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WO2022080752A1 - Clou métallique pour le traitement d'une fracture - Google Patents

Clou métallique pour le traitement d'une fracture Download PDF

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Publication number
WO2022080752A1
WO2022080752A1 PCT/KR2021/013752 KR2021013752W WO2022080752A1 WO 2022080752 A1 WO2022080752 A1 WO 2022080752A1 KR 2021013752 W KR2021013752 W KR 2021013752W WO 2022080752 A1 WO2022080752 A1 WO 2022080752A1
Authority
WO
WIPO (PCT)
Prior art keywords
fixture
longitudinal direction
rod
fixing
fixing body
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.)
Ceased
Application number
PCT/KR2021/013752
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English (en)
Korean (ko)
Inventor
이세엽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KOREA NUCLEAR ENGR CO Ltd
Original Assignee
KOREA NUCLEAR ENGR CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by KOREA NUCLEAR ENGR CO Ltd filed Critical KOREA NUCLEAR ENGR CO Ltd
Publication of WO2022080752A1 publication Critical patent/WO2022080752A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • A61B17/74—Devices for the head or neck or trochanter of the femur
    • A61B17/742—Devices for the head or neck or trochanter of the femur having one or more longitudinal elements oriented along or parallel to the axis of the neck
    • 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
    • A61B17/72—Intramedullary devices, e.g. pins or nails
    • A61B17/7216—Intramedullary devices, e.g. pins or nails for bone lengthening or compression
    • 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
    • A61B17/74—Devices for the head or neck or trochanter of the femur
    • A61B17/742—Devices for the head or neck or trochanter of the femur having one or more longitudinal elements oriented along or parallel to the axis of the neck
    • A61B17/748—Devices for the head or neck or trochanter of the femur having one or more longitudinal elements oriented along or parallel to the axis of the neck with means for adapting the angle between the longitudinal elements and the shaft axis of the femur
    • 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
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/844—Fasteners therefor or fasteners being internal fixation devices with expandable anchors or anchors having movable parts
    • 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
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/846—Nails or pins, i.e. anchors without movable parts, holding by friction only, with or without structured surface

