Spine fixing device convenient to sit up

Abstract

The invention relates to the field of medical instruments, in particular to a spine fixing device convenient to sit up, which comprises a back plate, a swing rod, an adjusting mechanism and a pneumatic telescopic assembly. The adjusting mechanism comprises a gas compression assembly and a channel assembly, the swing rod compresses gas, and the gas flows into the channel assembly in one direction to drive the pneumatic telescopic assembly to stretch to assist the patient to sit up. The gas compression assembly is provided with a gas chamber, and the transmission assembly penetrates through the gas chamber and is connected with the channel assembly. The transmission assembly comprises a lead screw mechanism and a bevel gear mechanism, and efficient energy conversion is achieved. The channel assembly comprises a first channel, a second channel and a third channel and is provided with a cover plate and an isolation plate, gas flow is optimized, and efficiency is improved. The volume of the first channel decreases progressively, and the tail end is provided with an arc part to ensure stable gas transmission. The channel assembly comprises a containing groove for containing the pneumatic telescopic assembly, and the design is compact. The device is driven by leg strength, is light and efficient, is suitable for sitting-up assistance of patients with spine damage, and remarkably improves the living quality of the patients.

Description

Technical Field

[0001] The invention relates to the field of medical instruments, and in particular to a spinal fixation device which is convenient for sitting up. Background Art

[0002] Patients with spinal injuries face many challenges during rehabilitation, one of which is the difficulty in sitting up independently while wearing a spinal fixation device. Traditional spinal fixation device designs often focus on providing stability and support for the spine, but ignore the basic needs of patients in daily life - such as the ability to sit up from a lying position. This not only limits the patient's range of motion, but may also lead to dependence on care from others, affecting their independence and quality of life.

[0003] At present, there are three main solutions for assisting patients with spinal injuries to sit up: one is a transmission mechanism that relies on arm strength, another is a transmission mechanism that relies on leg strength, and the other is an auxiliary device driven by a motor. However, both methods have their inherent limitations.

[0004] The arm-driven transmission mechanism is based on the assumption that the patient's arms have sufficient strength to drive the sitting-up action, but the reality is that many patients with spinal injuries suffer from upper limb dysfunction, which greatly reduces the effectiveness of this design in practical applications.

[0005] Although the leg-driven design solves the problem of insufficient upper limb strength to a certain extent, it also has limitations. For example, when patients try to sit up halfway, they need to continue to exert force in their legs to maintain a sitting position, which is a big challenge for patients with limited leg muscle strength or who fatigue quickly.

[0006] Although motor-driven devices can provide powerful assistance, they are often bulky, adding to the patient's burden, and in some cases may affect their effectiveness due to unstable power supply or battery life issues. Summary of the invention

[0007] The object of the present invention is to provide a spinal fixation device that is convenient for sitting up, so as to solve the problem in the above background technology that patients with spinal injuries have difficulty sitting up after wearing the spinal fixation device.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A spinal fixation device that is convenient for sitting up, comprising a backboard, the backboard having a mounting side, and the mounting side having a swing rod, an adjustment mechanism and a pneumatic telescopic assembly connected in sequence along the length direction of the mounting side; the adjustment mechanism having a gas compression assembly and a channel assembly, the swing rod being transmission-connected to the gas compression assembly for compressing the gas in the gas compression assembly, the gas compression assembly being communicated with the channel assembly so that the gas in the gas compression assembly flows into the channel assembly unidirectionally; a transmission assembly is provided between the pneumatic telescopic assembly and the swing rod so that the pneumatic telescopic assembly can swing up and down relative to the mounting side, and the pneumatic telescopic assembly can be swingably connected with the channel assembly so that compressed gas enters the pneumatic telescopic assembly for driving the pneumatic telescopic assembly to extend and retract.

[0010] Furthermore, the gas compression component has an air chamber, and the transmission component is penetrated through the air chamber and extends into the channel component.

[0011] Furthermore, the transmission assembly has a screw mechanism in the air chamber, the screw mechanism has a first input end, a first output end and a slider, a screw is provided between the first input and the first output ends, the slider is threadedly engaged with the screw, the first input end and the first output end are rotatably sealed and connected to the inner wall of the air chamber, and the slider is slidably sealed and engaged with the inner wall of the air chamber.

