High pressure syringe for injection of hard areas of scarring

Abstract

The application discloses a high-pressure injector for scar hard area injection and belongs to the technical field of medical devices.The application solves the problems that the prior art is difficult to meet the drug delivery requirements of the scar hard area due to unstable propulsion, lacks objective quantitative basis, and is easy to cause uneven drug distribution and poor treatment effect, generates targeted injection parameters suitable for different scar levels by accurately deconstructing the multi-level hardness and thickness of the scar, improves the adaptability of injection data and individual scar characteristics by combining dynamic comparison and benchmark optimization during the injection process, simultaneously predicts the postoperative scar softening progress and drug absorption effect in advance, synchronously builds a multi-grade early warning mechanism, and accurately transmits injection pressure related risks through the differential light signals of warning lights, so that the accuracy and individualization level of scar injection treatment are effectively improved, and the safety and controllability of the injection process are enhanced.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a high-pressure injector for injection into hardened scar areas. Background Technology

[0002] Scars are abnormal tissues that form during the healing process after skin tissue is damaged. Hard scars, in particular, are characterized by excessive proliferation and disordered arrangement of collagen fibers, resulting in high tissue hardness and density, making it difficult for conventional injection devices to achieve effective penetration and uniform distribution of drugs.

[0003] Most existing syringes are designed for conventional pressure, resulting in poor propulsion stability and an inability to provide the high-pressure delivery power required for hard scar areas. This can easily lead to problems such as insufficient drug injection, local accumulation, or uneven diffusion. In addition, current scar injection treatments rely heavily on the physician's clinical experience to assess scar characteristics and set injection parameters. They lack objective data support, making it difficult to achieve accurate quantitative assessment of scar hardness and thickness. This can easily lead to poor treatment results or complications due to parameter setting deviations.

[0004] Therefore, to meet current needs, a high-pressure injector for injection into hard scar areas is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a high-pressure injector for injection into hard scar areas. By precisely deconstructing the scar in terms of multi-layer hardness and thickness, targeted injection parameters adapted to different scar layers are generated. Combined with dynamic comparison benchmark optimization during the injection process, the compatibility of injection data with individual scar characteristics is improved. At the same time, the progress of postoperative scar softening and drug absorption effect are predicted in advance, and a multi-level early warning mechanism is established simultaneously. The differential light signals of the warning lights accurately transmit the risks related to injection pressure, thereby effectively improving the accuracy and personalization of scar injection treatment, enhancing the safety and controllability of the injection process, and solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A high-pressure injector for injection into hard scar areas includes: an auxiliary cylinder, a reinforcing needle seat locking mechanism, a high-pressure sealing piston, a spiral mechanical propulsion module, and an injection needle for containing therapeutic drugs. The high-pressure injector integrates a data acquisition unit, an AI analysis unit, and an early warning feedback unit. The data acquisition unit, AI analysis unit, and early warning feedback unit are connected to an external display terminal via wireless communication technology to display injection pressure, injection speed, injection volume, scar assessment results, and early warning information in real time. The data acquisition unit includes a miniature pressure sensor and a displacement encoder. The miniature pressure sensor is embedded in the high-pressure sealed piston and is used to collect pressure data in real time during the injection process. The displacement encoder is set on the helical mechanical propulsion module and is used to collect displacement data of the precision threaded push rod in real time to obtain drug injection volume and injection speed data. The AI ​​analysis unit is configured to acquire preoperative scar image data based on ultrasound measurement, call the database for comparative analysis, intelligently assess the hardness and thickness of the scar, and recommend the initial injection pressure range, injection speed and estimated dose; it also receives data from the micro pressure sensor and displacement encoder in real time, generates real-time injection data atlases, and compares and analyzes them with the general comparison thresholds in the database. The early warning feedback unit is configured to provide visual feedback through a warning light located on the surface of the auxiliary cylinder when the real-time injection pressure is detected to exceed the recommended safety threshold or to increase abnormally, based on the analysis results, so as to remind the physician to adjust the injection parameters in a timely manner.

