CN118902584B - Nested assembly internal fixation device for the lateral tibial plateau - Google Patents
Nested assembly internal fixation device for the lateral tibial plateau Download PDFInfo
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- CN118902584B CN118902584B CN202411171121.2A CN202411171121A CN118902584B CN 118902584 B CN118902584 B CN 118902584B CN 202411171121 A CN202411171121 A CN 202411171121A CN 118902584 B CN118902584 B CN 118902584B
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- 229910001069 Ti alloy Inorganic materials 0.000 claims abstract description 159
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 155
- 239000010959 steel Substances 0.000 claims abstract description 155
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 65
- 239000004626 polylactic acid Substances 0.000 claims abstract description 65
- 210000002303 tibia Anatomy 0.000 claims abstract description 31
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 16
- 230000000694 effects Effects 0.000 claims description 17
- 238000010521 absorption reaction Methods 0.000 claims description 11
- 238000003825 pressing Methods 0.000 claims description 6
- 238000002513 implantation Methods 0.000 claims description 3
- 206010017076 Fracture Diseases 0.000 description 51
- 208000010392 Bone Fractures Diseases 0.000 description 49
- 230000035876 healing Effects 0.000 description 33
- 239000000463 material Substances 0.000 description 25
- 238000013461 design Methods 0.000 description 13
- 239000007769 metal material Substances 0.000 description 9
- 210000000629 knee joint Anatomy 0.000 description 8
- 230000011164 ossification Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000000956 alloy Substances 0.000 description 4
- 230000001939 inductive effect Effects 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 238000013329 compounding Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000001976 improved effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 210000001519 tissue Anatomy 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 210000005065 subchondral bone plate Anatomy 0.000 description 2
- 230000008093 supporting effect Effects 0.000 description 2
- 206010067484 Adverse reaction Diseases 0.000 description 1
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- 208000005214 Poroma Diseases 0.000 description 1
- 230000006838 adverse reaction Effects 0.000 description 1
- 208000030961 allergic reaction Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 201000001013 eccrine acrospiroma Diseases 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000007306 functionalization reaction Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000008407 joint function Effects 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8061—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates specially adapted for particular bones
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8004—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with means for distracting or compressing the bone or bones
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8052—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded
- A61B17/8057—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded the interlocking form comprising a thread
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- 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 or setting implements
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/809—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with bone-penetrating elements, e.g. blades or prongs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B2017/00004—(bio)absorbable, (bio)resorbable or resorptive
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
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- Medical Informatics (AREA)
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Abstract
本发明公开了一种用于胫骨平台外侧的嵌套组装型内固定装置，包括钛合金钢板、近端可吸收模块和顶压复位锁定可吸收棒，紧贴胫骨外侧骨面的钛合金钢板上设有对应胫骨平台关节面塌陷区域的开窗顶压复位区，在开窗顶压复位区的近端侧设有钢板近端锁定孔、远端侧设有钢板滑动加压孔；在开窗顶压复位区内嵌入安装有近端可吸收模块，近端可吸收模块上的近端模块微动孔内嵌有可吸收聚乳酸环，顶压复位锁定可吸收棒经近端模块微动孔打入胫骨平台关节面塌陷区域且顶压复位锁定可吸收棒的尾部与可吸收聚乳酸环螺纹连接，实现微动连接锁定近端可吸收模块以维持顶压复位。本发明的内固定装置对患者友好，能个性化定制，便于开窗顶压复位关节面并有效维持固定。
The present invention discloses a nested assembly type internal fixation device for the outer side of the tibial plateau, comprising a titanium alloy steel plate, a proximal absorbable module and a top pressure reduction locking absorbable rod, a window top pressure reduction area corresponding to the collapsed area of the tibial plateau articular surface is provided on the titanium alloy steel plate close to the lateral bone surface of the tibia, a steel plate proximal locking hole is provided on the proximal side of the window top pressure reduction area, and a steel plate sliding pressurizing hole is provided on the distal side; a proximal absorbable module is embedded and installed in the window top pressure reduction area, an absorbable polylactic acid ring is embedded in the proximal module micro-motion hole on the proximal absorbable module, the top pressure reduction locking absorbable rod is driven into the collapsed area of the tibial plateau articular surface through the proximal module micro-motion hole, and the tail of the top pressure reduction locking absorbable rod is threadedly connected with the absorbable polylactic acid ring, so as to realize micro-motion connection and lock the proximal absorbable module to maintain top pressure reduction. The internal fixation device of the present invention is patient-friendly, can be customized, is convenient for window top pressure reduction of the articular surface and effectively maintains fixation.
Description
Technical Field
The invention belongs to the technical field of orthopedic medical instruments, and particularly relates to a nested assembly type internal fixing device for the outer side of a tibia platform.
Background
In the treatment of tibial plateau fractures, the tibial plateau lateral anatomic locking plates play an important role in the stabilization and healing of the fracture site. The traditional internal fixing device is mostly made of titanium alloy materials, such as steel plates, screws and the like, and has the problems of platform collapse again, stress shielding, fixing looseness and the like although the traditional internal fixing device has a certain effect. If the rigidity of the metal material is too high, stress shielding is easy to cause, and fracture healing is affected; the rigidity of the internal fixing device is changed in the fracture healing process, the constant mechanical property of the metal material can be bent, broken and the like, so that the fixing is invalid, the compatibility of the metal material and human tissues is relatively poor, allergic reaction, rejection and other adverse reactions are easy to cause, meanwhile, the metal material is not easy to degrade in the body, the traditional internal fixing device needs to be taken out by a secondary operation after fracture healing, and a certain pain and economic burden are brought to a patient. In addition, the traditional internal fixing device is mostly static and is difficult to adapt to the physiological environment and mechanical environment of the fracture part, so that the fixing effect of the fracture part is unstable, displacement, dislocation and other phenomena are easy to occur, fracture healing is affected, and due to the fact that the fixing effect of the traditional internal fixing device is unstable, a patient needs a long recovery period and carries out repeated check and adjustment for multiple times, pain and economic burden of the patient are increased, and the treatment effect is possibly affected.
