Ankle joint fracture dorsal extension adduction position polymer splint positioning and adjusting device

Abstract

The invention discloses an ankle joint fracture dorsal extension adduction position polymer splint positioning adjusting device which comprises a bottom plate, a clamping mechanism, a placing mechanism, an adduction adjusting mechanism and a foot abutting mechanism, a transverse through opening is formed in the bottom plate, a sliding groove is formed in the bottom plate, and the transverse through opening and the sliding groove are perpendicular to each other in the direction; the clamping mechanism is arranged on the transverse through opening, the placing mechanism is fixedly arranged at one end of the sliding groove, and the inward extending adjusting mechanism is arranged on the sliding groove in a sliding mode. And the inward stretching adjusting mechanism comprises an alignment plate, a pushing and pressing assembly, a pressing plate assembly, two arc plate blocks, two pushing and pressing assemblies and an adjusting assembly, so that the fractured feet of a patient can be accurately pushed and fixed through the device, accurate regulation and control and stable maintenance of the individualized dorsal stretching adduction angle are achieved according to the differential requirements of eversion type fractures of different types, and the individualized dorsal stretching adduction angle can be accurately adjusted and controlled. The ankle point relation is effectively guaranteed to be accurately reset and continuously kept, and the problem of poor reset caused by body position deviation is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, and particularly relates to a positioning and adjusting device for a polymer splint for dorsiflexion and adduction of an ankle fracture. BACKGROUND

[0002] Ankle fracture is a common traumatic disease in clinical practice. Among them, the valgus type ankle fracture is of great concern due to its complex injury mechanism and difficulty in maintaining stability after reduction. According to the Mongolian osteology classification, the valgus type ankle fracture can be divided into three degrees: Ⅰº is manifested as a medial malleolus avulsion fracture; Ⅱº is a fracture of the medial and lateral malleolus with lateral dislocation of the talus; and Ⅲº involves the posterior margin of the tibial joint surface. Such fractures are usually caused by external force on the foot, often leading to damage to the ankle structure, displacement of the talus, and affecting the stability and weight-bearing function of the ankle joint. If the reduction is not sufficient or the fixation is not proper, complications such as re-displacement and traumatic arthritis are likely to occur, which seriously affects the functional recovery and quality of life of the patient.

[0003] In traditional Mongolian bone setting treatment, a small splint is often used for external fixation after manual reduction. However, the traditional splint is usually a split structure, and it is difficult to maintain the ankle joint in the ideal position during fixation, especially after the swelling of soft tissues subsides, it is easy to loosen, leading to an increased risk of bone fracture re-displacement. In addition, the ankle joint is irregular in shape, and the traditional splint has limited fit, and the ability to maintain the relationship of the ankle hole is insufficient, which affects the anatomical alignment and functional recovery during fracture healing.

[0004] In recent years, polymer splints have gradually been applied to the external fixation treatment of ankle fractures due to their good plasticity, integrity and stability. Clinical observations show that fixing the valgus type fracture of the ankle joint in the dorsiflexion and adduction position helps to restore and stabilize the talus in the ankle hole, restore the normal congruence of the tibiotalar joint, and reduce the tilting of the talus and the abnormal joint space, providing a good mechanical environment for fracture healing. This body position fixation not only conforms to the biomechanical characteristics of the ankle joint, but also maintains the reduction effect in early functional exercise, promoting the rehabilitation of joint function. In specific operation, the polymer splint is shaped into a U shape, wrapping around the medial side of the lower leg, medial malleolus, calcaneus, lateral malleolus, and lateral side of the lower leg, achieving fit fixation of the ankle joint through this shaping method, further ensuring the stability of the dorsiflexion and adduction position, and assisting in fracture healing and joint function recovery.

[0005] However, in the current clinical implementation of dorsiflexion and adduction fixation, it still relies on manual adjustment and experience judgment, and lacks an auxiliary device that can accurately control and maintain the body position. During the use of the splint, the dorsiflexion and adduction position of the foot may deviate, especially when facing different fracture types (such as valgus type Ⅰº, Ⅱº, and Ⅲº), the required dorsiflexion and adduction angles differ, and the existing fixation method cannot achieve individualized and adjustable body position maintenance, affecting the consistency and reliability of the treatment effect. SUMMARY

[0006] The present application aims to at least solve one of the problems in the related art to some extent.