[0007] Furthermore, the AI ​​analysis unit includes: The preoperative stratification assessment module is configured to perform stratification comparison analysis based on the input scar image data and call a multi-center scar feature database; combined with the scar stratification hardness threshold model, it deconstructs and outputs the hardness gradient and thickness parameters of different layers of scar; and generates recommended parameters for stratified targeted injection based on these parameters, including the initial injection pressure range, injection speed and estimated dose for each layer. The intraoperative real-time calibration module is configured to use a dynamic deviation correction algorithm to scale or adjust the extracted general comparison threshold in real time based on the data collected at the initial stage of injection, and dynamically calibrate the comparison benchmark in combination with the real-time scar characteristics of the current injection site.

[0008] Furthermore, the AI ​​analysis unit also includes: The efficacy prediction module is configured to predict the postoperative scar softening progress and drug absorption effect based on real-time injection data and preoperative scar characteristics through a pre-trained time-series prediction model. Its input features include at least preoperative scar layering parameters, real-time injection curve feature values ​​and cumulative injection dose. Its output is the predicted scar softening index and the expected onset time. The individual profile construction module is configured to record and analyze injection data of the same patient at different treatment stages, construct an individual treatment feature profile, and reflect the changing pattern of the scar's response to treatment. Based on the individual treatment feature profile and the efficacy prediction results, the recommended injection parameters for the next treatment cycle are adaptively optimized.

[0009] Furthermore, the early warning feedback unit includes: The hierarchical construction module is configured to build a hierarchical early warning mechanism based on the analysis results of the AI ​​analysis unit. The warning light emits light signals of different colors and flashing patterns according to different risk levels. The risk levels include at least: Level 1 warning, corresponding to the injection pressure approaching the safety threshold; Level 2 warning, corresponding to the injection pressure showing an abnormally sharp increase or the pressure deviation exceeding the preset dynamic threshold.

[0010] Furthermore, the AI ​​analysis unit also includes: The sample pre-storage module is configured to pre-store a multi-center scar feature database, which includes scar tissue feature data of different hardness, thickness, and type, as well as corresponding effective treatment parameters. The data recording module is configured to record and store complete data for each treatment, track subsequent efficacy evaluation information, and form treatment case files for optimizing subsequent treatments or updating the database.

[0011] Furthermore, the reinforced needle seat locking mechanism is located at the front end of the auxiliary cylinder to fix the injection needle at the front end of the auxiliary cylinder. The spiral mechanical propulsion module is located at the rear end of the auxiliary cylinder and is in contact with the high-pressure sealing piston to provide a smooth and controllable propulsion power for the high-pressure sealing piston. The high-pressure sealing piston is tightly fitted with the inner wall of the injection needle to achieve sealing inside the injection needle.

[0012] Furthermore, the helical mechanical propulsion module includes a rotating handle, a threaded push rod, a thrust bearing, and a limiting structure. The rotating handle is connected to the thrust bearing through the threaded push rod, and limiting structures are symmetrically arranged on both sides of the thrust bearing.

[0013] Furthermore, the limiting structure includes a limiting strip and gears. The limiting strip consists of a short rack and a long rack. The short rack is fixed on both sides of the thrust bearing, and the long rack is fixed on the inner walls of both sides of the auxiliary cylinder. The positions of the short rack and the long rack are corresponding. There are two gears, which mesh between the short rack and the long rack on both sides of the thrust bearing.

