Gait analysis signal acquisition system based on personalized skeleton guide plate

Abstract

The invention relates to a gait analysis signal acquisition system based on a personalized skeleton guide plate, and belongs to the technical field of medical instruments. Comprising a personalized bone guide plate which is provided with an adaptive walking ball, a signal transmitter clamping groove and a site signal transmitter fixed in the signal transmitter clamping groove, and a signal receiving and processing display is arranged outside the personalized bone guide plate. The personalized bone guide plate is formed by 3D printing according to the bone form of a patient, the site signal transmitter comprises a shell, a signal transmitting module and the like, and the signal receiving and processing displayer is provided with a center display processing box and a high-sensitivity Bluetooth signal receiving antenna. Through cooperation of all parts, the system can stably collect site signals when a patient walks, accurate gait information is obtained through processing and analysis, personalized gait analysis is achieved, effective auxiliary diagnosis, treatment and rehabilitation evaluation are achieved, and the rehabilitation effect and the life quality of the patient are improved.

Description

Technical Field

[0001] The invention relates to the technical field of military training equipment, and in particular to a gait analysis signal acquisition system based on a personalized bone guide plate. Background Art

[0002] In the field of modern medicine, gait analysis is of great significance for the diagnosis and treatment of many diseases. In orthopedics, rehabilitation, neurology and other disciplines, it can accurately obtain information such as lower limb movement, joint activity, muscle strength and force when patients walk, providing a key basis for the diagnosis of bone deformities, arthritis, movement disorders caused by nerve damage, and other diseases, and is indispensable for surgical planning, postoperative rehabilitation monitoring and training adjustments.

[0003] Traditional gait analysis relies on infrared marker recognition equipment. The principle is to attach infrared reflective markers to the joints and bone protrusions of the patient's lower limbs, use infrared recognition cameras to capture the marker reflection signal and convert it into position information, and then use computer software to reconstruct the motion model for analysis. However, this technology has significant defects.

[0004] First, the swing of the upper limbs and the twisting of the body when the patient walks can easily block the infrared recognition device, resulting in data loss or signal quality degradation. For example, Parkinson's patients have obvious tremors and large swings in the upper limbs, which often block the trunk position recognition device, resulting in missing gait data and interfering with the true gait judgment. Second, for patients with skeletal deformities, surface markers cannot accurately reflect the true movement inside the bones. Taking patients with congenital hip dislocation as an example, the deformity causes abnormal position and angle of the proximal femur, and the movement trajectory of the surface markers deviates from the true movement of the bones, resulting in large deviations in the analysis results, making it difficult to provide a reliable basis for precise treatment. In addition, traditional technologies also face challenges in operation. The markers are easily affected by sweating and friction and fall off, and the sticking position requires professional calibration. Slight deviations may lead to large errors in the analysis results, limiting its wide clinical application and accuracy improvement. Summary of the invention

[0005] In view of this, the purpose of the present invention is to propose a gait analysis signal acquisition system based on a personalized bone guide, which is equipped with a precise positioning and fixing structure (such as the elastic locking plate structure of the personalized bone guide), a low-friction compliant structure (such as an adaptive walking ball structure), a stable signal transmission structure (such as the Bluetooth signal transmission module structure of the site signal transmitter and the high-sensitivity Bluetooth signal receiving antenna structure of the signal receiving and processing display) and a skin-friendly stable structure (such as the buffer layer structure of the site signal transmitter), thereby solving the problem that the existing gait analysis technology lacks an acquisition system that can closely fit the individual bone morphology of the patient, effectively reduce motion interference, stably transmit accurate signals and ensure that the patient is comfortable to wear, resulting in large gait analysis errors, unstable signal acquisition, patient discomfort and low data processing efficiency, and cannot provide a comprehensive and accurate basis for diagnosis, treatment and rehabilitation evaluation.

[0006] The present invention is achieved through the following technical solutions:

[0007] A gait analysis signal acquisition system based on a personalized bone guide plate comprises a personalized bone guide plate, wherein the personalized bone guide plate is provided with a walking-adaptive ball, a signal transmitter slot is fixedly provided on the outer side of the personalized bone guide plate, a position signal transmitter is fixedly provided inside the signal transmitter slot, and a signal receiving and processing display is provided outside the position signal transmitter.

