CN119033455B - Nested assembly internal fixation device for intra-articular distal radius fractures - Google Patents
Nested assembly internal fixation device for intra-articular distal radius fractures Download PDFInfo
- Publication number
- CN119033455B CN119033455B CN202411171120.8A CN202411171120A CN119033455B CN 119033455 B CN119033455 B CN 119033455B CN 202411171120 A CN202411171120 A CN 202411171120A CN 119033455 B CN119033455 B CN 119033455B
- Authority
- CN
- China
- Prior art keywords
- distal
- absorbable
- steel plate
- titanium alloy
- proximal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 206010037802 Radius fracture Diseases 0.000 title description 5
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 160
- 239000010959 steel Substances 0.000 claims abstract description 160
- 229910001069 Ti alloy Inorganic materials 0.000 claims abstract description 133
- 208000010392 Bone Fractures Diseases 0.000 claims abstract description 90
- 208000002658 Intra-Articular Fractures Diseases 0.000 claims abstract description 16
- 210000003484 anatomy Anatomy 0.000 claims abstract description 3
- 229920000747 poly(lactic acid) Polymers 0.000 claims description 45
- 239000004626 polylactic acid Substances 0.000 claims description 45
- 238000010521 absorption reaction Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 6
- 238000002513 implantation Methods 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- 230000002188 osteogenic effect Effects 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims 1
- 206010017076 Fracture Diseases 0.000 description 79
- 239000000463 material Substances 0.000 description 33
- 230000035876 healing Effects 0.000 description 32
- 238000013461 design Methods 0.000 description 15
- 230000011164 ossification Effects 0.000 description 11
- 239000007769 metal material Substances 0.000 description 10
- 230000008093 supporting effect Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 230000001939 inductive effect Effects 0.000 description 9
- 210000000988 bone and bone Anatomy 0.000 description 8
- 210000003857 wrist joint Anatomy 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000013329 compounding Methods 0.000 description 4
- 210000001519 tissue Anatomy 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 206010053206 Fracture displacement Diseases 0.000 description 1
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- 208000005214 Poroma Diseases 0.000 description 1
- 208000035965 Postoperative Complications Diseases 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 208000026935 allergic disease Diseases 0.000 description 1
- 230000007815 allergy Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 210000000845 cartilage Anatomy 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 201000001013 eccrine acrospiroma Diseases 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Classifications
-
- 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
Landscapes
- 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)
- Neurology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The invention discloses a nested assembled internal fixing device for distal radius intra-articular fracture, which comprises a titanium alloy steel plate, a distal absorbable module and an absorbable support rod, wherein the titanium alloy steel plate is designed based on distal radius palmar anatomy, the lower distal edge of the titanium alloy steel plate can be clung to the edge of a distal radius watershed, a fracture windowing jacking reset region corresponding to a distal radius articular surface collapse region is arranged on the titanium alloy steel plate, a steel plate distal locking hole is arranged at the distal side of the fracture windowing jacking reset region, a steel plate proximal locking groove is arranged at the proximal side of the fracture windowing jacking reset region, at least one absorbable support rod is implanted into the distal radius articular surface collapse region, the front end of the absorbable support rod is positioned in the severe collapse region, the distal absorbable module is fixedly arranged in the fracture windowing jacking reset region, and the bottom of the distal absorbable module is closely contacted with the upper edge of the tail part of the absorbable support rod. The internal fixing device can fix the super-distal end, is convenient for windowing, pushing and resetting the joint surface and can effectively maintain fixation.
Description
Technical Field
The invention belongs to the technical field of orthopedic medical instruments, and particularly relates to a nested assembled internal fixing device for distal radius intra-articular fracture.
Background
Distal radius fractures are a common fracture type, where the fracture line is proximal to the articular surface and the fracture type is particularly complex where the articular surface collapses. The traditional treatment method often has the problems of unstable fixation and easy displacement, so that the fracture healing is slow or poor, and the recovery and the life quality of patients are affected. Along with the continuous development of material science and biomedical engineering, more and more novel biological materials and internal fixation devices are applied to fracture treatment, and along with the continuous updating of fracture treatment concepts, the individuation of treatment and the optimization of mechanical environment are emphasized more. Among them, an absorbable material is attracting attention as a material which is excellent in biocompatibility and can be degraded in vivo. They can degrade in the body and gradually be replaced by human tissue, avoiding the need for secondary surgery. Polylactic acid is used as a degradable material, has good biocompatibility and degradability, is widely applied to the field of medical instruments, and can be used in an internal fracture fixing device, has good supporting effect in the early stage of the fracture healing process, and then is gradually degraded and fused with surrounding bones to lighten the irritation of local tissues. The biological fixation technology emphasizes the biological environment of fracture treatment, reduces mechanical interference to fracture parts and promotes the natural healing process of fracture, so that the biological fixation technology is rapidly developed as one of important means of fracture treatment.
