An external fixation mechanism for trauma orthopedics

Abstract

The present invention provides an external fixation mechanism for trauma orthopedics, belonging to the technical field of orthopedic external fixation. It includes a foot structure that is sleeved on the patient's foot and a knee structure that is sleeved on the patient's knee; the knee structure includes a knee pad that is adapted to the patient's knee pit, a first knee sleeve that is adapted to the connection between the patient's knee and tibia, and a second knee sleeve that is adapted to the connection between the patient's knee and femur, the first knee sleeve and the second knee sleeve being fixedly connected to the two ends of the knee pad respectively; the foot structure includes a heel section that is adapted to the patient's heel and an ankle section that is adapted to the patient's ankle. The present invention installs a support structure by providing a foot structure and a knee structure, so that the weight of the support structure itself is borne by the patient's foot and knee, reducing the pressure on the patient's tibia and making the entire support structure more stable.

Description

Technical Field

[0001] The present invention relates to the technical field of orthopedic external fixation, in particular to an external fixation mechanism used in trauma orthopedics. Background Art

[0002] Orthopedic external fixators are surgical devices commonly used to treat fractures, bone defects, or osteoarthritis. They are particularly effective in treating complex fractures or severe trauma, helping to stabilize the fracture site and aid bone healing. Typically consisting of metal rods, screws, and connectors, they are externally fixed to the bone, maintaining the stability of the fracture ends and preventing displacement until the bone heals.

[0003] When existing orthopedic external fixators are used to fix a patient's fracture site, the weight of the external bracket and metal rod is borne by the bones around the patient's fracture site. If the patient does not operate it properly, the fracture injury may be aggravated. At the same time, the annular metal bracket makes it inconvenient for the patient to place his legs, and a special support pad or pillow is needed to help stabilize the legs. Therefore, the present application provides an external fixation mechanism for trauma orthopedics to meet the needs. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an external fixation mechanism for trauma orthopedics to solve the problem that when the existing orthopedic external fixator is used to fix the patient's fracture site, the weight of its external bracket and metal rod is borne by the bones around the patient's fracture site. If the patient operates improperly, the fracture injury is likely to be aggravated. At the same time, its annular metal bracket makes it inconvenient to place the patient's legs, and a special support pad or pillow is needed to help stabilize the legs.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] An external fixation mechanism for trauma orthopedics comprises a foot structure sleeved on a patient's foot and a knee structure sleeved on a patient's knee; the knee structure comprises a knee pad adapted to the patient's knee fossa, a first knee sleeve adapted to the connection between the patient's knee and tibia, and a second knee sleeve adapted to the connection between the patient's knee and femur, the first knee sleeve and the second knee sleeve being fixedly connected to two ends of the knee pad respectively; the foot structure comprises a heel section adapted to the patient's heel and an ankle section adapted to the patient's ankle; a bracket structure is connected between the ankle section and the first knee sleeve, and a calf pad is connected between the ankle section and the knee pad, the shape of the calf pad being adapted to the shape of the patient's calf; and a limit adjustment structure for limiting the knee pad.

[0007] Optionally, a weakened groove is provided at the middle position of the outer side of the knee pad, and the weakened groove separates the knee pad into a first pad and a second pad; the first knee sleeve consists of a first sleeve section and a second sleeve section, and the first sleeve section and the second sleeve section are respectively fixedly connected to the two sides of the first pad; the second knee sleeve consists of a third sleeve section and a fourth sleeve section, and the third sleeve section and the fourth sleeve section are respectively fixedly connected to the two sides of the second pad; the first knee sleeve and the second knee sleeve are connected to a protective cover plate, and the inner side of the protective cover plate is adapted to fit the inner wall of the first knee sleeve and the second knee sleeve; it also includes a connecting unit for limiting and fixing the first knee sleeve and the second knee sleeve; the protective cover plate is used to fix and limit the first knee sleeve and the second knee sleeve while protecting them.

[0008] Optionally, the connecting unit includes a pair of clamping blocks fixedly connected to the opposite side surfaces of the first sleeve and the second sleeve and the opposite side surfaces of the third sleeve and the fourth sleeve, respectively, and both ends of the clamping blocks are provided with clamping block slots, and both sides of the first knee sleeve and the second knee sleeve are provided with corresponding limiting slots; the inner wall of the protective cover is provided with a clamping block embedding groove corresponding to the clamping block, and the inner walls of the clamping block embedding groove are fixedly connected with first clamping block strips corresponding to the clamping block slot, and both ends of the protective cover are fixedly connected with limiting strips corresponding to the limiting slots.

