Quantitative anti-resistance knee-stretching patella axial X-ray radiography auxiliary device

Abstract

The utility model relates to the technical field of medical instruments, in particular to a quantitative anti-stretching knee patella axial position X-ray radiography auxiliary device which comprises a chair frame, a bending and stretching frame, a telescopic piece and a pressure sensor. The pressure sensor is arranged on the flexion and extension frame, and the pressure sensor is pushed when the patient straightens the shank. By arranging a pressure sensor, the acting force applied to the flexion and extension frame by the patient in different knee extension resistance states can be detected and recorded in real time. The flexion and extension frame comprises a hinged end and a fixed end, and the hinged end is hinged to the chair frame; the flexion and extension frame is adjusted to a preset angle through stretching of the telescopic piece; the angle between the flexion and extension frame and the vertical direction can be conveniently changed through the adjustment of the telescopic piece, so that the patella of a patient can be subjected to X-ray radiography at different angles. The multi-angle knee joint quantitative anti-resistance shooting is helpful for doctors to more comprehensively understand the motion trails and forms of the patella in different resistance states, and the accuracy and comprehensiveness of clinical diagnosis are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a quantitative resistance-resistance knee extension patella axial X-ray radiographing auxiliary device. Background Art

[0002] Abnormal patellofemoral tracking can cause a variety of knee diseases, such as patellar softening, patellar instability (subluxation or dislocation), and patellofemoral arthritis. By testing patellofemoral tracking, the matching state of the patella and femoral trochlea during knee flexion and extension can be observed, thus assisting doctors in diagnosing and treating these diseases.

[0003] Currently, axial X-ray of the patellar knee joint is an important means of evaluating patellofemoral trajectory in sports medicine.

[0004] However, existing axial patellar X-ray equipment can only assist in imaging the knee in a passively relaxed state. This method only reflects the patellofemoral trajectory of the patient in a relaxed state, not the true patellofemoral trajectory during movement. This limitation of current imaging equipment hinders doctors' ability to accurately assess and judge the patellofemoral trajectory during true movement. Utility Model Content

[0005] In view of this, the purpose of the present invention is to overcome the deficiencies in the prior art and to provide a quantitative resistance-resistance knee extension patella axial X-ray radiographing auxiliary device.

[0006] The utility model provides the following technical solutions:

[0007] An embodiment of the present application provides a quantitative resisted extension knee patella axial X-ray radiography auxiliary device, comprising a chair frame, a flexion and extension frame, a telescopic member, and a pressure sensor. The flexion and extension frame comprises a hinged end and a fixed end, the hinged end being hingedly connected to the chair frame, and the fixed end being connected to the patient's calf. The patient flexes and extends the calf, driving the flexion and extension frame to rotate back and forth on the chair frame; one end of the telescopic member is hingedly mounted on the chair frame or on the ground, and the other end of the telescopic member is hingedly mounted on the flexion and extension frame. The flexion and extension frame is adjusted to a preset angle by the extension and retraction of the telescopic member; the pressure sensor is arranged on the flexion and extension frame, and pushes against the pressure sensor when the patient straightens the calf. The pressure sensor is used to detect the force applied by the patient when straightening the calf.

[0008] In one embodiment, the quantitative resistance-extension knee patella axial X-ray radiography auxiliary device further includes a damping member, one end of which is connected to the telescopic member, and the other end of which is connected to the flexion and extension frame.

[0009] In one embodiment, a U-shaped shell is fixedly provided on the fixed end, the opening of the U-shaped shell is facing the bending direction of the patient's calf, and the pressure sensor is provided on the inner wall of the U-shaped shell. When the patient's calf is straightened, the pressure sensor abuts against the inner wall of the U-shaped shell.

[0010] In one embodiment, a first strap is detachably provided on the fixed end, and the first strap is arranged opposite to the U-shaped shell. When the patient flexes his knee, his calf abuts against the first strap, so that the flexion and extension frame is driven to rotate through the first strap.