Along with the development of material science, polylactic acid is used as a degradable material, has good biocompatibility and degradability, and is widely applied to the field of medical instruments. The polylactic acid material is applied to the fracture internal fixation device, can have good supporting effect in the early stage of the fracture healing process, and then gradually degrades and fuses with surrounding bones, so that the irritation of local tissues is relieved. Biological fixation techniques emphasize the biological environment of fracture treatment, reduce mechanical interference to the fracture site, promote the natural healing process of the fracture. However, the polylactic acid steel plate is only suitable for non-load areas because of insufficient material strength, and the polylactic acid steel plate needs to be in a regular form, and when the joint is in a complex irregular form, the pure polylactic acid material structure cannot be used.
In this context, nested assembly and micro-motion internal fixation techniques have evolved. The technology can better adapt to the physiological environment of the fracture part and promote fracture healing by carrying out personalized nesting and assembling on the internal fixing device and keeping certain micro-motion in the fixing process. In addition, with the continued advancement of medical device manufacturing technology, the design and manufacture of internal fixation devices has evolved. The design concepts of individuation, precision and functionalization gradually become the development trend of the technical field. The improvement and innovation of the prior art not only can improve the treatment effect, but also can reduce the pain and the economic burden of patients.
Thus, for tibial plateau fractures around the knee that are complex irregularities, there is a need to provide a new tibial plateau fracture internal fixation solution.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a nested assembly type internal fixing device for the outer side of a tibia plateau.
The invention aims at solving the problems through the following technical scheme:
A nested assembled internal fixing device for the outer side of a tibia platform is characterized by comprising a titanium alloy steel plate designed based on the anatomical form of the outer side of the tibia platform, a near-end absorbable module and a jacking resetting locking absorbable rod, wherein the titanium alloy steel plate can be clung to the bone surface of the outer side of the tibia, a windowing jacking resetting area corresponding to the joint surface subsidence area of the tibia platform is arranged on the titanium alloy steel plate, a steel plate near-end locking hole is arranged on the near-end side of the windowing jacking resetting area, a steel plate sliding pressurizing hole is arranged on the far-end side of the windowing jacking resetting area, a near-end absorbable module is embedded in the windowing jacking resetting area, an absorbable polylactic acid ring is embedded in the near-end module micro hole on the near-end absorbable module, the jacking resetting locking absorbable rod is driven into the joint surface subsidence area of the tibia platform through the near-end module micro hole, and the tail of the jacking resetting locking absorbable rod is in threaded connection with the absorbable polylactic acid ring, so that the micro-motion connection locking near-end absorbable module can maintain jacking resetting.
The proximal end outer edge of the proximal end absorbable module is provided with an open proximal end module absorbable groove, and the titanium alloy steel plate at the proximal end side of the fenestration jacking reset zone is provided with an open steel plate proximal end absorption groove, the open proximal end module absorbable groove and the steel plate proximal end absorption groove which are oppositely arranged form a proximal end absorbable hole, and the proximal end absorbable hole of the embedded absorbable polylactic acid ring is used for implanting absorbable screws and/or titanium alloy screws.
The proximal absorption groove of the steel plate is 3/4 groove, and the absorbable groove of the proximal module is 1/4 groove.
The proximal end side of the proximal end absorbable module is provided with a proximal end module locking hole, the proximal end module locking hole embedded with an absorbable polylactic acid ring or a titanium alloy spring ring is used for implanting a jacking reset locking absorbable rod or an absorbable screw or a titanium alloy locking screw, the proximal end module micro-motion holes are arranged in pairs, and the proximal end module micro-motion holes and the proximal end module locking hole form an inverted triangle layout.
When the proximal absorbable module needs to be pressurized to maintain the jacking and resetting, a titanium alloy locking screw is implanted into a proximal module locking hole of the embedded titanium alloy spring ring.
The titanium alloy locking screw can be sleeved with a hollow absorbable support rod.
A plurality of near-end Kirschner wire holes are arranged beside the micro-motion holes of the near-end module, and the near-end Kirschner wire holes are used for temporarily fixing the near-end absorbable module in the fenestration top pressure reset area.
Two proximal k-wire holes are typically disposed between the proximal module micro-motion hole and the proximal module locking hole, the proximal k-wire holes being located at the shoulder of the proximal module locking hole.
The width of the near-end absorbable module is 12-32 mm, and the edge width of the titanium alloy steel plates at two sides of the near-end absorbable module is 3-4 mm.
The jacking reset locking absorbable rod is formed by combining hollow absorbable support rods with titanium alloy tail absorbable screws and adopting hexagonal cross-section structures, wherein the hollow absorbable support rods are sleeved on absorbable body parts of the titanium alloy tail absorbable screws, and the titanium alloy tail absorbable screws penetrate out of the hollow absorbable support rods.
The implantation angle of the jacking reset locking absorbable rod is 45-75 degrees, so that the optimal jacking reset effect is achieved.
The steel plate near-end locking hole and the steel plate sliding pressurizing hole can be respectively implanted with titanium alloy screws for fixing the titanium alloy steel plate, and the steel plate sliding pressurizing hole is of a U-shaped groove structure, so that the positions of the titanium alloy screws at the steel plate sliding pressurizing hole can be adjusted.
The near-joint surface Kirschner wire is used for being implanted into the near-joint surface Kirschner wire, the near-joint surface Kirschner wire is used for temporarily positioning the titanium alloy steel plate and guiding titanium alloy screws implanted into a locking hole at the near end of the steel plate, standby Kirschner wires are respectively arranged on the titanium alloy steel plate at the near end side and the far end side of the fenestration jacking reset area, and standby Kirschner wires are arranged at the tail part of the far end of the titanium alloy steel plate.
The near joint surface Kirschner wire hole is 3/4 holes.
