Leg fracture positioning orthotic device

Abstract

This invention discloses a leg fracture positioning and orthotic device, belonging to the technical field of leg orthotic devices. It includes an orthotic component comprising a thigh fixation bracket with a lower leg fixation bracket hinged below it. A strap buckle is provided on one side of the thigh fixation bracket, and fixation holes are provided on the thigh fixation bracket and the lower leg fixation bracket. An adjustment component includes an adjustment element located on one side of the thigh fixation bracket. The advantages of this invention are: the orthotic component alone provides bed rest fixation and protection, and the bracket component can be quickly assembled to provide support for walking. The weight of the affected limb is supported by the supporting leg and foot, avoiding secondary injury to the lower leg. Switching between the two modes is convenient, adapting to the entire rehabilitation process for fracture patients.

Description

Technical Field

[0001] This invention relates to the field of medical technology, and in particular to a leg fracture positioning and orthopedic device. Background Technology

[0002] Lower limb fractures are a common orthopedic injury in clinical practice. During the rehabilitation period, patients need to rely on leg positioning and orthotic devices to fix the affected limb and prevent displacement of the fracture ends. Currently, the leg orthotic fixation devices commonly used in clinical practice are mostly composed of rigid arc-shaped brackets with straps for tightening, which has obvious shortcomings in use.

[0003] Traditional device straps provide static fixation, which can cause long-term continuous pressure on the thigh area, leading to poor local blood circulation, limb swelling, and even pressure sores, hindering fracture healing. In addition, the device has a single function and is only suitable for bed rest scenarios. When patients get out of bed and walk, there is no effective support, and the affected limb is prone to secondary injury due to stress. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the above and / or existing leg fracture positioning and orthopedic devices, the present invention is proposed.

[0006] Therefore, the problem that this invention aims to solve is that existing devices cannot simultaneously meet the needs of fixed protection, walking support, and comfortable rehabilitation.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a leg fracture positioning and orthopedic device, comprising an orthopedic component, including a thigh fixation bracket, a lower leg fixation bracket hinged below the thigh fixation bracket, a strap buckle provided on one side of the thigh fixation bracket, a fixation hole provided on the thigh fixation bracket, and a strap hole provided on the lower leg fixation bracket.

[0008] The adjustment assembly includes an adjustment member disposed on one side of the thigh fixation bracket. The adjustment member includes a support base fixed to one side of the thigh fixation bracket. The strap buckle slides within the support base. A rotating disk is rotatably connected within the support base. A pressing rod is fixed to one side of the rotating disk. A pressing groove is formed on the surface of the strap buckle. A worm gear is fixed to one side of the rotating disk via a rotating shaft. The worm gear is rotatably connected within the support base. A rotating rod is rotatably connected within the support base. Multiple worms are fixed to the surface of the rotating rod. The worms mesh with the worm gear.

[0009] As a preferred embodiment of the leg fracture positioning and orthopedic device of the present invention, it further includes a support assembly, comprising a support leg disposed on the surface of the orthopedic assembly, a plug fixed to one side of the support leg, a fixing sleeve fixed to one side of the thigh fixation bracket, a positioning pin sliding inside the support leg, a pull rod fixed to one side of the positioning pin, a first spring sleeved on the surface of the pull rod, a stabilizing seat fixed between the two support legs, a plug fixed to the top of the stabilizing seat, a socket fixed to the surface of the lower leg fixation bracket, a sliding rod sliding at the bottom of the support leg, a support foot fixed to the bottom of the sliding rod, and a second spring fixed inside the sliding rod.

[0010] As a preferred embodiment of the leg fracture positioning and orthopedic device of the present invention, the adjustment component further includes a driving member disposed on the surface of the thigh fixation bracket. The driving member includes a support shell fixed to the surface of the thigh fixation bracket. A rotating shaft is rotatably connected inside the support shell. A bevel gear is fixed on the surface of the rotating shaft. A bevel gear is also fixed on the surface of the rotating rod. The two bevel gears mesh with each other.

