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Publication numberUS20040158246 A1
Publication typeApplication
Application numberUS 10/693,604
Publication dateAug 12, 2004
Filing dateOct 27, 2003
Priority dateApr 30, 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 *Mar 5, 1945Sep 3, 1946Hardinge Mervyn GFracture plate
US2443363 *Apr 13, 1942Jun 15, 1948Gilfillan Charles WBone plate
US2486303 *Apr 29, 1948Oct 25, 1949Harry Herschel LeiterSurgical appliance for bone fractures
US3386437 *Jan 14, 1966Jun 4, 1968Richard Mfg CompanyCompression device for use with a bone fracture plate
US3659595 *Oct 22, 1969May 2, 1972Haboush Edward JCompensating plates for bone fractures
US3741205 *Jun 14, 1971Jun 26, 1973N HarrisBone fixation plate
US3842825 *Nov 12, 1973Oct 22, 1974Wagner RHip fixation device
US4102339 *Mar 17, 1977Jul 25, 1978Synthes AgDevices for tensioning surgical appliances
US4119092 *Apr 22, 1977Oct 10, 1978Gil Jose LuisMethods of reduction of bone fractures
US4408601 *Apr 6, 1981Oct 11, 1983Wilh, Wenk AgBone compression plate
US4484570 *May 22, 1981Nov 27, 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 *Jan 19, 1983Dec 18, 1984Tornier S.A. FranceDevice for osteosynthesis of fractures of the extremities of the femur
US4493317 *Nov 16, 1981Jan 15, 1985Synthes Ltd. (U.S.A.)Surgical compression plate and drill guide
US4503848 *Mar 25, 1982Mar 12, 1985Aesculap-Werke AktiengesellschaftOsteosynthesis plate
US4513744 *Nov 15, 1982Apr 30, 1985Synthes AgSurgical compression plate
US4570624 *Aug 10, 1983Feb 18, 1986Henry Ford HospitalUniversal guide for inserting parallel pins
US4794918 *May 5, 1986Jan 3, 1989Dietmar WolterBone plate arrangement
US4907577 *Apr 3, 1989Mar 13, 1990Wu Shing ShengSpinal transpedicle drill jig
US4911153 *Feb 4, 1988Mar 27, 1990Biomet, Inc.Orthopedic surgical instrument
US4957496 *Nov 13, 1989Sep 18, 1990Mecron Medizinische Produkte GmbhSlotted slide plate assembly for osteosynthesis
US4957497 *Jul 13, 1989Sep 18, 1990Thomas HooglandDevice for osteosynthesis
US4959085 *Feb 22, 1989Sep 25, 1990Metallurgie Hoboken-OverpeltProcess and installation for the treatment of a stream of gas containing pyrophoric dust
US5041113 *Jul 16, 1990Aug 20, 1991Lutz BiedermannStabilization member for stabilizing bones
US5041116 *May 21, 1990Aug 20, 1991Wilson James TCompression hip screw system
US5057111 *Nov 4, 1987Oct 15, 1991Park Joon BNon-stress-shielding bone fracture healing device
US5108395 *Sep 18, 1990Apr 28, 1992Societe De Fabrication De Materiel Orthopedique - SofamorImplant for anterior dorsolumbar spinal osteosynthesis, intended for the correction of kyphoses
US5127912 *Oct 5, 1990Jul 7, 1992R. Charles RaySacral implant system
US5127914 *Feb 9, 1990Jul 7, 1992Calderale Pasquale MOsteosynthesis means for the connection of bone fracture segments
US5129899 *Mar 27, 1991Jul 14, 1992Smith & Nephew Richards Inc.Bone fixation apparatus
US5147361 *Nov 29, 1990Sep 15, 1992Asahi Kogaku Kogyo Kabushiki KaishaVertebral connecting plate
US5161142 *Jul 11, 1990Nov 3, 1992Pioneer Electronic CorporationDisk playing apparatus for playing CLV disks
US5180381 *Sep 24, 1991Jan 19, 1993Aust Gilbert MAnterior lumbar/cervical bicortical compression plate
US5261910 *Feb 19, 1992Nov 16, 1993Acromed CorporationApparatus for maintaining spinal elements in a desired spatial relationship
US5300073 *Jan 28, 1992Apr 5, 1994Salut, Ltd.Sacral implant system
US5324290 *Sep 24, 1992Jun 28, 1994Danek Medical, Inc.Anterior thoracolumbar plate
US5364399 *Feb 5, 1993Nov 15, 1994Danek Medical, Inc.Anterior cervical plating system
US5380328 *Aug 9, 1993Jan 10, 1995Timesh, Inc.Composite perforated implant structures
US5397363 *Aug 11, 1992Mar 14, 1995Gelbard; Steven D.Spinal stabilization implant system
US5423826 *Oct 29, 1993Jun 13, 1995Danek Medical, Inc.Anterior cervical plate holder/drill guide and method of use
US5484439 *Apr 25, 1994Jan 16, 1996Alphatec Manufacturing, Inc.Modular femur fixation device
