An orthopedic fixation splint device and method of use

Abstract

The application relates to the field of orthopedic fixing splints, in particular to an orthopedic fixing splint device and a using method, which comprises two main sleeves in ring-shaped clamping, and a plurality of semicircular sub-sleeves are arranged on the two sides of the main sleeves; an arc-shaped splint for clamping a limb is movably arranged in the main sleeve. The orthopedic fixing splint device can realize the alternate expansion and contraction switching of two arc-shaped splints on the same side by rotating the limiting screw and pushing and pulling the adjusting arc plate, changes the clamping stress point of the fractured area of the limb, effectively avoids the problems of ischemia, numbness, pressure sores and even ulceration of the local skin caused by long-term pressure, reduces the incidence of skin complications during fixation, and adapts to the wearing demand of the long healing period of the fracture.

Description

Technical Field

[0001] This invention relates to the field of orthopedic fixation splints, specifically to an orthopedic fixation splint device and its method of use. Background Technology

[0002] In the field of orthopedic fracture fixation, balancing stable clamping after limb fracture with postoperative rehabilitation is the core contradiction in clinical treatment. Existing fracture fixation splints mostly adopt a single rigid covering structure or fixed clamping scheme. Although they can ensure the stability of the fracture ends to a certain extent, they have many insurmountable technical defects, which seriously restrict the clinical treatment effect and the patient's rehabilitation experience.

[0003] The following problems in existing technologies have not been adequately addressed: 1. The arc-shaped clamping components of existing splints are mostly fixed designs, which can only fix the fracture site of the limb for a long time through a single clamping point. However, during the process of wearing the splint, the patient's limb is prone to local skin ischemia and numbness due to long-term pressure, which can lead to complications such as pressure sores and skin ulcers. This not only increases the patient's pain, but may also indirectly affect the fracture healing process due to skin damage; 2. When achieving rigid fixation of the fracture ends, existing splints often use a large-area covering and overall locking method to restrain the fracture site and adjacent joints together. This cannot achieve a dynamic and static fixation mode of "continuous rigid clamping of the fracture ends and controllable movement of the joints at both ends". If the stability of the fracture ends is to be ensured, the joint movement must be completely restricted, which can easily lead to problems such as muscle atrophy, joint stiffness, and poor blood circulation, which seriously affect postoperative rehabilitation. Summary of the Invention

[0004] The purpose of this invention is to provide an orthopedic fixation splint device and its method of use, so as to solve the problems mentioned in the background art. To achieve the above objective, this invention provides the following technical solution: an orthopedic fixation splint device, comprising two main sleeves that are engaged in a ring shape, and a plurality of semi-circular secondary sleeves are respectively provided on both sides of the main sleeves, wherein an arc-shaped splint for clamping the limb is movably installed inside the main sleeves; It also includes adjustment mechanisms respectively set on both sides of the main sleeve, used to switch the clamping state of the two arc-shaped clamps on the same side; The movable switching mechanism, which is installed between the main sleeve and the slave sleeve and works in conjunction with the adjusting mechanism, is used to switch the dynamic and static states of the slave sleeve.

[0005] Preferably, the adjustment mechanism includes a guide arc groove formed on the surface of the main sleeve, an adjustment arc plate is slidably disposed inside the guide arc groove, and a horizontal adjustment block is movably installed between the middle part of the adjustment arc plate and the surface of the main sleeve; Adjustment grooves are formed on the surface of the main sleeve and distributed on both sides of the guide arc groove, and the arc-shaped clamp is slidably disposed inside the corresponding adjustment groove; Adjustment blocks are symmetrically fixedly connected to the surface of the arc-shaped clamping plate. Telescopic spring rods are symmetrically fixedly connected to both sides of the adjustment arc plate, and the two telescopic spring rods correspond one-to-one with the two adjustment blocks.

