Elbow examination positioning device for x-ray ct

Abstract

The application discloses an elbow joint examination positioning device for X-ray CT, which comprises a supporting seat for detachable mounting on a scanning bed, a support slidingly mounted on the supporting seat in the height direction, and an elbow joint fixator comprising an upper arm brace and a lower arm brace which are hingedly connected, wherein the upper arm brace is mounted on the support through a universal connecting structure, the upper arm brace and the lower arm brace are of the same structure, the upper arm brace comprises two arc-shaped baffles, the two arc-shaped baffles are connected through a telescopic structure at one side edge, an opening is formed between the other side edges of the two arc-shaped baffles, and a restraint belt is arranged at the opening. The application adjusts the fixing height, direction and angle of the elbow joint by slidingly mounting the support on the supporting seat, arranging the universal connecting structure and hingedly connecting the upper arm brace and the lower arm brace, and the upper arm brace and the lower arm brace are provided as two arc-shaped baffles which are connected through the telescopic structure, so that the arm dimensions of different patients can be adapted, and clearer images can be obtained while ensuring the comfort of the patients.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to an elbow joint positioning device for X-ray CT examination. Background Technology

[0002] Osteoarticular disorders are common in clinical practice, including both traumatic and non-traumatic conditions, with elbow injuries being particularly prevalent. Traditionally, plain X-ray films are used to diagnose osteoarticular disorders. However, due to the complex structure of the elbow joint, conventional two-dimensional X-ray imaging cannot fully and clearly display the joint's details. In contrast, X-ray CT, with its rapid scanning, multi-planar imaging, and powerful post-processing techniques, can clearly display the anatomical details of the joint, greatly improving the detection rate of elbow injuries. Therefore, it has been widely used in elbow joint examinations.

[0003] In elbow joint examinations, the position of the elbow joint significantly affects image quality. During routine examinations, patients typically place their upper limb naturally at their side or abdomen. In this position, the scan needs to penetrate the chest and abdomen to image the joint area. To ensure image quality, the radiation dose needs to be increased. Furthermore, because the conventional position deviates from the scan center, image quality is affected. If the patient raises their forearm above their head or moves it to one side of their body, bringing the affected limb as close to the scan centerline as possible (i.e., the X-ray only passes through the forearm), the radiation dose can be reduced, and external artifacts and noise caused by centerline deviation can be avoided.

[0004] However, for patients with severe elbow injuries, limited shoulder movement, and inability to raise their upper limbs, as well as pediatric patients who are too young to control their body movements or maintain a fixed posture, an auxiliary positioning device is needed during scanning to elevate the affected limb so that the elbow joint is not on the same level as the spine or chest and abdomen.

[0005] Therefore, it is necessary to design an elbow joint positioning device for X-ray CT examination to adjust and fix different angles, heights and directions of the elbow joint in order to obtain a position that is comfortable for the patient and does not affect the image quality. Utility Model Content

[0006] The purpose of this invention is to provide an elbow joint positioning device for X-ray CT examination, addressing the issues of conventional positioning affecting image quality and excessive radiation dose during elbow joint examinations in existing technologies. This device can effectively adjust and fix different angles, heights, and directions of the elbow joint, ensuring patient comfort while avoiding external artifacts and noise, thereby obtaining clearer images and improving the detection rate of elbow joint injuries.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] An elbow joint positioning device for X-ray CT examination, comprising:

[0009] Support base for detachable mounting on the scanning bed;

[0010] The bracket is slidably mounted on the support base along the height direction;

[0011] An elbow joint fixation device includes an upper arm brace and a lower arm brace that are hinged together. The upper arm brace is mounted on a bracket via a universal joint structure. The upper arm brace and the lower arm brace have the same structure. The upper arm brace includes two arc-shaped baffles. One side of the two arc-shaped baffles is connected by a telescopic structure, and an opening is formed between the other side of the two arc-shaped baffles. A restraint strap is provided at the opening.

[0012] In some embodiments, the universal joint structure includes a ball joint, a ball head movably embedded in the ball joint, and a locking member for locking the position of the ball head and the ball joint, wherein the ball joint is fixed to the bracket and the ball head is fixed to the upper arm support.