[0007] To this end, one object of the present application is to provide an ankle fracture dorsiflexion and varus position high polymer splint positioning and adjusting device, which can accurately push and fix the fractured foot of a patient, accurately regulate and stably maintain the individualized dorsiflexion and varus angle according to the differentiated needs of different types of varus fractures, effectively ensure the accurate reduction and continuous maintenance of the ankle relationship, avoid the problem of poor reduction caused by body position deviation, improve the consistency and reliability of treatment effect, reduce the risk of long-term complications such as traumatic arthritis and joint stiffness, and help patients quickly recover the function of ankle joint.

[0008] To achieve the above object, the ankle fracture dorsiflexion and varus position high polymer splint positioning and adjusting device according to the first aspect of the present application comprises a bottom plate, a clamping mechanism, a placing mechanism, an internal extension adjusting mechanism and a foot abutting mechanism, wherein the bottom plate is provided with a transverse opening, the bottom plate is provided with a sliding groove, and the transverse opening and the sliding groove are perpendicular to each other in direction; the clamping mechanism is arranged on the transverse opening, the placing mechanism is fixedly arranged at one end of the sliding groove, and the internal extension adjusting mechanism is slidably arranged on the sliding groove; the internal extension adjusting mechanism comprises a positioning plate, a pushing assembly, a pressing plate assembly, two arc plate blocks, two pushing assemblies and an adjusting assembly, wherein the positioning plate is provided with a positioning opening, two arc plate blocks are symmetrically arranged on the positioning plate along the outer edge of the positioning plate, and the arc plate block is provided with a matching part; the top of each arc plate block is provided with a pressing plate assembly, and the adjusting assembly is arranged in the arc plate block; one end of the adjusting assembly abuts against the pressing plate assembly, and the other end of the adjusting assembly abuts against the placing mechanism; two pushing assemblies are symmetrically arranged on both sides of the positioning plate; the foot abutting mechanism is slidably arranged on the sliding groove, and the position of the foot abutting mechanism corresponds to the position of the positioning opening.

[0009] The ankle fracture dorsiflexion and varus position high polymer splint positioning and adjusting device according to the present application can accurately push and fix the fractured foot of a patient, accurately regulate and stably maintain the individualized dorsiflexion and varus angle according to the differentiated needs of different types of varus fractures, effectively ensure the accurate reduction and continuous maintenance of the ankle relationship, avoid the problem of poor reduction caused by body position deviation, improve the consistency and reliability of treatment effect, reduce the risk of long-term complications such as traumatic arthritis and joint stiffness, and help patients quickly recover the function of ankle joint.

[0010] In addition, the ankle fracture dorsiflexion and varus position high polymer splint positioning and adjusting device according to the present application can have the following additional technical features.

[0011] In one embodiment of the present application, the pushing assembly comprises an adjusting block, a positioning block, a moving rod and a mounting block, wherein the mounting block is arranged at the side of the alignment plate, the adjusting block is internally provided with a rotating motor; one end of the moving rod is connected with the driving shaft of the rotating motor, the middle part of the adjusting block penetrates through the moving rod, and the middle part of the adjusting block and the moving rod are threadedly connected; the side of the adjusting block and the side of the alignment plate are slidably connected.

[0012] In one embodiment of the present application, the adjusting assembly comprises an engaging gear, a horizontal plate, a pulling spring, an adjusting rod and a rotating shaft, wherein the horizontal plate is arranged inside the alignment plate, the horizontal plate is in the shape of "L", one end of the horizontal plate is connected with one end of the pulling spring, and the other end of the pulling spring is connected with the surface of the adjusting rod; the engaging gear is mounted inside the alignment plate; the middle part of the adjusting rod is pivotally mounted on the rotating shaft, one end of the adjusting rod is formed with a structure matched with the tooth groove of the engaging gear, and the other end of the adjusting rod is abutted with the placing mechanism.

[0013] In one embodiment of the present application, the pressing plate assembly comprises a pressing plate, a connecting rack and a pressing spring, wherein one end of the pressing spring is connected with the horizontal plate, and the other end of the pressing spring is connected with one end of the connecting rack; the pressing plate is connected with the other end of the connecting rack.

[0014] In one embodiment of the present application, the clamping mechanism comprises two supporting blocks, a driving motor, two positioning rings, a screw rod assembly and a traction belt, wherein the positioning ring is in the shape of a semicircle, and the supporting block is mounted on the convex part of the positioning ring; the two supporting blocks are slidably arranged on the screw rod assembly; one end of the traction belt is connected with the screw rod assembly, and the other end of the traction belt is connected with the placing mechanism.