[0006] Preferably, a groove is formed in the middle of the adjusting arc plate, and an adjusting rod is fixedly connected between the two sides of the inner wall of the groove. The horizontal adjusting block is slidably disposed on the surface of the adjusting rod, and compression springs are respectively sleeved on both sides of the adjusting rod. The surface of the main sleeve is provided with a horizontal groove that cooperates with the horizontal adjustment block, and an adjustment screw is rotatably installed inside the horizontal groove. One end of the adjustment screw is rotatably installed on the surface of the horizontal adjustment block.

[0007] Preferably, a limiting block is horizontally slidably disposed between the two sides of the inner wall of the guide arc groove, and a limiting screw is slidably disposed on the surface of the limiting block, with one end of the limiting screw threadedly connected to the surface of the adjusting arc plate; The inner wall of the guide arc groove is provided with a limiting arc groove that cooperates with the telescopic spring rod. The side of the telescopic spring rod away from the adjusting arc plate overlaps with the surface of the corresponding adjusting block. The adjusting blocks on the left and right sides of the adjusting arc plate have opposite tilting directions, and the two adjusting blocks on the same side have the same tilting direction.

[0008] Preferably, the dynamic-static switching mechanism includes: a transmission sleeve symmetrically fixedly connected to both sides of the horizontal adjustment block, and a main gear is rotatably connected inside the transmission sleeve, and the surface of the main sleeve is provided with a tooth groove that meshes with the main gear. A driven gear is rotatably disposed inside the transmission sleeve and meshes with the main gear. A take-up wheel is fixedly connected to the top of the driven gear through the transmission sleeve. A take-up rope is wound around the surface of the take-up wheel, and one end of the take-up rope passes through several sleeves on the same side and is fixedly connected to the surface of the outermost sleeve. An auxiliary pressure strip is hinged between two adjacent sleeve inner walls.

[0009] Preferably, the meshing position of the main gear and the driven rack is configured as a large and small gear structure, and the position of the transmission sleeve near the tooth groove is set as an opening.

[0010] Preferably, a positioning pin is fixedly connected to one side of the sleeve, and a positioning hole that mates with the positioning pin is opened on the other side of the sleeve. Each of the two adjacent sleeve sidewalls is provided with a spring groove, and an unfolding spring is fixedly connected between the two spring grooves.

[0011] Preferably, the outer ring of the auxiliary pressure strip and the inner ring of the sleeve are respectively provided with grooves, and a hinge rod is fixedly connected between the two sides of the inner wall of the groove. The hinge rods on the surface of the auxiliary pressure strip are symmetrically hinged with connecting rods, and the two connecting rods are respectively hinged to the hinge rod surfaces of two adjacent sleeves.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: In this invention, through the adjustment mechanism set inside the main sleeve, relying on the linkage of the guide arc groove, the adjustment arc plate, the telescopic spring rod and the adjustment inclined block, the two arc-shaped splints on the same side can be alternately stretched and switched by rotating the limiting screw and pushing and pulling the adjustment arc plate without removing the rigid clamping of the fracture site or affecting the stability of the fracture ends. This changes the clamping force point of the limb fracture area, effectively avoiding ischemia, numbness, pressure sores and even ulceration caused by long-term pressure on the local skin, reducing the incidence of skin complications during fixation, and adapting to the wearing needs of the long-term fracture healing period.

[0013] In this invention, the mechanical decoupling of the fracture site and non-fracture site is achieved through the linkage transmission of the dynamic-static switching mechanism and the adjustment mechanism. The core fracture area is always rigidly and statically fixed by the main sleeve and the arc-shaped splint, while the non-fracture site can be moved by adjusting the horizontal adjustment block through the adjustment screw, which drives the transmission sleeve, the main gear and the driven gear to mesh and control the winding wheel to wind up and unwind the rope. This achieves bidirectional switching between closing and unfolding the sleeve. When the sleeve closes, the auxiliary pressure strip presses the limb to form static protection, ensuring the stability of the fracture fixation in the acute phase. When the sleeve unfolds, the auxiliary pressure strip releases the pressure constraint, and the patient can perform small-range voluntary movements of the non-fracture site to promote local blood circulation and effectively prevent complications such as muscle atrophy and joint stiffness that are easily caused by traditional fixation splints. Rehabilitation exercises can be completed without disassembling the device, completely avoiding the risk of secondary damage to the fracture site during disassembly, and fully meeting the clinical treatment needs of different stages of fracture healing. Attached Figure Description