[0013] In some embodiments, the telescopic structure includes fixed blocks respectively fixed to the two arc-shaped baffles and a telescopic rod connected between the two fixed blocks, and an elastic net is also provided between the two sides where the two arc-shaped baffles are connected.

[0014] In some embodiments, the telescopic structure includes a first support block and a second support block respectively fixed to the two arc-shaped baffles. A slot is provided on one side of the first support block, and the second support block is slidably connected to the slot. A limiting member is also provided on the first support block to limit the position of the first support block and the second support block.

[0015] In some embodiments, the inner surface of the arc-shaped baffle is provided with a flexible element.

[0016] In some embodiments, the support base includes a base and a support column fixed on the base. The base includes a top plate, two side plates disposed opposite to each other at both ends of the top plate, and positioning bolts passing through the two side plates.

[0017] In some embodiments, a sliding connection structure is provided between the bracket and the support column. The sliding connection structure includes a slide rail, a slider, and a fixing member for locking the positions of the slide rail and the slider. The slide rail is disposed on the support column and extends along the height direction, and the slider is disposed on the bracket.

[0018] In some embodiments, a hinge structure is provided between the upper arm support and the lower arm support. The hinge structure includes two arc-shaped plates and a positioning member for locking the relative position of the two arc-shaped plates. The two arc-shaped plates are respectively disposed on the outer surfaces of the adjacent ends of the upper arm support and the lower arm support, and the arc-shaped plates are bent toward the opening at both ends in the length direction.

[0019] Both of the arc-shaped plates are provided with through holes extending along the length direction. The positioning member passes through the two through holes and can slide within the two through holes when unlocked.

[0020] In some embodiments, the restraint strap has a fixed end and a free end, the fixed end being fixed to one of the two arc-shaped baffles, and the free end being provided with a Velcro tab on one of the other arc-shaped baffles and a Velcro tab on the other.

[0021] In some embodiments, the support base, the bracket, and the elbow joint fixator are made of non-metallic materials.

[0022] Due to the application of the above technical solution, the beneficial effects of this application compared with the prior art are as follows:

[0023] This application presents an elbow joint positioning device for X-ray CT examination. By sliding a bracket onto a support base, the fixed height of the elbow joint can be adjusted. A universal joint structure allows the upper arm brace to be mounted on the bracket, enabling adjustment of the fixed direction of the elbow joint. A hinged connection between the upper and lower arm braces allows adjustment of the fixed angle of the elbow joint. Furthermore, the upper and lower arm braces are designed to be connected by two arc-shaped baffles via a telescopic structure, thus adapting to different arm dimensions of patients. This device can precisely adjust the angle, direction, and height of the elbow joint, ensuring patient comfort while avoiding external artifacts and noise, thereby obtaining clearer images and improving the detection rate of elbow joint injuries. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the elbow joint examination positioning device in the embodiments of this application.

[0026] Explanation of reference numerals in the attached figures

[0027] 1-Support base; 11-Base; 111-Top plate; 112-Side plate; 113-Positioning bolt; 12-Support column; 2-Bracket; 3-Elbow joint fixator; 31-Upper arm brace; 311-Arc-shaped baffle; 312-Telescopic structure; 3121-Fixing block; 3122-Telescopic rod; 313-Flexible component; 32-Lower arm brace; 33-Universal connection structure; 331-Ball head seat; 332-Ball head; 333-Locking component; 34-Hinged structure; 341-Arc-shaped plate; 342-Through hole; 343-Positioning component; 4-Slide rail; 5-Fixing component; 7-Restraint strap; 8-Elastic net. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0030] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the present invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0031] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0032] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] Please see Figure 1 One embodiment of this application provides an elbow joint examination positioning device for X-ray CT, including a support base 1, a bracket 2, and an elbow joint fixator 3. It should be noted that, in order to avoid affecting the scan results during scanning, in this embodiment, the support base 1, the bracket 2, and the elbow joint fixator 3 are all made of non-metallic materials, such as polypropylene and polycarbonate.