[0012] Furthermore, the transmission assembly has a bevel gear mechanism in the channel assembly, the bevel gear mechanism has a second input end and a second output end, the second input end is rotatably sealed and connected to the first output end, and a line connecting the first input end and the first output end has an angle with a line connecting the second input end and the second output end.

[0013] Furthermore, the channel assembly has a first channel and a second channel, the first channel and the second channel are sealed and separated, the two ends of the first channel are respectively connected to the air chamber and the pneumatic telescopic assembly for flow diversion, the bevel gear mechanism is arranged in the second channel, one end of the second channel is tightly connected to the outer wall of the air chamber, and the other end of the second channel is swingably and sealably connected to the pneumatic telescopic assembly.

[0014] Furthermore, the channel assembly has a third channel and a cover plate, the two ends of the third channel are respectively connected to the first channel and the second channel, the cover plate is arranged at one end of the third channel, the cover plate is elastic, when the air pressure in the first channel is greater than the air pressure in the second channel, the cover plate is pressed by the airflow in the first channel, and when the air pressure in the first channel is less than the air pressure in the second channel, the cover plate is pushed open by the airflow in the second channel.

[0015] Furthermore, an isolation plate is provided in the second channel, and the isolation plate is tightly connected to the inner wall of the second channel. The second channel is isolated by the isolation plate to form a first area and a second area, wherein the first area is located on a side close to the air chamber, the first area is connected to the third channel, and the volume of the first area is much smaller than the volume of the first channel.

[0016] Furthermore, the first channel has an inlet end and an outlet end, and the volume of the first channel decreases along the direction from the inlet end to the outlet end.

[0017] Furthermore, one end of the first channel close to the pneumatic telescopic assembly has an arc portion, and the center of the arc portion is located on the outlet end side of the first channel.

[0018] Furthermore, the channel assembly has a receiving groove for receiving the pneumatic telescopic assembly.

[0019] The advantages of the spinal fixation device for facilitating sitting up described in the present invention over the prior art are:

[0020] Through the transmission connection between the rocker arm and the gas compression component, the mechanical energy of the patient's legs is converted into gas compression energy, and then the energy of the compressed gas is converted into mechanical energy through the pneumatic telescopic component, thereby achieving continuous conversion and efficient utilization of energy, ensuring that the patient consumes less physical strength when driving the device, making the sitting up process easier, and is especially suitable for patients with spinal injuries who have limited upper limb strength.

[0021] Through the design of the pneumatic telescopic component, the device can automatically adjust to an appropriate support state after the patient completes the sitting-up movement, ensuring that the patient's spine is fully supported when sitting, avoiding additional pressure on the spine caused by sitting for a long time, thereby achieving a seamless connection between sitting up and maintaining a sitting posture.

[0022] At the same time, it does not rely on external driving devices such as motors, but is driven by the patient's own leg strength, which not only reduces the weight of the device, improves portability and comfort, but also eliminates the need for external power supply, allowing the device to work normally in any environment, enhancing its practicality and scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is an isometric view of the present invention;

[0024] Figure 2 It is one of the partial structural schematic diagrams of the present invention;

[0025] Figure 3 This is the second schematic diagram of the partial structure of the present invention;

[0026] Figure 4 It is one of the planar schematic diagrams of the channel assembly of the present invention;

[0027] Figure 5 This is the second plan view of the channel assembly of the present invention;

[0028] Figure 6 The third schematic plan view of the channel assembly of the present invention;

[0029] Figure 7 It is an isometric view of the channel assembly of the present invention.

[0030] Markings and corresponding component names in the accompanying drawings: 10-back plate, 101-installation side, 20-rocker, 301-gas compression assembly, 3011-air chamber, 302-channel assembly, 3021-first channel, 3022-second channel, 3023-third channel, 40-pneumatic telescopic assembly, 50-transmission assembly, 501-first input end, 502-first output end, 503-slider, 504-second input end, 505-second output end, 60-cover plate, 70-isolation plate, 80-arc portion, 90-storage groove. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0032] Embodiment 1, as Figure 1 As shown, the present embodiment provides a spinal fixation device that is convenient for sitting up, including a back plate 10. The back plate 10 is made of a lightweight and high-strength material, such as a carbon fiber composite material or a lightweight aluminum alloy. Its shape design follows the principles of ergonomics. The back curve matches the natural shape of the human spine, providing a comfortable fit and reducing the feeling of oppression when worn. At the same time, a buffer layer is provided at key positions to increase wearing comfort.