Definitions

  • the present invention relates to a metal chisel for the treatment of fractures, and more particularly, to a metal chisel for the treatment of fractures that can finely control the distance between fractured parts and enable torsion correction of the upper and lower parts of the fracture to facilitate osseointegration.
  • Human bones are mostly made of calcium phosphate called hydroxyapatite, and when a large force is applied, it is easy to fracture.
  • Fractures are divided into open and closed fractures according to their appearance, comminuted fractures and segmental fractures depending on the fracture state. It has to be done so that the shape and function can be maintained as before, but it takes a considerable amount of time to coalesce, and there are many cases where the osseointegration does not work well.
  • delayed union refers to a state in which bone union is delayed despite treatment for a period sufficient to allow fractures to coalesce, usually 3 to 6 months, and nonunion means at least 9 months after injury.
  • non-union fractures it means a case in which no signs of union are seen on radiographic examination for 3 months. It means that the back occurs, and it can lead to persistent pain, cosmetic problems, and functional impairment.
  • Primary osseointegration refers to a case in which a compressive force between osseous fragments is fixed using a rigid structure, and it refers to a mechanism in which osteoblasts form bone tissue and coalesce in the place where the osteoclast cutting cone has passed without callus formation.
  • Secondary osseointegration refers to a mechanism in which a callus is formed first and then undergoes remodeling process when it is fixed with a flexible instrument such as a cross-linked metal plate or intramedullary medulla, and when there is a minute movement between the osseous fragments, the callus is formed.
  • Surgical fixation of fractured bones includes a method using an external fixation device, a method in which a metal plate is placed on the bone surface and fixed with a metal screw, and a method in which a metal chisel is inserted into the bone and fixed with a metal screw.
  • Metal tablets are mainly suitable for fixing thick and long bones such as femurs and tibias, and as a conventional example, intramedullary metal tablets for fracture treatment disclosed in Korean Utility Model Registration No. 20-0309570 are known.
  • the metal tablet of the prior art is made of a hollow or rod-shaped body formed long in the longitudinal direction, a plurality of fixing holes perforated obliquely at a predetermined angle are formed in the upper portion of the body, and a plurality of fixing holes are formed in the lower portion in the horizontal direction.
  • the fixing hole is formed, and the body of the metal tablet is inserted into the bone marrow, and the upper and lower portions of the fracture site are fixed with occlusal screws using a plurality of fixing holes.
  • the bone position is changed due to a severe fracture, the bone is adjusted to its original position and fixed with a metal chisel. height, and if the deformation is severe, there is a problem that it needs to be fixed again through reoperation.
  • the present invention is to solve the problems of the prior art as described above, and its purpose is to be able to fine-tune the gap between the fracture site to a good fusion interval even after fixing the upper and lower bones of the fracture site, and torsional deformation at the fracture site
  • An object of the present invention is to provide a metal nail for fracture treatment that can be fixed by positioning it in its original state even when this occurs.
  • the present invention is a metal tablet for the treatment of fractures that can easily and frequently adjust the gap adjustment and torsion angle of the fracture site without reoperation, so that osseointegration is well achieved and deformities or functional disorders caused by positional deformation during bone restoration can be prevented. is to provide
  • the present invention is a metal tablet for fracture treatment comprising a rod-shaped fixture having a plurality of fixing holes formed therein, and an occlusal screw for fixing the fixture to a bone through the fixing holes, the high
  • the stag is formed by separating the upper and lower fixtures in the longitudinal direction to fit each other and connect, and a length adjusting means is provided between the upper and lower fixtures to finely adjust the lower fixture to the upper fixture in the longitudinal direction. It is characterized by metal tablets for the treatment of fractures that are designed to be controlled.
  • the length adjusting means is installed between the upper fixed body and the lower fixed body, and the upper end is supported on the upper fixed body to rotate with the longitudinal direction as the central axis, and the lower end is on the lower fixed body.
  • It consists of a central rotating body screw-fitted in the longitudinal direction, and a length adjusting rod for rotating the central rotating body, wherein the length adjusting rod is disposed at a position spaced apart from the central axis of the central rotating body and the end is located close to the central rotating body,
  • the head is located at the upper end of the upper fixture, and the end positioned close to the central rotating body is equipped with a gear tooth, which is characterized by a metal chisel for fracture treatment that is designed to mesh with the gear teeth formed in the circumferential direction on the outer surface of the central rotating body.
  • the length adjusting means is made of a length adjustment rod and a screw hole arranged at a position spaced apart from the central axis of the upper and lower fixture, the screw hole is centered in the longitudinal direction of the lower fixture It is formed with an axis, and the length adjusting rod is characterized by a metal nail for fracture treatment in which a screw portion for screw-fitting with the screw hole is formed at the lower end and the head of the upper end is positioned at the upper end of the upper fixture.