At present, due to the limitations of the existing traditional fixation methods and the existing materials, the technology and the fixed products for treating the fracture in the distal joint of the radius have the following objective disadvantages:
1. The fixation is not firm, and for the distal radius fracture, especially the fracture type that the fracture line is near the joint surface and the joint flour is crushed and collapsed, the traditional plaster fixation, splint fixation and other methods are difficult to provide stable and reliable fixation due to the special anatomical structure and the complex biomechanical environment of the fracture part, and the fracture displacement and poor healing are easily caused;
2. The material strength is insufficient, because the strength of the polylactic acid steel plate made of the polylactic acid material has limitation, the current polylactic acid steel plate is only suitable for a non-load area, and meanwhile, the polylactic acid steel plate is in a regular form, and the periphery of the wrist joint is in a complex irregular form, so that the polylactic acid steel plate cannot be used;
3. The metal material has the limitations that the traditional material can generate stress shielding effect in the body to influence the healing of fracture parts, in addition, the metal material also has the risks of allergy, infection and the like to cause potential threat to the health of patients, the rigidity of the internal fixing device is changed in the fracture healing process, and the constant mechanical property of the metal material can generate the phenomena of bending, fracture and the like to cause the fixing failure;
4. the metal material is not easy to degrade in the body, the metal internal fixing device is required to be taken out after fracture healing, and certain pain and economic burden are brought to the patient;
5. The mechanical environment of fracture healing is not favored, the traditional internal fixation devices often cannot provide a good mechanical environment for the fracture site to affect fracture healing, for example, the rigid metal internal fixation devices can produce a stress shielding effect when bearing load, resulting in difficult fracture healing.
Therefore, for distal radius fractures, particularly fracture types where the fracture lines are proximal to the articular surface and the articular surface is crushed and collapsed, it is important to develop an internal fixation device that is constructed using the advantages of the existing materials.
Disclosure of Invention
The invention aims at solving the problems existing in the prior art and provides a nested assembled internal fixation device which has the advantages of ultra-distal fixation, convenient windowing and pressing and resetting of joint surfaces and effective maintenance fixation and is used for treating distal radius intra-articular fracture.
The invention aims at solving the problems through the following technical scheme:
A nested assembled internal fixing device for distal radius intra-articular fracture is characterized by comprising a titanium alloy steel plate designed based on distal radius palmar anatomic morphology, a distal absorbable module and an absorbable support rod, wherein the lower distal edge of the titanium alloy steel plate can be clung to the edge of a watershed at the distal radius, a fracture windowing top-pressure resetting area corresponding to a distal radius articular surface collapse area is arranged on the titanium alloy steel plate, a steel plate distal locking hole is arranged on the distal side of the fracture windowing top-pressure resetting area, a steel plate proximal locking groove is arranged on the proximal side of the fracture windowing top-pressure resetting area, at least one absorbable support rod is implanted into the severe collapse area of the distal radius articular surface collapse area, the front end of the absorbable support rod is positioned in the severe collapse area of the distal radius articular surface collapse area, the distal absorbable module is fixedly arranged in the fracture windowing top-pressure resetting area, and the bottom of the distal absorbable module is closely contacted with the upper edge of the tail of the absorbable support rod.
The upper edge of the tail of the absorbable support rod is positioned at the position from the proximal end to the distal end of the distal absorbable module.
The implantation angle of the absorbable support rod is 45-75 degrees so as to achieve the optimal jacking resetting effect, and the absorbable support rod serving as the osteogenesis inducing component adopts a hexagonal cross-section structure.
The proximal side of the distal absorbable module is provided with a distal module locking hole, the distal module locking hole is used for implanting a titanium alloy locking screw with a titanium alloy spring ring so as to moderately pressurize and maintain close contact between the absorbable support rod and the distal absorbable module, two sides of the distal module locking hole are provided with distal Kirschner pinholes, and the distal Kirschner pinholes are used for temporarily locking the distal absorbable module in a fracture windowing jacking reset zone.
The outer edge of the far end absorbable module is provided with a far end module absorbable groove, and a steel plate far end absorption groove is arranged on a titanium alloy steel plate at the far end side of the fracture windowing jacking reset area, the far end module absorbable groove and the steel plate far end absorption groove which are oppositely arranged form a far end absorbable hole, and the far end absorbable hole is used for implanting an absorbable screw with an absorbable polylactic acid ring or a titanium alloy screw with an absorbable polylactic acid ring.
The width of the far-end absorbable module is 12 mm-22 mm, and the edge width of the titanium alloy steel plates at two sides of the far-end absorbable module is 3 mm-4 mm.
The steel plate far-end locking hole and the steel plate near-end locking groove can be respectively implanted with titanium alloy screws to fix the titanium alloy steel plate, and the steel plate near-end locking groove is of a U-shaped groove structure, so that the position of the titanium alloy screws at the steel plate near-end locking groove can be adjusted.
The outer edge of the far end of the titanium alloy steel plate is provided with a plurality of near-joint surface Kirschner wire holes, the near-joint surface Kirschner wire holes 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 and guiding titanium alloy screws implanted in the far-end locking holes of the steel plate, the titanium alloy steel plate at the near-end side of the far-end locking holes of the steel plate is provided with standby Kirschner wire holes, and the titanium alloy steel plate between the fracture windowing jacking reset area and the near-end locking grooves of the steel plate is provided with standby Kirschner wire holes.
The near-end side of the steel plate near-end locking groove is provided with a strip-shaped steel plate near-end locking area, the far-end side of the steel plate near-end locking area is communicated with the steel plate near-end locking groove, the steel plate near-end locking area is used for being embedded into a near-end absorbable module with a near-end module locking hole, an opening of the near-end module locking hole at the far end of the near-end absorbable module is communicated with the steel plate near-end locking groove, and titanium alloy screws and/or absorbable screws are implanted in the near-end module locking hole to fix the near-end absorbable module in the steel plate near-end locking area.
The edge width of the titanium alloy steel plates at two sides of the far end of the locking area at the near end of the steel plate is 1 mm-2 mm, and the edge width of the titanium alloy steel plates at two sides of the near end is smaller than 1mm, so that the locking area at the near end of the steel plate is in a strip-shaped groove which gradually expands from the far end to the near end of the titanium alloy steel plate.
The distal absorbable module, the proximal absorbable module, the absorbable polylactic acid ring, the absorbable screw and the absorbable support rod are all made of polylactic acid absorbable materials.
