CN120000211A - A gait analysis signal acquisition system based on personalized bone guide - Google Patents

Abstract

The invention relates to a gait analysis signal acquisition system based on a personalized bone guide plate, and belongs to the technical field of medical appliances. Comprises a personalized bone guide plate, which is provided with a walking ball, a signal emitter clamping groove and a site signal emitter fixed in the walking ball, and is externally provided with a signal receiving and processing display. The personalized bone guide plate is formed by 3D printing according to the bone shape of a patient, the site signal transmitter comprises a shell, a signal transmitting module and the like, and the signal receiving processing display is provided with a central display processing box and a high-sensitivity Bluetooth signal receiving antenna. The system can stabilize the acquisition point signal when a patient walks through the cooperation of all the components, acquire accurate gait information through processing analysis, realize personalized gait analysis, effectively assist diagnosis, treatment and rehabilitation evaluation, and improve the rehabilitation effect and the life quality of the patient.

Description

Gait analysis signal acquisition system based on personalized skeleton guide plate

Technical Field

The invention relates to the technical field of military training instruments, in particular to a gait analysis signal acquisition system based on a personalized skeleton guide plate.

Background

In the field of modern medicine, gait analysis is of remarkable diagnostic significance for a number of diseases. In orthopaedics, rehabilitation, neuroscience and other multidisciplinary, the device can accurately acquire information such as lower limb movement, joint movement, muscle strength, stress and the like when a patient walks, provides a key basis for diagnosing diseases such as skeletal deformity, arthritis, nerve injury induced dyskinesia and the like, and is indispensable for operation planning, postoperative rehabilitation monitoring and training adjustment.

Conventional gait analysis relies heavily on infrared marker recognition equipment. The principle is that infrared reflection markers are stuck at the protruding parts of the joints and bones of the lower limbs of a patient, the infrared recognition cameras capture the reflection signals of the markers and convert the reflection signals into position information, and then the position information is reconstructed by computer software to analyze a motion model. But this technique has significant drawbacks.

Firstly, the upper limb swing and the body torsion are easy to block the infrared identification device when a patient walks, so that data is lost or signal quality is reduced. If the upper limb tremor of the parkinsonism patient is obvious and the swing is large, the trunk part recognition device is often blocked, gait data are lost, and the true gait judgment is interfered. Secondly, for patients with skeletal deformity, the body surface markers cannot accurately reflect the real movement inside the bone. Taking a congenital hip dislocation patient as an example, the proximal femur position and angle are abnormal due to deformity, and the body surface marker movement track deviates from the bone true movement, so that the analysis result deviation is large, and a reliable basis is difficult to provide for accurate treatment. In addition, the traditional technology faces challenges in operation, the label is easy to be adhered and fall off due to perspiration and friction, the adhering position needs to be calibrated in a professional mode, and small deviation can cause large analysis result errors, so that the wide clinical application and the improvement of accuracy of the label are limited.

Disclosure of Invention

Therefore, the invention aims to provide a gait analysis signal acquisition system based on a personalized bone guide plate, which is provided with an accurate positioning and fixing structure (such as an elastic locking piece structure of the personalized bone guide plate), a low-friction compliant structure (such as a walking ball adapting structure), a stable signal transmission structure (such as a Bluetooth signal transmitting module structure of a site signal transmitter and a high-sensitivity Bluetooth signal receiving antenna structure of a signal receiving and processing display) and a skin friendly stable structure (such as a buffer layer structure of the site signal transmitter) at the same time, so that the problems that the existing gait analysis technology lacks an acquisition system which can be tightly attached to the individual bone morphology of a patient, effectively reduce motion interference, stably transmit accurate signals and ensure the wearing comfort of the patient, and has large gait analysis error, unstable signal acquisition, uncomfortable wearing of the patient and low data processing efficiency can not provide comprehensive and accurate basis for diagnosis, treatment and rehabilitation evaluation can be solved.

The invention is realized by the following technical scheme:

The gait analysis signal acquisition system based on the personalized bone guide plate comprises a personalized bone guide plate, wherein the personalized bone guide plate is provided with an adaptive walking ball, a signal emitter clamping groove is fixedly arranged on the outer side of the personalized bone guide plate, a site signal emitter is fixedly arranged in the signal emitter clamping groove in a limiting mode, and a signal receiving and processing display is arranged outside the site signal emitter.

