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Publication numberUS20040158246 A1
Publication typeApplication
Application numberUS 10/693,604
Publication date12 Aug 2004
Filing date27 Oct 2003
Priority date30 Apr 1998
Also published asCA2326240A1, CA2326240C, DE69915464D1, DE69915464T2, EP1075226A1, EP1075226B1, US6652525, US8016864, US20100069968, US20110270311, WO1999056653A1
Publication number10693604, 693604, US 2004/0158246 A1, US 2004/158246 A1, US 20040158246 A1, US 20040158246A1, US 2004158246 A1, US 2004158246A1, US-A1-20040158246, US-A1-2004158246, US2004/0158246A1, US2004/158246A1, US20040158246 A1, US20040158246A1, US2004158246 A1, US2004158246A1
InventorsRichard Assaker, Richard-Laurent Minfelde, Jean-Francois D'Amore
Original AssigneeSofamor S.N.C.
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Anterior implant for the spine
US 20040158246 A1
Abstract
Implant for the cervical spine comprising an anterior plate (1) for maintaining a bone graft, bone anchorage screws (6, 7, 8) for the plate and means (22) for blocking the screws and preventing any migration of the screws, characterized in that the blocking means comprises at least one slide (22) slidably mounted on the plate so as to be applicable on at least one anchorage screw head (15, 16). The slide cooperates with means (33, 34) for retaining the slide on the head of the screw. The slide may be formed by a thin platelet (22 a) which is provided with lateral flanges (25) and is slidable in a complementary cavity (18) provided in the plate (1) while being flush with the surface of the plate (1). The plate (1) includes ramps (26) for retaining the slide (22) on which the flanges (25) are slidable, the slide (22) being slidable to a position in which it at least partly overlaps the heads of the associated screws (6 or 7) and is locked in position by suitable means.
Images(5)
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Claims(12)
What is claimed is:
1. An implant for the spine comprising: an anterior plate for stabilizing the spine and maintaining a bone graft, the plate having a number of openings, a number of bone anchorage screws for correspondingly engaging the openings of the plate, and means for blocking the screws and preventing any migration of the screws, characterized in that the blocking means comprise at least one slide slidably mounted on the plate so as to be capable of partially covering at least on anchorage screw head, and the slide cooperates with means for retaining the slide on the head of the screw.
2. An implant for the spine characterized in that it comprises:
a plate for stabilizing the spine, the plate having a number of openings;
a number of bone anchorage screws each operable to engage a corresponding one of the openings of the plate; and
means for blocking the screws and preventing screw migration, the blocking means including at least one slide slidably mounted on the plate to selectively cover at least a part of at least one of the screws and means for retaining the slide on the at least one of the screws, the slide cooperating with the retaining means.
3. An implant for the spine characterized in that it comprises:
a plate for stabilizing the spine, the plate including a number of openings and defining a cavity adjacent at least one of the openings;
a number of bone anchorage screws each operable to pass through a corresponding one of the openings of the plate to engage the spine; and
a slide slidably mounted in the cavity of the plate, the slide being operable to selectively cover at least a portion of at least one of the screws mounted in the at least one of the openings.
4. The implant according to claim 1 or 2, characterized in that the retaining means comprises a boss on the slide which is clicked into a corresponding recess defined by a bridge of the plate when the slide is in a position for blocking the screws.
5. The implant according to claim 1 or 2, wherein the plate defines a cavity and the slide is mounted within the cavity.
6. The implant according to claim 3, wherein the plate includes a bridge adjacent the slide, and one of the bridge and the slide includes a boss and another of the bridge and the slide includes a recess to correspondingly receive the boss to retain the slide in a screw retaining position.
7. The implant according to claim 5 or 6, characterized in that the slide is formed by a platelet including at least one flange, the cavity includes at least one ramp to engage the at least one flange and retain the platelet on the plate.
8. The implant according to claim 7, characterized in that the platelet is provided with two lateral flanges each adapted to slide along a corresponding one of two ramps, the ramps retaining the platelet in the cavity and being formed on opposite sides of the cavity, the platelet being cambered to allow the platelet to be resiliently inserted in the cavity, and the platelet is dimensioned for at least partially overlapping a pair of screw heads each belonging to a corresponding one of the bone anchorage screws.
