WO2022183664A1 - Sliding, pressurising and locking bone screw - Google Patents

Sliding, pressurising and locking bone screw 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
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Prior art keywords
thread
sliding
screw
sliding shaft
threaded hole
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PCT/CN2021/107563
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French (fr)
Chinese (zh)
Inventor
余斌
孙福文
孙硕
孙德修
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山东航维骨科医疗器械股份有限公司
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Publication of WO2022183664A1 publication Critical patent/WO2022183664A1/en

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    • 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.

Abstract

A sliding, pressurising and locking bone screw, comprising a bone screw (1) and a limiting sleeve (2). The front end of the bone screw (1) is provided with thread A, the rear end of thread A being provided with a polished rod, the rear end of the polished rod being provided with a sliding shaft (11), a step A being disposed between the polished rod and the sliding shaft (11), the outer edge of the sliding shaft (11) being smaller than the polished rod, the rear end of the sliding shaft (11) being provided with a screw head (12), a step B being disposed between the screw head (12) and the sliding shaft (11), the outer edge of the screw head (12) being larger than the sliding shaft (11), the screw head (12) being provided with thread B, and the rotation direction of thread B being opposite to thread A. The limiting sleeve (2) is provided with a threaded hole (21), the threaded hole (21) matching thread B, the rear end of the threaded hole (21) being provided with a stepped hole, and the screw head (12) being screwed backwards through the threaded hole (21) and placed in the stepped hole, the sliding shaft (11) being disposed in the threaded hole (21) and having a sliding fit with the threaded hole (21), step A sliding backward until stopped by the limiting sleeve (2), the sliding distance being set to 5-10 mm, and the rear end of the limiting sleeve (2) being provided with a tapering thread matched and screwed into a tapering threaded hole of a bone plate.

