Osteoarthritis monitoring system based on joint sound

Abstract

The invention relates to the technical field of rehabilitation medical treatment, in particular to an osteoarthritis monitoring system based on joint sound, which comprises a kneecap body worn by a leg of a patient, a kneecap assembly used for fitting patella is arranged at the joint of the kneecap body, and a control panel used for controlling the kneecap assembly to work is arranged in the kneecap body; the kneecap assembly comprises a baffle plate rotationally matched with a kneecap body; the shielding plate is provided with a plurality of sound capturing modules used for capturing joint sounds, and the two sides of the shielding plate are fixedly connected with sound production mechanisms capable of actively producing sounds. The control panel is used for performing arthritis disease verification based on the joint sound acquired by the sound capturing module and set waveform characteristics; the definition of joint sound detection is improved through collection of the multiple sound capture modules, so that the judgment accuracy of osteoarthritis is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of rehabilitation medicine, and particularly to an osteoarthritis monitoring system based on joint sounds. Background Art

[0002] Osteoarthritis is a chronic joint disease featuring degenerative changes of articular cartilage and secondary osteophyte formation. As the elderly age, the degenerative changes of articular cartilage gradually worsen, leading to symptoms such as joint stiffness, pain, and limited movement. Therefore, the elderly are often the main patient group of osteoarthritis. Secondly, people who engage in heavy physical labor for a long time or overuse certain joints (such as the knee joint, hip joint, etc.) are also prone to develop arthritis. Osteoarthritis can cause symptoms such as joint pain, stiffness, swelling, and limited movement, seriously affecting the quality of life of patients. Therefore, it is crucial to monitor and treat osteoarthritis promptly and effectively.

[0003] Currently, the detection of arthritis mostly uses instruments for measurement, which has high accuracy but high professionalism and is not generally applicable. There are differences in joint sounds between normal and arthritis patients, which can be used as a judgment method to reduce the pain of patients undergoing arthrocentesis or venous blood sampling and achieve the differentiation of osteoarthritis patients.

[0004] However, when differentiating patients based on joint bone sounds, there are many interfering factors in joint bone sounds. These factors not only come from the patient's own factors and physiological factors (such as muscle contraction, air bubbles in the joint capsule, etc.), but also from external noises. At the same time, due to the different constitutions of each patient and the interference caused by surrounding tissue lesions, abnormal noises of joint lesions will be generated, affecting the accuracy of measurement results. Therefore, the present invention provides an osteoarthritis monitoring system based on joint sounds, which can improve the clarity of detected joint sounds to improve the judgment accuracy of osteoarthritis. Summary of the Invention

[0005] To solve the above problems, the present invention provides an osteoarthritis monitoring system based on joint sounds, which is used to improve the clarity of detected joint sounds to improve the judgment accuracy of osteoarthritis.

[0006] To achieve the above object, the technical solution of the present invention is as follows: An osteoarthritis monitoring system based on joint sounds includes a knee brace body for wearing on the patient's leg. A knee brace component for fitting the patella is provided at the junction of the knee brace body. A control panel for controlling the knee brace component to work is provided inside the knee brace body; the knee brace component includes a baffle plate rotatably fitted with the knee brace body; A plurality of sound capture modules for capturing joint sounds are provided on the baffle plate, and sound generating mechanisms for actively generating sounds are fixedly connected to both sides of the baffle plate; The control panel is used to input and store the waveform features corresponding to each osteoarthritis, compare the joint sounds captured by the sound capture module with the set waveform features. If the joint sounds match the waveform features, a warning instruction is sent to the outside world. If the joint sounds do not match the waveform features, the waveform features are filtered using the joint sounds corresponding to the sound - generating mechanism.

[0007] The technical principle of the above - mentioned solution is as follows: First, the device is worn on the patient's leg through the knee brace body, so that the baffle fits the patient's patella. The sound capture module captures the joint sounds generated during the movement of the knee joint, and the control panel compares the waveform features of the joint sounds to determine the arthritis disease corresponding to the abnormal joint sounds. At the same time, verification and exclusion are carried out through the sound - generating mechanism to improve the accuracy of joint sound recognition.

[0008] The above - mentioned solution has the following beneficial effects: 1. In this solution, the sound capture module captures sounds by fitting the patella at the knee joint. Compared with sound transmission through flesh, the sound transmission between bones is faster and more accurate, which is convenient for improving the accuracy of subsequent joint sound recognition.

