Upper limb three-dimensional fixing traction device

Abstract

A base unit comprises a bottom plate, an operation plate and a supporting and adjusting plate, one end of the operation plate is rotationally connected with the bottom plate, and the other end of the operation plate is rotationally connected with the supporting and adjusting plate; the supporting adjusting plate can move relative to the bottom plate, so that the operation plate has various inclined states which are supported by the supporting adjusting plate and inclined relative to the bottom plate; the bottom plate, the operation plate and the support adjusting plate are made of X-ray permeable materials; tooth-shaped grooves are formed in the edges of the base units. The fixing piece set comprises at least one type of fixing piece, and the fixing piece is selected from a finger traction piece used for applying traction force to fingers, a finger supporting piece used for supporting and fixing the fingers, a skin retracting piece used for retracting the skin or soft tissue and a fixing belt used for pressing and fixing limbs to the operation plate. The fixing piece can be selectively connected with the tooth-shaped grooves in different positions through a connecting structure comprising a bead chain. The device has the advantages of being comprehensive in function, flexible in adjustment, stable in fixation and high in adaptability.

Description

Technical Field

[0001] This application relates to the field of medical assistive devices for upper limb surgery, specifically to a three-dimensional fixation and traction device for the upper limb. Background Technology

[0002] Upper limb surgery, including procedures on the hand, wrist, forearm, and elbow, is a common type of surgery in orthopedics, hand surgery, and trauma surgery. In these surgeries, especially those involving delicate procedures such as closed reduction and minimally invasive internal fixation of upper limb fractures, joint replacement, and tendon repair, continuous and stable traction and fixation of the affected limb are necessary to maintain the reduction, expose the surgical field, and provide a stable platform for the internal fixation procedure.

[0003] Currently, the main fixation and traction methods used in clinical practice are as follows: manual traction and fixation, simple mechanical traction devices, and traditional operating table accessories.

[0004] Manual traction and fixation is the most traditional method. An assistant manually applies continuous traction to the patient's upper limb, especially the fingers, to counteract muscle contractures, shortening, and displacement, while simultaneously stabilizing the limb. For example, in reduction surgeries for fractures of the metacarpals, phalanges, or distal radius, one or two assistants are needed to continuously traction the affected finger to correct fracture displacement, while also manually stabilizing the patient's overall upper limb posture to ensure the surgeon has sufficient operating space. This method has significant drawbacks: First, assistants are prone to fatigue from maintaining a fixed posture for extended periods, potentially leading to unstable traction force, decreased fracture reduction accuracy, and even the need for repeated readjustments. Repeated intraoperative X-ray fluoroscopy significantly prolongs the operation time and affects the outcome. Second, when intraoperative fluoroscopy is required using a C-arm X-ray machine, assistants cannot completely avoid the radiation zone, posing a potential health hazard due to long-term cumulative radiation exposure. Third, the force of manual traction relies entirely on individual experience, lacking quantitative standards, and may result in insufficient or excessive traction. In medical institutions with insufficient staff, manual traction and fixation can also strain the surgical team's manpower allocation, affecting other medical procedures.

[0005] With the gradual development of medical equipment, some simple finger traction devices or limb fixation devices have emerged as auxiliary support structures for upper limb surgery. However, these structures generally suffer from limited functionality and poor adaptability. For example, a single finger traction device may only provide axial tension and cannot achieve multi-directional, multi-dimensional composite traction to correct complex fracture displacements such as rotation and lateral displacement. In addition, these devices often lack a unified, adjustable base platform, making it difficult to organically combine traction force with overall limb fixation and failing to provide a stable three-dimensional operating environment for surgery.

[0006] Regarding traditional operating table accessories, although operating tables are equipped with various brackets and fixation rods, these are typically designed for positioning under general anesthesia. For upper limb surgeries requiring precise angle adjustments and multi-point, multi-directional traction, their flexibility and specialization are insufficient. Furthermore, they usually contain numerous metal components, which can produce severe radiation artifacts during intraoperative fluoroscopy, affecting the surgeon's accurate assessment of fracture reduction and internal fixation device placement, necessitating repeated adjustments of the fluoroscopy angle and reducing surgical efficiency. Simultaneously, they are difficult to adapt to the rapidly developing robotic-assisted surgical systems, as robotic surgery is highly sensitive to intraoperative patient displacement, and traditional fixation methods cannot guarantee stability.

[0007] In summary, current upper limb surgical aids suffer from numerous problems, including poor flexibility, insufficient fixation stability, inadequate X-ray transmission performance, incomplete functional coverage, reliance on manual operation, and inability to adapt to robotic surgery. There is an urgent need for a three-dimensional upper limb fixation and traction device that can achieve flexible adjustment at multiple angles, multi-dimensional fixation and traction, real-time monitoring of traction force, and adaptability to the needs of X-ray transmission and robotic surgery. This device would address the practical difficulties encountered in clinical surgery and promote the further development of upper limb surgical techniques. Summary of the Invention

[0008] This application aims to solve at least one technical problem existing in the upper limb surgical assistive devices, such as poor angle adjustment flexibility, single fixation and traction function, poor X-ray transmission performance, reliance on manual operation, lack of traction force monitoring, and inability to adapt to robotic surgery, and to provide an upper limb three-dimensional fixation and traction device that is comprehensive in function, flexible in adjustment, stable in fixation, and highly adaptable.

[0009] The technical solution adopted in this application is as follows: A three-dimensional fixation and traction device for the upper limb includes a base unit comprising a base plate, an operating plate, and a support adjustment plate. One end of the operating plate is rotatably connected to the base plate, and the other end is rotatably connected to the support adjustment plate. The support adjustment plate is movable relative to the base plate, allowing the operating plate to have multiple tilt states supported by the support adjustment plate and tilted relative to the base plate. The base plate, the operating plate, and the support adjustment plate are made of an X-ray-transparent material. At least a portion of the edge of the base unit is provided with toothed grooves. A fixing assembly includes at least one type of fixing member. The fixing component is selected from: a finger traction component for applying traction force to the finger, a finger support component for supporting and fixing the finger, a skin retraction component for retracting the skin or soft tissue, and a limb fixing component for pressing and fixing the limb to the operating plate. The fixing component can selectively connect to toothed grooves at different positions on the base unit through a connection structure including a bead chain, and achieve fixation through the locking action of the bead chain. After the bead chain is engaged in the toothed groove and locked, it can transmit traction force or fixing force, thereby maintaining the fixing component, limb, skin or soft tissue in the expected position on the operating plate.

