Magnetic resonance arthrography distractor

Abstract

The utility model relates to a novel medical instrument technical field especially relates to a kind of magnetic resonance joint imaging tractor, the utility model embodiment provides the magnetic resonance joint imaging tractor, including fixed subassembly and traction subassembly, fixed subassembly is used to fix the joint to be examined, traction subassembly includes support frame, guide mechanism, towrope and counterweight, support frame adjustable height;Guide mechanism is set on support frame;Towrope one end is connected with fixed subassembly, and around set in guide mechanism;Counterweight is connected in the other end of towrope, for providing traction force;Wherein, the component of each traction of the utility model embodiment provides the magnetic resonance joint imaging tractor of the utility model is made of non-magnetic material, the utility model embodiment provides the magnetic resonance joint imaging tractor, and the direction and size of traction force are conveniently controlled, and the effect of traction is improved.

Description

Technical Field

[0001] This utility model relates to the field of novel medical device technology, and in particular to a magnetic resonance joint imaging traction device. Background Technology

[0002] Articular cartilage damage is a common cause of joint pain, stiffness, and limited mobility, especially prevalent among athletes and the elderly. Magnetic resonance imaging (MRI) is the primary imaging technique for diagnosing articular cartilage damage. In MRI, articular cartilage damage typically presents as a localized defect that gradually progresses from the surface to the deeper layers of the cartilage. Therefore, MRI needs to fully visualize the surface contours of the articular cartilage. However, in synovial joints of the limbs, the surfaces of the articular cartilage covering the ends of the joint bones are often in close contact, making it difficult for MRI to detect early or minor articular cartilage damage. By tractioning the joint to separate the articular cartilage surfaces at the ends of the joint bones, the accuracy of MRI in diagnosing articular cartilage damage can be effectively improved.

[0003] Currently, most joint traction devices used in MRI scans involve using bandages to fix the traction area and water bags to apply weight for simple traction. This is cumbersome to operate, and the traction direction and force are difficult to control, making it difficult to achieve standardized traction imaging. Utility Model Content

[0004] This invention provides a magnetic resonance joint imaging traction device, which is easy to operate, allows for easy control of the direction and magnitude of the traction force, and is applicable to magnetic resonance imaging machines of different brands.

[0005] This utility model provides a magnetic resonance joint imaging traction device, including a fixing component and a traction component. The fixing component is used to fix the joint to be examined. The traction component includes: a support frame with adjustable height; a guide mechanism disposed on the support frame; a traction rope, one end of which is connected to the fixing component and wound around the guide mechanism; and a counterweight connected to the other end of the traction rope to provide traction force. All components of the traction device are made of non-magnetic materials.

[0006] In one possible implementation, the fixing component includes: a flexible band adapted to wrap and fix the joint to be inspected; and a connecting structure disposed on the flexible band for connecting to a traction rope.

[0007] In one possible implementation, the flexible band is made of a biocompatible material and has an anti-slip structure on its surface.

[0008] In one possible implementation, the support frame includes: a base plate; uprights disposed on the base plate; and telescopic rods slidably connected to the uprights.

[0009] In one possible implementation, the support frame is equipped with pipe clamps for locking the traction rope after the counterweight reaches the predetermined counterweight requirement.

[0010] In one possible implementation, the support frame also includes a position locking structure for fixing the position of the telescopic rod relative to the column.

[0011] In one possible implementation, the counterweight includes multiple detachable counterweight units that provide different amounts of traction force through stacking and combination.

[0012] In one possible implementation, the individual weight of the counterweight unit is 1-5 kg, and the total weight is adjustable from 1-40 kg.

[0013] In one possible implementation, it also includes: an alarm device, comprising a pressure sensing unit and an audible alert unit, for issuing an alarm in an emergency.

[0014] In one possible implementation, the guiding mechanism includes at least two directional wheels for changing the direction of extension of the traction rope.

[0015] The magnetic resonance imaging traction device provided by this utility model fixes the joint to be examined through a fixing component. Then, the height of the support frame and the height of the guide mechanism are adjusted as needed to ensure that the traction force of the traction rope can be along the axis of the joint to be examined. The magnitude of the traction force can be adjusted by adding or removing counterweights, which is convenient to operate. All components of the traction device are made of non-magnetic materials, which can ensure safe and reliable operation in a strong magnetic field environment, while ensuring the stability and controllability of the traction effect. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the 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.

[0017] Fig. 1 This is a schematic diagram of the structure of a traction component provided by this utility model.

[0018] Fig. 2 This is a structural schematic diagram of a fixing component and a traction rope provided by this utility model.

[0019] Fig. 3 This is a schematic diagram of the structure of a warning device provided by this utility model.