9. The implant according to claim 7 or 8, characterized in that the cavity and the platelet are so dimensioned that the surface of the platelet is generally flush with a surface of the plate when the platelet is placed in the cavity.
10. The implant according to any of claims 7-9, characterized in that plate defines another cavity arranged to receive another slide slidably mounted to the plate.
11. The implant according to any of claims 7-10, characterized in that the cavity communicates with a pair of the openings of the plate.
12. The implant according to any of claims 10-11, wherein a central part of the plate defines a central opening and further comprising a selected bone anchorage screw to pass through the central opening, the selected bone anchorage screw including a first thread and a screw head, the first thread being separated from the screw head by a generally smooth part the first thread having a diameter larger than the width of the screw passage opening for preventing the return of the selected bone anchorage screw after the bone anchorage screw is inserted in through the central opening.
Description
    TECHNICAL FIELD
  • [0001]
    The present invention relates to an implant for the spine, and more particularly, but not exclusively relates to an anterior plate for maintaining a bone graft, bone anchorage screws for the plate and means for blocking the screws and preventing any migration of the latter.
  • BACKGROUND
  • [0002]
    Spinal plates may be introduced from the anterior to stabilize the cervical spine and maintain in position or secure a bone graft which fills the spaces left by the extraction of at least one vertebral disc and, possibly, part of a contiguous cervical vertebra.
  • [0003]
    The bone anchorage screws used for fixing this type of plate in position are either unicortical, and therefore short, since they pass through only the anterior cortical of the vertebra, or bicortical, and therefore long, since they extend through the anterior cortical and the posterior cortical. The short unicortical screws utilize a locking element when there is a possibility the screws may back-out. On the other hand, the long bicortical screws, while less likely to unscrew, have other limitations making them less desirable in certain situations.
  • [0004]
    In practice, the locking element employed up to the present time for unicortical screws is an additional screw which is positioned between two bone anchorage screws and whose head overlaps the heads of these two screws. While there are thin cervical plates without a locking element, the addition of an existing locking element to a given plate design typically results in an increase in plate size, such as the plate's thickness. These additions may also result in a greater plate width than is desirable. Thus, the general desire to further decrease the size of surgical implants indicates a need for new plate and/or locking element arrangements.
  • DISCLOSURE OF THE INVENTION
  • [0005]
    Accordingly, one object of the present invention is to provide a unique device for stabilizing a patient's spine.
  • [0006]
    Additionally or alternatively, another object of the invention is to provide an anterior cervical plate provided with antimigration means for the screws arranged in such manner as to avoid increasing the overall size of the plate.
  • [0007]
    One form of the present invention is a unique device for stabilizing a patient's spine. In a further form, a slide is incorporated into a spinal plate that may be operable to serve as a locking element.
  • [0008]
    According to another form of the invention, a plate has means for blocking the bone anchorage screws that comprises at least one slide slidably mounted on the plate so as to be capable of partially covering at least one anchorage screw head, and the slide cooperates with means for retaining it on the head of the screw.
  • [0009]
    In still another form, the slide is formed by a thin platelet provided with at least one flange and slidable in a complementary cavity provided on the surface of the plate, the cavity having a ramp on which the flange can be engaged; the retaining means are formed by a boss on the plate which clicks into an associated recess when the slide is in its position for blocking and locking the screw. The cavity and the platelet may be so dimensioned that the surface of the platelet is flush with that of the plate when it is placed in its cavity. Consequently, for this form, the overall thickness of the anterior plate may not be increased by the slide.
  • [0010]
    Further forms, embodiments, objects, aspects and features of the invention will be apparent from the following description and the accompanying drawings.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0011]
    [0011]FIG. 1 is an elevation view of a cervical spine segment provided with an anterior implant according to the invention for maintaining a bone graft in position.
  • [0012]
    [0012]FIG. 2 is a perspective view, to a larger scale, of the anterior plate of FIG. 1 provided with a slide for locking two of the screws of the plate.
