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WO2025068171A1 - Vis destinée à être disposée dans un corps vertébral d'une colonne vertébrale - Google Patents

Vis destinée à être disposée dans un corps vertébral d'une colonne vertébrale Download PDF

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Publication number
WO2025068171A1
WO2025068171A1 PCT/EP2024/076767 EP2024076767W WO2025068171A1 WO 2025068171 A1 WO2025068171 A1 WO 2025068171A1 EP 2024076767 W EP2024076767 W EP 2024076767W WO 2025068171 A1 WO2025068171 A1 WO 2025068171A1
Authority
WO
WIPO (PCT)
Prior art keywords
screw
thread
rod
section
strength
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.)
Pending
Application number
PCT/EP2024/076767
Other languages
German (de)
English (en)
Inventor
Karsten Große
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.)
Srh Wald Klinikum Gera GmbH
Original Assignee
Srh Wald Klinikum Gera GmbH
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 Srh Wald Klinikum Gera GmbH filed Critical Srh Wald Klinikum Gera GmbH
Publication of WO2025068171A1 publication Critical patent/WO2025068171A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A61B17/8625—Shanks, i.e. parts contacting bone tissue
    • A61B17/863—Shanks, i.e. parts contacting bone tissue with thread interrupted or changing its form along shank, other than constant taper
    • 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
    • A61B17/70—Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
    • A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7002—Longitudinal elements, e.g. rods
    • A61B17/7004—Longitudinal elements, e.g. rods with a cross-section which varies along its length
    • A61B17/7005—Parts of the longitudinal elements, e.g. their ends, being specially adapted to fit in the screw or hook heads
    • 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
    • A61B17/70—Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
    • A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7002—Longitudinal elements, e.g. rods
    • A61B17/701—Longitudinal elements with a non-circular, e.g. rectangular, cross-section
    • 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
    • A61B17/70—Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
    • A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7002—Longitudinal elements, e.g. rods
    • A61B17/7019—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other
    • A61B17/7031—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other made wholly or partly of flexible material
    • 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
    • A61B17/70—Spinal positioners or stabilisers, e.g. stabilisers comprising fluid filler in an implant
    • A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass
    • 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
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A61B17/8625—Shanks, i.e. parts contacting bone tissue
    • A61B17/8635—Tips of screws
    • 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
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A61B17/864—Pins or screws or threaded wires; nuts therefor hollow, e.g. with socket or cannulated

