KR20020075782A - 뼈 나사 - Google Patents

뼈 나사 Download PDF

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KR20020075782A
KR20020075782A KR1020027008847A KR20027008847A KR20020075782A KR 20020075782 A KR20020075782 A KR 20020075782A KR 1020027008847 A KR1020027008847 A KR 1020027008847A KR 20027008847 A KR20027008847 A KR 20027008847A KR 20020075782 A KR20020075782 A KR 20020075782A
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tip
bone screw
thread
head
bone
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KR100773108B1 (ko
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루츠 비더만
위르겐 하름스
로날드 더블유. 린지
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비이더만 모테크 게엠베하
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86Pins or screws or threaded wires; nuts therefor
    • A61B17/864Pins or screws or threaded wires; nuts therefor hollow, e.g. with socket or cannulated
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86Pins or screws or threaded wires; nuts therefor
    • A61B17/8605Heads, i.e. proximal ends projecting from bone
    • A61B17/861Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver
    • A61B17/8615Heads, i.e. proximal ends projecting from bone specially shaped for gripping driver at the central region of the screw head
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86Pins or screws or threaded wires; nuts therefor
    • A61B17/8625Shanks, i.e. parts contacting bone tissue
    • A61B17/863Shanks, i.e. parts contacting bone tissue with thread interrupted or changing its form along shank, other than constant taper
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86Pins or screws or threaded wires; nuts therefor
    • A61B17/8625Shanks, i.e. parts contacting bone tissue
    • A61B17/8635Tips of screws
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86Pins or screws or threaded wires; nuts therefor
    • A61B17/8685Pins or screws or threaded wires; nuts therefor comprising multiple separate parts
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86Pins or screws or threaded wires; nuts therefor
    • A61B17/869Pins or screws or threaded wires; nuts therefor characterised by an open form, e.g. wire helix

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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)
  • Materials For Medical Uses (AREA)

Abstract

본 발명은 나사부(1)와, 제1 단부에 위치된 첨단부(6)와, 맞은편 제2 단부에 위치되고 스크루드라이버와 맞물리는 헤드(8)를 가지는 뼈 나사에 관한 것이다. 상기 뼈 나사는 뼈의 분쇄된 부분들을 함께 접합하기 위한 견인 요소로 작용한다. 나사가 뼈와 융합할 수 있게 하기 위해, 상기 나사부(1)가 관형이고 그의 벽이 다수의 오목부들을 가진다.

