KR0128371B1 - 뼈 나사 - Google Patents
뼈 나사Info
- Publication number
- KR0128371B1 KR0128371B1 KR1019940004662A KR19940004662A KR0128371B1 KR 0128371 B1 KR0128371 B1 KR 0128371B1 KR 1019940004662 A KR1019940004662 A KR 1019940004662A KR 19940004662 A KR19940004662 A KR 19940004662A KR 0128371 B1 KR0128371 B1 KR 0128371B1
- Authority
- KR
- South Korea
- Prior art keywords
- head
- screw
- bore
- receiver member
- rod
- Prior art date
Links
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
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7035—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other
- A61B17/7037—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other wherein pivoting is blocked when the rod is clamped
-
- 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
- A61B17/70—Spinal positioners or stabilisers ; Bone 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, 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
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7035—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other
-
- 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
Landscapes
- 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
뼈 나사는 리시버 부재(5), 나삿니 부분(2)과 구면 세그먼트 모양을 한 부분을 갖는 헤드(3)를 갖는 나사부재(1)를 포함한다. 리시버 부재(5)는 리시버 나사부재의 상대적인 조정 및 둥근 로드에 리시버 부재의 연결을 허용하기 위한 내부 나삿니(1)를 포함한다. 압력수단(12)은 헤드(3)상에서 작동하고, 로드(16)는 압력수단의 표면에 위치한다. 이 배열은 로드 로킹 너트(13)의 수단에 의하여 고정되어지고, 로크 너트(14)는 외부 나삿니(11)상에서 죄어진다.
Description
제1도는 본 발명의 제1실시예에 따른 뼈 나사를 분해하여 나타난 부분단면도.
제2도는 조립된 상태의 제1도의 뼈 나사를 확대하여 나타낸 부분단면도.
제3도는 본 발명의 제2실시예에 따른 뼈 나사를 분해하여 나타낸 부분단면도.
제4도는 조립된 상태의 제3도의 뼈 나사를 확대하여 나타낸 부분단면도.
* 도면의 주요부분에 대한 부호의 설명*
1 : 나사부재3 : 헤드
5,5' : 리시버 부재7 : 제1보어
8 : 제2보어10 : 내부 나삿니
11 : 외부 나삿니12 : 헤드 고정 너트
13 : 로드 고정 너트14 : 로크 너트
17 : 원통형 부분18 : 압력 디스크
본 발명은, 로드(rod)와 뼈를 연결하기 위한 뼈 나사에 관한 것이다.
이러한 종류의 뼈 나사가 독일 특허 명세서 제39 23 966호에 개시되어 있다. 이러한 공지의 뼈 나사는, 구면형상의 부분을 가진 헤드와 나삿니 부분으로 이루어진 나사부재와, 고정하기 위한 로드와 상기 나사부재의 헤드를 수용하기 위한 원통형의 리시버 부재를 포함하고, 상기 리시버 부재는, 제1단부와, 상기 나사부재의 나삿니 부분을 통과시키기 위해 제1단부와 제공된 제1보어와, 그 제1보어에 인접한 내측 위치에 제공되어 상기 나사부재에 헤드를 수용하는 공동(空洞)의 구면(球面)형상 부분과, 상기 나사부재와 그의 헤드를 끼워넣기 위하여 상기 제1보어의 반대쪽으로 개방된 제2보어를 가지고 있다. 뼈 나사에 연결된 로드는 나삿니를 가지고 있고, 그 나삿니가 있는 로드상에 설치되고 리시버 부재의 외부표면에 결합하는 2개의 너트에 의해 연결된다.
유럽특허 명세서 제0 465 158호는, 뼈에 박힐 샤프트와, 로드와 연결된 헤드를 가진 고정부재를 개시하고 있다. 그 헤드는, 샤프트에 연결되는 기부와, 로드를 수용하기 위한 채널을 형성하는 두개의 자유 다리부를 가지고 실질적으로 U자형의 단면으로 되어 있다. 또한, 제1내부 나삿니가 안쪽에서 다리부의 방향으로 뻗어 있고, 다리부의 외측을 감싸는 포위부재와 고정부재가 제공되어 있다. 그 고정부재와 포위부재는, 두개의 자유 다리부의 내부 나삿니에 나사결합되는 중간 삽입체를 통하여 연결되어 있다. 이러한 공지의 고정수단은, 먼저 중간 삽입체가 포위부재로 고정된 후에만 고정부재가 나사결합되는 것을 요한다.