Definitions

  • Screw for placement in a vertebral body of a spine
  • the invention comprises a screw for placement in a vertebral body of a spinal column.
  • the invention lies in the technical field of screw systems for spinal surgery and the corresponding accessories.
  • the treatment of choice for fractures is a screw-rod system.
  • This is intended to help immobilize the fracture or spondylolisthesis, for example, to promote the healing process.
  • the composition of the bone and its matrix plays a key role in this.
  • many clinics obtain additional information regarding the bone matrix and blood parameters. For example, bone density is determined using DXA (dual-energy X-ray absorptiometry), Q-CT (quantitative CT osteodensitometry), and laboratory parameters that determine calcium uptake. This is linked to the expanded diagnosis of whether the screws need to be fixed in the vertebral body with or without cement. If this process completed, the operation is carried out using the screw-rod system mentioned above.
  • Surgical insertion is performed in various ways. Traditionally, if the anatomical conditions are physiological, the screw is inserted using two X-ray image intensifiers. If the anatomical conditions are difficult or even radiographically impossible, but the insertion is medically necessary, navigation is used as an aid.
  • the screws currently used are based on a special metric thread, with and without cannulation. After the screw is securely inserted, a guide wire is inserted through the cannulation. This wire, which serves as a trajectory for the cannulated screw to ensure a "safe path" through the vertebral body, is used to securely position the screw within the vertebral body through rotational movements.
  • the patient is positioned prone.
  • the stab incisions are marked at skin level.
  • the stab incisions are then made under image intensifier control.
  • a Yamshidi-Gosh needle is then positioned so that the entry points are congruent in the AP and lateral views.
  • the needle is then driven in with a hammer, like a nail being driven into the wall. This is done under constant image intensifier control.
  • a thin wire (Kirschner wire) is then pushed over the needle, which has a bore, into the vertebral body.
  • the needle is removed.
  • a thread is cut to securely guide the screw in the pedicle.
  • the previously measured screw (length and diameter) is then screwed in over the guide wire.
  • the result is checked biplanarly.
  • the procedure is then complete.
  • the patient is positioned on their stomach.
  • the skin incision is marked at skin level.
  • the length of the skin incision is limited using the image intensifier, i.e., only as much skin is cut as necessary. This is essential for wound healing and to reduce the risk of infection during and after the operation.
  • the preparation then takes place, including the insertion and secure fixation of the navigation holder to a spinous process.
  • the site is then covered and the navigation scan is performed using CT.
  • the data is transferred from the system itself to the navigation unit, and a virtual 3D image is generated.
  • the instruments required for navigation are then imported into the system and checked to ensure that the accuracy matches the virtual and real world.
  • a channel for the guide wire is then drilled using navigation.
  • the so-called navigated drill sleeve is removed while the wire is fixed.
  • the screw length and diameter are then precisely determined using the visualization on the navigation system.
  • the thread cutter is then used to pave the way for the screw. This is then inserted, and the result is checked and documented using an X-ray image intensifier. It should be noted that this is not done for each screw, but rather when all screws have been inserted.
  • a rod is inserted into the tulips on the left and right sides of the screw head.
  • the rods are usually pre-bent.
  • the rod is then firmly secured in the screw head in the "tulip" using an internal screw, which is tightened with a torque wrench to prevent the rod from shifting under load. This creates a secure force connection to redirect the energy, allowing the fracture, for example, to begin healing.
  • the segmental disc When surgically treating degenerative diseases using a screw-rod system from behind, the segmental disc must also be partially removed and replaced with a disc replacement to allow the entire system to heal and prevent loosening or fractures.
  • the disc is removed from behind, from the side, or from the front. Loosening or fractures of the screw or rod and pseudoarthrosis of the spacers in the intervertebral disc spaces are repeatedly observed.
  • the present invention is therefore based on the object of providing a screw for arrangement in a vertebral body of a spine which does not loosen and in which material fracture does not occur.
  • the invention comprises a screw for placement in a vertebral body of a spinal column.
  • the screw comprises a screw head, a first threaded section with a trapezoidal thread directly adjacent to the screw head, and a second threaded section with a metric thread or a worm thread adjacent to the first threaded section.
  • the thicker threads are suitable for transmitting larger axial forces before failing by shearing. This ensures that the screw connection does not loosen or cause material fracture due to unfavorable force distribution.