[0010] This technical solution integrates a base unit and a fixing kit to construct a highly integrated and comprehensive upper limb surgical fixation and traction system, achieving three-dimensional, multi-directional fixation and traction of the upper limb from the fingers to the trunk. Firstly, the rotating connection design of the operating plate, base plate, and support adjustment plate in the base unit, combined with the motion characteristics of the support adjustment plate relative to the base plate, allows the operating plate to achieve various tilt adjustments. This precisely matches the differentiated positional needs of surgeries on different parts of the body, such as the fingers, wrist joint, forearm, and upper arm. For example, finger fracture reduction surgery requires a 30°-40° tilt angle to facilitate traction reduction, while minimally invasive wrist joint surgery requires a near-horizontal tilt angle to ensure a clear view of the minimally invasive incision. This adjustment function solves the problem of traditional fixation support structures having a single angle and being unable to adapt to multiple surgical sites, eliminating the need for surgeons to adjust their operating posture due to positional limitations, significantly reducing surgical fatigue and improving operational accuracy. Secondly, the base unit is made of X-ray transparent material. When using a C-arm X-ray machine for X-ray fluoroscopy during the operation, it can avoid image artifacts and obstruction caused by metal or non-transmissible materials. Doctors can clearly observe the fracture reduction and the position of the internal fixation device without repeatedly adjusting the fluoroscopy angle, which greatly shortens the operation time and improves the safety of the operation. Furthermore, the selective fit between the toothed grooves on the edge of the base unit and the beaded chain connection structure of the fixation kit enables detachable connection of the fixation components. Surgeons can flexibly choose at least one fixation component, such as a finger traction component or a finger support component, depending on the type of surgery, without needing to replace the entire device, thus improving the versatility and ease of use of the equipment. Simultaneously, the fixation kit encompasses multiple core functions, including finger traction, finger support, skin retraction, and limb fixation, comprehensively covering the entire process of traction, support, retraction, and fixation during upper limb surgery. This eliminates the reliance on manual traction, manual incision retraction, and manual fixation and maintenance of the limb in traditional surgery. This not only reduces the manpower required for surgical assistants, alleviating the shortage of medical personnel, but also avoids problems such as unstable traction force and positional deviation during manual operation, ensuring the stability and precision of the surgical procedure. In addition, this device can meet the stringent requirements for positional stability in robotic surgery, while also providing medical personnel with the possibility of operating away from radiation areas.

[0011] The finger traction component includes a finger sleeve for fitting and binding on the finger, and a first beaded chain connected to the finger sleeve and for connecting with the toothed groove; the finger support component has a finger groove for accommodating and supporting the finger, and a through hole for the second beaded chain to pass through; the skin retraction component includes a traction hook for retracting skin or soft tissue, and a third beaded chain connected to the traction hook and for connecting with the toothed groove; the limb fixation component includes at least one fourth beaded chain.

[0012] In this technical solution, the combination design of the finger traction component and the first beaded chain allows the finger traction component to be tightly bound to the patient's finger. Through the connection between the first beaded chain and the toothed groove, continuous and stable traction fixation can be achieved after applying the required traction force. Compared to traditional manual traction, this structure can precisely maintain the traction force, avoiding weakening or fluctuation of the traction force due to human fatigue. Furthermore, it eliminates the need for an assistant to continuously maintain the traction posture, allowing the surgeon to focus on core operations such as fracture reduction and internal fixation. Simultaneously, the finger traction component is made of a flexible material, avoiding pressure damage to the patient's finger skin and improving patient comfort. For the finger support component, the design of the finger groove conforms to the finger contour, allowing the affected finger to be stably placed within the groove, effectively preventing finger displacement or wobbling during surgery. Additionally, the lateral range of the finger groove is preferably no more than the lateral midline and fingertip of the finger, thus not affecting the insertion of internal fixation devices such as Kirschner wires. The through-hole design allowing the second beaded chain to pass through not only achieves a secure connection between the finger support component and the base unit but also avoids interference from the second beaded chain on the finger within the groove, ensuring that the surgical operation is not affected. For the skin retraction component, the combination of the traction hook and the third bead chain allows the traction hook to precisely hook onto the edge of the surgical incision. The connection between the third bead chain and the toothed groove enables continuous retraction of the incision. Compared to traditional manual retraction using forceps or retractors, this structure stably maintains the exposure and opening range of the incision, avoiding incision closure or changes in retraction range due to fatigue during manual operation. This provides a clear and stable operating field of view, while reducing the manpower required for assistants, allowing the surgical team to cooperate more efficiently. For the limb fixation component, the design of at least one fourth bead chain flexibly adapts to the different upper limb sizes of patients. The connection between the fourth bead chain and the toothed groove tightly presses and fixes the patient's forearm, upper arm, fingers, and other parts to the operating board, effectively preventing overall upper limb displacement during surgery. Especially in robot-assisted surgery, this avoids the problem of upper limb displacement causing the robot's surgical path planning to fail, ensuring the continuity and precision of the robotic surgery and improving surgical efficiency.

[0013] The beaded chain includes a chain cord and a plurality of sliding beads slidably fitted on the chain cord. The chain cord is used to engage with the toothed groove and is locked in place by the sliding beads.

[0014] In this technical solution, the chain is used to embed into the toothed groove for initial positioning, while the slidable ball, after the chain is inserted into the toothed groove, utilizes its physical property that its diameter is larger than the groove opening to achieve reliable locking and fixation. Compared with traditional knot fixation or buckle fixation, the advantages of this structure are: First, the fixation is stronger. The locking action of the ball and the teeth of the toothed groove can effectively resist the tension generated during the operation and prevent the fixation from slipping. Second, the operation is more convenient. Doctors only need to slide the ball to adjust the tightness, without the need for cumbersome knot tying or buckle disassembly. Especially when it is necessary to adjust the traction force or the degree of retraction during surgery, the position of the ball can be quickly adjusted to change the fixation point, which greatly improves the operation efficiency. Third, the adaptability is wider. The flexibility of the chain allows it to adapt to different orientations of the toothed groove, while the slidability of the ball makes it easy to adjust the locking position, ensuring that the connection at different parts and angles remains stable.

[0015] The number of the finger traction component, the skin retraction component, and the limb fixation component are all multiple.

[0016] In this technical solution, by expanding the number of finger traction components, skin retraction components, and limb fixation components, the device can cope with complex surgical situations, such as multi-directional traction of a single finger to correct complex fracture displacement, or multiple fixation of different segments of the limb to completely suppress rotational movement. This gives the device a high degree of adaptability and stability, and can meet the needs of the surgical spectrum from simple fixation to complex reconstruction.

[0017] The finger traction device integrates a traction safety management module, which is connected in series between the finger sleeve and the first beaded chain to sense and manage traction force. The traction safety management module includes: a sensing unit for real-time monitoring of traction force; and a force limiting unit, communicatively connected to the sensing unit, which includes a user interface, a control circuit, and a braking mechanism driven by the control circuit. The user interface is used to set and display the upper limit threshold of traction force. When the traction force monitored by the sensing unit reaches or exceeds the threshold, the control circuit triggers the braking mechanism to perform a limiting action. The limiting action includes issuing an alarm and / or driving the braking mechanism to clamp and brake the first beaded chain to prevent the traction force from increasing.

[0018] This technical solution integrates a traction force safety management module connected in series between the finger cot and the first bead chain, constructing an intelligent traction safety system that combines real-time monitoring, threshold warning, and active intervention. The sensing unit in this module can sense and quantify the actual traction force acting on the finger, overcoming the uncertainty and risk inherent in traditional methods that rely on the doctor's tactile experience. Its force limit unit allows doctors to preset a scientifically sound upper limit for safe traction force based on the patient's individual condition through a user interface. When the traction force approaches or exceeds this threshold, the system can instantly trigger a braking mechanism to clamp the bead chain, thereby minimizing the risk of iatrogenic traction damage to nerves, blood vessels, and soft tissues caused by excessive traction force. Simultaneously, the system's audible and visual alarm function provides doctors with immediate warnings of exceeding limits, further enhancing the safety of the surgical environment. This design upgrades upper limb surgical traction from a purely experience-based "open-loop" operation to a data-driven, safety-redundant "closed-loop" automatic control, improving the controllability, safety, and standardization of the surgery.