[0014] Figure 1 This is a perspective view of the main sleeve and the slave sleeve of the present invention; Figure 2 For the present invention Figure 1 Enlarged view of the structure at point A in the middle; Figure 3 This is a side sectional view of a partial position of the main sleeve and the adjusting arc plate of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of the structure at point B; Figure 5 This is a side sectional view of a portion of the main sleeve and adjusting groove of the present invention; Figure 6 This is a side sectional view of a portion of the main sleeve and guide arc groove of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of the structure at point C; Figure 8 This is a perspective view of the arc-shaped clamp and adjusting inclined block of the present invention; Figure 9 This is a side sectional view of a portion of the horizontal adjusting block and the transmission sleeve of the present invention; Figure 10 This is a perspective view of the present invention from a partial position of the sleeve and the unfolding spring; Figure 11 This is a cross-sectional view of the present invention from a partial location of the sleeve and auxiliary pressure strip; Figure 12 For the present invention Figure 11 Enlarged view of the structure at point D; Figure 13 This is a side sectional view of a portion of the main sleeve and the horizontal adjusting block of the present invention.

[0015] In the diagram: 1. Main sleeve; 2. Slave sleeve; 3. Arc-shaped clamping plate; 4. Adjustment mechanism; 401. Guide arc groove; 402. Adjusting arc plate; 403. Horizontal adjusting block; 404. Adjusting groove; 405. Adjusting inclined block; 406. Telescopic spring rod; 407. Sinking groove; 408. Adjusting rod; 409. Compression spring; 410. Horizontal groove; 411. Adjusting screw; 412. Limiting block; 413. Limiting screw; 5. Dynamic-static switching mechanism; 501. Transmission sleeve; 502. Main gear; 503. Driven gear; 504. Rewinding wheel; 505. Rewinding rope; 506. Auxiliary pressure bar; 507. Unwinding spring; 508. Groove; 509. Hinge rod; 510. Connecting rod; 511. Gear groove. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Please see Figures 1 to 13 This invention provides a technical solution: an orthopedic fixation splint device, comprising two main sleeves 1 that are annularly engaged, and several semi-circular secondary sleeves 2 are respectively provided on both sides of the main sleeves 1. An arc-shaped splint 3 for clamping the limb is movably installed inside the main sleeves 1. It should be noted that: mounting screws and mounting washers are provided between the two main sleeves 1 for engaging and fixing the two main sleeves 1; an air-cushioned clamp is installed in the middle of the inner wall of the main sleeve 1 for clamping the fracture site. The air-cushioned clamp is prior art and will not be described in detail here; spring-loaded pins can be installed between the contact ends of the upper and lower secondary sleeves 2 to stably form an annular shape between the upper and lower corresponding secondary sleeves 2, while facilitating subsequent disassembly.

[0018] It also includes adjustment mechanisms 4 respectively located on both sides of the main sleeve 1, used to switch the clamping state of the two arc-shaped clamps 3 on the same side. It should be noted that: arc-shaped clamps 3 are symmetrically arranged on both sides of the main sleeve 1, and the two arc-shaped clamps 3 on the same side are used in a staggered manner to avoid a single arc-shaped clamp 3 clamping the patient's limb for a long time, which may cause discomfort such as skin ischemia and numbness.

[0019] The movable switching mechanism 5, installed between the main sleeve 1 and the secondary sleeve 2 and driven by the adjusting mechanism 4, is used to switch the dynamic and static states of the secondary sleeve 2. It should be noted that when the secondary sleeve 2 is switched to static, it works with the main sleeve 1 to provide stable protection for the limb. When the secondary sleeve 2 is switched to dynamic, the patient can perform small movements on non-fractured areas to improve blood circulation.