In the above-mentioned scheme, the distal radius end is near the wrist joint, and one end of the titanium alloy steel plate near the wrist joint is defined as the distal end of the titanium alloy steel plate, and the other end of the titanium alloy steel plate is the proximal end of the titanium alloy steel plate.
Compared with the prior art, the invention has the following advantages:
The nested assembled internal fixing device provided by the invention has the design of ultra-distal end fixation, convenient windowing, jacking and resetting of joint surfaces and effective maintenance of fixation, and reduces the use of metal materials by compounding an absorbable part made of polylactic acid materials on a titanium alloy steel plate, and meanwhile, an absorbable support rod serving as an osteogenesis inducing component is beneficial to rapid healing of fracture parts, so that the problems of unstable fixation, easy displacement and the like existing in the traditional treatment method are solved, and the nested assembled internal fixing device has wide application prospect and important social significance.
The nested assembled internal fixing device provided by the invention adopts an anatomical design, can better adapt to the distal radius palm side anatomical form, improves the fixing stability and treatment effect, adopts a near joint surface Kirschner wire to fix 3/4 holes and position and guide titanium alloy screws under cartilage to ensure the stability of the device, can accurately fix a fracture collapse area, improves the treatment effect, facilitates the windowing and jacking of a reduction zone, effectively maintains the fixed special design, avoids the damage to the wrist joint, reduces the occurrence of postoperative complications, and adopts a structure made of titanium alloy materials and polylactic acid materials in a compounding manner, and can be gradually degraded in the fracture healing process, thereby reducing the burden on patients.
The nested assembled internal fixing device provided by the invention provides more support through the multiple rows of screws, realizes distal radius fixation, and can improve the stability and reliability of fixation.
The nested assembled internal fixation device provided by the invention adopts the osteogenesis inducing component which is beneficial to the rapid healing of fracture parts. The polylactic acid absorbable material can grow with poroma in a penetrating way, is tightly fused, can avoid re-collapse after internal fixation and extraction, improves the stability of treatment, reduces the requirement of secondary operation, and relieves the pain and economic burden of patients.
The nested assembled internal fixing device provided by the invention is formed by compounding polylactic acid absorbable materials and titanium alloy, has the design of micro-motion connection and nested assembly structures, can adjust the fixing strength and micro-motion according to different stages of fracture healing so as to promote fracture healing and reduce the stress shielding effect, can reduce the stress shielding of a titanium alloy steel plate, is mainly distributed in a low-stress area of the device, can promote fracture healing due to the existence of the nested micro-motion structure, and can be regarded as an internal fixing bracket structure along with the complete absorption of the polylactic acid absorbable materials, so that complications are further reduced.
Drawings
FIG. 1 is a schematic diagram of the main structure of a nested assembled internal fixation device for distal radius intra-articular fracture 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 distal absorbable module provided by the present invention;
FIG. 4 is a schematic view of the structure of the proximal absorbable module provided by the present invention;
FIG. 5 is a schematic view of the structure of the absorbable support rod provided by the present invention;
FIG. 6 is a schematic view of a combined structure of a titanium alloy steel plate, a distal absorbable module, a proximal absorbable module, and an implanted absorbable support rod provided by the invention;
FIG. 7 is a schematic structural view of an absorbable polylactic acid ring provided by the invention;
FIG. 8 is a schematic view of a titanium alloy spring ring according to the present invention;
FIG. 9 is a schematic view of the structure of the device of FIG. 1 mounted on the radius according to the present invention;
Fig. 10 is a perspective view showing the use state of the nested assembled type internal fixation device for distal radius intra-articular fracture provided by the present invention.
The device comprises a 1-titanium alloy steel plate, a 11-near joint surface Kerr pin hole, a 12-steel plate far-end locking hole, a 13-steel plate far-end absorbing groove, a 14-fracture fenestration jacking reset area, a 15-steel plate near-end locking groove, a 16-steel plate near-end locking area, a 17-standby Kerr pin hole, a 2-far-end absorbable module, a 21-far-end module absorbable groove, a 22-far-end module locking hole, a 23-far-end Kerr pin hole, a 24-far-end absorbable hole, a 3-near-end absorbable module, a 31-near-end module locking hole, a 4-titanium alloy screw, a 5-titanium alloy spring ring, a 6-absorbable polylactic acid ring, a 7-absorbable screw, an 8-titanium alloy locking screw and a 9-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.
As shown in fig. 1 to 10, the invention provides a nested assembled internal fixation device for fracture in distal radius joint, which comprises a titanium alloy steel plate 1 designed based on distal radius palmar anatomic morphology, a distal absorbable support rod 9 and a distal absorbable support rod 2, wherein the distal lower edge of the titanium alloy steel plate 1 can be clung to the edge of a watershed at the distal radius, a fracture fenestration roof pressure reset zone 14 corresponding to the distal radius joint surface collapse zone is arranged on the titanium alloy steel plate 1, a steel plate distal locking hole 12 is arranged at the distal side of the fracture fenestration roof pressure reset zone 14, a steel plate proximal locking groove 15 is arranged at the proximal side, the steel plate distal locking hole 12 and the steel plate proximal locking groove 15 can be respectively implanted with titanium alloy screws 4 to fix the titanium alloy steel plate 1, at least one absorbable support rod 9 is implanted in the distal radius joint surface collapse zone, the front end of the absorbable support rod 9 is positioned in the severe area of the distal radius joint surface collapse zone, the distal absorbable support rod 2 is fixedly arranged in the fracture fenestration roof pressure reset zone 14, and the bottom of the distal absorbable support rod 2 can be tightly contacted with the absorbable support rod 9 along the proximal side of the absorbable support rod 9.