Description

一种滑动加压锁定接骨螺钉A sliding compression locking bone screw 技术领域technical field
本发明提供了一种医疗器械，尤其是一种滑动加压锁定接骨螺钉。The invention provides a medical instrument, especially a sliding compression locking bone screw.
背景技术Background technique
目前临床上常用鹅头钉或PFAN髓内钉治疗股骨颈骨折患者，这两种医疗器械均存在不同的缺陷。鹅头钉的缺陷在于其所用接骨螺钉的螺纹设置在骨折线两端，没有术后加压功能，因而不能有效促进骨折面愈合。PFAN髓内钉虽然具有术后加压功能，但需要术后人工手动加压。At present, 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. Although the PFAN intramedullary nail has the function of postoperative compression, it requires manual manual compression after surgery.
发明内容SUMMARY OF THE INVENTION
本发明提供了一种滑动加压锁定接骨螺钉，克服了上述缺陷。其主要包括接骨螺钉和限位套。The present invention provides a sliding compression locking bone screw, which overcomes the above-mentioned defects. It mainly includes bone screws and limit sleeves.
所述接骨螺钉前端设有螺纹A，用于旋入骨折线一端的股骨头，所述螺纹A后端设有光杆置于骨折线部位，所述光杆后端设有滑动轴，所述光杆与滑动轴之间设有台阶A，所述滑动轴外缘小于光杆，所述滑动轴后端设有螺钉头，所述螺钉头与滑动轴之间设有台阶B，所述螺钉头外缘大于滑动轴，所述螺钉头设有螺纹B，所述螺纹B的旋向与螺纹A相反，所述螺纹B设为矩形螺纹。所述限位套设有螺纹孔，所述螺纹孔与所述螺纹B配合设置，所述螺纹孔后端设有台阶孔，所述台阶孔后端设有工具孔，所述螺钉头向后旋过所述螺纹孔置于台阶孔内，所述滑动轴设于所述螺纹孔内并与螺纹孔滑动配合，所述台阶A向后滑动至所述限位套前端停止，所述滑动的距离设为5～10mm，所述限位套后端设有锥螺纹，配合旋入接骨板的锥螺纹孔或配合旋入CN201595922U万向锁定接骨板的开口螺帽的锥螺纹孔。手术时，按照所述螺纹A的旋向向前旋动所述接骨螺钉，所述螺钉头止于所述台阶孔底端，继续旋进所述接骨螺钉将对股骨颈两断端进行拉近并加压。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. There is a step A between the sliding shafts, 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, and there is a step B between the screw head and the sliding shaft, and the outer edge of the screw head is larger than For the sliding shaft, 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. During the operation, rotate the bone screw forward according to the rotation direction of the thread A, 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.
进一步，本发明一种滑动加压锁定接骨螺钉，主要包括接骨螺钉A和限位套A。Further, a sliding compression locking bone screw of the present invention mainly includes a bone screw A and a limiting sleeve A.
所述接骨螺钉A前端设有螺纹C，用于旋入骨折线一端的股骨头，所述螺纹C后段被削去牙顶形成外径小于所述螺纹C的螺杆，置于骨折线部位，所述螺杆后端设有滑动轴，所述螺杆与滑动轴之间设有台阶A，所述滑动轴外缘小于螺杆，所述滑动轴后端设有螺钉头A，所述螺钉头A与滑动轴之间设有台阶B，所述螺钉头A外缘大于滑动轴。所述限位套A设有螺纹孔A，所述螺纹孔A后端设有台阶孔，所述螺纹C向前配合旋过所述螺纹孔A，所述滑动轴滑动配合穿过所述螺纹孔A，所述螺钉头A向前运动时止于台阶孔底端，所述台阶孔后端设有工具孔，所述台阶A向后滑动至所述限位套A前端停止，所述滑动的距离设为5～10mm，所述限位套A后端设有锥螺纹，配合旋入接骨板的锁定螺纹孔或配合旋入CN201595922U万向锁定接骨板的开口螺帽的锥螺纹孔。手术时，按照所述螺纹C的旋向向前旋动所述接骨螺钉A，所述螺钉头A止于所述台阶孔底端，继续旋进将对股骨颈两断端进行拉近并加压。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 ends of the femoral neck closer and tighten. pressure.
手术时，一般取两枚或三枚也可多枚本发明一种滑动加压锁定接骨螺钉，配合接骨板对断裂的股骨颈进行接骨治疗。During the operation, generally two or three or more than one sliding compression locking bone screw of the present invention is taken, and the bone fixing plate is used for bone fixing treatment of the fractured femoral neck.
