Traditional Chinese medicine orthopedic splint

Abstract

In order to solve the problems that in the prior art, local pressure distribution is uneven, pressure sores are easily caused by long-term fixation, a splint is loosened and displaced after swelling fades away, joint exercise is limited during fixation, and the pressure state is difficult to intuitively judge, the invention provides a traditional Chinese medicine orthopedics splint, and belongs to the technical field of medical instruments. The splint body, the multiple fixing bands, the air bag expansion layer, the automatic pressure changing mechanism, the air pressure compensation mechanism and the active adjusting assembly are integrated together, the automatic pressure changing mechanism is used for changing air pressure distribution in the air bag expansion layer through displacement of a user, and the air pressure compensation mechanism is used for supplementing air pressure in the air bag expansion layer. The active adjusting assembly is used for actively changing the air pressure in the independent cavities at the two ends of the ventilation cavity. An intelligent, dynamic and safe traditional Chinese medicine orthopedic splint system is constructed, the treatment effect of external fracture fixation and the rehabilitation experience of a patient are remarkably improved, and the system has extremely high clinical popularization value.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a traditional Chinese medicine orthopedic splint. Background Technology

[0002] Orthopedics is one of the most common departments in major hospitals. It primarily studies the anatomy, physiology, and pathology of the musculoskeletal system, using medication, surgery, and physical methods to maintain and develop the normal shape and function of this system. When a fracture occurs, bruising and swelling often occur at the fracture site, requiring the use of orthopedic splints or plaster casts to immobilize the fracture and prevent secondary injury. Traditional Chinese medicine orthopedic splint external fixation is one of the core methods of traditional bone injury treatment in my country. With its advantages of being minimally invasive, providing elastic fixation, and adapting to the physiological shape of the limb, it is widely used in the clinical treatment of closed fractures of the limbs. Currently, commonly used orthopedic splints are mainly divided into traditional material splints (willow, cedar, cedar bark, etc.) and modern plastic material splints (polypropylene, polyethylene, etc.). Their core function is to maintain the alignment of the fracture ends through the support and fixation of the splint and the three-point pressure principle of the pads, creating a stable environment for fracture healing.

[0003] With the upgrading of clinical treatment needs, the requirements for the fixation stability, comfort, complication prevention and rehabilitation adaptability of orthopedic splints are increasing. For example, the patent document with publication number CN219089828U discloses a traditional Chinese medicine orthopedic splint consisting of multiple interconnected splints. However, existing traditional orthopedic splints and the splints in the cited documents still have the following problems in clinical application: Uneven pressure distribution and high risk of pressure ulcers: Existing splints mostly apply pressure by binding with fixation straps, concentrating the pressure at the local contact point. Long-term fixation can easily lead to local skin blood circulation disorders and cause complications such as pressure ulcers. This problem is more prominent when used for long-term fixation patients after fracture surgery.

[0004] Swelling subsides easily, leading to loosening and displacement: After a fracture, the affected limb is significantly swollen. As the recovery process progresses, the swelling gradually subsides. However, existing splints lack an effective pressure compensation mechanism. After the swelling subsides, the splint is prone to loosening, causing displacement of the fracture ends and loss of fixation effect. The tightness of the splint needs to be adjusted repeatedly, increasing the clinical workload and patient suffering.

[0005] The contradiction between fixation and rehabilitation exercises is prominent: existing splints, in order to ensure fixation stability, often restrict the movement of joints in the affected limb, making it difficult to achieve the traditional Chinese medicine treatment principle of "combining movement and stillness". Long-term immobilization can easily lead to joint stiffness and muscle atrophy, affecting postoperative functional rehabilitation; if the fixation is loosened too much to accommodate exercise, it can easily lead to displacement of the fracture ends.

[0006] Pressure status is difficult to judge intuitively: The squeezing pressure and tightness of existing splints mainly rely on the experience of medical staff to judge, and there is a lack of visual pressure monitoring methods. This can easily lead to excessive pressure damaging tissues or insufficient pressure causing fixation failure, which is especially unfriendly to primary medical institutions and inexperienced medical staff.

[0007] Therefore, there is an urgent need to design a traditional Chinese medicine orthopedic splint to solve the above problems. Summary of the Invention

[0008] To address the problems of uneven local pressure distribution, pressure sores caused by long-term fixation, splint loosening and displacement after swelling subsides, limited joint exercise during fixation, and difficulty in visually assessing pressure status in existing technologies, this invention aims to provide a traditional Chinese medicine orthopedic splint. The splint includes a splint body and several fixation straps on both sides of the splint body. It also includes: an air-filled expansion layer located on the lower side of the splint body for applying pressure to the affected area; an automatic pressure-changing mechanism located on the upper side of the splint body and connected to the air-filled expansion layer for altering the air pressure distribution within the air-filled expansion layer using the user's own displacement; and an air pressure compensation mechanism located on the upper side of the splint body and connected to the air-filled expansion layer for replenishing the air pressure within the air-filled expansion layer. By integrating four core functions—automatic pressure changing, air pressure compensation, active training, and visual monitoring—a smart, dynamic, and safe traditional Chinese medicine orthopedic splint system is constructed, significantly improving the treatment effect of external fixation for fractures and the patient's rehabilitation experience, possessing extremely high clinical application value.