  • [0013]
    [0013]FIG. 3 is a perspective view, similar to FIG. 2, showing the plate provided with two slides and two pairs of bone anchorage screws.
  • [0014]
    [0014]FIG. 4 is a bottom perspective view, to a larger scale, of one of the screw-blocking slides for the anterior plate of FIGS. 1-3.
  • [0015]
    [0015]FIG. 5 is a top view to a larger scale of the anterior plate of FIGS. 1-3 provided with two screw locking slides, one of these slides being in the locking position, while the other is in the withdrawn position before locking.
  • [0016]
    [0016]FIG. 6 is a cross-sectional view taken on line 6-6 of FIG. 5.
  • [0017]
    [0017]FIG. 7 is a partial cross-sectional view taken on line 7-7 of FIG. 3.
  • MODE(S) FOR CARRYING OUT THE INVENTION
  • [0018]
    For the purposes of promoting an understanding of the principles of the invention, reference will now be made to the embodiments illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is intended. Any alterations and further modifications in the illustrated or described embodiments, and any further applications of the principles of the invention as described or illustrated therein being contemplated as would normally occur to one skilled in the art to which the invention relates.
  • [0019]
    Shown in FIG. 1 is a cervical spine segment C2, C3, C4, C5, and between the vertebrae C4 and C5 (more usually C4 and C5) of which a bone graft G (partially visible) is disposed, this graft G being covered by an anterior plate 1 whose function is to stabilize the spine and to maintain this bone graft G in position.
  • [0020]
    Referring additionally to FIG. 2, the plate 1 has an elongate shape with two large concave sides 2, 3 connected to rounded ends 4, 5, these large sides 2, 3 extend from the vertebra C4 to the vertebra C5. The plate 1 is provided adjacent to each of its ends 4, 5 with a pair of bone anchorage screws 6, 7 at C4 and C5 which are unicortical and therefore short, and a central screw 8 which is engaged in an oblong opening 9. Each of the screws 6, 7 extends through a corresponding opening 11, 12 which is of generally circular section but has a spherical wall 13, 14 acting as a bearing surface for the corresponding head 15, 16 of screws 6, 7.
  • [0021]
    Each pair of openings 11 and 12 opens onto a respective cavity 18 provided in the adjacent surface 1 a of the plate 1. Formed in this cavity 18, which in the presently-described embodiment opens onto the opposite faces of the plate 1, is a bridge 19 which defines at one end a part of the circumference of the openings 11, 12 and extends from the latter to the opposite wall 21 of the cavity 18. However, the thickness of each bridge 19 is less than that of the plate 1 so that the surface 19 a of each bridge 19 is situated within the cavity 18 at a distance d from the surface 1 a of the plate 1 (FIG. 2).
  • [0022]
    Each pair of bone anchorage screws 6, and each pair of screws 7, is associated with a slide 22 for locking screws 6, 7 after anchorage in the vertebral bodies C4, C5, respectively; and thereby preventing migration of the screws 6, 7. Referring further to FIGS. 3 and 4, each slide 22 is formed by a thin platelet 22 a whose thickness is at the most about equal to the distance d between the upper surface 1 a of the plate 1 and the surface 19 a of the bridge 19. This platelet 22 a has an elongate shape whose larger dimension l is just equal to the width of the cavity 18 to allow insertion of the platelet 22 a in the latter. Each platelet 22 a, not cambered in the free state, is generally slightly cambered in order to make it possible to insert it into its housing cavity 18. This insertion is carried out by positioning it on the bridge 19 and applying a force such that its opposite sides 23 slidably and resiliently bear against the retaining ramps 26. Retaining ramps 26 are each defined along a corresponding one of the opposite sides 24 of cavity 18.
  • [0023]
    Further, each platelet 22 a is provided with two lateral flanges 25 which project from the sides 23 under the central part of the platelet 22 a. Each of the flanges 25 is adapted to form a shoe 25 a slidable along a respective retaining ramp 26 (FIGS. 2 and 6). The flanges 25 have a width l allowing their insertion in the slots 26 a between the sides 24 of the cavity 18 and the opposing sides 20 of the bridge 19, so that their inner faces 27 are placed in sliding contact with the sides 20 of the bridge 19 (FIG. 6) when the platelet 22 a has been placed in position.
