Modular polyaxial locking pedicle screw
    42.
    发明授权
    Modular polyaxial locking pedicle screw 失效
    模块多轴锁定椎弓根螺钉

    公开(公告)号:US5725528A

    公开(公告)日:1998-03-10

    申请号:US799720

    申请日:1997-02-12

    CPC classification number: A61B17/7041 A61B17/7035

    Abstract: A modular polyaxial pedicle screw and orthopaedic rod implant device including same includes a shaft portion, a cuff, a stem portion, and a rod coupling sub-assembly. The shaft portion is designed to be inserted into the pedicle, has a hemispherical upper portion, and includes a second threading formed on the exterior surface adjacent to the hemispherical protuberance. The stem portion is a threaded post having an enlarged lower socket portion which includes a spherical recess formed at the base thereof, the recess being ideally suited to polyaxially rotate on the hemispherical upper portion of the shaft. The cuff is a cylindrical element designed to seat around the interface of the hemispherical portion of the shaft and the lower socket portion of the stem, initially so that the stem and shaft may polyaxially rotate relative to one another, and subsequently to hold the stem and shaft in final securement. The rod coupling sub-assembly consists of a rod coupling element which is mountable on the post portion of the stem, and a top locking nut which secures the rod coupling element to the post between the nut and the cuff. Spacer elements may be utilized which are positioned on the post between the cuff and the rod coupling element to permit axial variability on the stem in addition to the angular variability inherent in the shaft and stem interface.

    Abstract translation: 包括其的模块化多轴椎弓根螺钉和矫形棒植入装置包括轴部分,袖带,杆部分和杆联接子组件。 轴部被设计成插入到椎弓根中,具有半球形上部,并且包括形成在与半球形突起相邻的外表面上的第二螺纹。 杆部是具有扩大的下插座部分的螺纹柱,该下插座部分包括形成在其底部的球形凹部,该凹部理想地适合于在轴的半球形上部上进行多轴旋转。 袖带是圆柱形元件,其设计成围绕轴的半球形部分的接口和杆的下部插座部分的接口开始,使得杆和轴可以相对于彼此多轴旋转,并且随后保持杆和 最终固定的轴。 杆联接子组件由可连接在杆的柱部上的杆联接元件和顶部锁定螺母组成,顶部锁定螺母将杆联接元件固定到螺母和箍之间的柱上。 可以使用间隔元件,其位于袖带和杆联接元件之间的柱上,以允许轴和杆接口固有的角度变化之外的轴上的轴向变化。

    Polyaxial pedicle screw
    43.
    发明授权
    Polyaxial pedicle screw 失效
    多轴椎弓根螺钉

    公开(公告)号:US5690630A

    公开(公告)日:1997-11-25

    申请号:US772403

    申请日:1996-12-23

    Abstract: A polyaxial orthopedic device for use with rod implant apparatus includes a screw having a curvate head, a locking collar disposed therearound, and a receiving member having a linearly tapered tapered socket in which the screw and the collar are nested. The locking collar is slotted and tapered, and has a semi-spherical interior volume into which the screw head is initially polyaxially held. The receiving member has a transverse channel formed in it for receiving a rod, and an axial bore having a linearly tapered chamber in the bottom portion thereof. The collar is inserted down the bore from the top to seat in the chamber, and the screw is subsequently inserted up through the bottom of the bore and into the collar. The linear taper of the chamber provides a radially inward force on the locking collar when the collar is forced downward therein. This radially inward force causes the locking collar to crush lock against the head of the screw, therein locking the two at the given angulation. It is the placement of the rod in the transverse channel, against the top of the collar, and the subsequent locking down of the rod in the channel which provides the downward force against the locking collar, which in turn locks the screw in its given angulation.

