• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Die Erfindung betrifft ein Befestigungselement für die Osteosynthese, insbesondere für die Fixation von Kno­chenfragmenten über eine Abstützplatte. Das Befe­stigungselement besteht aus einer Dübelhülse und einer in die Dübelhülse eingreifenden Schraube, wobei die Dübelhülse aus einem zähelastischen, gewebevertäglichen Kunststoff ist und ihre Außenfläche ein Gewinde auf­weist. Die Dübelhülse ist an ihrem dem Schraubenkopf zugewandten Ende geringfügig und an ihrem anderen Ende in stärkerem Maße aufspreizbar, wodurch eine einfache Montage und eine feste Verspannung im Knochengewebe erzielt wird. In Verbindung mit einem metallischen Schraubendreher kann die Position der Dübelhülse bei deren Montage am Röntgenschirm oder in Verbindung mit einer Meßskala ständig überwacht werden.
    公开号:SU1753935A3
    申请号:SU864027817
    申请日:1986-07-09
    公开日:1992-08-07
    发明作者:Фишер Артур；Крамер Вольфганг
    申请人:Фишер-Верке, Артур Фишер Гмбх Унд Ко., Кг (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to medical technology, namely to a fastener for osteosynthesis, in particular for fixing bone fragments through a support plate.
    The purpose of the invention is to increase the stiffness of fixation of bone fragments while simplifying the installation in the surgical field.
    FIG. 1 shows a dowel sleeve, a slit with a screw; Fig. 2 illustrates a screwdriver for screwing in the dowel sleeve; on fig.Z - fastener, fixed in the bone.
    The fastener consists of a screw 1 of high-grade steel and a dowel sleeve 2 made of biocompatible plastic with a fabric, for example, ultraviolet-molecular polyethylene. Part of the inner hole 3 of the sleeve 2 has a diameter smaller than the outer diameter of the screw 1. The tops of the thread when screwing screw 1 cut into the inner wall of the dowel sleeve 2, and at the same time in the area of the rear part of the dowel sleeve 2 there is a slight expansion. The dowel sleeve 2 has for this purpose, in the area of the rear part of the sleeve 2, two opposite longitudinal slots 4, which allow expansion in the sense of expansion of the dowel sleeve 2. Part of the sleeve 2 of the inner bore 3 is provided with an internal hexagon 5, which serves to install an end-cap hexagon key, or profiled screwdriver. Internal thread diameter of screw 1. In the area of the front part of the dowel sleeve 2, this sleeve has two opposite longitudinal slots 6, which extend approximately half the length of the dowel sleeve 2, so that this area expands when screwing in screw 1. Due to the fact that the longitudinal slots 6 are longer than the longitudinal slots 4 and the inner diameter in the zone of the longitudinal slots 6 is smaller than in the zone of the longitudinal slots 4, screwing screw 1 into the dowel sleeve 2 causes a greater expansion in the front part than in back of the sleeve. Expansion and, respectively, expansion in the rear part of the sleeve 2 serves to protect the dowel sleeve 2 from undesirable rotation when screwing in screw 1, while expansion in the front part of the sleeve 2 creates its own VJ
    SP
    with about with
    SP

    with
    clamping dowel sleeve 2, so that dowel sleeve 2 with a strong tightening of the screw 1 and with the resultant large efforts stretching securely held in the bone.
    The outer surface of the dowel sleeve 2 along its entire length is provided with a thread 7, the tops and bottoms of which are rounded. The dowel sleeve 2 can have a thread-free partial zone that is metallized, which allows the positions of the dowel sleeve to be recorded on the X-ray screen.
    To install the fastener, a hole is drilled at first, approximately corresponding to the internal diameter of the thread of the dowel sleeve 2. In the bone tissue, a thread is made corresponding to the thread of the 7 dowel sleeve 2. In order to ensure the least possible destruction of the bone tissue, the thread-cutting tool is provided with a front, cutting and abutting to him and forming thread threads.
    With the aid of a screwdriver, the dowel sleeve 2 can be screwed into the threaded hole 8. The screwdriver has for this purpose a hexagonal profile 9 corresponding to an internal hexagon of a 5 dowel sleeve 2. At the front end 10, the screwdriver is tapered to a rod-shaped end part 11, the diameter of which is consistent with the internal diameter dowel sleeve 2 in its front part A screwdriver can be inserted into the dowel sleeve 2 at such a value as long as the transition part 12, limiting the hexagonal profile 9, does not fit the corresponding stop 13 in the dowel sleeve 2. The top 14 of the screwdriver is located in the same plane as the front end of the dowel sleeve 2. Since the screwdriver is made of metal, its position when screwing on the dowel sleeve 2 can be constantly traced on the X-ray unit screen, and the top 14 of the screwdriver simultaneously shows the position of the front end of the dowel sleeve 2 In addition, it is possible to provide a measuring scale on the shank 15 of the screwdriver with which the corresponding penetration depth of the dowel sleeve 2 can be read.