[0009] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A traditional Chinese medicine orthopedic splint includes a splint body and several fixing straps disposed on both sides of the splint body, and further includes: An airbag inflation layer is located on one side of the splint body to apply pressure to the affected area; An automatic pressure-changing mechanism is located inside the other side of the clamp body and is connected to the airbag inflation layer. It is used to change the air pressure distribution in the airbag inflation layer by utilizing the user's own displacement. The air pressure compensation mechanism, connected to the airbag inflation layer and the automatic pressure switching mechanism, is used to balance and regulate the air pressure changes within the airbag inflation layer.

[0010] Preferably, the airbag inflation layer comprises: The airbag inflation layer body is set on one side of the clamp body along the length of the clamp body body; Two airbag side chambers are independently located at both ends of the airbag inflation layer body and are simultaneously connected to the automatic pressure changing mechanism. The central chamber of the airbag is independently located between the two side chambers of the airbag and is connected to the automatic pressure-changing mechanism. The volume of the central chamber of the airbag is larger than that of the side chambers of the airbag.

[0011] Preferably, the automatic pressure changing mechanism includes: The air exchange chamber is located on the splint body, with one end connected to the two side chambers of the airbag and the other end connected to the central chamber of the airbag. The ventilation seat is located in the center of the ventilation chamber, dividing the inner cavity of the ventilation chamber into two independent chambers. Both ends of the ventilation seat are connected to the two independent chambers respectively. Two sets of ventilation components are symmetrically and movably embedded on both sides of the ventilation seat to change the air pressure at both ends of the ventilation chamber.

[0012] Preferably, the ventilation assembly includes a counterweight ball and a counterweight block.

[0013] Preferably, the air pressure compensation mechanism includes: The first air pressure compensation component is embedded in one end of the clamp body, and one end is simultaneously connected to the ventilation chamber and the central chamber of the airbag. Two second air pressure compensation components are symmetrically embedded at the other end of the clamp body, and one end is connected to the ventilation chamber and the central chamber of the airbag respectively. At the same time, the two second air pressure compensation components are also connected to the two side chambers of the airbag respectively.

[0014] Preferably, the first pressure compensation component and the second pressure compensation component have the same structure, both including: The sleeve is connected at one end to the ventilation chamber; Two pistons, one of which is fixedly embedded in the distal end of the casing, and the other is movably disposed in the proximal end of the casing; The first elastic element is connected between the two pistons and is used to drive the proximal piston to move.

[0015] Preferably, the clamp further includes an active adjustment component, which is disposed on the clamp body and used in conjunction with the ventilation chamber to actively change the air pressure in the independent chambers at both ends of the ventilation chamber.

[0016] Preferably, the active adjustment component includes: A pull rope, one end of which is movably inserted into the end of the clamp body; The positioning component is movably inserted into the body of the clamp plate via the cover. The drive assembly is slidably mounted on the clamping plate body and works in conjunction with the positioning component. The end of the drive assembly is also connected to the pull rope. The ventilation assembly is movably inserted into the ventilation chamber, located within the ventilation seat, and engages with the drive assembly.

[0017] Preferably, the driving component includes: The L-shaped rack meshes with the ventilation assembly, and its end is connected to the pull rope; The second elastic element is connected at one end to the pull rope and at the other end to the outer wall of the ventilation chamber.

[0018] The beneficial effects of this invention are: This invention discloses a traditional Chinese medicine orthopedic splint, and compared with the prior art, the improvement of this invention lies in: (1) This invention abandons the traditional splint "static pressure fixation" mode. By setting up an airbag expansion layer and an automatic pressure-changing mechanism, it uses the patient's own displacement generated by daily walking or limb activities as the driving force to drive the counterweight ball and counterweight block in the air-changing seat to roll together. This process enables periodic gas exchange and pressure conversion between the central chamber of the airbag and the side chambers of the airbag on both sides. This design not only avoids a single part bearing constant pressure for a long time, fundamentally reducing the risk of pressure ulcers; at the same time, the dynamic pressure changes produce a regular micro-massage effect on the skin and soft tissue of the affected area, which can effectively promote local blood circulation and accelerate metabolism, taking into account both the stability of fracture fixation and the patient's wearing comfort, and solving the problem of "uneven pressure distribution and high risk of pressure ulcers" in the background technology.

[0019] (2) To address the problem of splint loosening caused by the gradual reduction of swelling in the affected limb after a fracture, this invention innovatively introduces a pneumatic pressure compensation mechanism. This mechanism, through the cooperation of an elastic element and a piston, utilizes the conversion of elastic potential energy and air pressure to dynamically compensate for the air pressure in the airbag system. When the swelling of the affected limb subsides and the airbag pressure decreases, the elastic element drives the proximal piston to move, automatically fine-tuning the gas volume within the airbag, ensuring that the airbag always fits tightly against the affected area and maintains effective fixation pressure. This adaptive compensation mechanism avoids the cumbersome operation of repeatedly disassembling and adjusting the tightness of traditional splints, reducing patient suffering and the clinical workload of medical staff, ensuring the reliability of fixation throughout the entire fracture healing cycle, and precisely solving the technical problem of "easy loosening and displacement after swelling subsides."