[0009] 2. In this solution, the sound - generating mechanism of the active sound - generating band generates transmission sounds in different directions to determine the joint deformation or injury conditions around the patella, filter out interference sounds from the joint sounds, and then improve the accuracy of subsequent verification of joint sounds.

[0010] Furthermore, the knee brace body includes a first plate and a second plate. The first plate and the second plate are rotationally matched, and the baffle is located between the first plate and the second plate. It also includes a guiding component. The guiding component includes mounting blocks fixedly connected to both sides of the first plate. There are several rotating blocks between adjacent mounting blocks, and the rotating blocks are all fixedly connected to the second plate. One side of the mounting block is fixedly connected with a motor. The output shaft of the motor is fixedly connected with a gear, and the gear is rotationally matched with the rotating block. A toothed ring is fixedly connected inside the rotating block, and the toothed ring meshes with the gear.

[0011] Beneficial effect: The motor drives the meshing gears to rotate, and the gears push the toothed rings to move, assisting the patient's knee joint to perform uniform flexion and extension, ensuring that the wave bands of the emitted joint sounds are consistent, reducing interference caused by human movement, and then improving the accuracy of subsequent recognition and verification.

[0012] Furthermore, temperature sensors are also provided on both sides of the baffle. The temperature sensors are fixedly connected to the side of the rotating block away from the mounting block. The temperature sensors are used to measure the real - time temperature of the bone joints on both sides of the patella and send the real - time temperature to the control panel. The control panel also includes a recording module for inputting and storing data. The control panel is used to compare the real-time temperature with the set temperature increase value within the set standard movement time. If the real-time temperature is greater than or equal to the temperature increase value, a warning instruction is sent to the recording module; if the real-time temperature is less than the temperature increase value, a normal temperature instruction is sent to the recording module.

[0013] Beneficial effects: Due to the wear of the articular cartilage in patients with osteoarthritis, the joint surface becomes rough, and the friction between joints during movement increases, resulting in a local temperature rise. By measuring the temperature change during the measurement process, it can assist in confirming whether joint lesions have occurred.

[0014] Further, a sliding channel is formed in the first plate. A piston is slidably fitted in the sliding channel. One side of the piston close to the baffle is hinged with a connecting rod, and the end of the connecting rod far from the piston is hinged with the baffle. Both sides of the sliding channel are communicated with branch pipes. A plurality of massage blocks are vertically slidably fitted in the branch pipes. A deformable rubber layer is connected between the massage blocks and the branch pipes. The massage blocks are evenly arranged on the inner wall of the first plate.

[0015] Beneficial effects: During the process of the patient's leg driving the first plate and the second plate to rotate, since the distance between the first plate and the baffle will change, the hinged connecting rod is driven to move. The piston is driven by the connecting rod to slide in the sliding channel, so as to automatically pump gas into the interior to push out the massage blocks to relax the leg muscles, thereby improving the comfort during use.

[0016] Further, a heating groove is formed in the second plate. An electric heating sheet for heating is arranged in the heating groove. The electric heating sheet is electrically connected to the control panel. The heating groove is communicated with an air pipe. One end of the air pipe far from the heating groove penetrates through the baffle, and the end of the air pipe far from the heating groove is communicated with the branch pipe. A one-way valve is communicated in the air pipe, and the one-way valve is located between the air pipe and the branch pipe. A return pipe is also communicated on the side of the sliding channel far from the baffle. One end of the return pipe far from the sliding channel is communicated with the heating groove, and a control valve is communicated with the return pipe. The control valve includes a clamping block and a clamping groove. The clamping block is slidably fitted with the first plate and is communicated with the sliding channel. The clamping groove is communicated with the return pipe. A conversion pipe is communicated between the clamping groove and the branch pipe; and a spring is connected between the clamping block and the sliding channel. When the slider moves to the farthest end from the baffle, the clamping block is located in the clamping groove, and the conversion pipe is closed; when the slider moves to the closest end to the baffle, the conversion pipe is unblocked.

[0017] Beneficial effects: Through the air pressure change brought about by the piston compression process, the return pipe is closed so that the heated gas in the heating groove is maintained inside the branch pipe for hot compress; when the piston moves upward, the spring pulls the clamping block to rebound, so that the conversion pipe connects the return pipe and the branch pipe, and the cold gas in the branch pipe flows back to the heating groove for heating, so as to automatically realize the internal gas circulation.

