Root canal treatment handset, root canal treatment file needle wear data acquisition method, root canal treatment doctor preparation process optimization suggestion generation method and computer program product

Abstract

This application relates to the field of root canal treatment, and particularly to a root canal treatment handpiece, a method for acquiring root canal treatment file wear data, and a method and program product for generating suggestions to optimize the root canal treatment physician's preparation process. The root canal treatment handpiece includes: a handpiece body; a main shaft, disposed on the handpiece body, for connecting the root canal treatment file to drive the file to rotate; a holder, the holder including: a clamping part, a cylindrical sidewall corresponding to the main shaft, the sidewall for accommodating the file; and a sensing component for monitoring the state changes of the sidewall caused by the force exerted by the file, to acquire wear data of the file. Through the proximal sensing design of the hardware structure, the real-time conversion of the data acquisition method, and the multi-dimensional comprehensive processing of the optimization suggestion method, this invention achieves comprehensive technical advantages in high-precision monitoring, dynamic risk assessment, and intelligent operation guidance of the root canal treatment process.

Description

Technical Field

[0001] This patent relates to the field of medical device technology, specifically to a root canal treatment handpiece, a method for acquiring root canal treatment file wear data, a method for generating suggestions to optimize the root canal treatment physician's preparation process, and a computer program product. Background Technology

[0002] Root canal treatment is a primary treatment for pulpitis and periapical periodontitis, with root canal preparation being a crucial step. This typically involves using a root canal handpiece to drive files within the root canal for cutting and shaping. During treatment, the files wear down due to repeated mechanical stress and chemical corrosion, and may even break. Therefore, monitoring the wear condition of the files is essential for ensuring treatment safety. Current root canal handpieces generally consist of a handpiece body and a spindle, with the spindle connecting and rotating the files.

[0003] However, existing technologies for monitoring file wear often rely on recording the number of times the file is used, the duration of use, or indirect estimations based on the motor's load current. This indirect monitoring method results in a lag in the acquisition of wear data. Summary of the Invention

[0004] To solve, or at least partially solve, the above-mentioned technical problems, the present invention provides a root canal treatment handpiece, comprising: The main body of the mobile phone; A main shaft, located on the main body of the handpiece, is used to connect the root canal treatment file to drive the file to rotate; A gripper, the gripper comprising: The clamping part has a cylindrical sidewall corresponding to the main shaft, and the sidewall is used to accommodate the file needle; A sensing component is used to monitor the state changes of the sidewall caused by the force exerted by the file needle, so as to obtain wear data of the file needle.

[0005] The above technical solution enables direct and real-time acquisition of file wear data at the mobile phone clamping end, eliminating transmission chain interference and significantly improving the accuracy of wear characterization.

[0006] Optionally, the sidewall has an elastic deformation zone that undergoes elastic deformation when subjected to the force of the file needle; the sensing component is used to monitor the state changes of the elastic deformation zone.

[0007] By setting up an elastic deformation zone as a universal medium for force transmission, it can be adapted to various types of sensors for signal acquisition, thereby improving the compatibility of the monitoring system and its adaptability to different sensing principles.

[0008] Optionally, the sensing component includes a plurality of resistance strain gauges spaced circumferentially along the elastic deformation region; the number of resistance strain gauges is a multiple of four, and each of the resistance strain gauges forms a full-bridge circuit.

[0009] By employing resistance strain gauges and a full-bridge circuit, it features fast response speed, good linearity, and is suitable for continuous stress monitoring, while also exhibiting high signal stability.

[0010] Optionally, the clamping part has a hollow cavity, and the resistance strain gauge is disposed within the cavity and closely attached to the elastic deformation zone. This internal integration protects the strain gauge from direct external interference, while the cavity structure enhances overall rigidity and protective effect.

[0011] Optionally, the clamping part has a hollow cavity filled with a fluid medium, and the sensing component includes a pressure sensor disposed within the fluid medium. This achieves potential isolation between the sensor and the rotating component, improving the system's durability and safety.

[0012] Optionally, the elastic deformation zone is a flexible film, and a gap is reserved between the flexible film and the surface of the file needle, and the gap is filled with a biocompatible lubricant.

[0013] By optimizing the flexible interface, the problem of frictional heat generation between rotating components is alleviated, the service life of the flexible film is extended, and the safety of patients during treatment is improved.

[0014] Optionally, the elastic deformation region includes: A rigid sleeve forms the surface of the sidewall; Elastic rings 52 are disposed at both ends of the rigid sleeve and connect the rigid sleeve to the rest of the clamping part, so that when the rigid sleeve is subjected to impact, the vibration can be transmitted to the sensing component through the elastic rings 52.

[0015] By adopting a rigid sleeve suspension structure, the mechanical strength of the sensor head is significantly improved.

[0016] Another aspect of the present invention provides a method for acquiring wear data of root canal treatment files, comprising: monitoring the state changes of the cylindrical sidewall of the holder caused by the force of the file through a sensing component, so as to acquire wear data of the file; The sidewall is positioned on the main shaft of the root canal treatment handpiece to accommodate the file, and the sidewall is located on the clamping part of the holder.

[0017] The above methods establish the methodological foundation for acquiring wear data, ensuring the physical authenticity and real-time nature of the data source.

[0018] Optionally, the monitoring step includes: monitoring the voltage change signal output by the resistance strain gauge attached to the sidewall surface; Alternatively, the pressure change signal of the fluid medium filling the hollow cavity of the clamping part can be monitored, the pressure change signal being generated by the compression of the sidewall.

[0019] By providing two parallel technical solutions—electrical and liquid measurement—the method not only meets the need for high-precision continuous monitoring but also offers an alternative that is resistant to electromagnetic interference and does not require rotating electrical connections, thus enhancing the flexibility of implementation and environmental adaptability.

[0020] Another aspect of the present invention provides a method for generating suggestions to optimize the preparation process for root canal treatment, the method comprising: The working data of the motor of the root canal treatment handpiece is obtained during a first time period, which contains N time nodes, where N is a natural number greater than or equal to 1. The wear data of the file assembly at each of the aforementioned time points is obtained respectively; The wear data is obtained by monitoring the state changes of the cylindrical sidewall of the holder caused by the force of the file needle through the sensing component. The sidewall is set in accordance with the main shaft of the root canal treatment handpiece to accommodate the file needle, and the sidewall is located on the clamping part of the holder. Medical data on the treatment progress of the root canal at each of the aforementioned time points were obtained. Based on the combined operational data, wear data, and medical data, operational optimization suggestions are generated.