  • the torsion control means installed between the upper and lower fixtures and rotating the lower fixture by a predetermined angle with respect to the upper fixture with the longitudinal direction of the upper and lower fixtures as the central axis. It is characterized by a metal tablet for the treatment of fractures further comprising a.
  • the torsion control means is made of a torsion control rod having a gear tooth formed in the circumferential direction with respect to the central axis of the lower fixture, and a gear tooth meshed with the gear tooth, the head of the torsion control rod Boo is characterized by a metal nail for fracture treatment that is positioned on the top of the upper fixture.
  • a wire guide hole is formed in the longitudinal direction at the center of the upper fixture and the lower fixture, and the length adjustment rod and the torsion adjustment rod are installed at a position deviated from the wire guide hole, and the length adjustment rod and the torsion A metal tablet for fracture treatment, characterized in that the head of the control rod does not protrude from the upper surface of the upper fixture, and the head is exposed to the upper surface of the upper fixture and has an adjustment groove formed to facilitate rotation.
  • the gap between the fracture site after fixing the fractured bone is spaced at an interval where osseointegration is well achieved. It can maintain, and also has the effect of preventing deformity or dysfunction after restoration by correcting the state of torsion of the bone.
  • the present invention provides a simple incision that exposes the upper end of the fixture without re-operation and fixing again even if the position of the bone fixed by the fixture is changed as the longitudinal and torsional direction adjustment work of the fixture is performed at the upper end of the fixture It can be easily adjusted with just one control, which has the effect of reducing the cost and time due to re-adjustment.
  • FIG. 1 is a front view showing the state of use of a metal tablet according to the present invention.
  • Figure 2 is a side view showing the longitudinal direction and torsion direction adjustment state of the metal nail according to the present invention.
  • Figure 3 is an exploded perspective view of a metal tablet according to a first embodiment of the present invention.
  • Figure 4 is an enlarged cross-sectional view of the main part of the metal nail according to the first embodiment of the present invention.
  • Fig. 5 is a cross-sectional view of an essential part of Fig. 4;
  • FIG. 6 is a cross-sectional view of a main part of a metal nail according to a second embodiment of the present invention.
  • Fig. 7 is a cross-sectional view of an essential part of Fig. 6;
  • FIG. 8 is a plan view of a metal crystal according to a second embodiment of the present invention.
  • 1 and 2 is a state diagram showing an example of applying the metal chisel according to the present invention to a fractured femur. (11,12) is formed.
  • the fixture 10 After making a hole in the upper end of the femur and inserting the fixture 10 into the bone marrow, the fixture 10 through the upper and lower fixing holes 11 and 12 of the fixture 10 with an occlusal screw 13. and to fix bones.
  • the fixed body 10 is separated and formed into an upper fixed body 20 and a lower fixed body 30 in the longitudinal direction and connected to each other by fitting, the upper fixed body 20 and the lower fixed body
  • a length adjustment means and a torsion adjustment means are provided between the 30 and the lower fixture 30 with respect to the upper fixture 20 in the longitudinal direction and the torsion direction (the direction of rotation with the longitudinal direction of the fixture as the central axis) to be fine-tuned.
  • FIGS. 3 to 5 show a first embodiment of the present invention, and as shown, the rod-shaped fixture 10 is divided into approximately two equal parts, and the upper fixture 20 and the lower fixture ( 30), a fitting hole 21 is formed in the lower portion of the upper fixture 20 so that the upper portion of the lower fixture 30 is fitted in the longitudinal direction.
  • the length adjusting means includes a central rotating body 40 and a length adjusting rod 50 which are installed inside between the upper fixed body 20 and the lower fixed body 30 .
  • the central rotating body 40 is supported so that the upper end rotates in the longitudinal direction on the upper fixed body 20 as the central axis, and the lower end has a threaded part 41 formed therein, and the lower fixed body 30 has a threaded part 31 formed in the longitudinal direction. ) and screwed together.
  • the rotation support configuration of the central rotating body 40 and the upper fixed body 20 combines the C-shaped ring 42 to the central rotating body 40 and the C-shaped ring 4 to the upper fixed body 20 .
  • the length adjustment rod 50 is for rotating the central rotating body 40, the end is located close to the central rotating body 40, the head part 51 is located at the upper end of the upper fixed body 20, the central rotating body A gear tooth 52 is provided at the end located close to the 40 so as to engage with the gear tooth 43 formed in the circumferential direction on the outer surface of the central rotating body 40 .
  • wire guide holes 20a and 30a are formed in the longitudinal direction, and the length adjustment rod 50 is deviated from the wire guide hole 20a. It is installed in the position, and the head 51 of the length adjustment rod 50 does not protrude from the upper surface of the upper fixed body 20 , and the head 51 is exposed to the upper surface of the upper fixed body 20 . It is preferable to form an adjustment groove (51a) for easy rotation.
  • the central rotating body 40 is the upper part by the gear teeth 52 of the length adjusting rod 50 and the gear teeth 43 of the central rotating body 40. It is rotated about the central axis with respect to the fixed body 20, whereby the lower fixed body 30 is screwed by the screw parts 31 and 41 of the central rotating body 40 and the lower fixed body 30. It moves slightly in the longitudinal direction.