[0015] In one embodiment of the present application, the screw rod assembly comprises a threaded rod, a sleeve ring, a first sleeve block, a second sleeve block and a bearing seat, wherein one end of the threaded rod is connected with the output shaft of the driving motor, the bearing seat is mounted on the inner wall of the bottom plate, and the other end of the threaded rod is connected with the bearing seat; one side of the surface of the threaded rod is provided with a first thread, the other side of the surface of the threaded rod is provided with a second thread, and the rotation directions of the first thread and the second thread are opposite; the middle part of the threaded rod is mounted with the sleeve ring; the first sleeve block is arranged on the first thread, and the second sleeve block is arranged on the second thread; the first sleeve block and the second sleeve block are respectively connected with the two supporting blocks.

[0016] In one embodiment of this application, the placement mechanism includes a placement plate, two extended wedge rods, a placement block, and a spring. The spring is disposed inside the placement plate, which is U-shaped. One end of the spring is connected to the bottom surface of the placement plate, and the other end is connected to the placement block. One end of each of the two extended wedge rods is disposed at the bottom of the placement plate, and the other end of each wedge rod passes through the arc plate and abuts against an adjusting rod inside the arc plate.

[0017] In one embodiment of this application, the foot abutment mechanism includes a wedge-shaped abutment block, a support rod, and a movable block, wherein the movable block is slidably disposed inside the groove, the support rod is mounted on the movable block, and the wedge-shaped abutment block is mounted on the support rod; the position of the wedge-shaped abutment block corresponds to the position of the alignment opening.

[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0020] Figure 1 This is a schematic diagram of the positioning and adjustment device for the polymer splint in the dorsiflexion and adduction position of the ankle fracture according to this application.

[0021] Figure 2 This is a schematic diagram of the foot contact mechanism of the polymer splint positioning and adjustment device for ankle fracture dorsiflexion and adduction in this application.

[0022] Figure 3 This is a schematic diagram of the extension adjustment mechanism of the polymer splint positioning and adjustment device for ankle fracture dorsiflexion and adduction in this application.

[0023] Figure 4 This is a schematic diagram of the matching part of the positioning and adjustment device for the dorsiflexion and adduction position of the ankle fracture polymer splint of this application.

[0024] Figure 5 This is a schematic diagram of the clamping mechanism of the polymer splint positioning and adjustment device for ankle fracture dorsiflexion and adduction in this application.

[0025] Figure 6 This is a schematic diagram of the first state of the pressure plate assembly of the polymer splint positioning and adjustment device for ankle fracture dorsiflexion and adduction in this application.

[0026] Figure 7This is a schematic diagram of the second state structure of the pressure plate assembly of the polymer splint positioning and adjustment device for ankle fracture dorsiflexion and adduction in this application.

[0027] As shown in the figure: 1. Base plate; 101. Transverse opening; 102. Slide groove; 2. Clamping mechanism; 21. Support block; 22. Drive motor; 23. Positioning ring; 24. Screw assembly; 241. First thread; 242. First socket block; 243. Threaded rod; 244. Socket ring; 245. Second thread; 246. Second socket block; 247. Bearing seat; 25. Traction belt; 3. Placement mechanism; 31. Placement plate; 32. Extension wedge rod; 33. Placement block; 34. Spring; 4. Inner extension adjustment mechanism; 41 401. Alignment plate; 42. Alignment port; 43. Pushing assembly; 44. Adjusting block; 45. Positioning block; 46. Moving rod; 47. Mounting block; 48. Pressure plate assembly; 49. Pressing plate; 400. Connecting rack; 41. Pressing spring; 42. Arc plate; 43. Matching part; 44. Adjusting assembly; 45. Meshing gear; 46. Horizontal plate; 45. Pulling spring; 45. Adjusting rod; 45. Rotating shaft; 501. Foot abutment mechanism; 51. Wedge-shaped abutment; 52. Support rod; 53. Moving block. Detailed Implementation

[0028] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0029] The positioning and adjustment device for a polymer splint in the dorsiflexion and adduction position of an ankle fracture, according to an embodiment of this application, will be described below with reference to the accompanying drawings.