[0020] (3) Based on the automatic dynamic pressure application, this invention further incorporates an active adjustment component, perfectly embodying the TCM principle of "combining movement and stillness" in treating bone injuries. When rehabilitation training is required, patients or medical staff can manipulate the active adjustment component to use a pull rope in conjunction with an L-shaped rack and gear to drive a vane pump, thereby achieving a large-scale, active adjustment of the air pressure in the airbag chamber.

[0021] For example, patients with upper limb fractures can pull ropes with their fingers to train their finger joints while simultaneously driving the splint to periodically apply and release pressure on the fracture ends. This design organically integrates fixation treatment with functional rehabilitation, ensuring the stability of the fracture ends while preventing joint stiffness and muscle atrophy caused by prolonged immobilization. This significantly improves rehabilitation outcomes and overcomes the drawback of "prominent contradiction between fixation and rehabilitation exercises."

[0022] (4) To compensate for the shortcomings of traditional splints that rely on "feel" and "experience" to adjust pressure, this invention provides a transparent observation window with scale lines at the piston near the proximal end of the sleeve of the air pressure compensation mechanism, corresponding to the position of the splint body. Patients or medical staff can intuitively and quantitatively calculate the pressure applied to the affected area by the central chamber and side chambers of the airbag by observing the position of the piston. This visualization design not only provides a precise basis for inflation during initial installation, but also allows for real-time monitoring of pressure changes throughout the rehabilitation process, effectively avoiding tissue damage caused by excessive pressure or fixation failure due to insufficient pressure. It is particularly user-friendly and practical for primary healthcare institutions and inexperienced medical staff, completely solving the problem of "difficulty in intuitively judging pressure status". Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the orthopedic splint of the present invention from a top view. Figure 1 ; Figure 2 This is a schematic diagram of the traditional Chinese medicine orthopedic splint of the present invention from an upward viewing angle; Figure 3 This is a vertical cross-sectional view of the traditional Chinese medicine orthopedic splint of the present invention; Figure 4 This is a horizontal cross-sectional view of the traditional Chinese medicine orthopedic splint of the present invention; Figure 5 This is a schematic diagram showing the connection between the ventilation chamber and the pressure compensation mechanism of the present invention; Figure 6 This is a schematic diagram of the ventilation chamber structure of the present invention; Figure 7 This is an exploded view of the first air pressure compensation component of the present invention; Figure 8 This is a schematic diagram of the structure of the orthopedic splint of the present invention from a top view. Figure 2 ; Figure 9 This is a schematic diagram of the structure of the orthopedic splint of the present invention from a top view. Figure 3 ; Figure 10 This is a diagram showing the connection relationship of the positioning components of the present invention; Figure 11 This is a schematic diagram of the ventilation seat structure of the present invention; Figure 12 This is a schematic diagram of the L-shaped rack and pinion connection structure of the present invention; Figure 13 This is a schematic diagram of the ventilation component structure of the present invention; Figure 14 This is a modeling diagram of the traditional Chinese medicine orthopedic splint of the present invention; The components include: 1. Clamping plate body; 2. Fixing strap; 3. Airbag inflation layer; 301. Airbag inflation layer body; 302. Airbag side chamber; 303. Airbag central chamber; 4. Automatic pressure changing mechanism; 401. Air changing chamber; 402. Air changing seat; 403. Counterweight block; 404. Counterweight ball; 5. Pressure compensation mechanism; 501. First air pressure compensation component; 5011. Sleeve; 5012. Piston; 5013. Elastic element one; 502. Second air pressure compensation component; 6. Active adjustment component; 601. Pull rope; 6011. Cover; 602. Positioning component; 603. Drive component; 6031. L-shaped rack; 6032. Elastic element two; 604. Air changing component; 6041. Gear; 6042. Vane pump. Detailed Implementation

[0024] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of this application.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the components are shown in the drawings only as examples and not necessarily to actual scale.

[0027] Example 1: See attached document Figures 1-7 The illustrated traditional Chinese medicine orthopedic splint includes a splint body 1, a fixation strap 2, an air-filled inflation layer 3, an automatic pressure-changing mechanism 4, and an air pressure compensation mechanism 5. The splint body 1, serving as the basic load-bearing layer, is made of a high-strength, lightweight, X-ray-transparent material (preferably polypropylene or ABS plastic), possessing sufficient structural strength to ensure the stability of fracture fixation while avoiding excessive weight that could burden the affected limb. The shape of the splint body 1 is designed according to the physiological morphology of the upper limb, adaptable to easily fractured areas such as the forearm, wrist, and leg, ensuring a close fit to the limb.

[0028] The appropriate pressure range and safe upper limit (to avoid pressure sores, ischemia, and nerve compression) of the air bladder expansion layer 3 on the surface of the human limb: Skin surface pressure: <30-40 mmHg (≈4-5.3 kPa). Pressure exceeding 40 mmHg with continuous compression → microvascular occlusion → significantly increased risk of pressure sores and ischemia. The optimal working pressure range for effective and safe fracture fixation: 15-30 mmHg (≈2-4 kPa). During the peak swelling period (the first 1-3 days), the pressure must be even lower; a recommendation of 10-20 mmHg (≈1.3-2.7 kPa) is suggested to allow for swelling space and prevent high pressure in the osteofascial compartment.

