Scalpel head mounting detection method for ultrasonic scalpel and ultrasonic scalpel

Abstract

Disclosed are a scalpel head mounting detection method for an ultrasonic scalpel and an ultrasonic scalpel. Whether the scalpel head of the ultrasonic scalpel is mounted in place is determined by means of the following steps: if it is detected that the scalpel head and a transducer are converted from a separation state to a connection state, controlling to excite the transducer of the ultrasonic scalpel with a first power that is less than the power rating of the ultrasonic scalpel; if the current operating frequency of the ultrasonic scalpel exceeds a resonant frequency tolerance range, or the current impedance of the ultrasonic scalpel is greater than a preset impedance limit, determining that the scalpel head of the ultrasonic scalpel is not mounted in place; otherwise, controlling to excite the transducer of the ultrasonic scalpel with a second power, wherein the second power is greater than the first power and less than the power rating of the ultrasonic scalpel; and making a further judgment: if the current operating frequency of the ultrasonic scalpel exceeds the resonant frequency tolerance range, or the current impedance of the ultrasonic scalpel is greater than the preset impedance limit, determining that the scalpel head of the ultrasonic scalpel is not mounted in place.

Description

Ultrasonic scalpel head installation detection method and ultrasonic scalpel TECHNICAL FIELD

[0001] The present application relates to the field of ultrasonic knives, in particular to an ultrasonic scalpel head installation detection method and an ultrasonic scalpel. BACKGROUND

[0002] The head of the ultrasonic scalpel usually needs to be installed on the transducer by threads. If the torque of the head installation is not enough, it will cause the vibration in the energy excitation process to be unable to be conducted from the transducer to the head as expected, and then various problems such as slow cutting speed, inability to cut, and excessive heating at the connection of the cutting head will occur, which will affect the clinical operation effect.

[0003] At present, when the ultrasonic scalpel is installed with the head, a mechanical torque wrench can usually be used, and the operator operates the wrench to implement torque on the head. However, in actual operation, operator errors, torque wrench use time is too long and torque changes occur, etc. will all cause actual installation to be poor.

[0004] The existing ultrasonic scalpel product does not have an effective method for detecting whether the head installation is in place, and even does not realize that the head installation needs to be tested before the ultrasonic scalpel is started to excite energy.

[0005] The disclosure of the above background art content is only used to assist in understanding the inventive concept and technical solutions of the present application, and it does not necessarily belong to the prior art of the present application, nor does it necessarily give technical teaching. In the absence of explicit evidence that the above-mentioned content has been disclosed before the filing date of the present application, the above-mentioned background art should not be used to evaluate the novelty and inventiveness of the present application. SUMMARY

[0006] The purpose of the present application is to provide a detection method for conveniently and effectively detecting whether the head of an ultrasonic scalpel is installed in place.

[0007] To achieve the above-mentioned purpose, the technical solutions adopted by the present application are as follows:

[0008] An ultrasonic scalpel head installation detection method detects whether the head of an ultrasonic scalpel is installed in place by the following steps:

[0009] If it is identified that the head of the ultrasonic scalpel is converted from a separated state to a connected state with the transducer, the transducer of the ultrasonic scalpel is excited with a first power, wherein the first power is less than the rated power of the ultrasonic scalpel;

[0010] If the current working frequency of the ultrasonic scalpel exceeds the resonance frequency tolerance range, or the current impedance of the ultrasonic scalpel is greater than the preset impedance limit value, it is determined that the blade head of the ultrasonic scalpel is not installed in place.

[0011] If the current working frequency of the ultrasonic scalpel is within the resonance frequency tolerance range, and the current impedance of the ultrasonic scalpel is less than or equal to the preset impedance limit value, the transducer of the ultrasonic scalpel is excited with a second power, wherein the second power is greater than the first power, and the second power is less than the rated power of the ultrasonic scalpel; and then it is determined that the blade head of the ultrasonic scalpel is not installed in place if the current working frequency of the ultrasonic scalpel exceeds the resonance frequency tolerance range, or the current impedance of the ultrasonic scalpel is greater than the preset impedance limit value.

