Auxiliary device for X-ray photography examination of knee joint

Abstract

The utility model relates to an auxiliary device for X-ray photography examination of knee joints. The auxiliary device comprises a first bearing plate and a second bearing plate, one end of the second bearing plate is hinged to one end of the first bearing plate; the two pairs of supporting rods comprise a pair of first supporting rods and a pair of second supporting rods, the first supporting rods and the second supporting rods are rotatably connected to the hinged position of the first bearing plate and the second bearing plate, a plurality of clamping grooves are formed in the second supporting rods, telescopic adjusting rods are rotatably connected to the bottom of the second bearing plate, and the lower ends of the telescopic adjusting rods are clamped in the clamping grooves; when the telescopic adjusting rods are clamped in the clamping grooves to enable the second bearing plate to be in the vertical position, the thighs are tightly attached to the second bearing plate, the shanks are tightly attached to the first bearing plate, the knee joints are located at the hinged position of the first bearing plate and the second bearing plate, the thighs are perpendicular to the shanks, and a kneeling posture is formed on the first bearing plate and the second bearing plate. And downward pressure is generated on the knee joint through the gravity of the patient, so that X-ray photography of the knee joint posterior stress position is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an auxiliary device for knee joint X-ray photography examination. Background Art

[0002] The knee stress X-ray examination method, as an important means to evaluate the structure and stability of the knee joint, usually requires the patient to lie on his back and maintain the knee joint in a bent state at a specific angle. During this process, the doctor manually applies pressure to further flex the knee joint to generate the necessary stress and displacement, thereby obtaining a stress X-ray. However, this operation method has obvious limitations. First, the doctor's manual operation often leads to inaccurate examination results due to individual differences and uneven force application, and may even require repeated shooting, which increases the burden on patients and the examination time. Secondly, although there are some auxiliary devices on the market, which usually apply pressure mechanically, most of the existing devices are limited to valgus and valgus stress examinations and cannot meet the needs of posterior stress X-ray photography. In addition, these devices are usually designed in a single way and are only suitable for examinations in specific positions, but cannot meet the requirements of multi-position examinations. At the same time, they occupy a large area and are not easy to store and carry, which limits their wide application in clinical practice. Therefore, how to develop an auxiliary device that can locate the bending of the knee joint through the device, perform posterior stress X-ray examination without the assistance of personnel, and at the same time, is suitable for examinations in various body positions and can be portable and stored, is an issue that urgently needs to be solved. Utility Model Content

[0003] In view of the problems existing in the prior art, the purpose of the utility model is to provide an auxiliary device for X-ray examination of the knee joint, comprising a first bearing plate, a second bearing plate and two pairs of support rods, and the angle between the first bearing plate and the second bearing plate can be accurately adjusted by telescopic adjustment rods. When the second bearing plate is in a vertical position, it can ensure that the patient's legs form a right-angle kneeling posture on the first bearing plate and the second bearing plate, and X-ray examination of the posterior stress position of the knee joint can be achieved without additional human assistance.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An auxiliary device for knee joint X-ray examination, comprising: a first horizontally arranged supporting plate; a second supporting plate, one end of which is hinged to one end of the first supporting plate and can be rotated outward from a vertical position to an inclined position; two pairs of support rods, the two pairs of support rods include a pair of first support rods and a pair of second support rods, which are rotatably connected to the hinges of the first supporting plate and the second supporting plate, as supporting legs, the first support rod is located on the outside of the first supporting plate and can be rotated downward relative to the first supporting plate, the first support rod is movably connected to the first supporting plate through a connecting rod to support the first supporting plate in a horizontal position, and the second support rod is located on the outside of the second supporting plate and can be rotated downward relative to the first supporting plate. The second support plate is able to rotate downward relative to the second support plate, wherein a plurality of slots are provided on the second support rod at certain intervals along its length direction, and a telescopic adjustment rod is rotatably connected to the bottom of the second support plate, and the lower end of the telescopic adjustment rod is clamped in the slot. When the second support plate is in a vertical position by clamping the telescopic adjustment rod in the slot, the thigh is tightly against the second support plate, the calf is tightly against the first support plate, and the knee joint is located at the hinge of the first support plate and the second support plate, so that the thigh is perpendicular to the calf and forms a kneeling posture on the first support plate and the second support plate, and the patient's own gravity generates downward pressure on the knee joint to realize X-ray photography of the posterior stress position of the knee joint.