[0029] In practical use, at least two TCM orthopedic splints as described in this embodiment are required to clamp and fix the affected area. Depending on the situation, the two TCM orthopedic splints can be used individually or together with the fixation strap 2. The fixation strap 2 consists of two sets of straps with Velcro, which are fixedly installed on both sides of the splint body 1 to firmly fix the splint body 1 to the patient's fracture site, such as the leg or arm. Each set of straps has three straps, two of which are narrower and one is wider, with the wider strap positioned between the two narrower straps.

[0030] The airbag expansion layer 3 is fixedly bonded to the lower side of the splint body 1 and directly adheres to the patient's skin to apply pressure to the affected area, thereby preventing further edema and promoting recovery. The automatic pressure-changing mechanism 4 is located inside the upper side of the splint body 1 and communicates with the airbag expansion layer 3. During use, it utilizes the user's own displacement (daily arm or leg movements) to change the air pressure distribution within the airbag expansion layer 3, thus making the pressure applied by the airbag expansion layer 3 to the fixation point of the patient's affected area dynamically changeable. This avoids pressure sores that are easily formed under prolonged fixed pressure at the fixation point, while also promoting blood circulation, facilitating patient recovery, and ensuring comfort.

[0031] The air pressure compensation mechanism 5 is located on the upper side of the splint body 1 and is connected to the airbag expansion layer 3. It is used to supplement the air pressure in the airbag expansion layer 3, balance and regulate the air pressure changes in the airbag expansion layer, thereby adapting to the swelling reduction process of the affected limb after fracture, avoiding the loosening and displacement of the splint body 1, and prolonging the rehabilitation time.

[0032] In the embodiments of this application, reference is made to the appendix. Figures 1-3 As shown, the airbag inflatable layer 3 includes an airbag inflatable layer body 301, two airbag side chambers 302, and an airbag central chamber 303. The length of the airbag inflatable layer body 301 is slightly shorter than the length along the clamping plate body 1, and it is fixedly bonded to the bottom of the clamping plate body 1 along its length. The airbag inflatable layer body 301 is made of silicone or rubber. The airbag inflatable layer body 301 is provided with inflation ports for inflating the two airbag side chambers 302 and the airbag central chamber 303, respectively.

[0033] Two airbag side chambers 302 are independently located on both sides of the airbag expansion layer body 301 and are simultaneously connected to one side of the automatic pressure switching mechanism 4. The automatic pressure switching mechanism 4 can simultaneously introduce gas into the two airbag side chambers 302, causing the two airbag side chambers 302 to expand and thus apply pressure to the patient.

[0034] The central chamber 303 of the airbag is independently disposed between the two side chambers 302 of the airbag and is connected to the other side of the automatic pressure changing mechanism 4. The volume of the central chamber 303 of the airbag is larger than that of the side chambers 302 of the airbag. Preferably, the sum of the volumes of the two side chambers 302 of the airbag is equal to the volume of the central chamber 303 of the airbag.

[0035] During use, the central chamber 303 and the two side chambers 302 of the airbag fit closely to different key areas of the affected area, simultaneously applying pressure to these areas. The automatic pressure-changing mechanism 4 utilizes the patient's active self-movement (daily arm or leg movements) to dynamically and cyclically adjust the gas volume between the central chamber 303 and the two side chambers 302, thereby dynamically changing the pressure applied to the affected area by the two side chambers 302 and the central chamber 303, preventing pressure sores caused by prolonged use under fixed pressure.

[0036] To improve user comfort, this application also includes a breathable and moisture-absorbing layer fixedly bonded to the lower end of the airbag expansion layer body 301. This layer serves as the direct contact layer between the splint body 1 and the human skin. It is made of gauze and high-performance breathable material composite. The gauze has good moisture absorption properties and can quickly absorb skin sweat and secretions. The breathable material layer (which can be medical breathable non-woven fabric or microporous breathable fabric) ensures air circulation, avoids local skin dampness and stuffiness, and has a certain degree of softness to improve wearing comfort. This breathable and moisture-absorbing layer is closely attached to the airbag expansion layer body 301, which can evenly distribute the pressure transmitted by the airbag to the surface of the human skin.

[0037] In the embodiments of this application, reference is made to the appendix. Figures 4-7 As shown, the automatic pressure-changing mechanism 4 includes a ventilation chamber 401, a ventilation seat 402, and two sets of ventilation components. The ventilation chamber 401 is fixedly bonded to the upper side of the clamping plate body 1. One end of the chamber is connected to the two side chambers 302 of the airbag through an air supply pipe, and the other end is connected to the central chamber 303 of the airbag through an air supply pipe. The ventilation seat 402 is fixedly bonded to the center position inside the ventilation chamber 401, dividing the inner cavity of the ventilation chamber 401 into two independent chambers. Both ends of the ventilation seat 402 are connected to the two independent chambers of the ventilation chamber 401, that is, the two independent chambers are connected through the ventilation seat 402.