[0033] The left and right sides of the back plate 10 form a mounting side 101, and the mounting side 101 has a rocker arm 20, an adjustment mechanism and a pneumatic telescopic assembly 40 connected in sequence. The rocker arm 20 can be connected to the back plate 10 in a hinged manner, and a strap can be provided at the free end of the rocker arm 20 to facilitate the patient to drive the rocker arm 20 by slightly swinging the legs to achieve preliminary energy conversion.

[0034] The regulating mechanism is arranged on the upper side of the pendulum 20, and it is composed of a gas compression assembly 301 and a channel assembly 302. The pendulum 20 is connected to the gas compression assembly 301 in a transmission manner, and is responsible for converting the mechanical energy transmitted by the pendulum 20 into gas compression energy and controlling the directional flow of the gas. The gas compression assembly 301 can be of various types, including but not limited to spring-type, piston-type or other innovative compression devices, and is responsible for converting the mechanical energy transmitted by the pendulum 20 into gas compression energy and storing it for subsequent use. In order to enhance the compression efficiency and response speed, the compression device is connected to a micro air pump, which can quickly replenish gas when needed to ensure the continuous operation of the device.

[0035] The gas compression assembly 301 is connected to the channel assembly 302, and a one-way valve is provided between the gas compression assembly 301 and the channel assembly 302 to ensure that the gas can only flow from the gas compression assembly 301 to the channel assembly 302 in one direction, to prevent backflow, and to improve the efficiency and safety of energy conversion. The channel assembly 302 is also provided with a vent for releasing gas in a non-working state or in an emergency.

[0036] The pneumatic telescopic component 40 is the part that ultimately performs the sitting-up assistance action. The pneumatic telescopic component 40 is responsible for receiving compressed gas and driving its expansion and contraction through changes in air pressure, thereby assisting the patient to complete the sitting-up action. The transmission component 50 is located between the rocker arm 20 and the pneumatic telescopic component 40. Its function is to transfer the mechanical energy of the rocker arm 20 to the pneumatic telescopic component 40, and drive the pneumatic telescopic component 40 to swing up and down relative to the mounting side 101. The swinging connection design between the dynamic telescopic component and the channel component 302 ensures that the compressed gas can flow smoothly with the swing of the pneumatic telescopic component 40. Even when the pneumatic telescopic component 40 swings up and down relative to the back plate 10, a stable supply of gas can be maintained to drive the telescopic action of the pneumatic telescopic component 40.

[0037] When in use, the patient slightly swings his legs to drive the swing rod 20 to move. This initial action converts the mechanical energy of the legs into subsequent power. The movement of the swing rod 20 is transmitted to the pneumatic telescopic assembly 40 through the transmission assembly 50, realizing the first energy conversion, that is, converting the mechanical energy of the legs into power to drive the pneumatic telescopic assembly 40.

[0038] The pneumatic telescopic assembly 40 swings up and down relative to the mounting side 101, and performs a circular motion with its fixed end as the center and the length from the fixed end to the telescopic end as the diameter, forming an arc-shaped support surface. This ensures that the patient's spine can be naturally and comfortably supported during the sitting-up process, reduces unnecessary pressure, and improves the comfort and safety of the sitting-up action. At the same time, this circular motion and the formation of the arc-shaped support surface not only assist the patient in completing the sitting-up action, but also ensure a smooth transition of the sitting posture, providing full assistance from sitting up to sitting firmly.

[0039] During the process of the patient sitting up, compressed gas flows into the pneumatic telescopic assembly 40 through the channel assembly 302, providing power for the telescopic action of the pneumatic telescopic assembly 40, which not only assists the patient to complete the sitting action, but also maintains the patient's sitting posture after sitting up, provides continuous support, and reduces the patient's physical exertion when maintaining a sitting posture.

[0040] This embodiment realizes efficient energy conversion in the whole process from leg drive to sitting assistance and then to sitting posture maintenance, providing a safe, lightweight and comfortable sitting assistance solution for patients with spinal injuries, greatly improving the quality of life of patients, reducing dependence on external help, and enhancing self-confidence and quality of life.