US5486176 *Feb 23, 1994Jan 23, 1996Smith & Nephew Richards, Inc.Angled bone fixation apparatus
US5487743 *Feb 15, 1994Jan 30, 1996Sofamore, S.N.C.Anterior dorso-lumbar spinal osteosynthesis instrumentation for the correction of kyphosis
US5492442 *Feb 24, 1994Feb 20, 1996National Medical Specialty, Inc.Bone screw with improved threads
US5545166 *Jul 14, 1994Aug 13, 1996Advanced Spine Fixation Systems, IncorporatedSpinal segmental reduction derotational fixation system
US5549612 *Jun 22, 1994Aug 27, 1996Codman & Shurtleff, Inc.Osteosynthesis plate system
US5558674 *Dec 17, 1993Sep 24, 1996Smith & Nephew Richards, Inc.Devices and methods for posterior spinal fixation
US5578034 *Jun 7, 1995Nov 26, 1996Danek Medical, Inc.Apparatus for preventing screw backout in a bone plate fixation system
US5601553 *Oct 3, 1994Feb 11, 1997Synthes (U.S.A.)Locking plate and bone screw
US5607426 *Feb 23, 1996Mar 4, 1997Fastenletix, L.L.C.Threaded polyaxial locking screw plate assembly
US5616144 *Jun 6, 1995Apr 1, 1997Codman & Shurtleff, Inc.Osteosynthesis plate system
US5620443 *Jan 25, 1995Apr 15, 1997Danek Medical, Inc.Anterior screw-rod connector
US5676666 *Mar 21, 1996Oct 14, 1997Spinetech, Inc.Cervical spine stabilization system
US5681311 *Dec 20, 1995Oct 28, 1997Smith & Nephew, Inc.Osteosynthesis apparatus
US5735850 *Jan 30, 1996Apr 7, 1998Sulzer Medizinaltechnik AgFastening system for pedicel screws
US5766254 *Jul 24, 1996Jun 16, 1998Gelbard; Steven D.Spinal stabilization implant system
US5797911 *Sep 24, 1996Aug 25, 1998Sdgi Holdings, Inc.Multi-axial bone screw assembly
US5800433 *May 31, 1996Sep 1, 1998Acromed CorporationSpinal column retaining apparatus
US5824088 *Feb 13, 1995Oct 20, 1998Kirsch; AxelCover device for bone voids and method for the manufacture thereof
US5827286 *Feb 14, 1997Oct 27, 1998Incavo; Stephen J.Incrementally adjustable tibial osteotomy fixation device and method
US5851207 *Jul 1, 1997Dec 22, 1998Synthes (U.S.A.)Freely separable surgical drill guide and plate
US5876402 *Mar 29, 1996Mar 2, 1999Errico; Joseph P.Anterior spinal polyaxial locking screw plate assembly having recessed retaining rings
US5904683 *Jul 10, 1998May 18, 1999Sulzer Spine-Tech Inc.Anterior cervical vertebral stabilizing device
US5951558 *Sep 17, 1998Sep 14, 1999Fiz; DanielBone fixation device
US5954722 *Jul 29, 1997Sep 21, 1999Depuy Acromed, Inc.Polyaxial locking plate
US5957927 *Feb 24, 1998Sep 28, 1999Synthes (Usa)Bone fixation device introducer
US5964761 *Jul 15, 1997Oct 12, 1999Kambin; ParvizMethod and instruments for percutaneous arthroscopic disc removal, bone biopsy and fixation of vertebrae
US5973223 *Mar 17, 1998Oct 26, 1999Collux AbImplant for fixing femoral fractures
US5981925 *Sep 5, 1995Nov 9, 1999Parosa; RyszardPower supply for a continuous wave microwave magnetron
US5984761 *May 15, 1998Nov 16, 1999Kalinowski; RaymondToy clapper device and method of manufacture
US5984925 *Jul 30, 1997Nov 16, 1999Cross Medical Products, Inc.Longitudinally adjustable bone plates and method for use thereof
US6017345 *May 9, 1997Jan 25, 2000Spinal Innovations, L.L.C.Spinal fixation plate
US6129730 *Feb 10, 1999Oct 10, 2000Depuy Acromed, Inc.Bi-fed offset pitch bone screw
US6136002 *Feb 5, 1999Oct 24, 2000Industrial Technology Research InstituteAnterior spinal fixation system
US6139550 *Feb 11, 1998Oct 31, 2000Michelson; Gary K.Skeletal plating system
US6152927 *Sep 20, 1999Nov 28, 2000Sdgi Holdings, Inc.Anterior cervical plating system
US6193721 *Feb 11, 1998Feb 27, 2001Gary K. MichelsonMulti-lock anterior cervical plating system
US6224602 *Oct 11, 1999May 1, 2001Interpore Cross InternationalBone stabilization plate with a secured-locking mechanism for cervical fixation
US6235034 *Oct 23, 1998May 22, 2001Robert S. BrayBone plate and bone screw guide mechanism
US6248105 *Jun 16, 1997Jun 19, 2001Synthes (U.S.A.)Device for connecting a longitudinal support with a pedicle screw
