Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
  • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
  • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
  • A61B17/68—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
  • A61B17/8605—Heads, i.e. proximal ends projecting from bone
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
  • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
  • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
  • A61B17/68—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
  • A61B17/8019—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 where the means are a separate tool rather than being part of the plate
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
  • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
  • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
  • A61B17/68—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
  • A61B17/8695—Washers
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
  • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
  • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
  • A61B17/68—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
  • A61B17/842—Flexible wires, bands or straps
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
  • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
  • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
  • A61B17/68—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

Definitions

• the present invention relates to a cable-supported cannulated screw developed to be used in fracture fixation, fusion, and osteotomy applications of large and small bones.
• the present invention particularly relates to a cannulated screw that is developed to be used in orthopedic surgical applications, and that is prevented from being dislocated by means of cables and plates inserted through the head of the screw and fixed to a suitable and desired location on a bone.
• cannulated screws are generally used in cases related to pelvic, hip, knee, foot, and ankle regions. Cannulated screws are used in the reunion of bone fragments in femur neck fractures, sacroiliac joint dislocations, tibial plateau and femur condyle fractures, calcaneus and talus fractures, ankle and subtalar arthrodesis, and humerus and olecranon fractures.
• cannulated screws comprise threads that bring two fragments closer to one another after reaching the outer section of a fragment like a fracture that is desired to be subjected to compression.
• Cannulated screws which generally comprise a head and a body portion, are manufactured to feature various dimensions based on the size of the bone into which the screw is going to be inserted.
• Cannulated screws are inserted by using a Kirschner wire as a guide after the fracture line is drilled. After the screw is inserted, the head of the screw is again conveyed over the guidewire and pulled in order to close the gap between fragments. This process is repeated until the fracture line is closed, thereby fixing the bone.
• Said invention relates to screws used in the treatment of various types of bone fractures including OTA 33B1-2 Cl-2-3, Schatzker Type 1, 4, and 5, patellar transverse fractures, pubic and sacroiliac separations, characterized in that; it particularly relates to a cannulated telescopic screw that is applied to the gap (tunnel) created in the bone by making small incisions by matching the fracture lines in fractured bones, thereby eliminating the requirement of inflicting redundant wounds during the surgical intervention stage, that comprises of embedded telescopic female screw and male screw, that is attached to the bone by broadening the fastening surface by means of the outer inverse male screw located on the outer surface of the female screw, thus prevents the deformation of the bone during the fixation of the male screw connected to the female screw path located
• a cannulated dynamic traction screw relates to an implant product used for the union of the epiphysis of a fractured bone to the body portion thereof in open joint fractures in orthopedics.
• the aforementioned cannulated dynamic traction screw features a dynamic structure that comprises two main components which are the traction head and the screw.
• Cannulated dynamic traction screw is designed to feature various diameters and lengths in order to accommodate the application field based on the sizes of various bones. Said invention provides ease of use and ensures the fixation of the bone via traction.
• the aforementioned invention is designed to ensure a more stable fracture fixation in hip fractures, comprises holes on the threaded portion thereof, and a cannula passing through the midsection of both the head of the screw and the stem of the screw.
• the cement used in orthopedics and traumatology surgeries is transferred through the cannula created on the head of the screw and fastened, thereby ensuring that the cement reaches the spongy tissue through the holes located on the threaded portion of the screw.
• the screw adheres to the cement, thereby preventing any potential complications such as the slipping of the screw and ensuring a more stable fixation.
• Screws which are custom-designed to feature a specific number of holes and a predetermined size based on the shape of the fracture are provided in a screw box and accordingly sterilized.
• Cannulated hexagonal screwdriver is used since the screw is cannulated.
• Said invention relates to a tension band system that consists of a locking screw-washer that not only serves as a tensioning band for the internal fixation of olecranon but also ensures internal fixation in olecranon fractures in upper extremities or after olecranon osteotomy.
• the tension band technique is implemented through screw or Kirschner wire (k-wire) apart from other fixation methods for the internal fixation in olecranon fracture or subsequent to olecranon osteotomy.