Further, individualized bone conduction board includes the bone conduction board main part of making according to patient's bone form 3D printing, set up the position signal transmitter on the bone conduction board main part and place the hole, signal transmitter draw-in groove intercommunication set up in position signal transmitter places the hole upper end, signal transmitter draw-in groove top is fixed be provided with be used for with the spacing fixed in of position signal transmitter the inside elasticity locking piece of signal transmitter draw-in groove, position signal transmitter places hole interval department and has seted up the ball fixed slot, the inside rolling assembly of ball fixed slot is provided with adaptation walking ball.

Further, hole and signal transmitter draw-in groove size match are placed to site signal transmitter and site signal transmitter, site signal transmitter place hole and signal transmitter draw-in groove and are regular hexagon, bone conduction board main part both ends are fixed to be provided with the connecting plate, connect fixedly on the connecting plate and be provided with fixed elastic band, fixed elastic band end is provided with and pastes the magic subsides.

Further, the site signal transmitter comprises a shell, a signal transmitting module is fixedly arranged inside the shell, a charging power supply is arranged on the signal transmitting module through line connection, and a buffer layer is fixedly arranged at the bottom of the outer side of the shell.

Further, the signal transmitting module adopts a Bluetooth signal transmitting chip.

Further, the signal receiving and processing display comprises a central display processing box and high-sensitivity Bluetooth signal receiving antennas which are connected with the central display processing box through lines and distributed in an array mode, and the central display processing box comprises a signal processing chip, a data processing unit and a display and storage unit.

Further, the high-sensitivity Bluetooth signal receiving antenna is arranged and installed around the effective distance of the periphery of the site signal transmitter.

Further, the outside of the personalized bone guide plate is fixedly provided with a mark for indicating assembly.

The invention has the beneficial effects that:

The invention is favorable for realizing accurate, stable, personalized and comfortable gait analysis technical effects by the combined application of the elastic locking piece structure of the personalized bone guide plate, the buffer layer structure of the adaptive walking ball structure and the site signal transmitter and the Bluetooth signal transmitting module structure.

The elastic locking piece structure enables the site signal emitter to be tightly fixed in the signal emitter clamping groove of the personalized bone guide plate, effectively resists motion impact and vibration, ensures the constant position of the site signal emitter in various motion states of a patient, and provides a reliable premise for accurate acquisition of gait signals. The adaptability of individualized bone guide plate and shank has then greatly been optimized to adaptation walking ball structure, and its free roll in ball fixed slot effectively disperses stress, reduces frictional resistance by a wide margin, lets the bone guide plate can nimble compliance shank complex motion change, avoids local oppression and discomfort, is showing and is promoting patient and wears the comfort level, and can not disturb signal acquisition's accuracy.

The buffer layer structure of the site signal transmitter not only reduces the pressure on the skin and prevents skin injury and discomfort, but also prevents the displacement of the transmitter on the skin surface by virtue of moderate friction with the skin, thereby further stabilizing the stability of signal acquisition. The Bluetooth signal transmitting module structure transmits signals with stable frequency and power, has strong penetrability and anti-interference, ensures effective propagation of the signals in complex human tissues and motion environments, and realizes high-efficiency data transmission and processing in cooperation with a high-sensitivity Bluetooth signal receiving antenna of a signal receiving processing display, thereby achieving personalized gait analysis.

The synergistic effect of the structures comprehensively and accurately acquires gait information of patients, provides accurate basis for diagnosis, establishes treatment and rehabilitation schemes of individuals attached by assistance, and powerfully promotes progress and application expansion of gait analysis technology in the field of medical rehabilitation.

Drawings

FIG. 1 is a block diagram of a personalized bone conduction device;

FIG. 2 is a front view of the inelastic locking tab structure of the personalized bone conduction device;

FIG. 3 is a side view of a signaling-free emitter card slot configuration of a personalized bone conduction device;

FIG. 4 is a top view of a signal emitter-free card slot configuration of the personalized bone conduction device;

FIG. 5 is a cross-sectional view of a site signal emitter;

FIG. 6 is a top view of the overall apparatus;

fig. 7 is a cross-sectional view of the processing chamber shown in the center.

