• 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:
    . The invention relates to a device for the operation of mainly fractures in the distal femur (the supracondular femoral cord), proximal tibia and proximal humerus. For this, either plates or marrow nails are used today which, with transverse screws, increase the fracture. However, both systems have their drawbacks. The invention extends the area of application of the marrow nail by being able to use a larger number of transverse screws at a greater distance and with a larger spread in relation to the nail-central axis, ie combine the benefits of the marrow nail with the plate. Fold-out wings (3A, 3B) which can be folded out and fastened in the nail (1) are used as attachment screws, which the insertion of the rear nail is turned into the desired position and locked in the nail and the leg. Inserted into the wings for holes for angularly stable transverse screws in different directions.
    公开号:SE1000107A1
    申请号:SE1000107
    申请日:2010-02-05
    公开日:2011-08-06
    发明作者:Stefan Wetterstad
    申请人:Wetterstad Consulting Ab；
    IPC主号:
    专利说明:

    has the corresponding two boom grooves (7A, 7B) and also in the nail (7C), with different angles. Figure 3 shows the rotation method, how the wings are rotated to the desired position by inserting the bolt into the drilled hole in the leg and pushing into the boom grooves until it is stopped against the wing behind.
    Then turn the bolt (6) plus the wing (3A) until the bolt can be pushed into the boom grooves in the wing (3B).
    The bolt and both wings are then turned to the correct position in the nail. The bolt is then knocked in a few more millimeters for wedging in the leg at the same time as a holding (fixering) of the wings takes place in the nail and bone. The bolt is wedged at both ends. The bolt (center screw) is a rotating element but can also serve as a transverse screw.
    Figure 4 shows examples of three different elements, transverse screw (5), center screw (6) and clamping screw (8). The screws are an important factor for this expansion method.
    The nail is locked at the wings by the center bolt and in the leg by the transverse screws of the wings. The wings have been shown solely to give a sense of proportion.
    If necessary, additional locking can be done with one or fl your locking screws (8), Figure 6.
    The clamping screw has a thread that fits in the hole on one side of the nail slot. When tightening, the slot is sufficiently fl visible to use the friction, nail-wing-wing-nail, to xer the wings.
    The slit of the nail can be elasticized in sätt your ways (l 1) to increase the ability to dress. The wing and nail surfaces can be lightened (10) to further strengthen the friction, figure 7..
    The wings can be rotated by hand or with tools. The rotation, Figure 3, is relatively easy in the meta / split leg if the wings, Figure 7, have an edge (9) and can cut into the leg. The rotation can also take place with some other type of carrier.
    The center bolt and the clamping screw can also be used if a rotation of the wings is desired for the disassembly of the nail. The back screw of the locking screw loosens the wings. Fast growth may occur.
    To improve the nail against fatigue failure in the slot section, high-strength steel, which is plated with titanium, can be used in nails and other parts. Omitted titanium coating can also counteract adhesion.
    Figure 8 shows another method; rotation / locking from the end of the nail, The end screw (12) pushes out the wings by means of some link device (13). The dotted line shows a double link in the position before the wings turn. The end plug (12) of the nail can also provide rotation / locking if the wings are cut down for this, for example, Figure 9. Each wing (14) can also have a wire or, as here, a common (15) for rotation by means of a hook at dismantling. A hood (16) can hide the road after the insertion of the nail.
    A plug and other parts may be of moldable material that penetrates and locks while preventing bone material from growing into the slot.
    权利要求:
    Claims (1)
    [1]
    Claims 1. 1. 10. 11. 12. l3. Device, in the operation of fractures of the distal femur, proximal tibia and proximal humerus, including prosthetic fractures in the form of a medullary nail with parts for anchoring transverse screws in nails and bone material, characterized in that the organ provides different selectable axial, radial or transverse brackets and positions for the screws at a large distance from the shaft of the nail and the possibility of detachable locking of the member. Device according to claim 1, characterized in that the member consists of one or more elements expanding from the nail. Device according to claims 1 and 2, characterized in that the member consists of one or more wings. Device according to claims 2 and 3, characterized in that the member is locked by special locking elements. Device according to claims 2 and 3, characterized in that the element is of different materials, dimension, shape and location. Device according to claims 2 and 3, characterized in that the elements are placed in openings wherever these are made in the nail. Device according to claims 2 and 3, characterized in that the elements are part of or placed on the outside of the nail. Device according to claims 3, 6 and 7, characterized in that the element is rotated out in the metaphyseal bone with the possibility of rotation. Device according to claims 2 and 3, characterized in that the elements are projected and pointed for easier rotation. Device according to claims 2 and 3, characterized in that the rotation takes place by means of a whole or divided element provided with a carrier for rotation and fixation. Device according to claims 2, 3 and 10, characterized in that the rotation takes place by means of a complete or divided element with eg conical threads in the screw. Device according to claim 10, characterized in that the rotation / locking takes place with internal or external devices. Device according to claims 2, 3 and 6, characterized in that the wings are locked in a clampable slot with special locking screws and friction surfaces on the wings and nails and with means which make the slot more flexible. Device according to claims 2 and 3, characterized in that rotation / locking in the nail takes place with an adjustable plug with or without elements which wedge / loosen the wings.
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    同族专利:
    公开号 | 公开日
    SE535423C2|2012-07-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2013-10-01| NUG| Patent has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    SE1000107A|SE535423C2|2010-02-05|2010-02-05|Removable marrow nail|SE1000107A| SE535423C2|2010-02-05|2010-02-05|Removable marrow nail|
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