CN109171915B - Thighbone and shin bone combination fixer - Google Patents
Thighbone and shin bone combination fixer Download PDFInfo
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- CN109171915B CN109171915B CN201810989665.8A CN201810989665A CN109171915B CN 109171915 B CN109171915 B CN 109171915B CN 201810989665 A CN201810989665 A CN 201810989665A CN 109171915 B CN109171915 B CN 109171915B
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- femur
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- traction needle
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like for external osteosynthesis, e.g. distractors, contractors
- A61B17/62—Ring frames, i.e. devices extending around the bones to be positioned
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like for external osteosynthesis, e.g. distractors, contractors
- A61B17/64—Devices extending alongside the bones to be positioned
- A61B17/645—Devices extending alongside the bones to be positioned comprising a framework
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
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Abstract
The invention discloses a femur and tibia combined fixator, which comprises a femur fixing support, a tibia fixing support and a joint moving mechanism, and is characterized in that: the femur traction needle fixer comprises a femur traction needle clamp seat, a first bolt and a first positioning inserting plate, wherein a first deformation groove is formed in the inner wall of a femur traction needle clamp hole of the femur traction needle clamp seat; the outer wall of the femoral traction needle is provided with a first positioning groove, the first positioning plug board is positioned in the first deformation groove and is in matched insertion with the first positioning groove, or/and the tibial traction needle fixer comprises a tibial traction needle holder, a second bolt and a second positioning plug board, the inner wall of the tibial traction needle holder hole of the tibial traction needle holder is provided with a second deformation groove, the outer wall of the tibial traction needle is provided with a second positioning groove, and the second positioning plug board is positioned in the second deformation groove and is in matched insertion with the second positioning groove. The invention can solve the problems of axial displacement or rotational looseness and the like of the femoral traction needle and the tibial traction needle in the prior art.
Description
Technical Field
The invention belongs to the technical field of orthopedic fixators, and particularly relates to a combined fixator for a femur and a tibia.
Background
Joint fractures are the most common bone injuries in daily life, and particularly, the bone fractures are in an increasing trend along with the development of the transportation industry and the construction industry. Therefore, the femur and tibia of the knee joint have displaced fractures, and surgical reduction fixation is necessary. How to fix the four limbs fracture more simply and more firmly and how to reduce the influence on the blood supply at the fracture part as much as possible so as to promote the fracture healing is always the key point and the difficulty of the attention of orthopedics doctors.
The prior knee joint flexion contracture orthosis is disclosed, wherein a femur fixing support and a tibia fixing support are respectively sleeved on a femur and a tibia, a femur traction needle and a tibia traction needle are respectively penetrated on the femur and the tibia during use, and the femur traction needle and the tibia traction needle are respectively and fixedly arranged on the femur fixing support and the tibia fixing support so as to realize the fixation and constraint of the femur and the tibia, and the knee joint flexion contracture orthosis is very suitable for external fixation when the femur and the tibia have fracture simultaneously, and is simple to operate.
However, because the femoral traction needle and the tibial traction needle are slender polished rods and have low friction coefficients, the fixation effect of the traction needle (the femoral traction needle or the tibial traction needle) is not ideal, the traction needle can axially displace or rotate to loosen, and the traction needle can drive the thighbone and the tibia to loosen, and the problems of needle breakage, displacement, local soft tissue stimulation and the like are caused.
To illustrate the problems of the prior art, refer to fig. 1, which shows a conventional way for fixing a traction needle on a femur fixing bracket (N-1) (or a tibia fixing bracket or an orthopedic fixator, etc.), wherein the traction needle (N-2) is inserted into the femur fixing bracket (N-1), and a tightening bolt (N-3) which can be screwed into the femur fixing bracket (N-1) and tightly press the outer wall of the traction needle (N-2) is installed on the femur fixing bracket (N-1). Because the traction needle (N-2) is a slender polished rod, after the traction needle (N-2) is tightly pressed and fixed, the traction needle (N-2) has the risk of being very easy to rotate along the V direction (or the reverse direction) or axially displace along the F direction (or the reverse direction) under the action of external force.
Disclosure of Invention
In view of one or more of the above-mentioned drawbacks of the prior art, the present invention provides a combined femoral and tibial fixation device, which can solve the problem of axial displacement or rotational loosening of a femoral traction pin and/or a tibial traction pin in the prior art.
In order to achieve the aim, the invention provides a combined fixer for femur and tibia, which comprises a femur fixing bracket (1) and a tibia fixing bracket (2); the femur fixing support (1) is connected with the tibia fixing support (2) through a joint moving mechanism (3); the femur fixing support (1) comprises an upper femur lantern ring (1-1), a lower femur lantern ring (1-2) and a first connecting rod (1-3), two ends of the first connecting rod (1-3) are fixedly connected with the upper femur lantern ring (1-1) and the lower femur lantern ring (1-2) respectively, and femur traction needle holders (1-5) for fixing femur traction needles (1-4) are arranged on the upper femur lantern ring (1-1) and the lower femur lantern ring (1-2); the tibia fixing support (2) comprises an upper tibia sleeve ring (2-1), a lower tibia sleeve ring (2-2) and a second connecting rod (2-3), two ends of the second connecting rod (2-3) are fixedly connected with the upper tibia sleeve ring (2-1) and the lower tibia sleeve ring (2-2) respectively, and tibia traction needle fixing devices (2-5) for fixing tibia traction needles (2-4) are arranged on the upper tibia sleeve ring (2-1) and the lower tibia sleeve ring (2-2); the method is characterized in that: the femur traction needle fixer (1-5) comprises a femur traction needle holder (1-51), a first bolt (1-52) and a first positioning inserting plate (1-53), a femur lantern ring connecting part (1-511) and a femur traction needle holder hole (1-512) are arranged on the femur traction needle holder (1-51), a first deformation groove (1-513) which penetrates through the femur traction needle holder (1-51) outwards along the radial direction is arranged on the inner wall of the femur traction needle holder hole (1-512), the femur traction needle (1-4) penetrates through the femur traction needle holder hole (1-512), a first positioning groove (1-41) is arranged on the outer wall of the femur traction needle (1-4), and the first positioning groove (1-41) corresponds to the first deformation groove (1-513), the first positioning inserting plate (1-53) is positioned in the first deformation groove (1-513) and is in matched insertion connection with the first positioning groove (1-41), and the first bolt (1-52) is used for fixing the first positioning inserting plate (1-53) in the first deformation groove (1-513);
or/and the tibia traction needle fixer (2-5) comprises a tibia traction needle holder (2-51), a second bolt (2-52) and a second positioning inserting plate (2-53), the tibia traction needle holder (2-51) is provided with a tibia sleeve ring connecting part (2-511) and a tibia traction needle holder hole (2-512), the inner wall of the tibia traction needle holder hole (2-512) is provided with a second deformation groove (2-513) which penetrates through the tibia traction needle holder (2-51) outwards along the radial direction, the tibia traction needle (2-4) is arranged in the tibia traction needle holder hole (2-512) in a penetrating way, the outer wall of the tibia traction needle (2-4) is provided with a second positioning groove (2-41), and the second positioning groove (2-41) corresponds to the second deformation groove (2-513), the second positioning insertion plate (2-53) is positioned in the second deformation groove (2-513) and is in matched insertion connection with the second positioning groove (2-41), and the second bolt (2-52) is used for fixing the second positioning insertion plate (2-53) in the second deformation groove (2-513).