[0018] Furthermore, the sound-generating mechanism includes a plurality of striking pieces arranged in a ring shape with the rotating block as the center, and the striking pieces are fixedly connected to the mounting block; A matching groove is provided in the mounting block, one end of the knocking piece is located in the matching groove, and a paddle is fixedly connected to the output shaft of the motor, and the paddle is located in the matching groove.

[0019] Beneficial effect: The output shaft of the motor drives the paddle to rotate, so as to make the striking plate vibrate, thereby emitting a corresponding sound to verify the injury condition of the patient's knee joint.

[0020] Further, the waveform characteristics include normal snapping waveform characteristics and abnormal waveform characteristics of osteoarthritis; The control panel is used to compare the joint sound with the normal waveform characteristics of the clicking sound. If the joint sound is consistent with the normal waveform characteristics of the clicking sound, a counting instruction is sent to the recording module; if the joint sound is inconsistent with the normal waveform characteristics of the clicking sound, the joint sound is compared with the abnormal waveform characteristics of osteoarthritis. If the joint sound is consistent with the abnormal waveform characteristics of osteoarthritis, a warning instruction is sent to the recording module. If the joint sound is inconsistent with the waveform characteristics, the waveform characteristics of the joint sound corresponding to the sound-generating mechanism are filtered out; The control panel is also used to compare the number of times the counting instruction of the recording module bounces with the set rated value within the set action duration. If the number of bounces is greater than the rated value, a warning instruction is issued to the recording module; if the number of bounces is less than the rated value, a normal verification instruction is sent to the recording module.

[0021] Beneficial effects: Patients with knee arthritis sometimes hear a "snap" sound when their joints move. This sound may be physiological, and its occasional occurrence is not necessarily a manifestation of disease. However, if the snapping sound occurs frequently or is accompanied by other symptoms, it may be a sign of knee arthritis. By comparing the number of snapping sounds, we can further verify whether the patient's joint sound is abnormal, thereby improving the accuracy of osteoarthritis verification.

[0022] Furthermore, the shielding plate is provided with a plurality of pressure sensors for real-time monitoring of the contact force when the shielding plate contacts the patient's body surface, and the pressure sensors send the contact force to the control panel; The control panel is used to compare the contact force with a set first value. If the contact force is greater than the first value, a normal fitting instruction is sent to the recording module; if the contact force is less than the first value, a pause instruction is sent to the guiding component.

[0023] Beneficial effect: When the patient's legs drive the knee brace to move, due to the different fits of the baffle, the pressure sensor is used to detect the fit of the baffle, thereby improving the clarity and accuracy of obtaining joint sounds, thereby improving the accuracy of subsequent waveform feature comparisons.

[0024] Further, the recording module is further configured to input and store the positions of the respective sound capture modules, and mark the sound capture modules with the positions; The control panel is further configured to obtain the sound noise level corresponding to the joint sound based on the marked sound capture modules, sort and compare the waveform feature complexities of the sound noise levels, and compare the joint sound with the least waveform feature complexity with the set waveform features.

[0025] Beneficial effects: By reducing the noise interference in the process of sound acquisition, further reducing the interference in the subsequent waveform feature comparison process, and further improving the accuracy of the results in the subsequent waveform feature comparison process.

[0026] Further, the control panel is further configured to compare the joint sounds of the patient's two knee joints. If they are consistent, it sends a limb normal instruction to the recording module. If they are inconsistent, it sends a limb abnormal instruction to the recording module. Then, it compares the real-time temperatures of the patient's two knee joints for consistency. If they are consistent, it sends a limb normal update instruction to the recording module; if they are inconsistent, it sends a maintenance instruction to the recording module.

[0027] Beneficial effects: By comparing the joints on both sides, the accuracy of feature recognition is verified to eliminate the interference of joint damage caused by the patient's own physical diseases. At the same time, verification is carried out through temperature to ensure the accuracy of the verification of joint damage of the patient's own diseases.