[0030] The ankle fracture dorsiflexion and adduction position polymer splint positioning and adjustment device provided in this application embodiment can be applied to the external fixation treatment of patients with eversion ankle fractures in clinical orthopedics and emergency surgery. It is especially suitable for fracture reduction fixation and postoperative rehabilitation fixation that require precise maintenance of dorsiflexion and adduction position to restore ankle mortise relationship. It can be adapted to patients of different ages, body types and different degrees of eversion ankle fracture cases.

[0031] like Figures 1-7 As shown in the embodiment of this application, the polymer splint positioning and adjustment device for ankle fracture dorsiflexion and adduction may include a base plate 1, a clamping mechanism 2, a placement mechanism 3, an extension adjustment mechanism 4, and a foot abutment mechanism 5.

[0032] The base plate 1 is provided with a transverse opening 101 and a sliding groove 102. The transverse opening 101 and the sliding groove 102 are perpendicular to each other in the direction.

[0033] It should be noted that the base plate 1 described in the above embodiments can provide guidance for the sliding installation and motion adjustment of the extension adjustment mechanism 4, the clamping mechanism 2 and the foot abutment mechanism 5, ensuring the accurate movement trajectory of each component and avoiding deviation during the adjustment process.

[0034] The clamping mechanism 2 is set on the transverse opening 101, the placement mechanism 3 is fixedly set on one end of the slide groove 102, and the inner extension adjustment mechanism 4 is slidably set on the slide groove 102.

[0035] The inner extension adjustment mechanism 4 includes an alignment plate 41, a pushing assembly 42, a pressure plate assembly 43, two arc plates 44, two pushing assemblies 42, and an adjustment assembly 45.

[0036] The alignment plate 41 has an alignment opening 401, and two arc plates 44 are symmetrically arranged on the alignment plate 41 along the outer edge of the alignment plate 41. The arc plates 44 have a matching part 441.

[0037] Each arc plate 44 has a pressure plate assembly 43 mounted on its top, and an adjustment assembly 45 is disposed inside the arc plate 44. It should be noted that the pressure plate assembly 43 is used to adjust the patient's foot into an adduction position.

[0038] One end of the adjusting component 45 abuts against the pressure plate component 43, and the other end of the adjusting component 45 abuts against the placement mechanism 3.

[0039] It should be noted that the position of the pressure plate assembly 43 can be locked and positioned by the provided adjustment component 45, thereby restricting the up and down movement of the pressure plate assembly 43.

[0040] Two pushing components 42 are symmetrically arranged on both sides of the alignment plate 41.

[0041] It should be noted that the pushing component 42 provided in the above embodiment is used to press the side of the foot downwards, and can match different degrees of foot pressing according to the degree of fracture of the patient, so as to achieve different degrees of pressing for different degrees of fracture.

[0042] The foot abutment mechanism 5 is slidably mounted on the slide groove 102, and the foot abutment mechanism 5 and the alignment port 401 are positioned correspondingly. It should be noted that the alignment port 401 is positioned corresponding to the foot abutment component, and the alignment port 401 is used for the patient to place the ball of the foot.

[0043] Specifically, when external fixation treatment in dorsiflexion and adduction position is required for fracture patients, firstly, one end of a polymer splint adapted to the patient's foot and of appropriate size is placed on the placement mechanism 3, and the other end is placed on the clamping mechanism 2. The clamping mechanism 2 is controlled to move along the transverse opening 101, and the position of the clamping mechanism 2 is adjusted so that the clamping mechanism 2 corresponds to both sides of the polymer splint, and the polymer splint is initially clamped to prevent the polymer splint from shifting in subsequent operations.

[0044] Subsequently, after confirming that the polymer clamping plate is centered on the placement mechanism 3, the clamping mechanism 2 is further adjusted to apply a uniform clamping force to the polymer clamping plate, ensuring that the clamping plate is relatively fixed to the placement mechanism 3, providing a stable foundation for subsequent foot adjustment and fixation. During this process, the locking state of the adjusting component 45 is released, thereby allowing the pressure plate component 43 to move up and down inside the arc plate 44.

[0045] Push the extension adjustment mechanism 4 to slide along the slide groove 102 towards the placement mechanism 3, adjust the distance between the extension adjustment mechanism 4 and the placement mechanism 3, so that the alignment port 401 of the alignment plate 41 on the extension adjustment mechanism 4 matches the position of the polymer splint on the placement mechanism 3, and ensure the subsequent placement of the patient's foot.