[0021] The above methods enable real-time, dynamic operation optimization based on actual wear conditions, significantly reducing the risk of instrument separation and improving the safety and efficiency of root canal preparation.

[0022] Optionally, the wear data is obtained by converting the elastic deformation signal detected by the resistance strain gauge through a fatigue accumulation model, wherein the resistance strain gauge is attached to the cylindrical sidewall of the clamp.

[0023] By establishing a specific mapping path from physical signals to wear indicators, the physical authenticity and accessibility of wear data sources are ensured, thus solving the problem of real-time monitoring of microscopic data.

[0024] Optionally, the wear data is obtained by converting the pressure signal measured by the pressure sensor located in the fluid medium through a fatigue accumulation model, and the clamping part has a hollow cavity, in which the fluid medium is filled.

[0025] By utilizing a fluid medium to transmit the pressure changes caused by the force of the filing needle, the problem of direct electrical connection between the sensor and the rotating parts is avoided. At the same time, pressure signals can be captured to warn of wear, thus improving the durability and safety of the system.

[0026] Optionally, generating the operation optimization suggestions includes: Generate a rectangular coordinate system diagram of the motor's operation; Based on the rectangular coordinate system diagram of the motor's operation, generate a graph of the motor's operating function; Generate a wear rectangular coordinate system diagram; based on the wear rectangular coordinate system diagram, generate a wear function image; The intervals formed by the time nodes corresponding to the absolute values ​​of the slopes in the motor working function image and the wear function image that are less than a first preset value are obtained respectively, and the intersection of the intervals formed by the time nodes is taken to generate an intersection interval. The working data of the motor and the wear data of the file corresponding to the intersection interval are obtained respectively, and respectively calibrated as the corresponding preset standard values; Generate a medical rectangular coordinate system graph; generate a medical function graph based on the medical rectangular coordinate system graph; In the medical function image, the intervals of time nodes where the absolute value of the slope of the function image is greater than a second preset value are obtained and marked as the optimal recovery intervals; The optimal recovery interval and the intersection interval are intersected twice, and the optimal preset standard value is generated for the motor working data, wear data and medical data corresponding to the time nodes within the second intersection.

[0027] By utilizing the slope of a function graph to represent the rate of change, a dynamic safety assessment method based on trend stability is provided, which can identify a safe window for smooth operation and suitable for recovery, guiding doctors to prepare in the best possible condition.

[0028] Optionally, the step of generating operational optimization suggestions by integrating the working data, the wear data, and the medical data may include any one or a combination of the following comparison results: The central tendency parameter value of the motor during the first time period is compared with the preset standard value of torque; The central tendency parameter value of the motor during the first time period is compared with the preset standard value of the rotational speed; The central tendency parameter value of the motor during the first time period is compared with the preset standard value of the voltage; The central tendency parameter value of the motor during the first time period is compared with the preset standard value of the pressure; The roughness data, wear data, and corrosion mark quantity data of the file at the corresponding time point are compared with preset standard data; the operation tendency is determined based on the comparison results, and optimization suggestions are given based on the operation tendency.

[0029] By employing multiple logics and judgments based on motor load and file wear, the accuracy and safety of operation optimization suggestions are improved, ensuring that corresponding suggestions are only generated under specific risk combinations, thus balancing treatment efficiency and safety.

[0030] Another aspect of the present invention provides a computer program product having a computing program that, when executed, can implement the aforementioned method.

[0031] The aforementioned products enable the software-based implementation of methodological steps, facilitating deployment and operation on different computing devices and improving the portability and ease of implementation of technical solutions.

[0032] In summary, this invention, through the combination of technical solutions defined in its claims, systematically solves the problem in existing technologies where the inability to directly monitor the actual force state of the file at the clamping end leads to delayed or inaccurate wear data acquisition. Through proximal sensing design in the hardware structure, real-time conversion of data acquisition methods, and multi-dimensional comprehensive processing of optimization suggestion methods, this invention achieves comprehensive technical advantages in high-precision monitoring, dynamic risk assessment, and intelligent operation guidance during root canal treatment. Attached Figure Description

[0033] To more clearly illustrate the embodiments of this application, the relevant drawings will be briefly described below. It is understood that the drawings described below are only for illustrating some embodiments of this application, and those skilled in the art can obtain many other technical features and connections not mentioned herein based on these drawings.

[0034] Figure 1 This is a cross-sectional schematic diagram of a root canal treatment handpiece structure according to an embodiment of this application; Figure 2 This is a partial cross-sectional schematic diagram of the clamping portion of a root canal treatment handpiece structure according to an embodiment of this application; Figure 3 This is a cross-sectional schematic diagram of another root canal treatment handpiece structure according to an embodiment of this application; Figure 4 This is a partial cross-sectional schematic diagram of the clamping portion of another root canal treatment handpiece structure according to an embodiment of this application; Figure 5 This is a cross-sectional schematic diagram of another root canal treatment handpiece structure according to an embodiment of this application; Figure 6This is a partial longitudinal cross-sectional schematic diagram of the clamping portion of another root canal treatment handpiece structure according to an embodiment of this application; Figure 7 This is a flowchart illustrating a method for generating suggestions to optimize the preparation process for root canal treatment, according to an embodiment of this application. Figure 8 This is a flowchart illustrating the analysis process of a method for generating suggestions to optimize the preparation process for root canal treatment, according to an embodiment of this application. Figure 9 This is a flowchart illustrating the analysis process of another method for generating suggestions to optimize the root canal treatment physician preparation process, as described in this application.

[0035] Explanation of reference numerals in the attached figures: 1. Mobile phone body; 2. Spindle; 3. Clamp; 31. Clamping part; 311. Cavity; 4. File needle; 5. Elastic deformation zone; 51. Rigid sleeve; 52. Elastic ring; 6. Sensing component; 61. Resistance strain gauge; 62. Pressure sensor. Detailed Implementation

[0036] The present application will now be described in detail with reference to the accompanying drawings.