By adopting the scheme, the femoral traction needle fixer (1-5) is used for fixing the femoral traction needle (1-4), the femoral traction needle (1-4) penetrates through the femoral traction needle clamp hole (1-512) during fixing, when the first positioning groove (1-41) corresponds to the first deformation groove (1-513), the first positioning insertion plate (1-53) is inserted into the first deformation groove (1-513) and is simultaneously matched and inserted with the first positioning groove (1-41), and the first bolt (1-52) is used for fixing the first positioning insertion plate (1-53) in the first deformation groove (1-513). Firstly, as the first positioning inserting plate (1-53) is matched and spliced with the first positioning groove (1-41) on the femoral traction needle (1-4), the first positioning inserting plate (1-53) can limit the femoral traction needle (1-4) to axially displace in the femoral traction needle clamp hole (1-512) similar to the flat key working principle; secondly, as the first positioning inserting plate (1-53) is partially positioned in the first deformation groove (1-513), and meanwhile, the first positioning inserting plate (1-53) is partially positioned in the first positioning groove (1-41) on the femoral traction needle (1-4), the femoral traction needle (1-4) is limited to rotate in the femoral traction needle clamp hole (1-512) due to the rigid action of the first positioning inserting plate (1-53), and thirdly, under the normal state that the first bolt (1-52) is loosened, the femoral traction needle clamp hole (1-512) is not subjected to external force, the first deformation groove (1-513) is reset to the normal groove width, and the femoral traction needle clamp hole (1-512) can be penetrated by the femoral traction needle (1-4) in a clearance manner, so that the installation is convenient; when the first bolt (1-52) is used for fixedly locking the first positioning insertion plate (1-53), the groove width of the first deformation groove (1-513) is reduced and the first positioning insertion plate (1-53) positioned in the first deformation groove is clamped, meanwhile, the femoral traction needle clamp hole (1-512) is reduced to clamp the femoral traction needle (1-4), and therefore the femoral traction needle (1-4) and the femoral traction needle clamp hole (1-512) can be prevented from having a loose gap and the loose gap exists between the first deformation groove (1-513) and the first positioning insertion plate (1-53).
In addition, by adopting the scheme, the tibia traction needle fixer (2-5) is used for fixing the tibia traction needle (2-4), the tibia traction needle (2-4) penetrates through the tibia traction needle clamp hole (2-512) during fixing, when the second positioning groove (2-41) corresponds to the second deformation groove (2-513), the second positioning inserting plate (2-53) is inserted into the second deformation groove (2-513) and is matched and inserted with the second positioning groove (2-41), and the second bolt (2-52) is used for fixing the second positioning inserting plate (2-53) in the second deformation groove (2-513). Firstly, as the second positioning inserting plate (2-53) is matched and inserted with the second positioning groove (2-41) on the tibia traction needle (2-4), the second positioning inserting plate (2-53) can limit the tibia traction needle (2-4) to axially displace in the tibia traction needle clamp hole (2-512) similar to the flat key working principle; secondly, as the second positioning inserting plate (2-53) is partially positioned in the second deformation groove (2-513), and the second positioning inserting plate (2-53) is partially positioned in the second positioning groove (2-41) on the tibia traction needle (2-4), the second positioning inserting plate (2-53) acts rigidly to limit the rotation of the tibia traction needle (2-4); thirdly, under the normal state that the second bolt (2-52) is loosened, the second deformation groove (2-513) is reset to the normal groove width because the second bolt (2-512) is not subjected to external force, and the tibial traction needle clamp hole (2-512) can be penetrated by the clearance of the tibial traction needle (2-4) at the moment, so that the installation is convenient; when the second bolt (2-52) is used for fixedly locking the second positioning insertion plate (2-53), the groove width of the second deformation groove (2-513) is reduced and the second positioning insertion plate (2-53) positioned in the second deformation groove is clamped, meanwhile, the shin traction pin clamp hole (2-512) is reduced to clamp the shin traction pin (2-4), and therefore, the shin traction pin (2-4) and the shin traction pin clamp hole (2-512) can be prevented from having loose gaps and the second deformation groove (2-513) and the second positioning insertion plate (2-53) can be prevented from having loose gaps.
Further, the femur lantern ring connecting part (1-511) is a first screw part, and the femur lantern ring connecting part (1-511) is arranged on the femur upper lantern ring (1-1) or the femur lower lantern ring (1-2) in a penetrating way and is locked by two first nuts (1-54) in a matching way; therefore, the fixing positions of the femur lantern ring connecting part (1-511) and the femur upper lantern ring (1-1) or the femur lower lantern ring (1-2) can be correspondingly adjusted according to the clamping positions of the two first nuts (1-54), and the problem of interference caused by the fact that the heights of the femur traction needles (1-4) fixed on the femur traction needle fixing devices (1-5) at different positions on the femur upper lantern ring (1-1) or the femur lower lantern ring (1-2) are completely consistent can be avoided.
Or/and the tibia lantern ring connecting part (2-511) is a second screw part, and the tibia lantern ring connecting part (2-511) penetrates through the tibia upper lantern ring (2-1) or the tibia lower lantern ring (2-2) and is locked through the matching of two second nuts (2-54). Therefore, the fixed positions of the tibia sleeve ring connecting part (2-511) and the tibia upper sleeve ring (2-1) or the tibia lower sleeve ring (2-2) can be correspondingly adjusted according to the clamping positions of the two second nuts (2-54), and further the problem of interference caused by the fact that the heights of tibia traction needles (2-4) fixed on different tibia traction needle fixing devices (2-5) at different positions on the tibia upper sleeve ring (2-1) or the tibia lower sleeve ring (2-2) are completely consistent can be avoided.