[0011] In one embodiment, the quantitative resistance-resistance knee extension patella axial X-ray radiography auxiliary device also includes an interactive component, and the interactive component includes a controller, the controller is electrically connected to the pressure sensor, the pressure sensor converts the detection result into an electrical signal and sends it to the controller, the controller is electrically connected to the telescopic part, and the controller controls the telescopic amount of the telescopic part according to the detection result of the pressure sensor.

[0012] In one embodiment, the interactive component further includes a feedback unit, which is electrically connected to the controller, and the controller feeds back the detection results of the pressure sensor to the outside world through the feedback unit; and / or, the interactive component further includes an input unit, which is electrically connected to the controller, and the controller can be controlled by the input unit, and the telescopic amount of the telescopic member can be adjusted by the controller.

[0013] In one embodiment, the chair frame includes a hip support and a back support, wherein the hip support provides support for the patient's buttocks and the back support provides support for the patient's back, and the hip support is hingedly connected to the back support so that the back support can adjust its relative angle with respect to the hip support.

[0014] In one embodiment, there is an angle between the plane where the hip support member is located and the horizontal plane.

[0015] In one embodiment, two flexion and extension frames are provided.

[0016] In one embodiment, a connecting rod is fixedly connected between the two flexion and extension frames, and the two flexion and extension frames are transmission-connected via the connecting rod.

[0017] The embodiments of the present utility model have the following advantages:

[0018] By adjusting the telescopic parts, the angle of the flexion and extension frame with respect to the vertical direction can be easily changed, thereby allowing X-rays of the patient's patella to be taken at different angles. This multi-angle shooting capability helps doctors to have a more comprehensive understanding of the movement trajectory and morphology of the patella in different states, thereby improving the accuracy and comprehensiveness of diagnosis. By setting up a pressure sensor, the force applied by the patient to the flexion and extension frame under different load and knee extension resistance states can be detected and recorded in real time. This enables the device to simulate the load conditions that patients may encounter in daily life, thereby obtaining more realistic patellar movement images, which helps to evaluate the stability and functionality of the patella under different resistance states.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 A schematic structural diagram showing one perspective of one embodiment of a quantitative resistance-resistance knee extension patellar axial X-ray radiographing auxiliary device provided in an embodiment of the present application is shown;

[0022] Figure 2 A schematic structural diagram showing two viewing angles of one embodiment of a quantitative resistance-resistance knee extension patellar axial X-ray radiographing auxiliary device provided in an embodiment of the present application is shown;

[0023] Figure 3 A schematic structural diagram showing a portion of the structure of an embodiment of a quantitative resistance-resistance knee extension patellar axial X-ray radiographing auxiliary device provided in an embodiment of the present application from three perspectives;

[0024] Figure 4 A schematic structural diagram of four viewing angles of one embodiment of a quantitative resistance-resistance knee extension patellar axial X-ray radiography auxiliary device provided in an embodiment of the present application is shown.

[0025] Description of main component symbols:

[0026] 100-chair frame; 110-hip support; 120-back support; 130-second strap;

[0027] 200 - flexion and extension frame; 210 - hinged end; 220 - fixed end; 230 - U-shaped housing; 240 - first strap; 250 - pressure sensor; 260 - connecting rod;

[0028] 300- telescopic parts;

[0029] 400-Feedback unit; 450-Input unit. DETAILED DESCRIPTION

[0030] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0031] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. Conversely, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0032] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in the template description herein are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] like Figure 1 and Figure 2 As shown, an embodiment of the present application provides a quantitative resistance-resistance knee extension patella axial X-ray radiography auxiliary device, including a chair frame 100, a flexion and extension frame 200, a telescopic member 300 and a pressure sensor 250.

[0036] For example, the chair frame 100 is fixed to the ground by welding, bolting, clamping, etc. In other embodiments, universal wheels are provided on the chair frame 100. In other embodiments, the universal wheels can be locked and unlocked.

