In-vitro fixing mechanism for traumatic orthopedics department

Abstract

The invention provides an in-vitro fixing mechanism for traumatic orthopedics, and belongs to the technical field of orthopedics external fixation. Comprising a foot structure arranged on the foot of a patient in a sleeving mode and a knee structure arranged on the knee of the patient in a sleeving mode. The knee structure comprises a knee fossa pad matched with the knee fossa of the patient, a first knee sleeve matched with the joint of the knee of the patient and the tibia and a second knee sleeve matched with the joint of the knee of the patient and the thighbone, and the first knee sleeve and the second knee sleeve are fixedly connected to the two ends of the knee fossa pad respectively; the foot structure comprises a heel section matched with the heel of the patient and an ankle section matched with the ankle of the patient. The foot structure and the knee structure are arranged, the support structure is installed through the foot structure and the knee structure, the weight of the support structure is borne by the foot and the knee of a patient, pressure borne by the tibia of the patient is reduced, and meanwhile the whole support structure is more stable.

Description

Technical Field

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

[0002] Orthopedic external fixators are surgical medical devices commonly used to treat fractures, bone defects or bone and joint diseases. Especially in the case of complex fractures or severe trauma, they can effectively fix the fracture site and help bone healing. Usually composed of metal rods, screws and connectors, they are externally fixed around the bones. These devices maintain the stability of the fracture ends and avoid displacement of the fracture site until the bone heals.

[0003] 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 does not operate it properly, the fracture injury is likely to increase. At the same time, its 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 extracorporeal fixation mechanism for trauma orthopedics to solve the problem that when the existing orthopedic extracorporeal 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 increase. 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.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: 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 the 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, a calf pad is connected between the ankle section and the knee pad, and the shape of the calf pad is adapted to the shape of the patient's calf; and a limit adjustment structure for limiting the knee pad is also included.

[0006] 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 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 the 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 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 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 plate is used to fix and limit the first knee sleeve and the second knee sleeve while protecting them.

[0007] Optionally, the connecting unit includes a pair of clamping blocks fixedly connected to the opposite side surfaces of the first sleeve section and the second sleeve section and the opposite side surfaces of the third sleeve section and the fourth sleeve section 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 clamping block, and the first clamping block strips matching the clamping block slots are fixedly connected to the two 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 strips matching the limiting slots.

[0008] 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.

[0009] Optionally, the adjustment unit includes a gear plate fixedly connected to a rotating shaft on the second rotating block; both ends of the first rotating block are rotatably connected to a rotating rod, and a latch tooth is provided at one end of the rotating rod close to the gear plate, and the latch tooth is meshed and linked with the gear plate.

[0010] 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 protrusion structures.

[0011] Optionally, a first mounting groove is formed on one side of the ankle section, and a second mounting groove is formed on the 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 groove and the second mounting groove 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.

[0012] 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, 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.

[0013] 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 matched with the fixing hole, a steel needle plate is fixedly connected to the top of the clamping plate, the steel needle plate is provided with a penetrating steel needle hole, one side of the steel needle plate is provided with a fastening hole connected to the steel needle hole, 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.

[0014] Optionally, a butt joint is provided on the ankle section, and second clamping blocks are fixedly connected to the ankle section on both sides close to 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 to both sides of the inner wall of the fastening block, and the fastening block and the second clamping block are fixedly connected by the cooperation of the second clamping block strip and the connecting slots.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: 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.

[0016] By setting 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, so that the patient can perform rehabilitation training; the calf pad can increase the comfort of the patient's legs when the patient places his legs, without the need to use special support pads or pillows to help stabilize the legs.

[0017] By setting up a ring frame, the arc-shaped ring frame facilitates the installation of steel needles in various directions above the calf, so that the fracture site can be fixed in multiple directions, dispersing the stress from the fracture site, and helping 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

[0018] 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 those skilled in the relevant art to make and use the invention.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of an extracorporeal fixation mechanism used in trauma orthopedics; Figure 2 A schematic diagram of the three-dimensional structure of the external fixation mechanism and the human body used in trauma orthopedics; Figure 3 It is a schematic diagram of the multi-view stereoscopic structure of the knee structure; Figure 4 for Figure 3 Schematic diagram of the three-dimensional structure at A in the middle; Figure 5 It is a schematic diagram of the three-dimensional structure of the protective cover; Figure 6 A schematic diagram of a first-person perspective stereoscopic structure of a knee pad and a limit adjustment structure; Figure 7 A schematic diagram of a second-view stereoscopic structure of a knee pad and a limit adjustment structure; Figure 8 for Figure 7 Schematic diagram of the three-dimensional structure at B in the middle; Fig. 9 It is a schematic diagram of the three-dimensional structure of the support structure; Fig.10 for Fig. 9 Schematic diagram of the three-dimensional structure at C in the middle; Fig.11 It is a schematic diagram of the exploded three-dimensional structure of the fixed needle structure and the annular frame structure; Fig.12 It is a three-dimensional structural diagram of the foot; Fig.13 It is a schematic diagram of the three-dimensional structure of the fastening unit.