[0011] In a preferred embodiment of the leg fracture positioning and orthopedic device of the present invention, the driving component further includes a support rod rotatably connected to the support shell, a rotating wheel fixed at the end of the support rod, a locking plate rotatably connected inside the rotating wheel, a third spring fixed on one side of the locking plate, a driving gear rotatably connected to the surface of the rotating wheel, a slot formed in the inner wall of the driving gear, and a flexible transmission rod fixed between the support rod and the rotating shaft.

[0012] As a preferred embodiment of the leg fracture positioning and orthopedic device of the present invention, the driving component further includes a movable seat that slides within the support shell, a fourth spring fixed at one end of the movable seat, the other end of the fourth spring fixed to the inner wall of the support shell, limit strips provided on both sides of the movable seat, a slot corresponding to the limit strips being opened in the support shell, a rack fixed within the movable seat, and the rack meshing with the driving gear.

[0013] In a preferred embodiment of the leg fracture positioning and orthopedic device of the present invention, the support assembly further includes a power component disposed within the supporting leg. The power component includes a reversing tube fixed within the supporting leg, a cable sliding within the reversing tube, one end of the cable being fixed within the sliding rod, and a sliding strip being fixed at the other end of the cable. The sliding strip slides within the supporting leg, and a fifth spring is fixed at the other end of the sliding strip. The other end of the fifth spring is fixed to the inner wall of the supporting leg.

[0014] As a preferred embodiment of the leg fracture positioning and orthopedic device of the present invention, the power component further includes a drive housing fixed to one side of the slide bar, a drive block sliding inside the drive housing, an unlocking rod fixed to one side of the drive block, a pawl fixed to the other end of the drive block, and a locking strip fixed to the surface of the movable seat.

[0015] As a preferred embodiment of the leg fracture positioning and orthopedic device of the present invention, the thigh fixation bracket and the lower leg fixation bracket are arc-shaped brackets made of medical hard plastic that conform to the human leg, and a simple flexible pad is provided on the inner side of the bracket.

[0016] As a preferred embodiment of the leg fracture positioning and orthopedic device of the present invention, the supporting leg is made of a lightweight material with rigid support.

[0017] As a preferred embodiment of the leg fracture positioning and orthopedic device of the present invention, the bottom of the supporting foot is provided with an anti-slip pad.

[0018] The beneficial effects of this invention are:

[0019] The orthotic components can be used alone to provide bed rest and protection, or the brace components can be quickly assembled to provide support for getting out of bed and walking. The weight of the affected limb is supported by the supporting leg and supporting foot, avoiding secondary injury to the lower leg. The two modes can be switched easily, making it suitable for the entire rehabilitation process of fracture patients.

[0020] When the patient walks, the power component links the drive component and the adjustment component, and works with the flexible transmission rod to smoothly transmit power, automatically loosening the straps alternately to avoid poor blood circulation caused by long-term pressure. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A scene depicting a positioning and orthotic device for leg fractures.

[0023] Figure 2 A partial structural diagram of the thigh fixation frame of a leg fracture positioning and orthopedic device.

[0024] Figure 3 Another structural view of a leg fracture positioning and orthotic device.

[0025] Figure 4 Orthopedic device for leg fracture positioning Figure 3 Enlarged view of the structure at point A in the middle.

[0026] Figure 5 Orthopedic device for leg fracture positioning Figure 3 Enlarged view of the structure at point B in the middle.

[0027] Figure 6 This is a diagram of the sliding rod structure of a leg fracture positioning and orthopedic device.

[0028] Figure 7 A partial sectional view of the slide bar of a leg fracture positioning and orthosis device.

[0029] Figure 8 This is a structural diagram of the adjustment component of a leg fracture positioning and orthotic device.

[0030] Figure 9 A top-view structural diagram of the strap buckle of a leg fracture positioning and orthotic device.

[0031] Figure 10 A structural diagram of the movable seat of a leg fracture positioning and orthopedic device.