In the structure, a plurality of near-joint surface Kirschner wire holes 11 are arranged on the outer edge of the far 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 far-end locking holes 12 of the steel plate, a standby Kirschner wire hole 17 is arranged on the titanium alloy steel plate 1 at the near end side of the far-end locking holes 12 of the steel plate, a standby Kirschner wire hole 17 is arranged on the titanium alloy steel plate 1 between the fracture windowing roof pressure reset area 14 and the steel plate near-end locking groove 15, a standby Kirschner wire hole 17 is arranged at the tail of the near end of the titanium alloy steel plate 1, and the standby Kirschner wire hole 17 is used for positioning the titanium alloy steel plate 1 only when required by an operation.
In the above structure, a distal module locking hole 22 is provided at the proximal end side of the distal absorbable module 2, the distal module locking hole 22 is used for implanting a titanium alloy locking screw 8 with a titanium alloy spring ring 5 to moderately pressurize and maintain close contact between the absorbable support rod 9 and the distal absorbable module 2, and distal k-wire holes 23 are provided at both sides of the distal module locking hole 22, the distal k-wire holes 23 are used for temporarily locking the distal absorbable module 2 in the fracture fenestration roof pressure reduction zone 14. The distal end outer edge of the distal end absorbable module 2 is provided with a distal end module absorbable slot 21, and a steel plate distal end absorption slot 13 is arranged on the titanium alloy steel plate 1 at the distal end side of the fracture windowing jacking reset region 14, the opposite arranged distal end module absorbable slot 21 and steel plate distal end absorption slot 13 form a distal end absorbable hole 24, and the distal end absorbable hole 24 is used for implanting absorbable screws 7 with absorbable polylactic acid rings 6 and/or titanium alloy screws 4 with absorbable polylactic acid rings 6, preferably absorbable screws 7 with absorbable polylactic acid rings 6. The fracture windowing roof pressure reset region 14 where the far-end absorbable module 2 is located in the central region of the titanium alloy steel plate 1 in the width direction, the titanium alloy steel plates 1 on two sides of the fracture windowing roof pressure reset region 14 are required to be left with titanium metal edges of 3 mm-4 mm, the widest part of the far end of the far-end absorbable module 2 is not more than 22mm, the narrowest part of the near end is not less than 12mm, the fracture windowing roof pressure reset region 14 is as large as possible, and the volume of the far-end absorbable module 2 is enlarged.
In the above structure, the steel plate proximal locking groove 15 has a U-shaped groove structure, so that the position of the titanium alloy screw 4 at the steel plate proximal locking groove 15 can be adjusted.
In the above structure, a strip-shaped steel plate proximal locking region 16 is arranged at the proximal end side of the steel plate proximal locking groove 15, the distal end side of the steel plate proximal locking region 16 is communicated with the steel plate proximal locking groove 15, the steel plate proximal locking region 16 is used for embedding a proximal absorbable module 3 with a proximal module locking hole 31, the proximal module locking hole 31 at the distal end of the proximal absorbable module 3 is communicated with the steel plate proximal locking groove 15 in an opening way, and a titanium alloy screw 4 and/or an absorbable screw 7 are implanted at the proximal module locking hole 31 to fix the proximal absorbable module 3 in the steel plate proximal locking region 16. Because the proximal end of the nested assembly type internal fixing device is a low-stress area, the more the absorbable component can be larger towards the proximal end, the edge width of the titanium alloy steel plate 1 at the two sides of the distal end of the steel plate proximal locking area 16 is 1 mm-2 mm, and the edge width of the titanium alloy steel plate 1 at the two sides of the proximal end is smaller than 1mm, so that the steel plate proximal end locking area 16 is in a strip-shaped groove gradually expanding from the distal end to the proximal end of the titanium alloy steel plate 1, and the overall integrity of the structure of the titanium alloy steel plate 1 can be maintained.
In the structure, the absorbable support rod 9 made of polylactic acid material is of a hexagonal prism structure, at the moment, the upper edge of the tail part of the absorbable support rod 9 implanted into the radius distal joint surface collapse area only needs to be in close contact with the bottom of the distal absorbable module 2, the absorbable support rod 9 serves as an osteogenesis inducing component, and the window opening of the absorbable support rod 9 is implanted at the position from the proximal end to the distal end of the distal absorbable module 2, so that the implantation angle (45-75 degrees) of the absorbable support rod 9 can be adjusted to the greatest extent, and the optimal jacking resetting effect can be achieved.
The following illustrates, by way of specific examples, the specific construction of a nested assembled internal fixation device for fractures within the distal radius joint provided by the present invention.