  • [0024]
    The two large sides 28, 29 of each platelet 22 a are concave and the apices 31, 32 of each platelet 22 a are rounded so that the rounded apices 31, 32 of the sides 28 close to the screws 6 or 7 are able to partly overlap the heads 15, 16 of the screws 6, 7 when the platelets 22 a are in position for locking the screws 6, 7 (FIGS. 1, 2, 5, 6). Indeed, the openings 11, 12 and the heads 15, 16 are so arranged that, when the screws 6, 7 have been screwed into the vertebral bodies with possibly an inclination in regard to plate 1, their heads 15, 16 have their surfaces in a position in which they are just flush with the underside of the round apices 31, 32.
  • [0025]
    Referring more specifically to FIGS. 2-6, means are provided for retaining the platelets 22 a in their position for locking the screws 6, 7. In the presently-described embodiment, these means comprise, for each platelet 22 a, a central boss 33 projecting from the lower face 33 a of the platelet 22 a, namely that placed in contact with the surface 19 a of the support bridge 19, and a corresponding recess 34 provided in the central part of the bridge 19. Thus, when the platelet 22 a reaches the position for locking the screws 6, 7; its boss 33 clicks into the recess 34 and maintains the platelet 22 a in this position and prevents it from moving forwardly or rearwardly in its cavity 18.
  • [0026]
    Referring next to FIGS. 2, 3, 5, and 7, the first thread 36 of the central screw 8 (i.e., the thread closest to its head 37, See FIG. 7) is separated from the latter by a smooth part 38. The diameter of this first thread 36 is larger than that of the smooth part 38 and the width e of the oblong opening 9 arranged to receive screw 8 (See FIG. 2). To place the screw 8 in position, it is therefore necessary to force it through the opening 9 and cause the latter to pass beyond the first thread 36. Thereafter, the latter performs the function of means for retaining screw 8 in plate 1.
  • [0027]
    To place the plate 1 and its locking slides 22 in position on the cervical segment such as C4, C5 of FIG. 1, the procedure is the following. Referring generally to FIGS. 1-7, first of all, after the bone graft G has been placed in position in the discal space previously prepared, the surgeon positions the plate 1 equipped with slides 22 and attaches it by means of screws 6 and 7. Afterwards he makes each slide 22 run from the bottom of its housing cavity 18 until flanges 25 come and stop against screws heads 15 and 16. The latter are then partially covered by rounded tops 31, 32 as shown in FIGS. 1, 2, 3, and 5 for at least one of slides 22. When the slides 22 reach this position, in which they partly overlap the heads 15, 16; their respective boss 33 clicks into the respective recess 34 so that each slide 22 is locked in this position in which it locks the associated screws 15, 16 against any migration and therefore against any posterior movement.
  • [0028]
    As can be seen in FIG. 6, the slides 22 do not project above the surface of the plate 1 owing to their small thickness which is at the maximum equal to about d, and to the provision of a suitable cavity 18. Thus the surface 22 b of the slides 22 is generally flush with surface 1 a of the plate 1 whose overall thickness is consequently not increased by the presence of the locking slides 22. The locking platelets 22 a do not impose to increase the width of the plate 1 in respect to its minimum width such that the same results from the chosen gap between the axis of screws 6 and 7.
  • [0029]
    It should be appreciated that the scope of the invention is not intended to be limited to the described embodiments and may encompass variants. For example, boss 33 can be formed on support 19 whilst recess 34 is formed on the platelet 22 a. Thus the means 33, 34 for blocking the slides 22 in their locking position may be replaced by any other like system. Further, in another arrangement, a slide is associated with each screw and has a single flange that is suitably dimensioned for this purpose. Optionally, the plate may be provided with only a single blocking slide 22, the second pair of screws being for example associated with other blocking means, or being absent. Moreover, in further embodiments, the implant according to the invention can be used, not only for the cervical spine, but also for other spine segments, for example thoracic and lumbar, and possibly without any bone grafts. Further, in other embodiments, the screw-locking slide and plate arrangement may be used to reduce undesired migration of one or more screws of a type other than the unicortical variety; and may be used to check undesired migration of other types of fasteners used in addition to or as an alternative to one or more screws.