    Abstract translation: 用于杆植入装置的多轴矫形装置包括具有弯曲头部的螺钉,设置在其周围的锁定环,以及具有线性锥形锥形插座的接收构件,螺钉和套环嵌入其中。 锁定环是开槽和锥形的,并且具有半球形的内部容积,螺钉头最初被多轴保持在其中。 接收构件具有形成在其中的用于接收杆的横向通道,以及在其底部具有线性渐缩室的轴向孔。 套环从顶部向下插入孔中以便位于腔室中,并且螺钉随后通过孔的底部插入到套环中。 当套环被强制向下时,腔室的线性锥度在锁定环上提供径向向内的力。 这种径向向内的力导致锁定环被压紧锁定在螺钉的头部上,锁定环在给定的角度处锁定两者。 将杆放置在横向通道中,抵靠轴环的顶部,随后将杆向下锁定在通道中,该向下的力朝向锁定套环提供向下的力,这又将螺钉锁定在其给定的角度 。

    Extending hook and polyaxial coupling element device for use with side
loading road fixation devices
    45.
    发明授权
    Extending hook and polyaxial coupling element device for use with side loading road fixation devices 失效
    用于侧面装载道路固定装置的钩和多轴联接元件装置

    公开(公告)号:US5609594A

    公开(公告)日:1997-03-11

    申请号:US542528

    申请日:1995-10-13

    CPC classification number: A61B17/7055 A61B17/7037 A61B17/7032 A61B17/7034

    Abstract: A lamina hook is provided having a rod receiving body portion of variable length. Selected embodiments include a polyaxial coupling element for angulating the body portion. In each embodiment, the blade portion has a cylindrical recess and the body includes a shaft portion which is slideably mounted therein. The top of the cylindrical recess is slotted, threaded and tapered for receiving thereon a tightening nut; the tightening thereof being used to crush lock the shaft in the recess. In a first embodiment, the upper portion of the body includes a side loading rod receiving channel. The rod is locked within the channel by means of a sleeve and top locking nut. In a second embodiment, the shaft has a semi-spherical head on which a separate coupling element, having a lower, an intermediate, and an upper portion, is mounted. The lower portion has a slotted exterior taper and a semi-spherical interior chamber in which the head is initially polyaxially disposed. The intermediate portion has the side rod receiving channel. The top portion has a threading for receiving a top locking nut. A locking ring is disposed about the coupling element, at the top thereof, being initially positioned above the lower ledge of the recess such that the rod seats against it. As in the first embodiment, a sleeve and locking nut lock the rod in the recess; the process of doing which causes the locking ring to descend, crush locking the head in the interior chamber.

    Abstract translation: 提供了具有可变长度的杆接收体部分的薄片钩。 所选择的实施例包括用于使主体部分成角度的多轴耦合元件。 在每个实施例中,叶片部分具有圆柱形凹部,并且主体包括可滑动地安装在其中的轴部。 圆柱形凹槽的顶部开槽,螺纹和锥形,用于在其上接收紧固螺母; 其紧固被用于将轴锁定在凹部中。 在第一实施例中,主体的上部包括侧装载杆接收通道。 杆通过套筒和顶部锁紧螺母锁定在通道内。 在第二实施例中,轴具有半球形头部,其上安装有具有下部中间部分和上部的单独的联接元件。 下部具有开槽的外部锥形和半球形的内部腔室,其中头部最初被多次布置。 中间部分具有侧杆接收通道。 顶部具有用于接收顶部锁紧螺母的螺纹。 锁定环围绕联接元件设置在其顶部处,其初始位于凹部的下凸缘上方,使得杆抵靠它。 如在第一实施例中,套筒和锁定螺母将杆锁定在凹槽中; 这样做的过程导致锁定环下降,将头锁定在内部腔室中。

    Advanced polyaxial locking hook and coupling element device for use with
side loading rod fixation devices
    46.
    发明授权
    Advanced polyaxial locking hook and coupling element device for use with side loading rod fixation devices 失效
    先进的多轴锁定钩和耦合元件装置,用于侧装载杆固定装置