[0019] The toothed groove is provided on both sides of the operating plate and at one end connected to the support adjustment plate; the toothed groove is provided on both sides and at the free end of the support adjustment plate; the toothed groove is provided at the end of the base plate away from the operating plate.

[0020] In this technical solution, by optimizing the spatial distribution of the toothed grooves on the base unit, connection points are set on both sides and ends of the operating plate, both sides and free ends of the support adjustment plate, and the far end of the base plate, forming a three-dimensional anchor point network covering the side, top, and far end of the device. This allows doctors to apply traction or fixation force from almost any spatial direction, providing the necessary structural support for achieving true three-dimensional repositioning and fixation.

[0021] The base unit also includes a support adjustment unit, which includes a plurality of spaced strip protrusions fixed to the base plate. Adjacent strip protrusions form slots, and the free end of the support adjustment plate can be selectively inserted into different slots to adjust the tilt angle of the operation plate.

[0022] This technical solution provides a support adjustment scheme that is simple in structure, low in cost, and stable and reliable. Multiple discrete slots are formed by strip-shaped protrusions. The free end of the support adjustment plate can be inserted into different slots to quickly change the tilt angle of the operating plate. This stepped adjustment method has clear levels, is simple to operate, and has a stable lock. It is particularly suitable for clinical application scenarios that require rapid switching between different standard surgical positions.

[0023] The base unit further includes a support adjustment unit, which includes a slide rail disposed on the base plate and a slider slidably disposed within the slide rail and lockable. The free end of the support adjustment plate is supported on the slider. By moving and locking the position of the slider within the slide rail, the tilt angle of the operation plate can be infinitely adjusted within a preset range.

[0024] This technical solution provides another more refined support adjustment scheme. Through the cooperation of slide rail and slider, the tilt angle of the operating panel can be infinitely adjusted within a preset range. Doctors can precisely adjust the position to any optimal angle within the preset range according to the needs of the operation. This continuous adjustment capability greatly enhances the adaptability to special surgical positions and realizes truly personalized and precise position management.

[0025] The slider is provided with a vertical locking screw, and the slide rail is a groove formed on both sides of the base plate; the bottom of the slider is provided with a protrusion that slides with the groove; the slider is provided with at least one vertical locking screw; by tightening the locking screw, its bottom end is pressed against the base plate, thereby generating friction between the slider and the groove and fixing it.

[0026] In this technical solution, a vertical frictional force is generated by rotating the locking screw, thereby firmly locking the slider in any position of the groove. This mechanism ensures that even if it is subjected to external force impact during the operation, the adjusted angle will not change, thus guaranteeing the stability and safety of the operation.

[0027] The X-ray-transmitting material is a carbon fiber composite material or an acrylic material.

[0028] In this technical solution, firstly, the carbon fiber composite material has an extremely low absorption rate of X-rays, allowing for complete X-ray transmission. During intraoperative fluoroscopy, it does not produce any image artifacts or obstructions, enabling surgeons to clearly observe the anatomical structures of the surgical site and the position of internal fixation devices. Compared to traditional metal materials that are completely opaque and ordinary plastics that slightly obstruct radiation, this material ensures the clarity of fluoroscopic images, providing precise image guidance for surgical procedures and avoiding surgical errors caused by blurred images. Secondly, the carbon fiber composite material has high strength and lightweight properties. Its high strength ensures that the base unit will not deform or break when supporting the weight of the upper limb and withstanding surgical forces, guaranteeing the lifespan of the device and surgical safety. Furthermore, the X-ray-transparent acrylic material... Its low cost saves money; its lightweight design makes the device lighter, facilitating movement, handling, and repositioning by medical staff, reducing their physical burden; finally, carbon fiber composite material has excellent disinfection resistance, withstanding various disinfection methods such as high-temperature and high-pressure sterilization and chemical disinfectant wiping, without performance degradation after disinfection, meeting the core requirements for sterile use of surgical instruments, avoiding the risk of cross-infection, and ensuring that the device can be reused in multiple surgeries, reducing medical costs; although acrylic material is not as resistant to high temperature and high pressure as carbon fiber composite material, its low cost advantage allows it to be used in some work scenarios with lower disinfection requirements, and can even be used as a single-use medical consumable. Attached Figure Description

[0029] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 Assembly of the upper limb surgical support base provided in this application Figure 1 ; Figure 2 Assembly of the upper limb surgical support base provided in this application Figure 2 ; Figure 3 A schematic diagram of the fastener assembly provided in this application; Figure 4 This is a schematic diagram of the structure of the base plate according to one embodiment of this application; Figure 5 A schematic diagram of the operation panel provided in this application; Figure 6 A schematic diagram of the supporting adjustment plate provided in this application; Figure 7 This serves as a reference for the surgical use of the upper limb three-dimensional fixation and traction device provided in this application. Figure 1 ; Figure 8 A reference diagram showing the usage state of a finger on a finger support provided for this application; Figure 9 A schematic diagram of the mating structure of the base plate and the slider according to another embodiment provided in this application; Figure 10 A schematic diagram of the structure of the finger traction component according to another embodiment provided in this application; Figure 11 This serves as a reference for the surgical use of the upper limb three-dimensional fixation and traction device provided in this application. Figure 2 ; Figure 12 A schematic diagram of the imaging effect of the affected limb in the state of being fixed and tractioned by the three-dimensional fixation device of the upper limb provided in this application under X-ray fluoroscopy; Figure 13 The traction safety management module system block diagram provided in this application; Figure 14 This serves as a reference for the surgical use of the upper limb three-dimensional fixation and traction device provided in this application. Figure 3 ; Figure 15 This serves as a reference for the surgical use of the upper limb three-dimensional fixation and traction device provided in this application. Figure 4 .

[0030] List of components and reference numerals: 1. Base unit, 11. Base plate, 111. Slide groove, 12. Operation plate, 13. Support adjustment plate, 14. Toothed groove, 15. Strip protrusion, 16. Slider, 17. Locking screw; 21 Finger traction component, 211 Finger sleeve, 212 First bead chain, 22 Finger support component, 221 Finger groove, 222 Through hole, 23 Skin retraction component, 231 Traction hook, 232 Third bead chain, 24 Limb fixation component, 25 Chain rope, 26 Slipper, 27 Traction safety management module. Detailed Implementation

[0031] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0032] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0035] In the embodiments of this application, reference is made to Figures 1 to 11 This application provides a three-dimensional fixation and traction device for the upper limb. For ease of explanation and understanding, the following descriptions are based on the illustrated product structure. Of course, those skilled in the art will understand that the above structure is merely a specific example and illustrative illustration, and does not constitute a specific limitation on the technical solution provided in this application.

[0036] like Figure 1 , Figure 2 and Figure 3 As shown, the upper limb three-dimensional fixation and traction device includes a base unit 1 and a fixing sleeve. The base unit 1 includes a base plate 11, an operating plate 12, and a support adjustment plate 13. One end of the operating plate 12 is rotatably connected to the base plate 11, and the other end is rotatably connected to the support adjustment plate 13. The support adjustment plate 13 can move relative to the base plate 11, so that the operating plate 12 has multiple tilt states supported by the support adjustment plate 13 and tilted relative to the base plate 11. The base plate 11, the operating plate 12, and the support adjustment plate 13 are made of an X-ray-transparent material. Figure 4 , Figure 5 and Figure 6At least a portion of the edge of the base unit 1 shown is provided with toothed grooves 14; the fastener assembly includes at least one type of fastener, selected from: a finger traction member 21 for applying traction force to the finger, a finger support member 22 for supporting and fixing the finger, a skin retraction member 23 for retracting the skin or soft tissue, and a limb fixation member 24 for pressing and fixing the limb to the operating plate 12. The fastener can be selectively connected to the toothed grooves 14 at different positions on the base unit 1 through a connection structure including a bead chain, and is fixed by the locking action of the bead chain. After the bead chain is engaged in the toothed groove 14 and locked, it can transmit traction force or fixing force, thereby maintaining the fastener or limb in the desired position on the operating plate 12.