[0046] Guide the patient to place their injured foot on the arc plate 44 of the extension adjustment mechanism 4, aligning the patient's ankle joint with the alignment opening 401 of the alignment plate 41 to ensure accurate foot placement. Then, push the foot abutment mechanism 5 to slide along the groove 102, adjusting its position so that it is firmly abutted against the patient's foot plate 1. This achieves dorsiflexion adjustment of the patient's foot, providing stable support and preventing forward / backward displacement during angle adjustment.

[0047] By adjusting the pushing component 42 of the extension adjustment mechanism 4, a uniform pushing force is applied to one side of the patient's foot. Simultaneously, the foot abutment mechanism 5 provides support, slowly adjusting the angle of the patient's foot so that the ankle joint gradually reaches the preset dorsiflexion-adduction position. The adjustment process must be performed slowly, with close observation of the patient's response to avoid exacerbating pain or causing secondary injury due to excessive speed or force.

[0048] Simultaneously check the contact status of the foot-supporting mechanism 5 to ensure it remains tightly fitted to the patient's foot plate 1 without any loosening. Finally, confirm that the polymer splint is tightly fitted to the patient's ankle joint and that all components are in a stable and fixed state, completing the entire positioning and adjustment operation. Finally, attach the polymer splint to the patient's lower leg and ankle, and wrap a bandage around the patient's foot.

[0049] It should be noted that if the patient experiences local pressure discomfort or angle deviation, the position of the inward extension adjustment mechanism 4 or the foot abutment mechanism 5 can be finely adjusted to optimize the fixation state and ensure the patient's comfort and fixation effect during rehabilitation.

[0050] In one embodiment of this application, such as Figure 3 As shown, the pushing assembly 42 includes an adjusting block 421, a positioning block 422, a moving rod 423, and a mounting block 424.

[0051] The mounting block 424 is located on the side of the alignment plate 41, and the adjusting block 421 is equipped with a rotating motor. The drive shaft of the rotating motor is connected to one end of the moving rod 423. The middle part of the adjusting block 421 passes through the moving rod 423, and the middle part of the adjusting block 421 and the moving rod 423 are threadedly connected. The side of the adjusting block 421 is slidably connected to the side of the alignment plate 41.

[0052] Specifically, when it is necessary to adduct the patient's foot, the corresponding pushing component 42 is selected according to the direction of the fractured foot (e.g., left foot, right foot). The drive motor rotates, which moves the moving rod 423, thereby moving the adjusting block 421 on its surface, which in turn causes the positioning block 422 to move downward to adduct the patient's foot.

[0053] For example, when a patient suffers an eversion type ankle fracture in their left foot, the push-press component 42 on the side corresponding to the fractured foot is selected to adjust the patient's foot into an adduction position.

[0054] It should be noted that the positioning block 422 in the above embodiment is not in contact with the surface of the alignment plate 41; there is a certain gap between them. This has the advantage of preventing the positioning block 422 from interfering with the foot contact mechanism 5 when the patient is first placed in a dorsiflexion position. Furthermore, since the patient is first placed in a dorsiflexion position, the patient's foot plate 1 is not tightly against the surface of the alignment plate 41, making it easier for the positioning block 422 to contact the side of the patient's foot.

[0055] In one embodiment of this application, such as Figure 6 and Figure 7 As shown, the adjustment assembly 45 includes a meshing gear 451, a cross plate 452, a pull spring 453, an adjustment rod 454, and a rotating shaft 455.

[0056] The horizontal plate 452 is disposed inside the alignment plate 41. The horizontal plate 452 is L-shaped, with one end connected to one end of the pull spring 453, and the other end of the pull spring 453 connected to the surface of the adjusting rod 454. The meshing gear 451 is installed inside the alignment plate 41, and the middle part of the adjusting rod 454 is pivotally mounted on the rotating shaft 455. It should be noted that the pull spring 453 provided in the above embodiment can pull one end of the adjusting rod 454, causing the middle part of the adjusting rod 454 to pivot around the rotating shaft 455.

[0057] As one possibility, an angle encoder can be installed on the meshing gear 451. The angle encoder reads the rotation angle of the meshing gear 451 to obtain the angle of the patient's foot entering the adduction position, thereby adaptively adjusting the pressure of the adjusting block 421.