Description

뼈 나사{Bone Screw}
EP-A-0 682 917호로부터, 첨단부에서 약간 떨어져 시작하는 외부 뼈 나사를 가지고 있고, 또한 뼈가 붙을 수 있게 하는 오목부들을 외측 케이싱에 가지는 중공의 원통형 핀이 알려져 있다. 이 장치는, 미리 만들어진 뚫린 구멍에만 나사 결합이 가능하도록 구성되어 있다.
WO 97/37603호로부터, 안쪽으로 돌출하도록 천공에 의해 만들어진 다수의 구멍을 생크(shank)에 가지는 뼈 나사가 알려져 있다.
US-6,048,343호로부터, 챔퍼(chamfer)를 가진 뼈 나사를 구비한 뼈 나사 시스템이 알려져 있다.
본 발명은 나사부와, 제1 단부의 첨단부와, 맞은편 제2 단부에 위치되고 스크루드라이버와 맞물리는 헤드를 가지는 뼈 나사에 관한 것이다.
도 1은 본 발명의 뼈 나사의 분해도를 나타낸다.
도 2는 제1 실시예의 결합된 뼈 나사를 나타낸다.
도 3은 제2 실시예의 결합된 뼈 나사를 나타낸다.
도 4는 도 1의 일 부분의 확대도를 나타낸다.
도 5는 도 1의 일 부분의 확대 단면도를 나타낸다.
본 발명의 목적은 서두에 기술된 종류의 뼈 나사를 개선하는 있다.
이 목적은, 관형의 나사부가 그의 외부 벽에 뼈 나삿니를 가지고 있고 적어도 일 단부에 헤드 또는 첨단부가 나사 결합하기 위한 내부 나삿니를 가지는 뼈 나사에 의해 달성된다. 이것은 각종 헤드 또는 첨단부가 나사 결합할 수 있기 때문에 많은 변화성을 제공한다.
다른 실시형태에 따르면, 내부 나삿니가 나사부의 전체 길이에 걸쳐 연장한다. 그리하여, 나사부가 원하는 어떤 길이에도 맞도록 현장에서 절단될 수 있어 변화성이 매우 증가하는 장점이 달성된다.
또 다른 실시형태에 따르면, 뼈 나사는 관형의 나사부가 그의 외부 벽에 뼈 나삿니를 가지고 있고, 첨단부가 자동 절삭(self-cutting) 첨단부로 구성된 것을 특징으로 한다. 이것은 나사를 수용하기 위한 보어를 먼저 만들 필요성을 없앤다. 또 다른 실시형태는, 관형 나사부가 그의 외부 벽에 뼈 나삿니를 가지고 있고, 헤드 및/또는 첨단부가 상기 나사부의 양 단부에 미끄럼 끼워맞춤으로 삽입될 수 있도록 하는 치수로 된 것을 특징으로 한다. 따라서, 나사부가 원하는 길이에 맞도록 현장에서 절단될 수 있고, 원하는 종류의 헤드 또는 첨단부가 삽입될 수 있는 경우, 삽입하는 방법의 변화성이 증가된다.
본 발명의 추가 실시형태는 청구범위의 종속청구항에 기술되었다.
본 발명의 더 추가된 특징과 장점들은 도면에 의거한 실시예의 하기 설명으로부터 나타난다.
도 1에서 상세히 볼 수 있는 바와 같이, 본 발명의 뼈 나사는 관형의 나사부(1)를 가지고 있다. 이 뼈 나사는 그의 벽에 다수의 오목부(2)를 가지고 있고, 그 오목부는 도시된 실시예에서는 마름모꼴 모양으로 되어 있다. 그 마름모꼴 오목부들은 각각의 경우에 하나의 대칭축이 관의 대칭축에 나란히 연장하는 방식으로 정렬되어 있다. 제1 세트의 오목부(2)는 원주 방향으로 서로 떨어여 있다. 그 제1 세트의 오목부(2)에 축방향으로 인접하여 제2 세트의 오목부(3)가 배치되어 있고, 그 오목부(3)들은 원주 방향으로 볼 때 동일 간격으로 떨어져 있고, 축방향으로 볼 때는 그 제2 세트의 오목부(3)들 각각이 제1 세트의 오목부(2)들중 2개의 오목부 사이에 위치하도록 배치되어 있다. 이러한 패턴은 전체 표면에 걸쳐 계속된다. 그 오목부는 마름모꼴 모양으로 되어 있는 것이 바람직하지만, 다른 실시예에 따르면 다른 형태의 오목부, 특히 원형 오목부도 제공될 수 있다.
외벽에는 소위 뼈 나삿니(4)가 제공되어 있고, 그 나삿니는 통상의 뼈 나사의 것과 형상이 일치한다. 그 뼈 나삿니가 도 4에 상세히 나타나있다.
본 발명의 뼈 나사는 관의 한쪽 단부에 부착되는 첨단부(6)를 더 포함한다. 그 첨단부는 실제의 정점부와 생크(shank)(7)를 포함한다. 도시된 실시예에서는, 그 생크(7)은 외부 미터 나삿니(metric thread)를 가지고 있다. 관형의 나사부(1)는 그의 내부 벽에, 상기 외부 미터 나삿니에 대응하는 내부 미터 나삿니를 가지고 있어, 첨단부(6)와 관형의 나사부(1)는 도 2에서와 같은 방법으로 첨단부를 나사결합시킴으로써 서로 견고하게 연결된다. 상기 뼈 나삿니(4)는 오른 나사 경사를 가지는데 대하여 상기 2개의 외부 및 내부 미터 나삿니는 왼 나사로 되어 있다.
본 발명의 뼈 나사는, 도 1에 가장 잘 나타난 것과 같이 슬릿 또는 내부 6각형 홈이 있는 실제의 머리부(9)와 나삿니가 형성된 생크(11)를 가지는 헤드(8)를 포함한다. 나사부(1)를 형성하는 관은 그의 관련 단부에, 상기 헤드의 생크(11)의 나삿니와 맞물리는 내부 미터 나삿니를 가지고 있다. 또한, 상기 몸통(11)의 나삿니와 상기 나사부(1)의 내부 나삿니는 왼 나삿니로 구성되는 것이 바람직하다. 헤드(8)는 도 2에서와 같은 방법으로 나사부(1) 안에 견고하게 나사 결합된다.
도 3에 나타낸 실시예는, 첨단부(12)가 자동 절삭(self-cutting) 첨단부로서 구성된 점에서 제1 실시예와 다르다. 본 실시예와 제1 실시예에서도 첨단부는 각각의 경우 도면들에서 나타낸 방법으로 완성된다.
상기 실시예들에서, 첨단부와 헤드는 나사 결합된다. 나사부의 내부 미터 나삿니는 각각의 경우 헤드와 첨단부가 나사 결합될 수 있도록 하는 방식으로 나사부의 두개의 단부에 걸쳐 연장한다.
바람직한 실시예에 의하면, 내부 나삿니는 나사부의 전체 길이에 걸쳐 연장한다. 이것은 관이 어떠한 길이로도 절단될 수 있어 원하는 길이의 나사를 얻을 수 있고, 저장량을 상당히 감소시킬 수 있는 장점을 가진다.
다른 실시예에 의하면, 나사부(1)의 내부 벽과 각각의 생크(7, 11)는 각각의 나삿니 없이 구성되고, 첨단부와 헤드가 나사부(1)에 미끄럼 끼워맞춤으로 견고하게 연결되도록 그들의 치수가 정해진다.
선택적으로는, 나삿니가 일 단부에 제공될 수 있고, 관련 요소, 다시 말해, 첨단부 또는 헤드가 상응하는 나삿니를 가질 수 있고 나사 결합될 수 있어, 이 단부에서 소정의 길이로 관을 자르는 것이 여전히 가능하며, 다른 요소, 다시 말해 첨단부 또는 헤드가 미끄럼 끼워맞춤으로 부착될 수 있다.
뼈 나사를 형성하는 부품들은 타티늄으로 만들어지는 것이 바람직하다.
또한, 첨단부와 헤드를 나사 결합시킬 수 있다는 것은, 이렇게 형성된 나사의 움푹한 곳에 뼈 물질 또는 몇몇 다른 성장촉진 물질이 채워질 수 있어, 치료 과정을 상당히 가속화시키는 장점을 제공한다.