[0032] Figure 11 A cross-sectional view of the movable seat of a leg fracture positioning and orthotic device.

[0033] Figure 12 A cross-sectional view of the insert of a leg fracture positioning and orthopedic device.

[0034] In the diagram: Orthopedic component 1; Thigh fixation bracket 11; Lower leg fixation bracket 12; Strap buckle 13; Fixation hole 11-1; Strap hole 12-1; Adjustment component 3; Adjustment piece 31; Support base 311; Rotating disk 312; Compression rod 313; Compression groove 13-1; Worm gear 314; Rotating rod 315; Worm 316; Drive component 32; Support shell 321; Rotating shaft 322; Bevel gear 323; Support rod 324; Rotating wheel 325; Clamping plate 326; Third spring 327; Drive gear 328; Clamping slot 328-1; Flexible transmission Rod 3212; Moving seat 329; Fourth spring 3210; Rack 3211; Bracket assembly 2; Support leg 21; Insert block 22; Fixing sleeve 23; Positioning pin 24; Pull rod 25; First spring 26; Stabilizing seat 27; Insert rod 28; Socket 29; Slide rod 210; Support foot 211; Second spring 212; Power component 213; Reversing tube 2131; Cable 2132; Slide bar 2133; Fifth spring 2134; Drive housing 2135; Drive block 2136; Unlocking rod 2137; Pawl 2138; Locking bar 329-1. Detailed Implementation

[0035] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0037] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0038] Example 1, referring to Figures 1-3 , Figure 5 and Figure 9 This is the first embodiment of the present invention. This embodiment provides a leg fracture positioning and orthopedic device. The leg fracture positioning and orthopedic device includes an orthopedic component 1, including a thigh fixation bracket 11. A lower leg fixation bracket 12 is hinged below the thigh fixation bracket 11. The thigh fixation bracket 11 and the lower leg fixation bracket 12 are arc-shaped brackets made of medical hard plastic that fit the human leg. A simple flexible pad is provided on the inner side of the bracket. The surface of the flexible pad has honeycomb-shaped holes to ensure the breathability of the bracket.

[0039] A strap buckle 13 is provided on one side of the thigh fixation bracket 11, and a fixing hole 11-1 is provided on the thigh fixation bracket 11. The strap can pass through the buckle of the strap buckle 13 and the fixing hole 11-1, thereby fixing the patient's thigh in the thigh fixation bracket 11. Since there is a lot of flesh in the thigh, the strap will put pressure on the thigh. If it is for too long, it may affect blood circulation and be detrimental to the patient's recovery.

[0040] The lower leg fixation bracket 12 has strap holes 12-1. The strap holes 12-1 on the lower leg fixation bracket 12 are symmetrically arranged. The strap can pass through the symmetrically arranged strap holes 12-1, thereby fixing the patient's lower leg to the lower leg fixation bracket 12.

[0041] Adjustment component 3 includes an adjustment member 31 disposed on one side of the thigh fixation bracket 11. The adjustment member 31 includes a support base 311 fixed to one side of the thigh fixation bracket 11. There are four support bases 311, and four strap buckles 13 are slidably disposed within the four support bases 311. A rotating disk 312 is rotatably connected within the support base 311. A compression rod 313 is fixed to one side of the rotating disk 312. A compression groove 13-1 is formed on the surface of the strap buckle 13, and the compression rod 313 slides within the compression groove 13-1. Inside 3-1, a worm gear 314 is fixed to one side of the rotating disk 312 via a rotating shaft. The worm gear 314 is rotatably connected to the support base 311. A rotating rod 315 is rotatably connected inside the support base 311. The rotating rod 315 passes through the four support bases 311. Multiple worms 316 are fixed on the surface of the rotating rod 315. The worms 316 and the worm gear 314 mesh one by one. Each support base 311 is provided with a strap buckle 13, a rotating disk 312, a pressing rod 313, a worm gear 314, and a worm 316.