[0020] Figure label: 1. Fixing component; 11. Flexible belt; 12. Connecting structure; 2. Traction assembly; 21. Support frame; 211. Base plate; 212. Column; 213. Telescopic rod; 214. Pipe clamp lock; 215. Position locking structure; 22. Guide mechanism; 221. Directional wheel; 23. Traction rope; 24. Counterweight; 3. Warning device; 31. Pressure sensing unit; 32. Sound prompt unit. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] The following is combined Figs. 1-3 This invention provides a magnetic resonance joint imaging traction device, comprising a fixation component 1 and a traction component 2. The fixation component 1 is used to fix the joint to be examined. The traction component 2 includes a support frame 21, a guide mechanism 22, a traction rope 23, and a counterweight 24. The support frame 21 is height adjustable.

[0023] The guide mechanism 22 is mounted on the support frame 21.

[0024] One end of the traction rope 23 is connected to the fixing component 1 and is wound around the guide mechanism 22.

[0025] The counterweight 24 is connected to the other end of the traction rope 23 to provide traction.

[0026] All components of the traction device are made of non-magnetic materials.

[0027] In this invention, the joint to be inspected is fixed by the fixing component 1, and then the height of the support frame 21 and the height of the guide mechanism 22 are adjusted as needed to ensure that the traction force of the traction rope 23 can be along the axial direction of the joint to be inspected. The magnitude of the traction force can be adjusted by adding or removing the counterweight 24, which is convenient for operation. All components of the traction device are made of non-magnetic materials, which can ensure safe and reliable operation in a strong magnetic field environment, while ensuring the stability and controllability of the traction effect.

[0028] Specifically, this invention's magnetic resonance joint imaging traction device effectively solves the technical problem of stable joint traction in strong magnetic field environments through its overall non-magnetic design and functional component configuration. In practical applications of high-field magnetic resonance imaging equipment such as 3.0 Tesla, ordinary metal materials can generate strong magnetic reactions, affecting image quality and potentially posing safety hazards to patients and medical staff. The use of non-magnetic materials in each component ensures the safety and reliability of the device in strong magnetic field environments. The adjustable height design of the support frame 21 provides good adaptability, allowing adjustment according to different patient body shapes and examination bed heights. The cooperation between the guide mechanism 22 and the traction rope 23 enables precise transmission of traction force to the joint being examined, while the counterweight 24 provides continuous and stable traction force, overcoming the problem of uneven manual traction force. This overall design achieves safe and reliable operation of the device in strong magnetic field environments, while ensuring the stability and controllability of the traction effect.

[0029] The use of non-magnetic materials, such as engineering plastics, carbon fiber composites, or aluminum alloys, not only ensures the safety of the equipment in strong magnetic field environments but also achieves multiple performance optimizations. Engineering plastics offer excellent processing performance and corrosion resistance, making them suitable for components that come into contact with the human body. Carbon fiber composites combine lightweight and high strength, making them suitable for load-bearing structural components. Aluminum alloys, while maintaining strength, also possess good thermal conductivity, aiding in heat dissipation. The selection of these materials ensures the functionality of the equipment while improving its service life and reliability.

[0030] In some embodiments, the fixing component 1 includes: a flexible belt 11 adapted to wrap and fix the joint to be inspected; and a connecting structure 12 disposed on the flexible belt 11 for connecting to the traction rope 23.

[0031] In the embodiments provided by this utility model, the fixation component 1 adopts a flexible band 11 and a specialized connecting structure 12, significantly improving the practicality of the device. The flexible band 11 can adaptively deform according to the shape of the human joint, ensuring both fixation effectiveness and avoiding localized pressure. The connecting structure 12 ensures a reliable connection between the traction rope 23 and the fixation component 1, preventing loosening or detachment during use. In clinical applications, this design allows operators to quickly complete the fixation process, improving work efficiency. Simultaneously, the structural design of the fixation component 1 also considers the need for rapid release in emergency situations, enhancing the safety of device use. Through a reasonable structural design, the traction force is evenly transmitted, avoiding excessive localized force that could cause discomfort to the patient.

[0032] Specifically, in this embodiment, the flexible band 11 is bound and fixed to the joint to be examined. The flexible band 11 includes various types, and the appropriate type can be selected according to the specific examination site, such as the hip joint, knee joint, etc., to ensure the fixation effect on different joints to be examined. Each set of flexible bands 11 can be used as a single piece or in combination.

[0033] In some embodiments, the flexible band 11 is made of a biocompatible material and has an anti-slip structure on its surface.