유럽특허 명세서 제443,892호는, 외부 링이 헤드의 자유 다리부 둘레에 배치되고 그 외부 링이 채널에 맞물리는 텅(toungue)을 포함하는 장치를 개시하고 있다. 고정된 때 상기 텅에 작용하는 고정부재가 내부 나삿니에 나사결합된다. 이 장치를 다루기 위해 포위부재와 고정부재를 별개로 조작하는 것이 제공되어 있지 않고, 또한, 나사고정도 제공되어 있지 않고, 굽은 로드의 고정은 불가능하다.
본 발명의 목적은, 상기 언급된 결점을 제거하여, 특히 둥근 로드의 고정중에 척추의 교정처리를 행하는 데 보편적으로 사용될 수 있는 개선된 뼈 나사를 제공하는데 있다. 또한 본 발명의 다른 목적은, 굽은 풍량등에 대해서도 사용될 수 있는 뼈 나사를 제공하는데 있다.
본 발명에 따르면, 뼈와 로드를 연결하기 위한 뼈 나사로서, 나삿니 부분과 구면 형상의 부분을 가진 헤드로 이루어진 나사부재와, 상기 나사부재의 상기 헤드와 상기 로드를 수용하기 위한 원통형의 리시버(receiver) 부재로서, 제1단부와, 상기 나삿니 부분을 통과시키기 위해 상기 제1단부에 제공된 제1보어와, 상기 제1보어에 내측으로 인접한 위치에서 상기 헤드를 수용하는 공동의 구면부분과, 상기 나사부재와 그의 헤드를 끼워 넣기 위해 제1보어의 반대쪽으로 개방된 제2보어, 및 외부 나삿니와 내부 나삿니가 형성된 두 개의 자유 다리부를 제공하도록 실질적으로 U자형의 리세스가 형성된 부분을 포함하는 리시버 부재와; 상기 리시버 부재내에 끼워 넣어진 상기 나사부재의 헤드에 작용하는 압력수단과; 상기 리시버 부재의 상기 U자형 리세스내에 수용된 상기 로드를 고정시키기 위해 상기 리시버 부재의 개방단부에서 상기 리시버 부재의 상기 다리부의 상기 내부 나삿니에 나사결합되는 고정나사와, 상기 리시버 부재의 상기 다리부의 상기 외부 나삿니에 나사결합되는 로크 너트를 포함하는 뼈 나사가 제공된다.
이하, 본 발명의 실시형태를 첨부도면을 참조하여 상세히 설명한다.
제1도는 본 발명의 제1실시예를 따른 뼈 나사를 분해하여 나타내는 것으로써, 이 뼈 나사는, 나삿니 부분(2)과 헤드(3)를 가진 나사부재(1)를 포함한다. 헤드(3)는 나삿니 부분(2)에 인접한 쪽에 구면(球面)형상부분을 가지고 있고, 나삿니 부분(2)의 반대쪽의 헤드(3)의 단부에는, 나사드라이버와 같은 6각형의 소켓 스크루키이(key)가 결합하기 위한 결합구멍(4)이 나삿니 부분(2)의 축과 동축으로 형성되어 있다.
또한, 뼈 나사는 원통형의 리시버(receiver) 부재(5)를 포함한다. 그 리시버 부재(5)는, 그의 일 단부에 형성된 축방향의 제1보어(bore)(7)와, 그 제1보어(7)와 동축으로 형성되고 제1보어의 반대편 리시버 부재의 단부에서 개방된 제2보어(8)를 가지고 있다. 제1보어(7)는 나삿니 부분(2)의 직경보다 크고 헤드(3)의 직경보다 작은 직경을 가지며, 제2보어(8)는 그의 개방단부를 통해 나사부재(1)를 통과시키기 위한 크기의 직경을 가진다. 그리하여, 나사부재(1)의 나삿니 부분(2)이 제1보어(7)를 통하여 안내되고, 헤드(3)가 제1보어에 인접한 리시버 부재의 내측 제2보어(8)의 기부에 맞물린다. 제1보어(7)와 제2보어(8) 사이에는, 제1보어에 바로 인접하여 제1보어의 직경보다 작은 직경의 동축 부분(9)이 제공되어 있고, 그 동축 부분(9)은 나삿니를 가지지 않고 개방단부쪽으로 향한 구면(球面)을 가지고 있다. 그 구면의 반경은 헤드(3)의 구면형상 부분의 반경과 실질적으로 상응한다. 제2보어(8)는, 상기 동축 부분(9)으로부터 자유 단부까지 동축으로 연장하는 내부 나삿니(10)를 가지고 있다.
