公开(公告)号：US06206923B1

公开(公告)日：2001-03-27

申请号：US09227976

申请日：1999-01-08

申请人： Lawrence M. Boyd ,  John A. Pafford

发明人： Lawrence M. Boyd ,  John A. Pafford

IPC分类号： A61F244

CPC分类号： A61L27/3683 ,  A61F2/28 ,  A61F2/30724 ,  A61F2/3094 ,  A61F2/442 ,  A61F2/4455 ,  A61F2/447 ,  A61F2/4611 ,  A61F2002/2835 ,  A61F2002/2839 ,  A61F2002/30018 ,  A61F2002/30059 ,  A61F2002/30131 ,  A61F2002/30153 ,  A61F2002/30154 ,  A61F2002/30176 ,  A61F2002/302 ,  A61F2002/30224 ,  A61F2002/30563 ,  A61F2002/30565 ,  A61F2002/30579 ,  A61F2002/30596 ,  A61F2002/30777 ,  A61F2002/30795 ,  A61F2002/30848 ,  A61F2002/3085 ,  A61F2002/30879 ,  A61F2002/30892 ,  A61F2002/30894 ,  A61F2002/4475 ,  A61F2230/0013 ,  A61F2230/0019 ,  A61F2230/0021 ,  A61F2230/0054 ,  A61F2230/0065 ,  A61F2230/0069 ,  A61F2250/0029 ,  A61F2310/00359 ,  A61L27/3608 ,  A61L27/365 ,  A61L27/3658 ,  A61L27/3687 ,  A61L2430/38 ,  Y10S623/919

摘要： Implantable devices useful for creating bony fusion particularly in intervetebral spinal fusion. The device is formed of bone and has an at least partially demineralized portion between two rigid bone portions creating an area of flexibility. In one application, the area of flexibility may be used to move the device between a reduced size insertion configuration and an expanded implanted configuration. In another use, the area of flexibility may be useful to dampen shock applied to the implant. A method is also disclosed for making the implants and inserting the implants into an intervertebral disc space to promote interbody fusion.

摘要翻译： 用于创建骨融合的植入式装置，特别是在椎间融合术中。 该装置由骨形成，并且在两个刚性骨部之间具有至少部分脱盐的部分，形成柔性区域。 在一个应用中，灵活性的区域可以用于在缩小尺寸的插入配置和扩展的植入配置之间移动设备。 在另一种用途中，柔性区域可用于抑制施加到植入物上的冲击。 还公开了一种用于制造植入物并将植入物插入椎间盘空间以促进体内融合的方法。

公开(公告)号：US06913621B2

公开(公告)日：2005-07-05

申请号：US10609857

申请日：2003-06-30

申请人： Lawrence M. Boyd ,  John A. Pafford

发明人： Lawrence M. Boyd ,  John A. Pafford

IPC分类号： A61B17/88 ,  A61F2/00 ,  A61F2/28 ,  A61F2/30 ,  A61F2/44 ,  A61F2/46 ,  A61L27/36

CPC分类号： A61L27/3683 ,  A61F2/28 ,  A61F2/30724 ,  A61F2/3094 ,  A61F2/442 ,  A61F2/4455 ,  A61F2/447 ,  A61F2/4611 ,  A61F2002/2835 ,  A61F2002/2839 ,  A61F2002/30018 ,  A61F2002/30059 ,  A61F2002/30131 ,  A61F2002/30153 ,  A61F2002/30154 ,  A61F2002/30176 ,  A61F2002/302 ,  A61F2002/30224 ,  A61F2002/30563 ,  A61F2002/30565 ,  A61F2002/30579 ,  A61F2002/30596 ,  A61F2002/30777 ,  A61F2002/30795 ,  A61F2002/30848 ,  A61F2002/3085 ,  A61F2002/30879 ,  A61F2002/30892 ,  A61F2002/30894 ,  A61F2002/4475 ,  A61F2230/0013 ,  A61F2230/0019 ,  A61F2230/0021 ,  A61F2230/0054 ,  A61F2230/0065 ,  A61F2230/0069 ,  A61F2250/0029 ,  A61F2310/00359 ,  A61L27/3608 ,  A61L27/365 ,  A61L27/3658 ,  A61L27/3687 ,  A61L2430/38 ,  Y10S623/919

摘要： Implantable devices useful for creating bony fusion particularly in intervertebral spinal fusion. The device is formed of bone and has an at least partially demineralized portion between two rigid bone portions creating an area of flexibility. In one application, the area of flexibility may be used to move the device between a reduced size insertion configuration and an expanded implanted configuration. In another use, the area of flexibility may be useful to dampen shock applied to the implant. A method is also disclosed for making the implants and inserting the implants into an intervertebral disc space to promote interbody fusion.