[0037] Specifically, the base plate 11, the operation plate 12, and the support adjustment plate 13 are preferably configured as rectangular plate structures. The base plate 11 serves as the bottom support, and its length can be greater than that of the operation plate 12 and the support adjustment plate 13. The base plate 11, the operation plate 12, and the support adjustment plate 13 can be configured as equal-width structures or the width of the base plate 11 can be slightly greater than that of the operation plate 12 and the support adjustment plate 13.

[0038] From the structure of the base unit 1, the rotatable connection between the operating plate 12, the base plate 11, and the support adjustment plate 13, along with the movement of the support adjustment plate 13 relative to the base plate 11, allows the operating plate 12 to achieve various tilt adjustments, precisely matching the differentiated positional needs of surgeries on different parts of the body, such as the fingers, wrists, forearms, and upper arms. During manufacturing, the three components can be rotatably connected via hinges or other rotating connectors. The hinges are made of stainless steel and treated with rust prevention to ensure smooth rotation during long-term surgical use. In practical applications, for example, for finger metacarpal and wrist fracture reduction surgeries often requiring a 30°-40° tilt to expose the field of vision, and elbow surgeries requiring a 50°-60° tilt for ease of operation, doctors can quickly switch tilt positions by adjusting the position of the support adjustment plate 13. This overcomes the shortcomings of traditional fixed support structures, which have a single angle and cannot adapt to multiple surgical sites. It eliminates the need for doctors to adjust their operating posture due to positional limitations, significantly reducing surgical fatigue and improving operational precision, providing a customized positional adjustment solution for delicate upper limb surgeries.

[0039] The base unit 1 is made of X-ray transparent material. When using a C-arm X-ray machine for X-ray fluoroscopy during surgery, it can avoid image artifacts and obstruction caused by metal or non-transmissive materials. Doctors can clearly observe the fracture reduction and the position of internal fixation devices without repeatedly adjusting the fluoroscopy angle, which greatly shortens the operation time and improves the safety of the operation.

[0040] The toothed groove 14 on the edge of the base unit 1 can be selectively matched with the bead chain connection structure of the fixing component set, realizing the detachable connection of the fixing component. Doctors can flexibly choose at least one fixing component such as finger traction component 21 or finger support component 22 according to the type of surgery, without having to replace the entire set of devices, thus improving the versatility and ease of use of the equipment.

[0041] The fixation kit includes a finger traction component 21, a finger support component 22, a skin retraction component 23, and a limb fixation component 24, possessing multiple core functions such as finger traction, finger support, skin retraction, and limb fixation. At least one fixation component can be selected based on surgical needs. For example, tendon repair surgery requires the simultaneous use of finger traction component 21 and finger support component 22, skin retraction component 23 for exposing the tendon location, and limb fixation component 24 for securing the forearm. Each fixation component is connected to a toothed groove 14 via a beaded chain connection structure. During assembly, simply inserting the beaded chain into the toothed groove 14 achieves locking; no additional tools are required, and a single person can complete the installation of one fixation component within seconds. After locking, the beaded chain stably transmits traction or fixation force, maintaining the limb and skin in the desired position, replacing manual traction. In traditional upper limb surgeries requiring traction and fluoroscopy, a dilemma exists: First, an assistant must manually traction and immobilize the affected limb at the operating table; second, when using a C-arm X-ray machine for fluoroscopy, scattered X-rays inevitably irradiate both the assistant and the patient. Even with lead aprons, their heads, hands, and other areas may still be exposed, and the long-term cumulative radiation dose poses a serious threat to the health of both the surgeon and the patient. Taking finger fracture surgery as an example, traditionally, 1-2 assistants are needed for continuous traction. With this device, the surgeon can operate hands-free after installing the finger traction component 21 and adjusting the traction force. Medical staff can remotely control the C-arm X-ray machine from any position in the operating room, while the affected limb remains in an absolutely stable repositioned and immobilized state under the device's support. This solves the problems of unstable traction force due to human fatigue, radiation exposure, and manpower shortages. At the same time, the traction force is precisely transmitted through the beaded chain, avoiding the problem of unquantifiable standards for manual traction force and reducing the risk of insufficient or excessive traction. In robotic surgery, this device provides continuous and uninterrupted stable fixation, meeting the stringent requirements of robotic surgery for positional stability and ensuring the continuity and precision of the robotic surgical procedure.

[0042] In a preferred embodiment, such as Figure 3As shown, the finger traction device 21 includes a finger sleeve 211 for fitting and securing to the finger, and a first beaded chain 212 connected to the finger sleeve 211 and for connecting to the toothed groove 14. During manufacturing, the finger sleeve 211 can be made of nylon fiber woven into a mesh structure to ensure breathability while tightly binding the finger. The finger traction device 21 can be equipped with finger sleeves suitable for adults and finger sleeves suitable for children. In use, the finger sleeve 211 is slipped onto the finger, the first beaded chain 212 is pulled to apply traction, and then the first beaded chain 212 is engaged in the toothed groove 14. By adjusting the connection position of the first beaded chain 212 in the toothed groove 14, multi-directional traction can be achieved to correct the rotation and lateral displacement of the fracture. Compared to traditional manual traction, this structure can precisely maintain traction force, avoiding weakening or fluctuation of traction force due to human fatigue, and eliminates the need for an assistant to continuously maintain the traction posture, allowing the surgeon to focus on core operations such as fracture reduction. Furthermore, the finger sleeve 211 is made of a flexible material, which avoids pressure damage to the patient's finger skin, improving patient comfort.

[0043] In a preferred embodiment, such as Figure 3 As shown, the finger support 22 has a finger groove 221 for accommodating and supporting the finger, and a through hole 222 for the second beaded chain to pass through. Specifically, the finger support 22 is preferably D-shaped, with a flat bottom to facilitate flat contact with the operating plate 12 and ensure placement stability, an arc-shaped upper part that is concave to form the finger groove 221, and a through hole 222 in the middle for the second beaded chain to pass through. Figure 8The diagram shows a reference image illustrating the finger's position on the finger support. The finger groove 221 is designed to fit the finger's contour, allowing the affected finger to be stably placed within it, effectively preventing finger displacement or movement during surgery. The through-hole 222, through which the second bead chain passes, ensures a secure connection between the finger support 22 and the base unit 1, while also preventing the second bead chain from interfering with the finger within the finger groove 221, ensuring the surgical procedure remains unaffected. During assembly, at least one second bead chain passes through the through-hole 222 and engages with the toothed groove 14 of the operating plate 12, fixing the finger support 22 in a preset position on the operating plate 12. During use, the affected finger is placed within the finger groove 221, which conforms to the finger's curve, preventing finger displacement during surgery. When used in conjunction with the finger traction component 21, it provides dual fixation through traction and support. For example, in metacarpal fracture surgery, the finger support 22 supports the finger to prevent it from drooping, while the finger traction component 21 provides axial traction force, creating a stable platform for Kirschner wire fixation. This forms a subsystem specifically designed for minimally invasive reduction and temporary fixation of metacarpal fractures. The specific procedure is as follows: the affected finger is placed in the finger groove 221, a nylon finger sleeve 211 is put on, traction is applied, and the fracture is reduced using the finger sleeve 211 and bead chain, overcoming shortening displacement. Under continuous traction, the finger groove 221 acts as a solid base, preventing angular or rotational displacement at the fracture site. The surgeon can then comfortably perform Kirschner wire internal fixation and other procedures while maintaining both traction and fixation. The advantage of this combination is that it simulates and solidifies a complex action that originally required an assistant to perform manually, breaking it down into two independently operable yet synergistically functional components.