[0028] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is an axonometric view of an embodiment of the osteoarthritis monitoring system based on joint sound of the present invention; Figure 2 is a front view of an embodiment of the osteoarthritis monitoring system based on joint sound of the present invention; Figure 3 is a side view of an embodiment of the osteoarthritis monitoring system based on joint sound of the present invention; Figure 4 is Figure 3 a schematic cross-sectional view taken along the A-A direction of Figure 5 is a top view of an embodiment of the osteoarthritis monitoring system based on joint sound of the present invention; Figure 6 is Figure 5 a schematic cross-sectional view taken along the B-B direction of Figure 7 is Figure 5 an enlarged schematic view of the partial B of Figure 8 isFigure 6 Schematic diagram of the connection between the middle gear and the gear ring; Figure 9 For Figure 6 Schematic diagram of the mating groove.

[0030] Reference numerals in the drawings of the specification include: 1, knee pad body; 11, first plate; 12, second plate; 13, fixing strap; 2, baffle plate; 21, pressure sensor; 22, sound capture module; 3, connecting rod; 31, piston; 32, branch pipe; 33, massage block; 34, control valve; 341, spring; 342, clamping block; 343, conversion pipe; 344, card slot; 4, mounting block; 41, motor; 42, rotating block; 43, gear; 44, gear ring; 45, paddle; 46, mating groove; 47, percussion piece; 5, air pipe; 51, heating groove; 52, electric heating sheet; 53, return pipe; 54, one-way valve; 6, temperature sensor. Detailed implementation manners

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0034] The following will be further described in detail through specific implementation manners: Embodiment 1:

[0035] As shown in the attached Figures 1 to 9As shown: An osteoarthritis monitoring system based on joint sounds, including a knee guard body 1 for wearing on a patient's leg. The knee guard body 1 includes a first plate 11 and a second plate 12, and the first plate 11 and the second plate 12 are rotatably fitted; fixing straps 13 are fixedly connected to both sides of the first plate 11, and a magic tape for bonding and fixing (not shown in the figure) is provided between adjacent fixing straps 13; a knee guard assembly for fitting the patella is provided at the junction of the knee guard body 1, and a control panel (not shown in the figure) for controlling the knee guard assembly to work is provided inside the knee guard body 1.

[0036] The knee guard assembly includes a shielding plate 2 rotatably fitted with the knee guard body 1, and the shielding plate 2 is located between the first plate 11 and the second plate 12; it also includes a guiding assembly. The guiding assembly includes mounting blocks 4 welded to both sides of the first plate 11, and several rotating blocks 42 are provided between adjacent mounting blocks 4, and the rotating blocks 42 are all fixedly connected to the second plate 12; a motor 41 is bolted to one side of the mounting block 4, a gear 43 is clamped on the output shaft of the motor 41, and the gear 43 is rotatably fitted with the rotating block 42; a toothed ring 44 is integrally formed inside the rotating block 42, and the toothed ring 44 meshes with the gear 43. In another embodiment, for the convenience of the patient's daily activities, the rotating block 42 is detachably connected to the mounting block 4, and the rotating block 42 is slidably fitted with the second plate 12. When the rotating block 42 completely extends out, the rotating 42 is rotatably fitted with the mounting block 4, and an annular magnet layer is fixedly connected between adjacent rotating blocks 42 and mounting blocks 4. Through the adsorption force of the annular magnet layer, the stability of the rotation of the rotating block 42 and the mounting block 4 is ensured, so as to facilitate the wearing requirement during daily installation and use.

[0037] Several sound capture modules 22 for capturing joint sounds are provided on the shielding plate 2, and temperature sensors 6 are also provided on both sides of the shielding plate 2. The temperature sensors 6 are bonded to the side of the rotating block 42 away from the mounting block 4, and the temperature sensors 6 are used to measure the real-time temperature of the bone joints on both sides of the patella and send the real-time temperature to the control panel.

[0038] The control panel also includes a recording module for inputting and storing data; the control panel is used to compare the real-time temperature with the set temperature rise value within the set standard exercise time. If the real-time temperature is greater than or equal to the temperature rise value, a warning instruction is sent to the recording module; if the real-time temperature is less than the temperature rise value, a normal temperature instruction is sent to the recording module.

[0039] For example, due to the wear of articular cartilage and roughness of articular surfaces in patients with osteoarthritis, the friction between joints increases during exercise, leading to a rise in local temperature. Compared with normal people, the patient's body temperature rises faster. At the same time, after osteoarthritis patients finish exercising, there is inflammation near the bones and joints, which may cause the muscles and ligaments around the joints to heat up due to inflammatory reactions such as congestion and edema, further aggravating the temperature rise of the joints. By measuring the temperature changes during the measurement process, it can assist in confirming whether joint lesions have occurred.