[0008] Furthermore, the personalized bone guide plate includes a bone guide plate body made by 3D printing according to the patient's bone morphology, a site signal transmitter placement hole is opened on the bone guide plate body, the signal transmitter slot is connected and arranged at the upper end of the site signal transmitter placement hole, an elastic locking piece for limiting and fixing the site signal transmitter inside the signal transmitter slot is fixedly arranged on the top of the signal transmitter slot, a ball fixing groove is opened at the interval of the site signal transmitter placement hole, and the walking-adaptive ball is rollingly assembled inside the ball fixing groove.

[0009] Furthermore, the sizes of the site signal transmitter, the site signal transmitter placement hole and the signal transmitter slot are matched, the site signal transmitter, the site signal transmitter placement hole and the signal transmitter slot are all regular hexagons, and connecting plates are fixedly provided at both ends of the bone guide plate body, and a fixed elastic band is fixedly provided on the connecting plate, and the end of the fixed elastic band is provided with an adhesive Velcro.

[0010] Furthermore, the location signal transmitter includes a shell, a signal transmission module is fixedly arranged inside the shell, the signal transmission module is connected to a charging power source via a line, and a buffer layer is fixedly arranged on the outer bottom of the shell.

[0011] Furthermore, the signal transmission module adopts a Bluetooth signal transmission chip.

[0012] Furthermore, the signal receiving and processing display includes a central display processing box and high-sensitivity Bluetooth signal receiving antennas connected to the central display processing box through lines and distributed in an array. The central display processing box includes a signal processing chip, a data processing unit, and a display and storage unit.

[0013] Furthermore, the high-sensitivity Bluetooth signal receiving antenna is installed at an effective distance around the periphery of the location signal transmitter.

[0014] Furthermore, a mark for indicating assembly is fixedly provided on the outer side of the personalized bone guide plate.

[0015] The beneficial effects of the present invention are:

[0016] The present invention is conducive to achieving accurate, stable, personalized and comfortable gait analysis technical effects through the combined use of the elastic locking plate structure of the personalized bone guide plate, the walking adaptive ball structure and the buffer layer structure of the site signal transmitter, and the Bluetooth signal transmission module structure.

[0017] The elastic locking plate structure allows the site signal transmitter to be tightly fixed in the signal transmitter slot of the personalized bone guide plate, effectively resisting movement shock and vibration, ensuring that it remains in a constant position under various movement states of the patient, and providing a reliable premise for the accurate collection of gait signals. The adaptive walking ball structure greatly optimizes the adaptability of the personalized bone guide plate to the leg. Its free rolling in the ball fixing groove effectively disperses stress and greatly reduces friction resistance, allowing the bone guide plate to flexibly adapt to the complex movement changes of the leg, avoiding local compression and discomfort, significantly improving the patient's wearing comfort, and will not interfere with the accuracy of signal collection.

[0018] The buffer layer structure of the site signal transmitter not only reduces the pressure on the skin, prevents skin damage and discomfort, but also prevents the displacement of the transmitter on the skin surface by moderate friction with the skin, further consolidating the stability of signal acquisition. The Bluetooth signal transmission module structure transmits signals at a stable frequency and power. Its strong penetration and anti-interference properties ensure the effective propagation of signals in complex human tissues and sports environments. It cooperates with the high-sensitivity Bluetooth signal receiving antenna of the signal receiving and processing display to achieve efficient data transmission and processing, and achieve personalized gait analysis.

[0019] The synergistic effect of these structures enables comprehensive and accurate collection of patient gait information, providing an accurate basis for diagnosis and helping to develop treatment and rehabilitation plans that suit individual needs. This has effectively promoted the advancement and application expansion of gait analysis technology in the field of medical rehabilitation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The structure diagram of the personalized bone guide device;

[0021] Figure 2 It is a front view of the inelastic locking plate structure of the personalized bone guide device;

[0022] Figure 3 It is a side view of the structure of the personalized bone guide plate device without the signal transmitter slot;

[0023] Figure 4 It is a top view of the structure of the personalized bone guide plate device without the signal transmitter slot;

[0024] Figure 5 is a cross-sectional view of a site signal transmitter;

[0025] Figure 6 It is a top view of the whole equipment;

[0026] Figure 7 A cutaway view of the process box is shown for center.