[0006] Furthermore, a pair of first receiving grooves are provided at the other end of the second supporting plate, and L-shaped rods are slidably installed in the first receiving grooves, and the L-shaped rods are extended out of the second supporting plate by pulling them.

[0007] Furthermore, a placement groove for placing the first imaging plate is provided on the first supporting plate, and the L-shaped rod includes a vertical rod and a horizontal rod arranged vertically, and a first strip groove is provided on the vertical rod, and a third supporting plate is detachably installed between two opposite first strip grooves. When the second supporting plate is in an upwardly inclined position by being clamped in the clamping groove through the telescopic adjustment rod, the thigh is tightly attached to the second supporting plate, the knee joint is located on the first imaging plate, and the calf is tightly attached to the first supporting plate, so that X-ray photography of the knee joint tunnel position can be realized.

[0008] Furthermore, the angle formed between the first bearing plate and the second bearing plate is 110-135°.

[0009] Furthermore, the L-shaped rod includes a vertical rod and a horizontal rod which are vertically arranged, and the horizontal rod is provided with a second strip groove. A second imaging plate is detachably installed between two opposite second strip grooves. A certain distance is provided between the bottom of the second imaging plate and the vertical rod to form a passage space allowing the foot to pass through. When the second supporting plate is in a downwardly inclined position by clamping the telescopic adjustment rod in the slot, the thigh is tightly attached to the first supporting plate, the knee joint is located at the hinge of the first supporting plate and the second supporting plate, the calf is tightly attached to the second supporting plate, the foot passes through the passage space and is located on the rear side of the second imaging plate, thereby realizing X-ray photography of the axial position of the patella of the knee joint.

[0010] Furthermore, the angle formed between the first supporting plate and the second supporting plate is 210-270°.

[0011] Furthermore, the telescopic adjustment rod includes a telescopic support rod and a transverse support rod, one end of the telescopic support rod is rotatably connected to the bottom of the second supporting plate, the other end of the telescopic support rod is fixedly connected to the transverse support rod, and the two ends of the transverse support rod are respectively clamped in the clamping grooves, wherein the telescopic support rod is composed of two tubes, one tube can slide in the other tube to adjust the distance between the second supporting plate and the transverse support rod.

[0012] Furthermore, a second receiving groove is provided at the bottom of the second supporting plate, and the second receiving groove cooperates with the telescopic support rod. Two opposite inner sides of the second receiving groove are provided with grooves, and one end of the telescopic support rod is correspondingly provided with two protrusions, which are clamped in the grooves.

[0013] Furthermore, the first bearing plate and the second bearing plate are hinged together through a rotating shaft, a first shaft sleeve is provided at one end of the first bearing plate, and the first shaft sleeve is rotatably connected to the rotating shaft, a second shaft sleeve is provided at one end of the second bearing plate, and the second shaft sleeve is rotatably connected to the rotating shaft, and the first support rod and the second support rod are respectively rotatably connected to the rotating shaft.

[0014] Furthermore, a connecting hole is provided on the first support rod, a sliding groove and a hook groove at one end of the sliding groove are provided on the side of the first supporting plate, one end of the connecting rod is rotatably connected to the connecting hole through a screw rod, and the other end of the connecting rod slides in the sliding groove and can be clamped in the hook groove.

[0015] The utility model has the following advantages:

[0016] 1. The utility model discloses an auxiliary device for X-ray examination of the knee joint, comprising a first bearing plate, a second bearing plate and two pairs of support rods. The angle between the first bearing plate and the second bearing plate can be accurately adjusted by a telescopic adjustment rod. When the second bearing plate is in a vertical position, it can ensure that the patient's legs form a right-angle kneeling posture on the first bearing plate and the second bearing plate, and X-ray examination of the posterior stress position of the knee joint can be achieved without additional human assistance. In addition, according to the needs of the examination, the angle between the first bearing plate and the second bearing plate can be adjusted by a telescopic adjustment rod, so as to adapt to X-ray examinations of the tunnel position and the patellar axis position, and it is highly applicable in multi-position examinations of the knee joint. At the same time, the device is designed with a folding and storage function. The first bearing plate, the second bearing plate and the two pairs of support rods can be folded and stored, which is convenient for storage and transportation, occupies little space, and improves its portability and practicality.