The far end of the titanium alloy steel plate is provided with a strip-shaped steel plate far end locking area, the far end side of the steel plate far end locking area is communicated with the steel plate sliding pressurizing hole, the steel plate far end locking area is used for being embedded into a far end absorbable module with a far end module locking hole, the far end module locking hole on the near end side of the far end absorbable module is opened towards the steel plate sliding pressurizing hole, a titanium alloy screw and/or an absorbable screw is implanted at the far end module locking hole, or an absorbable screw and/or a titanium alloy screw is implanted into the far end module locking hole embedded with an absorbable polylactic acid ring or a titanium alloy spring ring, so that the far end absorbable module is positioned and fixed in the steel plate far end locking area, the edge width of the titanium alloy steel plate on the near end side of the steel plate far end locking area is 1 mm-2 mm, and the edge width of the titanium alloy steel plate on the near end side of the far end is smaller than 1mm, so that the steel plate far end locking area on the titanium alloy steel plate is in a strip-shaped groove gradually expanding from the near end to the far end.
The proximal absorbable module, the distal absorbable module, the absorbable polylactic acid ring, the absorbable screw, the absorbable body of the titanium alloy tail absorbable screw and the hollow absorbable support rod are all made of polylactic acid absorbable materials.
In the above-mentioned scheme, the proximal tibia is adjacent to the knee joint, and one end of the titanium alloy steel plate adjacent to the knee joint is defined as the proximal titanium alloy steel plate end, and the other end of the titanium alloy steel plate is the distal titanium alloy steel plate end.
Compared with the prior art, the invention has the following advantages:
The nested assembly type internal fixing device for the outer side of the tibia platform is developed based on the latest progress in the fields of polylactic acid materials, titanium alloy materials, biological fixing technology, nested assembly and micro-motion internal fixing technology and the like, is made of polylactic acid and titanium alloy composite materials, has good biocompatibility and mechanical properties, can be personalized, accurate and functional based on parts of anatomical design, can better adapt to the shape of the tibia platform, improves the stability and treatment effect of fixation, can perform moderate joint rehabilitation training in early stage under the condition of good biomechanical environment and strong supporting structure fixation, reduces the loss of joint functions, can be gradually degraded in the fracture healing process due to the nested assembly and micro-motion internal fixing structure adopted by the internal fixing device, is simple and easy to use in design, has better structural support, and avoids the subsidence of the tibia platform.
The proximal absorbable module of the nested assembly type internal fixing device for the outer side of the tibia plateau is nested in the frame of the titanium alloy steel plate, a fracture windowing top pressure reset area is arranged below the proximal absorbable module, a hexagonal hollow absorbable support rod is configured to be in top pressure reset, locking and absorbable rod is combined with an absorbable polylactic acid ring, so that the fracture collapse part can be fixed to the greatest extent, the universal locking function is achieved, and the polylactic acid degradable material can grow and be tightly fused with poroma in a penetrating manner, so that the secondary collapse after the titanium alloy steel plate is taken out is avoided, and the treatment stability is improved.
The nested integral micro-motion structure adopted by the nested assembled internal fixing device for the outer side of the tibia plateau has higher rigidity at the initial stage of fracture healing, micro-motion of the fracture end gradually disappears along with fracture healing, micro-motion structure gradually generates micro-motion along with degradation of local absorbable materials, and can promote fracture healing, after fracture healing, stress shielding of an internal fixing steel plate can be reduced due to the existence of micro-motion, secondary operation extraction of the steel plate can be reduced, absorbable polylactic acid materials are mainly distributed in a low-stress area of the device, fracture healing can be promoted due to the existence of the nested micro-motion structure, and the device can be regarded as an internal fixing bracket structure along with complete absorption of the polylactic acid materials, so that complications are reduced.
The nested assembled internal fixing device for the outer side of the tibia platform provided by the invention has the advantages that the polylactic acid absorbable material is compounded on the titanium alloy locking steel plate, the use of metal materials is reduced, the absorbable material is added into the local component improvement of the locking structure, along with the absorption of the degradable material at different compounding parts, the stress of the internal fixing steel plate is changed in the fracture healing stage, the biological fixing steel plate which is more in line with the fracture healing mechanical environment is provided, the bone defect part is properly added with part of the absorbable polylactic acid material to have osteogenesis induction effect, and the local compounding polylactic acid absorbable part and the absorbable screw can effectively avoid the joint damage of the metal materials.
Drawings
FIG. 1 is a schematic illustration of the main structure of a nested assembled internal fixation device for the lateral side of a tibial plateau provided by the present invention;
FIG. 2 is a schematic diagram of a combined structure of a titanium alloy steel plate and a titanium alloy spring ring provided by the invention;
FIG. 3 is a schematic view of the structure of the proximal absorbable module provided by the present invention;
FIG. 4 is a schematic view of the structure of the distal absorbable module provided by the present invention;
FIG. 5 is a schematic diagram of the structure of the push reset locking absorbable rod provided by the invention;
FIG. 6 is a schematic view of the structure of the titanium alloy tail absorbable screw provided by the invention;
FIG. 7 is a schematic view of a hollow absorbable support rod of the present invention;
FIG. 8 is a schematic view of a combination of a titanium alloy steel plate, a distal absorbable module, a proximal absorbable module, and an implanted push-reset locking absorbable rod according to the present invention;
FIG. 9 is a schematic diagram of the absorbable polylactic acid ring provided by the invention;
FIG. 10 is a schematic view of a titanium alloy spring ring according to the present invention;
FIG. 11 is a schematic view of the structure of the tibial plateau of FIG. 1 in accordance with the present invention;
fig. 12 is a perspective view of the use of the nested assembled internal fixation device for the lateral side of the tibial plateau provided by the present invention.
The device comprises a 1-titanium alloy steel plate, a 11-near joint surface Kelvin hole, a 12-steel plate near end locking hole, a 13-steel plate near end absorbing groove, a 14-fenestration jacking reset area, a 15-steel plate sliding pressurizing hole, a 16-steel plate far end locking area, a 17-standby Kelvin hole, a 2-near end absorbable module, a 21-near end module absorbable groove, a 22-near end module micro-hole, a 23-near end module locking hole, a 24-near end Kelvin hole, a 25-near end absorbable hole, a 3-far end absorbable module, a 31-far end module locking hole, a 32-far end Kelvin hole, a 4-titanium alloy screw, a 5-titanium alloy spring ring, a 6-titanium alloy locking screw, a 7-absorbable polylactic acid ring, an 8-absorbable screw, a 9-jacking resetting locking absorbable rod, a 91-titanium alloy tail absorbable screw and a 92-hollow absorbable support rod.