[0020] In this embodiment, as Figures 1 to 13 As shown, the adjustment mechanism 4 includes a guide arc groove 401 formed on the surface of the main sleeve 1. An adjustment arc plate 402 is slidably disposed inside the guide arc groove 401. A horizontal adjustment block 403 is movably installed between the middle of the adjustment arc plate 402 and the surface of the main sleeve 1. It should be noted that the horizontal position of the adjustment arc plate 402 inside the guide arc groove 401 is adjusted by the horizontal adjustment block 403.

[0021] Adjustment grooves 404 are formed on the surface of the main sleeve 1 and distributed on both sides of the guide arc groove 401. The arc-shaped clamping plate 3 is slidably disposed inside the corresponding adjustment groove 404. It should be noted that a tension spring rod is fixedly connected between the inner wall of the adjustment groove 404 and the arc-shaped clamping plate 3, so as to facilitate the arc-shaped clamping plate 3 to retract into the adjustment groove 404.

[0022] Adjusting inclined blocks 405 are symmetrically fixedly connected to the surface of the arc-shaped clamping plate 3. Telescopic spring rods 406 are symmetrically fixedly connected to both sides of the adjusting arc plate 402, with each telescopic spring rod 406 corresponding to one of the two adjusting inclined blocks 405. It should be noted that since the adjusting arc plate 402 can slide circumferentially within the guide arc groove 401 inside the main sleeve 1, when the adjusting arc plate 402 rotates clockwise, it can drive one arc-shaped clamping plate 3 to extend through the cooperation of the telescopic spring rods 406 and the adjusting inclined blocks 405. Conversely, when the adjusting arc plate 402 rotates counterclockwise, it can drive the other arc-shaped clamping plate 3 to extend, thus switching the positions of the two arc-shaped clamping plates 3 on the same side. The telescopic spring rods 406 are designed so that after the adjusting arc plate 402 moves horizontally within the guide arc groove 401, it can still stably cooperate with the corresponding adjusting inclined block 405.

[0023] In this embodiment, as Figures 1 to 13As shown, a recessed groove 407 is formed in the middle of the adjusting arc plate 402. An adjusting rod 408 is fixedly connected between the two sides of the inner wall of the recessed groove 407. A horizontal adjusting block 403 is slidably disposed on the surface of the adjusting rod 408. Compression springs 409 are respectively sleeved on both sides of the adjusting rod 408. It should be noted that when the adjusting screw 411 is in the loose state, the two compression springs 409 cooperate with the horizontal adjusting block 403 to drive the adjusting arc plate 402 to slide to the initial state. It will not deflect inside the guide arc groove 401, and the telescopic spring rod 406 will no longer contact the adjusting inclined block 405.

[0024] The surface of the main sleeve 1 is provided with a transverse groove 410 that mates with the horizontal adjusting block 403, and an adjusting screw 411 is rotatably mounted inside the transverse groove 410. One end of the adjusting screw 411 is rotatably mounted on the surface of the horizontal adjusting block 403. It should be noted that a sliding groove is provided on the surface of the main sleeve 1 at the bottom of the transverse groove 410, and the horizontal adjusting block 403 is slidably mounted inside the sliding groove. The length of the transverse groove 410 is the same as the distance that the adjusting arc plate 402 moves horizontally within the guide arc groove 401. By rotating the adjusting screw 411, the positions of the horizontal adjusting block 403 and the adjusting arc plate 402 within the guide arc groove 401 can be restricted.