[0017] 2. The telescopic adjustment rod of the utility model includes a telescopic support rod and a transverse support rod. The transverse support rod can be snapped into different slots, thereby providing multiple angles of gear selection to meet the needs of knee joint X-ray examinations in different body positions. In addition, the telescopic support rod adopts a sleeve design, that is, one tube can slide inside another tube, so that the distance between the second bearing plate and the transverse support rod can be flexibly adjusted. This not only allows the second bearing plate to be further fine-tuned on the basis of a fixed gear angle, but also ensures the accuracy of the angle adjustment, improves the success rate of knee joint X-ray examinations, and provides patients with a more accurate and reliable diagnosis basis. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a three-dimensional structural schematic diagram of the auxiliary device for knee joint X-ray photography examination when examining the posterior stress position.

[0019] Figure 2 It is a front view of the auxiliary device for X-ray examination of knee joint of the utility model when examining the posterior stress position.

[0020] Figure 3 The utility model is a three-dimensional structural schematic diagram of the auxiliary device for X-ray photography examination of knee joint when checking the tunnel position.

[0021] Figure 4 It is a main view of the auxiliary device for knee joint X-ray photography inspection of the utility model when inspecting the tunnel position.

[0022] Figure 5 The utility model is a three-dimensional structural schematic diagram of the auxiliary device for knee joint X-ray photography examination when examining the axial position of the patella.

[0023] Figure 6 It is a front view of the auxiliary device for knee joint X-ray photography inspection of the utility model when inspecting the axial position of the patella.

[0024] Figure 7 The utility model is a three-dimensional structural schematic diagram of the auxiliary device for knee joint X-ray photography inspection after being folded.

[0025] Figure 8 It is a three-dimensional structural schematic diagram of the second bearing plate and the telescopic adjustment rod of the utility model.

[0026] Fig. 9 It is a three-dimensional cross-sectional view of the second bearing plate and the L-shaped rod of the utility model.

[0027] Fig.10 It is a three-dimensional structural schematic diagram of the first bearing plate of the utility model.

[0028] Among them, 1 is a first bearing plate, 101 is a placement slot, 102 is a first imaging plate, 103 is a first sleeve, 104 is a slide slot, 105 is a hook slot, 2 is a second bearing plate, 201 is a telescopic adjustment rod, 201a is a telescopic support rod, 201a1 is a protrusion, 201b is a transverse support rod, 202 is a first storage slot, 203 is an L-shaped rod, 203a is a vertical rod, 203a1 is a first strip groove, 203b is a horizontal rod, 203a1 is a first strip groove, 203b is a horizontal rod, 203a2 is a first strip groove, 203b is a horizontal rod, 203a2 is a first strip groove, 203b is a horizontal rod, 203a2 is a first strip groove, 203b is a first strip groove, 203b is a first strip groove, 203a is a first strip groove, 203b ... 03b1 is the second strip groove, 204 is the third supporting plate, 205 is the second imaging plate, 206 is the second receiving groove, 206a is the groove, 207 is the second sleeve, 3 is the first support rod, 301 is the connecting hole, 302 is the connecting rod, 302a is the screw rod, 4 is the second support rod, 401 is the slot, 5 is the rotating shaft, 6 is the lifting base, 7 is the thigh, 8 is the calf, 9 is the knee joint, 10 is the foot, and 11 is the passing space. DETAILED DESCRIPTION