Detailed Description
In order to describe the technical content, constructional features, achieved objects and effects of the invention in detail, the technical solutions of the embodiments of the present invention will be described below with reference to the accompanying drawings of the embodiments of the present invention.
In the present invention, spatial orientation terms such as "horizontal", "vertical", "front", "rear", "left", "right", "top", "on", "inside", "one side", etc. are used to describe the positional relationship of components, orientations or directions of movement as shown in the drawings, are merely for convenience in describing the present invention, and do not imply or indicate that the device or component in question must have a specific orientation or be configured or operated in a specific orientation, and thus are not to be construed as limiting the present invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "connected" and "fixed" are to be construed broadly, and for example, "connected" may be either fixed, detachably connected or integrally formed, may be directly connected or indirectly connected through an intermediary, and "fixed" may be wholly fixed in all directions or fixed in any orientation so that the components cannot be displaced or displaced in that direction, but may be moved in other orientations.
The embedded assembly type internal fixing device for the outer side of the tibia plateau comprises a titanium alloy steel plate 1 designed based on the anatomical form of the outer side of the tibia plateau, a near-end absorbable module 2 and a top-pressure resetting and locking absorbable rod 9, wherein the titanium alloy steel plate 1 can be tightly attached to the bone surface of the outer side of the tibia, a windowing top-pressure resetting area 14 corresponding to the subsidence area of the joint surface of the tibia plateau is arranged on the titanium alloy steel plate 1, a steel plate near-end locking hole 12 is arranged at the near-end side of the windowing top-pressure resetting area 14, a steel plate sliding pressurizing hole 15 is arranged at the far-end side, titanium alloy screws 4 for fixing the titanium alloy steel plate 1 can be respectively implanted into the steel plate near-end locking hole 12 and the steel plate sliding pressurizing hole 15, a near-end absorbable module 2 is embedded in the windowing top-pressure resetting area 14, an absorbable polylactic acid ring 7 is embedded in the near-end module micro-hole 22 on the near-end absorbable module 2, the top-pressure resetting and locking absorbable rod 9 is driven into the area of the joint surface of the tibia plateau through the near-end module micro-hole 22, the top-pressure resetting and locking absorbable rod 9 can be connected with the tibia-side of the top-pressure resetting ring 7 to achieve the best angle, and the best effect of absorbing and can achieve the best effect of the top-pressure resetting and achieve the top-pressure resetting effect of 75 degrees.
In the structure, a plurality of near-joint surface Kirschner wire holes 11 are arranged on the outer edge of the near end of the titanium alloy steel plate 1, the near-joint surface Kirschner wire holes 11 which are open towards the outer side are used for implanting near-joint surface Kirschner wires, the near-joint surface Kirschner wires are used for temporarily positioning the titanium alloy steel plate 1 and playing a role in guiding the titanium alloy screws 4 implanted at the position of the locking holes 12 at the near end of the steel plate, standby Kirschner wire holes 17 are respectively arranged on the titanium alloy steel plate 1 at the near end side and the far end side of the fenestration roof pressure reset area 14, and standby Kirschner wire holes 17 are arranged at the tail end of the titanium alloy steel plate 1, wherein the standby Kirschner wire holes 17 are used for positioning the titanium alloy steel plate 1 only when operation is needed.
In the above structure, the fenestration top-pressure resetting region 14 where the proximal absorbable module 2 is located in the central region of the titanium alloy steel plate 1 in the width direction, the width of the proximal absorbable module 2 is 12 mm-32 mm, the edge width of the titanium alloy steel plate 1 at both sides of the proximal absorbable module 2 is 3 mm-4 mm, so that the fenestration top-pressure resetting region 14 is as large as possible, the volume of the proximal absorbable module 2 is enlarged, the proximal absorbable module 21 with an opening is arranged at the proximal outer edge of the proximal absorbable module 2, and the titanium alloy steel plate 1 at the proximal side of the fenestration top-pressure resetting region 14 is provided with an open steel plate proximal absorbable slot 13, the open-ended proximal absorbable module 21 and the steel plate proximal absorbable slot 13 form a proximal absorbable hole 25, the proximal absorbable hole 25 of the embedded absorbable polylactic acid ring 7 is used for implanting the absorbable screw 8 and/or the titanium alloy screw 4, the proximal absorbable locking hole 23 is arranged at the distal side of the proximal absorbable polylactic acid module 2, and the proximal absorbable ring 7 or the titanium alloy screw 8 or the absorbable locking hole 9 is used for implanting the proximal absorbable screw 8. The near-end module micro-holes 22 are arranged in pairs, the near-end module micro-holes 22 and the near-end module locking holes 23 form a stable inverted triangle layout structure, and the near-end module micro-holes 22 and the near-end module locking holes 23 of the embedded absorbable polylactic acid ring 7 are implanted with the jacking reset locking absorbable rod 9, but when the near-end absorbable module 2 needs to be pressurized to maintain jacking reset, the near-end module locking holes 23 of the embedded titanium alloy spring ring 5 are implanted with the titanium alloy locking screw 6, and the hollow absorbable support rod 92 can be sleeved on the titanium alloy locking screw 6 according to the requirement.
To temporarily secure the proximal absorbable module 2, a number of proximal k-wire holes 24 are disposed beside the proximal module micro-holes 22, the proximal k-wire holes 24 being used to temporarily secure the proximal absorbable module 2 in the fenestrated top pressure reset zone 14, and two proximal k-wire holes 24 are typically disposed between the proximal module micro-holes 22 and the proximal module locking holes 23, the proximal k-wire holes 24 being located at the shoulders of the proximal module locking holes 23.
In the above structure, the pressing reset locking absorbable rod 9 is composed of a titanium alloy tail absorbable screw 91 and a hollow absorbable support rod 92 adopting a hexagonal cross-section structure, wherein the hollow absorbable support rod 92 is sleeved on the absorbable body of the titanium alloy tail absorbable screw 91, and the titanium alloy tail absorbable screw 91 penetrates out of the hollow absorbable support rod 92.