[0035] The support base 1 is used for detachable mounting on the scanning bed. In this embodiment, the support base 1 includes a base 11 and support columns 12 fixed on the base 11. The base 11 includes a top plate 111, two side plates 112 disposed opposite to each other at both ends of the top plate 111, and positioning bolts 113 passing through the two side plates 112. The base 11 is fixed to the scanning bed by the positioning bolts 113.

[0036] The bracket 2 is slidably mounted on the support base 1 along the height direction to adjust the fixed height of the elbow joint. In this embodiment, a sliding connection structure is provided between the bracket 2 and the support column 12. The sliding connection structure includes a slide rail 4, a slider, and a fixing member 5 for locking the position of the slide rail 4 and the slider. The slide rail 4 is disposed on the support column 12 and extends along the height direction, and the slider is disposed on the bracket 2. Specifically, the fixing member 5 is a bolt passing through the slider, and one end of the bolt can abut against the surface of the slide rail 4. This application does not specifically limit the shape of the slide rail 4 and the slider.

[0037] The elbow joint fixator 3 includes an upper arm brace 31 and a lower arm brace 32 hinged together. The upper arm brace 31 is mounted on the support 2 via a universal joint structure 33. The upper arm brace 31 and the lower arm brace 32 have the same structure. The upper arm brace 31 includes two arc-shaped baffles 311, one side of which is connected by a telescopic structure 312. An opening is formed between the other sides of the two arc-shaped baffles 311, and a restraint strap 7 is provided at the opening. The upper arm brace 31 is mounted on the support 2 via the universal joint structure 33 to adjust the direction of elbow joint fixation. The structure of the upper arm brace 31 and the lower arm brace 32, with one side of the two arc-shaped baffles 311 connected by the telescopic structure 312, can accommodate patients with different arm dimensions and has a wide range of applications.

[0038] In detail, a hinge structure 34 is provided between the upper arm brace 31 and the lower arm brace 32. In this embodiment, the hinge structure 34 includes two arc-shaped plates 341 and a positioning member 343 that locks the relative position of the two arc-shaped plates 341. The two arc-shaped plates 341 are respectively disposed on the outer surfaces of the adjacent ends of the upper arm brace 31 and the lower arm brace 32, and the arc-shaped plates 341 are bent toward the opening at both ends in the length direction. Each of the two arc-shaped plates 341 is provided with a through hole 342 extending in the length direction. The positioning member 343 passes through the two through holes 342 and can slide within the two through holes 342 when unlocked. Since the arc-shaped plates 341 are bent toward the opening at both ends in the length direction to form an arc shape, when the two arc-shaped plates 341 are close together, the upper arm brace 31 and the lower arm brace 32 are close together and the included angle decreases, and vice versa.

[0039] In some alternative embodiments, the inner surface of the arc-shaped baffle 311 is provided with a flexible element 313. The flexible element 313 can provide a softer contact surface, reduce direct contact between hard materials and the patient's skin, thereby improving the patient's comfort during the examination and avoiding pressure or discomfort caused by prolonged contact. Specifically, the flexible element 313 can be a sponge.

[0040] In this embodiment, the universal joint structure 33 includes a ball joint seat 331, a ball head 332 movably embedded in the ball joint seat 331, and a locking member 333 for locking the position of the ball head and the ball joint seat 331. The ball joint seat 331 is fixed to the bracket 2, and the ball head 332 is fixed to the upper arm support 31. Specifically, the locking member 333 is a bolt. The ball joint seat 331 has a placement groove for placing the ball head 332, and a threaded hole communicating with the placement groove is opened axially in the ball joint seat 331. The bolt passes through the threaded hole and abuts against the ball head 332 to restrict the rotation of the ball head 332 in the placement groove, thereby locking the position of the ball head 332 and the ball joint seat 331. This is a conventional structure and will not be described in detail here.

[0041] In some optional embodiments, the telescopic structure 312 includes fixing blocks 3121 respectively fixed to two arc-shaped baffles 311 and a telescopic rod 3122 connected between the two fixing blocks 3121. An elastic net 8 is also provided between the two sides where the two arc-shaped baffles 311 connect. By providing the elastic net 8, the affected limb can be supported, avoiding the impact of limb movement or unstable position on the accurate positioning of the elbow joint, and ensuring the stability and correctness of the elbow joint during X-ray CT examination.