Furthermore, a first through hole (1-514) vertically penetrating through the first deformation groove (1-513) is formed in the femoral traction needle holder (1-51), a second through hole (1-531) is formed in the first positioning insertion plate (1-53), and the screw end of the first bolt (1-52) penetrates through the first through hole (1-514) and the second through hole (1-531) and then is connected with a third nut (1-55) in a matched mode; after the first positioning insertion plate (1-53) is fixedly locked by the first bolt (1-52), the first positioning insertion plate (1-53) is positioned by the first bolt (1-52) in a penetrating way without displacement and looseness, and the first positioning insertion plate (1-53) can further ensure that the axial displacement and the circumferential rotation of the femoral traction needle (1-4) are limited.
Or/and a third through hole (2-514) which vertically penetrates through the second deformation groove (2-513) is arranged on the tibial traction needle clamp seat (2-51), a fourth through hole (2-531) is arranged on the second positioning insertion plate (2-53), and the screw end of the second bolt (2-52) penetrates through the third through hole (2-514) and the fourth through hole (2-531) and then is connected with a fourth nut (2-55) in a matching way. After the second positioning inserting plate (2-53) is fixedly locked by the second bolt (2-52), the second positioning inserting plate (2-53) is positioned by the second bolt (2-52) in a penetrating way without displacement and looseness, and the second positioning inserting plate (2-53) can further ensure that the axial displacement and the circumferential rotation of the tibial traction needle (2-4) are limited.
Furthermore, an even number of femur traction needle fixing devices (1-5) are respectively arranged on the femur upper lantern ring (1-1) and the femur lower lantern ring (1-2), and two ends of the femur traction needle (1-4) are symmetrically fixed through the two femur traction needle fixing devices (1-5) respectively; the two ends of the femoral traction needle (1-4) are symmetrically fixed through the two femoral traction needle fixing devices (1-5), the two ends of the femoral traction needle (1-4) are symmetrical and stressed in a balanced manner, the axial looseness and the rotational looseness of the femoral traction needle (1-4) can be limited in a double mode, and the use safety is improved in a double mode.
Or/and the tibia upper lantern ring (2-1) and the tibia lower lantern ring (2-2) are both provided with an even number of tibia traction needle fixing devices (2-5), and the two ends of the tibia traction needles (2-4) are symmetrically fixed through the two tibia traction needle fixing devices (2-5). The two ends of the tibia traction needle (2-4) are symmetrically fixed through the two tibia traction needle fixing devices (2-5), the two ends of the tibia traction needle (2-4) are symmetrical and stressed in a balanced mode, axial looseness and rotational looseness of the femur traction needle (1-4) can be limited doubly, and use safety is improved exponentially.
Furthermore, the joint moving mechanism (3) comprises a lower joint rod (3-1) and an upper joint rod (3-2), the lower end of the lower joint rod (3-1) is fixedly connected with the upper tibia lantern ring (2-1), the upper end of the lower joint rod (3-1) is hinged with the lower end of the upper joint rod (3-2), and the upper end of the upper joint rod (3-2) is fixedly connected with the lower femur lantern ring (1-2). When joint motion between this thighbone and the shin bone, can do corresponding joint motion through this joint activity mechanism (3) between this thighbone fixed bolster (1) and shin bone fixed bolster (2), can realize the self-adaptation, do benefit to the patient later stage simultaneously and carry out the recovered training of motility.
Further, a bone nail fixer (4) is fixedly arranged on the femur fixing support (1) or/and the tibia fixing support (2). Therefore, the bone nail fixing device is not limited to fixing traction needles at two ends of the femur or the tibia, and can be matched with the bone nail fixer (4) to nail different positions of the femur or the tibia, so that the fracture position of the femur or the tibia can be better reset.
Furthermore, the bone nail fixer (4) comprises a supporting beam (4-1), two arc-shaped rings (4-2) and a plurality of bone nail fixing devices (4-3); the supporting beam (4-1) is provided with a plurality of first mounting holes (4-11) along the length direction, the two arc-shaped rings (4-2) are arranged at intervals and fixedly mounted on the two first mounting holes (4-11) respectively, the arc-shaped rings (4-2) are provided with a plurality of second mounting holes (4-21) distributed in an arc shape, the bone nail fixing device (4-3) is fixedly mounted on the first mounting holes (4-11) or the second mounting holes (4-21), and the bone nail fixing device (4-3) is used for fixing bone nails (4-4). When the bone nail fixer (4) is assembled on the femur fixing support (1) (or the tibia fixing support (2)), the corbel (4-1) can be parallel to the first connecting rod (1-3), and the arc ring is concentric with the upper femur sleeve ring (1-1) or the lower femur sleeve ring (1-2). When in use, firstly, the bone nail fixing device (4-3) can be arranged on any one first mounting hole (4-11) on the corbel (4-1), and the position of the bone nail can be adjusted in height so as to meet the requirement of nailing the bone nails at different height positions of the femur; secondly, as the bone nail fixing devices (4-3) can be respectively arranged on different first mounting holes (4-11) on the supporting beam (4-1), a plurality of bone nails can be arranged on the supporting beam (4-1), and the requirement of drilling a plurality of bone nails at different height positions of the femur can be met according to the condition of a patient; thirdly, as the arc-shaped ring (4-2) is provided with a plurality of second mounting holes (4-21) distributed in an arc shape, the bone nail fixing device (4-3) can be mounted on any second mounting hole (4-21) on the arc-shaped ring (4-2), the bone nail fixing device (4-3) can be adjusted along the arc-shaped position of the arc-shaped ring (4-2) to meet the requirement of nailing at different positions of the circumference of the femur, and fourthly, as the bone nail fixing devices (4-3) can be respectively mounted on different second mounting holes (4-21) on the arc-shaped ring (4-2), a plurality of bone nails can be mounted on the arc-shaped ring (4-2), so as to meet the requirement of nailing at different circumferential positions of the same height of the femur according to the condition of a patient, and simultaneously the included angles between the bone nails on the supporting beam (4-1) and the bone nails on the arc-shaped ring (4-2) can be adjusted, the universality is good, the fixing requirements of different types are met, and meanwhile, the installation is convenient and the mutual noninterference is realized.