In the above-described structure, the steel plate sliding pressurizing hole 15 has a U-shaped groove structure, so that the position of the titanium alloy screw 4 at the steel plate sliding pressurizing hole 15 can be adjusted.
In the above structure, the distal end of the titanium alloy steel plate 1 is provided with a strip-shaped steel plate distal end locking region 16, the distal end side of the steel plate distal end locking region 16 is communicated with the steel plate sliding pressurizing hole 15, the steel plate distal end locking region 16 is used for embedding a distal end absorbable module 3 with a distal end module locking hole 31, the distal end module locking hole 31 of the proximal end side of the distal end absorbable module 3 is opened towards the steel plate sliding pressurizing hole 15, the titanium alloy screw 4 and/or the absorbable screw 8 are implanted at the distal end module locking hole 31, or the absorbable screw 8 and/or the titanium alloy screw 4 are implanted in the distal end module locking hole 31 embedded with the absorbable polylactic acid ring 7 or the titanium alloy spring ring 5, so as to fix the distal end absorbable module 3 in the steel plate distal end locking region 16. Because the proximal end of the nested assembly type internal fixing device is a low-stress area, the more the absorbable part can be larger towards the distal end, the edge width of the titanium alloy steel plates 1 at the two sides of the proximal end of the steel plate distal locking area 16 is 1 mm-2 mm, and the edge width of the titanium alloy steel plates 1 at the two sides of the distal end is less than 1mm, so that the steel plate distal locking area 16 on the titanium alloy steel plates 1 is in a strip-shaped groove which gradually expands from the proximal end to the distal end, and the overall integrity of the structure of the titanium alloy steel plates 1 can be maintained. A distal k-wire 32 may also be provided on the distal absorbable module 3, as desired.
The following illustrates, by way of example, a specific construction of a nest assembly type internal fixation device for the lateral side of a tibial plateau provided by the present invention.
1-2 And 11-12, a nested assembly type internal fixing device for the outer side of a tibia platform is disclosed, wherein one end of a titanium alloy steel plate close to a knee joint is a titanium alloy steel plate proximal end, then the other end of the titanium alloy steel plate is a titanium alloy steel plate distal end, four 3/4-hole near joint surface Kirschner pinholes 11 positioned at the outer edge of the proximal end, three steel plate proximal locking holes 12, four steel plate proximal absorbing grooves 13 (with openings facing a fenestration top pressure reset area 14), one fenestration top pressure reset area 14 (which is substantially communicated with the four steel plate proximal absorbing grooves 13), one steel plate sliding pressurizing hole 15, one steel plate distal locking area 16, and three spare Kirschner pinholes 17 positioned on the titanium alloy steel plate 1 (positioned at the outer side of the steel plate proximal absorbing grooves 13, between the fenestration top pressure reset area 14 and the steel plate sliding pressurizing hole 15 and the distal side of the steel plate distal locking area 16 respectively) are sequentially arranged on the titanium alloy steel plate 1, the open near joint surface Kirschner pinholes 11 are used for temporarily implanting near joint surface Kirschner pinholes for the outer side of the tibia platform, the fenestration top pressure reset area is designed to be better in order to keep the near joint surface fixing device to be capable of fixing the proximal joint surface of being implanted by the proximal joint surface, and the proximal surface fixing device is provided with a certain effect, and the proximal joint surface is capable of fixing the proximal surface of the surface is kept to be implanted by the surface of the contact surface and the surface is positioned by the surface of the titanium alloy plate surface and the surface is positioned near a contact device; the steel plate proximal locking holes 12 are used for implanting and fixing the titanium alloy screws 4 of the titanium alloy steel plate 1, and one row of three titanium alloy screws 4 can provide more support, can walk with early load bearing, the percutaneous type absorbable screw can also avoid re-collapse after internal fixation and extraction, the proximal end absorption groove 13 and the proximal end module absorbable groove 21 of the steel plate are combined to form a proximal end absorbable hole 25, the proximal end absorbable hole 25 is used for implanting absorbable screws 8 and/or titanium alloy screws 4 with absorbable polylactic acid rings 7, preferably the absorbable screws 8 are implanted, the absorbable polylactic acid rings 7 and the absorbable screws 8 form a micro-motion structure relative to the proximal end absorbable module 2 and the titanium alloy steel plate 1, a fenestration jacking reset area 14 is used for embedding the proximal end absorbable module 2 and adopting a micro-motion structure formed by the absorbable polylactic acid rings 7 and the jacking reset locking absorbable rods 9 to fix, or the micro-motion structure formed by the absorbable polylactic acid rings 7 and the jacking reset locking absorbable rods 9 is further configured to be combined with a pressurizing structure formed by titanium alloy spring rings 5 (or the absorbable polylactic acid rings 7) and titanium alloy locking screws 6 (or the combined structure of the titanium alloy locking screws 6 and the hollow absorbable support rods 92), the steel plate sliding hole 15 is implanted into the titanium alloy steel plate 1, the fenestration type steel plate 4 can be adjusted, and the proximal end absorbable screw 3 and the absorbable screw 3 can be embedded into the absorbable needle 3, and the absorbable needle 3 can be further embedded into the absorbable needle 3, and the absorbable needle 3 can be embedded into the absorbable needle 3, and the absorbable needle 3 is embedded into the absorbable needle 3, and the absorbable needle 3.
As shown in fig. 1,3, 11 and 12, the proximal absorbable module 2 is formed by arranging four open proximal module absorbable slots 21, two proximal module micro holes 22, one proximal module locking hole 23 and two proximal k-pin holes 24 on the proximal absorbable module 2 in sequence from the proximal end of the titanium alloy steel plate 1 to the distal end direction, the proximal absorbable module 21 and the steel plate proximal absorption slot 13 are formed into a proximal absorbable hole 25 capable of being implanted with an absorbable screw 8 with an absorbable polylactic acid ring 7, the micro structure formed by the absorbable screw 8 with the absorbable polylactic acid ring 7 can avoid re-collapse after being fixedly taken out in a secondary operation, the absorbable polylactic acid ring 7 and the absorbable screw 8 have an osteogenesis inducing effect, the proximal module micro holes 22 of the two embedded absorbable polylactic acid rings 7 are respectively implanted into a top pressure reset locking absorbable rod 9, the tails of the top pressure reset locking absorbable rod 9 are in threaded connection with the absorbable polylactic acid ring 7, the realization of micro connection locking proximal absorbable module 2 can maintain the proximal absorbable screw 8, and the titanium alloy ring 23 is implanted into the proximal absorbable screw 8 with the titanium alloy ring 7 or the titanium alloy ring 2, and the proximal absorbable screw 23 is embedded into the proximal absorbable screw 8, and the proximal absorbable module 7 is required to be locked by the top pressure reset locking rod 9.