[0037] Root canal treatment is a common and crucial method in dentistry for treating pulpitis and periapical periodontitis. Its core objective is to prevent reinfection and promote tooth healing and functional restoration by thoroughly removing infected material from the root canal, filling it, and then filling the canal. During root canal treatment, dentists typically use files and root canal instruments to clean and shape the canal. This process requires extremely high precision.

[0038] However, there are significant differences in the techniques used by different doctors, especially in the force applied when manipulating files with root canal instruments. These differences directly affect the degree of file wear and the final treatment outcome. Root canal walls are usually very thin and irregular in shape. Excessive cutting or accidental instrument breakage can lead to serious complications, such as lateral perforation, floor perforation, or instrument separation remaining in the root canal.

[0039] Therefore, real-time and accurate monitoring of the working status of the file, especially its wear and fatigue accumulation, is crucial for ensuring treatment safety and improving the success rate.

[0040] US Patent No. US20250017690A1 discloses an indirect monitoring mechanism based on motor load feedback. This scheme infers the force exerted on the file within the root canal by monitoring changes in the current, torque, or speed of the drive motor. Specifically, when the file encounters resistance or friction during cutting within the root canal, the motor load increases, and the control system adjusts its output accordingly or issues a warning to the physician. Structurally, this scheme relies on the electrical signal transmission between the motor and the control unit, converting the mechanical action of the distal handpiece tip into changes in electrical parameters at the proximal motor for analysis.

[0041] However, this approach has inherent technical limitations in principle. First, the motor load signal is a highly integrated composite signal. It not only includes the characteristics of the interaction between the file and the root canal wall, but also inevitably mixes in the mechanical losses of the internal transmission chain of the machine, such as gear sets and bearings, vibration noise caused by transmission clearances, and electromagnetic fluctuations of the motor itself. This long transmission chain results in a low signal-to-noise ratio of the final acquired data, making it difficult to extract the weak characteristic signals reflecting the true wear state of the file tip from the complex background noise. This directly leads to the lag and ambiguity of wear assessment. Often, the system can only detect obvious load anomalies when the file has already undergone significant plastic deformation or even developed microcracks, at which point the warning is too late.

[0042] Furthermore, this indirect monitoring method cannot distinguish between normal cutting resistance and the risk of abnormal jamming. In the complex anatomy of the root canal, the resistance experienced by the file itself changes dynamically with the cutting depth and angle. Due to the lack of direct perception of the stress state of the file itself, existing systems struggle to set a universal and accurate threshold to distinguish between normal cutting loads and the critical stress state that will lead to instrument separation. For safety reasons, physicians often have to adopt conservative operating strategies, frequently changing files or reducing cutting efficiency, which to some extent sacrifices treatment efficiency; conversely, relying on inaccurate indirect signals may lead to missing the best intervention opportunity to prevent instrument breakage, resulting in medical accidents.

[0043] Based on the existing technology described above, those skilled in the art might consider improving the problem by increasing sensor sensitivity or optimizing signal filtering algorithms. For example, installing a higher-precision current sensor at the motor end, or introducing a more complex machine learning model to identify the load waveform. However, this approach fails to address the root cause of the problem: the physical location of the signal source is too far from the actual point of force application where the file contacts the root canal. No matter how optimized the backend algorithm is, it cannot restore the original mechanical information that has been lost or distorted during long-distance mechanical transmission. Furthermore, over-reliance on complex signal processing not only increases the computational burden and cost of the system but may also introduce new risks of algorithmic misjudgment, failing to fundamentally solve the problem of missing proximal sensing.

[0044] In view of this, embodiments of the present invention aim to provide a root canal treatment handpiece and related methods, by directly integrating the sensing components into the holder part near the file, in order to solve or at least partially alleviate the above-mentioned technical problems of delayed acquisition of wear data, insufficient accuracy, and inability to distinguish between normal cutting and abnormal jamming in real time due to transmission chain interference.

[0045] First Implementation Method This embodiment provides a root canal treatment handpiece, as referenced. Figure 1 As shown in Figure 1, the core improvement lies in directly integrating the sensing component 6 into the clamping part near the file 4 to achieve direct monitoring of the wear state of the file 4. The root canal treatment handpiece may include a handpiece body 1, a spindle 2 disposed within the handpiece body 1, and a clamp 3 connected to the end of the spindle 2. The spindle 2 is used to connect the root canal treatment file 4 and drive the file 4 to rotate, while the clamp 3 is used to securely clamp the shank of the file 4.

[0046] In one specific embodiment, see Figure 2 As shown, the clamp 3 may include a clamping portion 31 having a cylindrical sidewall corresponding to the spindle 2. The sidewall is configured to accommodate the file 4, thereby bearing the mechanical force transmitted from the file 4 during its rotational cutting. To acquire wear data of the file 4, the clamp 3 may also include a sensing component 6 for monitoring changes in the state of the sidewall caused by the force exerted by the file 4. For example, when the file 4 encounters resistance or wears during cutting within the root canal, its stress state changes, and this change is transmitted to the sidewall, causing minute deformation or stress distribution changes. The sensing component 6 is configured to capture this change and convert it into an electrical or digital signal.

[0047] Furthermore, to unify the physical basis of different sensing principles, the sidewall may have an elastic deformation zone 5. The elastic deformation zone 5 is configured to undergo elastic deformation when subjected to the force of the file 4, thereby converting the mechanical state into a detectable physical quantity. The sensing component 6 can then specifically monitor the state changes of the elastic deformation zone 5, thereby acquiring signals based on the deformation, pressure, or vibration state of the elastic deformation zone 5.

[0048] In one feasible implementation, the sensing component 6 may include a plurality of resistance strain gauges 61 spaced circumferentially along the elastic deformation region 5. The resistance strain gauges 61 can directly convert the microscopic deformation of the elastic deformation region 5 into a resistance change signal using the strain effect. To improve the signal-to-noise ratio and counteract temperature drift and interference from non-target directions, the number of resistance strain gauges 61 may be a multiple of four, and the individual resistance strain gauges 61 may form a full-bridge circuit.