[0058] One end of the adjusting rod 454 is formed with a tooth groove that engages with the meshing gear 451, and the other end of the adjusting rod 454 abuts against the placement mechanism 3.

[0059] It should be noted that the adjusting rod 454 described in the above embodiment can press the tooth groove of the meshing gear 451, thereby preventing the rotation of the meshing gear 451 and locking the meshing gear 451.

[0060] Specifically, when the clamping assembly clamps the patient's foot, it causes the traction strap 25 to retract. During this retraction, the placement plate 31 is pulled downwards. As the placement plate 31 moves downwards, it presses down on one end of the adjusting rod 454, causing the adjusting rod 454 to pivot around the rotation axis 455. This causes the other end of the adjusting rod 454 to rotate away from the tooth groove of the meshing gear 451. At this point, the adjusting mechanism... Figure 6 The first state transforms into Figure 7 The second state allows the meshing gear 451 to rotate.

[0061] In one embodiment of this application, such as Figure 6 As shown, the pressure plate assembly 43 includes a pressure plate 431, a connecting rack 432, and a pressure spring 433.

[0062] One end of the compression spring 433 is connected to the horizontal plate 452, the other end of the compression spring 433 is connected to one end of the connecting rack 432, and the compression plate 431 is connected to the other end of the connecting rack 432.

[0063] It should be noted that the connecting rack 432 described in the above embodiment can mesh with the meshing gear 451, thereby enabling the rack to move up and down inside the arc plate 44.

[0064] In one embodiment of this application, such as Figure 2 As shown, the clamping mechanism 2 includes two support blocks 21, a drive motor 22, two positioning rings 23, a screw assembly 24, and a traction belt 25.

[0065] The positioning ring 23 is semi-circular, and the support block 21 is installed on the protrusion of the positioning ring 23. It should be noted that the positioning ring 23 is designed to fit against the patient's lower leg, and the support block 21 can move the positioning ring 23 closer together or further apart.

[0066] Two support blocks 21 are slidably mounted on the screw assembly 24;

[0067] One end of the traction belt 25 is connected to the screw assembly 24, and the other end of the traction belt 25 is connected to the placement mechanism 3.

[0068] It should be noted that the traction belt 25 described in the above embodiment is elastic, and the traction belt 25 can pull the placement mechanism 3, thereby enabling the placement mechanism 3 to cooperate with the inner extension adjustment mechanism 4.

[0069] In one embodiment of this application, such as Figure 5 As shown, the screw assembly 24 includes a threaded rod 243, a sleeve ring 244, a first sleeve block 242, a second sleeve block 246, and a bearing housing 247.

[0070] One end of the threaded rod 243 is connected to the output shaft of the drive motor 22, the bearing seat 247 is installed on the inner wall of the base plate 1, and the other end of the threaded rod 243 is connected to the bearing seat 247. A first thread 241 is provided on one side of the surface of the threaded rod 243, and a second thread 245 is provided on the other side of the surface of the threaded rod 243. The first thread 241 and the second thread 245 have opposite directions of rotation.

[0071] It is understandable that when the drive motor 22 rotates, the drive motor 22 can drive the threaded rod 243 to rotate.

[0072] A collar 244 is installed in the middle of the threaded rod 243;

[0073] A first socket block 242 is provided on the first thread 241, and a second socket block 246 is provided on the second thread 245;

[0074] The first socket block 242 and the second socket block 246 are respectively connected to the two support blocks 21.

[0075] Specifically, when the drive motor 22 rotates, it drives the threaded rod 243 to rotate. Since the first thread 241 and the second thread 245 have opposite directions of rotation, when the threaded rod 243 rotates, it can respectively drive the first sleeve block 242 sleeved on the first thread 241 and the second sleeve block 246 sleeved on the second thread 245 to move closer or further apart. When the first sleeve block 242 and the second sleeve block 246 move closer or further apart, they can drive the two positioning rings 23 to move closer or further apart, thereby enabling the splint located inside the support block 21 to fit against the patient's lower leg.

[0076] On the other hand, when the drive motor 22 rotates, the drive motor 22 can drive the threaded rod 243 to rotate, which in turn drives the sleeve ring 244 in the middle of the threaded rod 243 to rotate. Since the surface of the threaded rod 243 corresponding to the sleeve ring 244 has no threads, the traction belt 25 can be wound on the sleeve ring 244 when the threaded rod 243 rotates.