[0040] Active sound-generating sound-generating mechanisms are fixedly connected to both sides of the baffle plate 2; the sound-generating mechanism includes a plurality of knocking plates 47 arranged in a ring shape with the rotating block 42 as the center, and the knocking plates 47 are fixedly connected to the mounting block 4; a matching groove 46 is opened in the mounting block 4, and one end of the knocking plate 47 is located in the matching groove 46; a paddle 45 is fixedly connected to the output shaft of the motor 41, and the paddle 45 is located in the matching groove 46.

[0041] The control panel is used to input and store waveform features corresponding to various osteoarthritis, including normal clicking waveform features and abnormal osteoarthritis waveform features; the control panel is used to compare the joint sound with the normal clicking waveform features, and if the joint sound is consistent with the normal clicking waveform features, a counting instruction is sent to the recording module; if the joint sound is inconsistent with the normal clicking waveform features, the joint sound is compared with the abnormal waveform features of osteoarthritis, and if the joint sound is consistent with the abnormal waveform features of osteoarthritis, a warning instruction is sent to the recording module, and if the joint sound is inconsistent with the waveform features, the joint sound corresponding to the sound-generating mechanism is used for waveform feature filtering; The control panel is also used to compare the number of times the counting instruction of the recording module bounces with the set rated value within the set action duration. If the number of bounces is greater than the rated value, a warning instruction is issued to the recording module; if the number of bounces is less than the rated value, a normal verification instruction is sent to the recording module.

[0042] For example, patients with knee arthritis sometimes hear a "snap" sound when their joints move. This sound may be physiological, and its occasional occurrence is not necessarily a manifestation of disease. Due to the pathological changes in the cartilage on the joint surface, the surface becomes rough, and the friction sound is produced when the non-smooth surfaces touch each other. Medically described as the "snow gripping feeling", it is like the "crunching" sound made by grabbing a handful of loose snow and squeezing it hard when it snows. Therefore, comparative identification can be performed based on the waveform characteristics of the joint sound.

[0043] In the process of comparing the normal snapping waveform characteristics, if the snapping sound occurs frequently or is accompanied by other symptoms, it may be a sign of knee arthritis. This frequent sound may be caused by the poor trajectory of the patella during movement, resulting in poor patellar groove insertion. By comparing the number of snapping sounds, we can further verify whether the patient's joint sound is abnormal, thereby improving the accuracy of osteoarthritis verification.

[0044] The recording module is also used to input and store the positions of the respective sound capture modules 22, and mark the sound capture modules 22 with the positions; the control panel is also used to obtain the sound noise level corresponding to the joint sound based on the marked sound capture modules 22, and sort and compare the waveform feature complexities of the sound noise levels, and compare the joint sound with the least waveform feature complexity with the set waveform features.

[0045] The control panel also compares the joint sounds of the patient's two knee joints. If they are consistent, it sends a limb normal instruction to the recording module. If they are inconsistent, it sends a limb abnormal instruction to the recording module. Then, it compares the real-time temperatures of the patient's two knee joints for consistency. If they are consistent, it sends a limb normal update instruction to the recording module; if they are inconsistent, it sends a maintenance instruction to the recording module.

[0046] For example, during the comparison process of abnormal waveform features of osteoarthritis, since there may be gases dissolved in the synovial fluid in the joint capsule, when the joint moves, these gases will form bubbles and generate sounds. This kind of sound may be confused with the joint bone sound, resulting in inaccurate detection results. By reducing the noise interference during the sound acquisition process, and further reducing the interference during the subsequent waveform feature comparison process, the accuracy of the results during the subsequent waveform feature comparison process can be improved. At the same time, since some patients may have lesions such as fractures, the continuity of the bone is damaged, making the bone conduction sound weaken or disappear. Although it can be understood through the patient's case, it is not clear about the actual impact of the fracture on the joint sound. By comparing the joints on both sides, the accuracy of feature recognition can be verified to eliminate the interference of joint damage caused by the patient's own physical diseases. At the same time, verification is carried out through temperature to ensure the accuracy of the verification of joint damage caused by the patient's own diseases.