[0029] The following description is essentially only exemplary and is not intended to limit the utility model, its application or use. It will be further understood that the term "include" and / or "comprising" specifies the existence of the features, wholes, steps, operations, elements and / or parts mentioned when used in this specification, but does not exclude the existence of one or more other features, wholes, steps, operations, elements, parts and / or its groups or add one or more other features, wholes, steps, operations, elements, parts and / or its groups. As used in this article, the term "and / or" includes any and all combinations of one or more of the associated listed items. It will be understood that when an element, component and / or part is referred to as "connected to another element, component and / or part", it can be directly connected to another element, component and / or part, or there can be an intermediate element. It will be understood that although the terms "first", "second" and the like can be used to describe various elements, components and / or parts in this article, these elements, components and / or parts should not be limited by these terms. These terms are only used to distinguish an element, component or part from another element, component or part. Therefore, the first element, component or part discussed below can be referred to as the second element, component or part without departing from the teaching of the utility model. Unless otherwise defined, all terms (including technical terms and scientific terms) used in this article have the same meanings as those commonly understood by those of ordinary skill in the field to which the utility model belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having meanings consistent with their meanings in the relevant field and / or the context of this specification, and will not be interpreted in an idealized or overly formal sense, unless explicitly defined as such herein.

[0030] It should be understood that, in order to clearly show the contents therein, the drawings herein are not drawn to scale, and the same or similar reference numerals indicate the same or similar components or parts. In addition, it should be understood that any embodiments described in this application and the technical features included therein can be combined with each other.

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] like Figure 1 , 2 As shown in Figures 8 and 9, an auxiliary device for X-ray examination of the knee joint comprises: a first horizontally arranged supporting plate; a second supporting plate, one end of which is hinged to one end of the first supporting plate and can be rotated outward from a vertical position to an inclined position, that is, the angle α formed between the first supporting plate and the second supporting plate is 90°; two pairs of struts, the two pairs of struts include a pair of first struts and a pair of second struts, which are rotatably connected to the hinges of the first supporting plate and the second supporting plate, and serve as supporting legs to provide stable support for the device, ensuring that the patient can maintain a stable posture during the photography process. The first support rod is located on the outside of the first support plate and can rotate downward relative to it. The first support rod is movably connected to the first support plate through a connecting rod to support the first support plate in a horizontal position. The second support rod is located on the outside of the second support plate and can rotate downward relative to it. A plurality of slots are provided on the second support rod at certain intervals along its length direction. The bottom of the second support plate is rotatably connected with a telescopic adjustment rod, and the lower end of the telescopic adjustment rod is clamped in the slot. Through the cooperation of the telescopic adjustment rod and the slot, the angle of the second support plate can be adjusted to adapt to the body shape and photography needs of different patients. When the second support plate is in a vertical position by clamping the telescopic adjustment rod in the slot, the thigh is close to the second support plate, the calf is close to the first support plate, and the knee joint is located at the hinge of the first support plate and the second support plate, so that the thigh is perpendicular to the calf and forms a kneeling posture on the first support plate and the second support plate, and the patient's own gravity generates downward pressure on the knee joint, without the need for additional fixing devices or manual operation, so as to realize X-ray photography of the posterior stress position of the knee joint. By precisely adjusting the angle of the second bearing plate and the posture of the patient, it can be ensured that the knee joint is in the best photographic position, thereby improving the success rate and accuracy of X-ray examination.

[0033] Among them, the X-ray photography equipment is located on one side of the first bearing plate, and the corresponding imaging plate (not shown in the figure) is located on the other side of the first bearing plate, and the knee joint is located between the X-ray photography equipment and the imaging plate. Usually, the patient places one foot on the first bearing plate and the second bearing plate in a kneeling posture, with the thigh perpendicular to the calf and the other foot upright on the ground. During the examination, the patient's other foot leaves the ground and presses down on one of the feet to force the tibia to press down on the knee joint to achieve the effect of simulating the posterior drawer test, and then the X-ray photography of the posterior stress position of the knee joint is realized through the cooperation of the X-ray photography equipment and the imaging plate. In an embodiment not shown, card slots for clamping the imaging plate are provided on both sides of the first bearing plate, and the card slots correspond to the position of the knee joint. When checking, it is only necessary to insert the imaging plate into the card slot on one side to perform X-ray photography, without the need for other external imaging plate moving devices.

[0034] In an embodiment not shown, in order to make the patient's thigh and calf fit tightly and be positioned on the first support plate and the second support plate, a plurality of straps may be provided on the first support plate and the second support plate. The straps are used to tighten the thigh and calf to the first support plate and the second support plate to ensure that the thigh is perpendicular to the calf, thereby improving the success rate of posterior stress position X-ray photography of the knee joint.