  • the torsion control means of the present invention is installed between the upper fixed body 20 and the lower fixed body 30, and the upper height with the longitudinal direction of the upper fixed body 20 and the lower fixed body 30 as the central axis. It is configured to rotate the lower fixed body 30 by a predetermined angle with respect to the static body 20, and the gear teeth 32 formed in the circumferential direction (torsional direction) about the central axis in the lower fixed body 30, and the gear teeth A torsion control rod (60) having a gear tooth (61) engaged with the (32) is provided.
  • the head 62 of the torsion control rod 60 is located at the upper end of the upper fixed body 20, and the lower fixed body 30 has an arc-shaped rectangular hole 33 in which the gear part 32 is formed. It is formed so that the lower fixed body 30 can be rotated at a predetermined angle with respect to the upper fixed body 20 .
  • the torsion control rod 60 is installed at a position deviated from the wire guide hole 20a of the upper fixture 20 , and the head 62 of the torsion control rod 60 is the upper fixture 20 . It is preferable not to protrude from the upper surface, and to form an adjustment groove 62a in the head 62 that is exposed to the upper surface of the upper fixture 20 to facilitate rotation.
  • the head portion 51 of the length adjustment rod 50 and the head portion 52 of the torsion adjustment rod 60 are coupled to the upper fixture 20 by C-shaped rings 53 and 63, respectively. This allows the length adjustment rod 50 and the torsion adjustment rod 60 to rotate in place.
  • wire guide holes 20a and 30a are formed in the longitudinal direction, and the length adjustment rod 50 is deviated from the wire guide hole 20a. It is installed in the position, and the head 51 of the length adjustment rod 50 does not protrude from the upper surface of the upper fixed body 20 , and the head 51 is exposed to the upper surface of the upper fixed body 20 . It is preferable to form an adjustment groove (51a) for easy rotation.
  • the length adjusting rod 50 of the length adjusting means is rotated in the forward and reverse directions
  • the central rotating body 40 is rotated about the central axis in the longitudinal direction by the gear teeth 52 of the length adjustment rod 50 and the gear teeth 43 of the central rotating body 40, and the screw part of the central rotating body 40 Since (41) is screw-fitted to the screw part 31 of the lower fixture 30, the lower fixture 30 according to the rotation direction of the central rotation body 40 is fine in the longitudinal direction with respect to the upper fixture 20 is moved
  • non-union or delayed union can be prevented by finely adjusting the gap (H) for the fracture site and maintaining it at an interval suitable for union.
  • the present invention rotates the torsion control rod 60 of the torsion control means in the forward and reverse directions as in FIGS. 4 and 5 , the gear teeth 61 of the torsion control rod 60 and the gear teeth of the lower fixture 30 .
  • the lower fixed body 30 is rotated by a predetermined angle about the axial axis with respect to the upper fixed body (20).
  • the torsion control rod 60 can be selectively rotated forward and backward to adjust it to its original position, thereby causing malformation or dysfunction due to malunion. can prevent
  • the adjusting positions of the length adjusting means and the torsion adjusting means are located at the upper end of the upper fixture 20, after fixing the femur by the fixture 10, when the position of the fractured upper and lower bones is deformed
  • Deformation can be adjusted with only a small incision to expose the head 51 of the length control rod 50 or the head 62 of the torsion control rod 60, so that the fixture 10 is fixed again through reoperation in the prior art It is significantly simpler and can reduce cost and effort compared to what needs to be done.
  • FIG. 6 to 8 show a second embodiment of the present invention.
  • the first embodiment only the configuration of the length adjusting means is changed, and the configuration of the torsion adjusting means is the same. Accordingly, the same reference numerals are assigned to the configuration of the torsion control means, and overlapping configuration and operation descriptions are omitted.
  • the length adjusting means in the second embodiment includes a screw hole 131 formed in the lower fixture 30 with the longitudinal direction as a central axis, and the screw hole 131 installed in the upper fixture 20 and provided at the lower end of the screw hole.
  • a screw portion 151 for screw-fitting with the 131 is formed, and the head portion 152 of the upper end is made of a length adjustment rod 150 positioned at the upper end of the upper fixture 20 .
  • the head 152 of the length adjustment rod 150 is coupled to the upper fixture 20 by a C-shaped ring 153 so that the length adjustment rod 150 rotates in place.
  • the through hole 121 of the upper fixture 20 through which the length adjustment rod 150 penetrates in the longitudinal direction is a rectangle formed long in the circumferential direction with the central axis of the upper fixture 20 as the center.
  • wire guide holes 20a and 30a are formed in the longitudinal direction, and the length adjustment rod 150 and the torsion adjustment rod 60 are the wires. It is installed at a position out of the guide hole 20a, and the heads 152 and 62 of the length control rod 150 and the torsion control rod 60 do not protrude from the upper surface of the upper fixture 20, and the head It is preferable to form adjustment grooves 152a and 62a that are exposed to the upper surface of the upper fixture 20 to facilitate rotation in the portions 152 and 62 .
  • This second embodiment can exhibit the same effects as those of the first embodiment described above.
  • screw hole 151 screw part