[0014] Compared with the prior art, the beneficial effects of the present invention are: This invention generates targeted injection parameters adapted to different scar layers by precisely deconstructing the hardness and thickness of scars at multiple levels. Combined with dynamic comparison benchmark optimization during the injection process, it improves the compatibility of injection data with individual scar characteristics. Simultaneously, it predicts postoperative scar softening progress, drug absorption effects, and onset time, accumulating injection data across multiple treatment stages and forming a unique treatment characteristic record. Furthermore, it establishes a multi-level early warning mechanism, using differentiated warning light signals to accurately transmit injection pressure-related risks. This effectively improves the accuracy and personalization of scar injection treatment, enhances the safety and controllability of the injection process, reduces reliance on physician clinical experience, and improves overall treatment efficacy and efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the high-pressure injector for injection into hard scar areas according to the present invention. Figure 2 This is a schematic diagram showing the disassembled high-pressure injector for injection into hard scar areas according to the present invention. Figure 3 This is a front view of the high-pressure injector for injection into hard scar areas according to the present invention. Figure 4 For the present invention Figure 3 Enlarged detail diagram of section A in the middle; Figure 5 This is a flowchart of the modules of the present invention.

[0016] In the diagram: 1. Auxiliary cylinder; 2. Reinforced needle seat locking mechanism; 21. Main sleeve; 22. Auxiliary sleeve; 3. High-pressure sealing piston; 4. Spiral mechanical propulsion module; 41. Rotary handle; 42. Threaded push rod; 43. Thrust bearing; 44. Limiting structure; 441. Limiting strip; 442. Gear; 5. Injection needle; 6. Warning light. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] To address the issues that existing syringes, mostly designed for conventional pressure, suffer from poor propulsion stability and cannot provide the high-pressure delivery required for hard scar areas, leading to problems such as insufficient drug injection, local accumulation, or uneven diffusion; furthermore, current scar injection treatments rely heavily on physicians' clinical experience to assess scar characteristics and set injection parameters, lacking objective data support and making it difficult to accurately quantify scar hardness and thickness. This can easily result in poor treatment outcomes or complications due to parameter setting errors. Please refer to [link to relevant documentation]. Figures 1-5 This embodiment provides the following technical solution: A high-pressure injector for injection into hard scar areas includes: an auxiliary cylinder 1, a reinforcing needle seat locking mechanism 2, a high-pressure sealing piston 3, a helical mechanical propulsion module 4, and an injection needle 5 for containing therapeutic drugs. The reinforcing needle seat locking mechanism 2 is located at the front end of the auxiliary cylinder 1 and consists of a main sleeve 21 and an auxiliary sleeve 22. The main sleeve 21 is fitted onto the auxiliary cylinder 1 via a threaded knob on its outer wall, and the auxiliary sleeve 22 is fitted onto the main sleeve 21 via a limiting tube knob on one side. This mechanism is used to fix the injection needle 5 at the front end of the auxiliary cylinder 1, preventing the injection needle 5 from loosening or falling off during high-pressure injection; the helical mechanical... The propulsion module 4 is located at the tail of the auxiliary cylinder 1 and is in contact with the high-pressure sealing piston 3. It is used to provide stable and controllable propulsion power for the high-pressure sealing piston 3. The high-pressure sealing piston 3 is tightly fitted with the inner wall of the injection needle 5 to achieve the internal sealing of the injection needle 5, preventing drug leakage during high-pressure injection. At the same time, it is used to push the drug forward along the injection needle 5. The high-pressure sealing piston 3 is made of medical elastic sealing material. It has an annular sealing groove on its outer peripheral wall. A sealing gasket is embedded in the annular sealing groove to further improve the sealing performance between the high-pressure sealing piston 3 and the inner wall of the injection needle 5, adapting to the sealing requirements in high-pressure injection scenarios and preventing drug leakage. In practice, the auxiliary cylinder 1 and the reinforcing needle seat locking mechanism 2 are disassembled by turning the knob. The injection needle 5 is placed into the auxiliary cylinder 1, and the advancing end of the injection needle 5 is brought into contact with the high-pressure sealing piston 3 inside the auxiliary cylinder 1. The main sleeve 21 is fitted onto the needle tube of the injection needle 5 and locked in the auxiliary cylinder 1 by turning the knob. Then, the auxiliary sleeve 22 is fitted onto the needle tip of the injection needle 5 and locked on the main sleeve 21 by turning the knob, thereby locking and fixing the needle tip of the injection needle 5 to prevent the needle tip from falling off when injecting drugs into harder scars.