[0012] Further, in any of the above technical solutions or a combination of multiple technical solutions, if the result of the last determination is that the current working frequency of the ultrasonic scalpel is within the resonance frequency tolerance range, and the current impedance of the ultrasonic scalpel is less than or equal to the preset impedance limit value, the second power is gradually increased without exceeding the preset limit power, wherein the limit power is greater than or equal to the rated power.

[0013] Then, it is determined that the blade head of the ultrasonic scalpel is not installed in place if the current working frequency of the ultrasonic scalpel exceeds the resonance frequency tolerance range, or the current impedance of the ultrasonic scalpel is greater than the preset impedance limit value, and the detection program is exited.

[0014] Further, in any of the above technical solutions or a combination of multiple technical solutions, the handle and the blade head of the ultrasonic scalpel are respectively configured with a communication module or a sensing module, and when the handle is connected with the transducer, it is recorded as a first communication state or a first sensing state; and if the blade head is separated from the transducer, it is recorded as a second communication state or a second sensing state.

[0015] If the second communication state is converted to the first communication state, or the second sensing state is converted to the first sensing state, a trigger signal is generated to control the transducer of the ultrasonic scalpel to be excited with the first power.

[0016] Further, in any of the above technical solutions or a combination of multiple technical solutions, the blade head is configured with a storage module configured to store a corresponding impedance value.

[0017] The impedance value in the storage module is read, and the impedance limit value is determined according to a preset rule, wherein the impedance limit value is greater than or equal to the impedance value written in the storage module.

[0018] Further, any one of the above technical solutions or a combination of the above technical solutions, first determine whether the current working frequency of the ultrasonic scalpel is within the resonance frequency tolerance range, if the determination result is no, directly determine that the blade head of the ultrasonic scalpel is not installed in place; otherwise, determine whether the current impedance of the ultrasonic scalpel is less than or equal to the preset impedance limit value, if the determination result is no, determine that the blade head of the ultrasonic scalpel is not installed in place.

[0019] Further, any one of the above technical solutions or a combination of the above technical solutions, first determine whether the current impedance of the ultrasonic scalpel is less than or equal to the preset impedance limit value, if the determination result is no, directly determine that the blade head of the ultrasonic scalpel is not installed in place; otherwise, determine whether the current working frequency of the ultrasonic scalpel is within the resonance frequency tolerance range, if the determination result is no, determine that the blade head of the ultrasonic scalpel is not installed in place.

[0020] Further, any one of the above technical solutions or a combination of the above technical solutions, if the latest determination result is that the current working frequency of the ultrasonic scalpel is within the resonance frequency tolerance range, and the current impedance of the ultrasonic scalpel is less than or equal to the preset impedance limit value, control the transducer of the ultrasonic scalpel to be excited at a third power, wherein the third power is a preset limit power, and the limit power is greater than or equal to the rated power.

[0021] If the determination result is that the current working frequency of the ultrasonic scalpel is within the resonance frequency tolerance range, and the current impedance of the ultrasonic scalpel is less than or equal to the preset impedance limit value within a preset time period, it is determined that the blade head of the ultrasonic scalpel is installed in place, otherwise it is determined that the blade head of the ultrasonic scalpel is not installed in place.

[0022] Further, any one of the above technical solutions or a combination of the above technical solutions, during the process of exciting the transducer of the ultrasonic scalpel at the first power or the third power, the blade head is kept unloaded.

[0023] Alternatively, before determining that the blade head of the ultrasonic scalpel is installed in place, the blade head is kept unloaded.

[0024] Further, any one of the above technical solutions or a combination of the above technical solutions, if the blade head is detected to be loaded before determining that the blade head is installed in place, control to interrupt or terminate the energy excitation to the transducer.

[0025] Further, any one of the above technical solutions or a combination of the above technical solutions, the preset time period is greater than or equal to 3s.

[0026] And / or, if it is determined that the blade head of the ultrasonic scalpel is not installed in place, a prompt device is used to make a prompt for checking the installation of the blade head.

