power transmitted to the ultrasonic device when the temperature change slope is higher than a preset temperature change slope threshold, the method further includes: Determine the current temperature of the ultrasonic device according to the starting resonant frequency and the ending resonant frequency in the current sampling period; Determining whether the current temperature is within a preset normal temperature range; When the current temperature is within the preset normal temperature range, the output power transmitted to the ultrasonic device is gradually adjusted to a target output power threshold.

5. The method according to claim 4, characterized in that After the step of determining the starting temperature corresponding to the starting time and the ending temperature corresponding to the ending time of the ultrasonic device in each sampling period, the method further includes: Determining the current impedance of the ultrasound device in each of the sampling periods, and determining the impedance change slope according to each of the current impedances; The step of determining whether the current temperature is within a preset normal temperature range comprises: When the impedance change slope is not higher than a preset impedance change slope threshold, it is determined whether the current temperature is within a preset normal temperature range.

6. The method according to claim 5, characterized in that Before the step of determining the starting temperature corresponding to the starting time and the ending temperature corresponding to the ending time of the ultrasonic device in each sampling period, the method further includes: When the ultrasonic device is in a preset test environment, obtaining the test impedance corresponding to the ultrasonic device at each test temperature; A preset impedance change slope threshold is determined according to each of the test impedances.

7. The method according to any one of claims 2 to 6, characterized in that The step of obtaining the starting resonant frequency received by the ultrasonic device at the starting time and the ending resonant frequency received at the ending time in each sampling period includes: When power-on is detected, a self-check operation is performed and the target impedance point is determined according to the operation; Determining a target resonant frequency based on the target impedance point; The target resonant frequency is used as a starting sampling point to obtain a starting resonant frequency received by the ultrasonic device at a starting moment and an ending resonant frequency received at an ending moment in each sampling period.

8. A storage medium, characterized in that: The storage medium stores a temperature control program for reducing thermal damage, and when the temperature control program for reducing thermal damage is executed by the processor, the steps of the temperature control method for reducing thermal damage according to any one of claims 1 to 7 are implemented.

9. An energy output device, characterized in that: The energy output device includes: a memory, a processor, and a temperature control program for reducing thermal damage stored in the memory and executable on the processor, wherein the temperature control program for reducing thermal damage is configured to implement the steps of the temperature control method for reducing thermal damage as described in any one of claims 1 to 7.

10. A surgical operating system, characterized in that: The surgical operating system comprises: an ultrasonic device and an energy output device as claimed in claim 9, wherein the energy output device is connected to the ultrasonic device.

Images