[0038] Two sets of ventilation components are symmetrically and dynamically embedded on both sides of the ventilation seat 402. The patient's active self-displacement (daily arm or leg movements) causes a change in the balance of the center position of the ventilation seat 402, thereby changing the air pressure in the two independent chambers of the ventilation chamber 401. This dynamically changes the degree of expansion of the central chamber 303 and the two side chambers 302 of the airbag, enabling the central chamber 303 and the side chambers 302 of the airbag to dynamically apply pressure to different positions of the affected area, thus avoiding pressure sores during fixation.

[0039] Specifically, the ventilation assembly includes a counterweight ball 404 and a counterweight block 403. The counterweight block 403 can be a spherical structure and is made of a high-density material, such as tungsten alloy. Its mass is greater than that of the counterweight ball 404. Under the active displacement of the patient, the balance of the center position of the ventilation seat 402 changes, causing the counterweight ball 404 and the counterweight block 403 to slide back and forth in the ventilation seat 402. This allows the gas in the ventilation seat 402 to be alternately delivered to the two side chambers 302 of the airbag or the central chamber 303 of the airbag, achieving a dynamic pressure effect in the two side chambers 302 and the central chamber 303 of the airbag.

[0040] This application employs the synergistic effect of counterweight ball 404 and counterweight block 403 to further ensure the smooth movement of counterweight ball 404 and counterweight block 403 within the ventilation seat 402. When the ventilation seat 402 is tilted towards the counterweight ball 404, the counterweight block 403 can provide the counterweight ball 404 with an accelerating impact force, causing the counterweight ball 404 to accelerate and move to one side of the ventilation seat 402. When the ventilation seat 402 is tilted towards the counterweight block 403, the counterweight ball 404, due to its light weight, reacts quickly, thereby further pushing the counterweight block 403 to move rapidly to the other side of the ventilation seat 402.

[0041] For example, when patients move around in their daily lives, the device moves back and forth, left and right, up and down, following the body's movement. When the device is affected by external factors and its position and angle change, the counterweight ball 404 and counterweight block 403 change their positions accordingly and roll back and forth at both ends in the air exchange seat 402. In this mode, the central chamber 303 and the side chamber 302 of the airbag automatically perform a certain degree of pressure conversion, dynamically applying pressure and massaging the corresponding affected area, reducing the chance of pressure sores and promoting blood circulation, and improving the comfort of fixation.

[0042] In this embodiment, the air pressure compensation mechanism 5 includes a first air pressure compensation component 501 and two second air pressure compensation components 502. The first air pressure compensation component 501 is fixedly embedded in one end of the clamp body 1, and one end is connected to the ventilation chamber 401 and the airbag central chamber 303 through a three-way pipe. The two second air pressure compensation components 502 are symmetrically embedded in the other end of the clamp body 1, and one end is connected to the ventilation chamber 401 and the airbag central chamber 303 through a corresponding three-way pipe. At the same time, the two second air pressure compensation components 502 are also connected to the two airbag side chambers 302 respectively.

[0043] The compensation goals of the air pressure compensation mechanism 5 are: to maintain skin pressure of 18–25 mmHg; safe and effective skin pressure of limbs: 15–30 mmHg (2–4 kPa); internal pressure of the airbag splint: 35–55 mmHg (4.7–7.3 kPa); to reduce swelling by 20–30% during the swelling period; and to maintain low to medium pressure during the recovery period.

[0044] When the air pressure in the two independent chambers within the ventilation chamber 401 is changed, the air pressure in the first air pressure compensation component 501 and the two second air pressure compensation components 502 will be changed accordingly, thereby dynamically changing the pressure in the airbag central chamber 303 and the airbag side chamber 302.

[0045] Specifically, the first air pressure compensation component 501 and the two second air pressure compensation components 502 have the same structure, each including a sleeve 5011, two pistons 5012 and an elastic element 5013. One end of the sleeve 5011 is connected to the ventilation chamber 401. Specifically, one end of the sleeve 5011 on the first air pressure compensation component 501 is connected to one end of the ventilation chamber 401, and one end of the sleeve 5011 on the two second air pressure compensation components 502 is connected to the other end of the ventilation chamber 401.

[0046] One of the two pistons 5012 is fixedly embedded in the distal end of the sleeve 5011, while the other is movably disposed in the proximal end of the sleeve 5011. In use, the proximal piston 5012 moves toward the distal piston 5012, while the distal piston 5012 remains stationary. The elastic element 5013 is preferably a spring or a spring plate, which is connected between the two pistons 5012 and is used to drive the proximal piston 5012 to move.

[0047] To facilitate observation of the movement of the proximal piston 5012, the part of the clamp body 1 corresponding to the proximal piston 5012 is set as a rectangular transparent window, and scale lines are set on the rectangular transparent window, so as to conveniently observe the movement of the proximal piston 5012 and thus calculate the pressure applied to the airbag central chamber 303 and the airbag side chamber 302.

[0048] When the air pressure in the first air pressure compensation component 501 and the two second air pressure compensation components 502 changes under the action of the counterweight ball 404 and the counterweight block 403, while dynamically changing the pressure in the central chamber 303 and the side chamber 302 of the airbag, it also pushes the proximal piston 5012 to compress the elastic element 5013 to move towards the distal piston 5012, and the spring restores its elasticity to push the proximal piston 5012 back to its position, thereby further driving the counterweight ball 404 and the counterweight block 403 to move.