Furthermore, the bone nail fixing device (4-3) comprises a bone nail mounting seat (4-31), a fifth nut (4-32) and a sixth nut (4-33), the bone nail mounting seat (4-31) is provided with a third screw rod part (4-311) and a second connecting part (4-312), the third screw rod part (4-311) penetrates through the first mounting hole (4-11) or the second mounting hole (4-21) and then is matched and locked with the fifth nut (4-32), the outer end of the bone nail (4-4) is provided with a fourth screw rod part (4-41), and the fourth screw rod part (4-41) penetrates through the second connecting part (4-312) and is matched and locked through the two sixth nuts (4-33). The bone nail (4-4) is tightly fastened on the second connecting part (4-312) through two sixth nuts (4-33), and the bone nail (4-4) is firm and reliable and is not easy to loosen and rotate.
Further, the bone nail fixator (4) further comprises an adjusting beam (4-5); the adjusting beam (4-5) and the supporting beam (4-1) are arranged in parallel, a plurality of third mounting holes (4-51) are formed in the adjusting beam (4-5) along the length direction of the adjusting beam, one end of the adjusting beam (4-5) is fixedly arranged on the second mounting holes (4-21) of the arc-shaped ring (4-2), and the third mounting holes (4-51) are used for mounting the bone nail fixing devices (4-3). The adjusting beam (4-5) can be fixed on any second mounting hole (4-21) on the arc-shaped ring (4-2), and one or more bone nails in the length direction are arranged on the adjusting beam (4-5) at different positions on the circumference of the femur or the tibia so as to facilitate intramedullary nail fixing of the femur or the tibia.
Preferably, the upper femur sleeve ring (1-1), the lower femur sleeve ring (1-2), the upper tibia sleeve ring (2-1) and the lower tibia sleeve ring (2-2) are formed by detachably fixing and assembling two half sleeve rings (a).
Drawings
Fig. 1 is a perspective view of a conventional traction needle fixed to a femoral fixing bracket.
Fig. 2 is a front view of the first embodiment of the present invention.
Fig. 3 is a perspective view of a first embodiment of the present invention.
Fig. 4 is a perspective view of a femoral fixation support.
Fig. 5 is an enlarged view at a in fig. 4.
Fig. 6 is a view of the femoral distraction needle holder in a modified state during the assembly process.
Fig. 7 is a perspective view of a tibial fixation tray.
Fig. 8 is an enlarged view at a in fig. 4.
Fig. 9 is a view of the tibial traction pin holder in an altered state during the assembly process.
Fig. 10 is a perspective view of a second embodiment of the present invention.
Fig. 11 is a perspective view of a bone screw holder.
Fig. 12 is a perspective view of the present invention in another embodiment.
Fig. 13 is a perspective view of the present invention in yet another embodiment.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
the first embodiment is as follows: see fig. 2-9: a femur and tibia combination fixator comprises a femur fixing support (1) and a tibia fixing support (2); the femur fixing support (1) is connected with the tibia fixing support (2) through a joint moving mechanism (3).
The femur fixing support 1 comprises an upper femur lantern ring 1-1, a lower femur lantern ring 1-2 and a first connecting rod 1-3, two ends of the first connecting rod 1-3 are respectively fixedly connected with the upper femur lantern ring 1-1 and the lower femur lantern ring 1-2, and the upper femur lantern ring 1-1 and the lower femur lantern ring 1-2 are respectively provided with a femur traction needle fixer 1-5 for fixing a femur traction needle 1-4.
Preferably, the two ends of the first connecting rod 1-3 are respectively and adjustably fixedly connected with the upper femur sleeve 1-1 and the lower femur sleeve 1-2, so that the distance between the upper femur sleeve 1-1 and the lower femur sleeve 1-2 can be adjusted, and the first connecting rod is suitable for fixing different bone types. In this embodiment, the first connecting rods 1-3 are circumferentially distributed in three and triangular shapes, so that the femur fixing bracket 1 is firm and reliable and is not easy to deform.
The femur traction needle fixer 1-5 comprises a femur traction needle holder 1-51, a first bolt 1-52 and a first positioning inserting plate 1-53, wherein the femur traction needle holder 1-51 is provided with a femur lantern ring connecting part 1-511 and a femur traction needle holder hole 1-512, and the femur lantern ring connecting part 1-511 is fixedly connected with a femur upper lantern ring 1-1 or a femur lower lantern ring 1-2; the inner wall of the femoral traction needle clamp hole 1-512 is provided with a first deformation groove 1-513 which penetrates through the femoral traction needle clamp seat 1-51 outwards along the radial direction, the femoral traction needle 1-4 penetrates through the femoral traction needle clamp hole 1-512, the outer wall of the femoral traction needle 1-4 is provided with a first positioning groove 1-41, the first positioning groove 1-41 corresponds to the first deformation groove 1-513, the first positioning plug board 1-53 is positioned in the first deformation groove 1-513 and is in matched insertion connection with the first positioning groove 1-41, and the first bolt 1-52 is used for fixing the first positioning plug board 1-53 in the first deformation groove 1-513. The femur traction needle fixer 1-5 is used for fixing a femur traction needle 1-4, the femur traction needle 1-4 penetrates through the femur traction needle clamp hole 1-512 during fixing, after the first positioning groove 1-41 corresponds to the first deformation groove 1-513, the first positioning insertion plate 1-53 is inserted into the first deformation groove 1-513 and is matched and inserted with the first positioning groove 1-41 at the same time, and the first bolt 1-52 is used for fixing the first positioning insertion plate 1-53 in the first deformation groove 1-513. Firstly, as the first positioning inserting plates 1-53 are matched and spliced with the first positioning grooves 1-41 on the femoral traction needles 1-4, similar to the flat key working principle, the first positioning inserting plates 1-53 can limit the femoral traction needles 1-4 to axially move in the femoral traction needle clamp holes 1-512; secondly, as the first positioning inserting plate 1-53 is partially positioned in the first deformation groove 1-513, and the first positioning inserting plate 1-53 is partially positioned in the first positioning groove 1-41 on the femoral traction needle 1-4, the rotation of the femoral traction needle 1-4 is limited by the rigid action of the first positioning inserting plate 1-53, and thirdly, under the normal state that the first bolt 1-52 is loosened, the femoral traction needle clamp hole 1-512 is not subjected to external force, the first deformation groove 1-513 is reset to the normal groove width, and at the moment, the femoral traction needle clamp hole 1-512 can be penetrated through the femoral traction needle 1-4 in a clearance way, so that the installation is convenient; when the first bolt 1-52 is used for fixedly locking the first positioning insertion plate 1-53, the width of the first deformation groove 1-513 is reduced and the first positioning insertion plate 1-53 positioned in the first deformation groove is clamped, meanwhile, the femoral traction needle clamp hole 1-512 is reduced and the femoral traction needle 1-4 is clamped, so that the loose gap between the femoral traction needle 1-4 and the femoral traction needle clamp hole 1-512 and the loose gap between the first deformation groove 1-513 and the first positioning insertion plate 1-53 can be prevented.