[0042] In some alternative embodiments, the telescopic structure 312 includes a first support block and a second support block respectively fixed to two arc-shaped baffles 311. A slot is provided on one side of the first support block, and the second support block is slidably connected to the slot. A limiting member for defining the positions of the first and second support blocks is also provided on the first support block. Specifically, this limiting member is a bolt.

[0043] In this embodiment, the restraint strap 7 has a fixed end and a free end. The fixed end is fixed to one of the two arc-shaped baffles 311, and the free end is provided with a Velcro fastener to one of the other arc-shaped baffles 311, while the other is provided with a Velcro fastener. Admittedly, in other embodiments, the free end of the restraint strap 7 can also be fixed to the other arc-shaped baffle 311 by a buckle.

[0044] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A positioning device for elbow joint examination in X-ray CT, characterized in that, include: Support base for detachable mounting on the scanning bed; The bracket is slidably mounted on the support base along the height direction; An elbow joint fixation device includes an upper arm brace and a lower arm brace that are hinged together. The upper arm brace is mounted on a bracket via a universal joint structure. The upper arm brace and the lower arm brace have the same structure. The upper arm brace includes two arc-shaped baffles. One side of the two arc-shaped baffles is connected by a telescopic structure, and an opening is formed between the other side of the two arc-shaped baffles. A restraint strap is provided at the opening.

2. The elbow joint positioning device for X-ray CT examination as described in claim 1, characterized in that, The universal joint structure includes a ball joint seat, a ball head movably embedded in the ball joint seat, and a locking member for locking the position of the ball head and the ball joint seat. The ball joint seat is fixed on the bracket, and the ball head is fixed on the upper arm support.

3. The elbow joint positioning device for X-ray CT examination as described in claim 1, characterized in that, The telescopic structure includes fixed blocks respectively fixed to the two arc-shaped baffles and a telescopic rod connected between the two fixed blocks. An elastic net is also provided between the two sides of the two arc-shaped baffles that are connected.

4. The elbow joint positioning device for X-ray CT examination as described in claim 1, characterized in that, The telescopic structure includes a first support block and a second support block respectively fixed on the two arc-shaped baffles. A slot is provided on one side of the first support block, and the second support block is slidably connected to the slot. A limiting member is also provided on the first support block to limit the position of the first support block and the second support block.

5. The elbow joint positioning device for X-ray CT examination as described in claim 1, characterized in that, The inner surface of the arc-shaped baffle is provided with a flexible component.

6. The elbow joint positioning device for X-ray CT examination as described in claim 1, characterized in that, The support base includes a base and a support column fixed on the base. The base includes a top plate, two side plates disposed opposite to each other at both ends of the top plate, and positioning bolts passing through the two side plates.

7. The elbow joint positioning device for X-ray CT examination as described in claim 6, characterized in that, A sliding connection structure is provided between the bracket and the support column. The sliding connection structure includes a slide rail, a slider, and a fixing member for locking the position of the slide rail and the slider. The slide rail is disposed on the support column and extends along the height direction, and the slider is disposed on the bracket.

8. The elbow joint positioning device for X-ray CT examination as described in claim 1, characterized in that, A hinge structure is provided between the upper arm support and the lower arm support. The hinge structure includes two arc-shaped plates and a positioning member that locks the relative position of the two arc-shaped plates. The two arc-shaped plates are respectively disposed on the outer surfaces of the adjacent ends of the upper arm support and the lower arm support, and the arc-shaped plates are bent toward the opening at both ends in the length direction. Both of the arc-shaped plates are provided with through holes extending along the length direction. The positioning member passes through the two through holes and can slide within the two through holes when unlocked.

9. The elbow joint positioning device for X-ray CT examination as described in claim 1, characterized in that, The constraint strap has a fixed end and a free end. The fixed end is fixed to one of the two arc-shaped baffles. The free end is provided with a Velcro tab on one of the other arc-shaped baffles and a Velcro tab on the other.

10. The elbow joint positioning device for X-ray CT examination as described in claim 1, characterized in that, The support base, the bracket, and the elbow joint fixator are made of non-metallic materials.

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