摘要翻译： 植入式器械可用于创建骨融合，特别是椎间融合术。 该装置由骨形成，并且在两个刚性骨部之间具有至少部分脱盐的部分，形成柔性区域。 在一个应用中，灵活性的区域可以用于在缩小尺寸的插入配置和扩展的植入配置之间移动设备。 在另一种用途中，柔性区域可用于抑制施加到植入物上的冲击。 还公开了一种用于制造植入物并将植入物插入椎间盘空间以促进体内融合的方法。

公开(公告)号：US5624441A

公开(公告)日：1997-04-29

申请号：US423019

申请日：1995-04-10

申请人： Michael C. Sherman ,  John A. Pafford ,  Richard B. Ashman

发明人： Michael C. Sherman ,  John A. Pafford ,  Richard B. Ashman

IPC分类号： A61B17/70

CPC分类号： A61B17/7041

摘要： An attachment plate for use with a spinal rod system converts a normally side-tightening eyebolt to a top-tightenable arrangement for engaging spinal fixation elements to the spinal rod. The plate is configured for use with spinal fixation elements having a posteriorly projecting central post, one lateral surface of the post contacting the spinal rod when the rod extends through an aperture of the eyebolt. The attachment plate is generally L-shaped with a slot in one portion for receiving the posteriorly projecting threaded post of the eyebolt. The plate includes a flange portion having a surface configured to engage the lateral surface of the fixation element post opposite the spinal rod. The attachment plate includes a camming segment to provide a clamping force component directed toward the flange portion of the plate to thereby tightly clamp the spinal rod to the fixation element post when a nut is threaded onto the eyebolt threaded post.

摘要翻译： 与脊椎杆系统一起使用的附接板将正常侧紧螺旋弹簧转换成顶部可收紧的装置，用于将脊柱固定元件接合到脊柱杆。 板被构造成用于具有后突出的中心柱的脊柱固定元件，当杆延伸穿过吊环的孔时，柱的一个侧表面接触脊柱杆。 附接板通常为L形，在一个部分中具有槽，用于接收吊环的后突出的螺纹柱。 板包括凸缘部分，其具有被构造成与固定元件柱的与脊柱杆相对的侧表面接合的表面。 附接板包括凸轮段，以提供朝向板的凸缘部分的夹紧力分量，从而当螺母拧到吊环螺纹柱上时，将脊柱杆紧紧地固定到固定元件柱上。

公开(公告)号：US07329283B2

公开(公告)日：2008-02-12

申请号：US11094699

申请日：2005-03-30

申请人： Bradley T. Estes ,  Larry Boyd ,  John A. Pafford

发明人： Bradley T. Estes ,  Larry Boyd ,  John A. Pafford

IPC分类号： A61F2/44

CPC分类号： A61F2/4644 ,  A61B17/1604 ,  A61B17/1671 ,  A61B17/8875 ,  A61F2/28 ,  A61F2/30724 ,  A61F2/3094 ,  A61F2/442 ,  A61F2/446 ,  A61F2/4601 ,  A61F2/4611 ,  A61F2/468 ,  A61F2002/2817 ,  A61F2002/2835 ,  A61F2002/2839 ,  A61F2002/30057 ,  A61F2002/30062 ,  A61F2002/30131 ,  A61F2002/30143 ,  A61F2002/30224 ,  A61F2002/30596 ,  A61F2002/30616 ,  A61F2002/30617 ,  A61F2002/30772 ,  A61F2002/30795 ,  A61F2002/30797 ,  A61F2002/3082 ,  A61F2002/30871 ,  A61F2002/4475 ,  A61F2002/448 ,  A61F2002/4627 ,  A61F2002/4635 ,  A61F2002/4649 ,  A61F2210/0004 ,  A61F2230/0013 ,  A61F2230/0017 ,  A61F2230/0069 ,  A61F2250/0097 ,  A61F2310/00011 ,  A61F2310/00179 ,  Y10S623/908