Further, the femur lantern ring connecting part 1-511 is a first screw part, and the femur lantern ring connecting part 1-511 (i.e. the first screw part) is arranged on the femur upper lantern ring 1-1 or the femur lower lantern ring 1-2 in a penetrating way and is locked by two first nuts 1-54 in a matching way. Thus, when secured, the two first nuts 1-54 clamp against the upper femoral collar 1-1 or the lower femoral collar 1-2. Therefore, the fixing positions of the femur lantern ring connecting part 1-511 and the femur upper lantern ring 1-1 or the femur lower lantern ring 1-2 can be correspondingly adjusted according to the clamping positions of the two first nuts 1-54, and the problem of interference caused by the fact that the heights of the femur traction needles 1-4 fixed on the femur traction needle fixing devices 1-5 at different positions on the femur upper lantern ring 1-1 or the femur lower lantern ring 1-2 are completely consistent can be avoided.
Furthermore, a first through hole 1-514 which vertically penetrates through the first deformation groove 1-513 is formed in the femoral traction needle holder 1-51, a second through hole 1-531 is formed in the first positioning insertion plate 1-53, and the screw end of the first bolt 1-52 penetrates through the first through hole 1-514 and the second through hole 1-531 and then is connected with a third nut 1-55 in a matched mode; after the first positioning insertion plate 1-53 is fixedly locked by the first bolt 1-52, the first positioning insertion plate 1-53 is positioned by the first bolt 1-52 without displacement and looseness, and the first positioning insertion plate 1-53 can further ensure to limit the axial displacement and circumferential rotation of the femoral traction needle 1-4.
The tibia fixing support 2 comprises an upper tibia sleeve ring 2-1, a lower tibia sleeve ring 2-2 and a second connecting rod 2-3, two ends of the second connecting rod 2-3 are fixedly connected with the upper tibia sleeve ring 2-1 and the lower tibia sleeve ring 2-2 respectively, and tibia traction needle fixing devices 2-5 for fixing tibia traction needles 2-4 are arranged on the upper tibia sleeve ring 2-1 and the lower tibia sleeve ring 2-2 respectively. Preferably, two ends of the second connecting rod 2-3 are respectively and adjustably fixedly connected with the upper tibia sleeve ring 2-1 and the lower tibia sleeve ring 2-2, so that the distance between the upper tibia sleeve ring 2-1 and the lower tibia sleeve ring 2-2 can be adjusted, and the fixing device is suitable for fixing different bone types. In this embodiment, the second connecting rods 2-3 are three and distributed circumferentially in a triangular shape, so that the tibial fixing bracket 2 is firm and reliable and is not easy to deform.
The tibia traction needle fixer 2-5 comprises a tibia traction needle holder 2-51, a second bolt 2-52 and a second positioning inserting plate 2-53, wherein the tibia traction needle holder 2-51 is provided with a tibia sleeve ring connecting part 2-511 and a tibia traction needle holder hole 2-512, and the tibia sleeve ring connecting part 2-511 is fixedly connected with an upper tibia sleeve ring 2-1 or a lower tibia sleeve ring 2-2; the inner wall of the shin traction needle clamp hole 2-512 is provided with a second deformation groove 2-513 which penetrates through the shin traction needle clamp seat 2-51 outwards along the radial direction, the shin traction needle 2-4 penetrates through the shin traction needle clamp hole 2-512, the outer wall of the shin traction needle 2-4 is provided with a second positioning groove 2-41, the second positioning groove 2-41 corresponds to the second deformation groove 2-513, the second positioning insertion plate 2-53 is positioned in the second deformation groove 2-513 and is in matched insertion with the second positioning groove 2-41, and the second bolt 2-52 is used for fixing the second positioning insertion plate 2-53 in the second deformation groove 2-513. The tibia traction needle fixer 2-5 is used for fixing a tibia traction needle 2-4, the tibia traction needle 2-4 penetrates through the tibia traction needle clamp hole 2-512 during fixing, when the second positioning groove 2-41 corresponds to the second deformation groove 2-513, the second positioning insertion plate 2-53 is inserted into the second deformation groove 2-513 and is matched and inserted with the second positioning groove 2-41 at the same time, and the second bolt 2-52 is used for fixing the second positioning insertion plate 2-53 in the second deformation groove 2-513. Firstly, as the second positioning inserting plate 2-53 is matched and inserted with the second positioning groove 2-41 on the tibia traction needle 2-4, similar to the flat key working principle, the second positioning inserting plate 2-53 can limit the tibia traction needle 2-4 to axially displace in the tibia traction needle clamp hole 2-512; secondly, since the second positioning insert plate 2-53 is partially positioned in the second deformation groove 2-513 and the second positioning insert plate 2-53 is partially positioned in the second positioning groove 2-41 of the tibial traction needle 2-4, the second positioning insert plate 2-53 acts rigidly to limit the rotation of the tibial traction needle 2-4; thirdly, under the normal state that the second bolt 2-52 is loosened, the second deformation groove 2-513 is reset to the normal groove width because the second deformation groove 2-512 is not applied with external force, and the tibial traction needle clamp hole 2-512 can be penetrated by the clearance of the tibial traction needle 2-4, thereby being convenient for installation.
When the second bolt 2-52 is used for fixedly locking the second positioning insertion plate 2-53, the groove width of the second deformation groove 2-513 is reduced and the second positioning insertion plate 2-53 positioned in the second deformation groove is clamped, meanwhile, the tibial traction pin clamp hole 2-512 is reduced to clamp the tibial traction pin 2-4, and the loose clearance between the tibial traction pin 2-4 and the tibial traction pin clamp hole 2-512 and the loose clearance between the second deformation groove 2-513 and the second positioning insertion plate 2-53 can be simultaneously prevented.