[0020] Reference numerals: 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. Weakened slot; 16. Clamp; 161. Clamp 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. Clamp embedded slot; 311. First clamp 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, annular frame structure; 651, sliding sleeve; 652, screw ring; 653, annular frame; 654, arc-shaped connecting groove; 655, fixing hole; 7, fastening unit; 71, fastening block; 72, second clamping block clamping strip.

[0021] 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

[0022] The following is a detailed description of an external fixation mechanism for trauma orthopedics provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0023] It should be noted that the references to "one embodiment", "embodiment", "exemplary embodiments", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0024] In general, a term can be understood, at least in part, from its 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.

[0025] 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” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0026] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown 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 may be similarly interpreted accordingly.

[0027] like Figures 1 to 13As shown, an embodiment of the present invention provides an extracorporeal fixation mechanism for trauma orthopedics, comprising a foot structure 5 sleeved on a patient's foot and a knee structure 1 sleeved on a patient's knee, the foot structure 5 is placed on the patient's foot, the knee structure 1 is placed at the patient's knee position, 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 position, 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 position 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, 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, the support structure 6 is used to reposition and fix the patient's fracture site, 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, the calf pad 4 is used to adapt to the shape of the patient's calf, because the fracture site needs to be repositioned and fixed for a long time, the calf pad 4 can increase the comfort of the patient's leg when the patient places the leg, without the 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.

[0028] like Figures 1 to 5As shown, a weakened groove 15 is provided at the middle position of the outer side of the knee pad 11, and the weakened 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 restriction 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 sleeve section 132 are respectively fixedly connected to the two sides of the second pad 112. The fourth section 132 is respectively adapted to the patient's knee and femur, 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 sleeve 12 and the second knee sleeve 13; the first knee sleeve 12 and the second knee sleeve 13 are connected with a protective cover plate 3, and the inner side of the protective cover plate 3 is adapted to fit with the inner wall of the first knee sleeve 12 and the second knee sleeve 13, and the protective cover plate 3 is used to fix and limit the first knee sleeve 12 and the second knee sleeve 13 while protecting them. In the early stage of the patient's fracture fixation, the first knee sleeve 12 and the second knee sleeve 13 lock the patient's knee, and cannot perform bending movement, so as to avoid the patient's knee bending angle being too large, resulting in inaccurate alignment of the fracture site, affecting the speed and quality of fracture healing; it also includes a connecting unit for limiting and fixing the first knee sleeve 12 and the second knee sleeve 13.

[0029] The connecting unit includes a pair of clamping blocks 16 respectively 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, 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 fixedly connected to the positions corresponding to the limiting slots 14 It is connected with a matching limiting card strip 32. When the first knee sleeve 12 and the second knee sleeve 13 are locked, the protective cover 3 is pressed and inserted into the first knee sleeve 12 and the second knee sleeve 13 until the limiting card strip 32 is inserted into the limiting card slot 14, thereby wrapping the first knee sleeve 12 and the second knee sleeve 13 and limiting them, so that the first knee sleeve 12 and the second knee sleeve 13 will not unfold. At the same time, the clamping block embedding groove 31 is correspondingly inserted into the clamping block 16, and the first clamping block card strip 311 is inserted into the clamping block groove 161, so that the protective cover 3 is limited by the clamping block embedding groove 31 and the clamping block 16 to prevent the protective cover 3 from slipping.

[0030] 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 is 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 and connected with the gear plate 211. A connecting plate 24 is fixedly connected between the two rotating rods 23, and an adjusting clip 241 is fixedly connected to one side of the connecting plate 24. The first rotating block 22 and the adjusting clip 241 are provided with an adjusting slot 221 adapted thereto at the corresponding position; the top of the adjusting clip 241 is a cylindrical structure, and the middle position of the two sides of the adjusting clip 241 is a semicircular convex structure. 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 the knee pad 11 needs to be limited, the patient's legs are straightened. At this time, the first pad 111 and the second pad 112 are located at 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 inserted into the gear plate 211. At the same time, when the tooth 25 is inserted into the gear plate 211, the adjusting clip 241 on the connecting plate 24 is completely inserted into the adjusting clip groove 221. , fix the connecting plate 24 to prevent the tooth 25 from falling off from the gear plate 211 when the patient moves his legs. The tooth 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 tooth 25 on the rotating rod 23 does 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.

[0031] like Figure 1 , Figure 3 , Fig. 9 and Fig.12 As shown, a first mounting groove is formed on one side of the ankle section 53, and a second mounting groove is formed on the side of the first knee sleeve 12 opposite to the ankle section 53, and the first mounting groove and the second mounting groove are used to adapt to the support structure 6; the support structure 6 includes a first connecting plate 611 and a second connecting plate 621 respectively fixedly connected to the first mounting groove and the second mounting groove, and the first mounting groove and the second mounting groove are fixed to the first connecting plate 611 and the second connecting plate 621 of the support 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 first display frame 61 and the second display frame 62 have the same shape and structure as the second display frame 62. Both ends of the first display frame 61 and the second display frame 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 needle structure 64. The fracture site of the patient is repositioned and fixed by a plurality of fixing needle structures 64. A plurality of annular frame structures 65 can be installed according to specific circumstances. The annular frame structure 65 provides an installation position for the fixing needle structure 64, and the position of the annular frame structure 65 can be adjusted on the threaded rod 63.

