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公开(公告)号：US5797917A
公开(公告)日：1998-08-25
申请号：US799792
申请日：1997-02-12
申请人： Lawrence M. Boyd , Thomas McGahan
发明人： Lawrence M. Boyd , Thomas McGahan
IPC分类号： A61B17/58 , A61B17/16 , A61B17/70 , A61F2/00 , A61F2/28 , A61F2/30 , A61F2/44 , A61F2/46 , A61B17/88
CPC分类号： A61B17/1671 , A61B17/1637 , A61B17/7032 , A61B17/7041 , A61F2/446 , A61F2/4611 , A61B17/7011 , A61F2/442 , A61F2/4455 , A61F2002/2835 , A61F2002/30224 , A61F2002/30235 , A61F2002/30785 , A61F2002/30787 , A61F2002/30797 , A61F2002/3085 , A61F2002/4475 , A61F2002/448 , A61F2002/449 , A61F2002/4619 , A61F2002/4627 , A61F2002/4681 , A61F2230/0069
摘要： A system and method for anterior fixation of the spine utilizes a cylindrical implant engaged in the intradiscal space at the cephalad and caudal ends of the construct. The implants are cylindrical fusion devices (10) filled with bone material to promote bone ingrowth and fusion of the disc space. An attachment member (40) is connected to each of the fusion devices (10) and a spinal rod (50) is connected to each of the attachment members using an eyebolt assembly (53, 54, 55). In a further inventive method, a revision of the construct is achieved by removing the fusion devices. Each fusion device is engaged by an elongated guide member (62) over which a cylindrical trephine (70) is advanced. The trephine (70) is used to extract a core (84) of bone material around the fusion implant, while the guide member (62) is used to remove the bone core (84) containing the fusion implant (10). In another aspect of the invention, a removal insert (90, 90') is provided that engages an implanted fusion device (10). The removal insert (90, 90') can be used to guide the trephine (70) around the fusion device, and is connected to a removal tool (100) once the bone core is created. The removal tool (100) includes a shaft (101) attached to the removal insert (90, 90'), and a slap hammer (104) slidably mounted on the shaft.
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公开(公告)号：US20050192669A1
公开(公告)日：2005-09-01
申请号：US10624981
申请日：2003-07-22
申请人： Thomas Zdeblick , William McKay , Larry Boyd , Eddie Ray , Thomas McGahan
发明人： Thomas Zdeblick , William McKay , Larry Boyd , Eddie Ray , Thomas McGahan
IPC分类号： A61B17/56 , A61B17/16 , A61B17/58 , A61B17/70 , A61B17/88 , A61F20060101 , A61F2/00 , A61F2/28 , A61F2/30 , A61F2/44 , A61F2/46 , A61L27/00 , A61L27/22 , A61L31/04
CPC分类号： A61F2/4455 , A61B17/1671 , A61B17/8877 , A61B17/8891 , A61F2/30744 , A61F2/30767 , A61F2/442 , A61F2/446 , A61F2/4611 , A61F2/4637 , A61F2002/2835 , A61F2002/30136 , A61F2002/30143 , A61F2002/30153 , A61F2002/30158 , A61F2002/3021 , A61F2002/30217 , A61F2002/30504 , A61F2002/30774 , A61F2002/30777 , A61F2002/30785 , A61F2002/3082 , A61F2002/3085 , A61F2002/30858 , A61F2002/30874 , A61F2002/4475 , A61F2002/448 , A61F2002/4627 , A61F2002/464 , A61F2002/4641 , A61F2220/0025 , A61F2230/0004 , A61F2230/0017 , A61F2230/0019 , A61F2230/0026 , A61F2230/0067 , A61F2310/00017 , A61F2310/00023 , A61F2310/00095 , A61F2310/00131 , A61F2310/00161 , A61F2310/00179 , A61F2310/00796 , A61L27/227 , A61L31/047 , A61L2430/38
摘要： An interbody fusion device in one embodiment includes a tapered body defining a hollow interior or chamber for receiving bone graft or bone substitute material. The body defines exterior threads which are interrupted over portions of the outer surface of the device. The fusion device includes truncated side walls so that on end view the body takes on a cylindrical form. In another embodiment, the tapered body is solid and formed of a porous biocompatible material having sufficient structural integrity to maintain the intradiscal space and normal curvature. The material is preferably a porous tantalum composite having fully interconnected pores to facilitate complete bone tissue ingrowth into the implant. In further embodiments, the fusion devices are provided with osteogenic material to facilitate bone ingrowth. A cap is also provided to block the opening of hollow fusion devices. The cap includes an occlusion body and an elongated anchor. In some embodiments the anchor includes a lip which is engageable to openings in the body wall. Tools are also provided for manipulating caps for interbody fusion devices. In one embodiment the tool includes a pair of prongs each having facing engagement surfaces for engaging the fusion device, and a shaft slidably disposed between the prongs. The shaft has a first end defining a cap-engaging tip for engaging a tool hole in the cap. In one embodiment the cap engaging tip defines threads. In another embodiment the prongs include a pair of releasing members on each of the facing engagement surfaces. The releasing members have a height and a width for being insertable into apertures in a body wall in the fusion device to disengage the elongate anchors from the apertures.