有益效果：通过一种滑动加压锁定接骨螺钉，即保持锁定螺钉的作用，又增加了术中手动加压、术后滑动加压的功能，且符合骨折断端受到加压刺激后加速愈合的理论，实现了术中股骨头、股骨颈手动加压，术后股骨头、股骨颈自动加压的目的，既有利于牢固固定术又加速愈合，而且通过限制加压距离的设计，减少了骨折线部位骨细胞过量吸收而使间隙增大，进而引起的股延迟愈合、骨不连等缺陷，使患者避免二次手术之痛苦。Beneficial effect: Through a sliding compression locking bone screw, the function of the locking screw is maintained, and the functions of manual compression during operation and sliding compression after operation are increased, and it is in line with the accelerated healing after the fracture end is stimulated by compression. In theory, the purpose of manual compression of the femoral head and femoral neck during the operation and automatic compression of the femoral head and femoral neck after the operation is realized, which is not only conducive to firm fixation and accelerated healing, but also reduces the fracture through the design of limiting the compression distance. Excessive absorption of bone cells at the line site increases the gap, which in turn causes defects such as delayed femoral union and nonunion, so that patients can avoid the pain of secondary surgery.
附图说明Description of drawings
图1是本发明一种滑动加压锁定接骨螺钉第一种实施方式的结构示意图。FIG. 1 is a schematic structural diagram of the first embodiment of a sliding compression locking bone screw according to the present invention.
图2是本发明一种滑动加压锁定接骨螺钉第二种实施方式的结构示意图。Fig. 2 is a schematic structural diagram of the second embodiment of a sliding compression locking bone screw according to the present invention.
具体实施方式Detailed ways
下面结合附图给出的实施例进一步说明本发明。The present invention is further described below in conjunction with the embodiments given in the accompanying drawings.
图1为本发明一种滑动加压锁定接骨螺钉第一种实施方式的结构示意图，其主要包括接骨螺钉1和限位套2。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 .
所述接骨螺钉1前端设有螺纹A，用于旋入骨折线一端的股骨头，所述螺纹A后端设有光杆置于骨折线部位，所述光杆后端设有滑动轴11，所述光杆与滑动轴11之间设有台阶A，所述滑动轴11外缘小于光杆，所述滑动轴11后端设有螺钉头12，所述螺钉头12与滑动轴11之间设有台阶B，所述螺钉头11外缘大于滑动轴11，所述螺钉头11设有螺纹B，所述螺纹B的旋向与螺纹A相反，所述螺纹B设为矩形螺纹。所述限位套2设有螺纹孔21，所述螺纹孔21与所述螺纹B配合设置，所述螺纹孔21后端设有台阶孔，所述台阶孔后端设有工具孔，所述螺钉头12向后旋过所述螺纹孔21置于台阶孔内，所述滑动轴11设于所述螺纹孔21内并与螺纹孔21滑动配合，所述台阶A向后滑动至所述限位套2前端停止，所述滑动的距离设为5～10mm，所述限位套2后端设有锥螺纹，配合旋入CN201595922U万向锁定接骨板的开口螺帽3的锥螺纹孔。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. There is a step A between the polished rod and the sliding shaft 11, 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, and 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, and 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.
图2是本发明一种滑动加压锁定接骨螺钉第二种实施方式的结构示意图，其主要包括接骨螺钉A4和限位套A5。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.
所述接骨螺钉A4前端设有螺纹C，用于旋入骨折线一端的股骨头，所述螺纹C后段被削去牙顶形成外径小于所述螺纹C的螺杆，置于骨折线部位，所述螺杆后端设有滑动轴41，所述螺杆与滑动轴41之间设有台阶A，所述滑动轴41外缘小于螺杆，所述滑动轴41后端设有螺钉头A42，所述螺钉头A42与滑动轴41之间设有台阶B，所述螺钉头A42外缘大于滑动轴41。所述限位套A5设有螺纹孔A51，所述螺纹孔A51后端设有台阶孔，所述螺纹C向前旋过所述螺纹孔A51，所述滑动轴41滑动配合穿过所述螺纹孔A51，所述螺钉头A42向前运动时止于台阶孔底端，所述台阶孔后端设有工具孔，所述台阶A向后滑动至所述限位套A5前端停止，所述滑动的距离设为5～10mm，所述限位套A5后端设有锥螺纹，配合旋入接骨板的锁定螺纹孔或配合旋入CN201595922U万向锁定接骨板的开口螺帽3的锥螺纹孔。手术时，按照所述螺纹C的旋向向前旋动所述接骨螺钉A，所述螺钉头A止于所述台阶孔底端，继续旋进将对股骨颈两断端进行拉近并加压。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. During the operation, rotate the bone screw A forward according to the rotation direction of the thread C, and the screw head A stops at the bottom end of the stepped hole, and the two broken ends of the femoral neck will be shortened and tightened by continuing to screw in. pressure.