[0049] In addition, refer to Figure 3 , Figure 4 As shown, in another specific structural example, the clamping part 31 can have a hollow cavity 311, and the resistance strain gauge 61 can be disposed within the cavity 311 and closely attached to the elastic deformation zone 5. This internal integration method can protect the strain gauge from direct external interference, while the cavity 311 structure enhances the overall rigidity and protection. In a preferred embodiment, when it is necessary to monitor asymmetric loads or eliminate the effects of eccentric bending, the resistance strain gauge can be set to eight, divided into two groups of full-bridge circuits; the first group of full-bridge circuits is uniformly distributed along the circumference of the elastic deformation zone 5 to monitor axial stress, and the second group of full-bridge circuits is staggered relative to the first group to monitor bending stress. The output signals of the two groups of full-bridge circuits are differentially processed, thereby eliminating lateral force interference caused by uneven doctor operation techniques while acquiring wear data.

[0050] To support the specific implementation of the above structure, in a specific parameter example, the wall thickness of the elastic deformation region 5 can be set to 0.3 mm to 0.5 mm, and the material can be medical-grade titanium alloy TC4 to ensure sufficient elastic deformation capacity and biocompatibility. The resistance of the strain gauge 61 can be, for example, 120 Ω, and the sensitivity coefficient can be 2.0 to 2.2. Furthermore, to prevent liquids in the oral environment from eroding the strain gauge, the surface of the strain gauge can also be coated with an insulating coating. The material of this insulating coating can be, for example, parylene, and the thickness can be 5 μm to 10 μm. These specific parameter selections aim to optimize the sensitivity and stability of signal transmission; however, those skilled in the art will understand that other materials or parameter ranges with similar functions are also within the scope of consideration in this technical solution.

[0051] In another feasible implementation, the sensing component 6 can also be implemented based on the principle of fluid pressure. Specifically, see [link to relevant documentation]. Figure 5 As shown, the clamping part 31 may have a hollow cavity 311, which may be filled with a fluid medium. The sensing component 6 may include a pressure sensor 62 disposed within the fluid medium. Utilizing the pressure conduction characteristics of the fluid medium, the deformation of the elastic deformation zone 5 can be converted into a change in fluid pressure. The pressure sensor 62 can indirectly infer the force state of the file needle 4 by detecting the change in fluid pressure. This approach can achieve potential isolation between the sensor and the rotating component, improving the durability and safety of the system.

[0052] To optimize the flexible interface of the fluid pressure-based solution, in a specific structural example, the elastic deformation zone 5 can be a flexible film. A gap can be provided between the flexible film and the surface of the file 4, and this gap can be filled with a biocompatible lubricant. For example, in a non-stressed state, the flexible film and the file 4 remain in contact to prevent frictional heat generation; under stress, the film transmits pressure to the fluid medium. The lubricant can reduce the coefficient of friction during contact and ensure biocompatibility. In a specific parameter example, the fluid medium can be medical-grade silicone oil with a viscosity of, for example, 1000 cSt. The flexible film material can be medical-grade polyurethane with a hardness of, for example, Shore A 85-95 and a thickness of 0.15 mm. The reserved gap width can be, for example, 0.05 mm to 0.1 mm, and the lubricant can be perfluoropolyether, thereby extending the service life of the flexible film and improving patient safety during treatment.

[0053] In another feasible implementation, to provide a more robust solution for capturing high-frequency fracture signals, see [link to relevant documentation]. Figure 6 As shown, the elastic deformation zone 5 can also include a rigid sleeve 51 and an elastic ring 52 suspension structure. The rigid sleeve 51 can form the surface of the sidewall, and the elastic ring 52 can be disposed at both ends of the rigid sleeve 51, connecting the rigid sleeve 51 to the rest of the clamping part 31. In this way, when the rigid sleeve 51 is impacted, the vibration can be transmitted to the sensing component 6 through the elastic ring 52. The rigid sleeve 51 can be made of ceramic, such as zirconia ceramic, to significantly improve its wear resistance. The sensing component 6 can be any of the previously mentioned resistance strain gauges or pressure sensors. Under this premise, the base of the file 4 can be set close to the rigid sleeve 51, thereby significantly improving the measurement sensitivity and enabling it to have a better ability to provide early warning of the risk of sudden breakage of the file 4.

[0054] Furthermore, regarding how to distinguish between normal cutting and abnormal jamming, the embodiments of this application provide the following exemplary explanation: Under normal cutting conditions, i.e., when the cutting edge intermittently cuts dentin, the signal collected by the sensing component 6 exhibits high-frequency, low-amplitude periodic fluctuations, with its spectral energy mainly concentrated in the 200Hz-800Hz frequency band, and the time-domain waveform has a stable envelope. However, when abnormal jamming occurs, such as when the instrument becomes embedded in the root canal wall or when a step-like obstruction occurs, the signal characteristics will abruptly change to a low-frequency, high-amplitude continuous DC offset or a severe transient impact pulse, with its spectral energy often significantly shifting below 50Hz and its amplitude exceeding three times the peak value of normal cutting.

[0055] The sensing component 6 of this application can work with the back-end processing module to analyze the frequency domain energy distribution ratio of the signal using various algorithms in the prior art, such as real-time fast Fourier transform (FFT). Combined with the time domain peak detection algorithm, when a sudden increase in the low-frequency energy ratio and the instantaneous amplitude exceeding the preset safety threshold are detected, it can be determined as an abnormal jam and immediately trigger a stop or reverse command. This solves the problem of delayed early warning caused by the inability of the prior art to distinguish between the two at the physical level.

[0056] In summary, the root canal treatment handpiece provided in this embodiment, by integrating the sensing component 6 into the side wall of the holder 3, achieves direct and real-time acquisition of wear data of the file 4 at the handpiece clamping end. Compared with the indirect monitoring method relying on motor load in the prior art, this solution eliminates transmission chain interference and significantly improves the accuracy of wear characterization. Furthermore, by providing various specific implementation variations such as strain gauge type, fluid pressure type, and rigid suspension type, this solution can adapt to different clinical application needs, ensuring monitoring accuracy while also considering the system's durability, safety, and high-frequency signal capture capability.

[0057] Second Implementation Method This embodiment provides a method for acquiring wear data of root canal treatment files, which can be executed based on the root canal treatment handpiece hardware platform described in the first embodiment. This method transforms hardware monitoring capabilities into executable data acquisition steps, ensuring real-time online acquisition of wear data.

[0058] In one specific embodiment, the method may include: The step of obtaining wear data of the file needle 4 by monitoring the state changes of the cylindrical sidewall of the holder 3 under the force of the file needle 4 through the sensing component 6.