    公开(公告)号:US5578033A

    公开(公告)日:1996-11-26

    申请号:US542542

    申请日:1995-10-13

    CPC classification number: A61B17/7055 A61B17/7037 A61B17/7032 A61B17/7034

    Abstract: A hook device for use with support rod implantation apparatus in the spine, having a rod receiving body polyaxially mounted to a blade portion such that the body may be polyaxially maneuvered relative to the placement of the blade, for easy rod coupling. The blade portion of the device has a semi-spherical head portion which sits above the lamina. The rod receiving portion is a separate coupling element having lower, intermediate, and upper portions. The lower portion is slotted and tapered, and has a semi-spherical interior chamber in which the semi-spherical head is polyaxially disposed. The intermediate portion has a side recess for receiving the rod. The top portion is threaded for a top locking nut. A locking ring is disposed about the coupling element, the top of the coupling element being initially positioned above the lower ledge of the side recess such that the rod initially seats against the top surface of the locking ring. A rod retaining sleeve is provided about the coupling element; the sleeve having a lower surface which seats against the top of the rod. When the rod is in place, the top locking nut is tightened to provides a downward force onto the sleeve. The sleeve, in turn, applies a force against the rod, which causes the locking ring to descend down the tapered lower portion, therein locking the semi-spherical head in the interior chamber of the coupling element, and locking it into position relative to the blade portion.

    Abstract translation: 一种与脊柱中的支撑杆植入装置一起使用的钩装置,其具有多个轴向安装到叶片部分上的杆接收体,使得该主体可相对于叶片的放置进行多轴旋转,以便于杆联接。 装置的刀片部分具有位于层板上方的半球形头部。 杆接收部分是具有下部,中间和上部的单独的联接元件。 下部是开槽和锥形的,并且具有半球形内部室,其中半球形头部被多重布置。 中间部分具有用于容纳杆的侧凹部。 顶部螺纹用于顶部锁紧螺母。 锁定环围绕联接元件设置,联接元件的顶部最初位于侧凹槽的下凸缘的上方,使得杆最初抵靠锁环的顶表面。 围绕联接元件设置杆保持套筒; 套筒具有抵靠杆顶部的下表面。 当杆处于适当位置时,顶部锁紧螺母被拧紧以向套筒提供向下的力。 套筒又向杆施加力,这使得锁定环向下降下锥形下部,其中将半球形头部锁定在联接元件的内部腔室中,并将其锁定在相对于 刀片部分。

    Extending hook and polyaxial coupling element device for use with top
loading rod fixation devices
    47.
    发明授权
    Extending hook and polyaxial coupling element device for use with top loading rod fixation devices 失效
    扩展钩和多轴联接元件装置,用于顶部装载杆固定装置

    公开(公告)号:US5575792A

    公开(公告)日:1996-11-19

    申请号:US542529

    申请日:1995-10-13

    CPC classification number: A61B17/7037 A61B17/7032

    Abstract: A lamina hook device which has a rod receiving body portion of variable length. Selected embodiments include a polyaxial coupling element so that the rod receiving channel thereof may be angulated. In each embodiment, the blade portion has a cylindrical recess and the body includes a shaft portion which is slideably mounted therein. The top of the cylindrical recess is slotted, threaded, and tapered to receive a tightening nut. The tightening crush locks the shaft in the recess. In a first embodiment, the upper portion of the body includes a channel in which a rod is a disposed. The rod is locked within the channel by means of a top locking nut or an optional rod securing sleeve. In a second embodiment, the shaft has a semi-spherical head on which a separate coupling element, having a lower and an upper portion, is mounted. The lower portion has a slotted exterior taper and a semi-spherical interior chamber in which the head is initially polyaxially disposed. The upper portion has a channel therein for receiving the rod and a threading for receiving a top locking nut. A locking ring is disposed about the coupling element, at the top thereof, being initially positioned above the bottom of the channel such that the rod seats against the top of the locking ring. As in the first embodiment, a locking nut is provided, along with an optional rod securing sleeve to lock the rod in the recess; the process of doing which causes the locking ring to descend, crush locking the head in the interior chamber.

    Abstract translation: 一种具有可变长度的杆接收体部分的层板钩装置。 所选择的实施例包括多轴耦合元件,使得其杆接收通道可以成角度。 在每个实施例中,叶片部分具有圆柱形凹部,并且主体包括可滑动地安装在其中的轴部。 圆柱形凹槽的顶部是开槽,螺纹和锥形以接收紧固螺母。 紧固压紧将轴锁定在凹槽中。 在第一实施例中,主体的上部包括设置杆的通道。 杆通过顶部锁定螺母或可选的杆固定套被锁定在通道内。 在第二实施例中,轴具有半球形头部,其上安装有具有下部和上部的单独的联接元件。 下部具有开槽的外部锥形和半球形的内部腔室,其中头部最初被多次布置。 上部具有用于容纳杆的通道和用于容纳顶部锁定螺母的螺纹。 锁定环围绕联接元件设置在其顶部处,其初始位于通道的底部之上,使得杆抵靠锁定环的顶部。 如在第一实施例中一样,提供了一个锁定螺母,以及可选的杆固定套筒,以将杆锁定在凹槽中; 这样做的过程导致锁定环下降,将头锁定在内部腔室中。