[0077] In one embodiment of this application, such as Figure 6 As shown, the placement mechanism 3 includes a placement plate 31, two extended wedge rods 32, a placement block 33, and a spring 34.

[0078] The spring 34 is installed inside the placement plate 31, which is U-shaped. One end of the spring 34 is connected to the bottom surface of the placement plate 31, and the other end of the spring 34 is connected to the placement block 33.

[0079] It is understood that the spring 34 described in the above embodiments can abut against the placement plate 31, thereby lifting the placement plate 31.

[0080] One end of each of the two extended wedge rods 32 is located at the bottom of the placement plate 31, and the other end of the extended wedge rods 32 passes through the arc plate 44 and abuts against the adjusting rod 454 inside the arc plate 44.

[0081] It should be noted that the extended wedge rod 32 in the above embodiment can press the adjusting rod 454, such as... Figure 7 As shown, this causes the adjusting rod 454 to rotate.

[0082] In one embodiment of this application, such as Figure 1 and Figure 2 As shown, the foot abutment mechanism 5 includes a wedge-shaped abutment block 51, a support rod 52, and a moving block 53.

[0083] The movable block 53 is slidably disposed inside the slide groove 102, the support rod 52 is mounted on the movable block 53, and the wedge-shaped abutment 51 is mounted on the support rod 52.

[0084] The position of the wedge-shaped abutment 51 corresponds to the position of the alignment port 401.

[0085] It should be noted that the movable block 53 is an electric slider that can slide inside the slide groove 102, thereby driving the support rod 52 and the wedge-shaped block 51 to move relative to each other, so that the wedge-shaped block 51 can adjust the degree of dorsiflexion of the patient's foot.

[0086] In summary, the ankle fracture dorsiflexion-adduction polymer splint positioning and adjustment device of this application can precisely push and fix the fractured foot of the patient through the device. For the differentiated needs of different types of eversion fractures, it can achieve precise control and stable maintenance of individualized dorsiflexion-adduction angles, effectively ensure accurate reduction and continuous maintenance of the ankle mortise relationship, avoid poor reduction problems caused by body position deviation, improve the consistency and reliability of treatment effects, reduce the risk of long-term complications such as traumatic arthritis and joint stiffness, and help patients quickly recover ankle joint function.

[0087] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0088] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0089] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A positioning and adjusting device for a polymer splint for ankle fracture in dorsiflexion-inversion position, characterized in that, Including the bottom plate (1), the clamping mechanism (2), the placing mechanism (3), the inner stretch adjusting mechanism (4) and the foot abutting mechanism (5), wherein, The bottom plate (1) is provided with a transverse opening (101), and the bottom plate (1) is provided with a chute (102), and the transverse opening (101) and the chute (102) are perpendicular to each other in direction; The clamping mechanism (2) is arranged on the transverse opening (101), the placing mechanism (3) is fixedly arranged on one end of the chute (102), and the inner stretch adjusting mechanism (4) is slidably arranged on the chute (102); The inner stretch adjusting mechanism (4) includes a positioning plate (41), a push assembly (42), a pressing plate assembly (43), two arc plate blocks (44), two push assemblies (42) and an adjusting assembly (45), wherein, The positioning plate (41) is provided with a positioning opening (401), and two arc plate blocks (44) are symmetrically arranged on the outer edge of the positioning plate (41), and the arc plate block (44) is provided with a matching part (441); The top of each arc plate block (44) is provided with a pressing plate assembly (43), and the adjusting assembly (45) is arranged in the arc plate block (44); One end of the adjusting assembly (45) abuts against the pressing plate assembly (43), and the other end of the adjusting assembly (45) abuts against the placing mechanism (3); Two push assemblies (42) are symmetrically arranged on both sides of the positioning plate (41); The foot abutting mechanism (5) is slidably arranged on the chute (102), and the foot abutting mechanism (5) corresponds to the position of the positioning opening (401).

2. The ankle fracture dorsiflexion-inversion position polymer splint positioning adjusting device according to claim 1, characterized in that, The push assembly (42) includes an adjusting block (421), a positioning block (422), a moving rod (423) and a mounting block (424), wherein, The mounting block (424) is arranged on the side of the positioning plate (41), and the adjusting block (421) is internally provided with a rotating motor; One end of the moving rod (423) connected with the driving shaft of the rotating motor penetrates the middle part of the adjusting block (421), and the middle part of the adjusting block (421) is threadedly connected with the moving rod (423); The side of the adjusting block (421) is slidably connected with the side of the positioning plate (41).