As shown in fig. 4, 11 and 12, the distal absorbable module 3 is provided with five distal module locking holes 31, wherein the distal module locking holes 31 located at the distal end of the distal absorbable module 3 are opened toward the steel plate sliding pressurizing holes 15, and the titanium alloy screws 4 and/or absorbable screws 8 are implanted at the distal module locking holes 31, or the absorbable screws 8 and/or titanium alloy screws 4, preferably the absorbable screws 8 are implanted in the distal module locking holes 31 of the embedded absorbable polylactic acid ring 7 or titanium alloy spring ring 5 to fix the distal absorbable module 3 in the steel plate distal locking region 16.
The jacking reset locking absorbable rod 9 shown in fig. 5, 6, 7, 8, 11 and 12 is formed by combining a titanium alloy tail absorbable screw 91 shown in fig. 6 and a hollow absorbable support rod 92 shown in fig. 7, wherein the titanium alloy tail absorbable screw 91 is formed by combining a screw-shaped absorbable body part and a titanium alloy tail part, the absorbable body part is made of polylactic acid materials, the hollow absorbable support rod 92 made of polylactic acid materials adopts a hexagonal section structure, the hollow absorbable support rod 92 is sleeved on the absorbable body part of the titanium alloy tail absorbable screw 91, the titanium alloy tail absorbable screw 91 penetrates out of the hollow absorbable support rod 92, the installation structure of the jacking reset locking absorbable rod 9 is as shown in fig. 8, 11 and 12, and the jacking reset locking absorbable rod 9 can be used as an osteogenesis inducing part, and the micro-structure based on the jacking reset locking absorbable rod 9 is also beneficial to rehabilitation.
As shown in fig. 9, 11 and 12, the partially opened absorbable polylactic acid ring 7 is internally threaded, the absorbable polylactic acid ring 7 can be correspondingly embedded into the proximal module micro-motion hole 22, the proximal module locking hole 23, the proximal absorbable hole 25 and the distal module locking hole 31, and the titanium alloy screw 4, the titanium alloy locking screw 6, the absorbable screw 8 and the pressing resetting locking absorbable rod 9 which are matched with the absorbable polylactic acid ring 7 can form a micro-motion connection structure, and the micro-motion structure is designed to ensure that the initial stage of fracture healing has higher rigidity, and the micro-motion of the fracture end gradually disappears along with the fracture healing.
As shown in fig. 10, 11 and 12, the partially opened titanium alloy spring ring 5 is provided with threads in the titanium alloy spring ring 5, the titanium alloy spring ring 5 is embedded into the proximal module locking hole 23, the titanium alloy locking screw 6 embedded through the proximal module locking hole 23 or the sleeved titanium alloy locking screw 6 of the hollow absorbable support rod 92 or the jacking reset locking absorbable rod 9 can pressurize the proximal absorbable module 2, and can form a micro-motion structure relative to the proximal absorbable module 2, so as to realize micro-motion connection of the proximal absorbable module 2, the micro-motion structure is designed to ensure that the fracture has higher rigidity in the initial stage of fracture healing, and the micro-motion of the fracture end gradually disappears along with the fracture healing.
In the structure, the nested integral micro-motion structure is designed to enable the initial fracture healing stage to have higher rigidity, and in the healing process, micro-motion generated by the micro-motion structure along with the degradation of the local absorbable material can promote fracture healing at the later fracture healing stage, and micro-motion at the broken end of the fracture gradually disappears along with fracture healing.
The nested assembled internal fixation device for the outer side of the tibial plateau provided by the invention is further explained below from eight aspects of special structure based on anatomical design, material selection, prevention of locking nails from entering the knee joint, stress change and fracture healing, osteogenesis induction, prevention of damage to the knee joint by metal materials, modular design and universal locking function.
1. The special structure of the anatomical design is that the internal fixing device is in anatomical design, the shape of a tibial plateau is better adapted, the stability and the treatment effect of fixation are improved, a near-joint surface Kirschner wire is matched with a near-joint surface Kirschner wire hole 11 with 3/4 holes to be temporarily fixed, the temporary fixing design is favorable for precisely resetting and fixing a fracture part, the fixing is convenient to maintain when the joint surface is reset by windowing and jacking, multiple rows of screws can provide more support to ensure the stability of the internal fixing device, and meanwhile, the fixing strength and the micro-motion can be adjusted according to different stages of fracture healing, so that the fracture healing is promoted and the stress shielding effect is reduced.
2. The material is selected, the internal fixing device is formed by compounding titanium alloy and polylactic acid absorbable material, the titanium alloy has good biocompatibility and strength, and the polylactic acid absorbable material can be gradually degraded in the fracture healing process along with the time, so that the problem of taking out in a secondary operation is reduced, and the burden on a patient is lightened.
3. The locking nail is prevented from entering the knee joint, the internal fixing device is fixed by using the near-joint surface Kirschner wire matched with the near-joint surface Kirschner wire hole 11 with 3/4 holes to position and guide the titanium alloy screw 4 of the subchondral bone, the titanium alloy screw 4 implanted in the near-end locking hole 12 of the steel plate can be effectively prevented from being driven into the knee joint, further damage to the knee joint is reduced, and the titanium alloy screw 4 positioned and guided to the subchondral bone can accurately fix the fracture collapse area, so that the treatment effect is improved.