[0027] According to another aspect of the present application, an ultrasonic scalpel is provided, comprising a handle and a blade head, the handle is provided with a transducer and a master control module, the master control module uses the detection method described above to determine whether the blade head of the ultrasonic scalpel is installed in place.

[0028] Further, any one of the technical solutions or a combination of multiple technical solutions described above, the handle is further provided with a first communication module, the blade head is provided with a second communication module and a storage module, the storage module is written with the impedance value of the blade head;

[0029] In response to the first communication module and the second communication module being switched from a disconnected state to a connected state, the master control module controls to excite the transducer at a first power.

[0030] Further, any one of the technical solutions or a combination of multiple technical solutions described above, if the current working frequency of the ultrasonic scalpel is out of the resonance frequency tolerance range, or the current impedance of the ultrasonic scalpel exceeds the preset impedance limit value, it is determined that the blade head of the ultrasonic scalpel is not installed in place, wherein the impedance limit value is determined according to the impedance value written in the storage module and a preset rule.

[0031] Further, any one of the technical solutions or a combination of multiple technical solutions described above, the master control module pre-stores the rated power of the ultrasonic scalpel, and determines the first power as n% of the rated power, n is a real number less than 100;

[0032] If the current working frequency of the ultrasonic scalpel is within the resonance frequency tolerance range, and the current impedance of the ultrasonic scalpel is less than or equal to the impedance limit value, the first power is gradually increased without exceeding the preset limit power, and the current working frequency or the current impedance is repeatedly determined, wherein the limit power is determined according to the rated power and a preset rule;

[0033] If the current working frequency is out of the resonance frequency tolerance range, or the current impedance exceeds the preset impedance limit value, it is determined that the blade head of the ultrasonic scalpel is not installed in place.

[0034] Further, any one of the technical solutions or a combination of multiple technical solutions described above, in the case that the blade head of the ultrasonic scalpel cannot be determined to be not installed in place, the transducer is excited at a preset limit power, and the current working frequency or the current impedance is determined multiple times within a preset time period, wherein the limit power is greater than or equal to the rated power;

[0035] If the results of the multiple determinations within the preset time period are all that the current operating frequency is within the resonance frequency tolerance range, and the current impedance is less than or equal to the impedance limit value, it is determined that the blade head of the ultrasonic scalpel is installed in place, otherwise it is determined that the blade head of the ultrasonic scalpel is not installed in place.

[0036] The technical scheme provided by the present application has the following beneficial effects:

[0037] a. After each new blade head is reinstalled, the installation of the blade head is automatically detected to ensure successful installation and reduce problems such as slow cutting speed, inability to cut, and large heat at the connection of the cutting blade head caused by improper installation of the blade head.

[0038] b. Without increasing the complexity of the hardware structure, the blade head installation self-checking can be realized by modifying the program of the master control board based on the existing ultrasonic scalpel, and the applicability is strong. BRIEF DESCRIPTION OF DRAWINGS

[0039] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the description of the embodiments or the prior art will be briefly introduced. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0040] Fig. 1 is a flowchart of the blade head installation detection method of the ultrasonic scalpel provided by an exemplary embodiment of the present application;

[0041] Fig. 2 is a flowchart of the blade head installation detection method provided by another exemplary embodiment of the present application;

[0042] Fig. 3 is a hardware block diagram of the ultrasonic scalpel provided by an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0043] In order to enable those skilled in the art to better understand the present application, the technical scheme in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should be within the scope of protection of the present application.

[0044] It is to be understood that the terms "first", "second", and the like, used in the description and the claims of the application and the above description of the drawings, are used to differentiate between similar objects, and are not necessarily used to describe a particular sequential or chronological order. It is to be understood that the use of the terms so construed can be interchanged, where appropriate, to describe the embodiments of the application described herein in other than the order described herein. Further, the terms "comprising" and "including" and any variations thereof are intended to cover a non-exclusive inclusion, for example, a process, method, article, or apparatus that consists of a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but can include additional steps or units that are not expressly listed or inherent to such process, method, article, or apparatus.