[0047] The specific implementation process is as follows: First, adjust the restraint length of the fixing strap 13 on the first plate 11 through the magic tape on the fixing strap 13, fix the first plate 11 on the calf, and then use the same method to fix the second plate 12 on the thigh, make the shielding plate 2 fit the patella, and make the shielding plate 2 fit tightly with the patella by means of the trachea 5 and adhesive tape.

[0048] During the measurement process, the motor 41 drives the meshing gears 43 to rotate, so as to push the toothed ring 44 to move through the gears 43, to assist the patient's knee joint to perform uniform flexion and extension, to ensure that the wavebands of the emitted joint sounds are consistent, reduce the interference generated by human movement, and further improve the accuracy of subsequent recognition and verification.

[0049] The joint sounds generated during the movement of the knee joint are captured by the sound capture module 22. Compared with the transmission through flesh and blood, the sound transmission between bones is faster and more accurate, improving the clarity of the detected joint sounds, so as to improve the accuracy of subsequent judgment of osteoarthritis. Then, the sound generating mechanism of the active sound belt is used to generate transmission sounds in different directions to determine the joint deformation or injury conditions around the patella, filter out the interference sounds of the joint sounds, and further improve the accuracy of subsequent verification of osteoarthritis judgment.

[0050] Embodiment 2:

[0051] The difference from Embodiment 1 is that a sliding channel is formed in the first plate 11, a piston 31 is slidably fitted in the sliding channel, one side of the piston 31 close to the shielding plate 2 is hinged with a connecting rod 3, and the end of the connecting rod 3 far from the piston 31 is hinged with the shielding plate 2; branch pipes 32 are communicated on both sides of the sliding channel, and a plurality of massage blocks 33 are vertically slidably fitted in the branch pipes 32, a deformable rubber layer is connected between the massage blocks 33 and the branch pipes 32, and the massage blocks 33 are uniformly arranged on the inner wall of the first plate 11.

[0052] The specific implementation process is as follows: During the rotation of the first plate 11 and the second plate 12 driven by the patient's leg, since the distance between the first plate 11 and the shielding plate 2 changes, the hinged connecting rod 3 is driven to move, and the piston 31 is driven by the connecting rod 3 to slide in the sliding channel, so as to automatically pump gas into the interior to push out the massage blocks 33 to relax the leg muscles and improve the comfort during use.

[0053] Embodiment 3:

[0054] The difference from Embodiment 2 is that a heating groove 51 is formed in the second plate 12, an electric heating sheet 52 for heating is arranged in the heating groove 51, the electric heating sheet 52 is electrically connected to the control panel, the heating groove 51 is communicated with an air pipe 5, one end of the air pipe 5 far from the heating groove 51 penetrates through the shielding plate 2, and the end of the air pipe 5 far from the heating groove 51 is communicated with the branch pipe 32. A one-way valve 54 is communicated in the air pipe 5, and the one-way valve 54 is located between the air pipe 5 and the branch pipe 32; A return pipe 53 is also communicated on the side of the sliding channel far from the shielding plate 2, one end of the return pipe 53 far from the sliding channel is communicated with the heating groove 51, and a control valve 34 is communicated with the return pipe 53. The control valve 34 includes a clamping block 342 and a clamping groove 344. The clamping block 342 is slidably fitted with the first plate 11 and is communicated with the sliding channel; the clamping groove 344 is communicated with the return pipe 53, and a conversion pipe 343 is communicated between the clamping groove 344 and the branch pipe 32; and a spring 341 is connected between the clamping block 342 and the sliding channel. When the slider moves to the farthest end from the shielding plate 2, the clamping block 342 is located in the clamping groove 344 and the conversion pipe 343 is closed; when the slider moves to the closest end to the shielding plate 2, the conversion pipe 343 is unblocked.

[0055] The specific implementation process is as follows: During the compression process of the piston 31, the resulting air pressure change pushes the latch 342 to overcome the pulling force of the spring 341 to close the card slot 344, so as to close the return pipe 53 and keep the heating gas in the heating tank 51 inside the branch pipe 32 for hot compress to relieve the soreness of the surrounding muscles; when the piston 31 moves upward, the air pressure in the sliding channel decreases, and the spring 341 pulls the latch 342 to rebound, so that the conversion pipe 343 connects the return pipe 53 and the branch pipe 32, enabling the cold gas formed by the heat exchange between the branch pipe 32 and the outside to flow back into the heating tank 51 for heating, so as to automatically realize the circulation of the internal gas.

