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    • 1. 发明专利
    • Self-tapping screw for bonelet operation
    • 自攻螺丝用于钢琴操作
    • JP2003024343A
    • 2003-01-28
    • JP2002194600
    • 2002-07-03
    • Louis Samuel BaroukDepuy Franceデュプュイ フランスサミュエル バルク ルイ
    • WEIL LOWELL SCOTTBAROUK LOUIS SAMUELSOUILLAT THIERRY
    • A61B17/58A61B17/86
    • A61B17/863A61B17/8635A61B17/864
    • PROBLEM TO BE SOLVED: To provide a self-tapping screw for bonelet operation. SOLUTION: The self-tapping screw is provided with a screwed proximal head (2), a screwed distal shaft part (3) having a larger pitch and an inner cannula (4). The screwed distal shaft part (3) is screwed through its entire length. In addition to a part to be machined having a self-tapping face formed on a plurality of beginning screw threads, the end of the shaft part has at least two parts to be machined being at least two self-boring edge parts one of which has at least two notches (11) with the cannula and the other of which is at the distal end of the screw. In addition to the parts to be machined forming the self-tapping face on the plurality of beginning screw threads, the screw thread of the head has chamfered faces (16 to 19) which have boring edge parts (12b to 15b) preceded by a narrow groove formed.
    • 要解决的问题:提供用于骨髓移植的自攻螺钉。 解决方案:自攻螺钉设置有螺纹近端头部(2),具有较大螺距的螺纹远端轴部分(3)和内部套管(4)。 螺钉的远端轴部分(3)在其整个长度上旋拧。 除了具有形成在多个起始螺纹上的自攻螺纹面的待加工部件之外,轴部件的端部具有至少两个待加工的部件,其至少两个自钻边缘部件,其中一个具有 至少两个切口(11),其中套管和另一个位于螺钉的远端。 除了在多个起始螺纹上形成自攻螺纹的待加工部件之外,头部的螺纹具有倒角面(16至19),其具有前面具有狭窄的钻孔边缘部分(12b至15b) 槽形成。
    • 7. 发明专利
    • FR2787989A1
    • 2000-07-07
    • FR9816678
    • 1998-12-30
    • DEPUY FRANCE
    • BAROUK LOUIS SAMUELCOULANGE VINCENTGAUME JEAN MICHEL
    • A61B17/58A61B17/86A61B17/68
    • The invention concerns a self-compressive and atraumatic osteosynthesis screw (1), comprising a threaded proximal head (2), a body (4) forming a threaded distal portion (5) and, between the head and the distal part, a smooth section (6) of short length relatively to the distal portion length, the threading (7) thereof having a greater pitch than that of the proximal head threading (3), and a longitudinal channel (8) provided from one end to the other of said screw to receive a guide pin; said screw comprises means enabling it to fix small bones or small bone fragments of the skeleton after an osteotomy or a fracture, and in particular one of the five metatarsals (13, 14) of a human foot, said means comprising a threading diameter (d1) of the distal portion (5) slightly greater than the diameter (d2) of the thread root (3) of the proximal head (2) and the diameter of the channel (8) ranges between about 0.8 and 1.0 mm. Said screw miniaturised compared to the BAROUK screws of prior art advantageously replaces them as well as the cleavable screws with self-rupturing end piece for all the small bones, and bone fragments, in particular the five metatarsal bones.