[0045] In one embodiment of the application, a blade head installation detection method of an ultrasonic surgical knife is provided, which can be executed by a master control module of the ultrasonic surgical knife or a separate blade head installation detection module, which will be described below by taking the execution by the master control module of the ultrasonic surgical knife as an example, referring to FIG. 1, whether the blade head of the ultrasonic surgical knife is installed in place is detected by the following steps:

[0046] The first step is that the master control module of the ultrasonic surgical knife judges whether the blade head of the ultrasonic surgical knife has just been installed on the handle of the ultrasonic knife, and needs to be re-detected after each installation.

[0047] The technical means for specifically judging whether the installation of the blade head has just been completed is to record and update in real time the separation / connection state between the blade head and the transducer of the ultrasonic surgical knife, and each time the blade head and the transducer are identified to be converted from the separation state to the connection state, a trigger signal is generated to prompt that the installation of the blade head needs to be detected again.

[0048] Specifically, the handle and the blade head are respectively configured with a communication module, such as an NFC and RFID module, when the blade head is connected with the transducer, it is recorded as a first communication state, and when the blade head is separated from the transducer, it is recorded as a second communication state; if it is converted from the second communication state to the first communication state, the trigger signal is generated.

[0049] In another embodiment, a sensing module can be configured on the handle and the blade head, such as the transmitting end of the sensor is arranged on the handle and the receiving end is arranged on the blade head, only when the blade head is installed on the handle, the sensor sends a sensing signal, otherwise no sensing signal; then, when the sensing signal is from nothing to something, the trigger signal is generated.

[0050] The second step is that the master control module of the ultrasonic surgical knife controls the transducer of the ultrasonic surgical knife to be excited at a first power, in this embodiment, a limit power value is preset as 120% of the rated power value, and the first power is preset as 10% of the limit power value.

[0051] In one embodiment, based on the trigger signal of the first step, the excitation operation of the transducer is performed without additional manual operation; in order to ensure the safety of the operator, a delay can be set, and a prompt message such as "please note that the self-checking operation will be started in 5 seconds" is broadcasted by voice, and after the delay time, the transducer is excited at the first power.

[0052] In one embodiment, based on the trigger signal of the first step, additional manual operation is required to actually trigger the excitation operation of the transducer, for example, after the trigger signal of the first step, the master control module of the ultrasonic scalpel monitors that the trigger button is pressed for the first time, and then the transducer is excited at the first power. It should be noted that the present application does not limit the trigger button for actually triggering the excitation of the transducer in the self-checking process to the trigger button on the ultrasonic scalpel, for example, a specific key combination or a specific operation mode can also be used to represent the actual trigger instruction, such as pressing the high-power key and the low-power key at the same time, pressing the existing keys A, B, and C in a specific order, or pressing the existing key D four times in succession within 2 seconds, etc.; at the same time, the present application also does not exclude adding a special trigger button for self-checking on the ultrasonic scalpel.

[0053] In the third step, the master control module of the ultrasonic scalpel performs a preset double determination:

[0054] The first determination is to determine whether the current working frequency of the ultrasonic scalpel is within the resonance frequency tolerance range; the resonance frequency of the ultrasonic scalpel is typically defined as the impedance of the transducer of the ultrasonic scalpel being the smallest at the resonance frequency point, and the conversion efficiency of the electrical energy into mechanical energy being the highest; if it is out of the resonance frequency tolerance range, the mechanical energy converted by the transducer of the ultrasonic scalpel cannot be transmitted to the blade head. Typically, the master control module of the ultrasonic scalpel has a function module for calculating the resonance frequency point in real time according to the circuit parameters and working parameters of the transducer.

[0055] The second determination is to determine whether the current impedance of the ultrasonic scalpel is less than or equal to the preset impedance limit value; typically, different blade head models have different corresponding impedance values, and the blade head is configured with a storage module configured to store the corresponding impedance values; the impedance value in the storage module is read, and the impedance limit value is determined according to a preset rule, for example, in the present embodiment, the impedance value corresponding to the current model of the blade head is 75Ω, and the impedance limit value can be set to 85Ω (increased by 10Ω), or the impedance limit value can be set to 82.5Ω (increased by 10%), the above values are examples.