Further, the tibia sleeve ring connecting part 2-511 is a second screw part, and the tibia sleeve ring connecting part 2-511 (namely, the second screw part) is arranged on the tibia upper sleeve ring 2-1 or the tibia lower sleeve ring 2-2 in a penetrating manner and is locked by two second nuts 2-54 in a matching manner. Therefore, the fixed positions of the tibia sleeve ring connecting part 2-511 and the tibia upper sleeve ring 2-1 or the tibia lower sleeve ring 2-2 can be correspondingly adjusted according to the clamping positions of the two second nuts 2-54, and further the problem of interference caused by the fact that the heights of the tibia traction needles 2-4 fixed on the tibia traction needle fixing devices 2-5 at different positions on the tibia upper sleeve ring 2-1 or the tibia lower sleeve ring 2-2 are completely consistent can be avoided.
Furthermore, a third through hole 2-514 which vertically penetrates through the second deformation groove 2-513 is formed in the tibial traction needle clamp seat 2-51, a fourth through hole 2-531 is formed in the second positioning insertion plate 2-53, and the screw end of the second bolt 2-52 penetrates through the third through hole 2-514 and the fourth through hole 2-531 and then is connected with a fourth nut 2-55 in a matched mode. After the second positioning insertion plate 2-53 is fixedly locked by the second bolt 2-52, the second positioning insertion plate 2-53 is positioned by the second bolt 2-52 without displacement and looseness, so that the second positioning insertion plate 2-53 can further ensure that the axial displacement and the circumferential rotation of the tibial traction needle 2-4 are limited by the second positioning insertion plate 2-53.
Furthermore, an even number of femur traction needle fixing devices 1-5 are respectively arranged on the femur upper lantern ring 1-1 and the femur lower lantern ring 1-2, and two ends of the femur traction needle 1-4 are symmetrically fixed through the two femur traction needle fixing devices 1-5 respectively; two ends of the femoral traction needle 1-4 are symmetrically fixed through two femoral traction needle fixing devices 1-5, and two ends of the femoral traction needle 1-4 are symmetrical and are stressed in a balanced manner, so that the femoral traction needle 1-4 can be limited axially and rotationally, and the use safety is improved exponentially.
In this embodiment, 4 femoral traction needle fixing devices 1-5 are respectively arranged on the upper femoral sleeve ring 1-1 and the lower femoral sleeve ring 1-2, and 2 femoral traction needle fixing devices 1-5 can be respectively fixed on the upper femoral sleeve ring 1-1 and the lower femoral sleeve ring 1-2. Preferably, the 2 femoral traction needle holders 1-5 are distributed crosswise.
Furthermore, an even number of tibia traction needle fixing devices 2-5 are arranged on the tibia upper lantern ring 2-1 and the tibia lower lantern ring 2-2, and two ends of the tibia traction needles 2-4 are symmetrically fixed through the two tibia traction needle fixing devices 2-5 respectively. Two ends of the tibia traction needle 2-4 are symmetrically fixed through two tibia traction needle fixing devices 2-5, two ends of the tibia traction needle 2-4 are symmetrical and stressed in a balanced manner, axial looseness and rotational looseness of the femur traction needle 1-4 can be limited doubly, and use safety is improved exponentially.
In this embodiment, 4 tibial traction needle holders 2-5 are respectively disposed on the upper tibial collar 2-1 and the lower tibial collar 2-2, and 2 tibial traction needles 2-4 are respectively fixed on the upper tibial collar 2-1 and the lower tibial collar 2-2. Preferably, the 2 tibial traction pins 2-4 are distributed crosswise.
Further, the joint moving mechanism 3 comprises a lower joint rod 3-1 and an upper joint rod 3-2, the lower end of the lower joint rod 3-1 is fixedly connected with the upper sleeve ring 2-1 of the tibia, the upper end of the lower joint rod 3-1 is hinged with the lower end of the upper joint rod 3-2, and the upper end of the upper joint rod 3-2 is fixedly connected with the lower sleeve ring 1-2 of the femur. When joint motion between this thighbone and the shin bone, can do corresponding joint motion through this joint moving mechanism 3 between this thighbone fixed bolster 1 and the shin bone fixed bolster 2, can realize the self-adaptation, do benefit to the patient later stage simultaneously and carry out the recovered training of motility.
Example two: this embodiment is substantially the same as the first embodiment, except that:
referring to fig. 10 to 11, a bone screw fixer 4 is fixedly mounted on the femur fixing bracket 1 or/and the tibia fixing bracket 2. Therefore, the bone nail fixing device is not limited to fixing traction needles at two ends of the femur or the tibia, and can be matched with the bone nail fixer 4 to pin different positions of the femur or the tibia, so that the fracture position of the femur or the tibia can be better reset.
In the present embodiment, referring to fig. 11, the bone nail fixer 4 comprises a strut 4-1, two arc rings 4-2 and a plurality of bone nail fixing devices 4-3; the supporting beam 4-1 is provided with a plurality of first mounting holes 4-11 along the length direction thereof, the two arc-shaped rings 4-2 are arranged at intervals and are respectively and fixedly mounted on the two first mounting holes 4-11, the arc-shaped rings 4-2 are provided with a plurality of second mounting holes 4-21 distributed in an arc shape, the bone nail fixing device 4-3 is fixedly mounted on the first mounting holes 4-11 or the second mounting holes 4-21, and the bone nail fixing device 4-3 is used for fixing the bone nails 4-4. When the bone screw fixator 4 is assembled on the femur fixing support 1 (or the tibia fixing support 2), the strut 4-1 can be parallel to the first connecting rod 1-3, and the arc ring is concentric with the femur upper sleeve 1-1 or the femur lower sleeve 1-2. When in use, firstly, the bone nail fixing device 4-3 can be arranged on any one of the first mounting holes 4-11 on the corbel 4-1, and the position of the bone nail can be adjusted in height so as to meet the requirement of nailing the bone nails at different height positions of the femur; secondly, as the bone nail fixing devices 4-3 can be respectively arranged on different first mounting holes 4-11 on the supporting beam 4-1, a plurality of bone nails can be arranged on the supporting beam 4-1, and the requirement of drilling a plurality of bone nails at different height positions of the femur can be met according to the condition of a patient; thirdly, because the arc-shaped ring 4-2 is provided with a plurality of second mounting holes 4-21 distributed in an arc shape, the bone nail fixing device 4-3 can be arranged on any second mounting hole 4-21 on the arc-shaped ring 4-2, the bone nail fixing device 4-3 can be adjusted along the arc-shaped position of the arc-shaped ring 4-2 so as to meet the requirement of nailing the bone nails at different circumferential positions of the femur, fourthly, because the bone nail fixing devices 4-3 can be respectively arranged on the different second mounting holes 4-21 on the arc-shaped ring 4-2, a plurality of bone nails can be arranged on the arc-shaped ring 4-2 so as to meet the requirement of nailing the bone nails at different circumferential positions of the femur at the same height according to the condition of a patient, and simultaneously, the included angle between the bone nail on the supporting beam 4-1 and the bone nail on the arc-shaped ring 4-2 can be adjusted, the universality is good, the fixing requirements of different types are met, and meanwhile, the installation is convenient and the mutual noninterference is realized.