[0041] Embodiment 2, on the basis of the above embodiment, in order to simplify the structure of the device and make it more compact and light, the gas compression component 301 has an air chamber 3011, which is used as a storage space for compressed gas and is responsible for receiving the mechanical energy transmitted by the swing rod 20 through the transmission component 50 and converting it into gas compression energy. This design ensures the efficiency and stability of the gas compression process, and also provides a guarantee for the subsequent gas transmission and utilization. The transmission component 50 is arranged in the air chamber 3011 and extends into the channel component 302. The transmission component 50 is not only responsible for transmitting the mechanical energy of the swing rod 20 to the gas compression component 301, but also extends from the inside of the air chamber 3011 to the channel component 302, realizing the close combination of energy transmission and gas control. This integrated design reduces the loss in the energy transmission process, improves the working efficiency of the entire system, and also helps to reduce the size of the device and improve its portability and wearing comfort.

[0042] Specifically, the core part of the transmission assembly 50 can adopt a screw mechanism, which is composed of a screw, a nut and a slider. The rocker arm 20 can be connected to the rotating end of the screw through a bevel gear. When the rocker arm 20 is driven to rotate by the leg, the screw rotates accordingly. The nut is fixed on the slider. As the screw rotates, the nut moves along the axial direction of the screw, and the slider slides along the guide track in the air chamber 3011, converting mechanical energy into linear motion.

[0043] Embodiment 3, on the basis of the above embodiment, the core of the transmission assembly 50 is a precision screw mechanism, which mainly includes a first input end 501, a first output end 502 and a slider 503, a screw is provided between the first input end 501 and the first output end 502, the slider 503 cooperates with the screw thread, and the screw mechanism is designed inside the air chamber 3011 to reduce space occupancy and optimize the layout of the entire device, the first input end 501 is directly connected to the rocker arm 20 through a bevel gear, and receives driving energy from the patient's leg through the rocker arm 20, and the first input end 501 and the first output end 502 are rotatably sealed and connected to the inner wall of the air chamber 3011.

[0044] Specifically, the first input end 501 and the first output end 502 are usually shaft-shaped structures, and the end faces can be designed to be smooth or have specific grooves, flanges or keyway structures. Precision-machined sealing grooves can be reserved on the inner wall of the air chamber 3011 for the first input end 501 and the first output end 502. High-performance bidirectional dynamic sealing rings can be used and installed in the sealing grooves between the first input end 501 and the first output end 502 and the inner wall of the air chamber 3011. Such sealing rings are usually made of corrosion-resistant and wear-resistant synthetic rubber or fluororubber, and are designed with two lips facing the inside and outside of the air chamber 3011 respectively, to ensure that during the rotation process, the two lips form two independent sealing interfaces respectively, effectively preventing gas leakage. The design of the sealing groove must ensure that after the sealing ring is installed, it can not only fit tightly on the surface of the first input end 501 and the first output end 502, but also form good contact with the wall of the air chamber without leaving any gaps, thereby ensuring sealing.

[0045] The slider 503 and the inner wall of the air chamber 3011 can be slidably sealed to ensure that when the slider 503 slides in the air chamber 3011, the gas inside and outside the air chamber 3011 does not leak, and the slider 503 can move smoothly and stably. Specifically, a special groove can be designed on the edge of the slider 503 to embed one or more circles of sealing rings (such as O-rings or U-rings). These sealing rings are usually made of materials with good elasticity (such as nitrile rubber, fluororubber, etc.), which can adapt to the slight gap changes between the slider 503 and the wall of the air chamber 3011 and maintain a good sealing effect. The surface of the slider 503 in contact with the wall of the air chamber 3011 is precisely processed to ensure smoothness and straightness to reduce friction.

[0046] Embodiment 4, as Figure 3 As shown, based on the above embodiment, the transmission assembly 50 has a bevel gear mechanism in the channel assembly 302, and the bevel gear mechanism is composed of a second input end 504 and a second output end 505. The two gears are meshed in a conical shape, so that the two axes can be not in the same plane and form a certain angle intersection. In this embodiment, the bevel gear mechanism is integrated inside the channel assembly 302, and is used to connect the first output end 502 with the subsequent power transmission link.