Reference numerals illustrate:

1. The device comprises a personalized bone guide plate, 101, a bone guide plate main body, 103, an elastic locking piece, 104, an adaptive walking ball, 105, a ball fixing groove, 106, a connecting plate, 107, a fixed elastic band, 108, a sticking magic tape, 109, a site signal transmitter placing hole, 2, a signal transmitter clamping groove, 3, a site signal transmitter, 301, a shell, 302, a signal transmitting module, 303, a charging power supply, 304, a buffer layer, 4, a signal receiving and processing display, 401, a central display and processing box, 402, a high-sensitivity Bluetooth signal receiving antenna, 403, a signal processing chip, 404, a data processing unit, 405, a display and storage unit and 8, and an assembly indication mark.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the foregoing description of the invention, it should be noted that the azimuth or positional relationship indicated by the terms "one side", "the other side", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship in which the inventive product is conventionally put in use, are merely for convenience of describing the invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Furthermore, the terms "identical" and the like do not denote that the components are identical, but rather that there may be minor differences. The term "perpendicular" merely means that the positional relationship between the components is more perpendicular than "parallel" and does not mean that the structure must be perfectly perpendicular, but may be slightly tilted.

As shown in fig. 1-7, the gait analysis signal acquisition system based on the personalized bone conduction plate comprises a personalized bone conduction plate 1

The bone guide plate main body 101 is made of medical polyether ether ketone (PEEK) materials through 3D printing, and the shape of the bone guide plate main body is in high fit with the three-dimensional shape of the leg bones of a patient. On the upper surface of the bone conduction plate main body 101, site signal emitter placement holes 109 and ball fixing grooves 105 are uniformly distributed. The site signal emitter placement hole 109 is a regular hexagon with a depth that matches half the height of the site signal emitter 3. The ball fixing groove 105 is circular, has a diameter slightly larger than that of the adaptation traveling ball 104, and has a depth of about two thirds of the radius of the adaptation traveling ball 104, so that the adaptation traveling ball 104 can freely roll therein without falling out. The two ends of the bone guide plate main body 101 are symmetrically fixed with the connecting plates 106, the connecting plates 106 are perpendicular to the long axis direction of the bone guide plate main body 101, and the outer side surfaces of the connecting plates are flush with the outer side surfaces of the bone guide plate main body 101. A fixed elastic band 107 is fixedly connected at the middle part of the connecting plate 106, one end of the fixed elastic band 107 is firmly connected with the connecting plate 106 through a suture, and a sticking magic tape 108 is sewn at the other end. The outer side edge of the bone guide plate main body 101 is also fixedly provided with a mark 8 for indicating assembly, wherein the mark 8 consists of a left word, a right word and an upward arrow sign, and is distributed at the positions related to key parts such as the signal emitter clamping groove 2, the site signal emitter placing hole 109 and the like, so that the bone guide plate is convenient for medical staff to quickly position during assembly, and the left and right directions of the bone guide plate and the correct orientation during installation are defined.

The signal emitter clamping groove 2 is positioned at the upper end of the site signal emitter placing hole 109, and the two are communicated and the central axes are coincident. The signal emitter card slot 2 is also regular hexagonal in shape with a depth that is adapted to the other half of the height of the site signal emitter 3 such that the total depth of the site signal emitter placement hole 109 and the signal emitter card slot 2 above it is exactly matched to the height of the signal emitter 3. At the top of the signal emitter clamping groove 2, an elastic locking piece 103 is fixed. The elastic locking piece 103 is an arc-shaped elastic piece and is made of elastic stainless steel sheets, one end of the elastic locking piece is welded at the edge of the top of the signal emitter clamping groove 2, when the site signal emitter 3 is inserted into the clamping groove, the arc-shaped elastic piece can be spread towards two sides, after the site signal emitter 3 slides into the groove, the downward part of the arc-shaped elastic piece rightly props against the top plane of the signal emitter 3 due to retraction of the arc-shaped elastic piece, and the arc-shaped elastic piece is clamped and fixed in the clamping groove, so that the site signal emitter 3 cannot displace or deviate from in the moving process.