[0056] The result of the double determination is defined as follows: as long as the determination result of one of the first determination and the second determination is no (including three cases: case one, the result of the first determination is no and the result of the second determination is yes; case two, the result of the first determination is yes and the result of the second determination is no; case three, the result of the first determination is no and the result of the second determination is no), the result of the double determination is no.

[0057] If the result of the double determination is no, that is, if the current working frequency of the ultrasonic scalpel exceeds the resonance frequency tolerance range or the current impedance of the ultrasonic scalpel is greater than the preset impedance limit value, it is determined that the head of the ultrasonic scalpel is not installed in place, the self-checking program can be exited, and the prompt device can be prompted to check the installation of the head, such as displaying a prompt message on the display screen or playing a prompt signal through the voice device.

[0058] Only when the result of the first determination is yes and the result of the second determination is yes, that is, the current working frequency is within the resonance frequency tolerance range and the current impedance is less than the impedance limit value, the result of the double determination is defined as yes. In this case, the fourth step is performed.

[0059] In the fourth step, the power value of the first power is increased, and the main control module of the ultrasonic scalpel takes the increased power value as the updated current first power, and then repeats the first determination and the second determination above.

[0060] In this embodiment, the first power can be increased by 10% of the limit power value each time, that is, the transducer is excited at 20% of the limit power value (i.e. the second power). If the current working frequency is within the resonance frequency tolerance range and the current impedance is less than the impedance limit value during this process, the transducer is excited at 30% of the limit power value, and so on.

[0061] Before the transducer is excited at 100% of the limit power value, if the current working frequency is not within the resonance frequency tolerance range or the current impedance is not less than the impedance limit value at any time, it is determined that the head is not installed in place, the detection program is exited, and the prompt device is triggered.

[0062] The double determination performed in the third step and the fourth step can be as shown in FIG. 1. First, the first determination is made. If the determination result is no, the result of the double determination is directly output as no. Otherwise, the second determination is made again, and the result of the double determination is determined according to the determination result of the second determination.

[0063] In different embodiments, the second re-determination (not shown) can be made first, and if the determination result is no, the determination result of the double determination is no directly; otherwise, the first re-determination is made again, and the determination result of the double determination is determined according to the determination result of the first re-determination.

[0064] Before the transducer is excited to 100% of the limit power value, if the current operating frequency is out of the resonance frequency tolerance range once or the current impedance is greater than the impedance limit value once, it is determined that the tool bit is not installed in place.

[0065] Before the transducer is excited to 100% of the limit power value, the determination result of the double determination is yes each time, that is, the current operating frequency is in the resonance frequency tolerance range and the current impedance is less than the impedance limit value each time, and if the first power is increased to exceed the preset limit power, the fifth step is entered.

[0066] In the fifth step, the main control module of the ultrasonic surgical knife controls to excite the transducer of the ultrasonic surgical knife to 100% of the limit power value (the third power), and the double determination is performed multiple times within a preset time period.

[0067] If the determination result of the double determination multiple times within the preset time period is yes, in this embodiment, the transducer is excited to the limit power, and the current operating frequency is in the resonance frequency tolerance range and the current impedance is less than the impedance limit value within a 3s or 5s time period, it is determined that the tool bit of the ultrasonic surgical knife is installed in place; if there is a case that does not meet the condition within the time period, it is determined that the tool bit of the ultrasonic surgical knife is not installed in place.

[0068] In the process of exciting the transducer of the ultrasonic surgical knife to the first power or the third power, that is, in the process of the second step and the fifth step, the tool bit is kept unloaded, that is, not in contact with / biopsy tissue, not closed tightly.

[0069] The method for detecting whether the tool bit of the ultrasonic surgical knife is installed in place provided by the embodiment of the application is self-checking before excitation energy, in other words, before it is determined that the tool bit of the ultrasonic surgical knife is installed in place, the tool bit is kept unloaded.