[0047] The first output end 502, i.e. the transmission shaft driven by the slider 503 inside the air chamber 3011, is connected to the second input end 504 of the bevel gear mechanism through a specially designed sealing joint. The sealing joint not only ensures the rotatable connection between the two shafts, but also has good sealing performance to prevent gas leakage. The joint may use a floating seal or a dynamic seal (such as a lip seal) to ensure air tightness, while allowing small axial and radial displacements to adapt to changes in the motion process.

[0048] The angle between the line connecting the first input terminal 501 and the first output terminal 502 and the line connecting the second input terminal 504 and the second output terminal 505 is designed to meet the needs of the overall layout of the device or the patient's body structure, and may be flexibly adjusted according to the actual application environment and the device installation location to optimize the transmission efficiency and space utilization. This design can make the entire device more ergonomic and convenient for patients to wear and operate.

[0049] Through the above design, not only the flexibility and adaptability of the transmission system are improved, but also the compactness and efficiency of the overall device are maintained, which further optimizes the patient's user experience and demonstrates the innovative application of rehabilitation assistive technology in complex spatial layouts and specific functional requirements.

[0050] Embodiment 5, as Figure 4 As shown, based on the above embodiment, the layout of the gas transmission and transmission assembly 50 is further optimized, and the gas flow path and the arrangement area of ​​the transmission assembly 50 are effectively separated by introducing a dual-channel design, thereby improving the overall integration and working efficiency of the device. Specifically, the first channel 3021 is used for gas transmission, and the second channel 3022 is used for arranging the bevel gear mechanism, and the two are sealed and separated to ensure the independence and effectiveness of their respective functions.

[0051] The first channel 3021 is the main channel for gas circulation, and its two ends are directly connected to the gas chamber 3011 and the pneumatic telescopic assembly 40. The first channel 3021 is made of pressure-resistant and corrosion-resistant materials (such as stainless steel or engineering plastics), and has a smooth interior to reduce gas flow resistance, ensuring that the gas can be quickly and stably transmitted to the pneumatic telescopic assembly 40 to drive its telescopic action.

[0052] The second channel 3022 is parallel to the first channel 3021 but completely sealed and isolated, and is dedicated to accommodating the bevel gear mechanism. The setting of the second channel 3022, on the one hand, avoids the interference of the transmission component 50 on the gas transmission, and on the other hand, protects the bevel gear mechanism from the influence of the gas pressure, thereby improving the reliability and safety of the system. One end of the second channel 3022 is tightly connected to the outer wall of the air chamber 3011 through a sealing flange or welding to ensure that the air tightness of the air chamber 3011 is not affected; the other end is connected to the pneumatic telescopic component 40 through a swingable sealing joint. This joint design allows the pneumatic telescopic component 40 to swing within a certain range while maintaining gas sealing to meet the patient's activity needs.

[0053] The dual-channel design achieves effective separation of gas transmission and power transmission, which not only improves the compactness of the device, but also significantly enhances the stability and efficiency of the system. In addition, the integration of the bevel gear mechanism and the sealed connection of the second channel 3022 demonstrate the ingenious use of complex spatial layout and the careful consideration of the actual needs of patients.

[0054] Embodiment 6, as Figure 5 As shown, on the basis of the above embodiment, the channel assembly 302 has a third channel 3023 and a cover plate 60, wherein the two ends of the third channel 3023 are respectively connected to the first channel 3021 and the second channel 3022, and the cover plate 60 is arranged at one end of the third channel 3023, and is elastic, and can automatically adjust the opening and closing under different air pressure conditions to control the flow direction of the gas. Specifically, when the air pressure in the first channel 3021 is greater than the air pressure in the second channel 3022, the cover plate 60 is compressed by the airflow in the first channel 3021, preventing the gas from flowing from the first channel 3021 to the second channel 3022; and when the air pressure in the first channel 3021 is less than the air pressure in the second channel 3022, the cover plate 60 is pushed open by the airflow in the second channel 3022, allowing the gas to flow in the reverse direction.

[0055] The elastic design of the cover plate 60 enables it to automatically adjust its position according to the air pressure difference between the channels on both sides, thereby realizing intelligent control of gas flow. This design ensures that the gas only flows from the first channel 3021 to the second channel 3022 under specific conditions, or flows in the opposite direction when necessary, thereby improving the efficiency of energy conversion and transmission.