[0009] Optionally, the limit adjustment structure includes a first rotating block fixedly connected to one side of the first pad, a second rotating block fixedly connected to one side of the second pad at a position corresponding to the first rotating block, and the second rotating block and the first rotating block are hinged to each other; and also includes an adjustment unit for adjusting the second rotating block and the first rotating block.

[0010] Optionally, the adjustment unit includes a gear plate fixedly connected to the rotating shaft on the second rotating block; both ends of the first rotating block are rotatably connected to a rotating rod, and the rotating rod is provided with a latching tooth at one end close to the gear plate, and the latching tooth is engaged with the gear plate.

[0011] Optionally, a connecting plate is fixedly connected between the two rotating rods, an adjustment strip is fixedly connected to one side of the connecting plate, and the first rotating block and the adjustment strip are provided with matching adjustment slots at corresponding positions; the top of the adjustment strip is a cylindrical structure, and the middle positions on both sides of the adjustment strip are semicircular raised structures.

[0012] Optionally, a first mounting slot is provided on one side of the ankle segment, and a second mounting slot is provided on the side of the first knee sleeve opposite to the ankle segment; the bracket structure includes a first connecting plate and a second connecting plate fixedly connected to the first mounting slot and the second mounting slot respectively, and a first display frame and a second display frame are fixedly connected to the first connecting plate and the second connecting plate respectively, the first display frame and the second display frame have the same shape and structure, both ends of the first display frame and the second display frame are fixedly connected to threaded rods, the two threaded rods are connected to an annular frame structure, and the annular frame structure is connected to a fixing pin structure.

[0013] Optionally, the annular frame structure includes a sliding sleeve slidably connected to the threaded rod, an arc-shaped annular frame is fixedly connected between the two sliding sleeves, an arc-shaped connecting groove is provided on the annular frame, and a plurality of evenly distributed fixing holes are provided on the annular frame, and the sliding sleeve and the threaded rod are fixedly connected by screw rings on both sides of the sliding sleeve.

[0014] Optionally, the fixed needle structure includes a clamping plate fixedly connected to the arc-shaped connecting groove, the clamping plate is provided with a through hole adapted to the fixing hole, a steel needle plate is fixedly connected to the top of the clamping plate, a steel needle hole is provided on the steel needle plate, a fastening hole connected to the steel needle hole is provided on one side of the steel needle plate, a steel needle is installed in the steel needle hole, a fastening bolt is rotatably connected to the fastening hole, and the steel needle and the steel needle plate are fixedly connected by the fastening bolt.

[0015] Optionally, a butt joint is provided on the ankle section, and a second clamping block is fixedly connected to both sides of the ankle section near the butt joint, connecting slots are provided on both sides of the second clamping block, and a fastening unit is connected to the second clamping block; the fastening unit includes a fastening block sleeved on the second clamping block, and second clamping block strips are fixedly connected on both sides of the inner wall of the fastening block, and the fastening block and the second clamping block are fixedly connected by the second clamping block strip and the connecting slot.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] In the above scheme, by setting up the foot structure and the knee structure, the support structure is installed through the foot structure and the knee structure, so that the weight of the support structure itself is borne by the patient's foot and knee parts, reducing the pressure on the patient's tibia and making the entire support structure more stable.

[0018] By setting up a limit adjustment structure and a calf pad, the limit adjustment structure is used to adjust the knee structure so that the knee structure can be adjusted as the patient recovers, allowing the patient to perform rehabilitation training; the calf pad can increase the comfort of the patient's legs when placing their legs, without the need to use special support pads or pillows to help stabilize the legs.

[0019] By setting up a ring frame, the arc-shaped ring frame makes it easy to install steel needles in various directions above the calf, so that the fracture site can be fixed in multiple directions, the stress from the fracture site can be dispersed, and it helps to evenly distribute the pressure to different parts of the bone instead of concentrating it in a small area, avoiding local excessive stress. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable one skilled in the art to make and use the invention.