[0044] In a preferred embodiment, such as Figure 3 As shown, the skin retractor 23 includes a traction hook 231 for retracting skin or soft tissue, and a third beaded chain 232 connected to the traction hook 231 and for connecting to the toothed groove 14. During manufacturing, the traction hook 231 can be forged from medical-grade stainless steel, with the hook tip ground into a rounded arc shape. In use, the surgeon hooks the traction hook 231 onto the edge of the surgical incision, pulls the third beaded chain 232 to retract the skin to a suitable extent, and then locks the third beaded chain 232 into the toothed groove 14 for locking and fixation. Compared to traditional manual incision retraction using forceps or hooks, this structure can stably maintain the incision opening range, avoiding incision closure or changes in retraction range due to fatigue during manual operation, providing a clear and stable operating field of view for the surgery, while reducing the manpower input of assistants, allowing the surgical team to cooperate more efficiently.

[0045] In a preferred embodiment, such as Figure 3As shown, the limb fixation component 24 includes at least one fourth beaded chain. In use, the fourth beaded chain is looped around the upper limb, and both ends are engaged with the sides of the operating plate 12 for locking and fixation. Compared to the difficulty in adjusting the tightness of traditional fixation straps, the beaded chain's sliding beads 26 locking structure can precisely control the fixation force, ensuring that the limb does not shift and avoiding compression of blood vessels that could impede blood circulation. Through the connection between the fourth beaded chain and the toothed groove 14, the patient's forearm, upper arm, fingers, and other parts can be tightly pressed and fixed onto the operating plate 12. Especially in robot-assisted surgery, this avoids the problem of upper limb displacement causing the robot's surgical path planning to fail, ensuring the continuity and precision of the robotic surgery and improving surgical efficiency.

[0046] In a preferred embodiment, such as Figure 3As shown, the beaded chain includes a chain cord 25 and a plurality of sliding beads 26 slidably sleeved on the chain cord 25. The chain cord 25 is used to engage with the toothed groove 14 and is locked in place by the sliding beads 26. The chain 25 is used to embed into the toothed groove 14 for initial positioning. The slidable ball 26, after the chain 25 is inserted into the toothed groove 14, utilizes its physical property that its diameter is larger than the groove opening to achieve reliable locking and fixation. Compared with traditional knot fixation or buckle fixation, the advantages of this structure are: First, the fixation is stronger. The locking cooperation between the ball 26 and the teeth of the toothed groove 14 can effectively resist the tension generated during the operation and prevent the fixation from slipping. Second, the operation is more convenient. Doctors only need to slide the ball 26 to adjust the force, without the need for cumbersome knot tying or buckle disassembly. Especially when it is necessary to adjust the traction force or the degree of retraction during the operation, the position of the ball 26 can be quickly adjusted to change the fixation point, which greatly improves the operation efficiency. Third, the adaptability is wider. The flexibility of the chain 25 allows it to adapt to different orientations of the toothed groove 14, while the sliding nature of the ball 26 makes it easy to adjust the locking position, ensuring that the connection at different parts and angles remains stable. The following explains the locking and fixing principle of the bead chain: Taking the bead chain being locked into the toothed groove 14 of the operating plate 12 as an example, when the chain 25 is pressed into the toothed groove 14, the group of sliding beads located on the back side (i.e., below) of the operating plate 12 is effectively locked because the diameter of the sliding beads 26 is larger than the opening of the toothed groove 14, and they cannot pass through the groove. At the same time, these sliding beads 26 are also blocked by the knot at the end of the chain 25. Therefore, the group of sliding beads on the back side is completely locked and cannot move in any direction. This mechanism ensures that once the bead chain is locked, it will not accidentally come loose from the toothed groove 14, providing a solid foundation for traction and fixation. In contrast, the sliding beads 26 located on the front side (i.e., above, the side facing the operator) of the operating plate 12, although they themselves cannot pass through the toothed groove 14, can slide freely toward the fixing body (such as the traction hook 231, finger sleeve 211). This characteristic is the key to achieving fine adjustment. The tension fine-tuning method based on the above principle is as follows: When it is necessary to increase the traction or pulling force, remove the chain 25 from the currently locked toothed groove 14, and move several sliding balls 26 located on the front side of the operating plate 12 to the back side of the operating plate 12. This operation reduces the length of the free section of the chain 25 on the front side of the operating plate 12. Pull the chain 25 in the direction that needs tension. At this time, since the free section of the chain 25 on the front side has become shorter, the tension can be felt immediately. After the chain 25 reaches the expected tension, lock it back into the toothed groove 14. At this time, a large number of sliding balls 26 located on the back side are firmly locked, thereby locking the new and greater tension. When it is necessary to reduce the traction or pulling force, similarly, first remove the chain 25 from the toothed groove 14, and manually move several sliding balls 26 located on the back side of the operating plate 12 to the front side of the operating plate 12.This operation increases the length of the free section of the chain 25 on the front side of the operating plate 12, allowing for slack. The chain 25 is then re-engaged into the toothed groove 14. Because the free chain 25 on the front side is longer, the system tension naturally decreases. This adjustment mechanism is intuitive, precise, and reliable. The doctor presets the effective working length of the chain 25 by moving the slider 26, and then executes and locks the tension through a locking action. This forms a discrete, quantifiable fine-tuning method, enabling precise tension control on a simple mechanical structure, thus improving the controllability and adaptability of the device.

[0047] like Figure 7 As shown, a schematic diagram illustrates the usage state of the hand on the control panel 12. Specifically, it demonstrates how two limb fixation members 24 secure the hand, with both ends of the two limb fixation members 24 locked within the toothed grooves 14 of the control panel 12. It also shows the state of the finger traction member 21 tractioning the fingers, with the first bead chain 212 of the finger traction member 21 locked within the toothed groove 14 at the end of the control panel 12. (See diagram for reference.) Figure 11 As shown, a reference diagram is provided showing the usage status of the affected limb on this device during clinical surgery.

[0048] It should be noted that the second and fourth bead chains can both be pure bead chain structures consisting of chain cord 25 and slip bead 26, without other functional terminals. This design has high versatility and interchangeability; the two can be used interchangeably, simplifying operation and reducing maintenance costs. The knots at both ends limit the slip bead 26, preventing it from slipping off the chain cord 25.