3. The ankle fracture dorsiflexion-inversion position polymer splint positioning adjustment device according to claim 1, characterized in that, The adjusting assembly (45) includes an engagement gear (451), a cross plate (452), a pulling spring (453), an adjusting rod (454) and a rotating shaft (455), wherein, The cross plate (452) is arranged in the positioning plate (41), the cross plate (452) is "L" type, one end of the cross plate (452) is connected with one end of the pulling spring (453), and the other end of the pulling spring (453) is connected with the surface of the adjusting rod (454); The engagement gear (451) is mounted in the positioning plate (41). The middle part of the adjusting rod (454) is pivotally mounted on the rotating shaft (455), one end of the adjusting rod (454) is formed with a structure matched with the tooth groove of the engaging gear (451), and the other end of the adjusting rod (454) abuts against the placing mechanism (3).

4. The ankle fracture dorsiflexion-inversion position polymer splint positioning adjustment device according to claim 3, characterized in that, The pressing plate assembly (43) comprises a pressing plate (431), a connecting rack (432) and a pressing spring (433), wherein, One end of the pressing spring (433) is connected with the cross plate (452), and the other end of the pressing spring (433) is connected with one end of the connecting rack (432); The pressing plate (431) is connected with the other end of the connecting rack (432).

5. The ankle fracture dorsiflexion-inversion position polymer splint positioning adjustment device according to claim 3, characterized in that, The clamping mechanism (2) comprises two supporting blocks (21), a driving motor (22), two positioning rings (23), a screw rod assembly (24) and a traction belt (25), wherein, The positioning ring (23) is a semicircular arc, and the supporting block (21) is mounted on the convex part of the positioning ring (23); The two supporting blocks (21) are slidably arranged on the screw rod assembly (24); One end of the traction belt (25) is connected with the screw rod assembly (24), and the other end of the traction belt (25) is connected with the placing mechanism (3).

6. The ankle fracture dorsiflexion-inversion position polymer splint positioning adjustment device according to claim 5, characterized in that, The screw rod assembly (24) comprises a threaded rod (243), a sleeve ring (244), a first sleeve block (242), a second sleeve block (246) and a bearing seat (247), wherein, One end of the threaded rod (243) is connected with the output shaft of the driving motor (22), the bearing seat (247) is mounted on the inner wall of the bottom plate (1), and the other end of the threaded rod (243) is connected with the bearing seat (247); A first thread (241) is arranged on one side of the surface of the threaded rod (243), and a second thread (245) is arranged on the other side of the surface of the threaded rod (243), and the rotation directions of the first thread (241) and the second thread (245) are opposite; The sleeve ring (244) is mounted on the middle part of the threaded rod (243); The first sleeve block (242) is arranged on the first thread (241), and the second sleeve block (246) is arranged on the second thread (245); The first sleeve block (242) and the second sleeve block (246) are respectively connected with the two supporting blocks (21).

7. The ankle fracture dorsiflexion-inversion position polymer splint positioning adjustment device according to claim 1, wherein, The placing mechanism (3) comprises a placing plate (31), two extension wedge-shaped rods (32), a placing block (33) and a bouncing spring (34), wherein, The bouncing spring (34) is arranged in the inside of the placing plate (31), the placing plate (31) is in the shape of "N", one end of the bouncing spring (34) is connected with the bottom surface of the placing plate (31), and the other end of the bouncing spring (34) is connected with the placing block (33); Two ends of the extension wedge-shaped rods (32) are respectively arranged at the bottom of the placing plate (31), the other ends of the extension wedge-shaped rods (32) penetrate through the arc plate block (44) and abut against the adjusting rod (454) in the inside of the arc plate block (44).

8. The ankle fracture dorsiflexion-inversion position polymer splint positioning adjustment device according to claim 1, wherein, The foot abutting mechanism (5) comprises a wedge-shaped abutting block (51), a supporting rod (52) and a moving block (53), wherein, The moving block (53) is slidably arranged inside the sliding groove (102), the supporting rod (52) is installed on the moving block (53), and the wedge-shaped abutting block (51) is installed on the supporting rod (52); The position of the wedge-shaped abutting block (51) corresponds to the position of the alignment opening (401).

Images