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of an external fixation mechanism used in trauma orthopedics;

[0022] Figure 2 A schematic diagram of the three-dimensional structure of the external fixation mechanism used in trauma orthopedics and assembled with the human body;

[0023] Figure 3 This is a schematic diagram of the multi-view stereoscopic structure of the knee structure;

[0024] Figure 4 for Figure 3 Schematic diagram of the three-dimensional structure at A in the middle;

[0025] Figure 5 Schematic diagram of the three-dimensional structure of the protective cover;

[0026] Figure 6 A schematic diagram of the first-person perspective structure of the knee pad and the limit adjustment structure;

[0027] Figure 7 A schematic diagram of the second perspective stereoscopic structure of the knee pad and the limit adjustment structure;

[0028] Figure 8 for Figure 7 Schematic diagram of the three-dimensional structure at B in the middle;

[0029] Figure 9 Schematic diagram of the three-dimensional structure of the bracket structure;

[0030] Figure 10 for Figure 9 Schematic diagram of the three-dimensional structure at C in the middle;

[0031] Figure 11 It is a schematic diagram of the exploded three-dimensional structure of the fixed needle structure and the annular frame structure;

[0032] Figure 12 It is a schematic diagram of the three-dimensional structure of the foot;

[0033] Figure 13 It is a schematic diagram of the three-dimensional structure of the fastening unit.

[0034] Reference numerals:

[0035] 1. Knee structure; 11. Knee pad; 111. First pad; 112. Second pad; 12. First knee sleeve; 121. First sleeve section; 122. Second sleeve section; 13. Second knee sleeve; 131. Third sleeve section; 132. Fourth sleeve section; 14. Limiting slot; 15. Weakening slot; 16. Clamp; 161. Clamping slot; 2. Limiting adjustment structure; 21. Second rotating block; 211. Gear plate; 22. First rotating block; 221. Adjusting slot; 23. Rotating rod; 24. Connecting plate; 241. Adjusting strip; 25. Gear; 3. Protective cover; 31. Clamping slot; 311. First clamping strip; 32. Limiting strip; 4 , calf pad; 5. Foot structure; 51. Second clamping block; 52. Heel section; 53. Ankle section; 6. Bracket structure; 61. First display frame; 611. First connecting plate; 62. Second display frame; 621. Second connecting plate; 63. Threaded rod; 64. Fixing needle structure; 641. Clamping plate; 642. Steel needle plate; 643. Steel needle hole; 644. Steel needle; 645. Fastening bolt; 646. Fastening hole; 647. Through hole; 65. Ring frame structure; 651. Sliding sleeve; 652. Screw ring; 653. Ring frame; 654. Arc-shaped connecting groove; 655. Fixing hole; 7. Fastening unit; 71. Fastening block; 72. Second clamping block clip.

[0036] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0037] The following describes in detail an external fixation mechanism for orthopedic trauma provided by the present invention, with reference to the accompanying drawings and specific embodiments. It is also noted that, for the sake of completeness, the following embodiments are best and preferred embodiments, and those skilled in the art may employ alternative implementations for known techniques. Furthermore, the accompanying drawings are intended only to provide a more detailed description of the embodiments and are not intended to limit the present invention.

[0038] It should be noted that references in the specification to "one embodiment," "an embodiment," "exemplary embodiments," "some embodiments," etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment will include such specific features, structures, or characteristics. Furthermore, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is within the knowledge of persons skilled in the relevant art to implement such features, structures, or characteristics in conjunction with other embodiments (whether or not explicitly described).

[0039] In general, terms can be understood, at least in part, from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending at least in part on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0040] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” means not only “directly on” something but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” means not only “on” or “above” something but also includes the meaning of being “on” or “above” something with no intervening features or layers.

[0041] Additionally, spatially relative terms such as "below," "beneath," "lower," "above," and "upper" may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as illustrated in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein should be similarly interpreted accordingly.