  • [0030]
    In one alternative embodiment of the present invention, an implant for the spine includes an anterior plate for stabilizing the spine and maintaining a bone graft that has a number of openings, a number of bone anchorage screws for correspondingly engaging the openings of the plate, and means for blocking the screws and preventing any migration of the screws. This implant is further characterized in that the blocking means comprises at least one slide slidably mounted on the plate so as to be capable of partially covering at least one anchorage screw head. This slide cooperates with means for retaining the slide on the head of the screw.
  • [0031]
    In further embodiment, an implant for the spine includes: a plate for stabilizing the spine that has a number of openings; a number of bone anchorage screws each operable to engage a corresponding one of the openings of the plate; and means for blocking the screws and preventing screw migration. The blocking means includes at least one slide slidably mounted on the plate to selectively cover at least a part of at least one of the screws and means for retaining the slide on at least one of the screws.
  • [0032]
    In an additional embodiment, an implant for the spine includes: a plate for stabilizing the spine that comprises a number of openings and defines a cavity adjacent at least one of the openings; a number of bone anchorage screws each operable to pass through a corresponding one of the openings of the plate to engage the spine; and a slide slidably mounted in the cavity of the plate. The slide is operable to selectively cover at least a portion of at least one of the screws mounted in at least one of the openings.
  • [0033]
    While the invention has been illustrated and described in detail in the drawings and foregoing description, the same is to be considered as illustrative and not restrictive in character, it being understood that only the preferred embodiment has been shown and described and that all changes and modifications that come within the spirit of the invention are desired to be protected.
Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2406832 *5 Mar 19453 Sep 1946Hardinge Mervyn GFracture plate
US2443363 *13 Apr 194215 Jun 1948Gilfillan Charles WBone plate
US2486303 *29 Apr 194825 Oct 1949Harry Herschel LeiterSurgical appliance for bone fractures
US3386437 *14 Jan 19664 Jun 1968Richard Mfg CompanyCompression device for use with a bone fracture plate
US3659595 *22 Oct 19692 May 1972Haboush Edward JCompensating plates for bone fractures
US3741205 *14 Jun 197126 Jun 1973N HarrisBone fixation plate
US3842825 *12 Nov 197322 Oct 1974Wagner RHip fixation device
US4102339 *17 Mar 197725 Jul 1978Synthes AgDevices for tensioning surgical appliances
US4119092 *22 Apr 197710 Oct 1978Gil Jose LuisMethods of reduction of bone fractures
US4408601 *6 Apr 198111 Oct 1983Wilh, Wenk AgBone compression plate
US4484570 *22 May 198127 Nov 1984Synthes Ltd.Device comprising an implant and screws for fastening said implant to a bone, and a device for connecting two separated pieces of bone
US4488543 *19 Jan 198318 Dec 1984Tornier S.A. FranceDevice for osteosynthesis of fractures of the extremities of the femur
US4493317 *16 Nov 198115 Jan 1985Synthes Ltd. (U.S.A.)Surgical compression plate and drill guide
US4503848 *25 Mar 198212 Mar 1985Aesculap-Werke AktiengesellschaftOsteosynthesis plate
US4513744 *15 Nov 198230 Apr 1985Synthes AgSurgical compression plate