As shown in fig. 1-2 and 9-10, the nested assembled internal fixation device for fracture in distal joint of radius is formed by arranging four 3/4-hole near-joint surface k-pin holes 11, four steel plate distal locking holes 12, three steel plate distal absorbing grooves 13, a fracture fenestration roof pressure reset area 14, one steel plate proximal locking groove 15, one steel plate proximal locking area 16 and a plurality of spare k-pin holes 17 on the titanium alloy steel plate 1 in sequence from the distal end of the titanium alloy steel plate 1 to the proximal end direction, so that the nested assembled internal fixation device can be maximally close to the joint surface, the near-joint surface k-pin 11 implanted in the near-joint surface k-pin holes has a positioning guide function, can better control the reduction and fixation of fracture, is a special design which is convenient for fenestration roof pressure reset joint surface and can effectively maintain fixation, the distal locking hole 12 is used for implanting the steel plate proximal locking groove 15, one steel plate proximal end opening k-pin hole 11 is used for the absorption screw 4 can be prevented from being assembled with a plurality of titanium alloy absorbing screws 24 which can be absorbed by a plurality of distal end absorbing modules 24, and can be taken out from the absorbing screws 24 of the distal end can be assembled by the titanium alloy steel plate 1, the absorbable screw 7 with the absorbable polylactic acid ring 6 forms a micro-motion structure of the opposite distal absorbable module 2 and the titanium alloy steel plate 1, the fracture windowing jacking reset region 14 is used for embedding the distal absorbable module 2 and the distal absorbable module 2 is fixed by adopting the titanium alloy locking screw 8 with the titanium alloy spring ring 5, the titanium alloy locking screw 8 with the titanium alloy spring ring 5 forms a micro-motion structure of the opposite distal absorbable module 2, the steel plate proximal locking groove 15 is used for embedding the titanium alloy screw 4 for fixing the titanium alloy steel plate 1 and the position of the titanium alloy screw 4 can be adjusted, the steel plate proximal locking region 16 is used for embedding the proximal absorbable module 3 and the proximal absorbable module 3 is fixed by the absorbable screw 7 and/or the titanium alloy screw 4, the standby kirschner wire hole 17 is used for temporarily embedding kirschner wires to fix the titanium alloy steel plate 1, and the temporarily embedded kirschner wires are removed after the embedding assembly type internal fixing device is installed.
As shown in fig. 3 and 9-10, the distal absorbable module 2 is formed by arranging three open distal module absorbable slots 21, one distal module locking hole 22 and two distal k-wire holes 23 on the distal absorbable module 2 in sequence from the distal end of the titanium alloy steel plate 1 to the proximal direction, the opposite distal module absorbable slots 21 and the steel plate distal absorbing slots 13 form distal absorbable holes 24 for implanting absorbable screws 7 with absorbable polylactic acid rings 6, the micro-motion structure formed by the absorbable screws 7 with the absorbable polylactic acid rings 6 can avoid re-collapse after secondary intra-operative fixation, and the absorbable polylactic acid rings 6 and the absorbable screws 7 have osteogenic effect, the distal module locking holes 22 are used for implanting titanium alloy locking screws 8 with titanium alloy spring rings 5 for moderately pressurizing and maintaining close contact between the absorbable support rods 9 and the distal absorbable module 2, and the distal k-wire holes 23 are used for temporarily locking the distal absorbable module 2 in the fenestration and compression reduction region 14.
As shown in fig. 4, 9-10, the proximal absorbable module 3 is provided with four proximal module locking holes 31 in the proximal absorbable module 3, wherein the proximal module locking holes 31 at the distal end of the proximal absorbable module 3 are open to the steel plate proximal locking groove 15.
As shown in fig. 5-6 and 9-10, the absorbable support rod 9 made of polylactic acid material is in a hexagonal prismatic structure, the absorbable support rod 9 is used as an osteogenesis inducing component to be implanted in the subsidence area of the distal joint surface of the radius, the front end of the absorbable support rod 9 is positioned in the severe subsidence area of the distal joint surface of the radius, and the distal absorbable module 2 is positioned only by abutting any edge on the bottom surface of the distal absorbable module 2 on the tail of the absorbable support rod 9.
The partially opened absorbable polylactic acid ring 6 shown in fig. 7 and 9-10 is internally threaded, and is locked by the distal absorbable hole 24 formed by the steel plate distal absorption groove 13 of the titanium alloy steel plate 1 and the distal module absorbable groove 21 of the distal absorbable module 2, so as to realize micro-motion connection, 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.
The titanium alloy spring ring 5 with partial openings as shown in fig. 8-10 is internally provided with threads, and forms a micro-motion structure of the relative far-end absorbable module 2 together with the titanium alloy locking screw 8, so as to realize micro-motion connection of the far-end absorbable module 2, 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 broken end gradually disappears along with fracture healing.
In the above structure, the micro-motion structure gradually generates micro-motion along with the degradation of the local absorbable material, and can promote fracture healing at the later stage of fracture healing.
The nested assembled internal fixing device for the distal radius intra-articular fracture is further explained in the following eight aspects of special structure, material selection, prevention of the locking nail from entering the wrist joint, stress change and fracture healing, osteogenesis induction, prevention of the damage of metal materials to the joint, modularized design, universal locking function and the like.
1. The nested assembled internal fixing device has the special structure that the nested assembled internal fixing device is provided with the super-distal fixing design of the near-joint surface Kirschner pin hole 11, is convenient for windowing, jacking and resetting the joint surface, can effectively maintain fixation, and is beneficial to precisely resetting and fixing the fracture part.
2. The material selection is that the nested assembly type 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 naturally degraded by a human body along with the time, so that the requirement on secondary operation of the implant is reduced.
3. The embedded assembly type internal fixing device can effectively prevent the titanium alloy screw 4 implanted in the steel plate distal locking hole 12 from being driven into the wrist joint by the design of clinging to the edge of the distal radial watershed, thereby reducing further damage to the joint.
4. Stress change and fracture healing, namely, the stress of the titanium alloy steel plate 1 can change in the fracture healing stage due to the absorption of the polylactic acid absorbable material at different composite parts, and the design of the composite structure is more in line with the mechanical environment of fracture healing.
5. Osteogenesis inducing effect by adding a part of absorbable polylactic acid material at the bone defect, which has osteogenesis inducing effect (absorbable polylactic acid ring 6 and absorbable screw 7 matched with hexagonal absorbable support rod 9), and is helpful for healing fracture part.