[0042] like Figures 1 to 13As shown, an embodiment of the present invention provides an external fixation mechanism for trauma orthopedics, comprising a foot structure 5 sleeved on the patient's foot and a knee structure 1 sleeved on the patient's knee, the foot structure 5 is placed on the patient's foot, and the knee structure 1 is placed at the patient's knee position, and the support structure 6 is installed through the foot structure 5 and the knee structure 1, so that the weight of the support structure 6 itself is borne by the patient's foot and knee, reducing the pressure on the patient's tibia, and making the entire support structure 6 more stable; the knee structure 1 comprises a knee pad 11 adapted to the patient's knee fossa, a first knee sleeve 12 adapted to the connection between the patient's knee and tibia, and a second knee sleeve 13 adapted to the connection between the patient's knee and femur, the first knee sleeve 12 and the second knee sleeve 13 are fixedly connected to the two ends of the knee pad 11 respectively, the knee pad 11, the first knee sleeve 12 and the second knee sleeve 13 are respectively sleeved in a triangular shape at the patient's knee position, and the patient's thigh and calf positions are fixed through the knee structure 1. Restriction; the foot structure 5 includes a heel section 52 adapted to the patient's heel and an ankle section 53 adapted to the patient's ankle, and the heel section 52 and the ankle section 53 cooperate to wrap around the patient's foot position; a support structure 6 is connected between the ankle section 53 and the first knee sleeve 12, and the support structure 6 is used to reduce and fix the patient's fracture site, and a calf pad 4 is connected between the ankle section 53 and the knee pad 11. The shape of the calf pad 4 is adapted to the shape of the patient's calf, and the calf pad 4 is used to adapt to the shape of the patient's calf. Since the fracture site needs to be reduced and fixed for a long time, the calf pad 4 can increase the comfort of the patient's leg when the leg is placed, and there is no need to use a special support pad or pillow to help stabilize the leg; it also includes a limit adjustment structure 2 for limiting the knee pad 11. The limit adjustment structure 2 is used to adjust the knee structure 1 so that the knee structure 1 can be adjusted as the patient recovers, so that the patient can perform rehabilitation training.

[0043] like Figures 1 to 5As shown, a weakening groove 15 is provided at the middle position of the outer side of the knee pad 11, and the weakening groove 15 separates the knee pad 11 into a first pad 111 and a second pad 112. When the patient needs to perform rehabilitation training, the limit between the first pad 111 and the second pad 112 is released through the limit adjustment structure 2, thereby releasing the limit between the patient's thigh and calf, so that the patient's knee can bend; the first knee sleeve 12 is composed of a first sleeve section 121 and a second sleeve section 122, and the first sleeve section 121 and the second sleeve section 122 are respectively fixedly connected to the two sides of the first pad 111, and the first sleeve section 121 and the second sleeve section 122 are respectively adapted to the position of the patient's knee and tibia; the second knee sleeve 13 is composed of a third sleeve section 131 and a fourth sleeve section 132, and the third sleeve section 131 and the fourth sleeve section 132 are respectively fixedly connected to the two sides of the second pad 112, and the third sleeve section 131 and The fourth section 132 is adapted to the patient's knee and femur respectively, and is snapped into the corresponding position of the patient by unfolding the first section 121, the second section 122, the third section 131 and the fourth section 132, so as to install the first knee cuff 12 and the second knee cuff 13; the first knee cuff 12 and the second knee cuff 13 are connected to the protective cover plate 3, and the inner side of the protective cover plate 3 is adapted to fit the inner wall of the first knee cuff 12 and the second knee cuff 13, and the protective cover plate 3 is used to fix and limit the first knee cuff 12 and the second knee cuff 13 while protecting them. In the early stage of the patient's fracture fixation, the first knee cuff 12 and the second knee cuff 13 will lock the patient's knee, preventing it from bending, thereby avoiding excessive bending angle of the patient's knee, making the fracture site inaccurate and affecting the speed and quality of fracture healing; it also includes a connection unit for limiting and fixing the first knee cuff 12 and the second knee cuff 13.

[0044] The connecting unit includes a pair of clamping blocks 16 fixedly connected to the opposite side surfaces of the first sleeve section 121 and the second sleeve section 122 and the opposite side surfaces of the third sleeve section 131 and the fourth sleeve section 132, respectively. Both ends of the clamping block 16 are provided with a clamping block slot 161, and both sides of the first knee sleeve 12 and the second knee sleeve 13 are provided with corresponding limiting slots 14; the inner wall of the protective cover 3 is provided with a clamping block embedding groove 31 adapted thereto at a position corresponding to the clamping block 16, and the inner wall of the clamping block embedding groove 31 is fixedly connected with a first clamping block strip 311 adapted to the clamping block slot 161 on both sides, and the two ends of the protective cover 3 are fixed at positions corresponding to the limiting slots 14 The first and second knee cuffs 12, 13 are fixedly connected with a limiting clip 32 adapted thereto. When locking the first and second knee cuffs 12, 13, the protective cover 3 is pressed and snapped onto the first and second knee cuffs 12, 13 until the limiting clip 32 is snapped into the limiting slot 14, thereby wrapping the first and second knee cuffs 12, 13 and limiting them so that the first and second knee cuffs 12, 13 will not unfold. At the same time, the clamping block embedding groove 31 is correspondingly snapped into the clamping block 16, and the first clamping block clip 311 is snapped into the clamping block slot 161, thereby limiting the protective cover 3 through the clamping block embedding groove 31 and the clamping block 16 to prevent the protective cover 3 from slipping.