摘要： Open chambered spacers, implanting tools and methods are provided. The spacers 500′ include a body 505′ having a wall 506′ which defines a chamber 530′ and an opening 531′ in communication with the chamber 530′. In one embodiment the wall 506′ includes a pair of arms 520′, 521′ facing one another and forming a mouth 525′ to the chamber 530′. Preferably, one of the arms 520′ is truncated relative to the other, forming a channel 526. In one aspect the body 505′ is a bone dowel comprising an off-center plug from the diaphysis of a long bone. The tools 800 include spacer engaging means for engaging a spacer and occlusion means for blocking an opening defined in the spacer. In some embodiments, the occlusion means 820 includes a plate 821 extendable from the housing 805. In one specific embodiment the plate 821 defines a groove 822 which is disposed around a fastener 830 attached to the housing 805 so that the plate 821 is slideable relative to the housing 805.

摘要翻译： 提供开放式隔板，植入工具和方法。 间隔件500'包括主体505'，其具有限定室530'的壁506'和与室530'连通的开口531'。 在一个实施例中，壁506'包括彼此面对的一对臂520'和521'，并且形成到腔室530'的口525'。 优选地，臂520'中的一个相对于另一个截断，形成通道526。 在一个方面，主体505'是包括来自长骨骨干的偏心塞的骨榫。 工具800包括用于接合间隔件的间隔件接合装置和用于阻挡限定在间隔件中的开口的闭塞装置。 在一些实施例中，闭塞装置820包括可从壳体805延伸的板821。 在一个具体实施例中，板821限定凹槽822，凹槽822围绕附接到壳体805的紧固件830设置，使得板821可相对于壳体805滑动。

公开(公告)号：US06695882B2

公开(公告)日：2004-02-24

申请号：US10035074

申请日：2001-12-28

申请人： John R. Bianchi ,  Kevin C. Carter ,  Bradley T. Estes ,  Larry Boyd ,  John A. Pafford

发明人： John R. Bianchi ,  Kevin C. Carter ,  Bradley T. Estes ,  Larry Boyd ,  John A. Pafford

IPC分类号： A61F244

CPC分类号： A61F2/4644 ,  A61B17/1604 ,  A61B17/1671 ,  A61B17/8875 ,  A61F2/28 ,  A61F2/30724 ,  A61F2/3094 ,  A61F2/442 ,  A61F2/446 ,  A61F2/4601 ,  A61F2/4611 ,  A61F2/468 ,  A61F2002/2817 ,  A61F2002/2835 ,  A61F2002/2839 ,  A61F2002/30057 ,  A61F2002/30062 ,  A61F2002/30131 ,  A61F2002/30143 ,  A61F2002/30224 ,  A61F2002/30596 ,  A61F2002/30616 ,  A61F2002/30617 ,  A61F2002/30772 ,  A61F2002/30795 ,  A61F2002/30797 ,  A61F2002/3082 ,  A61F2002/30871 ,  A61F2002/4475 ,  A61F2002/448 ,  A61F2002/4627 ,  A61F2002/4635 ,  A61F2002/4649 ,  A61F2210/0004 ,  A61F2230/0013 ,  A61F2230/0017 ,  A61F2230/0069 ,  A61F2250/0097 ,  A61F2310/00011 ,  A61F2310/00179 ,  Y10S623/908

摘要： Open chambered spacers, implanting tools and methods are provided. The spacers 500′ include a body 505′ having a wall 506′ which defines a chamber 530′ and an opening 531′ in communication with the chamber 530′. In one embodiment the wall 506′ includes a pair of arms 520′, 521′ facing one another and forming a mouth 525′ to the chamber 530′. Preferably, one of the arms 520′ is truncated relative to the other, forming a channel 526. In one aspect the body 505′ is a bone dowel comprising an off-center plug from the diaphysis of a long bone. The tools 800 include spacer engaging means for engaging a spacer and occlusion means for blocking an opening defined in the spacer. In some embodiments, the occlusion means 820 includes a plate 821 extendable from the housing 805. In one specific embodiment the plate 821 defines a groove 822 which is disposed around a fastener 830 attached to the housing 805 so that the plate 821 is slideable relative to the housing 805.