[0027] Description of reference numerals:

[0028] 1. Personalized bone guide plate; 101. Bone guide plate body; 103. Elastic locking piece; 104. Adaptive walking ball; 105. Ball fixing groove; 106. Connecting plate; 107. Fixed elastic band; 108. Adhesive Velcro; 109. Site signal transmitter placement hole; 2. Signal transmitter card slot; 3. Site signal transmitter; 301. Shell; 302. Signal transmission module; 303. Charging power supply; 304. Buffer layer; 4. Signal receiving and processing display; 401. Central display processing box; 402. High-sensitivity Bluetooth signal receiving antenna; 403. Signal processing chip; 404. Data processing unit; 405. Display and storage unit; 8. Assembly indication mark. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0032] In the above description of the present invention, it should be noted that the terms "one side", "the other side", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0033] In addition, the term "same" does not mean that the parts must be absolutely the same, but slight differences are allowed. The term "vertical" only means that the positional relationship between the parts is more vertical than "parallel", and does not mean that the structure must be completely vertical, but can be slightly tilted.

[0034] like Figure 1-7 As shown, an embodiment of the present invention provides: a gait analysis signal acquisition system based on a personalized bone guide plate, comprising a personalized bone guide plate 1

[0035] Bone guide plate body 101: Made of medical grade polyetheretherketone (PEEK) material by 3D printing, its shape is highly consistent with the three-dimensional morphology of the patient's leg bones. On the upper surface of the bone guide plate body 101, the site signal transmitter placement holes 109 and the ball fixing grooves 105 are evenly distributed. The site signal transmitter placement hole 109 is a regular hexagon, and its depth is adapted to half the height of the site signal transmitter 3. The ball fixing groove 105 is circular, with a diameter slightly larger than the diameter of the adaptive walking ball 104, and a depth of about two-thirds of the radius of the adaptive walking ball 104, so that the adaptive walking ball 104 can roll freely in it without falling out. The two ends of the bone guide plate body 101 are symmetrically fixed with connecting plates 106, which are perpendicular to the long axis direction of the bone guide plate body 101, and its outer side surface is flush with the outer side surface of the bone guide plate body 101. A fixed elastic band 107 is connected and fixed in the middle of the connecting plate 106. One end of the fixed elastic band 107 is firmly connected to the connecting plate 106 by sutures, and the other end is sewn with a Velcro 108. A mark 8 for indicating assembly is also fixedly provided on the outer edge of the bone guide body 101. The mark 8 is composed of the two words "left" and "right" and an upward arrow symbol, and is distributed in positions related to key parts such as the signal transmitter card slot 2 and the site signal transmitter placement hole 109, so as to facilitate medical staff to quickly locate during assembly and clarify the left and right directions of the bone guide and the correct orientation during installation.

[0036] Signal transmitter slot 2: Located at the upper end of the site signal transmitter placement hole 109, the two are connected and the central axis coincides. The signal transmitter slot 2 is also a regular hexagon, and its depth is adapted to the other half of the height of the site signal transmitter 3, so that the total depth of the site signal transmitter placement hole 109 and the signal transmitter slot 2 above it accurately matches the height of the signal transmitter 3. At the top of the signal transmitter slot 2, an elastic locking piece 103 is fixed. The elastic locking piece 103 is an arc-shaped spring piece, made of an elastic stainless steel sheet, one end of which is welded to the edge of the top of the signal transmitter slot 2. When the site signal transmitter 3 is inserted into the slot, the arc-shaped spring piece will open to both sides. After the site signal transmitter 3 slides into the slot, due to the retraction of the arc-shaped spring piece, its downward part just presses against the top plane of the signal transmitter 3, and it is fixed in the slot, thereby ensuring that the site signal transmitter 3 will not be displaced or fall out during movement.

[0037] Adaptive walking ball 104: Made of medical-grade ceramic material, it has a smooth surface and good wear resistance and biocompatibility. It has a diameter of 4 mm and is installed in the ball fixing groove 105. It maintains a gap of about 0.1-0.2 mm with the inner wall of the ball fixing groove 105 so that it can roll freely. When the patient's legs are bent or straightened, the adaptive walking ball 104 rolls in the ball fixing groove 105, reducing the friction resistance between the personalized bone guide plate 1 and the leg bones and surrounding tissues. At the same time, it can automatically adjust the contact point and force distribution according to the movement state of the leg to avoid local stress concentration causing discomfort or injury to the patient.