In addition, the structure and principle of the bone nail fixer 4 are the same as those of the bone nail fixer 2 when the bone nail fixer is assembled on the tibia fixing support 2, so the description is omitted.
Referring to fig. 11, further, the bone screw fixing device 4-3 includes a bone screw mounting seat 4-31, a fifth nut 4-32 and a sixth nut 4-33, the bone screw mounting seat 4-31 is provided with a third screw portion 4-311 and a second connecting portion 4-312, the third screw portion 4-311 passes through the first mounting hole 4-11 or the second mounting hole 4-21 and then is locked with the fifth nut 4-32 in a matching manner, the outer end of the bone screw 4-4 is provided with a fourth screw portion 4-41, and the fourth screw portion 4-41 is inserted through the second connecting portion 4-312 and is locked in a matching manner by two sixth nuts 4-33. The bone nail 4-4 is tightly fixed on the second connecting part 4-312 through two sixth nuts 4-33, and the bone nail 4-4 is firm and reliable and is not easy to loosen and rotate.
Referring to fig. 11, further, the bone nail holder 4 further comprises an adjustment beam 4-5; the adjusting beam 4-5 is arranged in parallel with the supporting beam 4-1, a plurality of third mounting holes 4-51 are formed in the adjusting beam 4-5 along the length direction of the adjusting beam, one end of the adjusting beam 4-5 is fixedly arranged on the second mounting holes 4-21 of the arc-shaped ring 4-2, and the third mounting holes 4-51 are used for mounting the bone nail fixing device 4-3. The adjusting beam 4-5 can be fixed on any one of the second mounting holes 4-21 on the arc-shaped ring 4-2, and one or more bone nails in the length direction are arranged on the adjusting beam 4-5 at different positions on the circumference of the femur or the tibia so as to facilitate the intramedullary nail fixing of the femur or the tibia.
In other embodiments, referring to fig. 12, the upper femoral collar 1-1, the lower femoral collar 1-2, the upper tibial collar 2-1 and the lower tibial collar 2-2 are formed by detachably fixing and assembling two half collars a. The fixing and assembling efficiency of doctors can be improved, and the time is saved.
In other embodiments, see fig. 12, the lower femoral collar 1-2 or/and the upper tibial collar 2-1 may be provided with a notch b to facilitate insertion of the femur and tibia.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. A femur and tibia combination fixator comprises a femur fixing support (1) and a tibia fixing support (2); the femur fixing support (1) is connected with the tibia fixing support (2) through a joint moving mechanism (3); the femur fixing support (1) comprises an upper femur lantern ring (1-1), a lower femur lantern ring (1-2) and a first connecting rod (1-3), two ends of the first connecting rod (1-3) are fixedly connected with the upper femur lantern ring (1-1) and the lower femur lantern ring (1-2) respectively, and femur traction needle holders (1-5) for fixing femur traction needles (1-4) are arranged on the upper femur lantern ring (1-1) and the lower femur lantern ring (1-2); the tibia fixing support (2) comprises an upper tibia sleeve ring (2-1), a lower tibia sleeve ring (2-2) and a second connecting rod (2-3), two ends of the second connecting rod (2-3) are fixedly connected with the upper tibia sleeve ring (2-1) and the lower tibia sleeve ring (2-2) respectively, and tibia traction needle fixing devices (2-5) for fixing tibia traction needles (2-4) are arranged on the upper tibia sleeve ring (2-1) and the lower tibia sleeve ring (2-2); the method is characterized in that:
the femur traction needle fixer (1-5) comprises a femur traction needle holder (1-51), a first bolt (1-52) and a first positioning inserting plate (1-53), a femur lantern ring connecting part (1-511) and a femur traction needle holder hole (1-512) are arranged on the femur traction needle holder (1-51), a first deformation groove (1-513) which penetrates through the femur traction needle holder (1-51) outwards along the radial direction is arranged on the inner wall of the femur traction needle holder hole (1-512), the femur traction needle (1-4) penetrates through the femur traction needle holder hole (1-512), a first positioning groove (1-41) is arranged on the outer wall of the femur traction needle (1-4), and the first positioning groove (1-41) corresponds to the first deformation groove (1-513), the first positioning inserting plate (1-53) is positioned in the first deformation groove (1-513) and is in matched insertion connection with the first positioning groove (1-41), and the first bolt (1-52) is used for fixing the first positioning inserting plate (1-53) in the first deformation groove (1-513);
or/and the tibia traction needle fixer (2-5) comprises a tibia traction needle holder (2-51), a second bolt (2-52) and a second positioning inserting plate (2-53), the tibia traction needle holder (2-51) is provided with a tibia sleeve ring connecting part (2-511) and a tibia traction needle holder hole (2-512), the inner wall of the tibia traction needle holder hole (2-512) is provided with a second deformation groove (2-513) which penetrates through the tibia traction needle holder (2-51) outwards along the radial direction, the tibia traction needle (2-4) is arranged in the tibia traction needle holder hole (2-512) in a penetrating way, the outer wall of the tibia traction needle (2-4) is provided with a second positioning groove (2-41), and the second positioning groove (2-41) corresponds to the second deformation groove (2-513), the second positioning insertion plate (2-53) is positioned in the second deformation groove (2-513) and is in matched insertion connection with the second positioning groove (2-41), and the second bolt (2-52) is used for fixing the second positioning insertion plate (2-53) in the second deformation groove (2-513).