[0042] When the rotating rod 315 rotates, it drives the four worm gears 316 to rotate, which in turn drives the worm wheel 314 to rotate. This causes the worm wheel 314 to drive the rotating disk 312 to rotate via the rotating shaft. The rotating disk 312 then drives the pressing rod 313 to press against the pressing groove 13-1, thereby causing the strap buckle 13 to move within the support base 311. This changes the position of the strap buckle 13 relative to the fixing hole 11-1. The angles of the four rotating disks 312 within the four support bases 311 are different, with adjacent rotating disks 312 differing by 90 degrees. When the four rotating disks 312 rotate simultaneously, the four strap buckles 13 move back and forth in a regular pattern, thereby alternately loosening the straps on the strap buckles 13 and preventing the straps from compressing the thighs for an extended period of time.

[0043] Example 2, refer to Figures 8-11 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0044] Specifically, the adjustment component 3 also includes a drive component 32 disposed on the surface of the thigh fixation bracket 11. The drive component 32 includes a support shell 321 fixed to the surface of the thigh fixation bracket 11. A rotating shaft 322 is rotatably connected inside the support shell 321. A bevel gear 323 is fixed on the surface of the rotating shaft 322. A bevel gear 323 is also fixed on the surface of the rotating rod 315. The two bevel gears 323 mesh with each other. By rotating the rotating shaft 322, the bevel gear 323 can be driven to rotate. Through the transmission of the bevel gear 323, the rotating rod 315 is rotated.

[0045] The driving component 32 also includes a support rod 324 rotatably connected to the support housing 321. A rotating wheel 325 is fixed to the end of the support rod 324. A retaining plate 326 is rotatably connected inside the rotating wheel 325. A third spring 327 is fixed to one side of the retaining plate 326. The third spring 327 is in a compressed state. A driving gear 328 is rotatably connected to the surface of the rotating wheel 325. A groove 328-1 is opened in the inner wall of the driving gear 328. The retaining plate 326 is engaged in the groove 328-1. When the retaining plate 326 and the groove 328-1 form a ratchet structure, the driving gear 328 can drive the rotating wheel 325 to rotate in one direction, but cannot drive the rotating wheel 325 to rotate in the opposite direction, thereby driving the support rod 324 to rotate in one direction.

[0046] A flexible transmission rod 3212 is fixed between the support rod 324 and the rotating shaft 322. The first end of the flexible transmission rod 3212 is fixedly connected to the body of the support rod 324, and the second end of the flexible transmission rod 3212 is fixedly assembled to the shaft of the rotating shaft 322. The two are firmly connected and there is no relative circumferential slippage. When the support rod 324 rotates circumferentially under the drive of external force, the rotational torque generated by the support rod 324 is directly transmitted to the flexible transmission rod 3212. Relying on its own flexible deformation characteristics, the flexible transmission rod 3212 can adaptively compensate for the small coaxiality deviation between the support rod 324 and the rotating shaft 322 while transmitting torque, thereby synchronously transmitting the rotational torque to the rotating shaft 322, driving the rotating shaft 322 and the support rod 324 to maintain circumferential rotation in the same direction and at the same angle, realizing the linkage transmission between the two. The flexible transmission rod 3212 is made of a flexible material with torque transmission capability, and it can produce a small amount of bending deformation to ensure the stable transmission of rotational driving force.

[0047] The driving component 32 also includes a movable seat 329 that slides within the support shell 321. A fourth spring 3210 is fixed to one end of the movable seat 329. The fourth spring 3210 is in a stretched state. The other end of the fourth spring 3210 is fixed to the inner wall of the support shell 321. Limiting strips are provided on both sides of the movable seat 329. A slot corresponding to the limiting strip is opened in the support shell 321, so that the movable seat 329 can slide smoothly within the support shell 321.

[0048] A rack 3211 is fixed inside the movable seat 329. The rack 3211 meshes with the drive gear 328. When the movable seat 329 moves, the drive gear 328 can be driven to rotate through the rack 3211. Through the reciprocating movement of the movable seat 329, the drive gear 328 can be driven to rotate reciprocally.