Claims (8)

  1. 튜브로 구성되고 벽에 다수의 오목부(2,3)를 가진 나사부(1)와, 제1 단부의 첨단부(6, 12)와, 맞은편 제2 단부에 제공되고 스크루드라이버와 맞물리는 헤드(8)를 가지는 뼈 나사에 있어서, 상기 나사부(1)가 그의 외부 벽에 뼈 나삿니(4)를 가지고 있고, 적어도 일 단부에는 상기 헤드(8) 또는 상기 첨단부(6, 12)가 나사 결합하기 위한 내부 나삿니를 가지는 것을 특징으로 하는 뼈 나사.
  2. 제 1 항에 있어서, 상기 내부 나삿니가 미터 나삿니(metric thread)(5)로 구성된 것을 특징으로 하는 뼈 나사.
  3. 제 1 항 또는 제 2 항에 있어서, 상기 첨단부(12)가 자동 절삭(self-cutting) 첨단부로 구성된 것을 특징으로 하는 뼈 나사.
  4. 제 1 항 내지 제 3 항중 어느 한 항에 있어서, 상기 내부 나삿니가 상기 나사부(1)의 전체 길이에 걸쳐 연장하는 것을 특징으로 하는 뼈 나사.
  5. 튜브로 구성되고 벽에 다수의 오목부(2,3)를 가진 나사부(1)와, 제1 단부의 첨단부(12)와, 맞은편 제2 단부에 제공되고 스크루드라이버와 맞물리는 헤드(8)를 가지는 뼈 나사에 있어서, 상기 나사부(1)가 그의 외부 벽에 뼈 나삿니(4)를 가지고 있고, 상기 첨단부(12)가 자동 절삭 첨단부로 구성된 것을 특징으로 하는 뼈 나사.
  6. 제 5 항에 있어서, 상기 나사부가 적어도 일 단부에, 상기 헤드(8) 또는 상기 첨단부(12)가 나사 결합하기 위한 내부 나삿니를 가지는 것을 특징으로 하는 뼈 나사.
  7. 튜브로 구성되고 벽에 다수의 오목부(2,3)를 가진 나사부(1)와, 제1 단부의 첨단부(6, 12)와, 맞은편 제2 단부에 제공되고 스크루드라이버와 맞물리는 헤드(8)를 가지는 뼈 나사에 있어서, 상기 나사부(1)가 그의 외부 벽에 뼈 나삿니(4)를 가지고 있고, 상기 헤드(8) 및/또는 상기 첨단부(6, 12)가 상기 나사부(1)의 양 단부에 미끄럼 끼워맞춤으로 삽입될 수 있도록 하는 치수로 된 것을 특징으로 하는 뼈 나사.
  8. 제 7 항에 있어서, 상기 첨단부(12)가 자동 절삭 첨단부로 구성된 것을 특징으로 하는 뼈 나사.
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DE10055891A1 (de) 2002-06-06
US8137389B2 (en) 2012-03-20
WO2002038054A3 (de) 2002-07-04
US20140081338A1 (en) 2014-03-20
US20040015172A1 (en) 2004-01-22
KR100773108B1 (ko) 2007-11-02
JP3929897B2 (ja) 2007-06-13
DE50100598D1 (de) 2003-10-16
US8968372B2 (en) 2015-03-03
ATE249176T1 (de) 2003-09-15
EP1246578A2 (de) 2002-10-09
WO2002038054A2 (de) 2002-05-16
US20150320469A1 (en) 2015-11-12
JP2004512895A (ja) 2004-04-30
US9468483B2 (en) 2016-10-18
EP1246578B1 (de) 2003-09-10
US20120265256A1 (en) 2012-10-18

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