[0025] In this embodiment, as Figures 1 to 13 As shown, a limiting block 412 is horizontally slidably arranged between the two sides of the inner wall of the guide arc groove 401. A limiting screw 413 is slidably arranged on the surface of the limiting block 412, and one end of the limiting screw 413 is threadedly connected to the surface of the adjusting arc plate 402. It should be noted that the limiting block 412 and the limiting screw 413 may not be provided on the surface of the lower main sleeve 1. When the upper main sleeve 1 and the lower main sleeve 1 are fitted together, the adjusting arc plate 402 inside the upper main sleeve 1 can extend into the guide arc groove 401 opened on the surface of the lower main sleeve 1 during the circumferential rotation, thereby driving the adjusting arc plate 402 inside the lower main sleeve 1 to adjust its position, improving the convenience of operation; and the limiting block 412 has a guide groove opened on its surface along the circumferential direction of the main sleeve 1, and the limiting screw 413 is slidably arranged inside the guide groove.

[0026] The inner wall of the guide arc groove 401 is provided with a limiting arc groove that cooperates with the telescopic spring rod 406. The side of the telescopic spring rod 406 away from the adjusting arc plate 402 overlaps with the surface of the corresponding adjusting inclined block 405. The adjusting inclined blocks 405 on the left and right sides of the adjusting arc plate 402 have opposite inclination directions, and the two adjusting inclined blocks 405 on the same side have the same inclination direction. It should be noted that when the adjusting arc plate 402 rotates clockwise, the adjusting inclined block 405 on the right side is driven to move through the right telescopic spring rod 406, while when the adjusting arc plate 402 rotates counterclockwise, the adjusting inclined block 405 on the left side is driven to move through the left telescopic spring rod 406.

[0027] In this embodiment, asFigures 1 to 13 As shown, the dynamic-static switching mechanism 5 includes: a transmission sleeve 501 symmetrically fixedly connected to both sides of the horizontal adjustment block 403, and a main gear 502 rotatably connected inside the transmission sleeve 501. The surface of the main sleeve 1 is provided with a tooth groove 511 that meshes with the main gear 502 for transmission.

[0028] A driven gear 503, rotatably mounted inside the transmission sleeve 501 and meshing with the main gear 502, has a take-up reel 504 fixedly connected to its top through the transmission sleeve 501. A take-up rope 505 is wound around the surface of the take-up reel 504, and one end of the take-up rope 505 passes through several sleeves 2 on the same side and is fixedly connected to the surface of the outermost sleeve 2. It should be noted that when the adjusting screw 411 moves horizontally inside the main sleeve 1 with the horizontal adjusting block 403, the horizontal adjusting block 403 engages with the main gear 502 inside the transmission sleeve 501, which in turn engages with the toothed groove 511 on the surface of the main sleeve 1. This engagement of the main gear 502 with the driven gear 503 causes the take-up reel 504 to perform winding and unwinding operations, thereby enabling the several sleeves 2 on the same side to separate and engage.

[0029] An auxiliary pressure strip 506 is hinged between the inner walls of two adjacent sleeves 2. It should be noted that when the two adjacent sleeves 2 separate or come together, the hinged auxiliary pressure strip 506 will be driven to perform a loosening and tightening operation on the patient's skin surface; both the auxiliary pressure strip 506 and the surface of the arc-shaped clamp 3 are provided with protective pads to improve clamping comfort.

[0030] In this embodiment, as Figures 1 to 13 As shown, the meshing position of the main gear 502 and the driven rack 503 is configured as a large and small gear structure, and the position of the transmission sleeve 501 near the tooth groove 511 is open. It should be noted that: by setting the large and small gears, during the translation of the horizontal adjusting block 403, the meshing of the main gear 502 and the tooth groove 511 can drive the driven rack 503 to rotate several times, effectively winding the take-up rope 505. The size of the take-up wheel 504 can be changed according to actual use, and the take-up wheel 504 can be protruded from the main sleeve 1 to increase the winding effect; a guide wheel for guiding the take-up rope 505 is fixedly connected inside the main sleeve 1.

[0031] In this embodiment, as Figures 1 to 13 As shown, a positioning pin is fixedly connected to one side of the sleeve 2, and a positioning hole that mates with the positioning pin is opened on the other side of the sleeve 2. It should be noted that the positioning pin and the positioning hole mate to ensure the stability of the sleeve 2 after they are in contact.