[0045] like Figure 1 、 Figure 3 and Figures 6 to 8 As shown, the limit adjustment structure 2 includes a first rotating block 22 fixedly connected to one side of the first pad 111, a second rotating block 21 fixedly connected to one side of the second pad 112 at a position corresponding to the first rotating block 22, and the second rotating block 21 and the first rotating block 22 are hinged to each other; it also includes an adjustment unit for adjusting the second rotating block 21 and the first rotating block 22; the adjustment unit includes a gear plate 211 fixedly connected to the rotating shaft on the second rotating block 21; both ends of the first rotating block 22 are rotatably connected There is a rotating rod 23, and a tooth 25 is provided at one end of the rotating rod 23 close to the gear plate 211. The tooth 25 is meshed with the gear plate 211. A connecting plate 24 is fixedly connected between the two rotating rods 23. An adjustment clip 241 is fixedly connected to one side of the connecting plate 24. An adjustment slot 221 adapted to the first rotating block 22 and the adjustment clip 241 is provided at a position corresponding to the first rotating block 22. The top of the adjustment clip 241 is a cylindrical structure, and the middle position of the two sides of the adjustment clip 241 is a semicircular protrusion structure.

[0046] When the patient's knee bends, the first pad 111 and the second pad 112 will bend on the weakened groove 15. When bending, the first rotating block 22 and the second rotating block 21 rotate relative to each other. When it is necessary to limit the knee pad 11, the patient's legs are straightened. At this time, the first pad 111 and the second pad 112 are in the initial position, so the first rotating block 22 and the second rotating block 21 are also in the initial state. The rotating rod 23 is rotated so that the tooth 25 at the top of the rotating rod 23 is engaged with the gear plate 211. At the same time, when the tooth 25 is engaged with the gear plate 211, the adjusting clip 241 on the connecting plate 24 is completely engaged with the adjusting clip slot 221. , fix the connecting plate 24 to prevent the teeth 25 from falling off from the gear plate 211 when the patient moves his legs. The teeth 25 and the gear plate 211 cooperate with each other to lock the first rotating block 22 and the second rotating block 21, thereby limiting the first pad 111 and the second pad 112. When the patient needs to perform rehabilitation training, the middle position of the adjustment strip 241 is inserted into the adjustment slot 221, thereby limiting the adjustment strip 241. At the same time, the teeth 25 on the rotating rod 23 do not contact the gear plate 211, releasing the restriction between the first rotating block 22 and the second rotating block 21, thereby releasing the restriction on the patient's knee.

[0047] like Figure 1 、 Figure 3 、 Figure 9 and Figure 12 As shown, a first mounting slot is provided on one side of the ankle section 53, and a second mounting slot is provided on the side of the first knee sleeve 12 opposite to the ankle section 53. The first mounting slot and the second mounting slot are used to adapt to the bracket structure 6; the bracket structure 6 includes a first connecting plate 611 and a second connecting plate 621 fixedly connected to the first mounting slot and the second mounting slot, respectively. The first mounting slot and the second mounting slot are fixed to the first connecting plate 611 and the second connecting plate 621 of the bracket structure 6, and the first connecting plate 611 and the second connecting plate 621 are respectively fixedly connected to the first display frame 61 The shape and structure of the first and second display racks 61 and 62 are consistent with each other. Both ends of the first and second display racks 61 and 62 are fixedly connected with threaded rods 63. The two threaded rods 63 are connected with an annular frame structure 65. The annular frame structure 65 is connected with a fixing pin structure 64. The fracture site of the patient is reduced and fixed by a plurality of fixing pin structures 64. Several annular frame structures 65 can be installed according to specific circumstances. The annular frame structure 65 provides an installation position for the fixing pin structure 64, and the position of the annular frame structure 65 can be adjusted on the threaded rods 63.

[0048] When installing the support structure 6, the first connecting plate 611 and the second connecting plate 621 of the support structure 6 are fixedly connected to the first mounting groove and the second mounting groove respectively. Then, the number of annular frame structures 65 that need to be fixed is selected according to the patient's fracture condition, the annular frame structure 65 is installed on the threaded rod 63, and then the fixing pin structure 64 is fixedly installed on the annular frame structure 65.