公开(公告)号：US09237908B2

公开(公告)日：2016-01-19

申请号：US11408725

申请日：2006-04-21

申请人： Jared W. Walkenhorst ,  Michael E. Landry ,  Thomas G. Wilson ,  John A. Pafford

发明人： Jared W. Walkenhorst ,  Michael E. Landry ,  Thomas G. Wilson ,  John A. Pafford

IPC分类号： A61B17/70 ,  A61B17/84 ,  A61B17/88 ,  A61B17/90

CPC分类号： A61B17/7067 ,  A61B17/7055 ,  A61B17/7064 ,  A61B17/842 ,  A61B17/8875 ,  A61B2017/90

摘要： A system for dynamic stabilization of the spine includes a bone engaging fastener configured to be anchored in a vertebra and a deflectable element mounted on the fastener. The deflectable element or bumper is configured and arranged to contact a portion of an adjacent vertebra, such as the facet, during extension of the spine, while offering no resistance during flexion. In certain embodiments, a cable may be fastened to the bone engaging fastener and arranged to contact a portion of the adjacent vertebra, such as the spinous process, during flexion of the spine. In one surgical technique of the invention, a contralateral approach is used to introduce the bone engaging fastener through the deflectable element and into the vertebra.

公开(公告)号：US07993406B2

公开(公告)日：2011-08-09

申请号：US12660539

申请日：2010-03-01

申请人： John R. Bianchi ,  Kevin C. Carter ,  Bradley T. Estes ,  Larry Boyd ,  John A. Pafford

发明人： John R. Bianchi ,  Kevin C. Carter ,  Bradley T. Estes ,  Larry Boyd ,  John A. Pafford

IPC分类号： A61F2/44

CPC分类号： A61F2/4644 ,  A61B17/1604 ,  A61B17/1671 ,  A61B17/8875 ,  A61F2/28 ,  A61F2/30724 ,  A61F2/3094 ,  A61F2/442 ,  A61F2/446 ,  A61F2/4601 ,  A61F2/4611 ,  A61F2/468 ,  A61F2002/2817 ,  A61F2002/2835 ,  A61F2002/2839 ,  A61F2002/30057 ,  A61F2002/30062 ,  A61F2002/30131 ,  A61F2002/30143 ,  A61F2002/30224 ,  A61F2002/30596 ,  A61F2002/30616 ,  A61F2002/30617 ,  A61F2002/30772 ,  A61F2002/30795 ,  A61F2002/30797 ,  A61F2002/3082 ,  A61F2002/30871 ,  A61F2002/4475 ,  A61F2002/448 ,  A61F2002/4627 ,  A61F2002/4635 ,  A61F2002/4649 ,  A61F2210/0004 ,  A61F2230/0013 ,  A61F2230/0017 ,  A61F2230/0069 ,  A61F2250/0097 ,  A61F2310/00011 ,  A61F2310/00179 ,  Y10S623/908

摘要： Open chambered spacers, implanting tools and methods are provided. The spacers 500′ include a body 505′ having a wall 506′ which defines a chamber 530′ and an opening 531′ in communication with the chamber 530′. In one embodiment the wall 506′ includes a pair of arms 520′, 521′ facing one another and forming a mouth 525′ to the chamber 530′. Preferably, one of the arms 520′ is truncated relative to the other, forming a channel 526. In one aspect the body 505′ does a bone dowel comprise an off-center plug from the diathesis of a long bone. The tools 800 include spacer engaging means for engaging a spacer and occlusion means for blocking an opening defined in the spacer. In some embodiments, the occlusion means 820 includes a plate 821 extendable from the housing 805. In one specific embodiment the plate 821 defines a groove 822 which is disposed around a fastener 830 attached to the housing 805 so that the plate 821 is sliceable relative to the housing 805.