[0037] The flexion and extension frame 200 includes a hinged end 210 and a fixed end 220. The hinged end 210 is hingedly connected to the chair frame 100; the fixed end 220 is connected to the patient's calf. The patient flexes and extends his calf, driving the flexion and extension frame 200 to rotate back and forth on the chair frame 100.

[0038] Exemplarily, the flexion and extension frame 200 can rotate on the chair frame 100 in a first rotation direction or a second rotation direction, the first rotation direction being opposite to the second rotation direction. During use, the patient sits on the chair frame 100, the flexion and extension frame 200 is located at the patient's calf, and the patient's calf is connected to the flexion and extension frame 200. When the patient straightens his calf, the patient's calf drives the flexion and extension frame 200 to rotate along the first rotation direction. When the patient flexes his calf, the patient's calf drives the flexion and extension frame 200 to rotate along the second rotation direction.

[0039] One end of the telescopic member 300 is hingedly mounted on the chair frame 100 or on the ground, and the other end of the telescopic member 300 is hingedly mounted on the flexion and extension frame 200. The flexion and extension frame 200 is adjusted to a preset angle by the telescopic member 300. During use, after the flexion and extension frame 200 is adjusted to a preset angle by the telescopic member 300, the patient's patella is photographed by an X-ray camera.

[0040] Illustratively, the preset angle is one or more discrete values, for example, the preset angle is 15°, 20°, 25°, or 30°, etc. In other embodiments, the preset angle is a range of values, for example, the preset angle is 15° to 25°, or the preset angle is 25° to 40°, etc. Illustratively, after the telescopic member 300 adjusts the flexion and extension frame 200 to the preset angle, the flexion and extension frame 200 can be maintained at the preset angle.

[0041] Exemplarily, the telescopic member 300 includes but is not limited to one of the following: a hydraulic rod, an electric push rod, or a threaded screw mechanism (the thread is not self-locking), etc.

[0042] For example, when the patient's calf flexes and extends, it can also drive the flexion and extension frame 200 to rotate and the telescopic member 300 to extend and retract, so as to realize the flexion and extension of the patient's calf with load. Therefore, the quantitative resistance-extension knee patellar axial X-ray radiography auxiliary device provided in the embodiment of the present application can not only realize the multi-angle flexion and extension radiography of the patient when the patella is in a relaxed state (the flexion and extension frame 200 is supported by the telescopic member 300, and the flexion and extension frame 200 supports the patient's calf to realize the relaxed and unloaded state of the patient's calf), but also can realize the multi-angle flexion and extension radiography of the patient when the patella is in a loaded state.

[0043] Pressure sensor 250 is mounted on flexion and extension frame 200. When a patient straightens their calf, it pushes against pressure sensor 250. Pressure sensor 250 is used to detect the force applied to flexion and extension frame 200 by the patient. For example, pressure sensor 250 can be used to record the patellar trajectory under varying loads and resistances to knee extension.

[0044] For example, one flexion and extension frame 200 can be provided so that both legs of the patient can be tested simultaneously, one telescopic member 300 can be provided as a matching device, and two pressure sensors 250 are provided for each leg. In other embodiments, two flexion and extension frames 200 are provided, each corresponding to both legs of the patient, and each flexion and extension frame 200 is equipped with a telescopic member 300 and a pressure sensor 250.

[0045] For example, the process of radiographing the patella with the patient in a relaxed state is as follows: the patient sits on the chair frame 100, the flexion and extension frame 200 is positioned at the patient's calf, the patient's calf is connected to the flexion and extension frame 200, and the patient's calf is relaxed. The flexion and extension frame 200 is adjusted by adjusting the extension and contraction of the telescopic member 300 to adjust the rotation angle, so that the flexion and extension frame 200 is maintained at 30° from the vertical direction, thereby maintaining the patient's calf at 30° from the vertical direction. The patella is then radiographed using an X-ray to obtain an image of the patella with the calf flexed and extended at 30° and in a relaxed state. Then, the flexion and extension frame 200 is adjusted by adjusting the extension and contraction of the telescopic member 300 to adjust the rotation angle, so that the angle of the flexion and extension frame 200 is maintained at 45° from the vertical direction. The patella is then radiographed using an X-ray to obtain an image of the patella with the calf flexed and extended at 45° and in a relaxed state. Of course, the flexion and extension frame 200 can also be adjusted to other angles, such as 35° or 50°. The number of radiographs can also be three or four times, etc.

