Limb orthopedic outer frame

Abstract

The utility model relates to the technical field of limb orthopedics, in particular to a limb orthopedics outer frame which comprises mounting rings which are symmetrically arranged at intervals, avoiding holes which can penetrate through limbs of a patient are formed in the mounting rings, a plurality of mounting holes used for fixing bone nails are formed in the mounting rings, and a plurality of connecting parts are arranged on the mounting rings in the circumferential direction. A plurality of connecting grooves are formed in the connecting parts, a plurality of telescopic bone extension assemblies connected to the connecting grooves are rotationally connected between the two mounting rings, a protrusion is arranged between every two adjacent connecting grooves in each connecting part, a limiting rod used for limiting the fixing position of the connecting piece is arranged in each connecting groove, and the limiting rods are elastically connected to the protrusions. Therefore, the bone lengthening component can be quickly adjusted, the adjusting efficiency is improved, the bone lengthening component is convenient to install, and the installation time is saved.

Description

Technical Field

[0001] This utility model relates to the field of limb orthotics technology, and in particular to a limb orthotics frame. Background Technology

[0002] Fixation devices are essential in orthopedic surgery. The most commonly used external fixation devices are external fixation frames. In the field of skeletal orthopedic rehabilitation, a series of fixation rings of different models and sizes are used. In actual application, doctors select the specific model of fixation ring for the patient based on the patient's basic condition.

[0003] Currently, existing limb orthotic frames, such as Chinese Patent Publication No. CN2408833Y, disclose a combined internal and external limb synchronous lengthening device, which consists of a synchronous lengthening device and a three-dimensional positioning device for the distal end of an intramedullary nail with locking mechanism. The synchronous lengthening device includes a bone lengthening device and a dynamic cross-joint device. The bone lengthening device comprises a perforated steel pin ring, a lengthening adjuster, a stabilizing ring, an orthotic ring, steel pins, and locking pin devices. The perforated steel pin ring, stabilizing ring, and orthotic ring are respectively fixed to both ends of the lengthening adjuster. Holes are evenly distributed on the surface of the perforated steel pin ring, stabilizing ring, and orthotic ring. Locking pin devices are installed in pairs on the perforated steel pin ring, and each steel pin is fixed by two locking pin devices. The dynamic cross-joint device consists of a dynamic connector. The device consists of a dynamic elastic device, a perforated semi-ring, and a drive linkage. The dynamic cross-joint device and the orthotic ring in the bone lengthening device are connected and fixed by screws. The perforated semi-ring is equipped with a dynamic connector and a dynamic elastic device, and a locking needle and a steel needle are also fixed on the perforated semi-ring. A steel needle ring is installed on the dynamic connector, and a drive linkage, a locking needle and a steel needle are installed on the steel needle ring. The dynamic cross-joint device can lengthen the soft tissue and bone of the limb synchronously, and also allows the joint to have a certain range of motion. It has a short treatment cycle, high accuracy and success rate of limb lengthening, and allows the bone and soft tissue to lengthen synchronously. However, the bone lengthening structure of the above device is not easy to adjust, and adjustment usually requires separate control. Moreover, the bone lengthening structure is inconvenient to install and use.

[0004] How to quickly adjust the bone extension component, improve adjustment efficiency, facilitate installation, and save installation time has become a technical problem that needs to be solved.

[0005] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0006] In view of the above-mentioned defects, the purpose of this utility model is to provide a limb orthotic external frame that can quickly adjust the bone lengthening component, improve adjustment efficiency, and is easy to install, saving installation time.

[0007] To achieve the above objectives, this utility model provides a limb orthotic frame, including symmetrically spaced mounting rings. Each mounting ring has a clearance hole that allows the patient's limb to pass through. Each mounting ring also has several mounting holes for fixing bone screws. Each mounting ring has several connecting portions along its circumference, and each connecting portion has several connecting grooves. Several retractable bone lengthening components connected to the connecting grooves are rotatably connected between two mounting rings.

[0008] Each connecting part has a protrusion between two adjacent connecting slots, and each connecting slot has a limiting rod for restricting the fixed position of the connecting part. The limiting rod is elastically connected to the protrusion.

[0009] According to the limb orthotic frame of this utility model, the bone lengthening components all include telescopic components, and each telescopic component is provided with a connector at one end near the mounting ring. Each connector is connected in a connecting groove, and a universal joint is provided between the connecting block and the telescopic component.

[0010] According to the limb orthotic frame of this utility model, each of the connecting members includes a connecting block. The end of each connecting block near the mounting ring abuts against the mounting ring, and the end of each connecting block away from the mounting ring is threaded with a locking member. Each locking member passes through a connecting groove, and the end of each locking member away from the connecting block is provided with a locking head. The end of each locking head near the mounting ring abuts against the mounting ring.

[0011] According to the limb orthotic frame of this utility model, an adjusting block is provided between one end of the telescopic member and the connecting member, one end of the adjusting block is connected to the connecting member, and a universal joint is provided between the adjusting block and the connecting member, and the end of the adjusting block near the telescopic member is threadedly connected to the telescopic member.