[0038] Site signal transmitter 3

[0039] Shell 301: A regular hexagonal hard medical plastic shell, whose side length matches the inner side length of the signal transmitter slot 2, with an error within ±0.2 mm, and whose height matches the depth of the signal transmitter slot 2, ensuring that it can be tightly embedded in the signal transmitter slot 2. A buffer layer 304 is fixed to the outside of the bottom of the shell 301. The buffer layer 304 is a 2.5 mm thick silicone layer with a fine texture on its surface. The friction between the silicone and the skin is used to increase the friction with the patient's skin, avoiding excessive displacement of the site signal transmitter 3 during movement, and at the same time reducing the pressure on the patient's skin to prevent the site signal transmitter 3 from sliding on the skin surface.

[0040] Signal transmission module 302: Located inside the housing 301, it uses an advanced Bluetooth signal transmission chip that can transmit Bluetooth signals outward at a frequency of 150 times per second. The transmitted signal contains the location information of the site signal transmitter 3 itself. The encoding of the location information adopts 24-bit binary encoding, which can accurately distinguish signal transmitters at different locations; it also contains motion state information, such as acceleration, angular velocity, etc., which are collected and encoded into the signal through built-in micro sensors; and signal strength information, which is used to reflect the distance between the signal transmitter and the receiving end and the signal transmission quality. The signal transmission power is stable at 3 milliwatts, and the signal has strong penetration, which can effectively pass through human tissue and some obstacles in the surrounding environment, and can be stably received within a radius of about 12 meters.

[0041] Charging power supply 303: Built-in rechargeable lithium-ion battery with a battery capacity of 700 mAh, sealed and waterproof design, in line with IP67 waterproof and dustproof standards. The battery is connected to the signal transmitting module 302 through a flexible circuit board to provide a stable power supply for the signal transmitting module 302. A universal USB-C charging interface is provided on the housing 301, located on one side of the housing 301. Through this interface, a common USB-C charger can be used to charge the battery, and a fast charging function is supported, which can fully charge the battery within 1.5 hours.

[0042] Signal receiving and processing display 4

[0043] The central display processing box 401 is a rectangular metal box, which is equipped with a signal processing chip 403, a data processing unit 404 and a display and storage unit 405. The signal processing chip 403 uses a high-performance chip based on the Bluetooth 5.0 standard, which can quickly filter, amplify and decode the Bluetooth signal received by the high-sensitivity Bluetooth signal receiving antenna 402. The data processing unit 404 is composed of a high-performance microprocessor and a special digital signal processing chip, and uses the Kalman filter algorithm and the particle filter algorithm to fuse and optimize the decoded signal data. It accurately calculates the angle change, displacement, speed and other motion parameters of each joint of the patient's leg according to the coding information of the site signal transmitter 3 and its corresponding fixed position information (pre-stored in the database inside the central display processing box 401, the database is associated with the design model of the personalized bone guide plate 1, and the installation position of the site signal transmitter 3 is determined when designing the personalized bone guide plate 1 and its information is entered into the database), and generates corresponding motion trajectory data according to the time series. The display and storage unit 405 includes a high-resolution liquid crystal display screen for displaying the data processed by the data processing unit 404 in real time and intuitively, and presenting the patient's gait in the form of a three-dimensional animation or a two-dimensional curve; it also includes a solid-state hard disk for storing the patient's basic information (such as name, age, gender, medical record number, etc.), the original data of gait analysis (such as the signal sequence, signal strength, timestamp, etc. of the signal transmitter 3 at each site) and the processed data (such as joint motion parameters, motion trajectory, etc.). The data storage format adopts the DICOM format commonly used in the medical industry, and has a data backup function to prevent data loss.

[0044] High-sensitivity Bluetooth signal receiving antenna 402: It is composed of multiple small Bluetooth receiving antenna units, which are distributed in a circular array on the outer surface of the central display processing box 401 and are installed at an effective distance of about 12 meters around the periphery of the site signal transmitter 3. Each antenna unit is connected to the signal processing chip 403 inside the central display processing box 401 through a coaxial cable, and can receive the Bluetooth signal emitted by the site signal transmitter 3 in all directions and at multiple angles, ensuring that the signal can be stably received in different spatial positions and motion postures.

[0045] When implementing this embodiment, the following steps are included:

[0046] Patient data collection and personalized bone guide plate design

[0047] First, the patient's lower limbs are scanned to obtain detailed three-dimensional structural data of the leg bones. The collected bone data is imported into professional medical image processing software for data preprocessing to extract a complete leg bone model. Next, the bone model data is imported into CAD software to design a three-dimensional model of a personalized bone guide plate 1 based on the professional requirements of gait analysis and the principles of human kinematics.