US4570624 *10 Aug 198318 Feb 1986Henry Ford HospitalUniversal guide for inserting parallel pins
US4794918 *5 May 19863 Jan 1989Dietmar WolterBone plate arrangement
US4907577 *3 Apr 198913 Mar 1990Wu Shing ShengSpinal transpedicle drill jig
US4911153 *4 Feb 198827 Mar 1990Biomet, Inc.Orthopedic surgical instrument
US4957496 *13 Nov 198918 Sep 1990Mecron Medizinische Produkte GmbhSlotted slide plate assembly for osteosynthesis
US4957497 *13 Jul 198918 Sep 1990Thomas HooglandDevice for osteosynthesis
US4959085 *22 Feb 198925 Sep 1990Metallurgie Hoboken-OverpeltProcess and installation for the treatment of a stream of gas containing pyrophoric dust
US5041113 *16 Jul 199020 Aug 1991Lutz BiedermannStabilization member for stabilizing bones
US5041116 *21 May 199020 Aug 1991Wilson James TCompression hip screw system
US5057111 *4 Nov 198715 Oct 1991Park Joon BNon-stress-shielding bone fracture healing device
US5108395 *18 Sep 199028 Apr 1992Societe De Fabrication De Materiel Orthopedique - SofamorImplant for anterior dorsolumbar spinal osteosynthesis, intended for the correction of kyphoses
US5127912 *5 Oct 19907 Jul 1992R. Charles RaySacral implant system
US5127914 *9 Feb 19907 Jul 1992Calderale Pasquale MOsteosynthesis means for the connection of bone fracture segments
US5129899 *27 Mar 199114 Jul 1992Smith & Nephew Richards Inc.Bone fixation apparatus
US5147361 *29 Nov 199015 Sep 1992Asahi Kogaku Kogyo Kabushiki KaishaVertebral connecting plate
US5161142 *11 Jul 19903 Nov 1992Pioneer Electronic CorporationDisk playing apparatus for playing CLV disks
US5180381 *24 Sep 199119 Jan 1993Aust Gilbert MAnterior lumbar/cervical bicortical compression plate
US5261910 *19 Feb 199216 Nov 1993Acromed CorporationApparatus for maintaining spinal elements in a desired spatial relationship
US5300073 *28 Jan 19925 Apr 1994Salut, Ltd.Sacral implant system
US5324290 *24 Sep 199228 Jun 1994Danek Medical, Inc.Anterior thoracolumbar plate
US5364399 *5 Feb 199315 Nov 1994Danek Medical, Inc.Anterior cervical plating system
US5380328 *9 Aug 199310 Jan 1995Timesh, Inc.Composite perforated implant structures
US5397363 *11 Aug 199214 Mar 1995Gelbard; Steven D.Spinal stabilization implant system
US5423826 *29 Oct 199313 Jun 1995Danek Medical, Inc.Anterior cervical plate holder/drill guide and method of use
US5484439 *25 Apr 199416 Jan 1996Alphatec Manufacturing, Inc.Modular femur fixation device
US5486176 *23 Feb 199423 Jan 1996Smith & Nephew Richards, Inc.Angled bone fixation apparatus
US5487743 *15 Feb 199430 Jan 1996Sofamore, S.N.C.Anterior dorso-lumbar spinal osteosynthesis instrumentation for the correction of kyphosis
US5492442 *24 Feb 199420 Feb 1996National Medical Specialty, Inc.Bone screw with improved threads
US5545166 *14 Jul 199413 Aug 1996Advanced Spine Fixation Systems, IncorporatedSpinal segmental reduction derotational fixation system
US5549612 *22 Jun 199427 Aug 1996Codman & Shurtleff, Inc.Osteosynthesis plate system
US5558674 *17 Dec 199324 Sep 1996Smith & Nephew Richards, Inc.Devices and methods for posterior spinal fixation
US5578034 *7 Jun 199526 Nov 1996Danek Medical, Inc.Apparatus for preventing screw backout in a bone plate fixation system
US5601553 *3 Oct 199411 Feb 1997Synthes (U.S.A.)Locking plate and bone screw
US5607426 *23 Feb 19964 Mar 1997Fastenletix, L.L.C.Threaded polyaxial locking screw plate assembly
US5616144 *6 Jun 19951 Apr 1997Codman & Shurtleff, Inc.Osteosynthesis plate system
US5620443 *25 Jan 199515 Apr 1997Danek Medical, Inc.Anterior screw-rod connector