6. The damage of the metal material to the joint is avoided by using the absorbable components such as the distal absorbable module 2, the proximal absorbable module 3, the absorbable polylactic acid ring 6, the absorbable screw 7, the absorbable support rod 9 and the like, so that 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 2 nested design, and the near end adopts a near end absorbable module 3 nested design, so that the implant is more flexible, and the damage to surrounding tissues is reduced.
8. The universal locking function is that the hexagonal absorbable support rod 9 and the titanium alloy spring ring 5 are configured, threads are arranged in the titanium alloy spring ring 5, and the universal locking function can be realized by matching with the titanium alloy locking screw 8 to lock the absorbable support rod 9 in a universal way, so that the fracture part is fixed to the greatest extent.
When the nested assembled internal fixing device for distal radius intra-articular fracture is used, firstly, the distal radius fracture is aligned and reset, after reset, the broken end cortex is kept relatively stable, the assembled absorbable polylactic acid ring 6 and the titanium alloy steel plate 1 of the proximal absorbable module 3 are tightly attached to the bone surface, the lower edge of the distal end of the titanium alloy steel plate 1 is ensured to be tightly attached to the edge of a watershed at the distal radius, the Kirschner pin hole 11 of the proximal joint surface is tightly attached to the joint surface and implanted with 2-3 Kirschner pins of the proximal joint surface, the implantation length of the Kirschner pins of the proximal joint surface is not more than half the depth of the longitudinal bone cortex of the distal end, the Kirschner pins are in perspective close contact with the joint surface and moderately prized and reset, 2-4 half-depth titanium alloy screws 4 (parallel joint surfaces) are implanted through the locking holes 12 of the steel plate, after moderate adjustment, one titanium alloy screw 4 is implanted through the locking groove 15 of the steel plate, the distal absorbable module 2 and the titanium alloy spring 5 are assembled, the proximal absorbable module is temporarily not mounted, the top-contact area 14 of the sliding window is tightly pressed against the joint surface, the distal end supporting bar is tightly pressed against the distal end of the bone supporting rod, the distal end supporting rod is in contact with the distal end of the distal end supporting area 2, and the distal end supporting rod is in a proper contact with the diameter of the supporting area 9, and the distal end of the distal end is required to be tightly assembled, and the end of the supporting rod is only 9 is in a hexagonal-shaped, and the supporting the distal end supporting area is required to be tightly and is in contact with the end of the distal end of the absorption area, and is required to be tightly attached to be deformed, and is deformed and deformed, the steel plate distal end absorbing groove 13 with the absorbable polylactic acid ring 6 and the distal end module absorbable groove 21 form three distal end absorbable holes 24, the three absorbable screws 7 are respectively implanted into the distal end absorbable holes 24 to maintain the jacking and resetting, then the titanium alloy locking screws 8 are implanted into the distal end module locking holes 22 of the embedded titanium alloy spring ring 5 positioned between two distal end Kelvin pinholes 23, the absorbable support rod 9 is moderately pressurized and maintains the close contact between the absorbable support rod and the distal end absorbable module 2, and finally the absorbable screws 7 and/or the titanium alloy screws 4 with proper lengths are implanted into the proximal end module locking holes 31 to fix the proximal end absorbable module 3. After the end, the proximal k-wire implanted in the proximal k-wire hole 11 and the auxiliary k-wire implanted in the distal k-wire hole 23 are removed.
The nested assembled internal fixing device provided by the invention adopts a modularized design, the far end of the titanium alloy steel plate 1 adopts a far end absorbable module 2 to be nested in a fracture windowing jacking reset area 14 of the titanium alloy steel plate 1, a titanium alloy locking screw 8 with a titanium alloy spring ring 5 is implanted for locking, an absorbable screw 7 with an absorbable polylactic acid ring 6 is configured for fixing, a hexagonal absorbable support rod 9 is configured in the fracture windowing jacking reset area below the far end absorbable module 2, and the titanium alloy spring ring 5 internally provided with threads is configured with the titanium alloy locking screw 8 for locking the absorbable support rod 9, has a universal locking function and can fix fracture to the greatest extent. The titanium alloy steel plate 1 is made of titanium alloy materials and is used for providing sufficient strength and stability, the special structure of the titanium alloy steel plate 1 designed based on the distal radius palm side anatomical morphology can be clung to the distal radius watershed edge, the risk that the titanium alloy screw 4 is driven into the distal radius wrist joint is effectively avoided, the bone blocks at the distal radius are fixed to the maximum extent, the distal absorbable module 2, the proximal absorbable module 3, the absorbable polylactic acid ring 6, the absorbable screw 7 and the absorbable support rod 9 are made of polylactic acid absorbable materials, the polylactic acid absorbable materials are compounded on the titanium alloy steel plate 1, the reduction of the use of metal materials is realized, the adopted polylactic acid absorbable materials are degraded in the body and gradually replaced by human tissues, the pain and the economic burden of a patient are further reduced, and the internal fixing device is properly added with part of the polylactic acid absorbable materials at the bone defect position, and the absorbable support rod 9 made of the materials is used as an osteogenesis inducing component, has osteogenesis inducing effect, and can promote healing of fracture parts.