[0070] If the tool bit is detected to be loaded before it is determined that the tool bit is installed in place, such as in contact with / biopsy tissue, the energy excitation to the transducer is interrupted or terminated. Specifically, detecting whether the tool bit is loaded includes detecting whether the change of the impedance value meets the preset condition, and if the preset condition is met, it is judged that the tool bit is loaded. For example, contacting / biopsy tissue can make the impedance value become very large, and detaching / loosening the tissue can make the impedance value return to a small value. Once it is detected that the impedance value is reduced during the self-checking process, the ultrasonic knife immediately stops exciting energy, to ensure personal safety.

[0071] In one embodiment of the present application, a display screen is integrated on the handle of the ultrasonic scalpel, or a separate display screen is used, or a voice broadcast device is provided to prompt the operator to keep the load empty during the self-checking process.

[0072] In another embodiment of the present application, referring to FIG. 2, the difference between the above embodiment corresponding to FIG. 1 includes that the step of raising the first power to the second power and then making a double determination again is no longer included in the present embodiment, that is, when the result of the double determination in the third step is yes, the fourth step is skipped and the fifth step is directly executed. For example, the first power value can be 10% of the limit power value, or 20% or 50% or 60% of the limit power value.

[0073] In another embodiment of the present application, an ultrasonic scalpel is provided, as shown in FIG. 3, which includes a handle and a blade head, the handle is provided with a transducer, a master control module and a first communication module, the master control module determines whether the blade head of the ultrasonic scalpel is installed in place by using the detection method as described above.

[0074] The blade head is provided with a second communication module and a storage module, the storage module is written with the impedance value of the blade head; in response to the first communication module and the second communication module being switched from a disconnected state to a connected state, the master control module controls to excite the transducer at a first power;

[0075] If the current working frequency of the ultrasonic scalpel exceeds the resonance frequency tolerance range, or the current impedance of the ultrasonic scalpel exceeds the preset impedance limit value, it is determined that the blade head of the ultrasonic scalpel is not installed in place, wherein the impedance limit value is determined according to the impedance value written in the storage module and a preset rule.

[0076] The master control module pre-stores a rated power of the ultrasonic scalpel, and determines the first power as n% of the rated power, n is a real number less than 100, for example, n = 10;

[0077] If the current working frequency of the ultrasonic scalpel is within the resonance frequency tolerance range, and the current impedance of the ultrasonic scalpel is less than or equal to the impedance limit value, the first power is gradually increased without exceeding the preset limit power, and the current working frequency or the current impedance is repeatedly determined, wherein the limit power is determined according to the rated power and a preset rule;

[0078] If the current working frequency exceeds the resonance frequency tolerance range, or the current impedance exceeds the preset impedance limit value, it is determined that the blade head of the ultrasonic scalpel is not installed in place.

[0079] In a case where it is unable to be determined that the blade head of the ultrasonic scalpel is not installed in place, the transducer is excited at a preset limit power greater than or equal to the rated power, and the current operating frequency or the current impedance is determined multiple times within a preset time period;

[0080] If the current operating frequency is within the resonance frequency tolerance range and the current impedance is less than or equal to the impedance limit value in the multiple determinations within the preset time period, it is determined that the blade head of the ultrasonic scalpel is installed in place, otherwise it is determined that the blade head of the ultrasonic scalpel is not installed in place.

[0081] The inventive concept of the ultrasonic scalpel performing the blade head self-checking function in the present application is the same as that of the above two detection method embodiments, and the entire contents of the detection method embodiments are incorporated into the ultrasonic scalpel embodiments by reference.