• fixations performed by using screws or k-wire usually result in implant failure (loosening or migration) and stability problems.
• Said invention differs from the available tension band techniques in terms of both stability and management of implant failure issues.
• Said invention is a tension band system that consists of a locking screw-washer system that may be used in the fixation of all fractures and osteotomies in which the tension band method is implemented. This particular system prevents screw migration as the fracture or osteotomy region is internally fixed by means of a single screw and due to the fact that the tension band wire (cerclage wire) features screw connection through the holes located on the washer that ensure interlocking between the screw and the washer.
• the locking olecranon screw- washer system to be used in tension band fixation comprises of two main components.
• the first component is the locking cannulated screw system, which in turn comprises 3 main sections as the proximal, medial, and distal sections.
• the proximal section (A) of the screw is capable of interlocking the head of the screw and the screw washer.
• the medial section (B) of the screw is the cannulated screw body that is positioned inside the bone.
• the distal section is the threaded portion of the screw featuring various lengths.
• the second component is the locking washer system and comprises a single piece. This washer system further comprises two main sections, which are the midsection and the periphery section.
• the periphery section is the part that comprises holes in sufficient number and suitable configuration in order to fasten the cerclage wire, which is used in tension band technique, to the locking washer system.
• Said invention comprises of a screw system that may be fully or partially threaded and that may feature various lengths and widths based on the fixation of the fracture or osteotomy, and a screw washer system that includes holes with various dimensions and configurations.
• the locking screw- washer system is required to be provided together with corresponding screwdrivers and other surgical equipment among other surgical sets.
• the present invention relates to a cannulated screw that is developed to be used in surgical applications in orthopedics, and that meets the aforementioned requirements, and that eliminates all disadvantages and provides further advantages.
• the object of the present invention is to improve the union rate and application success by preventing the system from dislocating after the application by means of the cables inserted into the head of the cannulated screw and plates that allow for fixing said cables to the desired positions on the bone.
• the object of the present invention is to render the patient independent of applications like splints earlier, thereby initiating the rehabilitation period at an earlier stage and improving the joint mobility in the postoperative period by preventing the cannulated screw from getting dislocated.
• Yet another object of the present invention is to promote the surgeon's confidence in fixation through fixing the cannulated screw to the bone by means of cables, thereby allowing the surgeon to recommend postoperative exercises to the patient at an earlier stage.
• FIGURE 1 illustrates the general schematic view of the inventive cannulated screw.
• FIGURE 2 illustrates the detailed schematic view of the connector positioned on the body.
• FIGURE 3 illustrates the general schematic view of the plate in a disassembled state.
• FIGURE 4 illustrates the general schematic view of the inventive cannulated screw fixed onto a fracture in a preferred embodiment of the present invention.
• inventive cannulated screw (100) developed to be used in surgical applications in orthopedics is only described to provide a better understanding of the subject and without constituting any limiting effects thereon.
• the inventive cannulated screw (100) developed to be used in surgical applications carried out in the field of orthopedics and comprising a body (110) that is inserted to the region in which the fracture line (Al) is located on the bone and that includes threads (111) thereon, a screw head with screwdriver insert hole (120) that is created so as to stay on the surface of the bone (A) above said body (110), and a connector (130) comprises in the most basic form thereof; cable (150) that prevents the body (110) from coming out of the bone (A); a connector (150) on which the screw head with screwdriver insert hole (120) is located and through which said cables (150) is inserted through; a plate (140) that is applied to a region of the bone (A) other than the fracture line (A
• the inventive cannulated screw (100) illustrated in Figure 1 is used in order to properly and stably rejoin the fracture lines (Al) that occur on the bone (A), thereby ensuring a proper union process.
• the cannulated screw (100) comprises; a body (110) that is inserted into the bone (A), a screw head with a screwdriver insert hole (120) that remains outside of the bone (A), a connector (130) that is attached to the screw head with screwdriver insert hole (120), a plate (140) that is attached to the other side of the fracture line (Al), and a cable (150) that interconnects the plate (140) and the connector (130).
• the tip of the body (110) may feature a tapered, blunt, or mixed structure depending on the procedure to be performed and the characteristics of the bone (A).
• the screw head with screwdriver insert hole (120) comprises the connector (130) that is used to stabilize the body's (110) position inside the bone (A).
• the connector (130) may be integrated into the screw head with screwdriver insert hole (120), it may also be designed to be independent therefrom. In case the connector (130) is designed to be independent, then it features a cap form, and accordingly, fitted onto the crew head with screwdriver insert hole (120).