[0049] In a preferred embodiment, there are multiple finger traction components 21, skin retraction components 23, and limb fixation components 24. The design of multiple finger traction components 21 is suitable for multi-directional traction in multi-finger fracture surgery. Multiple finger traction components 21 are respectively connected to the toothed grooves 14 on both sides of the base unit 1, applying traction forces in different directions to correct complex displacements and meet the multi-dimensional needs of delicate surgery. The use of multiple skin retraction components 23 allows for the installation of one skin retraction component 23 in each of the four directions (up, down, left, and right) of the incision in surgeries with larger skin incisions. By adjusting the length of the beaded chains of each skin retraction component 23, the incision can be opened evenly, avoiding the problem of partial closure caused by manual incision retraction. This provides ample operating space for the surgery, especially when implanting internal fixation devices such as plates, allowing for clear observation of the bone surface and improving surgical precision. The design of multiple limb fixation devices 24 is suitable for different parts of the upper arm and forearm in adults, or for the robust limbs of obese patients. One limb fixation device 24 can be installed at the proximal, middle, and distal ends of the limb. Multi-point fixation ensures that the limb does not rotate or shift. For example, in robot-assisted upper arm surgery, three limb fixation devices 24 can fix the root, middle, and elbow of the upper arm respectively to prevent slight limb movement during surgery from causing the robot's surgical path to fail. Therefore, in this application, by expanding the number of finger traction devices 21, skin retraction devices 23, and limb fixation devices 24, the device can cope with complex surgical situations, such as multi-directional traction of a single finger to correct complex fracture displacement, or multiple fixations of different segments of the limb to completely suppress rotational movement. This gives the device a high degree of adaptability and stability, and can meet the needs of a spectrum of surgeries from simple fixation to complex reconstruction.

[0050] In one specific embodiment, such as Figure 3 As shown, the traction component 21 can integrate only the finger sleeve 211 and the first bead chain 212, resulting in a simple structure and low cost. Currently, the traction force during fracture reduction relies entirely on the surgeon's feel and personal experience. The assistant adjusts the force based on the surgeon's verbal instructions, which is a very subjective and rough process. The lack of objective data can lead to insufficient or excessive traction. Therefore, in a preferred embodiment, as... Figure 10 As shown, a traction safety management module 27 can be integrated on the finger traction member 21. The traction safety management module 27 is connected in series between the finger sleeve 211 and the first bead chain 212 to sense and manage the traction force. The traction safety management module 27 includes a sensing unit and a force limiting unit. The sensing unit is used to monitor the traction force in real time. The force limiting unit is communicatively connected to the sensing unit and includes a user interface, a control circuit, and a braking mechanism driven by the control circuit. The user interface is used to set and display the upper limit threshold of the traction force. When the traction force monitored by the sensing unit reaches or exceeds the threshold, the control circuit triggers the braking mechanism to perform a limiting action. The limiting action includes issuing an alarm and / or driving the braking mechanism to clamp and brake the first bead chain to prevent the traction force from increasing.

[0051] refer to Figure 13 The diagram shows a system block diagram of the traction safety management module. The traction safety management module 27 is a compact mechatronic system integrated into the finger traction component 21. Its core function is to act as an intelligent joint in the traction transmission path, ensuring that the surgical traction force remains within a safe range through closed-loop control of sensing, decision-making, and execution. This module can be encapsulated in a lightweight, robust, and sterilizable housing connected in series between the finger sleeve 211 and the chain of the first beaded chain 212. All traction force applied to the finger must flow through the sensing unit inside the module, ensuring direct and accurate measurement. To meet the sterility and portability requirements of the operating room, the module is preferably powered by a built-in rechargeable lithium battery. Waterproof wireless charging coils or magnetic charging contacts can be installed on the housing for contactless charging, avoiding openings in the housing and thus meeting the sealing requirements for high-temperature, high-pressure steam sterilization. The sensing unit can be a miniature force sensor, preferably a strain gauge sensor or a miniature thin-film pressure sensor, precisely mounted on a force-bearing base inside the module. When traction force is applied to this base, it causes a slight deformation of the sensor, generating an electrical signal proportional to the force value, thus achieving high-precision, real-time monitoring of the traction force. The force limiting unit can be an intelligent control center with a microprocessor at its core, where the user interface is preferably a miniature display screen and several waterproof physical buttons integrated on the module housing. The display screen is used to display the current traction force value and the preset safety threshold in real time. The doctor sets and adjusts the threshold using the buttons. As a more preferred embodiment, the module can also integrate a low-power Bluetooth module, providing a graphical and richer user interface through wireless connection with a tablet computer or dedicated display in the operating room. The control circuit can be a microcontroller responsible for receiving the electrical signals from the sensing unit, converting them into digital force values, and comparing them with the preset threshold in real time. Once the force value is determined to exceed the limit, the microcontroller immediately issues execution commands to the braking mechanism and alarm unit. The braking mechanism is the key component for limiting force. A preferred embodiment is an electromagnetic clamping mechanism, which includes a miniature electromagnet and a friction block linked to it. Under normal circumstances, the electromagnet is not energized, the friction block is separated from the passing chain rope, and the chain rope can move freely. When a trigger signal is received from the control circuit, the electromagnet is instantly energized, generating a strong magnetic force that drives the friction block to press firmly against the chain rope. The immense frictional force locks it in place, physically preventing further increase in traction force and achieving fuse-type protection. The alarm function is achieved through a combination of audible, visual, and / or vibration alarms driven by the control circuit. Specifically, the module can integrate a miniature buzzer, a high-brightness LED indicator, and / or a vibration motor. When the traction force exceeds the limit, all three can be activated simultaneously or selectively, issuing a multimodal warning that cannot be ignored, ensuring the operator can notice immediately.

[0052] In a preferred embodiment, such as Figures 4 to 6 As shown, the two sides of the operating plate 12 and the end connected to the support adjustment plate 13 are provided with toothed grooves 14; the two sides and the free end of the support adjustment plate 13 are provided with toothed grooves 14; the end of the base plate 11 away from the connection with the operating plate 12 is provided with toothed grooves 14. By optimizing the spatial distribution of the toothed grooves 14 on the base unit 1, connection points are set on both sides and the end of the operating plate 12, both sides and the free end of the support adjustment plate 13, and the distal end of the base plate 11, forming a three-dimensional anchor point network covering the side, top, and distal ends of the device. This allows doctors to apply traction or fixation force from almost any spatial direction, providing the necessary structural support for achieving true three-dimensional repositioning and fixation. The toothed grooves 14 on both sides of the operating plate 12 and the end connected to the support adjustment plate 13 allow fixation components such as the finger traction component 21, the finger support component 22, and the limb fixation component 24 to be connected from the side (corresponding to the two sides of the upper limb) and the end (corresponding to the distal end of the upper limb) of the operating plate 12. For example, the toothed grooves 14 on both sides of the operating plate 12 can be used to connect limb fixation devices 24 to fix the limb from both sides of the upper limb; the toothed grooves 14 at the end of the operating plate 12 can be used to connect finger traction devices 21 to provide distal traction for the affected finger. This distribution method can fully cover the fixation and traction needs of the upper limb on the operating plate 12, avoiding difficulties in connecting fixation devices due to insufficient space for the toothed grooves 14. Toothed grooves 14 are provided on both sides and the free end (i.e., the end away from the connection with the operating plate 12) of the support adjustment plate 13. When the support adjustment plate 13 supports the operating plate 12 in an inclined state, it can be used to connect skin retraction devices 23 or limb fixation devices 24. For example, during upper arm surgery, the toothed grooves 14 at the free end of the support adjustment plate 13 can connect to the skin retraction device 23 to retract the skin from the distal end of the surgical incision, providing a wider field of vision for the surgery. At the same time, the toothed grooves 14 on both sides of the support adjustment plate 13 can connect to the limb fixation devices 24 to further fix the upper limb and improve postural stability. Furthermore, when the operating plate 12 and the support adjustment plate 13 are fully extended to a horizontal or near-horizontal state, the support adjustment plate 13 can serve as a continuation of the operating plate 12 in a near-horizontal or horizontal direction. Together, they form a support structure for placing and fixing the limb. At this time, the toothed groove 14 on the support adjustment plate 13 also facilitates fixation and traction at the distal end of the limb. The toothed groove 14 is provided at the end of the base plate 11 away from the end connected to the operating plate 12, which can be used to connect the distal end of the skin retraction member 23 or the limb fixation member 24. For example, during forearm surgery, the toothed groove 14 at the end of the base plate 11 can be connected to the skin retractor 23 to retract the skin from the proximal end of the surgical incision. This forms a bidirectional retraction effect with the skin retractor 23 on the support adjustment plate 13 or the operating plate 12, ensuring that the incision is fully opened. At the same time, the toothed groove 14 at this position can also be connected to the distal end of the limb fixation member 24, forming a dual fixation effect with the limb fixation member 24 on the operating plate 12, combining proximal and distal fixation, further improving the stability of the upper limb fixation.