[0035] like Figure 1 , 8 As shown in Figure 9, a pair of first receiving grooves are provided at the other end of the second bearing plate, and an L-shaped rod is slidably installed in the first receiving groove, and the L-shaped rod is pulled to extend out of the second bearing plate. Among them, the pair of first receiving grooves are mirror-imaged, and the L-shaped rod includes a vertical rod and a horizontal rod arranged vertically, and the overall structure is L-shaped. The first receiving groove is also configured to form an L-shaped channel matching the L-shaped rod, and the L-shaped channel includes a horizontal channel and a vertical channel, wherein the vertical channel is used to vertically insert the vertical rod, and the horizontal channel is used to horizontally receive the horizontal rod. A certain gap is left between the horizontal rod and the horizontal channel to facilitate the operator to pull out the L-shaped rod. When the L-shaped rod is fully inserted into the L-shaped channel, the upper surface of the horizontal rod remains flush with the surface of the first receiving groove, and the L-shaped rod is stored. When it is needed, just pull the horizontal rod to drive the vertical rod to slide outward together, so that the L-shaped rod is pulled out of the receiving groove. When performing X-ray photography of the posterior stress position of the knee joint, the pulled out L-shaped rod can be used as an armrest to help the patient maintain a more stable kneeling posture. The positioning method of the L-shaped rod in different positions can be configured with an adjustable locking device, which includes a compression spring and a positioning rod. The compression spring is fixed to the bottom end of the vertical rod, and the vertical rod can slide freely in the first receiving groove through its elastic force. A plurality of positioning holes are arranged at intervals on the vertical rod, and a corresponding plug hole is arranged at the bottom of the second bearing plate. The operator can connect the plug hole with different positioning holes through the positioning rod according to the patient's needs, thereby adjusting the position of the L-shaped rod in the first receiving groove and realizing the precise adjustment of the extension length of the L-shaped rod.

[0036] like Figure 1-6 As shown in Figure 8, the telescopic adjustment rod includes a telescopic support rod and a transverse support rod, one end of the telescopic support rod is rotatably connected to the bottom of the second bearing plate, the other end of the telescopic support rod is fixedly connected to the transverse support rod, and the two ends of the transverse support rod are respectively clamped in the slot, wherein the telescopic support rod is composed of two tubes, and one tube can slide in the other tube to adjust the distance between the second bearing plate and the transverse support rod. The telescopic support rod and the transverse support rod are in an inverted T-shaped structure, and the position of the transverse support rod in the slot can be changed by rotating the other end of the telescopic support rod, so as to flexibly adjust the angle of the second bearing plate relative to the first bearing plate. Each slot corresponds to a specific angle, which meets the needs of adjusting different angles. If the angle provided by the slot cannot meet the inspection requirements, the angle of the second bearing plate can be further adjusted by fine-tuning the telescopic support rod to ensure that the precise angle required for the inspection is achieved.

[0037] like Figure 8 As shown, the second receiving groove is provided at the bottom of the second bearing plate, and the second receiving groove cooperates with the telescopic support rod. The two opposite inner sides of the second receiving groove are provided with grooves, and one end of the telescopic support rod is provided with two protrusions, which are engaged in the grooves. In this way, the telescopic adjustment rod can be stored at the bottom of the second bearing plate, ensuring stability and convenience after storage.

[0038] like Figure 1-6 As shown in 10, a connecting hole is provided on the first support rod, a slide groove and a hook groove at one end of the slide groove are provided on the side of the first support plate, one end of the connecting rod is rotatably connected to the connecting hole through a screw, and the other end of the connecting rod slides in the slide groove and can be clamped in the hook groove. In the folded state, the first support plate, the first support rod and the connecting rod are all kept on the same horizontal plane to achieve compact storage. When it is necessary to unfold, it is only necessary to turn the first support rod downward so that it forms a predetermined angle with the first support plate. At the same time, one end of the connecting rod moves in the slide groove and is clamped into the hook groove to ensure that the position between the first support rod and the first support plate is fixed. Among them, the hook groove is located above the tail of the slide groove. In an embodiment not shown, a plurality of hook grooves can be set along the length direction of the slide groove. One end of the connecting rod is clamped into different hook grooves as needed, so as to flexibly adjust the angle between the first support rod and the first support plate, that is, adjust the height of the first support plate to adapt to the height of different patients.