[0056] Embodiment 4:

[0057] The difference from Embodiment 3 is that a number of pressure sensors 21 for real-time monitoring of the contact force when the baffle 2 contacts the patient's body surface are provided on the baffle 2, and the pressure sensors 21 send the contact force to the control panel; the control panel is used to compare the contact force with a set first value. If the contact force is greater than the first value, it sends a normal fitting instruction to the recording module; if the contact force is less than the first value, it sends a pause instruction to the guiding component.

[0058] For example, during the movement of the knee brace body 1 driven by the patient's leg, due to different fitting conditions of the baffle 2, the sound capture module 22 on the baffle 2 cannot fit well with the patella, thus affecting the detection effect of the sound capture module 22. Through the detection of the pressure sensor 21, the fitting condition of the baffle 2 is detected, the clarity and accuracy of obtaining joint sounds are improved, and thus the accuracy in the subsequent waveform feature comparison process is improved.

[0059] Obviously, the above embodiments are only examples clearly described and not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. An osteoarthritis monitoring system based on joint sounds, comprising a knee pad body (1) for wearing on a patient's leg, a knee pad component for fitting the patella is provided at the junction of the knee pad body (1), and a control panel for controlling the knee pad component to work is provided inside the knee pad body (1); characterized in that, The knee guard assembly includes a shielding plate (2) rotatably fitted with the knee guard body (1); A number of sound capture modules (22) for capturing joint sounds are provided on the shielding plate (2), and sound generating mechanisms for actively generating sounds are fixedly connected to both sides of the shielding plate (2); The control panel is used to input and store the waveform characteristics corresponding to each osteoarthritis, compare the joint sounds obtained based on the sound capture module (22) with the set abnormal waveform characteristics of osteoarthritis. If the joint sounds match the abnormal waveform characteristics of osteoarthritis, a warning instruction is sent to the outside. If the joint sounds do not match the abnormal waveform characteristics of osteoarthritis, the waveform characteristics are filtered out with the joint sounds corresponding to the sound generating mechanism.

2. The osteoarthritis monitoring system based on joint sounds according to claim 1, characterized in that, The knee guard body (1) includes a first plate (11) and a second plate (12), the first plate (11) and the second plate (12) are rotatably fitted, and the shielding plate (2) is located between the first plate (11) and the second plate (12); It further includes a guiding assembly. The guiding assembly includes mounting blocks (4) fixedly connected to both sides of the first plate (11), and a number of rotating blocks (42) are provided between adjacent mounting blocks (4), and the rotating blocks (42) are all fixedly connected to the second plate (12); A motor (41) is fixedly connected to one side of the mounting block (4), an output shaft of the motor (41) is fixedly connected to a gear (43), and the gear (43) is rotatably fitted with the rotating block (42); a gear ring (44) is fixedly connected inside the rotating block (42), and the gear ring (44) meshes with the gear (43).

3. The osteoarthritis monitoring system based on joint sounds according to claim 2, characterized in that Temperature sensors (6) are further provided on both sides of the shielding plate (2), and the temperature sensors (6) are fixedly connected to the side of the rotating block (42) away from the mounting block (4); the temperature sensors (6) are used to measure the real-time temperature of the bone joints on both sides of the patella and send the real-time temperature to the control panel; The control panel further includes a recording module for inputting and storing data; The control panel is used to compare the real-time temperature with the set temperature rise value within the set standard exercise time. If the real-time temperature is greater than or equal to the temperature rise value, a warning instruction is sent to the recording module; if the real-time temperature is less than the temperature rise value, a temperature normal instruction is sent to the recording module.

4. The osteoarthritis monitoring system based on joint sounds according to claim 3, characterized in that A sliding channel is formed inside the first plate (11), a piston (31) is slidably fitted in the sliding channel, one side of the piston (31) close to the shielding plate (2) is hinged with a connecting rod (3), and one end of the connecting rod (3) away from the piston (31) is hinged with the shielding plate (2); Both sides of the sliding channel communicate with branch pipes (32), a number of massage blocks (33) are vertically slidably fitted in the branch pipes (32), a deformable rubber layer is connected between the massage blocks (33) and the branch pipes (32), and the massage blocks (33) are evenly arranged on the inner wall of the first plate (11).

