WO2022183664A1 - Vis à os coulissante à pression et à verrouillage - Google Patents

Vis à os coulissante à pression et à verrouillage Download PDF

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Publication number
WO2022183664A1
WO2022183664A1 PCT/CN2021/107563 CN2021107563W WO2022183664A1 WO 2022183664 A1 WO2022183664 A1 WO 2022183664A1 CN 2021107563 W CN2021107563 W CN 2021107563W WO 2022183664 A1 WO2022183664 A1 WO 2022183664A1
Authority
WO
WIPO (PCT)
Prior art keywords
thread
sliding
screw
sliding shaft
threaded hole
Prior art date
Application number
PCT/CN2021/107563
Other languages
English (en)
Chinese (zh)
Inventor
余斌
孙福文
孙硕
孙德修
Original Assignee
山东航维骨科医疗器械股份有限公司
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.)
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Application filed by 山东航维骨科医疗器械股份有限公司 filed Critical 山东航维骨科医疗器械股份有限公司
Publication of WO2022183664A1 publication Critical patent/WO2022183664A1/fr

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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, 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
    • A61B17/74—Devices for the head or neck or trochanter of the femur
    • 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
    • A61B17/80—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, 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
    • A61B17/808—Instruments for holding or positioning bone plates, or for adjusting screw-to-plate locking mechanisms
    • 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
    • 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, 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
    • A61B17/8665—Nuts
    • 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
    • A61B2017/8655—Pins or screws or threaded wires; nuts therefor with special features for locking in the bone