[0059] The sidewall is positioned corresponding to the main shaft 2 of the root canal treatment handpiece to accommodate the file 4, and the sidewall is located on the clamping part 31 of the holder 3. This monitoring step establishes the methodological basis for wear data acquisition, ensuring the physical authenticity and real-time nature of the data source.

[0060] Specifically, the monitoring process can include two parallel technical paths to accommodate different hardware configurations. In one path, The voltage change signal output by the resistance strain gauge 61 attached to the sidewall surface can be monitored. Through an electrical conversion path, the elastic deformation of the sidewall is directly quantified into a voltage signal. In another path: The pressure change signal of the fluid medium filled in the hollow cavity 311 of the clamping part 31 is monitored. The pressure change signal is generated by the compression of the sidewall. Through a hydraulic conversion path, the mechanical compression of the sidewall is converted into a fluid pressure signal. These two paths not only meet the requirements of high-precision continuous monitoring, but also provide an alternative that is resistant to electromagnetic interference and does not require rotating electrical connections, thus enhancing the implementation flexibility and environmental adaptability of the method.

[0061] To convert the monitored physical signals into clinically meaningful wear data, in a specific algorithm implementation example, the wear data can be obtained by converting the detected signals using a fatigue accumulation model. For example, when using a resistance strain gauge 61, the wear data can be obtained by converting the elastic deformation signal detected by the resistance strain gauge 61, which is attached to the cylindrical sidewall of the clamp 3, using a fatigue accumulation model. When using a fluid pressure sensor 62, the wear data can be obtained by converting the pressure signal measured by the pressure sensor 62 located in the fluid medium using a fatigue accumulation model. The clamp 31 has a hollow cavity 311, which is filled with fluid medium.

[0062] Furthermore, to support the feasibility and accuracy of wear data, a stress-wear mapping algorithm based on Miner's linear cumulative damage theory can be employed. In this algorithm, the real-time damage degree D = Σ(n i / N i ), where n i N represents the current stress cycle number. i This represents the number of failure cycles under the current stress level. Based on this damage level, indicators such as the file 4 health index, stiffness drift rate, or high-frequency vibration energy can be output. These indicators provide doctors with intuitive quantitative references. Furthermore, to eliminate the influence of environmental factors such as temperature drift, zero-point calibration can be performed before use. For example, the sensor baseline value can be recorded with the file 4 uninserted or in a free-floating state, and subsequent monitoring data can be corrected relative to this baseline value.

[0063] In terms of signal processing and interference suppression, various signal conditioning measures can be employed to ensure signal transmission quality under high-speed rotation. For example, a low-pass filter can be added to the signal conditioning circuit, with a cutoff frequency set to, for example, 500Hz, to filter out high-frequency noise. In software algorithms, abnormal jump points can be eliminated to smooth the data curve. For fluid pressure-based solutions, the fluid filling process can be carried out in a vacuum environment to avoid air bubbles causing pressure transmission distortion.

[0064] In summary, the data acquisition method provided in this embodiment achieves real-time online acquisition of wear data by defining specific monitoring steps and signal conversion paths. Combined with specific algorithm models and signal processing strategies, this method not only ensures the physical authenticity of the data but also improves its accuracy and reliability, laying a solid data foundation for subsequent treatment optimization recommendations.

[0065] Third Implementation Method This embodiment provides a method for generating suggestions to optimize the preparation process of root canal treatment, aiming to solve the problems in existing technologies where inconsistent treatment results, premature failure of the file 4, and high risk of instrument separation are caused by the inability to fully reflect the characteristics of the doctor's operating techniques. This method, through in-depth analysis of the specific parameters of the root canal instrument motor, the wear degree of the file 4, and the treatment effect during root canal treatment, allows the system to accurately predict the doctor's operating tendencies and provide targeted optimization suggestions.

[0066] refer to Figure 7 As shown in one specific embodiment, the method may include the following steps: S01. Obtain the working data of the root canal motor during the first time period. The first time period contains N time nodes, where N is a natural number greater than or equal to 1.

[0067] S02. Obtain the wear data of the file 4 component at each time point.

[0068] S03. Obtain medical data on the treatment progress of the root canal at each time point.

[0069] S04. Integrate working data, wear data, and medical data to generate operational optimization suggestions.

[0070] During root canal treatment, the motor of the root canal instrument rotates, driving the file 4 to polish and treat the target tooth. Because different dentists develop their own usage habits when using the instrument, the file 4 contacts the target tooth at different angles. The contact angle and contact point between the file 4 and the tooth directly affect the force and wear on the file 4. For example, when the very tip of the file 4 contacts the tooth, the force point is small, which may lead to localized stress concentration; while when the side of the file 4 contacts the tooth, the force-bearing area increases, resulting in increased wear on the file 4. Furthermore, the motor's operation directly affects the force on the file 4: when the motor applies a larger rotational force to the file 4, the rotation speed of the file 4 increases, and the polishing efficiency improves. However, at the same time, the wear and fatigue of the file 4 during use also increase, thus increasing the risk of file 4 separation. Therefore, by collecting the motor's operating data and the wear of the file 4 during the same time period of the doctor's treatment, the doctor's operating habits and work preferences can be analyzed. Combined with the recovery status of the treated root canal in the medical data, the system can infer the advantages or disadvantages of the doctor's operating habits and work preferences, thereby providing targeted optimization suggestions.

[0071] Regarding the acquisition of motor operating data, in one specific implementation, the acquired data may include any one of the following data or a combination thereof: The central tendency parameter of torque in the corresponding first time period.

[0072] The central tendency parameter of rotational speed in the corresponding first time period.

[0073] The central tendency parameter of the voltage across the motor terminals during the corresponding first time period.

[0074] The central tendency parameter of the pressure in the corresponding first time period.

[0075] Motor torque is a crucial indicator of its output force; higher torque indicates stronger output force, reflecting the magnitude of the external force exerted by the file 4 on the target tooth. Furthermore, under certain load conditions, the motor's rotational speed is closely related to its output power. The motor's output power can be calculated, allowing us to obtain data on the external force exerted by the file 4 on the tooth after receiving motor power. By acquiring the voltage across the motor, the motor's output power can be inferred from its energy consumption. Moreover, since the file 4 is driven by the motor, the external force experienced by the file 4 during treatment of the target tooth is directly transmitted to the motor. Therefore, by detecting the pressure on the motor, we can directly obtain the external force experienced by the file 4 during use.