The adaptive walking ball 104 is made of medical grade ceramic material, has smooth surface and good wear resistance and biocompatibility. Which has a diameter of 4mm, is installed in the ball fixing groove 105 with a clearance of about 0.1-0.2 mm maintained with the inner wall of the ball fixing groove 105 so as to be freely rotatable. When the legs of a patient bend or straighten, the walking ball 104 rolls in the ball fixing groove 105, so that the friction resistance between the personalized bone guide plate 1 and the bones and surrounding tissues of the legs is reduced, and meanwhile, the contact point and the stress distribution can be automatically adjusted according to the movement state of the legs, so that discomfort or damage to the patient caused by local stress concentration is avoided.

Site signal emitter 3

The shell 301 is a regular hexagonal hard medical plastic shell, the side length of the shell is matched with the inner side length of the signal emitter clamping groove 2, the error is within +/-0.2 millimeter, and the height of the shell is matched with the depth of the signal emitter clamping groove 2, so that the shell can be tightly embedded into the signal emitter clamping groove 2. The buffer layer 304 is fixed on the outer side of the bottom of the shell 301, the buffer layer 304 is a silica gel layer with the thickness of 2.5 mm, fine textures are formed on the surface of the buffer layer, friction between the silica gel and skin of a patient is increased by using friction force between the silica gel and the skin, the situation that the offset is too large when the site signal emitter 3 moves is avoided, meanwhile, pressure on the skin of the patient can be relieved, and the site signal emitter 3 is prevented from sliding on the surface of the skin.

The signal transmitting module 302 is located inside the housing 301, and an advanced bluetooth signal transmitting chip is used, and the chip can transmit bluetooth signals outwards at a frequency of 150 times per second. The transmitted signal contains the position information of the site signal transmitter 3, the position information is encoded by 24-bit binary codes, the signal transmitters at different positions can be accurately distinguished, the signal also contains motion state information such as acceleration, angular velocity and the like, the motion state information is acquired and encoded into the signal through a built-in micro sensor, and the signal strength information is used for reflecting the distance between the signal transmitter and a receiving end and the signal transmission quality. The signal transmitting power is stabilized at 3 milliwatts, the signal has stronger penetrability, can effectively pass through some obstacles in human tissues and surrounding environment, and can be stably received within the radius of about 12 meters.

And the charging power supply 303 is internally provided with a rechargeable lithium ion battery, and when the battery capacity is 700 milliamperes, a sealing waterproof design is adopted, so that the waterproof and dustproof standard of IP67 is met. The battery is connected with the signal emitting module 302 through a flexible circuit board to provide a stable power supply to the signal emitting module 302. The housing 301 is provided with a universal USB-C charging interface on one side of the housing 301 through which a battery can be charged using a conventional USB-C charger and supports a quick charge function, which can fully charge the battery within 1.5 hours.

Signal receiving processing display 4

The central display processing box 401 is a cuboid metal box body, and is internally provided with a signal processing chip 403, a data processing unit 404 and a display and storage unit 405. The signal processing chip 403 adopts a high-performance chip based on the bluetooth 5.0 standard, and can perform rapid filtering, amplifying and decoding processing on 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 performs fusion and optimization processing on the decoded signal data by using a kalman filter algorithm and a particle filter algorithm. According to the coding information of the site signal emitter 3 and the corresponding fixed position information (pre-stored in a database in the central display processing box 401, the database is associated with a design model of the personalized bone conduction plate 1, and the installation position of the site signal emitter 3 is determined and the information is input into the database when the personalized bone conduction plate 1 is designed), the motion parameters such as the angle change, the displacement, the speed and the like of each joint of the leg of a patient are accurately calculated, and corresponding motion track data are generated according to a time sequence. The display and storage unit 405 includes a high-resolution lcd screen for intuitively displaying the data processed by the data processing unit 404 in real time, presenting the gait of the patient in the form of three-dimensional animation or two-dimensional curve, and a solid state disk for storing basic information (such as name, age, sex, medical record number, etc.) of the patient, raw data of gait analysis (such as signal sequence, signal strength, time stamp, etc. of each site signal emitter 3), and processed data (such as joint movement parameters, movement track, etc.), where the data storage format adopts DICOM format common to medical industry, and has a data backup function, so as to prevent data loss.