摘要翻译： 在一个实施例中的体内融合装置包括限定用于接收骨移植物或骨替代材料的中空内部或室的锥体。 主体限定了在装置的外表面的部分上被中断的外螺纹。 融合装置包括截顶侧壁，使得在端部视图上，身体呈圆柱形。 在另一个实施例中，锥形体是固体的并由具有足够结构完整性的多孔生物相容性材料形成，以保持椎间盘内空间和正常曲率。 该材料优选是具有完全相互连通的孔的多孔钽复合材料，以促进完整的骨组织向植入物中向内生长。 在另外的实施方案中，融合装置设有成骨材料以促进骨向内生长。 还提供盖以阻挡中空融合装置的开口。 帽包括闭塞体和细长锚。 在一些实施例中，锚固件包括可与体壁中的开口接合的唇缘。 还提供了用于操纵用于体内融合装置的帽的工具。 在一个实施例中，工具包括一对插脚，每个插脚具有用于接合熔接装置的面对的接合表面，以及可滑动地设置在插脚之间的轴。 轴具有限定用于接合盖中的工具孔的帽接合末端的第一端。 在一个实施例中，帽接合尖端限定螺纹。 在另一个实施例中，尖头包括在每个相对的接合表面上的一对释放构件。 释放构件具有高度和宽度，用于可插入到融合装置中的体壁中的孔中，以使细长的锚定件与孔脱离。
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公开(公告)号：US06471724B2
公开(公告)日：2002-10-29
申请号：US09781589
申请日：2001-02-05
申请人： Thomas Zdeblick , Thomas McGahan
发明人： Thomas Zdeblick , Thomas McGahan
IPC分类号： A61F244
CPC分类号： A61B1/3132 , A61B1/3135 , A61B17/025 , A61B17/1671 , A61B17/1757 , A61B17/282 , A61B17/7059 , A61B17/86 , A61B2017/00238 , A61B2017/00261 , A61B2017/0256 , A61B2017/3488 , A61B2090/3904 , A61B2090/3937 , A61F2/442 , A61F2/446 , A61F2/4601 , A61F2/4611 , A61F2002/2835 , A61F2002/2839 , A61F2002/30123 , A61F2002/30153 , A61F2002/30179 , A61F2002/3021 , A61F2002/30217 , A61F2002/30329 , A61F2002/30433 , A61F2002/30507 , A61F2002/30604 , A61F2002/30774 , A61F2002/30777 , A61F2002/30785 , A61F2002/30787 , A61F2002/30789 , A61F2002/3082 , A61F2002/30858 , A61F2002/30863 , A61F2002/30871 , A61F2002/30874 , A61F2002/4475 , A61F2002/448 , A61F2002/4627 , A61F2002/4635 , A61F2220/0025 , A61F2220/0041 , A61F2230/0006 , A61F2230/0019 , A61F2230/0058 , A61F2230/0067
摘要： A laparoscopic surgical technique is provided for preparing a site for implantation of a novel fusion device or implant. In accordance with one embodiment of the technique, a laparoscope is provided having an outer sleeve with distraction fingers at one end to distract the disc space. The laparoscope provides a sealed working channel to the disc space, through which the disc space is distracted, the vertebral endplates and surrounding disc is reamed, and the fusion device inserted. A distraction plug is provided for centering the outer sleeve and for providing midline distraction of the disc space. In one embodiment, a fusion device includes diverging bone screws passing through an end wall and upper and lower walls of the device to engage the adjacent vertebrae. In another embodiment, a connector plate is engaged to bilaterally position fusion devices to prevent rotation and resist expulsion of the devices from the disc space.