摘要翻译： 提供开放式隔板，植入工具和方法。 间隔件500'包括主体505'，其具有限定室530'的壁506'和与室530'连通的开口531'。 在一个实施例中，壁506'包括彼此面对的一对臂520'和521'，并且形成到腔室530'的口525'。 优选地，臂520'中的一个相对于另一个被截去，形成通道526.在一个方面，主体505'执行骨定位销，其包括来自长骨的素质的偏心塞。 工具800包括用于接合间隔件的间隔件接合装置和用于阻挡限定在间隔件中的开口的闭塞装置。 在一些实施例中，闭塞装置820包括可从壳体805延伸的板821.在一个具体实施例中，板821限定凹槽822，凹槽822围绕附接到壳体805的紧固件830设置，使得板821可相对于 外壳805。

公开(公告)号：US20100217396A1

公开(公告)日：2010-08-26

申请号：US12660539

申请日：2010-03-01

申请人： John R. Bianchi ,  Kevin C. Carter ,  Bradley T. Estes ,  Larry Boyd ,  John A. Pafford

发明人： John R. Bianchi ,  Kevin C. Carter ,  Bradley T. Estes ,  Larry Boyd ,  John A. Pafford

IPC分类号： A61F2/44

CPC分类号： A61F2/4644 ,  A61B17/1604 ,  A61B17/1671 ,  A61B17/8875 ,  A61F2/28 ,  A61F2/30724 ,  A61F2/3094 ,  A61F2/442 ,  A61F2/446 ,  A61F2/4601 ,  A61F2/4611 ,  A61F2/468 ,  A61F2002/2817 ,  A61F2002/2835 ,  A61F2002/2839 ,  A61F2002/30057 ,  A61F2002/30062 ,  A61F2002/30131 ,  A61F2002/30143 ,  A61F2002/30224 ,  A61F2002/30596 ,  A61F2002/30616 ,  A61F2002/30617 ,  A61F2002/30772 ,  A61F2002/30795 ,  A61F2002/30797 ,  A61F2002/3082 ,  A61F2002/30871 ,  A61F2002/4475 ,  A61F2002/448 ,  A61F2002/4627 ,  A61F2002/4635 ,  A61F2002/4649 ,  A61F2210/0004 ,  A61F2230/0013 ,  A61F2230/0017 ,  A61F2230/0069 ,  A61F2250/0097 ,  A61F2310/00011 ,  A61F2310/00179 ,  Y10S623/908

摘要： Open chambered spacers, implanting tools and methods are provided. The spacers 500′ include a body 505′ having a wall 506′ which defines a chamber 530′ and an opening 531′ in communication with the chamber 530′. In one embodiment the wall 506′ includes a pair of arms 520′, 521′ facing one another and forming a mouth 525′ to the chamber 530′. Preferably, one of the arms 520′ is truncated relative to the other, forming a channel 526. In one aspect the body 505′ is a bone dowel comprising an off-center plug from the diaphysis of a long bone. The tools 800 include spacer engaging means for engaging a spacer and occlusion means for blocking an opening defined in the spacer. In some embodiments, the occlusion means 820 includes a plate 821 extendable from the housing 805. In one specific embodiment the plate 821 defines a groove 822 which is disposed around a fastener 830 attached to the housing 805 so that the plate 821 is slideable relative to the housing 805.

公开(公告)号：US06409765B1

公开(公告)日：2002-06-25

申请号：US09453787

申请日：1999-12-03

申请人： John R. Bianchi ,  Kevin C. Carter ,  Bradley T. Estes ,  Larry Boyd ,  John A. Pafford

发明人： John R. Bianchi ,  Kevin C. Carter ,  Bradley T. Estes ,  Larry Boyd ,  John A. Pafford

IPC分类号： A61F244

CPC分类号： A61F2/4644 ,  A61B17/1604 ,  A61B17/1671 ,  A61B17/8875 ,  A61F2/28 ,  A61F2/30724 ,  A61F2/3094 ,  A61F2/442 ,  A61F2/446 ,  A61F2/4601 ,  A61F2/4611 ,  A61F2/468 ,  A61F2002/2817 ,  A61F2002/2835 ,  A61F2002/2839 ,  A61F2002/30057 ,  A61F2002/30062 ,  A61F2002/30131 ,  A61F2002/30143 ,  A61F2002/30224 ,  A61F2002/30596 ,  A61F2002/30616 ,  A61F2002/30617 ,  A61F2002/30772 ,  A61F2002/30795 ,  A61F2002/30797 ,  A61F2002/3082 ,  A61F2002/30871 ,  A61F2002/4475 ,  A61F2002/448 ,  A61F2002/4627 ,  A61F2002/4635 ,  A61F2002/4649 ,  A61F2210/0004 ,  A61F2230/0013 ,  A61F2230/0017 ,  A61F2230/0069 ,  A61F2250/0097 ,  A61F2310/00011 ,  A61F2310/00179 ,  Y10S623/908