4. The stress change and fracture healing are that the stress of the titanium alloy steel plate 1 can be changed in the fracture healing stage due to the absorption of the polylactic acid absorbable material at different composite parts, the design of the composite structure is more in line with the mechanical environment of fracture healing, so that a patient can walk with a load at an early stage, the rehabilitation time of the patient is reduced, and in addition, the internal fixing device can be regarded as an internal fixing bracket structure along with the complete absorption of the polylactic acid material, and the complications are further reduced.
5. Osteogenesis inducing effect by adding a part of absorbable polylactic acid material at the bone defect, which has osteogenesis inducing effect (the matching of the absorbable polylactic acid ring 7 and the absorbable screw 8, the matching of the absorbable polylactic acid ring 7 and the pushing reset locking absorbable rod 9, the matching of the absorbable polylactic acid ring 7 and the hexagonal hollow absorbable support rod 92 and the absorbable screw 8, the matching of the absorbable polylactic acid ring 7 and the hexagonal hollow absorbable support rod 92 and the titanium alloy screw 4, the matching of the absorbable polylactic acid ring 7 and the hexagonal hollow absorbable support rod 92 and the titanium alloy locking screw 6, etc.), is helpful for healing the fracture part and reducing complications.
6. Avoiding the damage of the metal material to the joint by using the absorbable parts such as the proximal absorbable module 2, the distal absorbable module 3, the absorbable polylactic acid ring 7, the absorbable screw 8, the absorbable body part of the titanium alloy tail absorbable screw 91, the hollow absorbable support rod 92 and the like, the further damage of the metal material to the joint can be effectively avoided.
7. The modular design is that the far end of the titanium alloy steel plate 1 adopts a far end absorbable module 3 nested design, and the near end adopts a near end absorbable module 2 nested design, so that the implant is more flexible, and the damage to surrounding tissues is reduced.
8. The combination of the absorbable polylactic acid ring 7 and the jacking reset locking absorbable rod 9 or the absorbable polylactic acid ring 7 and the titanium alloy locking screw 6 sleeved with the hollow absorbable support rod 92 has the universal locking function, and the fracture collapse part can be fixed to the greatest extent.
When the embedded assembled internal fixing device for the outer side of a tibia plateau is used, firstly, aligning and aligning a fractured structural bone block of the tibia plateau, initially resetting a joint surface, keeping the bone cortex at a broken end relatively stable after resetting, embedding a absorbable polylactic acid ring 7 into a steel plate distal locking region 16 of a titanium alloy steel plate 1 by a distal module locking hole 31 of a distal absorbable module 3, placing the partially assembled titanium alloy steel plate 1 at a proper position close to the bone surface, embedding 2-3 proximal joint surface Kelvin holes 11 close to the joint surface for temporarily fixing the titanium alloy steel plate 1, embedding the implantation length of a proximal joint surface Kelvin pin not exceeding the transverse half length of the outer tibia plateau, perspective close to the joint surface and moderately picking and pulling a reset center collapse, taking the proximal joint surface Kelvin pin as a parallel reference, embedding a short titanium alloy screw 4 (parallel close to the joint surface) into a steel plate 1 by a steel plate proximal locking hole 12, adjusting a steel plate sliding hole 15, embedding a titanium alloy screw 4 into the proximal alloy spring 5, embedding the proximal alloy spring 5 into the proximal end window locking hole 23 into the titanium alloy steel plate 1, pressing the proximal joint surface, filling the proximal joint surface into the three-side absorbing area of the bone plate 1, filling the three-phase plate into the region of the bone plate, absorbing the three-shaped bone plate surface, and absorbing the same time being filled with the same type of the bone plate 1, and the bone plate being deformed by the same as the region, and the bone plate being deformed by the elastic joint surface, the proximal absorbable module 2 is temporarily fixed by two Kirschner wires through a proximal Kirschner wire hole 24 (two at a proximal module locking hole 23), the approximate length is measured by electric drilling, two jacking reset locking absorbable rods 9 with proper length are selected to be implanted into a proximal module micro-motion hole 22 embedded with an absorbable polylactic acid ring 7, the tail part of the jacking reset locking absorbable rod 9 is in threaded connection with the absorbable polylactic acid ring 7 to realize micro-motion connection and locking of the proximal absorbable module 2 to maintain jacking reset, 1 titanium alloy locking screw 6 sleeved with a hollow absorbable support rod 92 is implanted into the proximal module locking hole 23, and finally the absorbable screw 8 with proper length is used to be implanted into a distal module locking hole of the distal absorbable module 3. After the completion, the proximal k-wire implanted in the proximal k-wire hole 11 and the k-wire implanted in the proximal k-wire hole 24 are removed.
The above embodiments are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited by this, any modification made on the basis of the technical scheme according to the technical idea proposed by the present invention falls within the protection scope of the present invention, and the technology not related to the present invention can be implemented by the prior art.
Claims (8)
1. The embedded assembly type internal fixing device for the outer side of the tibia plateau is characterized by comprising a titanium alloy steel plate (1) designed based on the anatomical form of the outer side of the tibia plateau, a near-end absorbable module (2) and a jacking resetting locking absorbable rod (9), wherein the titanium alloy steel plate (1) can be clung to the bone surface of the outer side of the tibia, a windowing jacking resetting area (14) corresponding to the joint surface subsidence area of the tibia plateau is arranged on the titanium alloy steel plate (1), a steel plate near-end locking hole (12) is arranged at the near-end side of the windowing jacking resetting area (14), and a steel plate sliding pressurizing hole (15) is arranged at the far-end side;
The proximal end outer edge of the proximal end absorbable module (2) is provided with an open proximal end module absorbable groove (21), and the titanium alloy steel plate (1) at the proximal end side of the windowing jacking reset region (14) is provided with an open steel plate proximal end absorption groove (13), the open proximal end module absorbable groove (21) and the steel plate proximal end absorption groove (13) which are oppositely arranged form a proximal end absorbable hole (25), and the proximal end absorbable hole (25) of the embedded absorbable polylactic acid ring (7) is used for implanting absorbable screws (8) and/or titanium alloy screws (4);
The proximal end side of the proximal end absorbable module (2) is provided with proximal end module locking holes (23), the proximal end module locking holes (23) embedded with absorbable polylactic acid rings (7) or titanium alloy spring rings (5) are used for implanting a jacking reset locking absorbable rod (9) or absorbable screws (8) or titanium alloy locking screws (6), the proximal end module micro-motion holes (22) are arranged in pairs, and the proximal end module micro-motion holes (22) and the proximal end module locking holes (23) form inverted triangle layout.