  • the screw further comprises a third threaded section adjoining the second threaded section, with a drill thread for creating a recess in the vertebral body. This eliminates the intraoperative step of pre-drilling, which simultaneously eliminates the time-consuming repositioning of the screw.
  • the second threaded section and/or the third threaded section includes at least one opening for the introduction of material for additional fixation of the screw. This allows the screw to be additionally fixed with cement, depending on the diagnosis.
  • the screw further comprises an axial channel extending from the screw head towards the third threaded section for the insertion of a wire.
  • a guide wire is inserted through the channel. This wire, which is connected to the cannulated Since the screw serves as a trajectory for the “safe path” through the vertebral body, it is securely positioned in the vertebral body by rotating movements.
  • the screw further comprises a fourth threaded section with a fine pitch thread, located between the first threaded section and the second threaded section.
  • a fourth threaded section with a fine pitch thread located between the first threaded section and the second threaded section. This enables a smooth transition from the trapezoidal thread to the metric thread. It is particularly advantageous if the second threaded section is a worm thread. This allows for rapid insertion of the screw without numerous turns of the screwdriver, saving time and increasing the contact surface inside the vertebral body.
  • the trapezoidal thread degenerates into a buttress thread in the first thread section.
  • the buttress thread can have a narrowing plateau as viewed from the screw head. This opens up another useful modification of the screw: starting with a threadless drill tip, the buttress thread initially acts as a drill thread with little or no plateau, and then exhibits an increasingly broader plateau toward the screw head.
  • an arrangement for connecting and fixing the screws to the vertebral body comprises at least two screws and at least one rod, wherein the rod can be arranged to engage the screw head of the screw. This allows optimal immobilization of a fracture to be achieved to promote the healing process.
  • the rod comprises a circular section with an inner core with a strength fi and a sheath arranged around the core with a strength f2, a coupling for a device for arranging the rod, and a conical end section arranged opposite the coupling for guiding the rod through the screw head.
  • An advantageous aspect is that the strength fi is greater than the strength f2. This allows for an optimal distribution of tensile and compressive forces.
  • the strength f2 is greater than the strength fi. This neutralizes the tensile and compressive forces in zones where fatigue fractures regularly occur, preventing fatigue zones from forming and thus preventing fractures.
  • the rod exhibits torsion. This minimizes the peak shear forces and bending moments to such an extent that the risk of the rod breaking is eliminated.
  • An advantageous aspect of the rod is its rectangular base section. This allows for optimal grip of the rod between the screws and very high strength to withstand external forces caused by movement.
  • the rod includes a section with a circular base.
  • Such a rod provides the screw-rod system with the necessary dynamic strength under load.
  • Fig. 1 is a schematic representation of a screw according to the invention with a trapezoidal thread, a metric thread and a drill bit;
  • Fig. 2 is a schematic representation of a screw according to the invention with a worm thread, a metric thread and a drill bit
  • Fig. 3 is a schematic representation of a screw according to the invention with a worm thread, a metric thread, a drill bit and a fine thread in the central area;
  • Fig. 4 is a schematic representation of a screw according to the invention with a trapezoidal thread, a metric thread, a drill bit and a fine thread in the central area;
  • Fig. 5 is a schematic representation of a rod with a coupling and a guide tip for an arrangement with two screws according to the invention
  • Fig. 6 is a schematic representation of a bar and the corresponding cross-section through the layers of different strength
  • Fig. 7a is a schematic representation of a conventional screw with a uniform thread over the entire length of the screw
  • Fig. 7b is a schematic representation of a screw according to the invention with an increasingly narrow trapezoidal thread which has degenerated into a saw thread, a metric thread section and a drill bit;
  • Fig. 7c is a schematic representation of a screw according to the invention with a buttress thread in the first thread section, which smoothly transitions into the third thread section up to the thread-free drill tip;
  • Fig. 8 schematic representation of a twisted rod with a rectangular base.
  • Fig. 1 shows a schematic representation of a screw 1 according to the invention for arrangement in a vertebral body of a spinal column.
  • the screw 1 comprises a screw head 3, a first threaded section 6 with a trapezoidal thread directly adjoining the screw head 3, and a second threaded section with a metric thread 7 or a worm thread 9 adjoining the first threaded section 6.
  • the trapezoidal thread is known from machine and tool construction. Trapezoidal threads are used to transmit movements and forces, for example on lead screws in Lathes or screw presses.
  • the larger pitch is advantageous here.