[0032] 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, and 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 needle structure 64 is fixedly installed on the annular frame structure 65.

[0033] 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 needles 644 in various directions above the lower leg, so that the fracture site can be fixed in multiple directions, the stress from the fracture site is dispersed, and it is helpful 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 an installation 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 match 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, so as to fix 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. The clamping plate 641 is provided with a through hole 647 adapted to the fixing hole 655. 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 penetrating steel needle hole 643 is opened on the steel needle plate 642, and 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 opened on one side of the steel needle plate 642. The steel needle 644 is installed in the steel needle hole 643, and 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.

[0034] 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 choose to 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.

[0035] like Figure 1 , Fig.12 and Fig.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 grooves 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 to 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 by the second clamping block strip 72 and the connecting groove, and the two ankle sections 53 are fixed to the second clamping block 51 by 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 inserted into the clamping block groove 161 on the second clamping block 51.

[0036] 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, and 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 position; 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 clamping strip 32 is inserted into the limiting clamping groove 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 located in the initial position, so the first rotating block 22 and the second rotating block 21 are also in the initial state, and the rotating rod 23 is rotated so that the clamping 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.

[0037] Install the support structure 6, and fix the first connecting plate 611 and the second connecting plate 621 of the support 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, muscle 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-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.

[0038] When the fracture of the patient 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 tooth 25 on the rotating rod 23 does 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.

[0039] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0040] 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 principle of the present invention. These improvements and modifications should also be regarded as 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 mounted on the patient's foot and a knee structure mounted on the 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, wherein the first knee sleeve and the second knee sleeve are respectively fixedly connected to two ends of the knee pad; The foot structure includes a heel section adapted to the patient's heel and an ankle section adapted to 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, and the shape of the calf pad is adapted to the shape of the patient's calf; It also includes a position limiting adjustment structure for limiting the position of the knee pad.

2. The in vitro fixation mechanism for trauma orthopedics according to claim 1, characterized in that: 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 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 with a protective cover plate, and the inner side of the protective cover plate fits 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 plate is used to fix and limit the first knee sleeve and the second knee sleeve while protecting them.

3. The in vitro fixation mechanism for trauma orthopedics according to claim 2, characterized in that: The connecting unit comprises a pair of clamping blocks respectively fixedly connected to the opposite side surfaces of the first sleeve section and the second sleeve section and the opposite side surfaces of the third sleeve section and the fourth sleeve section, 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 limit slots; The inner wall of the protective cover plate is provided with a clamping block embedding groove corresponding to the clamping block, and the first clamping block strips corresponding to the clamping block slot are fixedly connected to the inner wall of the clamping block embedding groove on both sides, and the two ends of the protective cover plate are fixedly connected with limiting strips corresponding to the limiting slot.

4. The in vitro fixation mechanism for trauma orthopedics according to claim 2, characterized in that: The position limiting adjustment structure comprises 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 adjusting unit for adjusting the second rotating block and the first rotating block.

5. The in vitro fixation mechanism for trauma orthopedics according to claim 4, characterized in that: The adjusting unit comprises a gear plate fixedly connected to the rotating shaft of the second rotating block; Both ends of the first rotating block are rotatably connected with 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.

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

7. The in vitro fixation mechanism for trauma orthopedics according to claim 1, characterized in that: 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 support structure includes a first connecting plate and a second connecting plate fixedly connected to the first mounting groove and the second mounting groove 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, and the first display frame and the second display frame have the same shape and structure, and both ends of the first display frame and the second display frame are fixedly connected to threaded rods, and the two threaded rods are connected to an annular frame structure, and the annular frame structure is connected to a fixing pin structure.

8. The in vitro fixation mechanism for trauma orthopedics according to claim 7, characterized in that: 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 sliding sleeve and the threaded rod are fixedly connected by screw rings on both sides of the sliding sleeve.

9. The in vitro fixation mechanism for trauma orthopedics according to claim 8, characterized in that: 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 matched with the fixing hole, a steel needle plate is fixedly connected to the top of the clamping plate, a penetrating 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 is fixedly connected to the steel needle plate by the fastening bolt.

10. The extracorporeal fixation mechanism for trauma orthopedics according to claim 1, characterized in that: The ankle section is provided with a butt joint, the ankle section is fixedly connected with second clamping blocks on both sides close to the butt joint, the second clamping blocks are provided with connecting slots on both sides, and the second clamping blocks are connected with a fastening unit; The fastening unit comprises a fastening block sleeved on the second clamping block, the inner wall of the fastening block is fixedly connected with second clamping block strips on both sides, and the fastening block and the second clamping block are fixedly connected by the second clamping block strip and the connecting slot.

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