[0012] According to the limb orthotic frame of this utility model, when two limiting rods are provided on a protrusion, one limiting rod is elastically connected to the protrusion, the other limiting rod is elastically connected to the limiting rod, and the ends of the two limiting rods that are far apart from each other are respectively inserted into a connecting groove.

[0013] According to the limb orthotic frame of this utility model, the end of the limiting rod near the protrusion is inserted into the protrusion, and the limiting rod inside the protrusion is symmetrically provided with inserts. The protrusion is provided with slots that cooperate with the inserts. The inserts are slidably disposed in the slots, and elastic elements are provided between the inserts and the slots.

[0014] The purpose of this invention is to provide a limb orthotic external frame, including a mounting ring and bone lengthening components. By adjusting the telescopic distance of several bone lengthening components, it assists in the growth of the patient's limb. The electrically controlled telescopic components allow for rapid adjustment of the bone lengthening components, improving adjustment efficiency. A limiting rod restricts the position of the connecting components after they are fixed, further preventing displacement. The telescopic limiting rod allows the connecting components to be inserted into the connecting slot without disassembling the connecting blocks and locking components, facilitating connection and saving installation time. In summary, the beneficial effects of this invention are: rapid adjustment of the bone lengthening components, improved adjustment efficiency, ease of installation, and time-saving installation. Attached Figure Description

[0015] Figure 1 This is a structural diagram of the present invention;

[0016] Figure 2 This is a structural diagram of the connecting part;

[0017] Figure 3 This is a cross-sectional view of the limit rod.

[0018] In the figure: 1-mounting ring, 11-mounting hole, 12-connecting part, 121-connecting groove, 122-protrusion, 2-bone extension assembly, 21-connecting block, 211-locking element, 212-locking head, 22-universal joint, 23-telescopic element, 24-adjusting block, 3-limiting rod, 4-elastic element. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0020] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0022] See Figures 1-3 This utility model provides a limb orthotic external frame, including symmetrically arranged mounting rings 1, with a gap between the two mounting rings 1. Each mounting ring 1 has a clearance hole that allows the patient's limb to pass through. Each mounting ring 1 has several mounting holes 11 for fixing bone screws (the fixing of bone screws and the connection between bone screws and external fixation brackets are mature existing technologies and are conventional techniques for those skilled in the art; the specific connection methods and working principles will not be described in detail here). Each mounting ring 1 has several evenly distributed connecting parts 12 along the circumference, and each connecting part 12 is a protruding plate. The structure has several connecting grooves 121 on each connecting part 12. Each connecting groove 121 has an opening at one end away from the axis of the mounting ring 1. Several bone extension components 2 are provided between the two mounting rings 1. Each bone extension component 2 includes a telescopic member 23 (one end of the telescopic member 23 can move away from or closer to the other end). Each telescopic member 23 has a connector at the end near the mounting ring 1. The connector is connected to the connecting groove 121. A universal joint 22 is provided between the connecting block 21 and the telescopic member 23. In this way, the telescopic member 23 can be connected between the two mounting rings 1 at multiple angles.

[0023] See Figures 1-3 Preferably, the telescopic component 23 is an electric cylinder. A controller can be set on the mounting ring 1, and all the telescopic components 23 are electrically connected to the controller. The controller is used to uniformly adjust the telescopic components 23 (setting a controller among multiple electrical devices to achieve unified intelligent control is a mature existing technology in this field. Its specific connection method and working principle will not be described here) to provide power to the device.

[0024] See Figures 1-3 Specifically, each connector includes a connecting block 21. The end of the connecting block 21 closest to the mounting ring 1 abuts against the mounting ring 1, and the end of the connecting block 21 furthest from the mounting ring 1 is threaded with a locking member 211. The locking member 211 passes through the connecting groove 121. The end of the locking member 211 furthest from the connecting block 21 is provided with a locking head 212. The end of the locking head 212 closest to the mounting ring 1 abuts against the mounting ring 1. By rotating the locking head 212, the connecting block 21 can be fixed on the mounting ring 1, which facilitates the connection of the bone extension component 2.

[0025] See Figures 1-3 Preferably, an adjusting block 24 is provided between one end of the telescopic member 23 and the connecting member. One end of the adjusting block 24 is connected to the connecting member, and a universal joint 22 is provided between the adjusting block 24 and the connecting member. The end of the adjusting block 24 near the telescopic member 23 is threaded to the telescopic member 23. After adjustment using the telescopic member 23, the adjusting block 24 can still be rotated to further adjust the extension of the bone lengthening component 2 and increase the adjustment range. The adjusting block 24 can also be slightly rotated to make trial slight adjustments, thereby improving the flexibility of the bone lengthening component 2 adjustment.