2. The nested, assembled internal fixation device for the lateral aspect of a tibial plateau of claim 1, wherein a plurality of proximal k-wire pinholes (24) are disposed laterally of the proximal module micro-holes (22), the proximal k-wire pinholes (24) being used to temporarily secure the proximal absorbable module (2) within the fenestrated roof pressure reset zone (14).
3. The nested assembled internal fixation device for the lateral side of a tibial plateau as claimed in claim 1, wherein the width of the proximal absorbable module (2) is 12 mm-32 mm, and the edge width of the titanium alloy steel plates (1) on both sides of the proximal absorbable module (2) is 3 mm-4 mm.
4. The nested assembled internal fixation device for the lateral side of the tibial plateau as claimed in claim 1, wherein the jacking reset locking absorbable rod (9) is formed by combining hollow absorbable support rods (92) with hexagonal cross-section structures by using titanium alloy tail absorbable screws (91), the hollow absorbable support rods (92) are sleeved on the absorbable body parts of the titanium alloy tail absorbable screws (91), and the titanium alloy tail absorbable screws (91) penetrate out of the hollow absorbable support rods (92).
5. The nested assembled internal fixation device for the lateral side of a tibial plateau as claimed in claim 1 or 4, wherein the implantation angle of the push-push reset locking absorbable rod (9) is 45-75 degrees to achieve the optimal push-push reset effect.
6. The nested assembled internal fixation device for the lateral side of the tibial plateau as claimed in claim 1, wherein the proximal locking hole (12) and the sliding pressing hole (15) of the steel plate can be respectively implanted with titanium alloy screws (4) for fixing the titanium alloy steel plate (1), and the sliding pressing hole (15) of the steel plate has a U-shaped groove structure, so that the positions of the titanium alloy screws (4) at the sliding pressing hole (15) of the steel plate can be adjusted.
7. The nested assembly type internal fixation device for the lateral side of a tibial plateau as claimed in claim 1 or 6, wherein a plurality of near-joint surface Kirschner wires (11) are arranged on the outer edge of the near end of the titanium alloy steel plate (1), the near-joint surface Kirschner wires (11) which are open towards the outer side are used for being implanted into the near-joint surface Kirschner wires, the near-joint surface Kirschner wires are used for temporarily positioning the titanium alloy steel plate (1) and playing a role in guiding the titanium alloy screws (4) implanted in the locking holes (12) at the near end of the steel plate, standby Kirschner wires (17) are respectively arranged on the titanium alloy steel plate (1) at the near end side and the far end side of the fenestration jacking reset zone (14), and standby Kirschner wires (17) are arranged at the tail end of the far end of the titanium alloy steel plate (1).
8. The nested assembly type internal fixation device for the lateral side of a tibia plateau according to any one of claims 1 and 6, wherein a strip-shaped steel plate distal locking area (16) is arranged at the distal end of the titanium alloy steel plate (1), the distal end side of the steel plate distal locking area (16) is communicated with a steel plate sliding pressurizing hole (15), the steel plate distal locking area (16) is used for embedding a distal absorbable module (3) with a distal module locking hole (31), the distal module locking hole (31) at the proximal end side of the distal absorbable module (3) is opened towards the steel plate sliding pressurizing hole (15), a titanium alloy screw (4) and/or an absorbable screw (8) are implanted at the distal end of the distal module locking hole (31), or an absorbable screw (8) and/or a titanium alloy screw (4) are implanted at the distal end module locking hole (31) of the embedded in the absorbable polylactic acid ring (7) or the titanium alloy spring ring (5), so that the distal absorbable module (3) is fixedly positioned in the steel plate distal locking area (16), the width of the distal end locking area (16) is gradually reduced from the two sides of the steel plate (1) to the edge of the steel plate (1) at the two sides, and the width of the titanium alloy steel plate (1) is gradually reduced from the edge of the distal end of the steel plate (1) to the side.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103142300A (en) * | 2013-02-06 | 2013-06-12 | 中国科学院金属研究所 | Novel multifunctional bone plate and application thereof |
| CN204814142U (en) * | 2015-06-08 | 2015-12-02 | 上海市浦东新区周浦医院 | Condyle splitting is sinkd to fracture and is used locking plate in behind tibial plateau |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8523919B2 (en) * | 2010-09-27 | 2013-09-03 | Acumed Llc | Targeting guide with a radiopaque marker to facilitate positioning a bone plate on bone |
| DE102005043281A1 (en) * | 2005-09-09 | 2007-03-15 | Dieter Marquardt Medizintechnik Gmbh | Bone plate for maintaining proximal humerus fracture, has heading section whose region overlapping shank part in dorsal direction is larger than region of section overlapping shank part in ventral direction |
| US8523861B2 (en) * | 2010-08-30 | 2013-09-03 | Biomet Manufacturing, Llc | Method and apparatus for osteosynthesis |
| US20190076175A1 (en) * | 2017-09-13 | 2019-03-14 | Globus Medical, Inc. | Bone stabilization systems |
| CN213217545U (en) * | 2020-06-22 | 2021-05-18 | 苏州优贝特医疗器械有限公司 | Tibia far-end locking steel plate for pilon fracture |
| KR102548060B1 (en) * | 2020-12-18 | 2023-06-27 | 김정엽 | Plate body for proximal tibial osteotomy containing window hole and fixation plate apparatus for proximal tibial osteotomy using the same |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103142300A (en) * | 2013-02-06 | 2013-06-12 | 中国科学院金属研究所 | Novel multifunctional bone plate and application thereof |
| CN204814142U (en) * | 2015-06-08 | 2015-12-02 | 上海市浦东新区周浦医院 | Condyle splitting is sinkd to fracture and is used locking plate in behind tibial plateau |
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