[0049] like Figure 1 and Figures 9 to 11 The annular frame structure 65 includes a sleeve 651 slidably connected to the threaded rod 63. The inner diameter of the sleeve 651 is consistent with the diameter of the threaded rod 63, so the sleeve 651 can slide on the threaded rod 63. An arc-shaped annular frame 653 is fixedly connected between the two sleeves 651. The annular frame 653 with an arc structure is convenient for installing steel pins 644 in various directions above the calf, so that the fracture site can be fixed in multiple directions, the stress from the fracture site is dispersed, and it helps to evenly distribute the pressure to different parts of the bone instead of concentrating it in a small range to avoid local excessive stress. An arc-shaped groove 654 is provided on the annular frame 653. The arc-shaped groove 654 is used to provide a mounting position for the clamping plate 641. A number of evenly distributed fixing holes 655 are provided on the annular frame 653. The fixing holes 655 are used to adapt to the through holes 647. The clamping plate 641 is then fixed to the arc-shaped groove 654 by bolts. The sleeve 651 and the threaded rod 63 are connected by the sleeve 65 The screw rings 652 on both sides are fixedly connected. The two screw rings 652 rotate on the threaded rod 63, thereby fixing the sliding sleeve 651 on the threaded rod 63. The fixing needle structure 64 includes a clamping plate 641 fixedly connected to the arc-shaped connecting groove 654. The height of the clamping plate 641 is slightly higher than the depth of the arc-shaped connecting groove 654, and the shape of the clamping plate 641 is adapted to the arc-shaped connecting groove 654. A through hole 647 adapted to the fixing hole 655 is opened on the clamping plate 641. The top of the clamping plate 641 is fixedly connected to the arc-shaped connecting groove 654. A steel needle plate 642 is connected, and the steel needle plate 642 is used to fix the steel needle 644. A steel needle hole 643 is provided on the steel needle plate 642. The inner diameter of the steel needle hole 643 is consistent with the diameter of the steel needle 644. A fastening hole 646 connected to the steel needle hole 643 is provided on one side of the steel needle plate 642. The steel needle 644 is installed in the steel needle hole 643. A fastening bolt 645 is rotatably connected to the fastening hole 646. The steel needle 644 and the steel needle plate 642 are fixedly connected by the fastening bolt 645.

[0050] During use, the doctor needs to align the bones at both ends of the fracture, pass the steel needle 644 through the bone through the skin, muscles and other soft tissues, and directly penetrate the bone at both ends of the fracture, and then adjust the fracture alignment. After the steel needle 644 is fixed, insert the steel needle 644 into the steel needle hole 643 on the steel needle plate 642, and then rotate the fastening bolt 645 to fix the steel needle 644 on the steel needle plate 642, and then place the clamping plate 641 on the arc-shaped connecting groove 654 according to the direction of the steel needle 644, and fix the clamping plate 641 on the arc-shaped connecting groove 654 by passing the bolt through the fixing hole 655 and the through-hole 647, and finally fix the annular frame 653 on the threaded rod 63.

[0051] like Figure 1 、 Figure 12 and Figure 13 As shown, a butt joint is provided on the ankle section 53, and a second clamping block 51 is fixedly connected to both sides of the ankle section 53 near the butt joint, and connecting slots are provided on both sides of the second clamping block 51, and a fastening unit 7 is connected to the second clamping block 51; the fastening unit 7 includes a fastening block 71 sleeved on the second clamping block 51, and second clamping block strips 72 are fixedly connected on both sides of the inner wall of the fastening block 71, and the fastening block 71 and the second clamping block 51 are fixedly connected through the second clamping block strip 72 and the connecting slot. The two ankle sections 53 are fixed to the second clamping block 51 through the fastening unit 7. When fixing, the fastening block 71 is pressed against the two fitted second clamping blocks 51 until the second clamping block strip 72 on the fastening block 71 is snapped into the clamping block slot 161 on the second clamping block 51.

