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1. 发明申请

US20060241626A1 Instruments and techniques for disc space preparation 有权
公开(公告)号：US20060241626A1
公开(公告)日：2006-10-26
申请号：US11378929
申请日：2006-03-17
申请人： Thomas McGahan , Steven DeRidder , Eric Lange
发明人： Thomas McGahan , Steven DeRidder , Eric Lange
IPC分类号： A61B17/00
CPC分类号： A61B17/025 , A61B17/1604 , A61B17/1671 , A61B17/1757 , A61B2017/0256 , A61B2017/1602 , A61B2090/033 , A61B2090/062 , A61F2/442 , A61F2/4455 , A61F2/4611 , A61F2002/30113 , A61F2002/30772 , A61F2002/30828 , A61F2002/30879 , A61F2002/4475 , A61F2002/4627 , A61F2230/0006
摘要： A series of instruments (30, 80, 120, 210, 510, 550) are provided for direct-anterior and oblique-anterior disc space and end plate preparation. The instruments (30, 80, 120, 210, 510, 550) provide precise guidance for channel formation in the vertebral endplates by guiding rotating and bladed cutting instruments (122, 250, 580). Instrumentation (550) for oblique-anterior disc space preparation includes compound angulation to account for the angle of approach to the spine and the angulation between adjacent vertebrae. Methods and techniques for use of the instruments (30, 80, 120, 210, 510, 550) are also described.

2. 发明申请

US20100125333A1 Methods and instruments for interbody fusion 有权
标题翻译：体内融合方法与仪器
公开(公告)号：US20100125333A1
公开(公告)日：2010-05-20
申请号：US12590739
申请日：2009-11-13
申请人： Thomas Zdeblick , Thomas McGahan
发明人： Thomas Zdeblick , Thomas McGahan
IPC分类号： A61F2/44 , A61B17/56
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。

3. 发明申请

US20090043394A1 Spinal fusion implants and tools for insertion and revision 审中-公开
标题翻译：脊柱融合植入物和插入和修复的工具
公开(公告)号：US20090043394A1
公开(公告)日：2009-02-12
申请号：US12287902
申请日：2008-10-15
申请人： Thomas Zdeblick , William F. McKay , Larry Boyd , Eddie Ray, III , Thomas McGahan
发明人： Thomas Zdeblick , William F. McKay , Larry Boyd , Eddie Ray, III , Thomas McGahan
IPC分类号： A61F2/44 , A61F2/28
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。

4. 发明申请

US20050119753A1 Anterior impacted bone graft and driver instruments 审中-公开
标题翻译：前部受影响的骨移植和驱动器械
公开(公告)号：US20050119753A1
公开(公告)日：2005-06-02
申请号：US11030459
申请日：2005-01-05
申请人： Thomas McGahan , Steven DeRidder , Dayna Buskirk , Eric Lange
发明人： Thomas McGahan , Steven DeRidder , Dayna Buskirk , Eric Lange
IPC分类号： A61B17/56 , A61F2/00 , A61F2/28 , A61F2/30 , A61F2/44 , A61F2/46
CPC分类号： A61F2/4465 , A61F2/28 , A61F2/442 , A61F2/4611 , A61F2002/2839 , A61F2002/3023 , A61F2002/30774 , A61F2002/30787 , A61F2002/30879 , A61F2002/30892 , A61F2002/30904 , A61F2002/4475 , A61F2002/4627 , A61F2230/0069 , A61F2310/00017 , A61F2310/00023 , A61F2310/00179 , A61F2310/00359
摘要： Instrument and implants are disclosed which provide for insertion of an implant into an intervertebral disc space from multiple approaches to the spine. Specifically, as a preferred aspect of the invention the implant includes a tapered portion and the implant may be inserted from multiple approaches to the spine with the orientation and taper properly oriented in the disc space regardless of the approach.
摘要翻译：公开了提供将植入物插入椎间盘空间的多个方法到脊柱的仪器和植入物。具体地，作为本发明的优选方面，植入物包括锥形部分，并且植入物可以从多个方式插入到脊柱，其方向和锥度适当地定向在椎间盘空间中，而不管接近。

5. 再颁专利

USRE37005E Anterior spinal instrumentation and method for implantation and revision 有权
公开(公告)号：USRE37005E
公开(公告)日：2000-12-26
申请号：US487040
申请日：2000-01-19
申请人： Gary K. Michelson , Lawrence M. Boyd , Thomas McGahan
发明人： Gary K. Michelson , 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.