[0048] Fabrication and assembly of personalized bone guide plate and site signal transmitter

[0049] The designed personalized bone guide plate 1 model data is transferred to the 3D printer and printed using medical grade polyetheretherketone (PEEK) material. After printing, the site signal transmitter 3 is assembled. First, the shell 301 of the site signal transmitter 3 is aligned with the site signal transmitter placement hole 109 on the personalized bone guide plate 1, and gently inserted so that the shell 301 gradually enters the signal transmitter slot 2. During the insertion process, the elastic locking piece 103 at the top of the signal transmitter slot 2 will be squeezed by the shell 301 and spread to both sides. When the shell 301 is fully inserted into the signal transmitter slot 2, the elastic locking piece 103 retracts, and its downward part just abuts against the top plane of the shell 301, and the site signal transmitter 3 is firmly fixed in the slot. After assembly, use a professional Bluetooth signal detection device to check the site signal transmitter 3 to confirm that its installation position is accurate, the power connection is normal, the Bluetooth signal transmission is stable, and the identification code information is correct. The specific inspection method is to place the Bluetooth signal detection device at a distance of about 10 meters from the site signal transmitter 3, detect whether the signal frequency it transmits is 150 times per second, whether the transmission power is 3 milliwatts, whether the coding information in the signal is consistent with the pre-set one, and whether the signal strength is within the normal range.

[0050] Patient wear and data collection

[0051] The patient wears the personalized bone guide plate 1 with the site signal transmitter 3 installed under the professional assistance of the medical staff. First, the personalized bone guide plate 1 is placed at the corresponding position of the patient's leg, and is accurately placed according to the assembly indicator mark 8 composed of the words "left" and "right" and an upward arrow on the outside of the personalized bone guide plate 1, so that the inner surface of the bone guide plate body 101 is closely fitted with the bone. Then, the fixed elastic band 107 is passed around the patient's leg, and the tightness of the fixed elastic band 107 is adjusted by sticking Velcro 108, so that the patient feels comfortable and the personalized bone guide plate 1 does not move. During the adjustment process, let the patient perform slight leg flexion and extension, rotation and other activities to check the stability and comfort of the personalized bone guide plate 1, to ensure that the personalized bone guide plate 1 can always maintain a good fitting state during the patient's exercise, and the site signal transmitter 3 will not affect the accuracy of signal transmission due to shaking or displacement. Turn on the signal reception and processing display 4 to ensure that the high-sensitivity Bluetooth signal receiving antenna 402 is in normal working condition and surrounds the site signal transmitter 3 at an effective distance of about 12 meters. The patient walks naturally in the designated gait analysis experimental area. When the patient starts walking, the site signal transmitter 3 transmits the Bluetooth signal in real time, and the high-sensitivity Bluetooth signal receiving antenna 402 of the signal receiving and processing display 4 receives the signal and transmits the signal to the central display processing box 401. During the data collection process, the medical staff can observe the patient's gait in real time through the display screen of the display and storage unit 405 of the signal receiving and processing display 4 to ensure the integrity and accuracy of the data collection. The collection time is flexibly determined according to actual needs, generally 3-5 minutes, to obtain a sufficient number of complete gait cycle data. In order to improve the accuracy and reliability of the data, the patient can be allowed to perform multiple data collections at different walking speeds (such as slow walking, normal walking, fast walking), different walking surfaces (such as flat surfaces, sloped surfaces, rubber surfaces with certain friction, etc.) and different walking postures (such as straight walking, turning walking, walking across obstacles, etc.) to comprehensively evaluate the patient's gait characteristics.