[0053] Regarding the method of adjusting the tilt angle of the control panel 12, in a preferred embodiment, such as... Figure 1 and Figure 2 As shown, the base unit 1 also includes a support adjustment unit, which includes multiple spaced strip-shaped protrusions 15 fixed to the base plate 11. Adjacent strip-shaped protrusions 15 form slots, and the free end of the support adjustment plate 13 (i.e., the end furthest from the operating plate 12) can selectively engage with different slots to adjust the tilt angle of the operating plate 12. During processing, the strip-shaped protrusions 15 are fixed to the base plate 11 by welding or bolts. Adjacent strip-shaped protrusions 15 are spaced apart to form slots according to the requirement that they can all engage with the free end of the support adjustment plate 13. The height of the protrusions is set to ensure that there is no shaking after the free end of the support adjustment plate 13 is engaged. In use, the free end of the support adjustment plate 13 can be selectively inserted into different slots. When inserted into the slot closest to the operating plate 12, the operating plate 12 tilts at a preset angle, such as 20° for minimally invasive wrist surgery. When inserted into the farthest slot, it tilts at another preset angle, such as 60° for elbow surgery. The intermediate slots correspond to 30°, 40°, 50°, or other suitable angles, covering the angle requirements of multiple upper limb surgeries. This adjustment method offers high angle adjustment precision. The fixed position of the slots ensures that the tilt angle of the operating plate 12 remains stable at the preset value, avoiding the problem of easy angle shift in traditional adjustable support structures. Moreover, it is highly convenient to operate. Doctors only need to remove the free end of the support adjustment plate 13 from the current slot and insert it into the target slot to quickly complete the angle adjustment without the need for additional tools. This can significantly save operation time, especially when the patient's position needs to be adjusted temporarily during surgery.

[0054] Regarding the structure of the support adjustment unit, in another preferred embodiment, such as Figure 9As shown, the support adjustment unit includes a slide rail mounted on the base plate 11 and a slider 16 slidably mounted within the slide rail and lockable. The free end of the support adjustment plate 13 is supported on the slider 16. By moving and locking the position of the slider 16 within the slide rail, the tilt angle of the operation plate 12 can be infinitely adjusted within a preset range. In this embodiment, another more refined support adjustment scheme is provided. Through the cooperation of the slide rail and the slider 16, the tilt angle of the operation plate 12 can be infinitely adjusted within a preset range. Doctors can precisely adjust the patient's position to any optimal angle within the preset range according to the needs of the surgery. This continuous adjustment capability greatly enhances the adaptability to special surgical positions and achieves truly personalized and precise position management. In use, the doctor pushes the slider 16 to move within the slide rail. The free end of the support adjustment plate 13 changes height as the slider 16 moves, and the tilt angle of the operation plate 12 changes accordingly. For example, when a 25° tilt angle is needed, the slider 16 is moved to the corresponding position without being restricted by the fixed slot. After adjustment, the slider 16 is locked to maintain angle stability. Especially in robot-assisted surgery, the angle of the operation plate 12 can be finely adjusted according to the position of the robot surgical arm to ensure precise surgical path and avoid surgical path failure due to positional deviation. In addition, through Figure 9 The embodiment shown with one slider 16 fully meets the limiting support requirements for the support adjustment plate 13. As an alternative embodiment, two sliders 16 can be set side by side, forming a slot so that the free end of the support adjustment plate 13 can be engaged in the slot, improving the limiting reliability. When it is necessary to adjust the tilt angle, the two sliders 16 can be slid to the appropriate position, and the spacing of the slots can also be adjusted.

[0055] Furthermore, such as Figure 9As shown, the slide rail is a groove 111 formed on both sides of the base plate 11; the bottom of the slider 16 is provided with a protrusion that slides in cooperation with the groove 111; the slider 16 is provided with at least one vertical locking screw 17; by tightening the locking screw 17, its bottom end is pressed against the base plate 11, thereby generating friction between the slider 16 and the groove 111 and fixing it. The slide rail is designed as grooves 111 on both sides of the base plate 11. During processing, it can be integrally formed with the base plate 11, simplifying the manufacturing process and ensuring the structural integrity of the grooves 111 and the base plate 11. This avoids the loosening and misalignment problems that occur with traditional independent slide rails after long-term use. The protrusion at the bottom of the slider 16 slides in conjunction with the groove 111. During processing, the protrusion is integrally formed at the bottom of the slider 16. The convex-concave fit structure between the protrusion and the groove 111 restricts the vertical displacement of the slider 16, preventing it from falling out of the groove 111 during adjustment and improving assembly and usage safety. Preferably, the protrusion and the groove 111 can also be configured as a dovetail-shaped convex-concave fit structure, forming simultaneous vertical and width-direction limiting. Furthermore, a threaded hole can be provided at each end of the slider 16, and a locking screw 17 can be screwed into the threaded hole. The lower end of the locking screw 17 corresponds to the bottom of the groove 111. When tightened, the locking screw 17 abuts against the bottom of the groove 111. During surgery, when the surgeon moves the slider 16 to adjust the angle of the control panel 12, the protrusion at the bottom of the slider 16 slides smoothly along the grooves 111 on both sides of the base plate 11. The guiding effect of the grooves 111 on both sides makes the movement trajectory of the slider 16 more precise, avoiding the tilting and jamming problems of the slider 16 caused by the traditional single slide rail. Even if the force is uneven when pushing the slider 16, it can ensure that the angle of the control panel 12 is adjusted linearly, which is suitable for the needs of slow and precise position adjustment in complex surgeries. After the slider 16 moves to the target position, the surgeon only needs to tighten the locking screw 17 by hand.