  • the thicker threads are capable of transmitting greater axial forces before failing due to shearing. In typical applications, the moderate self-locking effect due to the larger pitch is tolerable or insignificant.
  • there is a larger contact surface and a lower pitch This eliminates the knife-edge effect.
  • the larger contact surface reduces the pressure on the bone matrix, thus potentially reducing or even dissipating the introduced energy to an impercept
  • the screw 1 comprises a third threaded section 11 adjoining the second threaded section 7, 9, with a drilling thread for creating a recess in the vertebral body. It is also conceivable that the third threaded section 11 comprises a thread with thread-cutting properties.
  • Fig. 2 shows a schematic representation of a screw 1 according to the invention.
  • the second threaded portion 7, 9 and/or the third threaded portion 11 comprises at least one opening 4 for introducing material for additional fixation of the screw 1.
  • the second threaded portion is a worm thread 9.
  • Fig. 3 shows a schematic representation of a screw 1 according to the invention.
  • the screw 1 comprises a fourth threaded section 8 with a fine thread arranged between the first threaded section 6 and the second threaded section 7, 9.
  • Fig. 4 shows a schematic representation of a screw 1 according to the invention, comprising an axial channel 5 for inserting a wire, extending from the screw head 3 in the direction of the third threaded portion 11.
  • the screw head 3 comprises a screw head drive with a hexagon (hexagon socket).
  • Fig. 5 shows a schematic representation of a rod 20 for an arrangement on two screws 1 according to the invention.
  • Such an arrangement comprises at least two screws 1 and at least one rod 20 for connecting and fixing the screws 1.
  • the rod 20 is in each case engaged on the screw head 3 of the screw 1
  • the rod 20 comprises a circular section 23 with an internal core 24 having a strength fi and a sheath 25 having a strength f2 arranged around the core 24, a coupling 21 for a device for arranging the rod 20, and a conical end section 22 arranged opposite the coupling 21 for guiding the rod 20 through the screw head 3.
  • Fig. 6 shows a schematic representation of a rod 20 and the corresponding cross-section through the layers of different strengths. It is advisable for the strength fi to be greater than the strength f2 to achieve an optimal distribution of the tensile and compressive forces in the elastic dynamic shell 25.
  • the strength f2 is greater than the strength fi.
  • the elastic dynamic core 24 would be located inside, and the shell 25 would be made of solid, stiffer steel to neutralize the tensile and compressive forces in zones prone to fatigue fractures, preventing fatigue zones from forming and thus preventing fractures.
  • Fig. 7a shows a conventional screw 1 in which a metric buttress thread extends over the entire length of the screw.
  • the pitch of the thread form is 3 mm.
  • the first thread section 6 is a trapezoidal thread which has been modified to a buttress thread.
  • the adjoining second thread section has, for example, a metric thread or a worm thread.
  • the flank angle of the buttress thread is preferably 10 to 15 degrees, followed by a plateau, as is the case with the trapezoidal thread. After that there is a falling flank similar to the trapezoidal thread, but which can also be steeper.
  • the pitch of the buttress thread is preferably 6 mm.
  • FIG. 7c shows a further modified form of the screw 1 with a buttress thread.
  • the buttress thread initially has a broad plateau at the screw head, which then becomes increasingly narrower along the screw 1, with the pitch of the buttress thread remaining constant over the thread length.
  • the buttress thread gradually transitions into the third thread section 11 with a further reduced plateau, forming a type of drilling thread, until it reaches a thread-free drill tip.
  • Fig. 8 shows a rod 20 exhibiting torsion. The torsion is directed to the left and/or right.
  • the rod 20 comprises a section 26 with a rectangular base.
  • rod 20 comprises a section 26 with a circular base area.
  • the torsion describes the twisting of the rod 20, which is caused by the effect of a torsional moment.
  • torsion There are different forms of torsion, including torsion without curvature and torsion with unrestricted curvature (Saint-Venant).
  • torsion In closed profiles whose products of wall thickness and distance from the axis of rotation are constant across all sides, shear stresses arise during torsion, but no normal stresses in the longitudinal direction, and thus no warping of the cross-section. This is referred to as torsion without warping.
  • torsion also called Saint-Venant torsion
  • Saint-Venant torsion allows for unhindered displacement of cross-sectional points in the longitudinal direction (Z-direction) of the profile. This is also referred to as unhindered warping of the cross-section.
  • the cross-sectional shape perpendicular to the Z-direction remains intact (minor deformations). It is assumed that the cross-sectional warping is independent of the position of the cross-section and can adjust itself freely.
  • a trick is used to twist profiles that do not have a circular cross-section. These cannot be considered Neuber shells. However, such a profile must not be firmly clamped; it must stand freely in space, and the moment is applied on both sides. This ensures that no normal stresses occur along the profile, even though individual points on the profile may shift longitudinally.