[0049] During the swelling reduction process, the elastic element 5013 pushes the piston 5012 outward, automatically maintaining the airbag pressure at 4.5–6 kPa. By adjusting the parameters of the elastic element 5013, the cross-sectional area of ​​the piston 5012 and the sleeve 5011, a suitable fit can be achieved. For example, an elastic element 5013 with a wire diameter of 0.3 mm, a median diameter of 3.5 mm, an effective number of coils of 20, and a stiffness of 0.09 N / mm, combined with a 45 mm² piston 5012, can achieve automatic air pressure compensation of 4.5–6 kPa, meeting the pressure maintenance requirements during the swelling reduction process of the limb after fracture.

[0050] The principle of using a traditional Chinese medicine orthopedic splint according to an embodiment of this application is as follows: First, according to the degree of swelling of the patient's affected limb and the pressure application requirements, the two side chambers 302 and the central chamber 303 of the airbag are inflated. Then, the splint body 1 is fixed to the patient using the fixing strap 2, and the two side chambers 302 and the central chamber 303 of the airbag are in close contact with the key areas of the patient that need to be fixed and pressurized.

[0051] When the patient's active self-displacement (daily arm or leg movements) causes a change in the balance of the center position of the air exchange seat 402, such as when the air exchange seat 402 tilts to one side, that is, when the air exchange seat 402 tilts towards the counterweight ball 404, the counterweight block 403 can give the counterweight ball 404 an accelerating impact force, causing the counterweight ball 404 to accelerate to the side of the air exchange seat 402, thereby simultaneously squeezing the gas in the air exchange seat 402 into the first air pressure compensation component 501 and the central chamber 303 of the airbag, thereby increasing the expansion pressure of the central chamber 303 of the airbag, and at the same time causing the proximal piston 5012 to move towards the distal piston 5012, and compressing the elastic element 5013.

[0052] When the air exchange seat 402 tilts to the other side, that is, when the air exchange seat 402 is tilted towards the counterweight block 403, the counterweight ball 404 further pushes the counterweight block 403 to move quickly to the other side of the air exchange seat 402, thereby squeezing the gas in the air exchange seat 402 into the second air pressure compensation component 502 and the two airbag side chambers 302 at the same time, so that the expansion pressure of the two airbag side chambers 302 increases. At the same time, the elastic element 5013 returns to its original deformation and pushes the proximal piston 5012 away from the distal piston 5012, further pushing the counterweight ball 404 forward and slightly changing the applied pressure of the two airbag side chambers 302.

[0053] During the movement of the proximal piston 5012, the movement of the proximal piston 5012 can be observed through the transparent window, thereby deduce the pressure applied to the central chamber 303 and the side chamber 302 of the airbag.

[0054] Example 2: This embodiment further includes an active adjustment component 6, which is mounted on the splint body 1 and works in conjunction with the ventilation chamber 401. It is used to actively change the air pressure in the independent chambers at both ends of the ventilation chamber 401, thereby adapting to the patient's rehabilitation training and, during the training process, dynamically adjusting the pressure of the central chamber 303 and the side chambers 302 of the airbag to a greater extent, so as to achieve active training, promote blood circulation, and further prevent pressure sores.

[0055] In the embodiments of this application, reference is made to the appendix. Figures 8-14 As shown, the active adjustment component 6 includes a pull rope 601, a positioning component 602, a drive component 603, and a ventilation component 604. The pull rope 601 is a non-elastic pull rope, one end of which is movably inserted into the end of the clamping plate body 1 and can slide relative to the end of the clamping plate body 1. The positioning component 602 can be a bolt, which is movably inserted into the clamping plate body 1 through the cover 6011 and is threadedly connected to the cover 6011, and can move up and down relative to the cover 6011 and be positioned.

[0056] The drive assembly 603 is slidably mounted on the clamp body 1 and works in conjunction with the positioning member 602. The end of the drive assembly 603 is also connected to the pull rope 601. The ventilation assembly 604 is movably inserted into the ventilation chamber 401, located within the ventilation seat 402, and engages with the drive assembly 603. In use, the positioning member 602 positions the drive assembly 603 on the clamp body 1, and the drive assembly 603, in conjunction with the pull rope 601, drives the ventilation assembly 604. This cyclically changes the air pressure in the independent chambers at both ends of the ventilation chamber 401, thereby cyclically changing the air pressure between the two airbag side chambers 302 and the airbag central chamber 303. This results in a dynamic pressure state between the two airbag side chambers 302 and the airbag central chamber 303, preventing pressure sores and providing corresponding massage.

[0057] For details, please refer to the appendix. Figure 12 As shown, the drive assembly 603 includes an L-shaped rack 6031 and an elastic element 6032. The L-shaped rack 6031 meshes with the ventilation assembly 604 and its end is fixedly connected to the pull rope 601. By pulling the free end of the pull rope 601, the L-shaped rack 6031 can be moved on the clamp body 1. The elastic element 6032 is a spring or spring sheet, one end of which is fixedly connected to the pull rope 601 and the other end is fixedly connected to the outer wall of the ventilation chamber 401. During the movement of the L-shaped rack 6031, the elastic element 6032 will be stretched.