2. A combined femoral and tibial fixation device according to claim 1, in which: the femur lantern ring connecting part (1-511) is a first screw part, and the femur lantern ring connecting part (1-511) is arranged on the femur upper lantern ring (1-1) or the femur lower lantern ring (1-2) in a penetrating way and is locked by two first nuts (1-54) in a matching way;
or/and the tibia lantern ring connecting part (2-511) is a second screw part, and the tibia lantern ring connecting part (2-511) penetrates through the tibia upper lantern ring (2-1) or the tibia lower lantern ring (2-2) and is locked through the matching of two second nuts (2-54).
3. A combined femoral and tibial fixation device according to claim 1 or 2, in which: a first through hole (1-514) vertically penetrating through the first deformation groove (1-513) is formed in the femoral traction needle holder (1-51), a second through hole (1-531) is formed in the first positioning inserting plate (1-53), and the screw end of the first bolt (1-52) penetrates through the first through hole (1-514) and the second through hole (1-531) and then is connected with a third nut (1-55) in a matched mode;
or/and a third through hole (2-514) which vertically penetrates through the second deformation groove (2-513) is arranged on the tibial traction needle clamp seat (2-51), a fourth through hole (2-531) is arranged on the second positioning insertion plate (2-53), and the screw end of the second bolt (2-52) penetrates through the third through hole (2-514) and the fourth through hole (2-531) and then is connected with a fourth nut (2-55) in a matching way.
4. A combined femoral and tibial fixation device according to claim 1, in which: an even number of femur traction needle fixing devices (1-5) are respectively arranged on the femur upper lantern ring (1-1) and the femur lower lantern ring (1-2), and two ends of the femur traction needle (1-4) are symmetrically fixed through the two femur traction needle fixing devices (1-5) respectively;
or/and the tibia upper lantern ring (2-1) and the tibia lower lantern ring (2-2) are both provided with an even number of tibia traction needle fixing devices (2-5), and the two ends of the tibia traction needles (2-4) are symmetrically fixed through the two tibia traction needle fixing devices (2-5).
5. A combined femoral and tibial fixation device according to claim 1, in which: the joint moving mechanism (3) comprises a lower joint rod (3-1) and an upper joint rod (3-2), the lower end of the lower joint rod (3-1) is fixedly connected with an upper tibia lantern ring (2-1), the upper end of the lower joint rod (3-1) is hinged with the lower end of the upper joint rod (3-2), and the upper end of the upper joint rod (3-2) is fixedly connected with a lower femur lantern ring (1-2).
6. A combined femoral and tibial fixation device according to any of claims 1 to 2 or 4 to 5 in which: and a bone nail fixer (4) is fixedly arranged on the femur fixing support (1) or/and the tibia fixing support (2).
7. A combined femoral and tibial fixation device according to claim 6, in which: the bone nail fixer (4) comprises a supporting beam (4-1), two arc-shaped rings (4-2) and a plurality of bone nail fixing devices (4-3); the supporting beam (4-1) is provided with a plurality of first mounting holes (4-11) along the length direction, the two arc-shaped rings (4-2) are arranged at intervals and fixedly mounted on the two first mounting holes (4-11) respectively, the arc-shaped rings (4-2) are provided with a plurality of second mounting holes (4-21) distributed in an arc shape, the bone nail fixing device (4-3) is fixedly mounted on the first mounting holes (4-11) or the second mounting holes (4-21), and the bone nail fixing device (4-3) is used for fixing bone nails (4-4).
8. A combined femoral and tibial fixation device according to claim 7, in which: the bone nail fixing device (4-3) comprises a bone nail mounting seat (4-31), a fifth nut (4-32) and a sixth nut (4-33), the bone nail mounting seat (4-31) is provided with a third screw rod part (4-311) and a second connecting part (4-312), the third screw rod part (4-311) penetrates through the first mounting hole (4-11) or the second mounting hole (4-21) and then is matched and locked with the fifth nut (4-32), the outer end of the bone nail (4-4) is provided with a fourth screw rod part (4-41), and the fourth screw rod part (4-41) penetrates through the second connecting part (4-312) and is matched and locked through the two sixth nuts (4-33).
9. A combined femoral and tibial fixation device according to claim 7 or 8 in which: the bone nail fixer (4) also comprises an adjusting beam (4-5);
the adjusting beam (4-5) and the supporting beam (4-1) are arranged in parallel, a plurality of third mounting holes (4-51) are formed in the adjusting beam (4-5) along the length direction of the adjusting beam, one end of the adjusting beam (4-5) is fixedly arranged on the second mounting holes (4-21) of the arc-shaped ring (4-2), and the third mounting holes (4-51) can be used for mounting the bone nail fixing device (4-3).
10. A combined femoral and tibial fixation device according to claim 1, in which: the upper femur lantern ring (1-1), the lower femur lantern ring (1-2), the upper tibia lantern ring (2-1) and the lower tibia lantern ring (2-2) are formed by detachably fixing and assembling two half lantern rings (a).
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| CN201810989665.8A CN109171915B (en) | 2018-08-28 | 2018-08-28 | Thighbone and shin bone combination fixer |
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| CN201810989665.8A CN109171915B (en) | 2018-08-28 | 2018-08-28 | Thighbone and shin bone combination fixer |
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| CN109171915B true CN109171915B (en) | 2021-01-19 |
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| CN109793562B (en) * | 2019-01-23 | 2020-06-16 | 胡将碟 | Dismantle convenient fracture fixation support frame |
| CN110960304B (en) * | 2020-01-19 | 2024-08-27 | 福州市第二医院（福建省福州中西医结合医院、福州市职业病医院） | Femoral neck fracture reduction device and using method thereof |
| CN113317856A (en) * | 2021-06-21 | 2021-08-31 | 哈尔滨理工大学 | Fracture reduction fixator based on mixed structure |
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| SU517196A1 (en) * | 1974-07-22 | 1977-09-25 | Центральный Ордена Трудового Красного Знамени Научно-Исследовательского Институт Травматологии И Ортопедии | Apparatus for repositioning and fixing bone fragments |
| US5553108A (en) * | 1994-11-03 | 1996-09-03 | General Electric Company | Water rod attachment in a nuclear reactor fuel bundle |
| CN2225849Y (en) * | 1995-05-05 | 1996-05-01 | 王兆年 | Multi-segmented multi-functional external bone fixator |
| CN206350117U (en) * | 2016-12-15 | 2017-07-21 | 叶永韶 | A kind of easily regulation microphone holder |
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