US6256089 *Dec 16, 1999Jul 3, 2001Eyetech Vision, Inc.Optical donor tissue cell
US6306136 *Jul 27, 1998Oct 23, 2001Dimso (Distribution Medicales Du Sud-Ouest)Implant, in particular front cervical plate
US6533786 *Oct 13, 1999Mar 18, 2003Sdgi Holdings, Inc.Anterior cervical plating system
US6602256 *Oct 10, 2000Aug 5, 2003Cross Medical Products, Inc.Bone stabilization plate with a secured-locking mechanism for cervical fixation
US6652525 *Oct 20, 2000Nov 25, 2003Sofamor S.N.C.Anterior implant for the spine
US20020120273 *Apr 30, 2002Aug 29, 2002Needham Dusty AnnaAnterior cervical plating system and method
US20040220571 *Feb 5, 2004Nov 4, 2004Richard AssakerBone plate assembly
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US7648508 *Nov 30, 2004Jan 19, 2010Stryker Trauma S.A.Bone plating implants, instruments and methods
US7727266Jun 17, 2004Jun 1, 2010Warsaw Orthopedic, Inc.Method and apparatus for retaining screws in a plate
US7736380Dec 21, 2005Jun 15, 2010Rhausler, Inc.Cervical plate system
US7766911Dec 5, 2005Aug 3, 2010Theken Spine, LlcFixed and variable locking fixation assembly
US7780666Jun 1, 2005Aug 24, 2010Theken Spine, LlcFixed and variable locking fixation assembly
US7785327Jun 1, 2005Aug 31, 2010Theken Spine, LlcFixed and variable locking fixation assembly
US7875062Mar 7, 2006Jan 25, 2011Warsaw Orthopedic, Inc.Methods and devices for retaining bone plate anchors
US8016864Apr 11, 2007Sep 13, 2011Warsaw Orthopedic, Inc.Anterior implant for the spine
US8167919Jun 29, 2009May 1, 2012Warsaw Orthopedic, Inc.System and method for securing a plate to the spinal column
US8172885Feb 5, 2004May 8, 2012Pioneer Surgical Technology, Inc.Bone plate system
US8361126Aug 27, 2008Jan 29, 2013Pioneer Surgical Technology, Inc.Bone plate system
US8556944 *Jul 31, 2007Oct 15, 2013Stryker SpineSystem and method for vertebral body plating
US8623019Jul 3, 2008Jan 7, 2014Pioneer Surgical Technology, Inc.Bone plate system
US8668723Jul 19, 2011Mar 11, 2014Neurostructures, Inc.Anterior cervical plate
US8672984May 11, 2010Mar 18, 2014Warsaw Orthopedic, Inc.Method and apparatus for retaining screw in a plate
US8998923Jun 2, 2009Apr 7, 2015Spinealign Medical, Inc.Threaded bone filling material plunger
US9078712Oct 30, 2009Jul 14, 2015Warsaw Orthopedic, Inc.Preformed drug-eluting device to be affixed to an anterior spinal plate
US9101407Jan 20, 2014Aug 11, 2015Howmedica Osteonics Corp.Anterior cervical plate
US9113964Aug 6, 2014Aug 25, 2015Howmedica Osteonics Corp.Anterior cervical plate
US9186189May 8, 2014Nov 17, 2015Stryker SpineBone screw retaining system
US9265531Jun 5, 2012Feb 23, 2016Blackstone Medical, Inc.Orthopedic devices with a locking mechanism
US9370382Feb 6, 2012Jun 21, 2016Paradigm Spine, LlcTranslaminar interspinous stabilization system
US9381046Dec 20, 2013Jul 5, 2016Pioneer Surgical Technology, Inc.Bone plate system
US9414864Apr 15, 2009Aug 16, 2016Warsaw Orthopedic, Inc.Anterior spinal plate with preformed drug-eluting device affixed thereto
US9486250Feb 20, 2014Nov 8, 2016Mastros Innovations, LLC.Lateral plate
US20040220571 *Feb 5, 2004Nov 4, 2004Richard AssakerBone plate assembly
US20060116679 *Nov 30, 2004Jun 1, 2006Stryker Trauma SaBone plating implants, instruments and methods
US20070067034 *Aug 30, 2006Mar 22, 2007Chirico Paul EImplantable devices and methods for treating micro-architecture deterioration of bone tissue
US20070213728 *Mar 7, 2006Sep 13, 2007Sdgi Holdings, Inc.Methods and devices for retaining bone plate anchors
US20080021470 *Aug 3, 2007Jan 24, 2008Zimmer Spine, Inc.Anterior cervical plate
US20090036933 *Jul 31, 2007Feb 5, 2009Stryker SpineSystem and method for vertebral body plating
US20100069968 *Apr 11, 2007Mar 18, 2010Sofamor S.N.C.Anterior implant for the spine
US20110282389 *May 17, 2010Nov 17, 2011Omni Surgical dba Spine 360Bone fixation plate assembly
WO2011044852A1 *Oct 15, 2010Apr 21, 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