[0019] The spiral mechanical propulsion module 4 includes a rotating handle 41, a threaded push rod 42, a thrust bearing 43, and a limiting structure 44. The rotating handle 41 has anti-slip textures on its surface, making it easy for doctors to grip and apply rotational force, thus improving ease of operation. The rotating handle 41 is connected to the thrust bearing 43 via the threaded push rod 42. The threaded push rod 42 is made of high-strength medical-grade stainless steel and has precision threads on its surface to ensure propulsion accuracy and prevent axial deviation, ensuring precise control of injection volume and speed. Limiting structures 44 are symmetrically arranged on both sides of the thrust bearing 43. 4 includes a limiting bar 441 and a gear 442. The limiting bar 441 consists of a short rack and a long rack. The short rack is fixed on both sides of the thrust bearing 43, and the long rack is fixed on the inner walls of both sides of the auxiliary cylinder 1. The short rack and the long rack are positioned correspondingly. There are two gears 442, which mesh between the short rack and the long rack on both sides of the thrust bearing 43. By manually rotating the handle 41, the threaded push rod 42 is driven to move forward smoothly and at a constant speed along the axial direction, thereby converting the rotational torque into a continuous linear thrust, pushing the piston to generate high pressure, and realizing the stable delivery of drugs.

[0020] The beneficial effects achieved by the above are as follows: By setting up the spiral mechanical propulsion module 4, the screw push rod 42 is driven by the rotating handle 41, and the high-pressure sealing piston 3 and the inner wall of the injection needle 5 are tightly sealed, which effectively breaks through the dense structure of the hard scar tissue, promotes uniform drug penetration, solves the problem of insufficient drug delivery and uneven distribution of conventional syringes, and improves the scar treatment effect; and by setting up the limiting structure 44, when the screw push rod 42 pushes the high-pressure sealing piston 3 to move, it pushes the gear 442 meshing with it to move along the long rack on both sides of the inner wall of the auxiliary cylinder 1 through the short racks on both sides, so as to ensure that the screw push rod 42 and the high-pressure sealing piston 3 can move forward axially smoothly, and realize high-pressure and uniform drug delivery.

[0021] The high-pressure injector integrates a data acquisition unit, an AI analysis unit, and an early warning feedback unit. These units connect to an external display terminal via wireless communication technology to display injection pressure, injection speed, injection volume, scar assessment results, and early warning information in real time, allowing physicians to intuitively grasp key data during the treatment process.

[0022] The data acquisition unit includes a miniature pressure sensor and a displacement encoder. The miniature pressure sensor is embedded in the high-pressure sealed piston 3 to collect pressure data in real time during the injection process. The miniature pressure sensor uses a medical-grade piezoresistive or fiber optic sensing element and is passively embedded in the bearing end face of the high-pressure sealed piston 3, placing it directly on the injection pressure transmission path. This allows for real-time, lag-free sensing of the dynamic pressure changes of the liquid at the piston tip. The displacement encoder is mounted on the helical mechanical propulsion module 4 to collect displacement data of the threaded push rod 42 in real time, obtaining data on the drug injection volume and injection speed. The displacement encoder is a high-precision incremental rotary encoder, with its core sensing component rigidly coupled to the drive shaft of the threaded push rod 42 of the helical mechanical propulsion module 4. When the rotating handle 41 drives the threaded push rod 42 to rotate, the displacement encoder synchronously and accurately measures its angular displacement and calculates the linear displacement of the push rod in real time using the known pitch parameters. This displacement data directly corresponds to the travel distance of the high-pressure sealed piston 3 within the injection needle 5, thereby accurately calculating the output drug injection volume and instantaneous injection speed.