[0058] See attached document Figure 11 As shown, the ventilation assembly 604 includes a gear 6041 and a vane pump 6042. The vane pump 6042 is fixed at the center of the ventilation base 402 by a headless screw. It is used to transport gas from the independent chamber on one side of the ventilation chamber 401 to the chamber on the other side, and then to the two airbag side chambers 302 and the airbag central chamber 303 corresponding to the two independent chambers on both sides. The gear 6041 is fixed to the vane pump 6042. Rotating the gear 6041 drives the vane pump 6042 to work.

[0059] In the initial state, the elastic element 6032 is stretched, and the positioning element 602 is positioned on the L-shaped rack 6031. When the positioning element 602 is manually turned to release its positioning on the L-shaped rack 6031, the elastic element 6032, in order to restore its deformation, drives the L-shaped rack 6031 and the pull rope 601 to move towards the gear 6041, thereby pushing the gear 6041 to rotate. The rotation of the gear 6041 drives the vane pump 6042 to work, thereby transporting the gas in the independent chamber on the left side of the ventilation chamber 401 to the chamber on the right side, and finally into the two airbag side chambers 302. When the gear 6041 rotates in the opposite direction, the gas in the independent chamber on the right side of the ventilation chamber 401 is transported to the chamber on the left side, and finally into the airbag central chamber 303.

[0060] In practical applications, the active adjustment component 6 can be driven in conjunction with the training of other uninjured joints near the affected area. While applying pressure and clamping to the patient, it can also prevent pressure sores, massage the patient to promote blood circulation, and meet the training needs of the joints.

[0061] Specifically, during training, the 601 pull rope can be attached to the patient's body or other objects. For example, if the arm is injured, the 601 pull rope can be attached to the finger, and if the leg is injured, the 601 pull rope can be attached to the upper hand or other objects.

[0062] The principle of using a traditional Chinese medicine orthopedic splint according to an embodiment of this application includes: This embodiment uses training corresponding to an arm injury as an example to illustrate the principle. First, the pull rope 601 is hung on the finger. Twisting the positioning component 602 causes the elastic component 6032 to recover its deformation, which in turn moves the L-shaped rack 6031 and the pull rope 601 towards the gear 6041, thereby pushing the gear 6041 to rotate. The rotation of the gear 6041 drives the vane pump 6042 to work, thereby transporting the gas from the independent chamber on the left side of the ventilation chamber 401 to the chamber on the right side, and finally into the two airbag side chambers 302. At this time, the elastic component 6032 recovers its deformation.

[0063] Then, by stretching the free end of the pull rope 601 with a finger, the L-shaped rack 6031 is stretched towards the finger, causing the gear 6041 to rotate in the opposite direction and compressing the elastic element 6032. The reverse rotation of the gear 6041 transports the gas in the independent chamber on the right side of the ventilation chamber 401 to the chamber on the left side, and finally into the central chamber 303 of the airbag.

[0064] The principle of using a traditional Chinese medicine orthopedic splint in this application includes: First, according to the degree of swelling of the patient's affected limb and the pressure application requirements, the two side chambers 302 and the central chamber 303 of the airbag are inflated. Then, the splint body 1 is fixed to the patient using the fixation strap 2, and the two side chambers 302 and the central chamber 303 of the airbag are in close contact with the key areas of the patient that require fixation and pressure.

[0065] When the patient's active self-displacement (daily arm or leg movements) causes a change in the balance of the center position of the air exchange seat 402, such as when the air exchange seat 402 tilts to one side, that is, when the air exchange seat 402 tilts towards the counterweight ball 404, the counterweight block 403 can give the counterweight ball 404 an accelerating impact force, causing the counterweight ball 404 to accelerate to the side of the air exchange seat 402, thereby simultaneously squeezing the gas in the air exchange seat 402 into the first air pressure compensation component 501 and the central chamber 303 of the airbag, thereby increasing the expansion pressure of the central chamber 303 of the airbag, and at the same time causing the proximal piston 5012 to move towards the distal piston 5012, and compressing the elastic element 5013.

[0066] When the air exchange seat 402 tilts to the other side, that is, when the air exchange seat 402 is tilted towards the counterweight block 403, the counterweight ball 404 further pushes the counterweight block 403 to move quickly to the other side of the air exchange seat 402, thereby squeezing the gas in the air exchange seat 402 into the second air pressure compensation component 502 and the two airbag side chambers 302 at the same time, so that the expansion pressure of the two airbag side chambers 302 increases. At the same time, the elastic element 5013 returns to its original deformation and pushes the proximal piston 5012 away from the distal piston 5012, further pushing the counterweight ball 404 forward and slightly changing the applied pressure of the two airbag side chambers 302.

[0067] During the movement of the proximal piston 5012, the movement of the proximal piston 5012 can be observed through the transparent window, thereby deduce the pressure applied to the central chamber 303 and the side chamber 302 of the airbag.

[0068] When daily training or massage is required, first, hang the pull rope 601 on the finger, and turn the positioning part 602. The elastic part 6032 will restore its deformation, which will drive the L-shaped rack 6031 and the pull rope 601 to move towards the gear 6041, thereby pushing the gear 6041 to rotate. The rotation of the gear 6041 will drive the vane pump 6042 to work, thereby transporting the gas in the independent chamber on the left side of the ventilation chamber 401 to the chamber on the right side, and finally into the two airbag side chambers 302. At this time, the elastic part 6032 will restore its deformation.