리시버 부재(5)는 또한, 그 리시버 부재의 중심에 대하여 대칭인 U자형 리세스(recess)(6)를 가지고 있고, 그 U자형 리세스는, 그의 기부가 제1보어(7)를 향하고 그의 2개의 측면 다리부들이 제1보어의 반대편 개방단부로 연장하도록 하는 형상으로 되어 있다. U자형 리세스(6)의 다리부들의 자유 단부에는 외부 나삿니(11)가 제공되어 있다.
본 발명에 따른 뼈 나사는 또한, 헤드 고정 너트(12)와 로드 고정 너트(13)를 포함하고, 그 고정 너트들 모두는 리시버 부재(5)의 내부 나삿니(10)에 대응하는 외부 나삿니를 가지고 있다. 헤드 고정 너트(12)는 헤드(3)로 향한 그의 측면에 구면(球面) 형상의 카운터성크(countersunk)부분(15)를 가지고 있다. 헤드 고정 너트(12)와 로드 고정 너트(13) 모두는, 6각형 소켓 스크루 키이가 맞물리기 위한 6각형 소켓 구멍을 각각 가지고 있다. 또한, 리시버 부재(5)의 외부 나삿니(11)에 나사 결합하는 내부 나삿니를 가진 로크 너트(14)가 제공되어 있다.
이 실시예에 따른 뼈 나사의 작용을 설명하면 다음과 같다. 나사부재(1)를 리시버부재(5)의 제2보어(8)의 개방단부를 통하여 제1보어(7)내로 통과시키고, 6각형 소켓 스크루 키이를 그 나사부재의 헤드의 결합구멍(4)에 끼워 회전시킴으로써 나사부재(1)를 척추에 나사고정시킨다. 그후, 6각형 소켓 스크루 키이에 의해 헤드 고정 너트(12)를 먼저 느슨하게 헤드(3)쪽으로 조인다. 그 다음, 리시버 부재(5)가, 뼈 나사와 연결될 둥근 로드(16)를 수용하기 위해 정확하게 위치조정된다. 이와같이 위치가 조정된 후, 나사부재(1)가 리시버 부재(5)에 견고하게 연결되도록 하는 정도로 헤드 고정 너트(12)를 조인다. 그 후, 둥근 로드(16)를 리시버 부재(5)의 U자형 리세스(6)내로 최종적으로 끼워 넣은 다음, 로드 고정 너트(13)를 끼워 조임으로써 그 둥근로드(16)를 위치고정시킨다. 그후, 로크 너트(14)를 제2도에 나타낸 방식으로 U자형 리세스(6)의 자유 다리부들의 외부 나삿니(11)에 나사결합시킨다. 로드 고정 너트(13) 뿐만 아니라 로크너트(14)는, 그들이 둥근 로드(16)에 소망의 체결력을 가할 때까지 돌려진다. 따라서, 둥근 로드(16)에 작용하는 힘이 로드 고정 너트(13)이나 로크 너트(14)에 의해 독립적으로 조정될 수 있다는 잇점이 달성된다. 또한, 너트고정에 의한 최종적인 체결 및 나사 보유가 얻어진다.
로드 고정 너트(13)와 로크 너트(14)에 의해 달성되는 별개의 체결작용은 직선의 로드보다는 굽어진 로드를 체결할 때 특히 중요하다. 이 경우, 정확한 체결은 양 너트의 독립적인 조정에 의해서만 가능하다.
