公开(公告)号：US5873720A

公开(公告)日：1999-02-23

申请号：US545614

申请日：1996-01-19

申请人： Lars Jorneus ,  Lennart Loof

发明人： Lars Jorneus ,  Lennart Loof

IPC分类号： A61C8/00

CPC分类号： A61C8/005 ,  A61C8/0068 ,  A61C8/0054 ,  A61C8/006

摘要： A spacing member for a securing element (fixture) permanently anchored in the jawbone. The spacing member comprises a substantially sleeve-shaped spacing element to be fitted on the securing element and a separate spacing screw. The spacing screw has an elongate, unthreaded middle portion and a threaded portion at its tip for engaging with an internally threaded bore in an upper part of the securing element. The sleeve-shaped spacing element includes a passage extending longitudinally therethrough for receiving the spacing screw. The passage has an internally threaded portion for engaging with the spacing screw, so that the spacing screw, after it has been threaded through the threaded portion, is joined together with the spacing element, and a recess in an upper part of the passage. The recess has a non-circular geometry for facilitating application of a counter-holding instrument in order to prevent the tightening force from being transmitted down into the securing element when the sleeve-shaped spacing element is fitted on the securing element.

摘要翻译： PCT No.PCT / SE95 / 00217 Sec。 371日期1996年1月19日 102（e）日期1996年1月19日PCT 1995年3月2日PCT公布。 WO95 / 23561 PCT出版物 日期1995年9月8日一个永久锚定在颚骨中的固定元件（夹具）的间隔构件。 间隔构件包括将被装配在固定元件上的基本上为套筒形的间隔元件和单独的间隔螺钉。 间隔螺钉具有细长的无螺纹中间部分和在其顶端处的螺纹部分，用于与固定元件的上部中的内螺纹孔接合。 套筒形的间隔元件包括一个纵向延伸通过的通道，用于容纳间隔螺钉。 通道具有用于与间隔螺钉接合的内螺纹部分，使得间隔螺钉在螺纹穿过螺纹部分之后与间隔元件连接在一起，并且在通道的上部中具有凹部。 该凹部具有非圆形几何形状，以便于在套筒形间隔元件安装在固定元件上时便于施加反夹持器械，以防止紧固力向下传入固定元件。

公开(公告)号：US4824372A

公开(公告)日：1989-04-25

申请号：US110994

申请日：1987-10-21

申请人： Lars Jorneus ,  Lennart Loof ,  Bo Rangert

发明人： Lars Jorneus ,  Lennart Loof ,  Bo Rangert

IPC分类号： A61C8/00 ,  A61C13/30 ,  A61C13/00

CPC分类号： A61C8/005 ,  A61C8/0089 ,  A61C8/0054 ,  A61C8/006 ,  A61C8/0068

摘要： The disclosure relates to an apparatus for the fixation of a single-tooth restoration to an implant in the form of an anchorage element (fixture) permanently anchored in the maxillary, comprising a substantially tubular spacer (4) which is anchored to the anchorage element by means of a spacer screw (5) provided with an externally threaded portion (23) which engages in an internally threaded recess (7) in the upper region of the fixture. The spacer screw (5) is provided with an unthreaded waist (25) whose length exceeds the thread diameter of the spacer screw, and has a screw head (20) of comparatively slight diameter and with a planar or gently conical shoulder which cooperates with a corresponding annular shoulder (19) in the tubular spacer (4). The apparatus is mounted in place by means of a double screwdriver whose one part fits the internal counter-abutment in the spacer sleeve (4) and whose other part is caused to engage with the driver slot (24) of the screw head. In the mounting operation, equal, but counter-directed torques are applied to both parts of the screwdriver so that the implant will remain unloaded during the mounting operation proper.

公开(公告)号：US5098293A

公开(公告)日：1992-03-24

申请号：US689477

申请日：1991-04-23

申请人： Lennart Loof ,  Pierre-Luc Maillefer

发明人： Lennart Loof ,  Pierre-Luc Maillefer

IPC分类号： A61B17/16 ,  A61C1/14 ,  A61C3/02 ,  A61C8/00

CPC分类号： A61C3/02 ,  A61C1/142 ,  A61C8/0089 ,  A61C1/145 ,  Y10T408/907

摘要： In connection with implant work on the dentine, a machining instrument is used which is provided with an attachment part for attachment to a rotary unit or for attachment to extension unit, which in turn can be applied to the rotary unit. The extension unit has a thickened central section which is provided with a recess or opening in which an inclined surface is arranged. In the applied position of a machining instrument, one surface of its attachment part is set against the inclined surface of the extension unit. The extension unit and the machining instrument are rotationally-fixed with respect to each other. Moreover, a locking effect is achieved between the extension unit and the machining instrument as a result of a secure wedging effect obtained by means of the inclined surface.

公开(公告)号：USD338959S

公开(公告)日：1993-08-31

申请号：US596160

申请日：1990-10-11

申请人： Lennart Loof ,  Lennart Carlsson

设计人： Lennart Loof ,  Lennart Carlsson

公开(公告)号：US5064425A

公开(公告)日：1991-11-12

申请号：US084229

申请日：1987-08-11

申请人： Per-Ingvar Branemark ,  Einar Jorgensen ,  Lars Joneus ,  Kjell O. Hagberg ,  Lennart Loof ,  Carl A. Morenius

发明人： Per-Ingvar Branemark ,  Einar Jorgensen ,  Lars Joneus ,  Kjell O. Hagberg ,  Lennart Loof ,  Carl A. Morenius

IPC分类号： A61C8/00 ,  F16B25/00

CPC分类号： A61C8/0022 ,  A61C8/0024

摘要： An elongate cylindrical body member is adapted for permanent anchoring of its lower end into bone tissue and constructed to support an attached device such as a tooth at its upper end. The body member has an external screw thread formed in its outer surface, and at least one cavity defined therein adjacent its bottom end. Each cavity forms at its intersection with the screw thread at least one cutting edge for self-tapping as the body member is screwed into the bone tissue. Such cavity defines a total volume within the outer surface of said body member sufficient to retain all the bone tissue material which is removed as a result of the self-tapping operation. The cavity stops short of the lowermost end of the body member so as to maintain the bottom end of the body member imperforate, whereby the screwing of the body member into a pre-formed receiving aperture formed in the bone tissue causes the resulting particles of bone tissue to collect in the cavity, thereby promoting the securing of the body member into the aperture, while the bottom of the receiving aperture remains free of the bone particles because of its imperforate bottom lower end member.

摘要翻译： 细长的圆柱形主体构件适于将其下端永久地锚固到骨组织中并且构造成在其上端处支撑附接的装置，例如齿。 本体构件具有形成在其外表面中的外螺纹，并且其中限定有邻近其底端的至少一个空腔。 每个空腔在其与螺纹的交叉处形成至少一个切削刃，用于当主体部件拧入骨组织中时进行自攻。 这种空腔限定​​了所述主体构件的外表面内的总体积，足以保持由于自动攻丝操作而被去除的所有骨组织材料。 空腔停止在主体构件的最下端，以便保持主体构件的底端无孔，从而将主体构件拧入形成在骨组织中的预先形成的接收孔中，导致所得的骨颗粒 组织收集在空腔中，从而促进本体构件固定到孔中，而接收孔的底部由于其无孔底部下端构件而保持不含骨颗粒。