Claims (8)

  1. 一种滑动加压锁定接骨螺钉，主要包括接骨螺钉(1)，其特征在于还设有限位套(2)。A sliding compression locking bone screw mainly includes a bone screw (1), and is characterized in that a limit sleeve (2) is further provided.
  2. 根据权利要求1所述的一种滑动加压锁定接骨螺钉，其特征在于所述接骨螺钉(1)前端设有螺纹A，所述螺纹A后端设有光杆，所述光杆后端设有滑动轴(11)，所述滑动轴(11)后端设有螺钉头(12)，所述螺钉头(12)设有螺纹B。The sliding compression locking bone screw according to claim 1, characterized in that the front end of the bone screw (1) is provided with a thread A, the rear end of the thread A is provided with a polished rod, and the rear end of the polished rod is provided with a sliding A shaft (11), the rear end of the sliding shaft (11) is provided with a screw head (12), and the screw head (12) is provided with a thread B.
  3. 根据权利要求2所述的一种滑动加压锁定接骨螺钉，其特征在于所述螺纹B的旋向与螺纹A相反。A sliding compression locking bone screw according to claim 2, wherein the rotation direction of the thread B is opposite to that of the thread A.
  4. 根据权利要求2所述的一种滑动加压锁定接骨螺钉，其特征在于所述螺纹B设为矩形螺纹。A sliding compression locking bone screw according to claim 2, characterized in that the thread B is a rectangular thread.
  5. 根据权利要求2所述的一种滑动加压锁定接骨螺钉，其特征在于所述光杆与滑动轴(11)之间设有台阶A，所述滑动轴(11)外缘小于光杆，所述螺钉头(12)与滑动轴(11)之间设有台阶B，所述螺钉头(12)外缘大于滑动轴(11)。A sliding compression locking bone screw according to claim 2, characterized in that a step A is provided between the polished rod and the sliding shaft (11), the outer edge of the sliding shaft (11) is smaller than the polished rod, and the screw A step B is provided between the head (12) and the sliding shaft (11), and the outer edge of the screw head (12) is larger than the sliding shaft (11).
  6. 根据权利要求2所述的一种滑动加压锁定接骨螺钉，其特征在于所述限位套(2)设有螺纹孔(21)，所述螺纹孔(21)与所述螺纹B配合设置，所述螺纹孔(21)后端设有台阶孔，所述限位套(2)后端设有锥螺纹。The sliding compression locking bone screw according to claim 2, characterized in that the limiting sleeve (2) is provided with a threaded hole (21), and 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 limiting sleeve (2) is provided with a tapered thread.
  7. 根据权利要求6所述的一种滑动加压锁定接骨螺钉，其特征在于所述螺钉头(12)向后旋过所述螺纹孔(21)置于台阶孔内，所述滑动轴(11)设于所述螺纹孔(21)内，所述滑动轴(11)与螺纹孔(21)滑动配合，所述台阶A向后滑动至所述限位套(2)停止，所述滑动的距离设为5～10mm。A sliding compression locking bone screw according to claim 6, characterized in that the screw head (12) is screwed backward through the threaded hole (21) and placed in the stepped hole, and the sliding shaft (11) is arranged in the threaded hole (21), the sliding shaft (11) is slidably matched with the threaded hole (21), the step A slides backward until the limit sleeve (2) stops, and the sliding distance Set to 5 to 10 mm.
  8. 一种滑动加压锁定接骨螺钉，其特征在于包括接骨螺钉A(4)和限位套A(5)，所述接骨螺钉A(4)前端设有螺纹C，所述螺纹C后段被削去牙顶形成外径小于所述螺纹C的螺杆，置于骨折线部位，所述螺杆后端设有滑动轴(41)，所述螺杆与滑动轴(41)之间设有台阶A，所述滑动轴(41)外缘小于螺杆，所述滑动轴(41)后端设有螺钉头A(42)，所述螺 钉头A(42)与滑动轴(41)之间设有台阶B，所述螺钉头A(42)外缘大于滑动轴(41)，所述限位套A(5)设有螺纹孔A(51)，所述螺纹孔A(51)后端设有台阶孔，所述螺纹C向前旋过所述螺纹孔A(51)，所述滑动轴(41)滑动配合穿过所述螺纹孔A(51)，所述螺钉头A(42)向前运动时止于台阶孔底端，所述台阶A向后滑动至所述限位套A(5)停止，所述滑动的距离设为5～10mm，所述限位套A(5)后端设有锥螺纹。A sliding compression locking bone screw is characterized by comprising a bone screw A (4) and a limit sleeve A (5), the front end of the bone screw A (4) is provided with a thread C, and the rear section of the thread C is cut The crest is removed to form a screw with an outer diameter smaller than the thread C, which is placed at the fracture line. The outer edge of the sliding shaft (41) is smaller than the screw rod, the rear end of the sliding shaft (41) is provided with a screw head A (42), and a step B is provided between the screw head A (42) and the sliding shaft (41), The outer edge of the screw head A (42) is larger than the sliding shaft (41). The thread C is screwed forward through the threaded hole A (51), the sliding shaft (41) is slidably fitted through the threaded hole A (51), and the screw head A (42) stops when it moves forward. At the bottom end of the step hole, the step A slides backward until the limit sleeve A (5) stops. thread.
PCT/CN2021/107563 2021-03-05 2021-07-21 Sliding, pressurising and locking bone screw WO2022183664A1 (en)

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CN112842503A (en) * 2021-03-05 2021-05-28 山东航维骨科医疗器械股份有限公司 Sliding pressure locking bone screw

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CN211962169U (en) * 2019-10-29 2020-11-20 大博医疗科技股份有限公司 Hollow screw assembly structure and pressurizing tool
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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 (en) * 2012-09-06 2014-03-26 许家豪 Bone peg with reposition and pressurization functions
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