摘要翻译： 提供了一种腹腔镜手术技术，用于制备用于植入新型融合装置或植入物的部位。 根据该技术的一个实施例，提供一种腹腔镜，其具有在一端具有分心指的外套筒以分散椎间盘空间。 腹腔镜为椎间盘空间提供了一个密封的工作通道，椎间盘空间被分散，椎骨终板和周围的椎间盘被延伸，并插入融合装置。 提供分心塞用于使外套定心，并用于提供椎间盘空间的中线分心。 在一个实施例中，融合装置包括穿过装置的端壁和上壁和下壁的分叉骨螺钉以接合相邻的椎骨。 在另一个实施例中，连接器板被接合以便双向地定位熔接装置以防止旋转并且阻止装置从盘片空间中排出。
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14.发明授权
公开(公告)号：US6096044A
公开(公告)日：2000-08-01
申请号：US111203
申请日：1998-07-07
申请人： Lawrence M. Boyd , Eddie Ray, III , Thomas McGahan
发明人： Lawrence M. Boyd , Eddie Ray, III , Thomas McGahan
IPC分类号： A61B17/56 , A61B17/00 , A61B17/17 , A61B17/28 , A61B17/34 , A61B18/14 , A61B19/00 , A61F2/28 , A61F2/30 , A61F2/44 , A61F2/46 , A61B17/58
CPC分类号： A61B18/1482 , A61B18/1402 , A61B18/1445 , A61B90/39 , A61F2/446 , A61B17/1757 , A61B17/3421 , A61B18/14 , A61B2017/00261 , A61B2017/00349 , A61B2017/2927 , A61B2017/3488 , A61B2090/3904 , A61B2090/3937 , A61F2/442 , A61F2002/2835 , A61F2002/30963 , A61F2002/4475 , A61F2002/448
摘要： A template assembly is provided for marking locations on the disc annulus for the implantation of an interbody fusion device or the introduction of a working instrument. The template assembly includes a tubular body sized for percutaneous introduction into a patient and advancement to an affected intervertebral disc. An elongated shaft slidably extends through the tubular body and is threadedly engaged to the handle-mounted thumb wheel so that rotation of the thumb wheel relative to the tubular body retracts the shaft through the body. A guide foot with a rotatable cam near the distal end of the tubular body is operable by the shaft and may be pivoted from a first position aligned with the tubular body to a second deployed position oriented transversely to the tubular body. The guide assembly has an electrocautery projection for marking locations on the disc annulus.
摘要翻译： 提供了一种模板组件，用于标记椎间盘环上的位置，用于植入体内融合装置或引入工作器械。 模板组件包括尺寸适于经皮引入患者体内并进入受影响的椎间盘的管状体。 细长轴可滑动地延伸穿过管状主体并且螺纹地接合到手柄安装的拇指轮，使得拇指轮相对于管状主体的旋转使轴穿过主体缩回。 具有靠近管状体的远端的可旋转凸轮的引导脚可由轴操作，并且可以从与管状体对准的第一位置枢转到横向于管状体定向的第二展开位置。 引导组件具有用于标记盘环上的位置的电灼突起。
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公开(公告)号：US20110238184A1
公开(公告)日：2011-09-29
申请号：US13150616
申请日：2011-06-01
申请人： Thomas Zdeblick , Thomas McGahan
发明人： Thomas Zdeblick , Thomas McGahan
IPC分类号： A61F2/44
CPC分类号： A61B1/3132 , A61B1/3135 , A61B17/025 , A61B17/1671 , A61B17/1757 , A61B17/282 , A61B17/7059 , A61B17/86 , A61B2017/00238 , A61B2017/00261 , A61B2017/0256 , A61B2017/3488 , A61B2090/3904 , A61B2090/3937 , A61F2/442 , A61F2/446 , A61F2/4601 , A61F2/4611 , A61F2002/2835 , A61F2002/2839 , A61F2002/30123 , A61F2002/30153 , A61F2002/30179 , A61F2002/3021 , A61F2002/30217 , A61F2002/30329 , A61F2002/30433 , A61F2002/30507 , A61F2002/30604 , A61F2002/30774 , A61F2002/30777 , A61F2002/30785 , A61F2002/30787 , A61F2002/30789 , A61F2002/3082 , A61F2002/30858 , A61F2002/30863 , A61F2002/30871 , A61F2002/30874 , A61F2002/4475 , A61F2002/448 , A61F2002/4627 , A61F2002/4635 , A61F2220/0025 , A61F2220/0041 , A61F2230/0006 , A61F2230/0019 , A61F2230/0058 , A61F2230/0067
摘要： A laparoscopic surgical technique is provided for preparing a site for implantation of a novel fusion device or implant. In accordance with one embodiment of the technique, a laparoscope is provided having an outer sleeve with distraction fingers at one end to distract the disc space. The laparoscope provides a sealed working channel to the disc space, through which the disc space is distracted, the vertebral endplates and surrounding disc is reamed, and the fusion device inserted. A distraction plug is provided for centering the outer sleeve and for providing midline distraction of the disc space. In one embodiment, a fusion device includes diverging bone screws passing through an end wall and upper and lower walls of the device to engage the adjacent vertebrae. In another embodiment, a connector plate is engaged to bilaterally position fusion devices to prevent rotation and resist expulsion of the devices from the disc space.