[0039] like Figure 1-6As shown, the first bearing plate and the second bearing plate are hinged together through a rotating shaft, a first shaft sleeve is provided at one end of the first bearing plate, and the first shaft sleeve is rotatably connected to the rotating shaft, a second shaft sleeve is provided at one end of the second bearing plate, and the second shaft sleeve is rotatably connected to the rotating shaft, and the first support rod and the second support rod are rotatably connected to the rotating shaft respectively. When the first bearing plate is kept in a horizontal state, the first support rod forms a relatively fixed connection with the first bearing plate through a connecting rod to ensure stable support. At the same time, a limiter is provided between the first support rod and the second support rod, and the limiter effectively limits the downward swing angle of the first support rod and the second support rod, ensuring that they can form a stable inverted V-shaped structure to achieve stable support of the first bearing plate and the second bearing plate.

[0040] Figure 7 A schematic diagram of an auxiliary device for knee joint X-ray examination after folding is shown. As shown in the figure, when the auxiliary device is not in use, the first supporting plate, the first support rod and the connecting rod can be folded and maintained on the same horizontal plane, the second support rod and the first support rod are also at the same horizontal position, the telescopic adjustment rod is stored at the bottom of the second supporting plate, and the lower end of the telescopic adjustment rod is clamped in the card slot, so that the auxiliary device forms a flat plate structure or a sheet structure as a whole after folding, so that the entire device occupies less space and is easy to take and carry.

[0041] like Figure 1-6 As shown, the bottom of the first support rod and the second support rod are also configured with a lifting base. When the first support rod and the second support rod are deployed for support, the heights of the first load-bearing plate and the second load-bearing plate are relatively fixed, and the lifting base can adjust the overall height of the auxiliary device according to the patient's height and the position of the X-ray equipment. The lifting method of the lifting base can be hydraulic, pneumatic, electric, etc.

[0042] Figure 3 and Figure 4 The schematic diagrams of the auxiliary device for knee X-ray examination when checking the tunnel position are shown respectively. A placement slot for placing the first imaging plate is provided on the first bearing plate, and the L-shaped rod includes a vertically arranged vertical rod and a horizontal rod. The vertical rod is provided with a first strip groove, and a third bearing plate is detachably installed between two opposite first strip grooves. When the second bearing plate is in an upward tilted position by being clamped in the clamping slot by the telescopic adjustment rod, the thigh is close to the second bearing plate, the knee joint is located on the first imaging plate, and the calf is close to the first bearing plate, forming a prone posture. The X-ray equipment is located directly above the knee joint, and X-ray photography of the knee joint tunnel position can be realized. The angle β formed between the first bearing plate and the second bearing plate is 110-135°. Among them, the L-shaped rod is used as an armrest, and the L-shaped rod can be pulled out and rotated 90 degrees so that the horizontal rod faces the patient to provide a grip point for the patient. For patients of different heights, the support length of the second bearing plate can also be extended by installing a third bearing plate to meet personalized needs and ensure the smooth progress of the examination.

[0043] Figure 5 and Figure 6 The schematic diagrams of the auxiliary device for knee joint X-ray examination when checking the axial position of the patella are respectively shown. The L-shaped rod includes a vertical rod and a horizontal rod, and a second strip groove is provided on the horizontal rod. A second imaging plate is detachably installed between two opposite second strip grooves. There is a certain distance between the bottom of the second imaging plate and the vertical rod to form a passage space allowing the foot to pass through. When the second bearing plate is in a downward tilted position by the telescopic adjustment rod being clamped in the clamping groove, the thigh is close to the first bearing plate, the knee joint is located at the hinge of the first bearing plate and the second bearing plate, the calf is close to the second bearing plate, the foot passes through the passage space and is located at the rear side of the second imaging plate, so that the patient forms a supine posture, and the X-ray photography of the axial position of the knee joint patella can be realized. The angle γ formed between the first bearing plate and the second bearing plate is 210-270°. Among them, the L-shaped rod is used to carry the second imaging plate. By pulling out the L-shaped rod and rotating it 90 degrees, the horizontal rod is perpendicular to the second bearing plate, and the second imaging plate can be inserted between the two opposite second strip grooves. The stretching length of the L-shaped rod can be adjusted for patients of different heights. In addition, the X-ray device is located above the patient, and the emitted X-rays first penetrate the knee joint and then focus on the second imaging plate, thereby obtaining high-quality image data.