[0032] Each of the two adjacent sleeves 2 has a spring groove on its side wall, and a deploying spring 507 is fixedly connected between the two opposite spring grooves. It should be noted that when the winding rope 505 is unwound, the deploying spring 507 elastically returns to its original state, and the two adjacent sleeves 2 are separated.

[0033] In this embodiment, as Figures 1 to 13 As shown, the outer ring of the auxiliary pressure strip 506 and the inner ring of the sleeve 2 are respectively provided with grooves 508. A hinge rod 509 is fixedly connected between the two sides of the inner wall of the groove 508. Connecting rods 510 are symmetrically hinged to the hinge rods 509 on the surface of the auxiliary pressure strip 506. Two connecting rods 510 are respectively hinged to the surfaces of the hinge rods 509 of two adjacent sleeves 2. It should be noted that the two connecting rods 510 are V-shaped. When the two sleeves 2 are in contact, the two connecting rods 510 drive the auxiliary pressure strip 506 to move towards the patient's skin. Conversely, when the two sleeves 2 are separated, the angle between the two connecting rods 510 increases, thereby driving the auxiliary pressure strip 506 away from the patient's skin and into a pressed state. Connecting rods 510 and auxiliary pressure strips 506 can also be hinged to the side wall of the main sleeve 1 and the side wall of the adjacent sleeve 2.

[0034] In this embodiment, as Figures 1 to 13 As shown, a method of using an orthopedic fixation splint device includes the following steps: S1. When the device is initially used, the secondary sleeves 2 on both sides of the main sleeve 1 are in a retracted and folded state. The two sets of main sleeves 1 are wrapped around the surface of the patient's limb in a ring shape. The arc-shaped splint 3 completes the rigid clamping and fixation of the fracture site, ensuring the stability of the fracture ends after initial reduction and avoiding displacement of the fracture ends.

[0035] S2. If the arc-shaped splint 3 clamps the patient's limb surface at a single point for a long time, causing local skin ischemia, numbness, discomfort, or pressure injury, first rotate the limiting screw 413 to move the end of the limiting screw away from the surface of the limiting block 412, thus releasing it from the limiting block 412. The compression limit between the two is then pushed and pulled by the limiting screw 413, which drives the adjusting arc plate 402 to slide circumferentially along the inside of the guide arc groove 401. During this process, the telescopic spring rods 406 on both sides of the adjusting arc plate 402 slide along the limiting arc groove trajectory on the inner wall of the guide arc groove 401, and simultaneously squeeze the adjusting inclined block 405 on the movement path. After the adjusting inclined block 405 is pressed, it drives the corresponding connected arc-shaped clamp 3 to extend out from the inside of the adjusting groove 404 and press tightly against the surface of the patient's limb. The other set of arc-shaped clamp 3 retracts into the corresponding adjusting groove 404 under the reset pulling action of the tension spring rod, thereby realizing the dynamic switching of the clamping points of the two sets of arc-shaped clamp 3, avoiding long-term single-point continuous pressure on the limb skin, and effectively improving the wearing comfort and long-term use tolerance of the device.

[0036] S3. During the rehabilitation phase, when patients need to perform small-range functional activities on non-fractured limbs to prevent complications such as muscle atrophy and joint stiffness, rotate the adjusting screw 411 to release its squeezing and limiting effect on the surface of the main sleeve 1. Then pull the adjusting screw 411 to drive the horizontal adjusting block 403 and the adjusting arc plate 402 to move axially along the corresponding guide arc groove 401, completing the position switching of the adjusting arc plate 402. During the translation, the transmission sleeve 501 on the side wall of the horizontal adjusting block 403 moves synchronously, so that the main gear 502 inside the transmission sleeve 501 and the pre-set tooth groove 51 on the surface of the main sleeve 1 are engaged. 1. A meshing transmission is formed, which drives the driven rack 503 and the take-up wheel 504 to rotate synchronously, realizing the unwinding operation of the take-up rope 505. Then, the elastic potential energy of the unfolding spring 507 between the two adjacent sets of sleeves 2 is released and reset, pushing several sleeves 2 on the side wall of the main sleeve 1 to separate at equal distances. After separation, the two sets of sleeves 2 are driven by the linkage of the connecting rod 510 and the hinge rod 509 to move the auxiliary pressure strip 506 away from the patient's limb, releasing the auxiliary pressure constraint, allowing the non-fractured parts of the patient's limb to perform small-range spontaneous movements, promoting local blood circulation and optimizing the postoperative rehabilitation effect of fracture.