[0082] It should be noted that, in the present document, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0083] The above is only a specific embodiment of the present application, and it should be noted that for ordinary skilled persons in the technical field, several improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. [Corrected according to Rule 91 on 17.12.2024] A method for detecting the installation of a blade head of an ultrasonic scalpel, characterized in that, The installation of the blade head of the ultrasonic scalpel is detected by the following steps: If the blade head of the ultrasonic scalpel is identified to be switched from a separated state to a connected state, the transducer of the ultrasonic scalpel is excited at a first power, wherein the first power is less than the rated power of the ultrasonic scalpel; If the current working frequency of the ultrasonic scalpel is out of the resonance frequency tolerance range, or the current impedance of the ultrasonic scalpel is greater than the preset impedance limit value, it is determined that the blade head of the ultrasonic scalpel is not installed properly; If the current working frequency of the ultrasonic scalpel is within the resonance frequency tolerance range, and the current impedance of the ultrasonic scalpel is less than or equal to the preset impedance limit value, the transducer of the ultrasonic scalpel is excited at a second power, wherein the second power is greater than the first power, and the second power is less than the rated power of the ultrasonic scalpel; and then it is determined that the blade head of the ultrasonic scalpel is not installed properly if the current working frequency of the ultrasonic scalpel is out of the resonance frequency tolerance range, or the current impedance of the ultrasonic scalpel is greater than the preset impedance limit value.

2. [Amended according to Rule 91, 17.12.2024] The method of detecting the installation of a blade head of an ultrasonic surgical knife according to claim 1, characterized in that, If the last determination result is that the current working frequency of the ultrasonic scalpel is within the resonance frequency tolerance range, and the current impedance of the ultrasonic scalpel is less than or equal to the preset impedance limit value, the second power is gradually increased without exceeding the preset limit power, wherein the limit power is greater than or equal to the rated power; Then it is determined that the blade head of the ultrasonic scalpel is not installed properly if the current working frequency of the ultrasonic scalpel is out of the resonance frequency tolerance range, or the current impedance of the ultrasonic scalpel is greater than the preset impedance limit value, and the detection program is exited.

3. [Amended according to Rule 91 on 17.12.2024] The method of detecting the installation of a blade head of an ultrasonic surgical knife according to claim 1, characterized in that, The handle and the blade head of the ultrasonic scalpel are respectively provided with a communication module or a sensing module, and when the handle is connected with the transducer, a first communication state or a first sensing state is recorded; if the blade head is separated from the transducer, a second communication state or a second sensing state is recorded; if the second communication state is switched to the first communication state, or the second sensing state is switched to the first sensing state, a trigger signal is generated to control the transducer of the ultrasonic scalpel to be excited at the first power.

4. [Amended according to Rule 91 on 17.12.2024] The method of detecting the installation of a blade head of an ultrasonic surgical knife according to claim 1, characterized in that, The blade head is provided with a storage module configured to store a corresponding impedance value; The impedance value in the storage module is read, and the preset impedance limit value is determined according to a preset rule, wherein the impedance limit value is greater than or equal to the impedance value written in the storage module.

5. [Amended according to Rule 91 on 17.12.2024] The method of detecting the installation of a blade head of an ultrasonic surgical knife according to claim 1, characterized in that, Firstly, it is determined whether the current working frequency of the ultrasonic scalpel is within the resonance frequency tolerance range, and if the determination result is no, it is directly determined that the blade head of the ultrasonic scalpel is not installed properly; otherwise, it is determined whether the current impedance of the ultrasonic scalpel is less than or equal to the preset impedance limit value, and if the determination result is no, it is determined that the blade head of the ultrasonic scalpel is not installed properly.

6. [Amended according to Rule 91 on 17.12.2024] The method of detecting the installation of a blade head of an ultrasonic surgical knife according to claim 1, characterized in that, The method comprises: determining whether the current impedance of the ultrasonic scalpel is less than or equal to a preset impedance limit value; if the determination result is no, it is directly determined that the blade head of the ultrasonic scalpel is not installed in place; otherwise, it is further determined whether the current working frequency of the ultrasonic scalpel is within a resonance frequency tolerance range; if the determination result is no, it is determined that the blade head of the ultrasonic scalpel is not installed in place.