[0044] The working method of the utility model is as follows:

[0045] X-ray photography of the posterior stress position of the knee joint: unfold the first support rod and the second support rod to form a support leg to support the first and second support plates. The first support plate is set horizontally, and the second support plate is adjusted to a vertical position. The telescopic adjustment rod is clamped in the slot and fixed, and the L-shaped rod is pulled outward to a certain length. The patient's thigh is close to the second support plate, and the calf is close to the first support plate. The knee joint is located at the hinge of the first and second support plates, forming a kneeling posture. The patient's own gravity exerts downward pressure on the knee joint, realizing X-ray photography of the posterior stress position.

[0046] X-ray photography of the knee joint tunnel: unfold the first support rod and the second support rod to form a support leg to support the first and second support plates. The first support plate is set horizontally, and the second support plate is adjusted to an upward tilted position. It is fixed in the slot by the telescopic adjustment rod, and the first imaging plate is installed on the first support plate. The L-shaped rod is pulled outward to a certain length and the L-shaped rod is rotated. The patient's thigh is close to the second support plate, the knee joint is located on the first imaging plate, and the calf is close to the first support plate to achieve X-ray photography of the knee joint tunnel.

[0047] X-ray photography of the axial position of the knee joint patella: unfold the first support rod and the second support rod to form a support leg to support the first and second support plates, the first support plate is set horizontally, the second support plate is adjusted to a downward tilted position, and is fixed in the slot by the telescopic adjustment rod, the L-shaped rod is pulled outward to a certain length and the L-shaped rod is rotated, and the second imaging plate is installed between the two opposite second strip grooves. The patient's thigh is close to the first support plate, the knee joint is located at the hinge of the first and second support plates, the calf is close to the second support plate, and the foot passes through the through space under the L-shaped rod to achieve X-ray photography of the axial position of the knee joint patella.

[0048] In general, the utility model is an auxiliary device for knee joint X-ray examination, comprising a first bearing plate, a second bearing plate and two pairs of struts, and the angle between the first bearing plate and the second bearing plate can be accurately adjusted by a telescopic adjustment rod. When the second bearing plate is in a vertical position, it can ensure that the patient's legs form a right-angle kneeling posture on the first bearing plate and the second bearing plate, and X-ray examination of the posterior stress position of the knee joint can be achieved without additional human assistance. In addition, according to the inspection needs, the angle between the first bearing plate and the second bearing plate can be adjusted by a telescopic adjustment rod, so as to adapt to the X-ray examination of the tunnel position and the patellar axis position, and it has high applicability in the multi-position examination of the knee joint. At the same time, the device is designed with a folding and storage function, and the first bearing plate, the second bearing plate and the two pairs of struts can be folded and stored, which is convenient for storage and transportation, occupies a small space, and improves its portability and practicality. The telescopic adjustment rod of the utility model includes a telescopic support rod and a transverse support rod, and the transverse support rod can be clamped in different card slots, thereby providing multiple angle gear selections to meet the needs of knee joint X-ray examination in different positions. In addition, the telescopic support rod adopts a sleeve design, that is, one tube can slide inside another tube, so that the distance between the second bearing plate and the transverse support rod can be flexibly adjusted. This not only allows the second bearing plate to be further fine-tuned on the basis of a fixed gear angle, but also ensures the accuracy of angle adjustment, improves the success rate of knee joint X-ray examinations, and provides patients with a more accurate and reliable diagnosis basis.