Definitions

  • the invention provides a medical instrument, especially a sliding compression locking bone screw.
  • goose head nails or PFAN intramedullary nails are commonly used in clinical treatment of patients with femoral neck fractures, and these two medical devices have different defects.
  • the defect of the goose head nail is that the thread of the bone screw used is set at both ends of the fracture line, and there is no postoperative compression function, so it cannot effectively promote the healing of the fracture surface.
  • the PFAN intramedullary nail has the function of postoperative compression, it requires manual manual compression after surgery.
  • the present invention provides a sliding compression locking bone screw, which overcomes the above-mentioned defects. It mainly includes bone screws and limit sleeves.
  • the front end of the bone screw is provided with a thread A, which is used to screw into the femoral head at one end of the fracture line.
  • a thread A which is used to screw into the femoral head at one end of the fracture line.
  • the outer edge of the sliding shaft is smaller than the polished rod
  • the rear end of the sliding shaft is provided with a screw head
  • a step B between the screw head and the sliding shaft, and the outer edge of the screw head is larger than
  • the screw head is provided with a thread B, the rotation direction of the thread B is opposite to that of the thread A, and the thread B is a rectangular thread.
  • the limit sleeve is provided with a threaded hole, the threaded hole is arranged in cooperation with the thread B, the rear end of the threaded hole is provided with a stepped hole, the rear end of the stepped hole is provided with a tool hole, and the screw head is backward It is screwed through the threaded hole and placed in the stepped hole.
  • the sliding shaft is arranged in the threaded hole and is slidably matched with the threaded hole. The step A slides backward to the front end of the limit sleeve and stops.
  • the distance is set to 5-10mm, and the rear end of the limit sleeve is provided with a tapered thread, which is screwed into the tapered screw hole of the bone plate or screwed into the taper screw hole of the open nut of the universal locking bone plate of CN201595922U.
  • the screw head stops at the bottom end of the step hole, and continue to screw in the bone screw to pull the two broken ends of the femoral neck closer. and pressurized.
  • a sliding compression locking bone screw of the present invention mainly includes a bone screw A and a limiting sleeve A.
  • the front end of the bone screw A is provided with a thread C, which is used to screw into the femoral head at one end of the fracture line.
  • the rear end of the screw rod is provided with a sliding shaft, a step A is arranged between the screw rod and the sliding shaft, the outer edge of the sliding shaft is smaller than the screw rod, the rear end of the sliding shaft is provided with a screw head A, and the screw head A is connected to the screw head A.
  • a step B is arranged between the sliding shafts, and the outer edge of the screw head A is larger than the sliding shaft.
  • the limit sleeve A is provided with a threaded hole A, the rear end of the threaded hole A is provided with a stepped hole, the thread C is screwed forward through the threaded hole A, and the sliding shaft is slidably fitted through the thread Hole A, the screw head A stops at the bottom end of the stepped hole when it moves forward, the rear end of the stepped hole is provided with a tool hole, the step A slides backward to the front end of the limit sleeve A and stops, the sliding The distance between the two is set to 5-10mm, and the rear end of the limit sleeve A is provided with a tapered thread, which is screwed into the locking screw hole of the bone plate or screwed into the taper screw hole of the open nut of the universal locking bone plate of CN201595922U. During the operation, rotate the bone screw A forward according to the rotation direction of the thread C, the screw head A stops at the bottom end of the stepped hole, and continue to screw in to pull the two broken
  • FIG. 1 is a schematic structural diagram of the first embodiment of a sliding compression locking bone screw according to the present invention.
  • Fig. 2 is a schematic structural diagram of the second embodiment of a sliding compression locking bone screw according to the present invention.
  • FIG. 1 is a schematic structural diagram of the first embodiment of a sliding compression locking bone screw according to the present invention, which mainly includes a bone screw 1 and a limiting sleeve 2 .
  • the front end of the bone screw 1 is provided with a thread A, which is used to screw into the femoral head at one end of the fracture line.
  • a thread A which is used to screw into the femoral head at one end of the fracture line.
  • the outer edge of the sliding shaft 11 is smaller than the polished rod
  • the rear end of the sliding shaft 11 is provided with a screw head 12
  • there is a step B between the screw head 12 and the sliding shaft 11 the outer edge of the screw head 11 is larger than the sliding shaft 11
  • the screw head 11 is provided with a thread B
  • the rotation direction of the thread B is opposite to that of the thread A
  • the thread B is a rectangular thread.
  • the limit sleeve 2 is provided with a threaded hole 21, the threaded hole 21 is arranged in cooperation with the thread B, the rear end of the threaded hole 21 is provided with a stepped hole, and the rear end of the stepped hole is provided with a tool hole.
  • the screw head 12 is screwed backward through the threaded hole 21 and placed in the stepped hole.
  • the sliding shaft 11 is arranged in the threaded hole 21 and is slidingly matched with the threaded hole 21.
  • the step A slides backward to the limit.
  • the front end of the position sleeve 2 stops, and the sliding distance is set to 5-10 mm.
  • the rear end of the limit sleeve 2 is provided with a tapered thread, which is screwed into the tapered thread hole of the open nut 3 of the universal locking bone plate of CN201595922U.
  • Fig. 2 is a schematic structural diagram of the second embodiment of a sliding compression locking bone screw according to the present invention, which mainly includes a bone screw A4 and a limiting sleeve A5.
  • the front end of the bone screw A4 is provided with a thread C, which is used to be screwed into the femoral head at one end of the fracture line.
  • the rear end of the screw is provided with a sliding shaft 41, a step A is arranged between the screw and the sliding shaft 41, the outer edge of the sliding shaft 41 is smaller than the screw, the rear end of the sliding shaft 41 is provided with a screw head A42, the A step B is provided between the screw head A42 and the sliding shaft 41 , and the outer edge of the screw head A42 is larger than the sliding shaft 41 .
  • the limiting sleeve A5 is provided with a threaded hole A51, the rear end of the threaded hole A51 is provided with a stepped hole, the thread C is screwed forward through the threaded hole A51, and the sliding shaft 41 is slidably fitted through the thread Hole A51, the screw head A42 stops at the bottom end of the step hole when moving forward, the rear end of the step hole is provided with a tool hole, the step A slides backward to the front end of the limit sleeve A5 and stops, the sliding The distance between the two is set to 5-10mm, and the rear end of the limit sleeve A5 is provided with a tapered thread, which is screwed into the locking screw hole of the bone plate or screwed into the taper screw hole of the open nut 3 of the universal locking bone plate of CN201595922U.