7. [Amended according to Rule 91 on 17.12.2024] The blade attachment detection method of the ultrasonic surgical knife according to any one of claims 1 to 6, characterized in that, If the determination result of the last time is that the current working frequency of the ultrasonic scalpel is within the resonance frequency tolerance range and the current impedance of the ultrasonic scalpel is less than or equal to the preset impedance limit value, the transducer of the ultrasonic scalpel is excited at a third power, wherein the third power is a preset limit power, and the limit power is greater than or equal to the rated power. If the determination result of the last time is that the current working frequency of the ultrasonic scalpel is within the resonance frequency tolerance range and the current impedance of the ultrasonic scalpel is less than or equal to the preset impedance limit value, the transducer of the ultrasonic scalpel is excited at a third power, wherein the third power is a preset limit power, and the limit power is greater than or equal to the rated power.

8. [Amended according to Rule 91, 17.12.2024] The method of detecting the installation of a blade head of an ultrasonic surgical knife according to claim 7, characterized in that, During the process of exciting the transducer of the ultrasonic scalpel at the first power or the third power, the blade head is kept unloaded. Alternatively, the blade head is kept unloaded before it is determined that the blade head of the ultrasonic scalpel is installed in place.

9. [Amended according to Rule 91, EPC 17.12.2024] The method of claim 7, wherein the method further comprises: If the blade head is detected to be loaded before it is determined that the blade head is installed in place, the energy excitation to the transducer is interrupted or terminated.

10. [Amended according to Rule 91 on 17.12.2024] The method of detecting the installation of a blade head of an ultrasonic surgical knife according to claim 7, characterized in that, The preset time period is greater than or equal to 3s. And / or, if it is determined that the blade head of the ultrasonic scalpel is not installed in place, a prompt device is used to prompt to check the installation of the blade head.

11. [Corrected pursuant to Rule 91 - 17.12.2024] An ultrasonic scalpel, characterized in that, The ultrasonic scalpel comprises a handle and a blade head, the handle is provided with a transducer and a main control module, and the main control module determines whether the blade head of the ultrasonic scalpel is installed in place by using the detection method in any one of claims 1 to 10.

12. [Amended according to Rule 91 on 17.12.2024] The ultrasonic scalpel according to claim 11, characterized in that, The handle is further provided with a first communication module, the blade head is provided with a second communication module and a storage module, and the storage module is written with the impedance value of the blade head. In response to the first communication module and the second communication module being switched from a disconnected state to a connected state, the main control module controls the transducer to be excited at the first power.

13. [Amended according to Rule 91 on 17.12.2024] The ultrasonic scalpel according to claim 12, characterized in that, If the current working frequency of the ultrasonic scalpel exceeds the resonance frequency tolerance range or the current impedance of the ultrasonic scalpel exceeds the preset impedance limit value, it is determined that the blade head of the ultrasonic scalpel is not installed in place, wherein the impedance limit value is determined according to the impedance value written in the storage module and a preset rule.

14. [Amended according to Rule 91 on 17.12.2024] The ultrasonic scalpel according to claim 13, characterized in that, The main control module pre-stores the rated power of the ultrasonic scalpel, and determines that the first power is n% of the rated power, n being a real number less than 100; If the current working frequency of the ultrasonic scalpel is within the resonance frequency tolerance range and the current impedance of the ultrasonic scalpel is less than or equal to the impedance limit value, the first power is gradually increased without exceeding the preset limit power, and the current working frequency or the current impedance is repeatedly determined, wherein the limit power is determined according to the rated power and a preset rule. If the current operating frequency is out of the resonance frequency tolerance range, or the current impedance exceeds the preset impedance limit value, it is determined that the blade of the ultrasonic scalpel is not installed in place.

15. [Amended according to Rule 91 on 17.12.2024] The ultrasonic scalpel according to any one of claims 11 to 14, characterized in that, In the case where it is not determined that the blade of the ultrasonic scalpel is not installed in place, the transducer is excited at a preset limit power greater than or equal to the rated power, and the current operating frequency or the current impedance is determined multiple times within a preset time period. If the current operating frequency is within the resonance frequency tolerance range and the current impedance is less than or equal to the impedance limit value in the multiple determinations within the preset time period, it is determined that the blade of the ultrasonic scalpel is installed in place, otherwise it is determined that the blade of the ultrasonic scalpel is not installed in place.

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