[0052] Data processing and analysis

[0053] After the signal receiving and processing display 4 has collected data, the internal signal processing chip 403 first decodes and analyzes the received Bluetooth signal, and extracts key data such as position coding information, motion state information, and signal strength information. Then, the data processing unit 404 fuses and optimizes the data, effectively removes abnormal data, and calculates the angle change, displacement, speed and other motion parameters of each joint of the patient's leg according to the coding information of the site signal transmitter 3 and its corresponding fixed position information, and generates corresponding motion trajectory data according to the time series. For example, through the comprehensive analysis of the site signal transmitter 3 data at the hip joint, knee joint and ankle joint, the motion trajectory of the lower limbs in a gait cycle is accurately depicted, including the flexion and extension angle change curves of each joint, the displacement curves of each bone segment, etc., so as to comprehensively evaluate whether the patient's gait pattern is normal, whether there are problems such as limited joint activity, unbalanced muscle strength, and poor gait symmetry. The processed data is stored in the display and storage unit 405 internal storage device of the signal receiving and processing display 4, and the data can be transmitted to the hospital's medical information system or special gait analysis software through a network interface or a mobile storage device for further in-depth analysis and research. Medical staff can make detailed assessments of patients' gait conditions based on these data, such as accurately determining whether joint movement is limited, whether muscle strength is balanced, whether gait is symmetrical, etc., thereby providing a strong scientific basis for patient diagnosis, treatment plan formulation, and rehabilitation evaluation. For example, for patients with knee arthritis, by analyzing the angle change range and force conditions of the knee joint in the gait data, the severity of arthritis can be assessed, and personalized treatment plans can be formulated, such as physical therapy, drug therapy, or surgical treatment; for postoperative rehabilitation patients, by comparing preoperative and postoperative gait data, the rehabilitation effect can be intuitively understood, and the rehabilitation training plan can be adjusted in time to promote faster and better recovery of patients.

[0054] The technical effects of this embodiment are as follows:

[0055] Accurate and personalized gait analysis

[0056] Since the personalized bone guide plate 1 is 3D printed according to the patient's bone morphology, it can accurately fit the patient's leg bones. The site signal transmitter 3 is fixed at the key position through the precisely designed placement holes and slots 2, so that the collected signal can accurately reflect the actual movement state of the patient's bones. Compared with traditional general-purpose gait analysis equipment, this device can effectively avoid analysis errors caused by the mismatch between the equipment and the patient's body, especially for patients with bone deformities or special physiological structures, and can provide more reliable and accurate diagnosis and treatment basis. For example, when performing gait analysis on patients with congenital hip dislocation, the personalized bone guide plate 1 can fit the patient's deformed hip joint tightly, and the site signal transmitter 3 can accurately capture the abnormal movement trajectory of the hip joint, providing key data support for doctors to formulate targeted surgery or rehabilitation plans.

[0057] Stable and reliable signal transmission and acquisition

[0058] The signal transmission module 302 of the site signal transmitter 3 adopts an advanced Bluetooth signal transmission chip, the transmission power is stable and the signal has strong penetration and anti-interference, and can be effectively transmitted in a complex human tissue environment. At the same time, the high-sensitivity Bluetooth signal receiving antenna 402 and the high-performance signal processing chip 403 of the signal receiving and processing display 4 can ensure stable signal transmission and accurate acquisition in a complex human motion environment and electromagnetic environment, reduce the occurrence of signal loss or interference, and improve the integrity and reliability of gait analysis data. Even when the patient is moving rapidly or there are other electronic devices around, the signal can still be stably acquired and processed, ensuring the accuracy and effectiveness of the gait analysis results. For example, in a hospital ward or rehabilitation treatment area, there may be electromagnetic interference generated by various medical equipment around, but the signal transmission system of this device can effectively resist these interferences and stably collect and process gait data.

[0059] Good wearing comfort and adaptability

[0060] The design of the adaptive walking ball 104 of the personalized bone guide plate 1 significantly improves the patient's wearing experience. During the patient's leg movement, the adaptive walking ball 104 can effectively reduce the friction resistance between the personalized bone guide plate 1 and the leg tissue and bones, so that the personalized bone guide plate 1 can better adapt to the movement changes of the legs and avoid discomfort or damage to the patient due to excessive local pressure. The elastic locking piece 103 ensures the firm installation of the site signal transmitter 3. The design of the fixed elastic band 107 and the adhesive Velcro 108 is convenient for the patient to wear and can automatically adjust the tightness according to the expansion and contraction of the leg muscles. The overall design takes into account the patient's wearing comfort and ease of use, which is conducive to long-term gait monitoring and data collection, improves the patient's compliance with the equipment, and provides a guarantee for the comprehensive and accurate acquisition of the patient's gait data. For example, when the patient is undergoing long-term walking training or daily activity monitoring, the personalized bone guide plate 1 can always remain stable and will not cause too much discomfort to the patient, ensuring the continuity and effectiveness of data collection.