[0049] Example 3, referring to Figures 1-12 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0050] Specifically, it also includes a support assembly 2, including a support leg 21 disposed on the surface of the orthopedic assembly 1. The support leg 21 is made of a lightweight material with rigid support and has strong support. It is preferably made of lightweight aluminum alloy. A plug 22 is fixed to one side of the support leg 21. There are three plugs 22. A fixing sleeve 23 is fixed to one side of the thigh fixing bracket 11. The number of fixing sleeves 23 corresponds to the number of plugs 22. The plugs 22 are inserted into the fixing sleeves 23. A positioning pin 24 slides inside the support leg 21. The positioning pin 24 is located on one side of the fixing sleeve 23 and limits the fixing sleeve 23 to prevent the plugs 22 from moving out of the fixing sleeve 23. A pull rod 25 is fixed to one side of the positioning pin 24. A first spring 26 is sleeved on the surface of the pull rod 25. The first spring 26 is in a compressed state. A limit groove is opened on the surface of the positioning pin 24 so that the positioning pin 24 stays in the current position and prevents it from moving out of the support leg 21.

[0051] A stabilizing seat 27 is fixed between the two supporting legs 21. The stabilizing seat 27 can improve the stability of the connection between the two supporting legs 21. A plug rod 28 is fixed to the top of the stabilizing seat 27. A socket 29 is fixed to the surface of the lower leg fixing bracket 12. The plug rod 28 is inserted into the socket 29.

[0052] When the bracket assembly 2 needs to be installed on the orthotic assembly 1, the two support legs 21 are respectively located on both sides of the thigh fixation bracket 11. At this time, the insert 22 is inserted into the fixing sleeve 23, and the positioning pin 24 is stopped on one side of the fixing sleeve 23 under the push of the first spring 26 to prevent the insert 22 from moving out of the fixing sleeve 23, so that the support leg 21 will not separate from the thigh fixation bracket 11. While inserting the insert 22 into the fixing sleeve 23, the insert rod 28 is inserted into the socket 29, so that the lower leg fixation bracket 12 is also fixed on the two support legs 21.

[0053] The bottom of the support leg 21 has a sliding rod 210, and the bottom of the two sliding rods 210 is fixed with a support foot 211. The bottom of the support foot 211 is provided with an anti-slip pad to prevent the support foot 211 from slipping on the ground. A second spring 212 is fixed inside the sliding rod 210. The second spring 212 is in a compressed state. A limit mechanism is provided on the surface of the sliding rod 210 to prevent the sliding rod 210 from sliding out of the support foot 211.

[0054] When using this device, the patient's body weight is borne by the thigh, which is supported by two supporting legs 21 and a supporting foot 211. The supporting foot 211 is placed on the ground, so that the patient's injured lower leg is not subjected to external force, ensuring the recovery effect of the lower leg. At this time, the patient's injured leg is supported, unlike traditional positioning orthotic devices, which require the patient's leg to be suspended in the air or the foot to use the ground for leverage when the patient moves, thus causing excessive burden on the leg or further damage to the lower leg.

[0055] The second spring 212 also allows the support leg 21 to be cushioned when the support foot 211 lands on the ground, so that the support leg 21 will not vibrate too much.

[0056] The support assembly 2 also includes a power component 213 disposed within the support leg 21. The power component 213 includes a reversing tube 2131 fixed within the support leg 21. A cable 2132 slides within the reversing tube 2131. The reversing tube 2131 is used to change the direction of force on the cable 2132. One end of the cable 2132 is fixed within the slide rod 210, and the other end of the cable 2132 is fixed with a slide bar 2133. The slide bar 2133 slides within the support leg 21, and the other end of the slide bar 2133 is fixed with a fifth spring 2134. The other end of the fifth spring 2134 is fixed to the inner wall of the support leg 21, and the fifth spring 2134 is in a stretched state.