[0052] The working principle of the technical solution provided by the present invention is as follows: first, the knee structure 1 and the foot structure 5 are installed on the patient's knee and foot respectively. When installing the foot structure 5, the ankle section 53 is unfolded, and the patient's foot is placed in the corresponding heel section 52 and ankle section 53. Then, the two second clamping blocks 51 are closed, and the fastening unit 7 is clamped on the second clamping block 51 to fix it in place; when installing the knee structure 1, the knee pit pad 11 is fitted with the patient's knee pit position, and then the first sleeve section 121 and the second sleeve section 122 on the first knee sleeve 12 are separated and sleeved on the connection between the patient's knee and tibia, and the third sleeve section 131 and the fourth sleeve section 132 are separated and sleeved on the connection between the patient's knee and femur, and then The first knee cuff 12 and the second knee cuff 13 are locked, and the protective cover 3 is pressed and inserted into the first knee cuff 12 and the second knee cuff 13 until the limiting strip 32 is inserted into the limiting slot 14, thereby wrapping the first knee cuff 12 and the second knee cuff 13 and limiting the position. At the same time, the patient's legs are straightened, and the first pad 111 and the second pad 112 are in the initial position. Therefore, the first rotating block 22 and the second rotating block 21 are also in the initial state. The rotating rod 23 is rotated so that the tooth 25 at the top of the rotating rod 23 is inserted into the gear plate 211, and then the first pad 111 and the second pad 112 are fixed to the knee structure 1 through the limiting adjustment structure 2 and the protective cover 3, thereby limiting and fixing the patient's knee.

[0053] Install the bracket structure 6, and fix the first connecting plate 611 and the second connecting plate 621 of the bracket structure 6 to the first mounting groove and the second mounting groove respectively, and then select the number of annular frame structures 65 and fixing needle structures 64 that need to be fixed according to the patient's fracture condition. When in use, the doctor needs to align the bones at both ends of the fracture, pass the steel needle 644 through the bone through the skin, muscles and other soft tissues, and directly penetrate the bone at both ends of the fracture, and then adjust the fracture alignment. After the steel needle 644 is fixed, insert the steel needle 644 into the steel needle hole 643 on the steel needle plate 642, and then rotate the fastening bolt 645 to fix the steel needle 644 on the steel needle plate 642, and then select the clamping plate 641 to be placed on the arc connecting groove 654 according to the direction of the steel needle 644, and fix the clamping plate 641 on the arc connecting groove 654 by passing the bolt through the fixing hole 655 and the through-hole 647, and finally fix the annular frame 653 on the threaded rod 63.

[0054] When the patient's fracture heals to the mid-term stage of 6-12 weeks, the patient can start mild rehabilitation training to restore joint mobility, muscle strength and reduce long-term functional impairment. At this time, the protective cover 3 is removed, and then the fastening unit 7 is installed on the clamping block 16 of the first knee cuff 12 and the second knee cuff 13. The first knee cuff 12 and the second knee cuff 13 are limited by the fastening unit 7, and the middle position of the adjustment strip 241 is inserted into the adjustment slot 221. While limiting the adjustment strip 241, the teeth 25 on the rotating rod 23 do not contact the gear plate 211, and the restriction between the first rotating block 22 and the second rotating block 21 is released, thereby releasing the restriction on the patient's knee, so that the patient can perform rehabilitation training.

[0055] The present invention encompasses any alternatives, modifications, equivalents, and solutions that fall within the spirit and scope of the present invention. To provide a thorough understanding of the present invention, specific details are described in detail below in connection with the preferred embodiments of the present invention, but those skilled in the art will be able to fully understand the present invention without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of the present invention, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0056] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An external fixation mechanism for trauma orthopedics, characterized in that: It includes a foot structure that is mounted on the patient's foot and a knee structure that is mounted on the patient's knee; The knee structure includes a knee pad adapted to the patient's knee fossa, a first knee sleeve adapted to the connection between the patient's knee and tibia, and a second knee sleeve adapted to the connection between the patient's knee and femur, wherein the first knee sleeve and the second knee sleeve are respectively fixedly connected to the two ends of the knee pad; A weakened groove is provided at the middle position of the outer side of the knee pad, and the weakened groove separates the knee pad into a first pad and a second pad; The foot structure includes a heel section adapted to fit the patient's heel and an ankle section adapted to fit the patient's ankle; A support structure is connected between the ankle section and the first knee sleeve, and a calf pad is connected between the ankle section and the knee pad, wherein the shape of the calf pad is adapted to the shape of the patient's calf; A first mounting groove is formed on one side of the ankle section, and a second mounting groove is formed on a side of the first knee sleeve opposite to the ankle section; The bracket structure includes a first connecting plate and a second connecting plate fixedly connected to the first mounting slot and the second mounting slot, respectively. A first display rack and a second display rack are fixedly connected to the first connecting plate and the second connecting plate, respectively. The first display rack and the second display rack have the same shape and structure. Both ends of the first display rack and the second display rack are fixedly connected to threaded rods. The two threaded rods are connected to an annular frame structure, and the annular frame structure is connected to a fixing pin structure. The annular frame structure includes a sliding sleeve slidably connected to the threaded rod, an arc-shaped annular frame is fixedly connected between the two sliding sleeves, an arc-shaped connecting groove is opened on the annular frame, and a plurality of evenly distributed fixing holes are opened on the annular frame; The fixed needle structure includes a clamping plate fixedly connected to the arc-shaped connecting groove, the clamping plate is provided with a through hole adapted to the fixing hole, the top of the clamping plate is fixedly connected to a steel needle plate, the steel needle plate is provided with a through steel needle hole, and one side of the steel needle plate is provided with a fastening hole connected to the steel needle hole, and a steel needle is installed in the steel needle hole; Also included is a position limiting adjustment structure for limiting the position of the knee pad; The position limiting adjustment structure includes a first rotating block fixedly connected to one side of the first pad, a second rotating block fixedly connected to one side of the second pad at a position corresponding to the first rotating block, and the second rotating block and the first rotating block are hinged to each other; It also includes an adjustment unit for adjusting the second rotating block and the first rotating block.