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Neurology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (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

L'invention concerne une vis (1) destinée à être disposée dans un corps vertébral d'une colonne vertébrale, comprenant une tête de vis (3), une première partie filetée (6) directement adjacente à la tête de vis (3) et pourvue d'un filet trapézoïdal et une deuxième partie filetée adjacente à la première partie filetée (6) et pourvue d'un filet métrique (7) ou d'un filet hélicoïdal (9).
PCT/EP2024/076767 2023-09-27 2024-09-24 Vis destinée à être disposée dans un corps vertébral d'une colonne vertébrale Pending WO2025068171A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102023126213.0A DE102023126213B4 (de) 2023-09-27 2023-09-27 Schraube zur Anordnung in einem Wirbelkörper einer Wirbelsäule
DE102023126213.0 2023-09-27

Publications (1)

Publication Number Publication Date
WO2025068171A1 true WO2025068171A1 (fr) 2025-04-03

Family

ID=92895696

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2024/076767 Pending WO2025068171A1 (fr) 2023-09-27 2024-09-24 Vis destinée à être disposée dans un corps vertébral d'une colonne vertébrale

Country Status (2)

Country Link
DE (1) DE102023126213B4 (fr)
WO (1) WO2025068171A1 (fr)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0470660A1 (fr) * 1990-08-07 1992-02-12 Acromed B.V. Dispositif pour la correction de la scoliose
EP0436697B1 (fr) * 1989-07-26 1994-07-13 J.B.S. S.A. Dispositif de redressement, fixation, compression, elongation du rachis
US20060036242A1 (en) * 2004-08-10 2006-02-16 Nilsson C M Screw and rod fixation system
US20080125777A1 (en) * 2006-11-27 2008-05-29 Warsaw Orthopedic, Inc. Vertebral Stabilizer Having Adjustable Rigidity
US20100057125A1 (en) * 2008-09-03 2010-03-04 Zimmer Spine Inc. Vertebral fixation system
US20130253594A1 (en) * 2012-03-26 2013-09-26 Spartek Medical, Inc. System and method for securing an implant to a bone containing bone cement
US20180146987A1 (en) * 2016-11-30 2018-05-31 Stryker European Holdings I, Llc Spinal fastener with serrated thread
US20180296250A1 (en) * 2015-10-06 2018-10-18 Joimax Gmbh Device for fixating a rod to a bone
US20200281608A1 (en) * 2019-03-06 2020-09-10 K2M, Inc. Bone Screws, Instrumentation, and Methods of Using of Same
US20220354544A1 (en) * 2008-02-02 2022-11-10 Globus Medical, Inc. Pedicle screw having a removable rod coupling

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19295C (de) * C. schenck in Darmstadt Zählapparat zur Feststellung des Gewichts bei Laufgewichtswaagen
HUP9700532A1 (hu) * 1997-02-28 1998-12-28 Surgicraft Limited, Implantátum csigolyák rögzítésére
DE102013202065B4 (de) * 2013-02-08 2017-09-07 Silony Medical International AG Osteosynthesevorrichtung
US9463057B2 (en) * 2014-01-16 2016-10-11 Amendia, Inc. Orthopedic fastener
JP7446965B2 (ja) * 2020-09-29 2024-03-11 グローブライド株式会社 脊椎固定具用ロッド
US11751915B2 (en) * 2021-07-09 2023-09-12 Roger P. Jackson Modular spinal fixation system with bottom-loaded universal shank heads

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0436697B1 (fr) * 1989-07-26 1994-07-13 J.B.S. S.A. Dispositif de redressement, fixation, compression, elongation du rachis
EP0470660A1 (fr) * 1990-08-07 1992-02-12 Acromed B.V. Dispositif pour la correction de la scoliose
US20060036242A1 (en) * 2004-08-10 2006-02-16 Nilsson C M Screw and rod fixation system
US20080125777A1 (en) * 2006-11-27 2008-05-29 Warsaw Orthopedic, Inc. Vertebral Stabilizer Having Adjustable Rigidity
US20220354544A1 (en) * 2008-02-02 2022-11-10 Globus Medical, Inc. Pedicle screw having a removable rod coupling
US20100057125A1 (en) * 2008-09-03 2010-03-04 Zimmer Spine Inc. Vertebral fixation system
US20130253594A1 (en) * 2012-03-26 2013-09-26 Spartek Medical, Inc. System and method for securing an implant to a bone containing bone cement
US20180296250A1 (en) * 2015-10-06 2018-10-18 Joimax Gmbh Device for fixating a rod to a bone
US20180146987A1 (en) * 2016-11-30 2018-05-31 Stryker European Holdings I, Llc Spinal fastener with serrated thread
US20200281608A1 (en) * 2019-03-06 2020-09-10 K2M, Inc. Bone Screws, Instrumentation, and Methods of Using of Same

Also Published As

Publication number Publication date
DE102023126213A1 (de) 2025-03-27
DE102023126213B4 (de) 2025-04-30

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