[0061] In this embodiment, when the legs are bent while walking, the personalized bone guide plate does not hinder normal walking with bent legs mainly due to the following reasons:

[0062] Function of Adaptive Walking Ball: The Adaptive Walking Ball installed on the personalized bone guide can effectively reduce the friction resistance between the personalized bone guide and the leg bones and surrounding tissues during the leg bending process. When the leg is bent, the movement trend of the bones will cause relative displacement between the guide and the tissue, and the ball can roll freely in the ball fixing groove, converting the original sliding friction into rolling friction, so that the personalized bone guide can better adapt to the movement changes of the leg, avoiding discomfort or injury to the patient due to excessive local pressure or friction, and reducing the obstruction to the leg bending movement.

[0063] Advantages of elastic fixing structure: The site signal transmitter is fixed in the signal transmitter slot by an elastic locking piece. This elastic fixing method allows a certain degree of micro displacement and buffering. When the leg is bent, the slight pulling or squeezing caused by the change in bone morphology will not be directly transmitted and hindered by the rigidity of the fixing structure. The elastic locking piece can be adaptively adjusted within a certain range to keep the site signal transmitter relatively stable without adding additional constraint resistance to the leg bending.

[0064] Personalized fit: Although the bone position relationship will change when the leg is bent relative to the personalized bone guide printed initially, it is highly fitted to the leg bones in the initial state because it is 3D printed based on the patient's bone morphology. Even if there is relative displacement during the bending process, the fit is still within an acceptable range, and the design shape and fixed position of the overall guide are based on the range of motion and physiological structure of the leg, and will not cause serious obstacles due to slight misfits. For example, in the design of the knee joint, ankle joint and other parts, a certain amount of space and activity margin is reserved to adapt to the morphological changes during bending.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A gait analysis signal acquisition system based on a personalized bone guide, characterized in that: It comprises a personalized bone guide plate, on which a walking-adaptive ball is arranged, a signal transmitter slot is fixedly arranged on the outer side of the personalized bone guide plate, a position signal transmitter is fixedly arranged inside the signal transmitter slot, and a signal receiving and processing display is arranged outside the position signal transmitter.

2. A gait analysis signal acquisition system based on a personalized bone guide according to claim 1, characterized in that: The personalized bone guide plate comprises a bone guide plate body made by 3D printing according to the patient's bone morphology, a site signal transmitter placement hole is provided on the bone guide plate body, the signal transmitter card slot is connected and arranged at the upper end of the site signal transmitter placement hole, an elastic locking piece for limiting and fixing the site signal transmitter inside the signal transmitter card slot is fixedly arranged on the top of the signal transmitter card slot, a ball fixing groove is provided at the interval of the site signal transmitter placement hole, and the walking-adaptive ball is rollingly assembled inside the ball fixing groove.

3. A gait analysis signal acquisition system based on a personalized bone guide according to claim 2, characterized in that: The sizes of the site signal transmitter, the site signal transmitter placement hole and the signal transmitter slot are matched, and the site signal transmitter, the site signal transmitter, the site signal transmitter placement hole and the signal transmitter slot are all regular hexagons. Connecting plates are fixedly provided at both ends of the bone guide plate body, and a fixed elastic band is fixedly provided on the connecting plate, and the end of the fixed elastic band is provided with an adhesive Velcro.

4. A gait analysis signal acquisition system based on a personalized bone guide according to claim 3, characterized in that: The location signal transmitter comprises a shell, a signal transmitting module is fixedly arranged inside the shell, the signal transmitting module is connected with a charging power source via a line, and a buffer layer is fixedly arranged at the bottom of the outer side of the shell.

5. A gait analysis signal acquisition system based on a personalized bone guide according to claim 4, characterized in that: The signal transmitting module adopts a Bluetooth signal transmitting chip.

6. The gait analysis signal acquisition system based on the personalized bone guide according to claim 1, characterized in that: The signal receiving and processing display comprises a central display processing box and high-sensitivity Bluetooth signal receiving antennas connected to the central display processing box through lines and distributed in an array. The central display processing box comprises a signal processing chip, a data processing unit and a display and storage unit.

7. A gait analysis signal acquisition system based on a personalized bone guide according to claim 6, characterized in that :The high-sensitivity Bluetooth signal receiving antenna is installed at an effective distance around the periphery of the site signal transmitter.

8. The gait analysis signal acquisition system based on the personalized bone guide according to claim 2, characterized in that The outer side of the personalized bone guide plate is fixedly provided with a mark for indicating assembly.

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