[0069] Then, by stretching the free end of the pull rope 601 with a finger, the L-shaped rack 6031 is stretched towards the finger, causing the gear 6041 to rotate in the opposite direction and compressing the elastic element 6032. The reverse rotation of the gear 6041 transports the gas in the independent chamber on the right side of the ventilation chamber 401 to the chamber on the left side, and finally into the central chamber 303 of the airbag.

[0070] During this training process, the movement of the proximal piston 5012 is much greater than the change caused by the patient's own active displacement. The patient can observe the movement of the proximal piston 5012 through the transparent window, and then calculate the pressure applied to the central chamber 303 and the side chamber 302 of the airbag.

[0071] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A traditional Chinese medicine orthopedic splint, comprising a splint body (1) and a plurality of fixing straps (2) disposed on both sides of the splint body (1), characterized in that, Also includes: An airbag expansion layer (3) is set on one side of the splint body (1) to apply pressure to the affected area; An automatic pressure-changing mechanism (4) is located inside the other side of the clamp body (1) and is connected to the airbag inflation layer (3). It is used to change the air pressure distribution in the airbag inflation layer (3) by utilizing the user's own displacement. The air pressure compensation mechanism (5) is connected to the airbag expansion layer (3) and the automatic pressure switching mechanism (4) and is used to balance and regulate the air pressure changes in the airbag expansion layer (3).

2. The traditional Chinese medicine orthopedic splint according to claim 1, characterized in that, The airbag inflation layer (3) includes: The airbag inflation layer body (301) is disposed on one side of the clamp body (1) along the length direction of the clamp body (1); Two airbag side chambers (302) are independently opened at both ends of the airbag inflation layer body (301) and are simultaneously connected to the automatic pressure changing mechanism (4); The central chamber (303) of the airbag is independently located between the two side chambers (302) of the airbag and is connected to the automatic pressure changing mechanism (4). The volume of the central chamber (303) of the airbag is larger than that of the side chambers (302) of the airbag.

3. A traditional Chinese medicine orthopedic splint according to claim 2, characterized in that, The automatic pressure changing mechanism (4) includes: The air exchange chamber (401) is set on the splint body (1), with one end connected to the two airbag side chambers (302) respectively, and the other end connected to the airbag central chamber (303); The air exchange seat (402) is located in the center of the air exchange chamber (401), dividing the inner cavity of the air exchange chamber (401) into two independent chambers. The two ends of the air exchange seat (402) are respectively connected to the two independent chambers. Two sets of ventilation components are symmetrically and movably embedded on both sides of the ventilation seat (402) to change the air pressure at both ends of the ventilation chamber (401).

4. A traditional Chinese medicine orthopedic splint according to claim 3, characterized in that, The ventilation assembly includes a counterweight ball (404) and a counterweight block (403).

5. A traditional Chinese medicine orthopedic splint according to claim 3, characterized in that, The air pressure compensation mechanism (5) includes: The first air pressure compensation component (501) is embedded in one end of the clamp body (1), and one end is connected to the ventilation chamber (401) and the airbag central chamber (303) respectively. Two second air pressure compensation components (502) are symmetrically embedded at the other end of the clamp body (1), and one end is connected to the air exchange chamber (401) and the airbag central chamber (303) respectively. At the same time, the two second air pressure compensation components (502) are also connected to the two airbag side chambers (302) respectively.

6. A traditional Chinese medicine orthopedic splint according to claim 5, characterized in that, The first pressure compensation component (501) and the second pressure compensation component (502) have the same structure, both including: The sleeve (5011) is connected at one end to the ventilation chamber (401); Two pistons (5012), one of which is fixedly embedded in the distal end of the sleeve (5011), and the other is movably disposed in the proximal end of the sleeve (5011); The elastic element (5013) is connected between the two pistons (5012) and is used to drive the proximal piston (5012) to move.

7. A traditional Chinese medicine orthopedic splint according to claim 3, characterized in that, The clamp also includes an active adjustment component (6), which is disposed on the clamp body (1) and used in conjunction with the ventilation chamber (401) to actively change the air pressure in the independent chambers at both ends of the ventilation chamber (401).

8. A traditional Chinese medicine orthopedic splint according to claim 7, characterized in that, The active adjustment component (6) includes: A pull rope (601) is movably inserted at one end into the end of the clamp body (1); The positioning component (602) is movably inserted into the clamp body (1) via the cover (6011); The drive assembly (603) is slidably mounted on the clamp body (1) and works in conjunction with the positioning member (602). The end of the drive assembly (603) is also connected to the pull rope (601). The ventilation assembly (604) is movably inserted into the ventilation chamber (401), disposed in the ventilation seat (402), and engages with the drive assembly (603).

9. A traditional Chinese medicine orthopedic splint according to claim 8, characterized in that, The driver component (603) includes: L-shaped rack (6031) engages with ventilation assembly (604) and its end is connected to pull rope (601); The second elastic element (6032) is connected at one end to the pull rope (601) and at the other end to the outer wall of the ventilation chamber (401).

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