[0056] Under normal working conditions, the function of the cover plate 60 is to prevent the gas from flowing back from the first channel 3021 to the first channel 3021. This design prevents the ineffective circulation of energy and improves the stability and safety of the device.

[0057] However, in actual use, air leakage may occur at the connection between the first output terminal 502 and the second input terminal 504. For example, over time, the material used to seal the connection between the first output terminal 502 and the second input terminal 504 (such as a sealing ring, a sealing gasket) may gradually age, harden or wear due to long-term exposure to pressure, temperature changes or chemical substances, resulting in a decrease in sealing performance, thereby causing gas leakage.

[0058] Gas leakage may cause insufficient air pressure in the first channel 3021. Air pressure is the direct power source for driving the pneumatic telescopic component 40. Insufficient air pressure will cause the movement speed of the telescopic component to slow down, weaken its strength, or even fail to complete the expected telescopic action, affecting the normal function of the auxiliary device. Stable air pressure is the key to maintaining smooth operation of the device. Insufficient air pressure may cause the system to respond slowly and the movement to be incoherent, affecting the comfort and safety of the patient during use, especially in rehabilitation training that requires precise control of force and position. In order to compensate for the loss of air pressure caused by leakage, the system may need to replenish gas more frequently, which not only increases energy consumption, but also may shorten the service life of the compressor or air supply system. Not only that, in some cases, insufficient air pressure may cause the device to fail to reach the predetermined support force or lock state, and there is a risk of falling or injury for patients who rely on it for support.

[0059] In this embodiment, the leaked gas will enter the second channel 3022 and gradually accumulate. As the gas accumulates, the air pressure in the second channel 3022 will gradually increase. When the air pressure in the second channel 3022 exceeds the air pressure in the first channel 3021, the elastic cover plate 60 will be subjected to the force from the air pressure in the second channel 3022, and then pushed to the side of the first channel 3021. Since the cover plate 60 is designed to be elastic, it can adapt to the change of the air pressure difference. At this time, the cover plate 60 will be pushed away by the airflow in the second channel 3022, and a gas discharge path will be established. As the cover plate 60 moves, the originally sealed third channel 3023 is opened, so that the excess gas accumulated in the second channel 3022 can be discharged through the third channel 3023 and directly or indirectly return to the first channel 3021. The air pressure loss caused by the leakage in the first channel 3021 is indirectly compensated through the gas reflux mechanism, which helps to maintain the normal working performance of the pneumatic telescopic component 40.

[0060] Embodiment 7, as Figure 6 As shown, based on the above embodiment, the continuously accumulated gas forms an unexpected air pressure in the second channel 3022, which may cause the environmental pressure around the bevel gear mechanism to be unstable, affecting the tightness of the gear meshing and the transmission efficiency. In order to eliminate this influence, an isolation plate 70 is provided in the second channel 3022. The isolation plate 70 is tightly fixed to the inner wall of the second channel 3022, and the second channel 3022 is separated into two independent areas, namely a first area close to the side of the air chamber 3011 and a second area away from the air chamber 3011.

[0061] Specifically, the isolation plate 70 can be made of high-strength, corrosion-resistant materials to ensure that it can remain tightly combined with the inner wall of the second channel 3022 when subjected to long-term changes in internal air pressure, thereby effectively isolating the gas flow between the two areas.

[0062] The first area is adjacent to the air chamber 3011 and has a smaller volume design, which is approximately one tenth of the volume of the first channel 3021. The small volume design helps to quickly respond to changes in air pressure. When the air pressure in the second channel 3022 abnormally rises due to leakage or other reasons, the first area is affected first, and then it is connected with the third channel 3023 to quickly release or receive gas to adjust the air pressure balance.

[0063] The second area is located on the other side of the isolation plate 70. This area is used to temporarily store excess gas that enters the second channel 3022 due to leakage or other reasons, but it is kept at a certain distance from the bevel gear mechanism to reduce the impact of air pressure fluctuations on gear meshing. Through this layout, even if gas accumulates, it can effectively avoid directly acting around the bevel gear mechanism, ensuring its transmission efficiency and stability.