2. The in vitro fixation mechanism for orthopedic trauma according to claim 1, characterized in that: The first knee sleeve is composed of a first sleeve section and a second sleeve section, and the first sleeve section and the second sleeve section are respectively fixedly connected to two sides of the first pad; The second knee sleeve is composed of a third sleeve section and a fourth sleeve section, and the third sleeve section and the fourth sleeve section are respectively fixedly connected to two sides of the second pad; The first knee sleeve and the second knee sleeve are connected to a protective cover plate, and the inner side of the protective cover plate fits in contact with the inner wall of the first knee sleeve and the second knee sleeve; It also includes a connecting unit for limiting and fixing the first knee sleeve and the second knee sleeve; The protective cover is used to fix and limit the first knee cuff and the second knee cuff while protecting them.

3. The in vitro fixation mechanism for orthopedic trauma according to claim 2, characterized in that: The connecting unit includes a pair of clamping blocks fixedly connected to the opposite side surfaces of the first sleeve segment and the second sleeve segment and the opposite side surfaces of the third sleeve segment and the fourth sleeve segment, respectively. Both ends of the clamping blocks are provided with clamping block slots, and both sides of the first knee sleeve and the second knee sleeve are provided with corresponding limiting slots. The inner wall of the protective cover plate is provided with a clamping block embedding groove corresponding to the position of the clamping block, and the first clamping block clip that is compatible with the clamping block slot is fixedly connected to both sides of the inner wall of the clamping block embedding groove, and the two ends of the protective cover plate are fixedly connected with limiting clips that are compatible with the position corresponding to the limiting clip slot.

4. The in vitro fixation mechanism for orthopedic trauma according to claim 1, characterized in that: The adjusting unit includes a gear plate fixedly connected to the rotating shaft of the second rotating block; Both ends of the first rotating block are rotatably connected to a rotating rod, and one end of the rotating rod close to the gear plate is provided with a latching tooth, and the latching tooth is meshed and linked with the gear plate.

5. The in vitro fixation mechanism for orthopedic trauma according to claim 4, characterized in that: A connecting plate is fixedly connected between the two rotating rods, an adjustment clip is fixedly connected to one side of the connecting plate, and an adjustment slot adapted to the first rotating block is provided at a position corresponding to the adjustment clip. The top of the adjusting clip is a cylindrical structure, and the middle positions on both sides of the adjusting clip are semicircular raised structures.

6. The in vitro fixation mechanism for orthopedic trauma according to claim 1, characterized in that: The sliding sleeve and the threaded rod are fixedly connected via screw rings on both sides of the sliding sleeve.

7. The in vitro fixation mechanism for orthopedic trauma according to claim 1, characterized in that: A fastening bolt is rotatably connected to the fastening hole, and the steel needle and the steel needle plate are fixedly connected by the fastening bolt.

8. The in vitro fixation mechanism for orthopedic trauma according to claim 1, characterized in that: The ankle section is provided with a butt joint, and the ankle section is fixedly connected to a second clamping block on both sides close to the butt joint, and the second clamping block is provided with a connecting slot on both sides, and the second clamping block is connected to a fastening unit; The fastening unit includes a fastening block sleeved on the second clamping block, and second clamping block strips are fixedly connected to both sides of the inner wall of the fastening block. The fastening block and the second clamping block are fixedly connected through the second clamping block strip and the connecting slot.

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