[0076] To more accurately assess the motor's operating status, in a preferred embodiment, the four data points—torque, speed, voltage, and pressure—in the motor's operating data can be weighted. For example, the weight ratio of torque, speed, voltage, and pressure in the motor's operating data can be set to 0.3:0.3:0.2:0.2. Since detecting the motor's torque and speed is the most convenient and accurate method, and they are inversely proportional, their images provide a more precise and direct feedback on the motor's operating status. Therefore, the weight ratio of the motor's torque and speed throughout the process is increased. In contrast, the voltage value across the motor requires conversion to represent the motor's operating status, and the pressure applied to the motor is only used to obtain the force applied by the doctor at that moment, providing less feedback on other doctor operations. Therefore, the proportion of the pressure applied to the motor and the voltage value applied across the motor is set to the same ratio. This multi-sensor data fusion method can distribute error values, avoiding the adverse impact on the accuracy of optimization suggestions due to excessively large errors in a single data point.

[0077] Regarding the acquisition of wear data for the file needle 4 component, in one specific implementation, the acquired data may include any one or a combination of the following: Rough data and its corresponding time point data.

[0078] Wear data and its corresponding time points.

[0079] Data on the number of corrosion marks and their corresponding time points.

[0080] The wear and damage of the file 4 throughout the treatment process directly reflects its lifespan and the dentist's operating habits. Coarseness data directly reflects the surface wear of the file 4 during use, while wear data and corrosion mark quantity data further reflect the damage to the file 4 throughout its use. By combining and comparing the damage to the file 4 with the corresponding motor data for the same time period during the entire treatment process, and controlling the ratio of motor data to the wear data of the file 4 component within a certain standard constant range, the optimal operating range for the dentist can be found. For example, this constant range can be set between 0.5 and 0.9. This optimization method not only ensures the polishing effect of the file 4 on the teeth but also avoids significant damage to the file 4 itself, reducing the risk of file 4 instrument separation.

[0081] In one specific implementation, the medical data acquired regarding the progress of root canal treatment may include: Data on the color and texture of dentin during root canal enlargement and the corresponding time points.

[0082] Irrigation is an essential step in root canal treatment. After irrigation, impurities produced by the abrasion of the file (4) will flow out. By observing the color of these impurities, one can understand the progress of the root canal treatment and thus obtain the optimal status of the treatment process within a given timeframe. Furthermore, as the root canal treatment progresses, the file (4) needs to be replaced. Different sizes of file (4) are used to adapt to different treatment stages. Generally, the file (4) in root canal treatment is gradually replaced from an initial fine file (0.15mm in diameter) to a coarser file (4) with a diameter of 0.3mm. When the file (4) can easily reach the apex of the root canal, it indicates that the treatment stage for that file (4) is complete. Therefore, by observing the replacement of file (4) sizes within a given timeframe, information about the effectiveness and progress of the root canal treatment can also be obtained.

[0083] In the step of generating operation optimization suggestions, various comparison logics can be employed. In a specific embodiment, the method may include any one or a combination of the following comparison results: The central tendency parameter value of the motor in the first time period is compared with the preset standard value of torque.

[0084] The central tendency parameter value of the motor in the first time period is compared with the preset standard value of the speed.

[0085] The central tendency parameter value of the motor in the first time period is compared with the preset standard value of the voltage.

[0086] The central tendency parameter value of the motor in the first time period is compared with the preset standard value of the pressure.

[0087] The roughness data, wear data, and corrosion mark quantity data of file 4 at the corresponding time points are compared with preset standard data. Based on the comparison results, the operating tendency is determined, and optimization suggestions are given based on the operating tendency.

[0088] For example, when the motor's torque or speed exceeds a preset standard value, it indicates that the motor's output power is too high, and the force transmitted between the file 4 and the tooth is also too high, which may cause stress concentration in some areas of the file 4. Based on the comparison results, the system can provide optimization suggestions for the doctor's operating habits, thereby avoiding overuse of the root canal motor and protecting the file 4 itself. Regarding the monitoring of file 4 data, if it is found that the file 4 is in an over-consumption state, the system can suggest changing the contact angle or direction between the file 4 and the tooth, thereby preventing excessive wear at a certain location of the file 4 and thus avoiding the formation of concentrated cracks in that location.

[0089] Furthermore, in a preferred embodiment, the acquired data can be input into an artificial intelligence (AI) model to obtain optimized output suggestions. This AI model can be trained based on multimodal data fusion and clinical data to generate optimal operational parameters. Through training on clinical operational data, the AI ​​model can generate various relationships between different operational techniques and treatment effects. The model incorporates strategies for employing different operational techniques and preferences for different patient conditions, thereby achieving optimal treatment outcomes. When the acquired data is input into the AI ​​model, the model can provide optimal improvement suggestions based on the doctor's operational preferences, the state of the acupuncture needle, and the patient's recovery status.

[0090] To more scientifically determine the preset standard value, this embodiment also provides a method based on the slope analysis of a function graph. Specifically, refer to... Figure 8 As shown, the process of generating operation optimization suggestions may include the following steps: S11. Generate a rectangular coordinate system graph of motor operation, using the time node values ​​as the horizontal axis and the working data as the vertical axis, and connect different time nodes with the corresponding working data points to generate a graph of motor working function.

[0091] S12. Generate a wear rectangular coordinate system graph, using the time node values ​​as the horizontal axis and the wear data as the vertical axis. Connect different time nodes with the corresponding wear data points to generate a wear function graph.

[0092] S13. Obtain the time node intervals corresponding to the absolute values ​​of the slopes in the motor working function image and the wear function image that are less than the first preset value, and take the intersection of the obtained time node intervals to generate the intersection interval.

[0093] S14. Obtain the working data of the motor and the wear data of the file 4 corresponding to the intersection interval, and calibrate them as the corresponding preset standard values.

[0094] The first preset value can be tan30°. Analysis shows that when the absolute value of the slope of the motor operating function graph and the wear function graph is less than the time interval corresponding to tan30°, it indicates that the motor operates relatively smoothly within this time interval, and the impact on the wear of the file 4 is also relatively small. When the intersection of the acquired time intervals can be obtained, the motor operating condition and the wear of the file 4 will reach an optimal balance within the intersection interval. This method can effectively reduce the wear of the file 4 during treatment and extend its service life.