[0057] When the patient walks with the support of the supporting leg 21, the supporting foot 211 is pressed against the supporting leg 21, which causes the slide bar 210 to pull the end of the cable 2132. Through the reversing tube 2131, the cable 2132 is pulled downward on the slide bar 2133, thereby stretching the fifth spring 2134.

[0058] When the patient's leg is raised, the supporting foot 211 moves away from the supporting leg 21 under the push of the second spring 212, and at the same time, the slider 2133 rises and resets under the pull of the fifth spring 2134.

[0059] The power component 213 also includes a drive housing 2135 fixed to one side of the slide bar 2133. A drive block 2136 slides inside the drive housing 2135. An unlocking rod 2137 is fixed to one side of the drive block 2136. A compression spring is sleeved on the surface of the unlocking rod 2137. A pawl 2138 is fixed to the other end of the drive block 2136. Multiple locking strips 329-1 are fixed to the surface of the moving seat 329. The pawl 2138 can be locked between the locking strips 329-1.

[0060] When the slider 2133 moves downward, it can drive the drive housing 2135 to move downward, which in turn drives the drive block 2136 to move downward. At this time, the drive block 2136 drives the moving seat 329 to move downward through the pawl 2138, which in turn drives the rack 3211 to move.

[0061] When the slider 2133 moves upward to reset, the movable seat 329 is simultaneously reset under the pull of the fourth spring 3210.

[0062] By pulling the unlocking lever 2137, the drive block 2136 can be moved away from the moving seat 329. At this time, the pawl 2138 and the locking bar 329-1 separate, so that the bracket assembly 2 can be removed from the orthopedic assembly 1.

[0063] The leg fracture positioning and orthopedic device of this invention has two usage modes: bed rest fixation and walking support. It can be flexibly switched according to the patient's rehabilitation scenario, and the bandages can be automatically loosened and relaxed alternately during walking. The specific usage process is as follows:

[0064] When the patient is bedridden, there is no need to install the bracket assembly 2. The thigh fixation bracket 11 and the lower leg fixation bracket 12 are directly attached to and wrapped around the thigh and lower leg respectively. The straps are passed through the buckle of the strap buckle 13 and the fixation hole 11-1 of the thigh fixation bracket 11 to complete the thigh fixation. The straps are passed through the strap hole 12-1 of the lower leg fixation bracket 12 to complete the lower leg fixation. The flexible padding and honeycomb holes on the inside of the brackets ensure breathability and achieve stable positioning and protection of the fracture site in bed, avoiding secondary injury to the limb.

[0065] When the patient needs to get out of bed and walk, the support assembly 2 is quickly assembled into the orthopedic assembly 1: First, the insert 22 of the support leg 21 is aligned with the fixing sleeve 23 of the thigh fixation bracket 11. The positioning pin 24 presses against the fixing sleeve 23 under the pushing force of the first spring 26, preventing the insert 22 from coming out, thus completing the fixation of the support leg 21 and the thigh fixation bracket 11. The insert rod 28 at the top of the stabilizer 27 is aligned with the socket 29 of the lower leg fixation bracket 12, thus realizing the linkage fixation of the lower leg fixation bracket 12 and the support leg 21.

[0066] The sliding rod 210 at the bottom of the supporting leg 21, the supporting foot 211, and the second spring 212 form a buffer support structure. The anti-slip pad at the bottom of the supporting foot 211 prevents slipping, and the second spring 212 can buffer the impact of landing. The patient's weight is supported by the supporting leg 21 and the supporting foot 211, and the injured lower leg is completely unaffected, avoiding secondary injury during the rehabilitation period.

[0067] When the patient walks wearing the assembled device, the straps automatically loosen and tighten alternately. The specific transmission process is as follows: the support foot 211 is pressed against the ground, pushing the slide rod 210 to slide inward into the support leg 21. The slide rod 210 pulls the cable 2132. The cable 2132 is subjected to force through the reversing tube 2131, pulling the slide bar 2133 downward. The fifth spring 2134 is stretched and stores energy. The slide bar 2133 drives the drive housing 2135, drive block 2136 and pawl 2138 to move downward synchronously.