[0056] In a preferred embodiment, the X-ray-transmitting material is a carbon fiber composite material. For example, carbon fiber precursor and bisphenol epoxy resin are used in the processing, and the base plate 11, operating plate 12, and support adjustment plate 13 are manufactured through a hot pressing process. The carbon fiber precursor, as a reinforcement, provides extremely high specific strength and specific modulus, ensuring that the plate can withstand the weight of the upper limb and the traction and pressure generated during surgery while maintaining a lightweight design, avoiding bending deformation. The bisphenol epoxy resin, as the matrix, has good wettability and adhesion to the carbon fiber, exhibits excellent mechanical properties after curing, is fatigue-resistant and creep-resistant, and meets the chemical stability requirements of medical materials. The hot pressing process can fully impregnate and cure the carbon fiber precursor and epoxy resin under specific temperature and pressure. Plates manufactured through this process have the characteristics of uniform fiber distribution, low porosity, and strong interlayer bonding, thus endowing them with excellent and consistent mechanical properties. First, carbon fiber composite materials have extremely low X-ray absorption, allowing for complete X-ray transmission. During intraoperative fluoroscopy, there are no image artifacts or obstructions, enabling surgeons to clearly observe the anatomical structures of the surgical site and the position of internal fixation devices. Compared to traditional metal materials that are completely opaque and ordinary plastics that only slightly obstruct X-rays, this material ensures clear fluoroscopic images, providing precise visual guidance for surgical procedures and avoiding surgical errors caused by blurred images. Second, carbon fiber composite materials possess high strength and lightweight characteristics. High strength ensures that the base unit 1 will not deform or break when supporting the weight of the upper limb and withstanding surgical forces, guaranteeing the device's lifespan and surgical safety. Lightweight design makes the overall device lighter, facilitating movement, handling, and repositioning by medical staff, reducing their physical burden. Finally, carbon fiber composite materials have excellent sterilization resistance, withstanding various sterilization methods such as high-temperature and high-pressure sterilization and chemical disinfectant wiping, without performance degradation after sterilization. This meets the core requirements for aseptic use of surgical instruments, avoiding the risk of cross-infection and ensuring the device can be reused in multiple surgeries, reducing medical costs. Figure 12 The diagram illustrates the imaging effect of an affected limb positioned on a three-dimensional upper limb fixation and traction device under X-ray fluoroscopy. When the affected limb is placed on this device, made of carbon fiber composite material, for intraoperative X-ray fluoroscopy, the high X-ray transmittance of the base plate, operating plate, and support adjustment plate results in only the upper limb skeletal structure being displayed in the generated medical images, with virtually no artifacts or obstructions caused by the device itself. This imaging effect directly demonstrates that this device, while providing stable support for surgery, effectively solves the long-standing technical problem of traditional metal support frames severely interfering with intraoperative imaging, providing surgeons with a clear field of vision for precise surgical procedures.

[0057] In another alternative embodiment, the X-ray-transmitting material can also be acrylic. Acrylic is inexpensive, but it is not as resistant to high temperature and high pressure as carbon fiber composites. However, due to its low cost, it can be used in some work scenarios with low disinfection requirements, and can even be used as a disposable medical consumable.

[0058] Furthermore, to more clearly demonstrate the usage process of the upper limb three-dimensional fixation and traction device of this application, such as... Figure 14 and Figure 15 As shown, two usage modes of the upper limb three-dimensional fixation and traction device during surgery are also provided.

[0059] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0060] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0061] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A three-dimensional fixing and traction device for upper limbs, characterized in that, The application relates to a base unit, a fixing component set and a traction force safety management module. The base unit comprises a bottom plate, an operation plate and a support adjusting plate, one end of the operation plate is rotationally connected with the bottom plate, and the other end is rotationally connected with the support adjusting plate. The support adjusting plate can move relative to the bottom plate, so that the operation plate has multiple inclined states supported by the support adjusting plate and inclined relative to the bottom plate; the bottom plate, the operation plate and the support adjusting plate are made of X-ray transparent material; at least part of the edge of the base unit is provided with a tooth-shaped groove. The fixing component set comprises at least one type of fixing component selected from a finger traction component for applying traction to a finger, a finger supporting component for supporting and fixing a finger, a skin retractor for retracting skin or soft tissue and a limb fixing component for pressing and fixing a limb on the operation plate. The fixing component is selectively connected with the tooth-shaped groove at different positions of the base unit through a connecting structure comprising a bead chain, and is fixed through the clamping action of the bead chain; after being clamped into the tooth-shaped groove and clamped, the bead chain can conduct traction or fixing force, so as to maintain the fixing component, the limb, the skin or the soft tissue at the expected position on the operation plate.

2. The three-dimensional fixing and traction device for upper limbs according to claim 1, characterized in that, The finger traction component comprises a finger sleeve for sleeving and binding on a finger, and a first bead chain connected with the finger sleeve and used for connecting with the tooth-shaped groove. The finger supporting component is provided with a finger groove for accommodating and supporting a finger, and a through hole for the second bead chain to pass through. The skin retractor comprises a traction hook for retracting skin or soft tissue, and a third bead chain connected with the traction hook and used for connecting with the tooth-shaped groove. The limb fixing component comprises at least one fourth bead chain.

3. The three-dimensional fixing and traction device for upper limbs according to claim 1 or 2, characterized in that, The bead chain comprises a chain rope and multiple sliding beads slidably sleeved on the chain rope, the chain rope is used for clamping into the tooth-shaped groove, and the clamping is fixed through the sliding beads.

4. The three-dimensional fixing and traction device for upper limbs according to claim 1 or 2, characterized in that, The number of the finger traction component, the skin retractor and the limb fixing component is multiple.

5. The upper limb three-dimensional stereoscopic fixation traction device according to claim 2, characterized in that, The finger traction component is integrated with a traction force safety management module, the traction force safety management module is connected in series between the finger sleeve and the first bead chain to sense and manage the traction force, and the traction force safety management module comprises: A sensing unit for monitoring the traction force in real time; A force limiting unit in communication connection with the sensing unit, comprising a user interface, a control circuit and a brake mechanism driven by the control circuit; the user interface is used for setting and displaying an upper threshold of the traction force; when the traction force monitored by the sensing unit reaches or exceeds the threshold, the control circuit triggers the brake mechanism to perform a limiting action; The limiting action comprises issuing an alarm and / or driving the brake mechanism to clamp the first bead chain to prevent the traction force from increasing.

6. The upper limb three-dimensional stereoscopic fixation traction device according to claim 1, characterized in that, Both sides of the operation plate and one end connected with the support adjusting plate are provided with the tooth-shaped groove; Both sides and the free end of the support adjusting plate are provided with the tooth-shaped groove; The end of the bottom plate away from the operation plate is provided with the tooth-shaped groove.

7. The upper limb three-dimensional stereoscopic fixation traction device according to claim 1, characterized in that, The base unit further comprises a support adjusting unit, which comprises a plurality of spaced-apart strip-shaped protrusions fixed to the bottom plate, and a clamping groove is formed between adjacent strip-shaped protrusions, and the free end of the support adjusting plate can be selectively clamped into different clamping grooves to achieve inclination angle adjustment of the operation plate.

8. The upper limb three-dimensional stereoscopic fixation traction device according to claim 1, characterized in that, The base unit further comprises a support adjusting unit, which comprises a slide rail arranged on the bottom plate, and a slide block arranged in the slide rail and capable of being locked; the free end of the support adjusting plate is supported on the slide block, and by moving and locking the position of the slide block in the slide rail, the inclination angle of the operation plate can be steplessly adjusted within a preset range.

9. The upper limb three-dimensional stereoscopic fixation traction device according to claim 8, characterized in that, The slide rail is a slide groove opened on the two side edges of the bottom plate; the bottom of the slide block is provided with a protrusion in sliding cooperation with the slide groove; at least one vertical locking screw is arranged on the slide block; by screwing the locking screw, the bottom end thereof is pressed against the bottom plate, so that frictional force is generated between the slide block and the slide groove to fix the same.

10. The upper limb three-dimensional stereoscopic fixation traction device according to claim 1, characterized in that, The X-ray permeable material is a carbon fiber composite material or an acrylic material.

Images