US5676666 *21 Mar 199614 Oct 1997Spinetech, Inc.Cervical spine stabilization system
US5681311 *20 Dec 199528 Oct 1997Smith & Nephew, Inc.Osteosynthesis apparatus
US5735850 *30 Jan 19967 Apr 1998Sulzer Medizinaltechnik AgFastening system for pedicel screws
US5766254 *24 Jul 199616 Jun 1998Gelbard; Steven D.Spinal stabilization implant system
US5797911 *24 Sep 199625 Aug 1998Sdgi Holdings, Inc.Multi-axial bone screw assembly
US5800433 *31 May 19961 Sep 1998Acromed CorporationSpinal column retaining apparatus
US5824088 *13 Feb 199520 Oct 1998Kirsch; AxelCover device for bone voids and method for the manufacture thereof
US5827286 *14 Feb 199727 Oct 1998Incavo; Stephen J.Incrementally adjustable tibial osteotomy fixation device and method
US5851207 *1 Jul 199722 Dec 1998Synthes (U.S.A.)Freely separable surgical drill guide and plate
US5876402 *29 Mar 19962 Mar 1999Errico; Joseph P.Anterior spinal polyaxial locking screw plate assembly having recessed retaining rings
US5904683 *10 Jul 199818 May 1999Sulzer Spine-Tech Inc.Anterior cervical vertebral stabilizing device
US5951558 *17 Sep 199814 Sep 1999Fiz; DanielBone fixation device
US5954722 *29 Jul 199721 Sep 1999Depuy Acromed, Inc.Polyaxial locking plate
US5957927 *24 Feb 199828 Sep 1999Synthes (Usa)Bone fixation device introducer
US5964761 *15 Jul 199712 Oct 1999Kambin; ParvizMethod and instruments for percutaneous arthroscopic disc removal, bone biopsy and fixation of vertebrae
US5973223 *17 Mar 199826 Oct 1999Collux AbImplant for fixing femoral fractures
US5981925 *5 Sep 19959 Nov 1999Parosa; RyszardPower supply for a continuous wave microwave magnetron
US5984761 *15 May 199816 Nov 1999Kalinowski; RaymondToy clapper device and method of manufacture
US5984925 *30 Jul 199716 Nov 1999Cross Medical Products, Inc.Longitudinally adjustable bone plates and method for use thereof
US6017345 *9 May 199725 Jan 2000Spinal Innovations, L.L.C.Spinal fixation plate
US6129730 *10 Feb 199910 Oct 2000Depuy Acromed, Inc.Bi-fed offset pitch bone screw
US6136002 *5 Feb 199924 Oct 2000Industrial Technology Research InstituteAnterior spinal fixation system
US6139550 *11 Feb 199831 Oct 2000Michelson; Gary K.Skeletal plating system
US6152927 *20 Sep 199928 Nov 2000Sdgi Holdings, Inc.Anterior cervical plating system
US6193721 *11 Feb 199827 Feb 2001Gary K. MichelsonMulti-lock anterior cervical plating system
US6224602 *11 Oct 19991 May 2001Interpore Cross InternationalBone stabilization plate with a secured-locking mechanism for cervical fixation
US6235034 *23 Oct 199822 May 2001Robert S. BrayBone plate and bone screw guide mechanism
US6248105 *16 Jun 199719 Jun 2001Synthes (U.S.A.)Device for connecting a longitudinal support with a pedicle screw
US6256089 *16 Dec 19993 Jul 2001Eyetech Vision, Inc.Optical donor tissue cell
US6306136 *27 Jul 199823 Oct 2001Dimso (Distribution Medicales Du Sud-Ouest)Implant, in particular front cervical plate
US6533786 *13 Oct 199918 Mar 2003Sdgi Holdings, Inc.Anterior cervical plating system
US6602256 *10 Oct 20005 Aug 2003Cross Medical Products, Inc.Bone stabilization plate with a secured-locking mechanism for cervical fixation
US6652525 *20 Oct 200025 Nov 2003Sofamor S.N.C.Anterior implant for the spine
US20020120273 *30 Apr 200229 Aug 2002Needham Dusty AnnaAnterior cervical plating system and method
US20040220571 *5 Feb 20044 Nov 2004Richard AssakerBone plate assembly
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US7648508 *30 Nov 200419 Jan 2010Stryker Trauma S.A.Bone plating implants, instruments and methods