[0068] When the support leg 21 is installed, the pawl 2138 is engaged between the retaining bars 329-1 of the movable seat 329. At this time, the pawl 2138 will push the movable seat 329 to slide downward along the support shell 321, the fourth spring 2130 is stretched, the movable seat 329 drives the rack 3211 to move downward synchronously, and the rack 3211 meshes with the drive gear 328 and drives it to rotate.

[0069] The slot 328-1 on the inner wall of the drive gear 328, together with the plate 326 and the third spring 327 in the rotating wheel 325, form a ratchet structure to achieve unidirectional drive and reverse rotation; the drive gear 328 drives the rotating wheel 325 and the support rod 324 to rotate unidirectionally.

[0070] The rotational torque of the support rod 324 is transmitted to the rotating shaft 322 via the flexible transmission rod 3212. The bevel gear 323 on the rotating shaft 322 meshes with the bevel gear 323 on the rotating rod 315, driving the rotating rod 315 to rotate synchronously.

[0071] The rotating rod 315 drives multiple worm gears 316 to rotate synchronously. The worm gears 316 mesh with the worm wheel 314 one by one, driving the worm wheel 314, the rotating disk 312 and the extrusion rod 313 to rotate synchronously. The extrusion rod 313 slides in the extrusion groove 13-1 of the strap buckle 13, pushing the strap buckle 13 to move linearly back and forth along the support base 311.

[0072] The rotating discs 312 inside the four support bases 311 are 90° apart. When they rotate synchronously, they drive the four strap buckles 13 to move back and forth in a regular manner, loosening the straps alternately. This prevents the straps from compressing the thighs for a long time, ensures blood circulation in the lower limbs, and improves wearing comfort and rehabilitation effect.

[0073] When the patient lifts their leg, the supporting foot 211 is not compressed, the second spring 212 pushes the slide bar 210 to reset, the cable 2132 loosens, the fifth spring 2134 pulls the slide bar 2133 and the drive housing 2135 to reset, the fourth spring 2130 pulls the moving seat 329 and the rack 3211 to reset, the drive gear 328 rotates in the opposite direction without driving the rotating wheel 325 to rotate, completing one adjustment cycle. During the patient's walking, the above transmission cycle continues, realizing the automatic alternating loosening and tightening of the strap.

[0074] When the patient needs to resume bed rest, pull the unlocking lever 2137 on one side of the drive block 2136 to move the drive block 2136 and pawl 2138 away from the moving seat 329. The pawl 2138 and the locking bar 329-1 are completely separated. Pull the lever 25 of the support leg 21 outward to retract the positioning pin 24, release the limitation on the fixing sleeve 23, pull the insert block 22 out of the fixing sleeve 23 and pull the insert rod 28 out of the socket 29. The entire bracket assembly 2 can then be removed, and the bed rest mode of using the orthotic component 1 alone can be restored.

[0075] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A leg fracture positioning and orthopedic device, characterized in that: include, The orthopedic component (1) includes a thigh fixation bracket (11), a lower leg fixation bracket (12) is hinged below the thigh fixation bracket (11), a strap buckle (13) is provided on one side of the thigh fixation bracket (11), a fixation hole (11-1) is provided on the thigh fixation bracket (11), and a strap hole (12-1) is provided on the lower leg fixation bracket (12). The adjustment component (3) includes an adjustment member (31) disposed on one side of the thigh fixation bracket (11). The adjustment member (31) includes a support seat (311) fixed on one side of the thigh fixation bracket (11). The strap buckle (13) slides in the support seat (311). A rotating disk (312) is rotatably connected in the support seat (311). A pressing rod (313) is fixed on one side of the rotating disk (312). A pressing groove (13-1) is opened on the surface of the strap buckle (13). A worm gear (314) is fixed on one side of the rotating disk (312) through a rotating shaft. The worm gear (314) is rotatably connected in the support seat (311). A rotating rod (315) is rotatably connected in the support seat (311). A plurality of worms (316) are fixed on the surface of the rotating rod (315).