6. 发明授权

US06139551A Anterior spinal instrumentation and method for implantation and revision 失效
标题翻译：前路脊髓手术及植入修复方法
公开(公告)号：US06139551A
公开(公告)日：2000-10-31
申请号：US86931
申请日：1998-05-29
申请人： Gary K. Michelson , Lawrence M. Boyd , Thomas McGahan
发明人： Gary K. Michelson , 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.
摘要翻译：用于脊柱前固定的系统和方法利用啮合在椎间盘内空间中的圆柱形植入物在构造体的头端和尾端。植入物是填充有骨材料的圆柱形融合装置（10），以促进椎间盘的向内生长和融合。连接构件（40）连接到每个融合装置（10），并且使用吊环组件（53,54,55）将脊柱杆（50）连接到每个附接构件。在另一发明的方法中，通过去除融合装置来实现构建体的修订。每个融合装置由细长的引导构件（62）接合，圆柱形环钻（70）在该引导构件上前进。所述环钻（70）用于在所述融合植入物周围提取骨材料的芯（84），同时所述引导构件（62）用于移除含有所述融合植入物（10）的骨芯（84）。在本发明的另一方面，提供了一种与植入的融合装置（10）接合的移除插入件（90,90'）。移除插入物（90,90'）可以用于引导围绕融合装置的环钻（70），并且一旦产生骨芯就连接到移除工具（100）。拆卸工具（100）包括附接到移除插入件（90,90'）的轴（101）和可滑动地安装在轴上的敲击锤（104）。

7. 发明授权

US5797917A Anterior spinal instrumentation and method for implantation and revision 失效
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.

8. 发明申请

US20110238184A1 METHODS AND INSTRUMENTS FOR INTERBODY FUSION 审中-公开
标题翻译： INTERBODY FUSION的方法和仪器
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。

9. 发明授权

US07621958B2 Methods and instruments for interbody fusion 失效
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.

10. 发明申请

US20070288007A1 Methods and instrument for vertebral interbody fusion 有权
标题翻译：椎体间融合方法与仪器
公开(公告)号：US20070288007A1
公开(公告)日：2007-12-13
申请号：US11725618
申请日：2007-03-20
申请人： J. Burkus , Thomas Zdeblick , Thomas McGahan , Steven DeRidder
发明人： J. Burkus , Thomas Zdeblick , Thomas McGahan , Steven DeRidder
IPC分类号： A61B17/56 , A61F2/44
CPC分类号： A61B17/1671 , A61B17/025 , A61B17/1735 , A61B17/1757 , A61B90/94 , A61B2017/0256 , A61B2090/034 , A61F2/442 , A61F2/446 , A61F2/4611 , A61F2002/30611 , A61F2002/3082 , A61F2002/3085 , A61F2002/30871 , A61F2002/30904 , A61F2002/4475 , A61F2002/448 , A61F2002/4623 , A61F2002/4627 , A61F2002/4681 , A61F2250/0063
摘要： Methods and instrumentation particularly adapted for disc space preparation for insertion of implants from an anterior approach to the spine are provided. The instruments include a guide sleeve defining a channel having overlapping cylindrical working channel portions and lateral non-distracting extensions extending from reduced thickness wall portions. The guide sleeve has an overall reduced width configuration. A pair of distractors are provided. A first distractor includes a shaft and distal tip, each having convex walls. A second distractor includes a shaft and distal tip including a recessed area at least along the tip. The first distractor is at least partially received within the recessed area of the second distractor when the first and second distractors are in side-by-side relation and a reduced overall width of the distractors is obtained. Preferably, the first and second distractors are used with the guide sleeve. Methods using the disclosed instruments are also provided.
摘要翻译：提供了特别适用于椎间盘准备的用于将植入物从前路插入到脊柱的方法和仪器。仪器包括引导套筒，其限定具有重叠的圆柱形工作通道部分的通道和从减小厚度的壁部分延伸的横向非牵引延伸部。引导套具有整体减小的宽度构型。提供了一对干扰物。第一牵引器包括轴和远端，每个具有凸壁。第二牵引器包括轴和远端，其至少沿着尖端包括凹陷区域。当第一和第二牵引器处于并排关系时，第一牵引器至少部分地被容纳在第二牵引器的凹陷区域内，并且获得了牵引器的总体宽度的缩小。优选地，第一和第二牵引器与引导套筒一起使用。还提供了使用所公开的仪器的方法。

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