US772726617 Jun 20041 Jun 2010Warsaw Orthopedic, Inc.Method and apparatus for retaining screws in a plate
US773638021 Dec 200515 Jun 2010Rhausler, Inc.Cervical plate system
US77669115 Dec 20053 Aug 2010Theken Spine, LlcFixed and variable locking fixation assembly
US77806661 Jun 200524 Aug 2010Theken Spine, LlcFixed and variable locking fixation assembly
US77853271 Jun 200531 Aug 2010Theken Spine, LlcFixed and variable locking fixation assembly
US78750627 Mar 200625 Jan 2011Warsaw Orthopedic, Inc.Methods and devices for retaining bone plate anchors
US801686411 Apr 200713 Sep 2011Warsaw Orthopedic, Inc.Anterior implant for the spine
US816791929 Jun 20091 May 2012Warsaw Orthopedic, Inc.System and method for securing a plate to the spinal column
US81728855 Feb 20048 May 2012Pioneer Surgical Technology, Inc.Bone plate system
US836112627 Aug 200829 Jan 2013Pioneer Surgical Technology, Inc.Bone plate system
US8556944 *31 Jul 200715 Oct 2013Stryker SpineSystem and method for vertebral body plating
US86230193 Jul 20087 Jan 2014Pioneer Surgical Technology, Inc.Bone plate system
US866872319 Jul 201111 Mar 2014Neurostructures, Inc.Anterior cervical plate
US867298411 May 201018 Mar 2014Warsaw Orthopedic, Inc.Method and apparatus for retaining screw in a plate
US89989232 Jun 20097 Apr 2015Spinealign Medical, Inc.Threaded bone filling material plunger
US907871230 Oct 200914 Jul 2015Warsaw Orthopedic, Inc.Preformed drug-eluting device to be affixed to an anterior spinal plate
US910140720 Jan 201411 Aug 2015Howmedica Osteonics Corp.Anterior cervical plate
US91139646 Aug 201425 Aug 2015Howmedica Osteonics Corp.Anterior cervical plate
US91861898 May 201417 Nov 2015Stryker SpineBone screw retaining system
US92655315 Jun 201223 Feb 2016Blackstone Medical, Inc.Orthopedic devices with a locking mechanism
US93703826 Feb 201221 Jun 2016Paradigm Spine, LlcTranslaminar interspinous stabilization system
US938104620 Dec 20135 Jul 2016Pioneer Surgical Technology, Inc.Bone plate system
US941486415 Apr 200916 Aug 2016Warsaw Orthopedic, Inc.Anterior spinal plate with preformed drug-eluting device affixed thereto
US948625020 Feb 20148 Nov 2016Mastros Innovations, LLC.Lateral plate
US962966420 Jan 201425 Apr 2017Neurostructures, Inc.Anterior cervical plate
US965566522 Jan 201323 May 2017Pioneer Surgical Technology, Inc.Bone plate systems
US977565210 Oct 20163 Oct 2017Mastros Innovations, LlcLateral plate
US20040220571 *5 Feb 20044 Nov 2004Richard AssakerBone plate assembly
US20060116679 *30 Nov 20041 Jun 2006Stryker Trauma SaBone plating implants, instruments and methods
US20070067034 *30 Aug 200622 Mar 2007Chirico Paul EImplantable devices and methods for treating micro-architecture deterioration of bone tissue
US20070213728 *7 Mar 200613 Sep 2007Sdgi Holdings, Inc.Methods and devices for retaining bone plate anchors
US20080021470 *3 Aug 200724 Jan 2008Zimmer Spine, Inc.Anterior cervical plate
US20090036933 *31 Jul 20075 Feb 2009Stryker SpineSystem and method for vertebral body plating
US20100069968 *11 Apr 200718 Mar 2010Sofamor S.N.C.Anterior implant for the spine
US20110282389 *17 May 201017 Nov 2011Omni Surgical dba Spine 360Bone fixation plate assembly
WO2011044852A1 *15 Oct 201021 Apr 2011Shanghai Microport Orthopedics Co., LtdLocking device for anterior cervical steel plate
Classifications
U.S. Classification606/296, 606/902
International ClassificationA61B17/58, A61B17/70, A61B17/80
Cooperative ClassificationA61B17/8042, A61B17/7059
European ClassificationA61B17/70K, A61B17/80D4