    Rod securing polyaxial locking screw and coupling element assembly
    48.
    发明授权
    Rod securing polyaxial locking screw and coupling element assembly 失效
    杆固定多轴锁定螺钉和联轴器组件

    公开(公告)号:US5554157A

    公开(公告)日:1996-09-10

    申请号:US502048

    申请日:1995-07-14

    CPC classification number: A61B17/7037 A61B17/7032 A61B17/7034

    Abstract: A polyaxial orthopedic device for use with rod implant apparatus includes a screw having a curvate head and a generally hollow coupling element. The coupling element includes an interior axial passage having an interior surface which is inwardly curvate at the lower portion thereof such that it comprises a socket for polyaxially retaining the curvate head of the screw. The coupling element further includes a pair of vertically oriented opposing channels extending down from the top of the coupling element, which define therebetween a rod receiving locus. The channel further divides the walls of the upper portion into a pair of upwardly extending members, each including an exterior threading disposed on the upper most portion for receiving a locking nut. During implantation of the assembly, the locking nut seats against the top of the rod, which in turn seats on the top of the screw head. Downward translation of the nut causes the rod to be locked between the nut and the screw and the screw to be locked in the socket. A preferred variation of the invention includes tapered upwardly extending members which deflect inward to additionally lock the rod from the sides.

    Abstract translation: 用于杆植入装置的多轴矫形装置包括具有弯曲头部和大致中空的联接元件的螺钉。 联接元件包括具有内表面的内部轴向通道,内表面在其下部处向内弯曲,使得其包括用于多重保持螺钉的头枕头的插座。 联接元件还包括从联接元件的顶部向下延伸的一对垂直定向的相对通道,其在其间限定了杆接收轨迹。 通道还将上部的壁分成一对向上延伸的构件,每个向上延伸的构件包括设置在最上部分上用于接收锁定螺母的外部螺纹。 在植入组件期间,锁定螺母抵靠杆的顶部,其又位于螺钉头的顶部上。 螺母的向下平移导致杆被锁定在螺母和螺钉之间,并且螺钉被锁定在插座中。 本发明的优选变型包括锥形向上延伸的构件,其向内偏转以将杆从侧面另外锁定。

    Spacer device and insertion instrument for use in anterior cervical fixation surgery
    50.
    发明授权
    Spacer device and insertion instrument for use in anterior cervical fixation surgery 有权
    用于前宫颈固定术的间隔装置和插入器械

    公开(公告)号:US08870958B2

    公开(公告)日:2014-10-28

    申请号:US13091324

    申请日:2011-04-21

    Abstract: An intervertebral spacer has curvate upper and lower rough surfaces that stimulate bone growth and is formed from a porous material that facilitates bone growth thereinto. The spacer has a plurality of smooth linear grooves to facilitate insertion of the spacer into an intervertebral space using a spacer insertion tool that has a scissor-style body. Each of the insertion tool's arm's heads has an inner surface having a pair of smoothed linear protrusions that fit within the linear grooves of the spacer when the heads are closed about the spacer. When the spacer is held, spaces are present between the spacer's rough surfaces and the heads' inner surfaces so that when the protrusions are longitudinally slid from the grooves to leave the spacer in the intervertebral spacer, the rough surfaces are not disturbed.

    Abstract translation: 椎间间隔物具有刺激骨生长的弯曲上部和下部粗糙表面,并且由促进骨生长的多孔材料形成。 间隔件具有多个平滑的线性槽,以便于使用具有剪刀式身体的间隔件插入工具将间隔件插入椎间空间。 插入工具的臂头中的每一个具有内表面,当内部表面围绕间隔件关闭时,该内表面具有一对平滑的线性突起,该平坦的线状突起装配在间隔物的线性槽内。 当保持间隔件时,间隔件的粗糙表面和头部内表面之间存在空间,使得当凸起从凹槽纵向滑动以将间隔件留在椎间隔件中时,粗糙表面不受干扰。

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