[0064] Of course, a small air pressure balance valve or pressure relief valve may be added to the second channel 3022 and used in combination with the isolation plate 70 design. When the air pressure in the second channel 3022 reaches a preset threshold, the valve automatically opens to release excess gas to the outside.

[0065] Embodiment 8, based on the above embodiment, the first channel 3021 has an inlet end and an outlet end, and the volume of the first channel 3021 decreases along the direction from the inlet end to the outlet end. This design is intended to optimize the gas transmission efficiency and reduce the gas pressure loss. The shape and size of the first channel 3021 gradually decrease along the gas flow direction (from the inlet end to the outlet end). This design utilizes the Venturi effect principle in fluid mechanics, which can speed up the gas flow rate while reducing turbulence and energy loss, thereby improving the gas transmission efficiency. The decreasing channel design can also naturally increase the pressure of the gas, which helps to provide a more stable and concentrated thrust when reaching the pneumatic telescopic assembly 40. Specifically, the first channel 3021 can be uniformly tapered, and the diameter or cross-sectional area decreases linearly from the inlet end to the outlet end.

[0066] Embodiment 9, as Figure 7 As shown, on the basis of the above embodiment, the first channel 3021 has an arc portion 80 at one end close to the pneumatic telescopic component 40, and the center of the arc portion 80 is located on the outlet end side of the first channel 3021, aiming to improve the airflow guidance, reduce the airflow impact, and enhance the smoothness and stability of the pneumatic system. Specifically, the arc portion 80 can form a complete semicircular structure with the outlet end as the center. This design can guide the airflow to turn very smoothly, almost eliminating the airflow resistance and turbulence caused by the right-angle turn, and is suitable for occasions with high requirements for airflow smoothness.

[0067] Embodiment 10, based on the above embodiment, the channel assembly 302 has a storage groove 90 for storing the pneumatic telescopic assembly 40, so as to better integrate and manage the pneumatic telescopic assembly 40 and improve the portability and practicality of the overall device. Specifically, the storage groove 90 is designed as a part of the channel assembly 302, and is integrated with the air chamber 3011, the first channel 3021 and other components to form a compact unit. This integrated design not only saves space, but also simplifies the assembly and maintenance process. In order to ensure the stability of the pneumatic telescopic assembly 40 in the storage state, a locking device is designed inside the storage groove 90, such as a spring buckle, a magnetic lock or a manual knob lock. The user can easily lock or unlock the pneumatic telescopic assembly 40 to prevent it from accidentally sliding out when moving or not in use.

[0068] Working principle:

[0069] The patient wears the spinal fixation device, the back plate 10 of the device is close to the patient's back, the pneumatic telescopic component 40 is in the initial position, maintaining a suitable supporting relationship with the patient's spine, the gas in the gas compression component 301 is in an uncompressed state, and the channel component 302 is unobstructed, waiting for gas flow.

[0070] The patient uses the strength of his own leg muscles to gently swing his legs. This action is transmitted to the swing rod 20 of the device through the transmission assembly 50, starting the entire power conversion process. As the swing rod 20 swings, the screw mechanism works in the air chamber 3011 to compress the internal gas. The gas pressure in the gas compression assembly 301 gradually rises, converting mechanical energy into potential energy of the gas. The gas compression assembly 301 is connected to the channel assembly 302 to ensure that the compressed gas flows in a guided manner.

[0071] When the gas is compressed, it flows into the channel assembly 302 in one direction. The bevel gear mechanism inside the channel assembly 302 further guides the gas flow direction, efficiently converting the kinetic energy of the gas into the force required to drive the pneumatic telescopic assembly 40. The pneumatic telescopic assembly 40 begins to swing up and down, and forms an arc-shaped support surface along the trajectory from its fixed end to the telescopic end. This movement simulates the support force required to assist the patient to sit up. As the pneumatic telescopic assembly 40 stretches, it provides a bottom-up thrust to the patient's spine, helping the patient overcome gravity and gradually complete the movement from lying flat to sitting up. In this process, due to the swinging characteristics of the pneumatic telescopic assembly 40, the arc-shaped support surface it forms can adapt to the natural curve of the spine and provide uniform and comfortable support.