The high-sensitivity Bluetooth signal receiving antenna 402 is composed of a plurality of small Bluetooth receiving antenna units, is distributed on the outer side surface of the central display processing box 401 in a ring-shaped array, and is arranged and installed at an effective distance of about 12 meters around the periphery of the site signal transmitter 3. Each antenna unit is connected with the signal processing chip 403 inside the central display processing box 401 through a coaxial cable, and can receive the bluetooth signals emitted by the site signal emitter 3 in an omnibearing and multi-angle manner, so that signals can be stably received in different spatial positions and motion postures.

The embodiment is implemented by the following steps:

Patient data acquisition and personalized bone conduction plate design

First, the patient's lower limb is scanned to obtain detailed three-dimensional structural data of the leg bones. And importing the acquired bone data into professional medical image processing software, preprocessing the data, and extracting a complete leg bone model. Then, the bone model data is imported into CAD software, and a three-dimensional model of the personalized bone conduction plate 1 is designed according to the professional requirements of gait analysis and the principle of human kinematics.

Personalized bone guide and site signal emitter fabrication and assembly

And transmitting the designed personalized bone guide plate 1 model data to a 3D printer, and printing by adopting a medical grade polyether ether ketone (PEEK) material. After printing, the site signal emitter 3 is assembled, and the shell 301 of the site signal emitter 3 is aligned with the site signal emitter placing hole 109 on the personalized bone conduction plate 1, and is gently inserted, so that the shell 301 gradually enters the signal emitter clamping groove 2. During the insertion process, the elastic locking piece 103 at the top of the signal emitter clamping groove 2 can be spread to two sides due to the extrusion of the shell 301, when the shell 301 is completely inserted into the signal emitter clamping groove 2, the elastic locking piece 103 retracts, the downward part of the elastic locking piece directly abuts against the top plane of the shell 301, and the site signal emitter 3 is firmly limited and fixed in the clamping groove. After the assembly is completed, the special Bluetooth signal detection equipment is used for checking the position signal transmitter 3, so that the installation position is accurate and error-free, the power supply is normally connected, the Bluetooth signal transmission is stable, and the identification coding information is accurate and error-free. The specific inspection method is that the Bluetooth signal detection device is placed at a position which is about 10 meters away from the site signal transmitter 3, and whether the frequency of the transmitted signal is 150 times per second, the transmitting power is 3 milliwatts, the coding information in the signal is consistent with the preset value, and the signal intensity is in the normal range is detected.

Patient wear and data acquisition

The patient wears the personalized bone conduction plate 1 equipped with the site signal emitter 3 with the professional assistance of medical staff. The personalized bone guide plate 1 is firstly placed at the corresponding position of the leg of a patient, and the assembly indication mark 8 consisting of left word, right word and upward arrow on the outer side of the personalized bone guide plate 1 is accurately placed, so that the inner surface of the bone guide plate main body 101 is tightly attached to bones. Then, the elastic fixing band 107 is wound around the leg of the patient, and the tightness of the elastic fixing band 107 is adjusted by sticking the magic tape 108, so that the patient feels comfortable and the personalized bone guide plate 1 does not displace. In the adjustment process, the patient is enabled to perform slight leg bending and stretching, rotation and other activities, stability and comfort of the personalized bone guide plate 1 are checked, the personalized bone guide plate 1 is ensured to be always kept in a good fitting state in the patient movement process, and the accuracy of signal transmission is not affected by shaking or displacement of the site signal transmitter 3. The signal receiving process display 4 is turned on to ensure that the high sensitivity bluetooth signal receiving antenna 402 is in normal operation and is located at an effective distance of about 12 meters around the periphery of the site signal transmitter 3. The patient walks naturally in the designated gait analysis experimental area. When the patient starts walking, the site signal transmitter 3 transmits a bluetooth signal in real time, and the high-sensitivity bluetooth signal receiving antenna 402 of the signal receiving process display 4 receives the signal and transmits the signal to the center display process box 401. In the data acquisition process, medical staff can observe the gait condition of a patient in real time through the display of the signal receiving and processing display 4 and the display screen of the storage unit 405, so that the integrity and the accuracy of data acquisition are ensured. The acquisition time is flexibly determined according to actual requirements, and is generally 3-5 minutes, so that a sufficient number of complete gait cycle data can be acquired. In order to improve the accuracy and reliability of data, a patient can perform multiple data acquisition under different walking speeds (such as slow walking, normal walking and fast walking), different walking pavements (such as a flat pavement, a slope pavement, a rubber pavement with certain friction force and the like) and different walking postures (such as straight walking, turning walking and walking across obstacles and the like) so as to comprehensively evaluate the gait characteristics of the patient.