• the connector (130) illustrated in Figure 2 comprises the cable sockets on the connector (131) through which the cable (150) is inserted.
• the connector (130), which preferably has a rectangular shape, comprises cable socket on the connector (131) on every edge thereof through which the cable (150) is inserted.
• the cable socket on the connector (131) allows for tensioning the connector (130) from both sides by means of a cable (150) and connected to the plate (140) attached to the other side of the fracture line (Al).
• Each cannulated screw (100) preferably comprises at least 2 plates (140).
• the plate (140) illustrated in Figure 3 comprises a cable end insertion hole (143) through which the cable (150) is fastened and secured after the cable is inserted through the connector (130) and tensioned and the connector that fixes the plate to the bone (142). After said cables (150) are run through the cable end insertion hole (143) and the cable side exit hole (144), they are fixed to the concave surface (141) by means of a fastening apparatus.
• the cables (150) are run through the cable end insertion hole (143) and the cable side exit hole (144) and the suitable tension is achieved, they are fastened through the concave surface (141) by means of fastening apparatus.
• the cannulated screw (100) is prevented from loosening and getting dislocated due to factors like tendon traction and insufficiency of healthy bone (A) tissue.
• Said plate (140) is fixed to the bone (A) by means of the connector that fixes the plate to the bone (142).
• the cannulated screw (100) illustrated in Figure 4 is applied to the fracture line (Al) on the bone (A), it is set up such that the fracture line initially passes the fracture (Al) fragment, and then applies compression thereto.
• the plates (140) with an excisable connector that fixes the plate to the bone (142) are applied to a suitable bone (A) region other than the fracture line (Al) by means of a locking screw.
• Said plates (140) are preferably positioned such that they are 1 or 2 in quantity.
• the cables (150) are run through any of the two cable sockets on the connector (131) on the connector (130) located on the upper section of the cannulated screw (100) and this operation is repeated for the other surface. After the cables (150) are run through the cable socket on the connector (131), they are first run through the cable end insertion hole (143) on the plate (140), and then through the cable side exit hole (144).
• a total of 8 cable socket on the connector (131) through which the cables (150) are run through are positioned such that 2 of each are located on each side of the connector (130) located on the screw head with screwdriver insert hole (120) of the cannulated screw (100).
• the inventive cannulated screw (100) may be applied to several different bone (A) fracture lines (Al).
• the main area of use of the inventive cannulated screw (100) is the bone (A) fracture lines (Al) in fractures of the olecranon, trochanter major, tibial tubercle, and medial malleolus in which a tendon or ligament is attached thereto.
• the reason is that such fractures usually comprise vectorial forces during the movement of tendons or ligaments attached to the aforementioned bones, which makes fixation of the fraction line (Al) difficult.
• Supporting the inventive cannulated screw (100) with cables (150) improves the durability thereof and reduces the risk of implant failure development.
• the inventive cannulated screw (100) may be applied to various fracture lines (Al) in a customized manner.
• the inventive cannulated screw (100) is applied to the olecranon (elbow) bone (A).
• the inventive cannulated screw (100) was inserted through the proximal and distal (closer and farther to the body) fragments of the fracture line (Al) located on the olecranon bone (A), and cables (150) were run through the connector (130).
• Said cables (150) were attached to the distal (farther from the body) fragment of the fracture line (Al) in a tensioned manner by preferably 2 plates (140), thereby preventing the cannulated screw (100) from getting dislocated, the triceps tendon that is attached to the proximal (closer to the body) of the bone (A) on which the fracture line (Al) is located, applies traction to the proximal fragment in the opposite direction by pulling it and produces an effect that forces the cannulated screw (100) implanted to the bone.
• the fact that said cables (150) are parallel to the direction of compression produces a force opposite to the traction applied by the tendon, thereby preventing the cannulated screw (100) from loosening and getting dislocated.
• a plate (140) with an excisable connector that fixes the plate to the bone (142) assumes a role auxiliary to fixation in segmented fracture lines (Al) instead of the connector that fixes the plate to the bone (142) of the cable end insertion hole (143) and the cable side exit hole (144) of the plate (140) through which the cable (150) is run.
• the plate (140) was provided with six side cable exit holes (144) and said plates (140) were fixed to the bone (A) by means of six connector that fixes the plate to the bone (142) positioned side by side on the same plane in an ulna metaphyso-diaphyseal fracture (Al) accompanied by olecranon fracture (Al).

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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)
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• Surgical Instruments (AREA)

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Citations (3)

• 2019
  • 2019-12-31 TR TR2019/23125A patent/TR201923125A1/tr unknown
• 2020
  • 2020-12-25 WO PCT/TR2020/051400 patent/WO2021137824A1/en active Application Filing

Patent Citations (3)

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