[0026] See Figures 1-3 Preferably, when connecting the bone extension component 2, one of the connectors of the bone extension component 2 is fixed to the connecting part 12 of a mounting ring 1, and the other connector of the bone extension component 2 is connected to the connecting part 12 of another mounting ring 1, with the two connecting parts 12 being staggered from each other, so that the bone extension component 2 is inclinedly set between the two mounting rings 1 (the bone extension component 2 can have multiple connection methods, which can be selected according to the actual situation), which facilitates slight adjustment of the bone extension component 2.

[0027] See Figures 1-3 Each connecting part 12 has a protrusion 122 between two adjacent connecting slots 121. Each connecting slot 121 has a limiting rod 3 for limiting the fixed position of the connector. The limiting rod 3 is elastically connected to the protrusion 122 (the end of the limiting rod 3 near the protrusion 122 is inserted into the protrusion 122, and the limiting rod 3 in the protrusion 122 is symmetrically provided with a plug. The protrusion 122 has a slot that cooperates with the plug. The plug is slidably set in the slot, and there is an elastic element 4 between the plug and the slot). The limiting rod 3 can limit the position of the connector after the connector is fixed, further preventing the connector from shifting. The telescopic limiting rod 3 allows the connector to be inserted into the connecting slot 121 without disassembling the connecting block 21 and the locking element 211, which facilitates the connection of the connector.

[0028] See Figures 1-3 Preferably, when two limiting rods 3 need to be provided on a protrusion 122 (one end of each limiting rod 3 is inserted into a connecting groove 121), one limiting rod 3 is elastically connected to the protrusion 122, and the other limiting rod 3 is elastically connected to the limiting rod 3 (the connection method between the two limiting rods 3 is the same as the connection method between the limiting rod 3 and the protrusion 122; its specific connection structure and working principle will not be described in detail here), and the ends of the two limiting rods 3 that are far apart from each other are inserted into a connecting groove 121 (see...). Figure 3 This design allows each connecting slot 121 to have a limiting rod 3, while also ensuring that each limiting rod 3 has sufficient retractable distance, thus saving installation space.

[0029] See Figures 1-3 Preferably, the elastic element 4 is a spring, which provides the return force.

[0030] See Figures 1-3 When in use, after connecting the two mounting rings 1 to the fixation on the patient's limb, the patient's limb can be assisted to grow by adjusting the extension distance of several bone extension components 2.

[0031] This utility model provides a limb orthotic external frame, including a mounting ring and bone lengthening components. By adjusting the telescopic distance of several bone lengthening components, it assists in the growth of the patient's limb. The electrically controlled telescopic components allow for rapid adjustment of the bone lengthening components, improving adjustment efficiency. A limiting rod restricts the position of the connecting components after they are fixed, further preventing displacement. The telescopic limiting rod allows the connecting components to be inserted into the connecting slot without disassembling the connecting blocks and locking components, facilitating connection and saving installation time. In summary, the beneficial effects of this utility model are: rapid adjustment of the bone lengthening components, improved adjustment efficiency, ease of installation, and time-saving installation.

[0032] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A limb orthotic external frame, characterized in that, The device includes symmetrically spaced mounting rings, each mounting ring having a clearance hole that allows the patient's limb to pass through, each mounting ring having several mounting holes for fixing bone screws, each mounting ring having several connecting parts along the circumference, each connecting part having several connecting grooves, and several retractable bone lengthening components connected to the connecting grooves being rotatably connected between two mounting rings. Each connecting part has a protrusion between two adjacent connecting slots, and each connecting slot has a limiting rod for restricting the fixed position of the connecting part. The limiting rod is elastically connected to the protrusion.

2. The limb orthotic external frame according to claim 1, characterized in that, Each bone extension component includes a telescopic member, and each telescopic member has a connector at one end near the mounting ring. Each connector is connected to a connecting groove, and each connector includes a connecting block. A universal joint is provided between the connecting block and the telescopic member.

3. The limb orthotic external frame according to claim 2, characterized in that, Each connector includes a connecting block, with the end of the connecting block near the mounting ring abutting against the mounting ring, and the end of the connecting block away from the mounting ring threaded with a locking element. The locking element passes through the connecting groove, and the end of the locking element away from the connecting block is provided with a locking head, with the end of the locking head near the mounting ring abutting against the mounting ring.

4. The limb orthotic external frame according to claim 2, characterized in that, An adjusting block is provided between one end of the telescopic component and the connecting component. One end of the adjusting block is connected to the connecting component, and a universal joint is provided between the adjusting block and the connecting component. The end of the adjusting block near the telescopic component is threadedly connected to the telescopic component.

5. The limb orthotic external frame according to claim 1, characterized in that, When two limiting rods are provided on a protrusion, one limiting rod is elastically connected to the protrusion, and the other limiting rod is elastically connected to the protrusion. The ends of the two limiting rods that are far apart from each other are respectively inserted into a connecting groove.

6. The limb orthotic external frame according to claim 1, characterized in that, The end of each limiting rod near the protrusion is inserted into the protrusion. Each limiting rod inside the protrusion is symmetrically provided with a plug. Each protrusion is provided with a slot that mates with the plug. Each plug is slidably disposed in the slot, and an elastic element is provided between the plug and the slot.

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