5. The osteoarthritis monitoring system based on joint sounds according to claim 4, characterized in that, The second plate (12) is internally provided with a heating groove (51). An electric heating sheet (52) for heating is arranged in the heating groove (51). The electric heating sheet (52) is electrically connected to the control panel. The heating groove (51) is communicated with an air pipe (5). One end of the air pipe (5) far away from the heating groove (51) penetrates through the shielding plate (2), and one end of the air pipe (5) far away from the heating groove (51) is communicated with a branch pipe (32). A one-way valve (54) is communicated in the air pipe (5), and the one-way valve (54) is located between the air pipe (5) and the branch pipe (32). One side of the sliding channel far away from the shielding plate (2) is also communicated with a return pipe (53). One end of the return pipe (53) far away from the sliding channel is communicated with the heating groove (51), and a control valve (34) is communicated with the return pipe (53). The control valve (34) includes a clamping block (342) and a clamping groove (344). The clamping block (342) is slidably matched with the first plate (11), and the clamping block (342) is communicated with the sliding channel. The clamping groove (344) is communicated with the return pipe (53), and a conversion pipe (343) is communicated between the clamping groove (344) and the branch pipe (32). A spring (341) is connected between the clamping block (342) and the sliding channel. When the slider moves to the farthest end from the shielding plate (2), the clamping block (342) is located in the clamping groove (344), and the conversion pipe (343) is closed. When the slider moves to the nearest end from the shielding plate (2), the conversion pipe (343) is unblocked.

6. The osteoarthritis monitoring system based on joint sounds according to claim 5, characterized in that, The sound generating mechanism includes a plurality of percussion pieces (47) arranged in a ring with the rotating block (42) as the center. The percussion pieces (47) are fixedly connected to the mounting block (4). A fitting groove (46) is formed in the mounting block (4). One end of the percussion piece (47) is located in the fitting groove (46). A dial (45) is fixedly connected to the output shaft of the motor (41), and the dial (45) is located in the fitting groove (46).

7. The osteoarthritis monitoring system based on joint sounds according to claim 6, wherein The waveform features include normal snapping waveform features and abnormal waveform features of osteoarthritis. The control panel is used to compare the joint sound with the normal snapping waveform features. If the joint sound conforms to the normal snapping waveform features, a counting instruction is sent to the recording module. If the joint sound does not conform to the normal snapping waveform features, the joint sound is compared with the abnormal waveform features of osteoarthritis. If the joint sound conforms to the abnormal waveform features of osteoarthritis, a warning instruction is sent to the recording module. If the joint sound does not conform to the waveform features, the waveform features corresponding to the joint sound of the sound generating mechanism are filtered out. The control panel is also used to compare the number of snapping times of the counting instruction of the recording module with a set rated value within the set action duration. If the number of snapping times is greater than the rated value, a warning instruction is sent to the recording module. If the number of snapping times is less than the rated value, a verification normal instruction is sent to the recording module.

8. The osteoarthritis monitoring system based on joint sounds according to claim 7, characterized in that, A plurality of pressure sensors (21) for real-time monitoring of the contact force when the shielding plate (2) contacts the patient's body surface are arranged on the shielding plate (2). The pressure sensors (21) send the contact force to the control panel. The control panel is used to compare the contact force with a set first value. If the contact force is greater than the first value, a fitting normal instruction is sent to the recording module. If the contact force is less than the first value, a pause instruction is sent to the guiding component.

9. The osteoarthritis monitoring system based on joint sounds according to claim 8, wherein The recording module is further configured to input and store the positions of the respective sound capture modules (22), and mark the sound capture modules (22) with the positions. The control panel is further configured to obtain the sound noise level corresponding to the joint sound based on the marked sound capture modules (22), sort and compare the waveform feature complexities of the sound noise levels, and compare the joint sound with the least waveform feature complexity with the set waveform features.

10. The osteoarthritis monitoring system based on joint sounds according to claim 9, characterized in that, The control panel is also configured to compare the joint sounds of the patient's two knee joints. If they are consistent, it sends a limb normal instruction to the recording module. If they are inconsistent, it sends a limb abnormal instruction to the recording module, and then compares the real-time temperatures of the patient's two knee joints for consistency. If they are consistent, it sends a limb normal update instruction to the recording module; if they are inconsistent, it sends a maintenance instruction to the recording module.

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