제2도에 잘 나타내어진 바와 같이, 리시버 부재(5)의 제1보어(7)는 그의 외측 직경이 동축 부분(9)에 인접한 쪽의 직경보다 크도록 경사지게 원추형상으로 형성되어 있어, 나사부재(1)가 제2도에 나타낸 방식으로 리시버 부재(5)의 대칭축에 대하여 일정 각도범위내에서 피벗할 수 있게 되어 있다.
다음에, 제3도와 제4도에 나타낸 본 발명의 제2실시예에 따른 뼈 나사에 대하여 설명한다. 상기한 제1실시예의 것에 대응하는 부품들이 동일한 참조부호로 나타내어져 있다.
나사부재(1), 로드 고정 너트(13) 및 로크 너트(14)는 제1실시예의 것과 정확히 대응한다. 상기한 제1실시예와는 달리, 본 실시예에서는, 리시버 부재(5')내에서는 동축 부분(9)과 내부 나삿니(10) 사이에, 내부 나삿니가 없는 원통형 부분(17)이 제공되어 있고, 헤드 고정 너트 대신에 압력 디스크(18)가 제공되어 있다. 그 압력 디스크(18)는 헤드 (3)로 향한 쪽에 구면 형상의 카운터성크 부분(19)을 가지도록 형성되어 있다. 그 카운터성크 부분(19)의 반경은 헤드(3)의 구면형상 부분의 반경과 실질적으로 상응한다. 압력 디스크(18)의 외경은, 그 압력 디스크(18)가 리시버 부재의 원통형 부분(17)내에서 미끄러져 그 원통형 부분(17)내에서 나사부재(1)의 헤드(3)쪽으로 이동할 수 있도록 하는 치수로 선택된다. 양 실시예의 다른 모든 요소들은 동일하다. 압력 디스크(18)는, 헤드(3)의 결합구멍(4)에 접근할 수 있게 하고 압력 디스크(18)를 잡는 것을 용이하게 하는 동축 보어(20)를 가지고 있는 것이 바람직하다.
이 실시예에 따른 뼈 나사의 작용을 설명하면 다음과 같다. 나사부재(1)를 리시버 부재(5')내에 끼워 넣은 후, 그 나사부재를 먼저 제1실시예에서와 같이 척추에 나사고정시킨다. 그 후, 압력 디스크(18)와 로드(16)를 차례로 끼워 넣는다. 제1실시예에서와 달리, 이 단계에서 나사부재(1)와 리시버 부재(5')는 서로에 대하여 자유롭게 피벗할 수 있고, 로드 고정 너트(13)가 리시버 부재내에 나사결합된 후에만, 나사부재(1)와 리시버 부재(5')가 서로에 대해 고정되고, 이에 의해 로드(16)도 고정된다. 그후, 로크 너트(14)가 제1실시예에서와 같이 죄여진다. 그리고, 재차, 로크 너트(14)와 로드 고정 너트(13) 각각이 로드(16)에 소망의 체결력을 가할 때까지 그들 두 부품을 제2보어(8)의 기부쪽 방향으로 따로따로 돌려 체결한다.
상기한 양 실시예에서, 첫번째 경우에는 로드(16)를 고정하기 전에 나사부재와 리시버 부재가 서로에 대한 고정위치가 조정된 후에 단단하게 연결되는 반면에, 두번째 실시예에서는 로드 고정 너트(13)의 조임에 의해서만 최종 조정이 달성된다.
제3실시예로서, 제1실시예의 리시버 부재의 내부 나삿니를 따라 제2실시예에서와 같이 헤드(3)쪽으로 미끄러져 이동할 수 있도록 선택된 외경을 가지며 제2실시예의 압력 디스크(18)와 유사한 압력 디스크를, 헤드 고정 너트(12)에 추가하여 또는 그 헤드 고정 너트 대신에 배치하는 구성이 제공될 수도 있다. 그 외의 다른 부품들은 제1실시예의 것과 같다. 그 압력 디스크를 사용할 때, 그 후의 체결은 제2실시예에서와 같은 방식으로 달성된다.
양쪽 적용에 적절한 것으로 한가지 타입의 리시버부재(5)만이 요구되기 때문에 재고관리가 용이하다는 것이 제3실시예의 장점이다.