[0037] S4. When the limb does not require functional exercise and needs to be restored to a static fixation state, the reverse operation is performed. The push-pull adjustment screw 411 moves the horizontal adjustment block 403 in the reverse direction inside the transverse groove, so that the main gear 502 and the tooth groove 511 mesh in the opposite direction. This drives the winding rope 505 to tighten, and simultaneously pulls several pieces from the sleeve 2 towards the main sleeve 1 to close and adhere to the limb. During this process, the connecting rod 510 and the hinge rod 509 work together to drive the auxiliary pressure strip 506 to press and adhere to the surface of the patient's limb again, restoring the static rigid fixation protection mode and ensuring the fixation stability and overall protection effect of the fracture site.

[0038] 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 preferred examples and are not intended to limit 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 the present invention is defined by the appended claims and their equivalents.

Claims

1. An orthopedic fixation splint device, comprising two main sleeves (1) that are engaged in a ring shape, and a plurality of semi-circular secondary sleeves (2) are respectively provided on both sides of the main sleeves (1), wherein an arc-shaped splint (3) for clamping the limb is movably installed inside the main sleeves (1). Its features are, Also includes: The adjustment mechanisms (4) respectively set on both sides of the main sleeve (1) are used to switch the clamping state of the two arc-shaped clamps (3) on the same side; The dynamic-static switching mechanism (5) is installed between the main sleeve (1) and the slave sleeve (2) and is driven by the adjusting mechanism (4) to switch the dynamic and static states of the slave sleeve (2).

2. The orthopedic fixation splint device according to claim 1, characterized in that: The adjustment mechanism (4) includes a guide arc groove (401) formed on the surface of the main sleeve (1), an adjustment arc plate (402) is slidably arranged inside the guide arc groove (401), and a horizontal adjustment block (403) is movably installed between the middle part of the adjustment arc plate (402) and the surface of the main sleeve (1). Adjustment grooves (404) are formed on the surface of the main sleeve (1) and distributed on both sides of the guide arc groove (401), and the arc-shaped clamp (3) is slidably disposed inside the corresponding adjustment groove (404); Adjustment blocks (405) are symmetrically fixedly connected to the surface of the arc-shaped clamp (3). Telescopic spring rods (406) are symmetrically fixedly connected to both sides of the adjustment arc plate (402). The two telescopic spring rods (406) correspond one-to-one with the two adjustment blocks (405).

3. The orthopedic fixation splint device according to claim 2, characterized in that: The adjusting arc plate (402) has a groove (407) in the middle, and an adjusting rod (408) is fixedly connected between the two sides of the inner wall of the groove (407). The horizontal adjusting block (403) is slidably disposed on the surface of the adjusting rod (408), and compression springs (409) are respectively sleeved on both sides of the adjusting rod (408). The surface of the main sleeve (1) is provided with a transverse groove (410) that cooperates with the horizontal adjustment block (403), and an adjustment screw (411) is rotatably provided inside the transverse groove (410), with one end of the adjustment screw (411) rotatably provided on the surface of the horizontal adjustment block (403).