[0095] refer to Figure 9 To further enhance the therapeutic effect, the generation method may also include the following steps: S21. Generate a medical rectangular coordinate system graph, using the values ​​of time nodes as the horizontal axis and medical data as the vertical axis. Connect different time nodes with the corresponding medical data points to generate a medical function graph.

[0096] S22. Obtain the time intervals in the medical function graph where the absolute value of the slope of the function graph is greater than the second preset value, and mark them as the optimal recovery intervals.

[0097] S23. Take the second intersection of the optimal recovery interval and the intersection interval, and generate the optimal preset standard value for the motor working data, wear data and medical data corresponding to the time nodes within the second intersection.

[0098] Similarly, the function graph of the recovery status needs to be set within the same time node to obtain the motor data, file 4 wear data, and corresponding medical data, thereby establishing the relationship between motor and file 4 wear and the recovery status. The second preset value can be tan60°. In the medical function graph, when the absolute value of the slope of the function graph is greater than the time node interval corresponding to tan60°, it indicates that the slope is large enough, which means that the tooth recovery status is good. Therefore, by taking the intersection of the previously obtained intersection interval representing the stable operation interval of low wear and low load and the optimal recovery interval representing the high treatment efficiency interval, the optimal operation tendency can be obtained. Within this time period, the doctor's operation can not only reduce material waste but also achieve better recovery status. This design can achieve the best treatment effect while taking into account the control of file 4 wear status, and generate the best operation standard based on the corresponding operation tendency for doctors to refer to and improve during treatment.

[0099] It should be noted that the "tan30°" and "tan60°" mentioned in the above embodiments are only based on specific clinical trial datasets. For example, an exemplary threshold range is obtained by selecting 50 standardized root canal preparation cases and statistically analyzing the slope distribution interval between the motor load plateau period and the optimal root canal wall removal efficiency period. In practical applications, this slope threshold is not fixed, but can be dynamically calibrated through machine learning models based on the material fatigue characteristic curves of different brands of files, different root canal anatomy (such as curvature, degree of calcification), and individual patient differences, or a personalized threshold range (e.g., 25°-35° or 55°-65°) set by the doctor before surgery according to clinical guidelines. The core of this application lies in the methodology of using the slope of a function graph to represent the rate of change, rather than being limited to specific angle values.

[0100] This embodiment also discloses an optimization system for endodontic treatment operations, which can be used to perform the above-described methods. In one specific embodiment, the system may include: a root canal instrument, a file detection module, a root canal scanning module, and a processing module.

[0101] The root canal instrument has a rotating head for connecting to and rotating a file 4. A rotary motor is installed inside the rotating head, and the rotary motor is communicatively connected to a data storage device. The data storage device collects torque data from the rotary motor. Located inside the rotating head of the root canal instrument, the data storage device can extract and store the motor's torque data. A timer can also be set within the data storage device to record different data points from the motor within a specific time period.

[0102] The file detection module is used to scan the file 4 to generate wear data and generate wear data based on the wear condition of the file 4. Specifically, the file detection module can detect the wear or damage of the file 4. For example, by scanning the surface of the file 4 at various time points within a fixed time period, the state of the surface of the file 4 at each time point can be obtained.

[0103] In a specific example of an offline training data acquisition method used to build a model, after removing the file 4, a scanning electron microscope can be used to scan the surface of the file 4 to capture its surface roughness and crack density. This captured data is then integrated with the motor's torque data to establish a link between the motor data and the file 4 data.

[0104] The root canal scanning module scans the root canal formation and recovery status and generates recovery data based on this status. It acquires the recovery status of the root canals at various time points. The processing module communicates with the data storage, file detection module, and root canal scanning module. This module compares the acquired data with internal preset values ​​and generates suggestions for doctor's intervention based on the comparison results. By combining the root canal recovery status with the doctor's operational preferences through processing and analysis, the processing module can provide reasonable suggestions for further treatment.

[0105] Furthermore, the root canal apparatus may also include any one or more combinations of a speed recorder, a pressure sensor 62, a voltage sensor, and a display. The speed recorder may be disposed within the rotating head and connected to the output of the rotary motor, and communicatively connected to a data storage device. The speed recorder is used to acquire the rotational speed of the rotary motor and transmit the acquired speed data to the data storage device. The pressure sensor 62 may be disposed within the rotating head and abut against the end of the rotary motor away from the file 4; the pressure sensor 62 is also communicatively connected to the data storage device. The rotary motor receives external force from the file 4, which is transmitted to the pressure sensor 62, allowing the pressure sensor 62 to record the force acting on the rotary motor. The voltage sensor may be disposed within the rotating head and electrically connected to the rotary motor; the voltage sensor is also communicatively connected to the data storage device. The voltage sensor is used to detect the voltage data across the terminals of the rotary motor during operation and transmit the detected voltage data to the data storage device. The display is communicatively connected to the voltage sensor and is used to display the voltage values ​​across the terminals of the rotary motor during operation, as detected by the voltage sensor.

[0106] The speed recorder, pressure sensor 62, and voltage sensor can accurately collect data on the motor's speed, voltage requirements during operation, and the pressure exerted by the file 4, respectively. Based on this sensor data from the motor, and the wear status of the file 4 at corresponding time points, the processing module can summarize and analyze the data, and provide doctors with optimization suggestions for work preferences based on the analysis results.

[0107] This embodiment also discloses a computer storage product. The computer storage product is equipped with a computer program that, when executed, can implement the steps of the aforementioned method for generating suggestions to optimize the root canal treatment physician's preparation process. When the computer program within the computer storage product can generate optimized suggestions, it can operate the product in different environments according to the user's needs and provide timely suggestions on operational preferences to the user. This intelligent design not only significantly improves the physician's treatment results but also effectively reduces the probability of wear and damage to the file 4 during use.

[0108] In summary, the system and method provided in this embodiment, through the fusion analysis of multi-dimensional data, and particularly by introducing a dynamic safety assessment mechanism based on the slope of a function graph and a quadratic intersection algorithm, achieve a leap from single instrument monitoring to end-to-end optimization. This not only provides valuable reference for doctors to improve their operating habits but also further enhances the standardization and efficiency of diagnosis and treatment, significantly reducing the risk of instrument separation during root canal treatment.