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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)
  • Neurology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

La présente invention concerne un clou métallique pour le traitement d'une fracture, permettant, même après avoir fixé les os supérieurs et inférieurs d'un foyer de fracture, l'ajustement précis d'un écart dans le foyer de fracture pour avoir un intervalle qui permet de bien réaliser la consolidation, et qui permet, même lorsque la déformation en torsion se produit dans un foyer de fracture, le positionnement et la fixation à l'état initial, et qui, en permettant l'ajustement d'un écart dans un foyer de fracture et l'ajustement pratique d'un angle de torsion à n'importe quel moment sans nouvelle opération, permet à la consolidation osseuse d'être bien obtenue et peut prévenir les déformations ou les dysfonctionnements dus à la déformation de la position lors de la restauration des os. Le clou métallique pour le traitement d'une fracture de la présente invention comprend : un corps de fixation en forme de tige comportant une pluralité de trous de fixation ; et des vis de verrouillage pour fixer le corps de fixation aux os à travers les trous de fixation, le corps de fixation étant divisé dans la direction longitudinale pour former un corps de fixation supérieur et un corps de fixation inférieur, qui sont emboîtés l'un dans l'autre et reliés l'un à l'autre, et un moyen de réglage de longueur et un moyen de réglage de torsion sont disposés entre le corps de fixation supérieur et le corps de fixation inférieur, de manière à ajuster avec précision le corps de fixation inférieur par rapport au corps de fixation supérieur dans la direction longitudinale, et de manière à faire tourner le corps de fixation inférieur autour de la direction longitudinale en tant que ligne d'axe central à un angle prédéterminé par rapport au corps de fixation supérieur.
PCT/KR2021/013752 2020-10-13 2021-10-07 Clou métallique pour le traitement d'une fracture Ceased WO2022080752A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020200131740A KR102225080B1 (ko) 2020-10-13 2020-10-13 골절 치료용 금속정
KR10-2020-0131740 2020-10-13

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WO2022080752A1 true WO2022080752A1 (fr) 2022-04-21

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102225080B1 (ko) * 2020-10-13 2021-03-09 (주)한국원자력 엔지니어링 골절 치료용 금속정

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010006195A1 (fr) * 2008-07-09 2010-01-14 Amei Technologies, Inc. Clou d'arthrodèse de cheville et ensemble stabilisateur
KR100959186B1 (ko) * 2008-02-14 2010-05-24 이순혁 리니어 액추에이터를 구비한 장골/경골 신연장치
US20120209269A1 (en) * 2011-02-14 2012-08-16 Ellipse Tecnologies, Inc. Variable length device and method
US20170151000A1 (en) * 2012-11-12 2017-06-01 Navid Ziran Dynamic Axial Nail For Intramedullary Treatment Of Long Bone Fractures
WO2020118204A1 (fr) * 2018-12-06 2020-06-11 Mayo Foundation For Medical Education And Research Système de clou intramédullaire
KR102225080B1 (ko) * 2020-10-13 2021-03-09 (주)한국원자력 엔지니어링 골절 치료용 금속정

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100959186B1 (ko) * 2008-02-14 2010-05-24 이순혁 리니어 액추에이터를 구비한 장골/경골 신연장치
WO2010006195A1 (fr) * 2008-07-09 2010-01-14 Amei Technologies, Inc. Clou d'arthrodèse de cheville et ensemble stabilisateur
US20120209269A1 (en) * 2011-02-14 2012-08-16 Ellipse Tecnologies, Inc. Variable length device and method
US20170151000A1 (en) * 2012-11-12 2017-06-01 Navid Ziran Dynamic Axial Nail For Intramedullary Treatment Of Long Bone Fractures
WO2020118204A1 (fr) * 2018-12-06 2020-06-11 Mayo Foundation For Medical Education And Research Système de clou intramédullaire
KR102225080B1 (ko) * 2020-10-13 2021-03-09 (주)한국원자력 엔지니어링 골절 치료용 금속정

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