2. The leg fracture positioning and orthopedic device as described in claim 1, characterized in that: It also includes a support assembly (2), including a support leg (21) disposed on the surface of the orthopedic assembly (1), a plug (22) fixed on one side of the support leg (21), a fixing sleeve (23) fixed on one side of the thigh fixing bracket (11), a stabilizing seat (27) fixed between the two support legs (21), a plug rod (28) fixed on the top of the stabilizing seat (27), a socket (29) fixed on the surface of the calf fixing bracket (12), a sliding rod (210) sliding on the bottom of the support leg (21), a support foot (211) fixed on the bottom of the sliding rod (210), and a second spring (212) fixed inside the sliding rod (210).

3. The leg fracture positioning and orthopedic device as described in claim 2, characterized in that: The adjustment component (3) further includes a drive component (32) disposed on the surface of the thigh fixation bracket (11). The drive component (32) includes a support shell (321) fixed to the surface of the thigh fixation bracket (11). A rotating shaft (322) is rotatably connected inside the support shell (321). A bevel gear (323) is fixed on the surface of the rotating shaft (322). A bevel gear (323) is also fixed on the surface of the rotating rod (315).

4. The leg fracture positioning and orthopedic device as described in claim 3, characterized in that: The driving component (32) further includes a support rod (324) rotatably connected to the support shell (321). A rotating wheel (325) is fixed at the end of the support rod (324). A retaining plate (326) is rotatably connected inside the rotating wheel (325). A third spring (327) is fixed on one side of the retaining plate (326). A driving gear (328) is rotatably connected to the surface of the rotating wheel (325). A groove (328-1) is opened on the inner wall of the driving gear (328). A flexible transmission rod (3212) is fixed between the support rod (324) and the rotating shaft (322).

5. The leg fracture positioning and orthopedic device as described in claim 4, characterized in that: The drive unit (32) also includes a movable seat (329) that slides inside the support shell (321). A fourth spring (3210) is fixed at one end of the movable seat (329), and the other end of the fourth spring (3210) is fixed to the inner wall of the support shell (321). A rack (3211) is fixed inside the movable seat (329).

6. The leg fracture positioning and orthopedic device as described in claim 5, characterized in that: The bracket assembly (2) further includes a power component (213) disposed in the support leg (21). The power component (213) includes a reversing tube (2131) fixed in the support leg (21). A cable (2132) slides in the reversing tube (2131). One end of the cable (2132) is fixed in the slide rod (210). The other end of the cable (2132) is fixed with a slide bar (2133). The slide bar (2133) slides in the support leg (21). The other end of the slide bar (2133) is fixed with a fifth spring (2134). The other end of the fifth spring (2134) is fixed to the inner wall of the support leg (21).

7. The leg fracture positioning and orthopedic device as described in claim 6, characterized in that: The power component (213) also includes a drive housing (2135) fixed to one side of the slide bar (2133), a drive block (2136) sliding inside the drive housing (2135), an unlocking rod (2137) fixed to one side of the drive block (2136), a pawl (2138) fixed to the other end of the drive block (2136), and a locking strip (329-1) fixed to the surface of the moving seat (329).

8. The leg fracture positioning and orthopedic device as described in claim 1, characterized in that: The thigh fixation bracket (11) and the calf fixation bracket (12) are arc-shaped brackets made of medical hard plastic that fit the human leg, and simple flexible pads are provided on the inner side of the brackets.

9. The leg fracture positioning and orthopedic device as described in claim 2, characterized in that: The support leg (21) is made of a lightweight material with rigid support.

10. The leg fracture positioning and orthopedic device as described in claim 2, characterized in that: The bottom of the support foot (211) is provided with an anti-slip pad.

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