[0046] For example, the process of radiographing the patella under a patient's loaded knee extension resistance state is as follows: the patient sits on the chair frame 100, the flexion and extension frame 200 is located at the patient's calf, and the patient's calf is connected to the flexion and extension frame 200. The telescopic member 300 is adjusted to maintain the flexion and extension frame 200 at 30° relative to the vertical direction. The patient's calf is extended, and the pressure sensor 250 detects the magnitude of the force applied by the patient's calf on the pressure sensor 250. The patient maintains a force of 50N (of course, other magnitudes of force may also be used). The patella is then radiographed using an X-ray to obtain an image of the patella in a 30° flexion and extension state that conforms to the 50N state. The patient then adjusts the force applied to the calf to 100N, and the patella is then radiographed using an X-ray to obtain an image of the patella in a 30° flexion and extension state that conforms to the 100N state. The telescopic member 300 is then adjusted to maintain an angle of 50° with the vertical direction of the flexion and extension frame 200. The patient's calf is then extended, and the pressure sensor 250 detects the force applied by the patient's calf on the pressure sensor 250. The patient maintains a force of 50 N. An X-ray of the patella is then taken to obtain an image of the patella at 50° of flexion and extension, consistent with the 50 N state. The patient then adjusts the force applied to the calf to 100 N. An X-ray of the patella is then taken to obtain an image of the patella at 50° of flexion and extension, consistent with the 100 N state.

[0047] The above usage process is only an example to facilitate understanding of the technical solution, and does not mean that the usage of the embodiments of this application is limited to this, nor does it mean that the scope of protection of this application is limited.

[0048] By adjusting the telescopic member 300, the angle of the flexion and extension frame 200 relative to the vertical direction can be easily changed, thereby allowing X-rays of the patient's patella to be taken at different angles. This multi-angle shooting capability helps doctors more comprehensively understand the movement trajectory and morphology of the patella in different states, improving the accuracy and comprehensiveness of diagnosis. By setting up the pressure sensor 250, the force applied by the patient to the flexion and extension frame 200 under different load and knee extension resistance states can be detected and recorded in real time. This enables the device to simulate the load conditions that patients may encounter in daily life, thereby obtaining more realistic patellar movement images, which helps to evaluate the stability and functionality of the patella under different loads.

[0049] In one embodiment, the quantitative resistance-extension knee patella axial X-ray radiography auxiliary device further includes a damping member, one end of which is connected to the telescopic member 300 , and the other end of which is connected to the flexion and extension frame 200 .

[0050] Illustratively, one end of the damping member is fixedly connected to the telescopic member 300 by welding, clamping or bolting, and the other end of the damping member is fixedly connected to the flexion and extension frame 200 by welding, clamping or bolting.

[0051] The damping element significantly reduces vibration during the rotation of the flexion and extension frame 200, thereby preventing excessive vibration amplitude due to resonance and protecting the mechanical structure from damage. During X-ray imaging, a stable mechanical structure is crucial for obtaining high-quality images. The presence of the damping element ensures smoother adjustment of the flexion and extension frame 200, reducing image blur or distortion caused by vibration.

[0052] During active calf flexion and extension, the patient's calf rotates the flexion and extension frame 200, while the telescopic member 300 simultaneously expands and contracts. The damping element provides a specific damping force to the patient's calf, thereby ensuring a stable load on the patient's calf and maintaining knee extension resistance. The damping element reduces uncontrollable variables while maintaining a stable load on the patient's calf. The presence of the damping element makes capturing the patellar trajectory more accurate and reliable. This has significant implications for medical research, disease diagnosis, and the development of treatment plans.