[0023] The AI ​​analysis unit is configured to acquire preoperative scar image data based on ultrasound measurement, perform comparative analysis using a database, intelligently assess scar hardness and thickness, and recommend initial injection pressure range, injection speed, and estimated dose. It also receives data from a miniature pressure sensor and displacement encoder in real time, generates real-time injection data atlases such as pressure-displacement curves and pressure-time curves, and compares these with common comparison thresholds in the database. The AI ​​analysis unit includes: The preoperative stratification assessment module is configured to use input scar imaging data, including but not limited to high-frequency ultrasound images, optical coherence tomography (OCT) data, and elastography maps, to perform stratification comparison and analysis using a multi-center scar feature database. Combined with a scar stratification hardness threshold model, it performs a three-dimensional deconstruction of scar tissue from the epidermis to the deep fascia layer, and outputs the hardness gradient and thickness parameters of different scar layers such as the stratum corneum, superficial dermis, deep dermis, and subcutaneous tissue. Based on this deconstruction result, it generates recommended parameters for stratified targeted injection, including the initial injection pressure range, injection rate, suggested puncture depth for each layer, stratified injection rate curve, and the theoretical optimal dose calculated based on tissue volume and pharmacokinetics, ensuring optimal drug distribution within the target layer.

[0024] The intraoperative real-time calibration module is configured to use a dynamic deviation correction algorithm to scale or adjust the extracted general comparison threshold in real time based on data collected during the initial injection phase, such as the pressure-displacement curve features collected during the first 5% of the injection stroke. Combined with the real-time scar features of the current injection site, the module dynamically calibrates the comparison benchmark. It can identify signal shifts caused by individual tissue microstructure differences, local needle tip position deviations, or real-time tissue deformation, and then scale (e.g., adjust amplitude), adjust (e.g., correct slope and curvature), or compensate the phase of the general pressure threshold curve in real time to generate a personalized dynamic calibration benchmark that highly matches the biomechanical characteristics of the current actual injection site, ensuring a high degree of accuracy in subsequent early warning and analysis.

[0025] The efficacy prediction module is configured to use a pre-trained time-series prediction model based on real-time injection data and preoperative scar characteristics. Its input features include at least preoperative scar layering parameters, intraoperative real-time injection curve feature values, and cumulative injection dose. Combined with patient basic information such as scar course and pathological type, it performs multi-task learning to predict the postoperative scar softening progress and drug absorption effect. Its output includes not only quantitative indicators predicting the degree of scar softening at different postoperative time points such as 1 week, 1 month, and 3 months, such as the percentage decrease in elastic modulus and the thickness reduction rate, but also predictions of the expected absorption rate of the drug in the target tissue, the onset time window, and the duration of efficacy, providing physicians with data-driven basis for treatment expectation management and subsequent intervention timing.

[0026] The individual profile construction module is configured to record and analyze injection data of the same patient at different treatment stages, including preoperative assessment parameters, actual injection parameter curves, real-time calibration records, early warning events, and postoperative efficacy follow-up data arranged in time series, such as regularly measured scar hardness, thickness, color, and patient subjective scores. Through longitudinal correlation analysis and trend mining of the multidimensional data stream, an individual treatment characteristic profile reflecting the patient's scar tissue's dynamic response to treatment, including specific drugs and injection pressure patterns, is constructed to reflect the changing patterns of the scar's response to treatment. Based on the individual treatment characteristic profile and the efficacy prediction results, the recommended injection parameters for the next treatment cycle are adaptively optimized.

[0027] The sample pre-storage module is configured to pre-store a multi-center scar feature database, which includes scar tissue feature data of different hardness, thickness, and type, as well as corresponding effective treatment parameters.

[0028] The data recording module is configured to record and store complete data for each treatment, track subsequent efficacy evaluation information, such as changes in scar softening degree and height, and form treatment case files for optimizing subsequent treatments or updating the database.