[0034] In the embodiments provided by this utility model, the flexible band 11 is made of biocompatible material and features an anti-slip structure, which is of great significance in practical applications. The biocompatible material ensures safety in direct contact with human skin, preventing adverse reactions such as skin allergies and inflammation even during a 30-60 minute examination. The surface anti-slip structure increases friction with the skin, achieving stable fixation with relatively low wrapping pressure, avoiding the problem of traditional fixation methods requiring excessive tightening to prevent slippage. This design significantly improves patient comfort while ensuring effective fixation. The anti-slip structure also reduces minute displacements during the examination, improving the accuracy of image acquisition.

[0035] Specifically, when the flexible band 11 is used to fix the joint to be examined, it can also be tied to the outside of the clothing. The anti-slip structure increases the friction between the flexible band 11 and the clothing, which can also ensure the fixation effect.

[0036] In some embodiments, the support frame 21 includes: a base plate 211; a column 212 disposed on the base plate 211; and a telescopic rod 213 slidably connected to the column 212.

[0037] In this invention, the support frame 21 adopts a three-section structural design consisting of a base plate 211, a column 212, and a telescopic rod 213, optimizing the equipment's performance. The base plate 211 provides a stable support foundation, and its design allows for selection of different shapes and sizes according to site conditions, enhancing the equipment's adaptability. The vertical column 212 features a hollow design, reducing weight while ensuring strength, and the internal space can be used to accommodate functional components such as signal cables. The sliding connection design between the telescopic rod 213 and the column 212 enables precise height adjustment, with an adjustment range covering the needs of different examination positions. This structural design not only ensures operational stability but also facilitates the assembly, maintenance, and transportation of the equipment.

[0038] In some embodiments, the support frame 21 is provided with a pipe clamp lock 214 for locking the traction rope 23 after the counterweight 24 reaches the predetermined counterweight requirement.

[0039] In this invention, the design of the tube clamp lock 214 on the support frame 21 provides a reliable guarantee for precise control of the traction force. In practical applications, doctors can adjust the counterweight according to the patient's condition and examination needs. Once the ideal traction force is achieved, the traction rope 23 is fixed by the tube clamp lock 214 to ensure that the traction force remains constant throughout the examination. This locking mechanism adopts a quick-locking design, allowing operators to complete the locking operation with one hand, which is of great value when rapid adjustments are needed or in response to emergencies. At the same time, the design of the locking mechanism also takes into account anti-slip performance, maintaining a reliable locked state even under large traction forces.

[0040] In some embodiments, the support frame 21 further includes a position locking structure 215 for fixing the position of the telescopic rod 213 relative to the column 212.

[0041] In this invention, the position locking structure 215 is used to lock the height of the telescopic rod 213. It can be applied to different MRI machine models, or the height can be adjusted according to different joints to be inspected before locking and fixing. The position locking structure 215 is a quick wrench. By flipping the quick wrench, the telescopic rod 213 and the column 212 can be quickly locked and unlocked, which facilitates quick adjustment during the inspection process.

[0042] In some embodiments, the counterweight 24 includes a plurality of detachable counterweight units that provide different amounts of traction force by being stacked and combined.

[0043] In this embodiment of the invention, the counterweight 24 employs a design with multiple detachable counterweight units, enabling precise adjustment of the traction force. In clinical applications, different patients have varying traction force requirements. By combining different numbers of counterweight units, doctors can precisely control the traction force based on the patient's specific condition (such as weight, joint condition, etc.). The detachable design also facilitates the transport and storage of the equipment, allowing operators to add or remove counterweight units as needed. Each counterweight unit's connection incorporates an anti-detachment design to ensure that accidental separation does not occur during use.

[0044] Specifically, the counterweight 24 includes an assembly block connected to the end of the traction rope 23 and counterweight blocks detachably mounted on the assembly block. The assembly block is provided with a bearing part for mounting the counterweight blocks. The counterweight is adjusted by assembling counterweight blocks of different weights and quantities onto the bearing part of the assembly block.

[0045] Furthermore, the individual weight of the counterweight unit is 1-5kg, and the total weight is adjustable from 1-40kg.

[0046] In this embodiment of the invention, the counterweight unit adopts a unit weight design of 1-5kg, and the total weight is adjustable from 1-40kg. This design is based on extensive clinical experience. The smaller unit weight facilitates precise adjustment of the traction force; operators can achieve an adjustment accuracy of as little as 1kg by adding or removing counterweight units. The maximum adjustment range of 40kg meets the needs of most clinical traction, even for patients with larger body weights or special cases requiring greater traction force. This weight range design also considers the ease of use for operators; the moderate weight of a single counterweight unit facilitates daily operation.

[0047] In some embodiments, it further includes: an alarm device 3, including a pressure sensing unit 31 and an audible alert unit 32, for issuing an alarm in an emergency.