摘要翻译： 提供了一种腹腔镜手术技术，用于制备用于植入新型融合装置或植入物的部位。 根据该技术的一个实施例，提供一种腹腔镜，其具有在一端具有分心指的外套筒以分散椎间盘空间。 腹腔镜为椎间盘空间提供了一个密封的工作通道，椎间盘空间被分散，椎骨终板和周围的椎间盘被延伸，并插入融合装置。 提供分心塞用于使外套定心，并用于提供椎间盘空间的中线分心。 在一个实施例中，融合装置包括穿过装置的端壁和上壁和下壁的分叉骨螺钉以接合相邻的椎骨。 在另一个实施例中，连接器板被接合以便双向地定位熔接装置以防止旋转并且阻止装置从盘片空间中排出。
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公开(公告)号：US07621958B2
公开(公告)日：2009-11-24
申请号：US10763719
申请日：2004-01-23
申请人： Thomas Zdeblick , Thomas McGahan
发明人： Thomas Zdeblick , Thomas McGahan
IPC分类号： A61F2/44
CPC分类号： A61B1/3132 , A61B1/3135 , A61B17/025 , A61B17/1671 , A61B17/1757 , A61B17/282 , A61B17/7059 , A61B17/86 , A61B2017/00238 , A61B2017/00261 , A61B2017/0256 , A61B2017/3488 , A61B2090/3904 , A61B2090/3937 , A61F2/442 , A61F2/446 , A61F2/4601 , A61F2/4611 , A61F2002/2835 , A61F2002/2839 , A61F2002/30123 , A61F2002/30153 , A61F2002/30179 , A61F2002/3021 , A61F2002/30217 , A61F2002/30329 , A61F2002/30433 , A61F2002/30507 , A61F2002/30604 , A61F2002/30774 , A61F2002/30777 , A61F2002/30785 , A61F2002/30787 , A61F2002/30789 , A61F2002/3082 , A61F2002/30858 , A61F2002/30863 , A61F2002/30871 , A61F2002/30874 , A61F2002/4475 , A61F2002/448 , A61F2002/4627 , A61F2002/4635 , A61F2220/0025 , A61F2220/0041 , A61F2230/0006 , A61F2230/0019 , A61F2230/0058 , A61F2230/0067
摘要： A laparoscopic surgical technique is provided for preparing a site for implantation of a novel fusion device or implant. In accordance with one embodiment of the technique, a laparoscope is provided having an outer sleeve with distraction fingers at one end to distract the disc space. The laparoscope provides a sealed working channel to the disc space, through which the disc space is distracted, the vertebral endplates and surrounding disc is reamed, and the fusion device inserted. A distraction plug is provided for centering the outer sleeve and for providing midline distraction of the disc space. In one embodiment, a fusion device includes diverging bone screws passing through an end wall and upper and lower walls of the device to engage the adjacent vertebrae. In another embodiment, a connector plate is engaged to bilaterally position fusion devices to prevent rotation and resist expulsion of the devices from the disc space.