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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 une vis à os coulissante à pression et à verrouillage, comprenant une vis à os (1) et un manchon de limitation (2). L'extrémité avant de la vis à os (1) est pourvue d'un filetage A, l'extrémité arrière du filetage A est pourvue d'une tige polie, l'extrémité arrière de la tige polie est pourvue d'un arbre coulissant (11), un épaulement A est disposé entre la tige polie et l'arbre coulissant (11), la taille du bord externe de l'arbre coulissant (11) est inférieure à celle de la tige polie, l'extrémité arrière de l'arbre coulissant (11) est pourvue d'une tête de vis (12), un épaulement B est disposé entre la tête de vis (12) et l'arbre coulissant (11), la taille du bord externe de la tête de vis (12) est supérieure à celle de l'arbre coulissant (11), la tête de vis (12) est pourvue d'un filetage B, et le sens de rotation du filetage B est opposé à celui du filetage A. Le manchon de limitation (2) est pourvu d'un trou fileté (21), le trou fileté (21) correspond au filetage B, l'extrémité arrière du trou fileté (21) est pourvue d'un trou à épaulement, et la tête de vis (12) est vissée en arrière par le trou fileté (21) et placée dans le trou à épaulement, l'arbre coulissant (11) est disposé dans le trou fileté (21) et présente un ajustement coulissant avec le trou fileté (21), l'épaulement A coulisse vers l'arrière jusqu'à être arrêté par le manchon de limitation (2), la distance de coulissement est établie à 5-10 mm, et l'extrémité arrière du manchon de limitation (2) est pourvue d'un filetage conique adapté et vissé dans un trou fileté conique d'une plaque osseuse.
PCT/CN2021/107563 2021-03-05 2021-07-21 Vis à os coulissante à pression et à verrouillage WO2022183664A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110243361.9 2021-03-05
CN202110243361.9A CN112842503A (zh) 2021-03-05 2021-03-05 一种滑动加压锁定接骨螺钉

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WO2022183664A1 true WO2022183664A1 (fr) 2022-09-09

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WO (1) WO2022183664A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112842503A (zh) * 2021-03-05 2021-05-28 山东航维骨科医疗器械股份有限公司 一种滑动加压锁定接骨螺钉

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201200469Y (zh) * 2008-04-28 2009-03-04 罗令 带内螺纹锁定孔的髓内钉
CN103654935A (zh) * 2012-09-06 2014-03-26 许家豪 具复位及加压功能的骨钉
US20150157366A1 (en) * 2010-07-20 2015-06-11 X-Spine Systems, Inc. Spinal facet compression screw with variable pitch thread zones and buttress head
CN205019151U (zh) * 2015-09-30 2016-02-10 浙江科惠医疗器械股份有限公司 一种锁定接骨板的万向锁定装置
CN207024106U (zh) * 2017-02-09 2018-02-23 嘉兴市第二医院 一种用于股骨颈骨折的内固定装置
WO2020116873A1 (fr) * 2018-12-07 2020-06-11 의료법인 명지의료재단 Dispositif de fixation osseuse de type à verrouillage par compression
CN211962169U (zh) * 2019-10-29 2020-11-20 大博医疗科技股份有限公司 一种空心螺钉组件结构及加压工具
CN112842503A (zh) * 2021-03-05 2021-05-28 山东航维骨科医疗器械股份有限公司 一种滑动加压锁定接骨螺钉

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201200469Y (zh) * 2008-04-28 2009-03-04 罗令 带内螺纹锁定孔的髓内钉
US20150157366A1 (en) * 2010-07-20 2015-06-11 X-Spine Systems, Inc. Spinal facet compression screw with variable pitch thread zones and buttress head
CN103654935A (zh) * 2012-09-06 2014-03-26 许家豪 具复位及加压功能的骨钉
CN205019151U (zh) * 2015-09-30 2016-02-10 浙江科惠医疗器械股份有限公司 一种锁定接骨板的万向锁定装置
CN207024106U (zh) * 2017-02-09 2018-02-23 嘉兴市第二医院 一种用于股骨颈骨折的内固定装置
WO2020116873A1 (fr) * 2018-12-07 2020-06-11 의료법인 명지의료재단 Dispositif de fixation osseuse de type à verrouillage par compression
CN211962169U (zh) * 2019-10-29 2020-11-20 大博医疗科技股份有限公司 一种空心螺钉组件结构及加压工具
CN112842503A (zh) * 2021-03-05 2021-05-28 山东航维骨科医疗器械股份有限公司 一种滑动加压锁定接骨螺钉

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