    A screwdriver can also be made.
    without a rod-shaped part 11, the measuring scale being located on the shank 15 in such a way that this linear measuring scale shows the distance to the front end of the dowel sleeve attached here. Fig. 3 shows the position of the plug-in sleeve 2 in the 1B fragment remote from the fracture, while the screw head 17 is in the close to the broken fragment 18. The plug-in sleeve 2 is in the through-hole and is reliably fixed due to the pressure of the bulge in its front part in the fragment 16. Due to this, a high pressure is reached in the zone of the fracture surface. 19. After removing the fracture, the screw 1 is reversed.
    权利要求:
    Claims (1)
    [1]
    The invention of the device for fixing bone fragments, containing an external dowel sleeve, completely with a screw and a longitudinal slot, characterized in that, in order to increase the rigidity of fixation of bone fragments while simplifying installation in the surgical field, the dowel sleeve is made in the form of two consecutive channels of different transverse exchange, one of which with a hexagonal cross section,
    the transverse size of which is larger than the transverse size of the other channel.
    Priority signs: 28.10.85-dowel bushing made metallized with an additional longitudinal slot; the cavity of the sleeve is made in the form of two consecutive channels of different transverse diameter, the dowel sleeve is made with an additional slot.
    12.07.85 - one of the channels is made with a hexagonal cross section, the transverse size of which is larger than the cross section of the other channel, the dowel sleeve is made metallized
    b g 13
    (Pus. 2
    18
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1753935A3|1992-08-07|Device for fixing bony fragments
    US4456005A|1984-06-26|External compression bone fixation device
    US4463753A|1984-08-07|Compression bone screw
    EP0657142B1|2001-04-11|Element for osteosynthesis
    KR0167627B1|1999-01-15|Screw for securing an intramedullary nail
    CA2088102C|1999-01-12|Fastening element
    DE60206700T2|2006-07-20|Fastening device for bone parts
    US6949100B1|2005-09-27|Bone screw for use in orthopaedic surgery
    US5690633A|1997-11-25|Orthopedic fracture fixation device
    EP0170787A1|1986-02-12|Device for the fixation of tubular bone fractures with an intramedullary nail and anchoring pin
    EP0194409A2|1986-09-17|Attachment element for osteosynthesis
    DE05782575T1|2012-09-13|SYSTEMS AND METHOD FOR FIXING OR CONNECTING BONES
    CH648197A5|1985-03-15|IMPLANT AND SCREW FASTENING ON ITS BONE.
    DE10015734A1|2001-09-13|Screw connection for osteosynthesis, e.g. to fix tibia head plate; has screw with conical head and ring, which can be moved in bearing ring, but is spread by screw head to fix angle of implant
    GB2173565A|1986-10-15|Expansion screw for surgical use
    DE19534136A1|1996-03-21|External or internal fixator for skeletal arthroplasty
    CH675531A5|1990-10-15|Instrument for osteosynthesis with perforated plate - has convex head bone screws fitting in tapering holes in osteosynthesis plate
    DE8520206U1|1985-12-19|Fixing element for osteosynthesis
    EP1354562A1|2003-10-22|Improved bone fixation
    EP1648318B1|2009-04-15|Device for fixing a longitudinal carrier to a bone fixing element
    EP1214914B1|2004-05-19|Locking screw for implants
    DE3538238A1|1986-09-11|Osteosynthesis fixing element
    EP0589235B1|1999-06-02|Intramedullary nail with locking pin
    DE3601865A1|1987-01-22|Fastening element for osteosynthesis
    DE202013105409U1|2013-12-04|Screw in particular bone screw and a tool for this
    同族专利:
    公开号 | 公开日
    CN86104508A|1987-01-07|
    US4760843A|1988-08-02|
    CA1259867A|1989-09-26|
    EP0209685A3|1988-11-09|
    EP0209685A2|1987-01-28|
    CN1008144B|1990-05-30|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE19858520206|DE8520206U1|1985-07-12|1985-07-12|Fixing element for osteosynthesis|
    DE19853538238|DE3538238A1|1985-03-11|1985-10-28|Osteosynthesis fixing element|
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