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公开(公告)号：US06695851B2
公开(公告)日：2004-02-24
申请号：US10213864
申请日：2002-08-07
申请人： Thomas Zdeblick , Thomas McGahan
发明人： Thomas Zdeblick , Thomas McGahan
IPC分类号： A61B1758
CPC分类号： A61B1/3132 , A61B1/3135 , A61B17/025 , A61B17/1671 , A61B17/1757 , A61B17/282 , A61B17/7059 , A61B17/86 , A61B2017/00238 , A61B2017/00261 , A61B2017/0256 , A61B2017/3488 , A61B2090/3904 , A61B2090/3937 , A61F2/442 , A61F2/446 , A61F2/4601 , A61F2/4611 , A61F2002/2835 , A61F2002/2839 , A61F2002/30123 , A61F2002/30153 , A61F2002/30179 , A61F2002/3021 , A61F2002/30217 , A61F2002/30329 , A61F2002/30433 , A61F2002/30507 , A61F2002/30604 , A61F2002/30774 , A61F2002/30777 , A61F2002/30785 , A61F2002/30787 , A61F2002/30789 , A61F2002/3082 , A61F2002/30858 , A61F2002/30863 , A61F2002/30871 , A61F2002/30874 , A61F2002/4475 , A61F2002/448 , A61F2002/4627 , A61F2002/4635 , A61F2220/0025 , A61F2220/0041 , A61F2230/0006 , A61F2230/0019 , A61F2230/0058 , A61F2230/0067
摘要： A laparoscopic surgical technique is provided for preparing a site for implantation of a novel fusion device or implant. In accordance with one embodiment of the technique, a laparoscope is provided having an outer sleeve with distraction fingers at one end to distract the disc space. The laparoscope provides a sealed working channel to the disc space, through which the disc space is distracted, the vertebral endplates and surrounding disc is reamed, and the fusion device inserted. A distraction plug is provided for centering the outer sleeve and for providing midline distraction of the disc space. In one embodiment, a fusion device includes diverging bone screws passing through an end wall and upper and lower walls of the device to engage the adjacent vertebrae. In another embodiment, a connector plate is engaged to bilaterally position fusion devices to prevent rotation and resist expulsion of the devices from the disc space.
摘要翻译： 提供了一种腹腔镜手术技术，用于制备用于植入新型融合装置或植入物的部位。 根据该技术的一个实施例，提供一种腹腔镜，其具有在一端具有分心指的外套筒以分散椎间盘空间。 腹腔镜为椎间盘空间提供了一个密封的工作通道，椎间盘空间被分散，椎骨终板和周围的椎间盘被延伸，并插入融合装置。 提供分心塞用于使外套定心，并用于提供椎间盘空间的中线分心。 在一个实施例中，融合装置包括穿过装置的端壁和上壁和下壁的分叉骨螺钉以接合相邻的椎骨。 在另一个实施例中，连接器板被接合以便双向地定位熔接装置以防止旋转并且阻止装置从盘片空间中排出。
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公开(公告)号：US06613091B1
公开(公告)日：2003-09-02
申请号：US09502731
申请日：2000-02-11
IPC分类号： A61F244
CPC分类号： A61F2/4455 , A61B17/1671 , A61B17/8877 , A61B17/8891 , A61F2/30744 , A61F2/30767 , A61F2/442 , A61F2/446 , A61F2/4611 , A61F2/4637 , A61F2002/2835 , A61F2002/30136 , A61F2002/30143 , A61F2002/30153 , A61F2002/30158 , A61F2002/3021 , A61F2002/30217 , A61F2002/30504 , A61F2002/30774 , A61F2002/30777 , A61F2002/30785 , A61F2002/3082 , A61F2002/3085 , A61F2002/30858 , A61F2002/30874 , A61F2002/4475 , A61F2002/448 , A61F2002/4627 , A61F2002/464 , A61F2002/4641 , A61F2220/0025 , A61F2230/0004 , A61F2230/0017 , A61F2230/0019 , A61F2230/0026 , A61F2230/0067 , A61F2310/00017 , A61F2310/00023 , A61F2310/00095 , A61F2310/00131 , A61F2310/00161 , A61F2310/00179 , A61F2310/00796 , A61L27/227 , A61L31/047 , A61L2430/38
摘要： An interbody fusion device in one embodiment includes a tapered body defining a hollow interior or chamber for receiving bone graft or bone substitute material. The body defines exterior threads which are interrupted over portions of the outer surface of the device. The fusion device includes truncated side walls so that on end view the body takes on a cylindrical form. In another embodiment, the tapered body is solid and formed of a porous biocompatible material having sufficient structural integrity to maintain the intradiscal space and normal curvature. The material is preferably a porous tantalum composite having fully interconnected pores to facilitate complete bone tissue ingrowth into the implant. In further embodiments, the fusion devices are provided with osteogenic material to facilitate bone ingrowth. A cap is also provided to block the opening of hollow fusion devices. The cap includes an occlusion body and an elongated anchor. In some embodiments the anchor includes a lip which is engageable to openings in the body wall.