[0029] The early warning feedback unit is configured to, based on analysis results, provide visual feedback to the physician via a warning light 6 located on the surface of the auxiliary cylinder 1 when the real-time injection pressure exceeds the recommended safety threshold or experiences an abnormally sharp increase, such as indicating potential encounter with dense nodules or accidental entry into non-target tissue. This alerts the physician to adjust the injection parameters promptly. The early warning feedback unit includes: The hierarchical construction module is configured to build a hierarchical early warning mechanism based on the analysis results of the AI ​​analysis unit. The warning light 6 emits light signals of different colors and flashing patterns according to different risk levels. The risk levels include at least: Level 1 warning, corresponding to the injection pressure approaching the safety threshold; Level 2 warning, corresponding to an abnormally sharp increase in injection pressure or a pressure deviation exceeding a preset dynamic threshold. For example, the light signal triggered by Level 1 warning is a flashing green signal, and parameter fine-tuning suggestions are pushed through an external display terminal; the light signal triggered by Level 2 warning is a solid red signal, and parameter adjustment suggestions are pushed through an external display terminal.

[0030] The beneficial effects achieved by the above are as follows: By precisely deconstructing the scar's multi-layered hardness and thickness, targeted injection parameters adapted to different scar layers are generated; combined with dynamic comparison benchmark optimization during the injection process, the compatibility between injection data and individual scar characteristics is improved; at the same time, the postoperative scar softening progress, drug absorption effect, and onset time are predicted in advance, accumulating injection data for multiple treatment stages for each individual and forming a unique treatment characteristic record; and a multi-level early warning mechanism is simultaneously established, using differentiated light signals from warning lights to accurately transmit injection pressure-related risks, thereby effectively improving the accuracy and personalization of scar injection treatment, enhancing the safety and controllability of the injection process, reducing reliance on physician clinical experience, and improving overall treatment effect and efficiency.

[0031] Working principle: The spiral mechanical propulsion module 4 provides stable and controllable high-pressure power to ensure effective injection of drugs into hard scar tissue. During the injection process, pressure and displacement data are monitored in real time, and stratified assessment and parameter recommendations are performed based on preoperative scar imaging data. During the operation, the injection benchmark is optimized in real time through dynamic calibration algorithm. Combined with individual feature profile and efficacy prediction module, the treatment plan is continuously adaptively optimized. Graded early warning is given based on real-time analysis results to promptly indicate operational risks. All data are synchronized to an external display terminal through wireless communication technology to form an intelligent treatment closed loop, thereby achieving controllable, precise and personalized management of the entire scar injection treatment process.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or high-voltage switchgear that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or high-voltage switchgear.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-pressure injector for injection into hard scar areas, comprising: A high-pressure injector consisting of an auxiliary cylinder (1), a reinforced needle seat locking mechanism (2), a high-pressure sealing piston (3), a spiral mechanical propulsion module (4), and an injection needle (5) for containing therapeutic drugs, is characterized in that: the high-pressure injector integrates a data acquisition unit, an AI analysis unit, and an early warning feedback unit, which are connected to an external display terminal via wireless communication technology to display injection pressure, injection speed, injection volume, scar assessment results, and early warning information in real time; The data acquisition unit includes a miniature pressure sensor and a displacement encoder. The miniature pressure sensor is embedded in the high-pressure sealed piston (3) and is used to collect pressure data in real time during the injection process. The displacement encoder is set on the helical mechanical propulsion module (4) and is used to collect displacement data of the injection needle (5) in real time to obtain drug injection volume and injection speed data. The AI ​​analysis unit is configured to acquire preoperative scar image data based on ultrasound measurement, call the database for comparative analysis, intelligently assess the hardness and thickness of the scar, and recommend the initial injection pressure range, injection speed and estimated dose; it also receives data from the micro pressure sensor and displacement encoder in real time, generates real-time injection data atlases, and compares and analyzes them with the general comparison thresholds in the database. The early warning feedback unit is configured to provide visual feedback through the warning light (6) located on the surface of the auxiliary cylinder (1) when the real-time injection pressure is detected to exceed the recommended safety threshold or an abnormal surge occurs, based on the analysis results, so as to remind the physician to adjust the injection parameters in time.