[0109] Finally, it should be noted that those skilled in the art will understand that many technical details have been presented in the embodiments of this application to facilitate a better understanding of the present application. However, even without these technical details and various changes and modifications based on the above embodiments, the technical solutions claimed in the claims of this application can be substantially achieved. Therefore, in practical applications, various changes can be made to the above embodiments in form and detail without departing from the spirit and scope of this application.

Claims

1. A root canal treatment handpiece, characterized in that, include: The main body of the mobile phone; A main shaft, located on the main body of the handpiece, is used to connect the root canal treatment file to drive the file to rotate; A gripper, the gripper comprising: The clamping part has a cylindrical sidewall corresponding to the main shaft, and the sidewall is used to accommodate the file needle; A sensing component is used to monitor the state changes of the sidewall caused by the force exerted by the file needle, so as to obtain wear data of the file needle.

2. The root canal treatment handpiece according to claim 1, characterized in that, The sidewall has an elastic deformation zone, which undergoes elastic deformation when subjected to the force of the file needle; The sensing component is used to monitor the state changes of the elastic deformation region.

3. The root canal treatment handpiece according to claim 2, characterized in that, The sensing component includes a plurality of resistance strain gauges spaced circumferentially along the elastic deformation region; The number of resistance strain gauges is a multiple of four, and the resistance strain gauges form a full-bridge circuit.

4. The root canal treatment handpiece according to claim 3, characterized in that, The clamping part has a hollow cavity, and the resistance strain gauge is disposed in the cavity and closely attached to the elastic deformation zone.

5. The root canal treatment handpiece according to claim 2, characterized in that, The clamping part has a hollow cavity filled with a fluid medium, and the sensing component includes a pressure sensor disposed within the fluid medium.

6. The root canal treatment handpiece according to claim 5, characterized in that, The elastic deformation zone is a flexible film, and a gap is reserved between the flexible film and the surface of the file needle, and the gap is filled with a biocompatible lubricant.

7. The root canal treatment handpiece according to claim 2, characterized in that, The elastic deformation region includes: A rigid sleeve forms the surface of the sidewall; An elastic ring is disposed at both ends of the rigid sleeve and connects the rigid sleeve to the rest of the clamping part, so that when the rigid sleeve is subjected to impact, the vibration can be transmitted to the sensing component through the elastic ring.

8. A method for acquiring wear data of root canal treatment files, characterized in that, include: The wear data of the file needle is obtained by monitoring the state changes of the cylindrical sidewall of the holder caused by the force of the file needle through the sensing component. The sidewall is positioned on the main shaft of the root canal treatment handpiece to accommodate the file, and the sidewall is located on the clamping part of the holder.

9. The method for acquiring root canal treatment file wear data according to claim 8, characterized in that, The monitoring steps include: Monitor the voltage change signal output by the resistance strain gauge attached to the sidewall surface; Alternatively, the pressure change signal of the fluid medium filling the hollow cavity of the clamping part can be monitored, the pressure change signal being generated by the compression of the sidewall.

10. A method for generating suggestions to optimize the preparation process for root canal treatment, characterized in that, The method includes: The working data of the motor of the root canal treatment handpiece is obtained during a first time period, which contains N time nodes, where N is a natural number greater than or equal to 1. The wear data of the file assembly at each of the aforementioned time points is obtained respectively; The wear data is obtained by monitoring the state changes of the cylindrical sidewall of the holder caused by the force of the file needle through the sensing component. The sidewall is set in accordance with the main shaft of the root canal treatment handpiece to accommodate the file needle, and the sidewall is located on the clamping part of the holder. Medical data on the treatment progress of the root canal at each of the aforementioned time points were obtained. Based on the combined operational data, wear data, and medical data, operational optimization suggestions are generated.

11. The method for generating suggestions for optimizing the endodontic treatment physician preparation process according to claim 10, characterized in that, The wear data is obtained by converting the elastic deformation signal detected by the resistance strain gauge through a fatigue accumulation model. The resistance strain gauge is attached to the cylindrical sidewall of the clamp.

12. The method for generating suggestions for optimizing the endodontic treatment physician preparation process according to claim 10, characterized in that, The wear data is obtained by converting the pressure signal measured by the pressure sensor located in the fluid medium through a fatigue accumulation model. The clamping part has a hollow cavity, and the fluid medium is filled in the hollow cavity.

13. The method for generating suggestions for optimizing the endodontic treatment physician preparation process according to claim 10, characterized in that, The generation of the operation optimization suggestions includes: Generate a rectangular coordinate system diagram of the motor's operation; Based on the motor working rectangular coordinate system diagram, generate a motor working function image; Generate a wear rectangular coordinate system diagram; Based on the wear rectangular coordinate system diagram, generate a wear function image; The intervals formed by the time nodes corresponding to the absolute values ​​of the slopes in the motor working function image and the wear function image that are less than the first preset angle are obtained respectively, and the intersection of the intervals formed by the time nodes is taken to generate an intersection interval. The working data of the motor and the wear data of the file corresponding to the intersection interval are obtained respectively, and respectively calibrated as the corresponding preset standard values; Generate a medical rectangular coordinate system diagram; Generate a medical function graph based on the aforementioned medical rectangular coordinate system graph; In the medical function image, the intervals where the absolute value of the slope of the function image is greater than the second preset angle, corresponding to the time nodes, are obtained and marked as the optimal recovery intervals; The optimal recovery interval and the intersection interval are intersected twice, and the optimal preset standard value is generated for the motor working data, wear data and medical data corresponding to the time nodes within the second intersection.

14. The method for generating suggestions for optimizing the root canal treatment physician preparation process according to claim 10, characterized in that, The step of generating operational optimization suggestions by integrating the operational data, wear data, and medical data includes any one or a combination of the following comparison results: The central tendency parameter value of the motor during the first time period is compared with the preset standard value of torque; The central tendency parameter value of the motor during the first time period is compared with the preset standard value of the rotational speed; The central tendency parameter value of the motor during the first time period is compared with the preset standard value of the voltage; The central tendency parameter value of the motor during the first time period is compared with the preset standard value of the pressure; Compare the roughness data, wear data, and corrosion mark quantity data of the file at the corresponding time point with preset standard data; Based on the comparison results, operational tendencies are derived, and optimization suggestions are given based on these operational tendencies.

15. A computer program product, characterized in that, The computer program product has a computer program that, when executed, can implement the method described in any one of claims 8 to 14.

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