The nested assembled internal fixing device provided by the invention has the design of ultra-far end fixing, convenient windowing and pushing the reset joint surface and effective maintenance fixation, is constructed by adopting the nested assembly and micro-motion internal fixing technology, can be gradually degraded in the fracture healing process, and reduces the burden on patients. The absorbable part made of polylactic acid material is nested and assembled on the titanium alloy steel plate 1, so that the metal material is reduced, meanwhile, the absorbable material is added into a local component of the locking structure for improvement, along with the absorption of degradable materials at different composite parts, the stress of the steel plate which is internally fixed is changed in the fracture healing stage, a biological fixing steel plate which can slightly move and is more in line with the fracture healing mechanical environment is provided, in addition, an absorbable support rod 9 made of polylactic acid material is properly added at a bone defect part to have an osteogenesis induction effect, the nested and assembled internal fixing device is simple and easy to design, has better structural support, avoids the re-collapse of a wrist joint and is beneficial to the rapid healing of the fracture part. The nested assembled internal fixing device solves the problems of unstable fixation, easy displacement and the like in the traditional treatment method, and has wide application prospect and important social significance.
The embodiments are only used to illustrate the technical scheme of the present invention, but not to limit the technical scheme, and although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical scheme described in the foregoing embodiments can be modified or some or all technical features thereof can be equivalently replaced, and the modification or replacement does not deviate the essence of the corresponding technical scheme from the technical scheme of the embodiments of the present invention. The technology not related to the invention can be realized by the prior art.
Claims (8)
1. A nested assembled internal fixing device for distal radius intra-articular fracture is characterized by comprising a titanium alloy steel plate (1) designed based on distal radius palm side anatomy, a distal absorbable support rod (9) and a distal absorbable support module (2), wherein the lower distal edge of the titanium alloy steel plate (1) can be clung to the edge of a watershed at the distal radius, a fracture fenestration top pressure reset area (14) corresponding to a distal radius joint surface collapse area is arranged on the titanium alloy steel plate (1), a steel plate distal locking hole (12) is arranged at the distal side of the fracture fenestration top pressure reset area (14), a steel plate proximal locking groove (15) is arranged at the proximal side, at least one absorbable support rod (9) is implanted in the distal radius joint surface collapse area, the front end of the absorbable support rod (9) is positioned in the severe collapse area of the distal radius joint surface area, the distal absorbable support module (2) is fixedly arranged in the fracture fenestration top pressure reset area (14), the bottom of the distal absorbable module (2) is closely contacted with the absorbable support rod (9), a distal alloy locking screw (22) is arranged at the distal end of the distal absorbable support rod (9) along the fracture fenestration top pressure reset area, a distal end locking hole (22) is used for being implanted into a distal titanium alloy locking screw (8), the method is characterized in that the close contact between the absorbable support rod (9) and the distal absorbable module (2) is moderately pressurized and maintained, two sides of the distal module locking hole (22) are provided with distal Kirschner pinholes (23), the distal Kirschner pinholes (23) are used for temporarily locking the distal absorbable module (2) in the fracture fenestration jacking and resetting region (14), the distal outer edge of the distal absorbable module (2) is provided with a distal module absorbable groove (21), the titanium alloy steel plate (1) at the distal side of the fracture fenestration jacking and resetting region (14) is provided with a steel plate distal absorption groove (13), the opposite distal module absorbable groove (21) and the steel plate distal absorption groove (13) form a distal absorbable hole (24), and the distal absorbable hole (24) is used for implanting absorbable screws (7) with absorbable polylactic acid rings (6) and/or titanium alloy screws (4) with absorbable polylactic acid rings (6).
2. The nested assembled internal fixation device for distal intra-articular fractures of the radius of claim 1, wherein the upper edge of the tail of the absorbable support rod (9) is located at the proximal to distal 1/3 position of the distal absorbable module (2).
3. The nested assembled internal fixation device for distal radius intra-articular fracture according to claim 1 or 2, wherein the implantation angle of the absorbable support rod (9) is 45 ° -75 °, and the absorbable support rod (9) as an osteogenic induction member adopts a hexagonal cross-sectional structure.
4. The nested assembled internal fixation device for distal radius intra-articular fracture of claim 1, wherein the width of the distal absorbable module (2) is 12-22 mm, and the edge width of the titanium alloy steel plates (1) at two sides of the distal absorbable module (2) is 3-4 mm.
5. The nested assembled internal fixation device for the distal radius intra-articular fracture of claim 1, wherein the distal locking hole (12) and the proximal locking groove (15) of the steel plate can be respectively implanted with titanium alloy screws (4) to fix the titanium alloy steel plate (1), and the proximal locking groove (15) of the steel plate has a U-shaped groove structure, so that the position of the titanium alloy screws (4) at the proximal locking groove (15) of the steel plate can be adjusted.
6. The nested assembled internal fixation device for the distal radius intra-articular fracture according to claim 1 or 5, wherein a plurality of near-articular surface Kirschner wires (11) are arranged on the outer edge of the distal end of the titanium alloy steel plate (1), the near-articular surface Kirschner wires (11) which are open towards the outer side are used for being implanted into the near-articular surface Kirschner wires, the near-articular surface Kirschner wires are used for temporarily positioning the titanium alloy steel plate (1) and guiding titanium alloy screws (4) implanted at the distal locking holes (12) of the steel plate, a standby Kirschner wire hole (17) is formed in the titanium alloy steel plate (1) on the proximal side of the distal locking holes (12), a standby Kirschner wire hole (17) is formed in the titanium alloy steel plate (1) between the fracture fenestration jacking reset area (14) and the proximal locking groove (15) of the steel plate, and a standby Kirschner wire hole (17) is formed in the proximal tail of the titanium alloy steel plate (1).
7. The nested assembled internal fixation device for radius distal joint fracture according to any one of claims 1,2 and 5, wherein the proximal side of the proximal locking groove (15) of the steel plate is provided with a strip-shaped proximal locking region (16) of the steel plate, the distal side of the proximal locking region (16) of the steel plate is communicated with the proximal locking groove (15) of the steel plate, the proximal locking region (16) of the steel plate is used for being embedded into a proximal absorbable module (3) with a proximal module locking hole (31), the proximal module locking hole (31) at the distal end of the proximal absorbable module (3) is open and communicated with the proximal locking groove (15) of the steel plate, and a titanium alloy screw (4) and/or an absorbable screw (7) are implanted at the proximal module locking hole (31) to fix the proximal absorbable module (3) in the proximal locking region (16) of the steel plate.