[0072] During the pneumatic process, the air pressure regulating mechanism (such as the cover plate 60 and the isolation plate 70) from the first channel 3021 to the third channel 3023 will automatically respond to ensure smooth gas flow without causing unnecessary pressure accumulation, thereby maintaining the stability and safety of the entire system.

[0073] When multiple illustrative embodiments are mentioned in this specification, it means that the specific structure described in conjunction with the embodiment is included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when a structure is described in conjunction with any embodiment, it is claimed that the structure is implemented in conjunction with other embodiments within the scope of the present invention.

Claims

1. A spinal fixation device that facilitates sitting up, characterized in that: include: A back plate, the back plate having a mounting side, along the length direction of the mounting side, the mounting side having a swing rod, an adjustment mechanism and a pneumatic telescopic assembly connected in sequence; The regulating mechanism comprises a gas compression assembly and a channel assembly, the swing rod is in transmission connection with the gas compression assembly to compress the gas in the gas compression assembly, and the gas compression assembly is in communication with the channel assembly to allow the gas in the gas compression assembly to flow into the channel assembly in a unidirectional manner; A transmission assembly is provided between the pneumatic telescopic assembly and the rocker arm, so that the pneumatic telescopic assembly can swing up and down relative to the mounting side, and the pneumatic telescopic assembly is swingably connected to the channel assembly, so that compressed gas can enter the pneumatic telescopic assembly to drive the pneumatic telescopic assembly to extend and retract.

2. A spinal fixation device for facilitating sitting up according to claim 1, characterized in that: The gas compression component has an air chamber, and the transmission component is arranged through the air chamber and extends into the channel component.

3. A spinal fixation device for facilitating sitting up according to claim 2, characterized in that: The transmission assembly has a screw mechanism in the air chamber, the screw mechanism has a first input end, a first output end and a slider, a screw is provided between the first input and the first output ends, the slider is threadedly engaged with the screw, the first input end and the first output end are rotatably sealed and connected to the inner wall of the air chamber, and the slider is slidably sealed and engaged with the inner wall of the air chamber.

4. A spinal fixation device for facilitating sitting up according to claim 3, characterized in that: The transmission assembly has a bevel gear mechanism in the channel assembly, the bevel gear mechanism has a second input end and a second output end, the second input end is rotatably sealed and connected to the first output end, and a line connecting the first input end and the first output end has an angle with a line connecting the second input end and the second output end.

5. A spinal fixation device for facilitating sitting up according to claim 4, characterized in that: The channel assembly comprises a first channel and a second channel, the first channel and the second channel are sealed and separated, the two ends of the first channel are respectively connected to the air chamber and the pneumatic telescopic assembly for flow diversion, the bevel gear mechanism is arranged in the second channel, one end of the second channel is tightly connected to the outer wall of the air chamber, and the other end of the second channel is swingably and sealably connected to the pneumatic telescopic assembly.

6. A spinal fixation device for facilitating sitting up according to claim 5, characterized in that: The channel assembly comprises a third channel and a cover plate, wherein both ends of the third channel are respectively connected to the first channel and the second channel, and the cover plate is arranged at one end of the third channel. The cover plate is elastic, and when the air pressure in the first channel is greater than that in the second channel, the cover plate is pressed by the airflow in the first channel, and when the air pressure in the first channel is less than that in the second channel, the cover plate is pushed open by the airflow in the second channel.

7. A spinal fixation device for facilitating sitting up according to claim 6, characterized in that: An isolation plate is provided in the second channel, and the isolation plate is tightly connected to the inner wall of the second channel. The second channel is isolated by the isolation plate to form a first area and a second area, wherein the first area is located on a side close to the air chamber, the first area is connected to the third channel, and the volume of the first area is much smaller than the volume of the first channel.

8. A spinal fixation device for facilitating sitting up according to claim 7, characterized in that: The first channel has an inlet end and an outlet end, and the volume of the first channel decreases gradually from the inlet end to the outlet end.

9. A spinal fixation device for facilitating sitting up according to claim 8, characterized in that: One end of the first channel close to the pneumatic telescopic assembly has an arc portion, and the center of the arc portion is located at the outlet end side of the first channel.

10. A spinal fixation device for facilitating sitting up according to claim 9, characterized in that: The channel assembly has a receiving groove for receiving the pneumatic telescopic assembly.

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