[0053] For example, the damping element is an adjustable damper, and the operator can adjust the damping force as needed. This flexibility allows the device to adapt to different patients, different conditions, and different radiographic requirements, thereby improving the versatility and practicality of the device.

[0054] like Figure 1 and 3 As shown, in one embodiment, a U-shaped shell 230 is fixedly provided on the fixed end 220, and the opening of the U-shaped shell 230 faces the bending direction of the patient's calf. For example, the front outer wall of the patient's calf abuts the inner wall of the U-shaped shell 230. The design of the U-shaped shell 230 allows the patient's calf to be stably placed inside it, effectively preventing the calf from moving or shaking during the radiography process. This stability is crucial to ensuring the accuracy of the radiography angle and helps to improve the image quality. The opening of the U-shaped shell 230 faces the bending direction of the patient's calf, which is ergonomically designed to make the patient's calf more natural and comfortable when placed.

[0055] The pressure sensor 250 is arranged on the inner wall of the U-shaped shell 230, and the pressure sensor 250 on the inner wall of the U-shaped shell 230 is abutted during the straightening process of the patient's calf. The pressure sensor 250 is arranged on the inner wall of the U-shaped shell 230 so that it can directly abut and trigger the sensor when the patient's calf is straightened. This method can accurately measure the force applied by the patient's calf to the sensor in real time, that is, the magnitude of the load knee extension resistance. Through the feedback of the pressure sensor 250, the doctor or operator can quickly understand the load status of the patient's calf and make adjustments as needed to ensure that the radiograph is performed under the preset load knee extension resistance conditions. The patient only needs to place the calf in the U-shaped shell 230 and straighten it naturally to trigger the pressure sensor 250, without the need for complicated operations or adjustments. This simplicity helps to reduce the patient's tension and discomfort.

[0056] Exemplarily, the U-shaped housing 230 is made of a material that is not easily deformed, such as metal, hard plastic, etc.

[0057] like Figure 1 and Figure 2 As shown, in one embodiment, a first strap 240 is detachably provided on the fixed end 220. The first strap 240 is arranged opposite to the U-shaped shell 230. When the patient flexes his knee, his calf abuts against the first strap 240, so that the flexion and extension frame 200 is driven to rotate through the first strap 240.

[0058] The detachable design of the first strap 240 allows the doctor or operator to adjust it to the actual size and shape of the patient's calf, ensuring that the strap fits snugly and comfortably. This personalized adjustment helps improve patient comfort and reduces discomfort caused by an overly tight or loose strap.

[0059] The patient only needs to place the lower leg in the U-shaped housing 230 and fix it with the first strap 240 to easily complete the preparation before the radiographing. This design simplifies the operation process, reduces the workload of the operator, and improves the efficiency of the radiographing.

[0060] The first strap 240 is arranged opposite to the U-shaped housing 230. When the patient bends his knees, his calf will abut against the strap and drive the flexion and extension frame 200 to rotate. This design helps to ensure the accuracy and consistency of the rotation of the flexion and extension frame 200, thereby improving the accuracy of the radiograph.

[0061] For example, one end of the first strap 240 is snap-fitted to the flexion frame 200, and the other end of the first strap 240 is snap-fitted to the U-shaped housing 230. In other embodiments, the first strap 240 is detachably mounted on the fixed end 220 via Velcro.

[0062] Exemplarily, the first strap 240 is made of a flexible material, such as flexible plastic, polyester, chemical fiber or cotton.