[0048] In one specific embodiment, the pressure sensing unit 31 can be installed on the traction rope 23. The pressure sensing unit 31 can monitor changes in traction force in real time. When an abnormality occurs (such as a sudden increase or decrease in traction force), the audible alert unit 32 will immediately issue an alarm. This design allows medical staff to promptly detect and address potential safety hazards, preventing accidents. In practical applications, once an abnormality in traction occurs, the operator can immediately take measures, such as loosening the buckle or removing part of the counterweight, to ensure patient safety.

[0049] In another specific embodiment, the pressure sensing unit 31 is a safety balloon. During the examination, the patient can trigger the sound prompt unit 32 by squeezing the safety balloon to cancel the examination at any time.

[0050] In some embodiments, the guide mechanism 22 includes at least two directional wheels 221 for changing the extension direction of the traction rope 23.

[0051] In this embodiment of the invention, the guide mechanism 22 employs a design with at least two directional wheels 221, offering unique advantages in traction direction adjustment. The arrangement of multiple directional wheels 221 allows the traction rope 23 to flexibly change its path in different directions, meeting the traction angle requirements for examining different joints. For example, examining the shoulder joint may require upward traction, while examining the knee joint may require horizontal traction; these directional changes can be easily achieved through the cooperation of the directional wheels 221. The directional wheels 221 employ a special bearing design, significantly reducing friction loss during traction and ensuring efficient transmission of traction force. This design also considers the service life of the traction rope 23, reducing bending stress through a reasonable wheel diameter design.

[0052] Specifically, one of the directional rollers 221 is at the same height as the joint to be tested, which is used to ensure that the traction force of the traction rope 23 can be applied along the axial direction of the joint to be tested; the other directional roller 221 is used to ensure the height at which the counterweight 24 applies force.

[0053] The support frame 21 is provided with mounting positions for mounting the directional wheels 221. The number and height of the directional wheels 221 can be selected according to actual needs. For example, they can be used to apply traction force vertically upward, horizontally, or at a certain angle.

[0054] The magnetic resonance arthrometry traction device fixes the joint to be examined through the fixing component 1. Then, the height of the support frame 21 and the height of the guide mechanism 22 are adjusted as needed to ensure that the traction force of the traction rope 23 can be along the axis of the joint to be examined. The magnitude of the traction force can be adjusted by adding or removing the counterweight 24, which is convenient for operation. All components of the traction device are made of non-magnetic materials, which can ensure safe and reliable operation in a strong magnetic field environment, while ensuring the stability and controllability of the traction effect.

[0055] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A magnetic resonance arthroplasty traction device, characterized in that, The assembly includes a fixation component (1) and a traction component (2). The fixation component (1) is used to fix the joint to be examined. The traction component (2) includes: The support frame (21) is height adjustable and includes: a base plate (211); a column (212) disposed on the base plate (211); and a telescopic rod (213) slidably connected to the column (212). The guide mechanism (22) is set on the support frame (21) and includes at least two guide wheels (221). The height of one of the guide wheels (221) is matched with the height of the joint to be tested by adjusting the position of the telescopic rod (213) relative to the column (212) to ensure that the traction force can be applied along the axial direction of the joint to be tested. The traction rope (23) is connected at one end to the fixing component (1) and is wound around the multiple directional wheels (221) of the guide mechanism (22). A counterweight (24) is connected to the other end of the traction rope (23) to provide traction force; All components of the traction device are made of non-magnetic materials.

2. The magnetic resonance arthrometry traction device according to claim 1, characterized in that, The fixing component (1) includes: A flexible band (11) is suitable for wrapping and fixing the joint to be inspected; A connecting structure (12) is provided on the flexible belt (11) for connecting with the traction rope (23).

3. The magnetic resonance arthrometry traction device according to claim 2, characterized in that, The flexible belt (11) is made of biocompatible material and has an anti-slip structure on its surface.

4. The magnetic resonance arthrometry traction device according to claim 1, characterized in that, The support frame (21) is provided with a pipe clamp lock (214) for locking the traction rope (23) after the counterweight (24) reaches the predetermined counterweight requirement.

5. The magnetic resonance arthrometry traction device according to claim 1, characterized in that, The support frame (21) also includes: A position locking structure (215) is used to fix the position of the telescopic rod (213) relative to the column (212).

6. The magnetic resonance arthrometry traction device according to any one of claims 1-5, characterized in that, The counterweight (24) includes: Multiple detachable counterweight units can be stacked and combined to provide different levels of traction.

7. The magnetic resonance arthrometry traction device according to claim 6, characterized in that, The individual weight of the counterweight unit is 1-5kg, and the total weight is adjustable from 1-40kg.

8. The magnetic resonance arthrometry traction device according to claim 1, characterized in that, Also includes: The warning device (3) includes a pressure sensing unit (31) and an audible prompting unit (32) for issuing an alarm in an emergency.

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