摘要： Open chambered spacers, implanting tools and methods are provided. The spacers 500′ include a body 505′ having a wall 506′ which defines a chamber 530′ and an opening 531′ in communication with the chamber 530′. In one embodiment the wall 506′ includes a pair of arms 520′, 521′ facing one another and forming a mouth 525′ to the chamber 530′. Preferably, one of the arms 520′ is truncated relative to the other, forming a channel 526. In one aspect the body 505′ is a bone dowel comprising an off-center plug from the diaphysis of a long bone. The tools 800 include spacer engaging means for engaging a spacer and occlusion means for blocking an opening defined in the spacer. In some embodiments, the occlusion means 820 includes a plate 821 extendable from the housing 805. In one specific embodiment the plate 821 defines a groove 822 which is disposed around a fastener 830 attached to the housing 805 so that the plate 821 is slideable relative to the housing 805.

公开(公告)号：US07678149B2

公开(公告)日：2010-03-16

申请号：US10699175

申请日：2003-10-31

申请人： John R. Bianchi ,  Kevin C. Carter ,  Bradley T. Estes ,  Larry Boyd ,  John A. Pafford

发明人： John R. Bianchi ,  Kevin C. Carter ,  Bradley T. Estes ,  Larry Boyd ,  John A. Pafford

IPC分类号： A61F2/44

CPC分类号： A61F2/4644 ,  A61B17/1604 ,  A61B17/1671 ,  A61B17/8875 ,  A61F2/28 ,  A61F2/30724 ,  A61F2/3094 ,  A61F2/442 ,  A61F2/446 ,  A61F2/4601 ,  A61F2/4611 ,  A61F2/468 ,  A61F2002/2817 ,  A61F2002/2835 ,  A61F2002/2839 ,  A61F2002/30057 ,  A61F2002/30062 ,  A61F2002/30131 ,  A61F2002/30143 ,  A61F2002/30224 ,  A61F2002/30596 ,  A61F2002/30616 ,  A61F2002/30617 ,  A61F2002/30772 ,  A61F2002/30795 ,  A61F2002/30797 ,  A61F2002/3082 ,  A61F2002/30871 ,  A61F2002/4475 ,  A61F2002/448 ,  A61F2002/4627 ,  A61F2002/4635 ,  A61F2002/4649 ,  A61F2210/0004 ,  A61F2230/0013 ,  A61F2230/0017 ,  A61F2230/0069 ,  A61F2250/0097 ,  A61F2310/00011 ,  A61F2310/00179 ,  Y10S623/908

摘要： Open chambered spacers, implanting tools and methods are provided. The spacers 500′ include a body 505′ having a wall 506′ which defines a chamber 530′ and an opening 531′ in communication with the chamber 530′. In one embodiment the wall 506′ includes a pair of arms 520′, 521′ facing one another and forming a mouth 525′ to the chamber 530′. Preferably, one of the arms 520′ is truncated relative to the other, forming a channel 526. In one aspect the body 505′ is a bone dowel comprising an off-center plug from the diaphysis of a long bone. The tools 800 include spacer engaging means for engaging a spacer and occlusion means for blocking an opening defined in the spacer. In some embodiments, the occlusion means 820 includes a plate 821 extendable from the housing 805. In one specific embodiment the plate 821 defines a groove 822 which is disposed around a fastener 830 attached to the housing 805 so that the plate 821 is slideable relative to the housing 805.

摘要翻译： 提供开放式隔板，植入工具和方法。 间隔件500'包括主体505'，其具有限定室530'的壁506'和与室530'连通的开口531'。 在一个实施例中，壁506'包括彼此面对的一对臂520'和521'，并且形成到腔室530'的口525'。 优选地，臂520'中的一个相对于另一个截断，形成通道526.在一个方面，主体505'是包括来自长骨骨干的偏心塞的骨榫。 工具800包括用于接合间隔件的间隔件接合装置和用于阻挡限定在间隔件中的开口的闭塞装置。 在一些实施例中，闭塞装置820包括可从壳体805延伸的板821.在一个具体实施例中，板821限定凹槽822，凹槽822设置在附接到壳体805的紧固件830周围，使得板821可相对于 外壳805。