[0063] like Figure 1 and Figure 2As shown, in one embodiment, the quantitative resistance extension knee patella axial X-ray radiography auxiliary device also includes an interactive component, which includes a controller. The controller is electrically connected to the pressure sensor 250, and the pressure sensor 250 converts the detection result into an electrical signal and sends it to the controller. The controller is electrically connected to the telescopic member 300. The controller controls the telescopic amount of the telescopic member 300 according to the detection result of the pressure sensor 250, so that the patient always maintains a fixed force on the flexion and extension frame 200. For example, if the patient needs to maintain a force of 100N on the pressure sensor 250 and the flexion and extension frame 200 during the process of straightening the calf, when the pressure sensor 250 detects that the force is greater than 100N, the controller controls the telescopic member 300 to speed up the telescopic speed. If the pressure sensor 250 detects that the force is less than 100N, the controller controls the telescopic member 300 to reduce the telescopic speed.

[0064] For example, the controller is a central processing unit (CPU) or a programmable logic controller (PLC) or an electronic device with logic control functions.

[0065] like Figure 1 As shown, in one embodiment, the interactive component further includes a feedback unit 400, which is electrically connected to the controller. The controller feeds back the detection result of the pressure sensor 250 to the outside world through the feedback unit 400;

[0066] Exemplarily, the feedback unit 400 sends out at least one of the following signals to feed back information to the outside world: a vibration signal, an optical signal, an electrical signal, or a mechanical action signal.

[0067] Exemplarily, the vibration signal is emitted through at least the following means: acoustic vibration (which can be achieved through a speaker, etc.) and / or somatosensory vibration (which can be achieved through a vibration motor, etc.); Exemplarily, the controller is electrically connected to the speaker, and the controller can use the speaker to broadcast the pressure value detected by pressure sensor 250. Exemplarily, the vibration motor is electrically connected to the controller, and the controller can indicate the pressure value detected by pressure sensor 250 by controlling the vibration frequency of the vibration motor.

[0068] Illustratively, the optical signal is emitted by at least one of the following means: a light-emitting element (e.g., an LED, OLED, etc.) or a display screen (e.g., a liquid crystal display, a laser display, etc.). Illustratively, the feedback unit 400 can display the pressure detected by the pressure sensor 250 by arranging the light-emitting elements in a specific pattern and then turning the light-emitting elements on and off. Illustratively, the feedback unit 400 can be electrically connected to a controller via the display screen, and the controller can control the display screen to display the detection results of the pressure sensor 250.

[0069] Exemplarily, the electrical signal is sent through at least the following means: a wireless communication module (e.g., a Bluetooth communication module, a WIFI communication module, etc.) or a wired communication module (e.g., an optical fiber communication module, etc.); Exemplarily, the controller is electrically connected to the wireless communication module, and the controller is electrically connected to a terminal device such as a display screen, a mobile phone, a tablet computer, an electronic wristband, and / or a computer via the wireless communication module to display the detection result of the pressure sensor 250. Exemplarily, the controller is electrically connected to the wired communication module, and the controller is electrically connected to a terminal device such as a display screen, a mobile phone, a tablet computer, an electronic wristband, and / or a computer via the wired communication module to display the detection result of the pressure sensor 250.

[0070] The mechanical action signal can be transmitted by a specific action actuator to perform a preset action. For example, the controller is electrically connected to the motor that drives the action actuator to control the start and stop of the action actuator, thereby allowing the controller to control the motor to control the action actuator to perform the preset action.

[0071] like Figure 1 As shown, in one embodiment, the interactive component further includes an input unit 450 , which is electrically connected to the controller. The controller can be controlled by the input unit 450 , and the extension and retraction amount of the retractable member 300 can be adjusted by the controller.

[0072] Exemplarily, the input unit 450 includes a button mechanism, which is provided with a PCB board. The button mechanism is electrically connected to the controller via the PCB board. The user controls the controller by sending electrical signals to the controller through the button mechanism. The user's operation of the button unit includes pressing and / or rotating, etc. The button unit converts the user's operation into an electrical signal control instruction that the controller can recognize and execute. In other embodiments, the input unit 450 also includes a touch screen, and the user can send control instructions to the controller by touching the touch screen.