摘要翻译： 在一个实施例中的体内融合装置包括限定用于接收骨移植物或骨替代材料的中空内部或室的锥体。 主体限定了在装置的外表面的部分上被中断的外螺纹。 融合装置包括截顶侧壁，使得在端部视图上，身体呈圆柱形。 在另一个实施例中，锥形体是固体的并由具有足够结构完整性的多孔生物相容性材料形成，以保持椎间盘内空间和正常曲率。 该材料优选是具有完全相互连通的孔的多孔钽复合材料，以促进完整的骨组织向植入物中向内生长。 在另外的实施方案中，融合装置设有成骨材料以促进骨向内生长。 还提供盖以阻挡中空融合装置的开口。 帽包括闭塞体和细长锚。 在一些实施例中，锚固件包括可与体壁中的开口接合的唇缘。
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公开(公告)号：US06206922B1
公开(公告)日：2001-03-27
申请号：US09014901
申请日：1998-01-28
申请人： Thomas Zdeblick , Thomas McGahan
发明人： Thomas Zdeblick , Thomas McGahan
IPC分类号： H61F244
CPC分类号： A61B1/3132 , A61B1/3135 , A61B17/025 , A61B17/1671 , A61B17/1757 , A61B17/282 , A61B17/7059 , A61B17/86 , A61B2017/00238 , A61B2017/00261 , A61B2017/0256 , A61B2017/3488 , A61B2090/3904 , A61B2090/3937 , A61F2/442 , A61F2/446 , A61F2/4601 , A61F2/4611 , A61F2002/2835 , A61F2002/2839 , A61F2002/30123 , A61F2002/30153 , A61F2002/30179 , A61F2002/3021 , A61F2002/30217 , A61F2002/30329 , A61F2002/30433 , A61F2002/30507 , A61F2002/30604 , A61F2002/30774 , A61F2002/30777 , A61F2002/30785 , A61F2002/30787 , A61F2002/30789 , A61F2002/3082 , A61F2002/30858 , A61F2002/30863 , A61F2002/30871 , A61F2002/30874 , A61F2002/4475 , A61F2002/448 , A61F2002/4627 , A61F2002/4635 , A61F2220/0025 , A61F2220/0041 , A61F2230/0006 , A61F2230/0019 , A61F2230/0058 , A61F2230/0067
摘要： A laparoscopic surgical technique is provided for preparing a site for implantation of a novel fusion device or implant. In accordance with one embodiment of the technique, a laparoscope is provided having an outer sleeve with distraction fingers at one end to distract the disc space. The laparoscope provides a sealed working channel to the disc space, through which the disc space is distracted, the vertebral endplates and surrounding disc is reamed, and the fusion device inserted. A distraction plug is provided for centering the outer sleeve and for providing midline distraction of the disc space. In one embodiment, a fusion device includes diverging bone screws passing through an end wall and upper and lower walls of the device to engage the adjacent vertebrae. In another embodiment, a connector plate is engaged to bilaterally position fusion devices to prevent rotation and resist expulsion of the devices from the disc space.
摘要翻译： 提供了一种腹腔镜手术技术，用于制备用于植入新型融合装置或植入物的部位。 根据该技术的一个实施例，提供一种腹腔镜，其具有在一端具有分心指的外套筒以分散椎间盘空间。 腹腔镜为椎间盘空间提供了一个密封的工作通道，椎间盘空间被分散，椎骨终板和周围的椎间盘被延伸，并插入融合装置。 提供分心塞用于使外套定心，并用于提供椎间盘空间的中线分心。 在一个实施例中，融合装置包括穿过装置的端壁和上壁和下壁的分叉骨螺钉以接合相邻的椎骨。 在另一个实施例中，连接器板被接合以便双向地定位熔接装置以防止旋转并且阻止装置从盘片空间中排出。
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