Data processing and analysis

After the signal receiving and processing display 4 finishes collecting data, the internal signal processing chip 403 decodes and analyzes the received bluetooth signal first, and extracts key data such as position coding information, motion state information, signal intensity information and the like. Then, the data processing unit 404 performs fusion and optimization processing on the data, so as to effectively remove abnormal data, calculate motion parameters such as angle change, displacement, speed and the like of each joint of the leg of the patient according to the coding information of the site signal transmitter 3 and the corresponding fixed position information, and generate corresponding motion trail data according to the time sequence. For example, by comprehensively analyzing the data of the position signal transmitters 3 at the hip joint, the knee joint and the ankle joint, the motion trail of the lower limb in a gait cycle is accurately depicted, including a Qu Shenjiao-degree change curve of each joint, a displacement curve of each bone segment and the like, so that whether the gait pattern of a patient is normal or not is comprehensively estimated, and whether the problems of limited joint movement, unbalanced muscle strength, poor gait symmetry and the like exist or not. The processed data is stored in a memory device within the display and memory unit 405 of the signal receiving processing display 4, and can be transmitted to a medical information system of a hospital or special gait analysis software through a network interface or a mobile memory device for further deep analysis and research. The medical staff can evaluate the gait condition of the patient in detail according to the data, such as whether the joint movement is limited, whether the muscle strength is balanced, whether the gait is symmetrical or not, and the like, so that powerful scientific basis is provided for diagnosis, treatment scheme formulation and rehabilitation evaluation of the patient. For example, for patients suffering from knee arthritis, the severity of the knee arthritis can be evaluated by analyzing the angle change range and stress condition of the knee joint in gait data, so that personalized treatment schemes such as physical treatment, drug treatment or operation treatment can be formulated, for postoperative rehabilitation patients, the rehabilitation effect can be intuitively known by comparing the gait data before and after the operation, the rehabilitation training plan can be timely adjusted, and the patients can be promoted to recover faster and better.

The technical effects of this embodiment are as follows:

Accurate personalized gait analysis

Because personalized bone conduction board 1 is formed according to patient's bone form 3D prints, can laminate patient's shank skeleton accurately, and site signal transmitter 3 is fixed at the critical position through the hole of placing of accurate design and draw-in groove 2 for the signal that gathers can accurately reflect patient's bone's true motion state. Compared with the traditional universal gait analysis equipment, the device can effectively avoid analysis errors caused by mismatching of the equipment and the body of a patient, and can provide more reliable and accurate diagnosis and treatment basis especially for patients with skeletal deformity or special physiological structures. For example, when gait analysis is performed on a patient suffering from congenital dislocation of the hip joint, the personalized bone conduction plate 1 can be closely attached to the deformed hip joint part of the patient, and the site signal transmitter 3 can accurately capture the abnormal movement track of the hip joint, so that key data support is provided for doctors to formulate a targeted operation or rehabilitation scheme.

Stable and reliable signal transmission and acquisition

The signal transmitting module 302 of the site signal transmitter 3 adopts an advanced Bluetooth signal transmitting chip, has stable transmitting power and stronger penetrability and anti-interference performance, and can effectively propagate in a complex human tissue environment. Meanwhile, the high-sensitivity Bluetooth signal receiving antenna 402 and the high-performance signal processing chip 403 of the signal receiving 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 if the patient moves rapidly and other electronic equipment interference exists around, the signal can be acquired and processed stably, and the accuracy and the effectiveness of gait analysis results are ensured. For example, in a ward or a rehabilitation treatment area of a hospital, electromagnetic interference generated by various medical equipment may exist around, but the signal transmission system of the device can effectively resist the interference and stably acquire and process gait data.