2. The high-pressure injector for injection into hard scar areas according to claim 1, characterized in that, The AI ​​analysis unit includes: The preoperative stratification assessment module is configured to perform stratification comparison analysis based on the input scar image data and call a multi-center scar feature database; combined with the scar stratification hardness threshold model, it deconstructs and outputs the hardness gradient and thickness parameters of different layers of scar; and generates recommended parameters for stratified targeted injection based on these parameters, including the initial injection pressure range, injection speed and estimated dose for each layer. The intraoperative real-time calibration module is configured to use a dynamic deviation correction algorithm to scale or adjust the extracted general comparison threshold in real time based on the data collected at the initial stage of injection, and dynamically calibrate the comparison benchmark in combination with the real-time scar characteristics of the current injection site.

3. The high-pressure injector for injection into hard scar areas according to claim 2, characterized in that, The AI ​​analysis unit also includes: The efficacy prediction module is configured to predict the postoperative scar softening progress and drug absorption effect based on real-time injection data and preoperative scar characteristics through a pre-trained time-series prediction model. Its input features include at least preoperative scar layering parameters, real-time injection curve feature values ​​and cumulative injection dose. Its output is the predicted scar softening index and the expected onset time. The individual profile construction module is configured to record and analyze injection data of the same patient at different treatment stages, construct an individual treatment feature profile, and reflect the changing pattern of the scar's response to treatment. Based on the individual treatment feature profile and the efficacy prediction results, the recommended injection parameters for the next treatment cycle are adaptively optimized.

4. The high-pressure injector for injection into hard scar areas according to claim 3, characterized in that, The early warning feedback unit includes: The hierarchical construction module is configured to construct a hierarchical early warning mechanism based on the analysis results of the AI ​​analysis unit. The warning light (6) emits light signals of different colors and flashing patterns according to different risk levels. The risk levels include at least: Level 1 warning, which corresponds to the injection pressure approaching the safety threshold; Level 2 warning, which corresponds to the injection pressure experiencing an abnormally sharp increase or the pressure deviation exceeding the preset dynamic threshold.

5. The high-pressure injector for injection into hard scar areas according to claim 3, characterized in that, The AI ​​analysis unit also includes: The sample pre-storage module is configured to pre-store a multi-center scar feature database, which includes scar tissue feature data of different hardness, thickness, and type, as well as corresponding effective treatment parameters. The data recording module is configured to record and store complete data for each treatment, track subsequent efficacy evaluation information, and form treatment case files for optimizing subsequent treatments or updating the database.

6. The high-pressure injector for injection into hard scar areas according to claim 1, characterized in that, The reinforced needle seat locking mechanism (2) is located at the front end of the auxiliary cylinder (1) and is used to fix the injection needle (5) at the front end of the auxiliary cylinder (1). The spiral mechanical propulsion module (4) is located at the tail end of the auxiliary cylinder (1) and is in contact with the high-pressure sealing piston (3) to provide a smooth and controllable propulsion power for the high-pressure sealing piston (3). The high-pressure sealing piston (3) is tightly fitted with the inner wall of the injection needle (5) to achieve sealing inside the injection needle (5).

7. The high-pressure injector for injection into hard scar areas according to claim 6, characterized in that, The spiral mechanical propulsion module (4) includes a rotating handle (41), a threaded push rod (42), a thrust bearing (43), and a limiting structure (44). The rotating handle (41) is connected to the thrust bearing (43) through the threaded push rod (42), and the limiting structures (44) are symmetrically arranged on both sides of the thrust bearing (43).

8. The high-pressure injector for injection into hard scar areas according to claim 7, characterized in that, The limiting structure (44) includes a limiting bar (441) and a gear (442). The limiting bar (441) is composed of a short rack and a long rack. The short rack is fixed on both sides of the thrust bearing (43), and the long rack is fixed on the inner walls of both sides of the auxiliary cylinder (1). The short rack and the long rack are positioned opposite each other. There are two gears (442), which mesh between the short rack and the long rack on both sides of the thrust bearing (43).

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