Claims (5)
- 뼈와 로드를 연결하기 위한 뼈 나사로서, 나삿니 부분과 구면 형상의 부분을 가진 헤드로 이루어진 나사부재와, 상기 나사부재의 상기 헤드 및 상기 로드를 수용하기 위한 원통형의 리시버 부재로서, 제1단부와, 상기 나사부재의 상기 나삿니 부분을 통과시키기 위해 상기 제1단부에 제공된 제1보어와, 상기 제1보어에 내측으로 인접한 위치에서 상기 나사부재의 상기 헤드를 수용하는 공동(空洞)의 구면부분과, 상기 나사부재와 그의 헤드를 끼워 넣기 위해 제1보어의 반대쪽으로 개방된 제2보어를 가지는 리시버 부재로 이루어진 뼈 나사에 있어서, 상기 리시버 부재가, 외부 나삿니와 내부 나삿니가 형성된 두개의 자유 다리부를 제공하도록 U자형의 리세스가 형성된 부분을 가지며, 상기 뼈 나사가, 상기 리시버 부재내의 끼워 넣어진 상기 나사부재의 상기 헤드에 작용하는 압력수단과, 상기 U자형의 리세스내에 수용된 상기 로드를 고정하기 위해 상기 리시버 부재의 개방단부에서 상기 리시버 부재의 상기 다리부의 상기 내부 나삿니에 나사결합되는 고정나사와, 상기 리시버 부재의 상기 다리부의 상기 외부 나삿니에 나사결합되는 로크 너트를 포함하는 것을 특징으로 하는 뼈 나사.
- 제1항에 있어서, 상기 헤드가 상기 나삿니 부분의 반대쪽 그의 측부에, 나사드라이버가 맞물리기 위한 결합구멍을 가지는 것을 특징으로 하는 뼈 나사.
- 제1항에 있어서, 상기 입력수단이 상기 헤드로 향하는 그의 측면에, 상기 헤드로 향한 구면형상 부분을 가지는 것을 특징으로 하는 뼈 나사.
- 제1항에 있어서, 상기 압력수단이 디스크로 형성된 것을 특징으로 하는 뼈 나사.
- 제1항에 있어서, 상기 압력수단이 나사로 형성된 것을 특징으로 하는 뼈 나사.
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DE4307576A DE4307576C1 (de) | 1993-03-10 | 1993-03-10 | Knochenschraube |
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KR (1) | KR0128371B1 (ko) |
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-
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- 1994-02-10 EP EP94102050A patent/EP0614649B1/de not_active Expired - Lifetime
- 1994-02-10 DE DE59400258T patent/DE59400258D1/de not_active Expired - Lifetime
- 1994-02-10 ES ES94102050T patent/ES2089867T3/es not_active Expired - Lifetime
- 1994-02-18 US US08/198,949 patent/US5443467A/en not_active Expired - Lifetime
- 1994-03-08 CA CA002118562A patent/CA2118562C/en not_active Expired - Lifetime
- 1994-03-08 JP JP6036201A patent/JP2510476B2/ja not_active Expired - Fee Related
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Cited By (4)
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KR100871889B1 (ko) * | 2001-07-27 | 2008-12-03 | 비이더만 모테크 게엠베하 | 골나사 |
KR100897042B1 (ko) * | 2001-07-27 | 2009-05-14 | 비이더만 모테크 게엠베하 | 골나사 고정구 |
KR100910205B1 (ko) * | 2001-12-28 | 2009-07-31 | 비이더만 모테크 게엠베하 | 생크에 연결된 보유부재 내에 로드형 부재를 고정하는 고정장치 |
KR20150144870A (ko) * | 2014-06-17 | 2015-12-29 | 김일환 | 손가락 관절 임플란트 |
Also Published As
Publication number | Publication date |
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DE59400258D1 (de) | 1996-06-13 |
KR940021013A (ko) | 1994-10-17 |
ES2089867T3 (es) | 1996-10-01 |
JP2510476B2 (ja) | 1996-06-26 |
EP0614649B1 (de) | 1996-05-08 |
US5443467A (en) | 1995-08-22 |
JPH06296621A (ja) | 1994-10-25 |
CA2118562C (en) | 1998-05-05 |
CA2118562A1 (en) | 1994-09-11 |
EP0614649A1 (de) | 1994-09-14 |
DE4307576C1 (de) | 1994-04-21 |
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