Good wearing comfort and adaptability

The adaptable walking ball 104 design of the personalized bone conduction plate 1 significantly improves the wearing experience of the patient. In the leg movement process of a patient, the adaptive walking ball 104 can effectively reduce the friction resistance between the personalized bone guide plate 1 and leg tissues and bones, so that the personalized bone guide plate 1 can better conform to the movement change of the legs, and discomfort or damage to the patient caused by overlarge local pressure is avoided. The elastic locking piece 103 ensures firm installation of the site signal transmitter 3, the design of the fixed elastic band 107 and the sticking magic tape 108 is convenient for a patient to wear and can automatically adjust tightness according to expansion and contraction of leg muscles, the overall design gives attention to wearing comfort and use convenience of the patient, long-time gait monitoring and data acquisition are facilitated, compliance of the patient to equipment is improved, and a guarantee is provided for comprehensively and accurately acquiring gait data of the patient. For example, the personalized bone conduction plate 1 can be kept stable all the time and does not cause excessive discomfort to the patient when the patient performs walking training for a long time or daily activity monitoring, and the continuity and effectiveness of data acquisition are ensured.

In this embodiment, when the leg is bent, the personalized bone guide does not obstruct normal leg bending and walking mainly has the following reasons:

The adaptive walking ball is arranged on the personalized skeleton guide plate, so that the friction resistance between the personalized skeleton guide plate and the skeletons and surrounding tissues of the legs can be effectively reduced in the bending process of the legs. When the legs are bent, the movement trend of bones can lead the guide plate to generate relative displacement with tissues, and the balls can roll freely in the ball fixing grooves, so that the original sliding friction is converted into rolling friction, thereby leading the personalized bone guide plate to better conform to the movement change of the legs, avoiding discomfort or damage to patients caused by overlarge local pressure or overlarge friction force, and reducing the obstruction to the bending action of the legs.

The elastic fixing structure has the advantages that the site signal transmitter is fixed in the signal transmitter clamping groove through the elastic locking piece, and the elastic fixing mode allows a certain degree of tiny displacement and buffering. When the legs are bent, slight pulling or extrusion caused by the change of the bone morphology can not be blocked due to direct transmission caused by the rigidity of the fixing structure, the elastic locking piece can be adjusted in a certain range in a self-adaptive manner, the relative stability of the site signal transmitter is maintained, and meanwhile, additional constraint resistance is not added to the bending of the legs.

The personalized fitting characteristics are that the personalized bone guide plate is manufactured according to the 3D printing of the bone morphology of a patient, and is highly fitted with the bone of the leg in the initial state, although the bone position relationship changes relative to the personalized bone guide plate which is initially printed when the leg is bent. Even if relative displacement occurs in the bending process, the fitting degree can still be within an acceptable range, and the design shape and the fixed position of the integral guide plate comprehensively consider the leg movement range and the physiological structure, and cannot be seriously hindered by slight non-fitting. For example, in the design of knee joints, ankle joints and the like, a certain space and activity allowance are reserved to adapt to morphological changes in bending actions.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.

Claims (8)

1. A gait analysis signal acquisition system based on a personalized bone guide, characterized in that it includes a personalized bone guide, the personalized bone guide is provided with a walking-adaptive ball, a signal transmitter slot is fixedly provided on the outer side of the personalized bone guide, 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. 2. A gait analysis signal acquisition system based on a personalized bone guide according to claim 1, characterized in that: the personalized bone guide comprises a bone guide body made by 3D printing according to the patient's bone morphology, a site signal transmitter placement hole is provided on the bone guide body, the signal transmitter card slot is communicated 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 site signal transmitter, the site signal transmitter placement hole and the signal transmitter slot are matched in size, 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 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 site 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 supply through a line, and a buffer layer is fixedly arranged on 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 transmission module adopts a Bluetooth signal transmission chip. 6. A gait analysis signal acquisition system based on a personalized bone guide according to claim 1, characterized in that: the signal receiving and processing display includes a central display processing box and a high-sensitivity Bluetooth signal receiving antenna connected to the central display processing box through a line and distributed in an array, and the central display processing box includes 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. A gait analysis signal acquisition system based on a personalized bone guide according to claim 2, characterized in that: a mark for indicating assembly is fixedly provided on the outer side of the personalized bone guide.