[0073] like Figure 1 and Figure 2 As shown, in one embodiment, the chair frame 100 includes a hip support 110 and a back support 120, wherein the hip support 110 provides support for the patient's buttocks, and the back support 120 provides support for the patient's back, and the hip support 110 is hingedly connected to the back support 120 so that the back support 120 can adjust its relative angle relative to the hip support 110.

[0074] Illustratively, the hip support 110 and the back support 120 are hingedly connected via a pin and a pin sleeve. In one embodiment, a bolt is provided along the radial direction of the pin sleeve. The bolt is capable of axial movement during forward rotation. Forward rotation of the bolt tightens the pin within the pin sleeve, locking the hinged connection between the hip support 110 and the back support 120. Reverse rotation of the bolt tightens the pin within the pin sleeve, thereby releasing the locking of the hip support 110 and the back support 120.

[0075] During use, the angle between the patient's back and thigh is adjusted by adjusting the angle of the back support 120, so that X-rays of the patient's patella can be taken at different angles between the patient's back and thigh.

[0076] In one embodiment, an armrest is provided on the hip support 110, and the hinged end 210 of the flexion frame 200 is hingedly connected to the armrest.

[0077] like Figure 2 As shown, in one embodiment, the plane where the hip support 110 is located has an angle with the horizontal plane. For example, the angle between the plane where the hip support 110 is located and the horizontal plane is 5°. In other embodiments, the angle between the plane where the hip support 110 is located and the horizontal plane is 10°. In other embodiments, the angle between the plane where the hip support 110 is located and the horizontal plane is 15°. In other embodiments, the angle between the plane where the hip support 110 is located and the horizontal plane is 20°. Of course, the above are merely examples, and the angle between the plane where the hip support 110 is located and the horizontal plane can also be other angles.

[0078] like Figure 1 、 Figure 2 and Figure 4 As shown, in one embodiment, two flexion and extension frames 200 are provided.

[0079] like Figure 4 As shown, in one embodiment, a connecting rod 260 is fixedly connected between the two flexion and extension frames 200. The two flexion and extension frames 200 are transmission-connected via the connecting rod 260. The two flexion and extension frames 200 rotate synchronously via the provided connecting rod 260.

[0080] The connecting rod 260 not only plays a role in transmission, but also strengthens the connection strength between the two flexion and extension frames 200, making the entire mechanical structure more stable. This stability helps to reduce the risk of deformation and failure of the structure when subjected to external loads or high-speed movement.

[0081] The synchronously rotating flexion and extension frame 200 can better coordinate and complete complex work tasks, improve the working efficiency and precision of the machine. At the same time, due to the rationality and stability of the structural design, it also helps to extend the service life of the machine and reduce maintenance costs.

[0082] like Figure 1 and Figure 4 As shown, in one embodiment, a second strap 130 is detachably provided on the hip support 110 , and the second strap 130 fixes the patient's thigh on the hip support 110 .

[0083] The second strap 130 secures the patient's thigh to the hip support 110, effectively preventing the patient from slipping or falling off during movement or rehabilitation training, thereby enhancing patient stability. This is particularly important for patients who need to maintain a specific posture or perform fine motor training.

[0084] During rehabilitation training, a stable posture is crucial to ensuring effective training. The second strap 130 provides stability, allowing patients to focus more on the training itself without worrying about posture stability. This helps improve training effectiveness and accelerates the patient's recovery process.

[0085] Illustratively, the second strap 130 is snap-fitted onto the hip support 110 .

[0086] Exemplarily, the second strap 130 is made of a flexible material, such as flexible plastic, polyester, chemical fiber or cotton.

[0087] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not limiting, and thus other examples of the exemplary embodiments may have different values.

[0088] 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, it does not need to be further defined or explained in subsequent drawings.

[0089] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the scope of the present invention, all of which fall within the scope of protection of the present invention.