[0049] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. An auxiliary device for X-ray examination of knee joints, characterized in that: include: A first carrying plate arranged horizontally; A second carrying plate, one end of which is hinged to one end of the first carrying plate and can be rotated outward from a vertical position to an inclined position; The support leg is a pair of first and second support rods, each of which is connected to the second support plate by a connecting rod and a connecting rod, and the connecting rod is connected to the first support plate by a connecting rod. The first and second support plates are connected in a horizontal direction to the support plate, and the second and second support plates are connected in a horizontal direction to the support plate. The first and second support plates are connected in a horizontal direction to the support plate, and the connecting rod is connected in a horizontal direction to the support plate. The connecting rod is ...

2. An auxiliary device for knee joint X-ray examination according to claim 1, characterized in that: A pair of first receiving grooves are arranged at the other end of the second bearing plate. L-shaped rods are slidably installed in the first receiving grooves. The L-shaped rods are extended out of the second bearing plate by pulling them.

3. The auxiliary device for knee joint X-ray examination according to claim 2, characterized in that: The first supporting plate is provided with a placement groove for placing the first imaging plate, the L-shaped rod includes a vertical rod and a horizontal rod which are vertically arranged, the vertical rod is provided with a first strip groove, and a third supporting plate is detachably installed between two opposite first strip grooves. When the second supporting plate is in an upwardly inclined position by being clamped in the clamping groove through the telescopic adjustment rod, the thigh is tightly attached to the second supporting plate, the knee joint is located on the first imaging plate, and the calf is tightly attached to the first supporting plate, so that X-ray photography of the knee joint tunnel position can be realized.

4. The auxiliary device for knee joint X-ray examination according to claim 3, characterized in that: The angle formed between the first supporting plate and the second supporting plate is 110-135°.

5. The auxiliary device for knee joint X-ray examination according to claim 2, characterized in that: The L-shaped rod includes a vertical rod and a horizontal rod which are vertically arranged, and a second strip groove is provided on the horizontal rod. A second imaging plate is detachably installed between two opposite second strip grooves. A certain distance is provided between the bottom of the second imaging plate and the vertical rod to form a passing space allowing the foot to pass through. When the second supporting plate is in a downwardly inclined position by clamping the telescopic adjustment rod in the clamping slot, the thigh is tightly attached to the first supporting plate, the knee joint is located at the hinge of the first supporting plate and the second supporting plate, the calf is tightly attached to the second supporting plate, the foot passes through the passing space and is located on the rear side of the second imaging plate, so that X-ray photography of the axial position of the patella of the knee joint can be realized.

6. The auxiliary device for knee joint X-ray examination according to claim 5, characterized in that: The angle formed between the first supporting plate and the second supporting plate is 210-270°.

7. The auxiliary device for knee joint X-ray examination according to claim 1, characterized in that: The telescopic adjustment rod includes a telescopic support rod and a transverse support rod. One end of the telescopic support rod is rotatably connected to the bottom of the second supporting plate, and the other end of the telescopic support rod is fixedly connected to the transverse support rod. The two ends of the transverse support rod are respectively clamped in the clamping grooves, wherein the telescopic support rod is composed of two tubes, and one tube can slide in the other tube to adjust the distance between the second supporting plate and the transverse support rod.

8. The auxiliary device for knee joint X-ray examination according to claim 7, characterized in that: A second receiving groove is provided at the bottom of the second supporting plate, and the second receiving groove cooperates with the telescopic support rod. Two opposite inner sides of the second receiving groove are provided with grooves, and one end of the telescopic support rod is correspondingly provided with two protrusions, which are clamped in the grooves.

9. The auxiliary device for knee joint X-ray examination according to claim 1, characterized in that: The first supporting plate and the second supporting plate are hinged together through a rotating shaft. A first shaft sleeve is provided at one end of the first supporting plate, and the first shaft sleeve is rotatably connected to the rotating shaft. A second shaft sleeve is provided at one end of the second supporting plate, and the second shaft sleeve is rotatably connected to the rotating shaft. The first support rod and the second support rod are respectively rotatably connected to the rotating shaft.

10. The auxiliary device for knee joint X-ray examination according to claim 1, characterized in that: A connecting hole is provided on the first support rod, a sliding groove and a hook groove at one end of the sliding groove are provided on the side of the first bearing plate, one end of the connecting rod is rotatably connected to the connecting hole through a screw rod, and the other end of the connecting rod slides in the sliding groove and can be clamped in the hook groove.

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