4. The orthopedic fixation splint device according to claim 3, characterized in that: A limiting block (412) is horizontally slidably arranged between the two sides of the inner wall of the guide arc groove (401), and a limiting screw (413) is slidably arranged on the surface of the limiting block (412). One end of the limiting screw (413) is threadedly connected to the surface of the adjusting arc plate (402). The inner wall of the guide arc groove (401) is provided with a limiting arc groove that cooperates with the telescopic spring rod (406). The side of the telescopic spring rod (406) away from the adjusting arc plate (402) overlaps with the surface of the corresponding adjusting inclined block (405). The adjusting inclined blocks (405) on the left and right sides of the adjusting arc plate (402) have opposite tilting directions, and the two adjusting inclined blocks (405) on the same side have the same tilting direction.

5. The orthopedic fixation splint device according to claim 4, characterized in that: The dynamic-static switching mechanism (5) includes: a transmission sleeve (501) symmetrically fixedly connected to both sides of the horizontal adjustment block (403), and a main gear (502) is rotatably connected inside the transmission sleeve (501). The surface of the main sleeve (1) is provided with a tooth groove (511) that meshes with the main gear (502). A driven rack (503) is rotatably disposed inside the transmission sleeve (501) and meshes with the main gear (502). The top of the driven rack (503) passes through the transmission sleeve (501) and is fixedly connected to a winding wheel (504). A winding rope (505) is wound around the surface of the winding wheel (504), and one end of the winding rope (505) passes through several sleeves (2) on the same side and is fixedly connected to the surface of the outermost sleeve (2). An auxiliary pressure strip (506) is hinged between the inner walls of two adjacent sleeves (2).

6. The orthopedic fixation splint device according to claim 5, characterized in that: The meshing position of the main gear (502) and the driven rack (503) is configured as a large and small gear structure, and the position of the transmission sleeve (501) near the tooth groove (511) is set as an opening.

7. The orthopedic fixation splint device according to claim 6, characterized in that: A positioning pin is fixedly connected to one side of the sleeve (2), and a positioning hole that cooperates with the positioning pin is opened on the other side of the sleeve (2); Each of the two adjacent sleeves (2) has a spring groove on its side wall, and a deployment spring (507) is fixedly connected between the two spring grooves.

8. The orthopedic fixation splint device according to claim 7, characterized in that: The outer ring of the auxiliary pressure strip (506) and the inner ring of the sleeve (2) are respectively provided with grooves (508). A hinge rod (509) is fixedly connected between the two sides of the inner wall of the groove (508). A connecting rod (510) is symmetrically hinged to the hinge rod (509) on the surface of the auxiliary pressure strip (506). The two connecting rods (510) are respectively hinged to the surfaces of the hinge rods (509) of the two adjacent sleeves (2).

9. A method of using an orthopedic fixation splint device, characterized in that, Using an orthopedic fixation splint device as described in any one of claims 1-8 includes the following steps: S1. When used for the first time, the secondary sleeves (2) on both sides of the main sleeve (1) are in a folded state. The two sets of main sleeves (1) are wrapped around the surface of the patient's limb in a ring shape. The fracture site is rigidly clamped and fixed by the arc splint (3) to ensure the stability of the fracture ends and prevent displacement. S2. If the arc-shaped splint (3) causes local skin discomfort due to long-term single-point pressure, the limiting screw (413) can be rotated to drive the adjusting arc plate (402) to slide along the guide arc groove (401), so that one set of arc-shaped splints (3) extends to press the limb and the other set retracts, thereby realizing dynamic switching of the clamping point, avoiding continuous pressure and improving wearing comfort. S3. When small-scale functional activities are required during the rehabilitation period, rotate the adjusting screw (411) to drive the horizontal adjusting block (403) and the adjusting arc plate (402) to move axially. Drive the winding wheel (504) to unwind through gear transmission, unfold the spring (507) to push it to separate from the sleeve (2), and the auxiliary pressure strip (506) moves away from the limb, releasing the restraint, facilitating the patient's movement, and promoting blood circulation. S4. When static fixation needs to be restored, reverse the operation and pull the adjusting screw (411), tighten the winding rope (505), so that it is pulled from the sleeve (2) to the main sleeve (1), and the auxiliary pressure strip (506) presses the limb again to restore the rigid fixation mode, ensuring the stability of the fracture site and the overall protection effect.

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