Claims

1. A quantitative resistance extension patella axial X-ray auxiliary device, characterized in that: include: Chair frame (100); A flexion and extension frame (200), the flexion and extension frame (200) comprising a hinged end (210) and a fixed end (220), the hinged end (210) being hingedly connected to the chair frame (100), and the fixed end (220) being connected to the patient's calf, and the patient's flexion and extension of the calf drives the flexion and extension frame (200) to reciprocate on the chair frame (100); a telescopic member (300), one end of the telescopic member (300) being hingedly mounted on the chair frame (100) or on the ground, and the other end of the telescopic member (300) being hingedly mounted on the flexion and extension frame (200), and the flexion and extension frame (200) being adjusted to a preset angle by the telescopic member (300); A pressure sensor (250) is provided on the flexion and extension frame (200), and the pressure sensor (250) is pushed when the patient straightens his calf. The pressure sensor (250) is used to detect the force applied when the patient straightens his calf.

2. The quantitative resistance extension patellar axial X-ray auxiliary device according to claim 1, characterized in that: It also includes a damping member, one end of which is connected to the telescopic member (300), and the other end of which is connected to the flexion and extension frame (200).

3. The quantitative resistance extension patellar axial X-ray auxiliary device according to claim 1, characterized in that: A U-shaped shell (230) is fixedly provided on the fixed end (220), the opening of the U-shaped shell (230) faces the bending direction of the patient's calf, and the pressure sensor (250) is provided on the inner wall of the U-shaped shell (230). When the patient's calf is straightened, the pressure sensor (250) abuts against the inner wall of the U-shaped shell (230).

4. The quantitative resistance extension patellar axial X-ray auxiliary device according to claim 3, characterized in that: A first strap (240) is also detachably provided on the fixed end (220), and the first strap (240) is arranged opposite to the U-shaped shell (230). During the patient's knee flexion, the patient's calf abuts against the first strap (240), so that the flexion and extension frame (200) is driven to rotate via the first strap (240).

5. The quantitative resistance extension patellar axial X-ray auxiliary device according to claim 1, characterized in that: The quantitative resistance-extension knee patella axial X-ray radiography auxiliary device also includes an interactive component, the interactive component includes a controller, the controller is electrically connected to the pressure sensor (250), the pressure sensor (250) converts the detection result into an electrical signal and sends it to the controller, the controller is electrically connected to the telescopic member (300), and the controller controls the telescopic amount of the telescopic member (300) according to the detection result of the pressure sensor (250).

6. The quantitative resistance extension patellar axial X-ray auxiliary device according to claim 5, characterized in that: The interactive component further includes a feedback unit (400), the feedback unit (400) being electrically connected to the controller, and the controller feeding back the detection result of the pressure sensor (250) to the outside world through the feedback unit (400); And / or, the interactive component further comprises an input unit (450), the input unit (450) being electrically connected to the controller, the controller being controllable via the input unit (450), and the telescopic amount of the telescopic member (300) being adjusted via the controller.

7. The quantitative resistance extension patellar axial X-ray auxiliary device according to claim 1, characterized in that: The chair frame (100) includes a hip support (110) and a back support (120), wherein the hip support (110) provides support for the patient's buttocks, and the back support (120) provides support for the patient's back. The hip support (110) and the back support (120) are hingedly connected so that the back support (120) can adjust the relative angle relative to the hip support (110).

8. The quantitative resistance extension patellar axial X-ray auxiliary device according to claim 7, characterized in that: There is an angle between the plane where the hip support member (110) is located and the horizontal plane.

9. The quantitative resistance extension patellar axial X-ray auxiliary device according to any one of claims 1 to 8, characterized in that: Two flexion and extension frames (200) are provided.

10. The quantitative resistance extension patellar axial X-ray auxiliary device according to claim 9, characterized in that: A connecting rod (260) is fixedly connected between the two flexion and extension frames (200), and the two flexion and extension frames (200) are transmission-connected via the connecting rod (260).

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