8. The nested assembled internal fixation device for distal radius intra-articular fracture of claim 7, wherein the rim width of the titanium alloy steel plates (1) on both sides of the distal end of the steel plate proximal locking zone (16) is 1 mm-2 mm, and the rim width of the titanium alloy steel plates (1) on both sides of the proximal end is less than 1mm, so that the steel plate proximal locking zone (16) presents a strip-shaped groove gradually expanding from the distal end to the proximal end of the titanium alloy steel plates (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411171120.8A CN119033455B (en) | 2024-08-26 | 2024-08-26 | Nested assembly internal fixation device for intra-articular distal radius fractures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411171120.8A CN119033455B (en) | 2024-08-26 | 2024-08-26 | Nested assembly internal fixation device for intra-articular distal radius fractures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN119033455A CN119033455A (en) | 2024-11-29 |
| CN119033455B true CN119033455B (en) | 2025-02-28 |
Family
ID=93575361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411171120.8A Active CN119033455B (en) | 2024-08-26 | 2024-08-26 | Nested assembly internal fixation device for intra-articular distal radius fractures |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN119033455B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103861156A (en) * | 2014-03-17 | 2014-06-18 | 天津理工大学 | Bone fixing apparatus combining degradable bone plate and non-degradable bone nail |
| CN113967060A (en) * | 2021-10-22 | 2022-01-25 | 上海市第六人民医院 | Partially-absorbable bone fracture plate constructed by 3D printing technology |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5571193A (en) * | 1992-03-12 | 1996-11-05 | Kampner; Stanley L. | Implant with reinforced resorbable stem |
| US8821580B2 (en) * | 2007-09-13 | 2014-09-02 | Swiss Ortho, Llc | System for making a bone repair |
| CN202386761U (en) * | 2011-10-26 | 2012-08-22 | 张英泽 | Bridge-type bone fracture plate with better fixation effect |
| CN208926562U (en) * | 2017-11-21 | 2019-06-04 | 上海市第五人民医院 | Dynamic state screw |
| CN209074836U (en) * | 2018-01-29 | 2019-07-09 | 中国医学科学院北京协和医院 | Biodegradation material fracture of distal radius fixed system |
| EP3868313B1 (en) * | 2020-02-20 | 2023-11-01 | Globus Medical, Inc. | Distal radius stabilization system |
| CN213525424U (en) * | 2020-08-29 | 2021-06-25 | 大连大学附属中山医院 | A degradable zinc alloy bone plate for ulna and radius fractures |
| CN219021479U (en) * | 2022-09-15 | 2023-05-16 | 中国人民解放军总医院第四医学中心 | Distal Radius Volar Plate |
-
2024
- 2024-08-26 CN CN202411171120.8A patent/CN119033455B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103861156A (en) * | 2014-03-17 | 2014-06-18 | 天津理工大学 | Bone fixing apparatus combining degradable bone plate and non-degradable bone nail |
| CN113967060A (en) * | 2021-10-22 | 2022-01-25 | 上海市第六人民医院 | Partially-absorbable bone fracture plate constructed by 3D printing technology |
Also Published As
| Publication number | Publication date |
|---|---|
| CN119033455A (en) | 2024-11-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204379413U (en) | First sole of the foot wedge joint dorsal plate | |
| KR101699694B1 (en) | Pediatric long bone support or fixation plate | |
| US8486072B2 (en) | Implant for treating a proximal fracture of the humerus | |
| US9265528B2 (en) | Orthopedic fixation systems and methods | |
| US9320553B2 (en) | Compressive distal humerus plating system | |
| US7645279B1 (en) | Bone fixation method | |
| GB2473874A (en) | Surgical plate and nail implant | |
| US20150366594A1 (en) | Articular fracture fixation system and method | |
| EP4119078A1 (en) | Screw assembly for bone fixation, and bone fixation device | |
| KR20050123111A (en) | Hybrid interlocking proximal femoral fracture fixation | |
| CN104873256A (en) | Splicing device for pulling close fibulas on two sides after fibula section cutting osteotomy | |
| CN204484283U (en) | A kind ofly promote the bionical inner fixing device of the porous of union of fracture | |
| CN119033455B (en) | Nested assembly internal fixation device for intra-articular distal radius fractures | |
| CN215384910U (en) | Biological femoral stem prosthesis and periprosthetic fracture fixing system | |
| RU128482U1 (en) | LOCK FOR OSTEOSYNTHESIS OF FEMAL PROXIMAL FRACTURES | |
| CN100584284C (en) | A kind of expansion expansion intramedullary nail | |
| RU2762949C1 (en) | Long bone fracture reposition system | |
| CN108210054A (en) | A memory alloy femoral bone plate | |
| CN115998398B (en) | bone fixation device | |
| CN118902584B (en) | Nested assembly internal fixation device for the lateral tibial plateau | |
| CN209996459U (en) | Proximal femur fracture plate | |
| CN211658313U (en) | Component of a bone fixation system for the neck of a femur and bone fixation system | |
| CN205107863U (en) | Locking bone plate is dissected to wall behind general type acetabular bone | |
| CN204708955U (en) | Further after a kind of fibula section cuts osteotomy the plug assembly of both sides fibula | |
| CN109620381B (en) | Proximal Femoral Plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |