Búsqueda Imágenes Maps Play YouTube Noticias Gmail Drive Más »
Iniciar sesión
Usuarios de lectores de pantalla: deben hacer clic en este enlace para utilizar el modo de accesibilidad. Este modo tiene las mismas funciones esenciales pero funciona mejor con el lector.

Patentes

  1. Búsqueda avanzada de patentes
Número de publicaciónUS20060015104 A1
Tipo de publicaciónSolicitud
Número de solicitudUS 11/230,431
Fecha de publicación19 Ene 2006
Fecha de presentación20 Sep 2005
Fecha de prioridad7 Jul 2003
También publicado comoCA2548504A1, CA2548504C, EP1691699A1, EP1691699A4, EP1691699B1, US6979334, US20050010219, WO2005060845A1, WO2005060845A8
Número de publicación11230431, 230431, US 2006/0015104 A1, US 2006/015104 A1, US 20060015104 A1, US 20060015104A1, US 2006015104 A1, US 2006015104A1, US-A1-20060015104, US-A1-2006015104, US2006/0015104A1, US2006/015104A1, US20060015104 A1, US20060015104A1, US2006015104 A1, US2006015104A1
InventoresBrian Dalton
Cesionario originalDalton Brian E
Exportar citaBiBTeX, EndNote, RefMan
Enlaces externos: USPTO, Cesión de USPTO, Espacenet
Bone fixation assembly and method of securement
US 20060015104 A1
Resumen
A bone plate is provided for fixation of spaced vertebra. The bone plate has at least one through passage for securing the plate to bone with a bone fixation screw. The threaded shaft of a bone fixation screw is inserted through a bushing located in the through passage of the bone plate and the screw is thereby threadably secured to the underlying bone and the bushing is then compressed inward against the head of the screw with cams that are actuated by rotating the bushing in the through passage whereby the screw is locked relative to the bone plate. The bushing is not only compressed inwardly against the head of the screw but is also compressed downwardly by the cams into a seat to clamp separate elements of the bone plate together.
Imágenes(6)
Previous page
Next page
Reclamaciones(3)
1. A method for securing a bone plate having a through passage to bone, the method comprising the steps of:
inserting a bushing into the through passage;
inserting the shaft of a fastening screw having a head and a threaded shaft through the bushing located in the through passage of the bone plate;
threading the fastening screw into a bone until the screw head is drawn into an interior socket bore in the bushing; and
compressing the bushing inward against the head of the screw with cam means actuated by rotating the bushing in the through passage whereby the screw is locked relative to the bone plate.
2. The method of claim 1 wherein the step of compressing also includes compressing the bushing downwardly into a seat to clamp separate elements of said bone plate together.
3. The method of claim 1 wherein threading of the screw includes rotating the screw clockwise and rotating the bushing includes rotating the bushing counterclockwise.
Descripción
    CROSS-REFERENCE
  • [0001]
    This application is a divisional application of application Ser. No. 10/815,160, filed Mar. 31, 2004 which is a continuation-in-part application of application Ser. No. 10/731,625, filed Dec. 9, 2003 which is a continuation-in-part application of application Ser. No. 10/615,196, filed Jul. 7, 2003 entitled Spinal Stabilization Implant and Method of Application which is incorporated herein by reference in its entirety and for all purposes.
  • FIELD OF THE INVENTION
  • [0002]
    The present invention relates generally to spinal fixation systems. More particularly, the present invention pertains to a spinal plate assembly which includes a mechanism for fixably attaching and locking bone fixation screws to the plate at desired angles and for simultaneously locking otherwise adjustable portions of the plate together.
  • BACKGROUND OF THE INVENTION
  • [0003]
    Spinal surgery on the lumbar and thoracic spines have classically been open operations, meaning that the instrumentation used is placed through an incision that exposes all of the spine to be instrumented, as well as a portion of spine above and below the area to be instrumented due to the need for proper visualization. This extensive exposure disrupts a considerable amount of tissue, particularly the lumbar paraspinal musculature which needs to be stripped off the vertebra bones for exposure. This stripping leads to muscle damage directly caused by either electrical cautery or manual cutting or indirectly by interruption of vascular supply to the muscle due to coagulation or cutting of vessels, and caused also by embarrassment of the vascular supply during the course of surgery due to compression by retractors on the muscle which are required to maintain exposure. In addition, spinal implants can impact upon the facet joints of the spine, particularly the upper most pair of pedicle screws, which can cause pain or dysfunction of the involved joint. This is due in part to the fact that the pedicle screw systems are designed to give stability without being made to respect normal anatomy. In other words, the spine is forced to fit the metal, instead of fitting the metal to the spine.
  • [0004]
    The present day surgical approach therefore has added to patient morbidity due to the extent of the surgical exposure, tissue damage done primarily to the posterior longitudinal musculature of the spine during the exposure, blood loss and risk of infection. Large open operations also tend to be the cause of significant postoperative pain and disability. Accordingly, these issues lead to longer hospital stays, higher postoperative complications, such as phlebitis and pneumonia brought on by immobility, and greater consumption of postoperative medications with their resultant side affects. In addition, the paraspinal muscle tissue damage has been implicated in the genesis of postoperative lumbar mechanical dysfunction and stiffness, leading to postoperative pain syndromes or failed back syndrome. Also, interference by metal implants of the normal function of the rostral facet joints has been implicated in the early degeneration of these joints, as well as pain and disability, all which could lead to other more involved surgeries.
  • [0005]
    It is a principal object of the present invention to provide a system, including the spinal implant and a delivery system for applying the implant which allows for minimally invasive placement of the spinal implant, thereby reducing the undesired aforedescribed disadvantages of the prior art surgical procedures.
  • [0006]
    Another object of the present invention is to provide a bone fixation assembly which provides polyaxial locking of the screws to the plate and simultaneously, as required, locking of otherwise adjustable portions of the bone plate together for use in the spinal stabilization application method disclosed in corresponding U.S. application Ser. No. 10/615,196.
  • SUMMARY OF THE INVENTION
  • [0007]
    The bone fixation assembly of the present invention includes a bone plate having through passages for inserting the threaded shafts of fastening screws to secure the plate to underlying bone. The threaded screw shaft is inserted through a bushing located in the through passage of the bone plate and threadably secured into the underlying bone. The bushing is configured and dimensioned whereby it is compressed against the head of the screw with cams which are actuated by rotating the bushing in the through passage of the plate whereby the screw is locked relative to the bone plate. The bushing may also simultaneously be compressed downwardly into a seat in order to clamp separate elements of an otherwise adjustable bone plate together to securely lock them.
  • [0008]
    The head of the bone fixation screw has substantially frusto-spherical shaped side surfaces and the bushing in which the screw head is received has an interior surface which defines a socket bore that extends through upper and lower surfaces of the bushing and is configured and dimensioned for polyaxial rotation of the screw head therein. Exterior surfaces of the bushing are configured and dimensioned for limited axial rotation within the through passage of the fixation device or bone plate. At least one slot is located in the side wall of the bushing for allowing inward compression of the bushing bore against the screw head. A cam mechanism is disposed between the through passage of the plate and the bushing and is configured and dimensioned for inwardly compressing the bushing upon axial rotation of the bushing in the through passage whereby the bore is compressed against the screw head for locking the screw at a desired attitude relative to the fixation device or plate.
  • [0009]
    The bushing socket bore is provided with a substantially frusto-spherical shape with a central longitudinal axis to provide initial polyaxial rotation of the screw head therein. One slot within the bushing may extend from the upper surface of the bushing on through the lower surface of the bushing whereby the bushing is generally C-shaped and may thereby be more readily inwardly compressed with a cam mechanism.
  • [0010]
    In a preferred configuration the through passage of the fixation device is provided with an inverted frusto-conical seat and the exterior surface of the bushing is provided with a mating inverted frusto-conical base configured and dimensioned for seating in this seat. The seat and base are coaxial with the central axis of the bushing and through passage. The cam mechanism may take on different configurations. For example, the cam mechanism may be a threaded engagement of thread cam ramps or the use of other types of cam ramps. For example, the cam mechanism may be comprised of annularly spaced upwardly extending ramp cams on the upper surface of the bushing and inwardly extending overhangs are provided on the through passage above the upper surface of the cams or bushing and this overhang is provided with downwardly facing cam following surfaces that are configured and dimensioned for engaging the ramp cams on the top of the bushing when the bushing is axially rotated in its seat. This rotation causes the bushing to be driven downwardly into its inverted frusto-conical seat by the ramp cams to thereby inwardly compress the bushing bore against the screw head. The cams and cam followers surfaces may also be provided for ridges to prevent back-out of the cams.
  • [0011]
    The bone fixation assembly of the present invention is intended to be used independently or in supplement to the bone fixation assembly and method of application described in the inventor's related application previously identified. The bone fixation device of this embodiment is adjustable and is provided with a first screw receiving socket element at a distal end of the plate assembly which is configured with a screw shank passage and a screw head seat for attachment to bone with the aid of a bone fixation screw. An elongate arm extends proximally from this first socket element and has an elongate through slot therealong. A second screw receiving socket element is provided and includes the aforedescribed through passage containing the bushing and cam mechanism. This second screw receiving socket element is slidably received over the arm with the socket bore thereof aligned over the slot for receiving the shank of a fixation screw therethrough for attachment to bone. The bushing seat includes portions of the through slot whereby the second socket element is clamped and locked to the arm when the bushing is pressed downwardly into the seat by the cam mechanism.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0012]
    Other objects and advantages appear hereinafter in the following description and claims. The accompanying drawings show, for the purpose of exemplification, without limiting the invention or appended claims, certain practical embodiments of the present invention wherein:
  • [0013]
    FIG. 1 is a plan view of the bone fixation assembly of the present invention without inclusion of the screw head bushings;
  • [0014]
    FIG. 2 is a view in front elevation and in vertical mid cross section of the bone fixation assembly shown in FIG. 1 as seen along section line A-A with inclusion of the screw head bushings;
  • [0015]
    FIG. 3 is a top view of the C-shaped compression bushing utilized in the assembly of FIGS. 1 and 2;
  • [0016]
    FIG. 4 is a view in right side elevation of the bushing shown in FIG. 3;
  • [0017]
    FIG. 5 is a view in front elevation of the bushing shown in FIG. 3;
  • [0018]
    FIG. 6 is a view in left side elevation of the bushing shown in FIG. 3;
  • [0019]
    FIGS. 7, 8, 9 and 10 are sequential schematic representations illustrating the operation of the locking mechanism for the assembly shown in FIG. 1 as seen along a mid cross section;
  • [0020]
    FIG. 11 is a top view of an alternative embodiment of the C-shaped compression bushing to be utilized in the assembly of FIGS. 1 and 2;
  • [0021]
    FIG. 12 is a view in front elevation of the bushing shown in FIG. 11; and
  • [0022]
    FIGS. 13, 14 and 15 are sequential schematic representations illustrating the operation of an alternative embodiment of the locking mechanism for the assembly shown in FIG. 1 as seen along section line B-B and incorporating the bushing shown in FIGS. 11 and 12.
  • DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
  • [0023]
    Referring first to FIGS. 1 and 2, the bone fixation assembly 10 of the present invention is provided for stabilization of the spine and is an improved modification of the implant plate assembly shown and described in the inventor's aforementioned copending application for use in the inventive procedure therein described for minimum invasive surgical implantation of a plate assembly for fixation of the spine. The assembly 10 is comprised of two separate portions, a first portion 11 and a second portion 12 which are adjustably assembled together. The first portion 11 includes a first receiving socket element 13 at the distal end 14 of assembly 10. This first screw receiving socket element 13 is configured with a screw shank through passage 15 for attachment of element 13 to vertebra bone with the aid of a bone fixation screw 23 as seen in FIG. 2. The plan view of FIG. 1 does not include the bone fixation screws and other interior parts which are included in FIG. 2 in order to provide an exposed view of the screw shank through passage interiors of elements 12 and 13.
  • [0024]
    First portion 11 further includes an elongate arm 18 extending proximally from the first socket element 13. Elongate arm 18 is provided with an elongate through slot 20 therealong. The second portion 12 of assembly 10 comprises a second screw receiving socket element which is also configured with a screw shank through passage 22. Second screw receiving socket element 12 is slidably received over arm 18 with its through passage 22 centered over and aligned over slot 20 for receiving the shank 24 of a fixation screw 23 therethrough for attachment to underlying vertebra bone. The bone fixation or fastening screws 23 have threaded shanks or shafts 24 for insertion through the respective through passages 15 and 22 and they also are provided with heads 25 which have substantially frusto-spherical shaped side surfaces.
  • [0025]
    Bushings 30 are provided for each socket element 12 and 13 to receive the respective screw heads 25. These bushings have upper surfaces 31 and lower surfaces 32 and a side wall 33. The detail of these bushings 30 are best illustrated in FIGS. 3, 4, 5 and 6.
  • [0026]
    The side wall 33 of each bushing 30 is provided with an exterior surface 34 which is configured in dimension for axial rotation within the respective through passages 15 and 22 of screw socket receiving elements 12 and 13. The interior surface 35 of bushings 30 defines a socket bore that extends through the upper and lower surfaces 31 and 32 and is configured and dimensioned for polyaxial rotation of screw head 25 therein. Plural slots 36 are provided in the side wall 33 for allowing inward compression of bore 35 against screw head 25. A cam mechanism 37 is disposed between through passages 15 and 22 and bushings 30 and this cam mechanism 37 is configured and dimensioned for inwardly compressing bushing 30 upon axial rotation of each bushing 30 in its respective through passage 15 and 22 whereby the bore 35 of bushing 30 is compressed against its respective screw head 25 received therein for locking the screw 23 at a desired attitude relative to the fixation plate or device 10. The bushing socket bore 35 has a substantially frusto-spherical shape to compliment the screw heads 25 and has its central longitudinal axis perpendicular to upper and lower surfaces 31 and 32. Also, one of the slots 36 in the form of slot 38 for bushing 30 extends fully through side wall 33 from the upper surface 31 through the lower surface 32. This provides a C-shape to bushing 30 and permits greater compression of the bushing.
  • [0027]
    The bottom portion of each through passage 15 and 22 is provided with an inverted frusto-conical seat 39 and the exterior surface 33 of the bushings 30 are provided with a mating inverted frusto-conical base 40 configured and dimensioned for seating respectively in said seats 39. Seat 39 and base 40 are coaxial with the central axis of the bushing bore 35.
  • [0028]
    The cam mechanism 37 includes annularly spaced upwardly extending ramp cams 41 on the upper surface 31 of bushing 30 and inwardly extending overhangs 42 on the through passages 15 and 22 which are positioned above the upper surface 31 of cams 30. Overhangs 42 are provided with downwardly facing cam following surfaces 43 configured and dimensioned for engaging the cam ramps 41 when bushing 30 is axially rotated in either through passage 15 or 22 whereby the bushing 30 is driven downwardly into seat 39 by the ramp cams 41 to thereby inwardly compress bushing bore 35 against a screw head 25.
  • [0029]
    This cam mechanism 37 further includes radially extending ramp cams 44 on the exterior surface 33 of bushing 30 and these additional ramp cams are dimensioned and configured for also compressing socket bore 35 inwardly when bushing 30 is axially rotated in through passage 15 or 22 due to the manner in which the side walls of through passages 15 and 22 are configured. As illustrated in FIGS. 3 through 6, the ramp cams 41 and 44 are provided with ridges to prevent rotary back off of the bushing 30 after it has been secured within respective through passage 15 or 22.
  • [0030]
    The bushing seat 39 for second socket receiving element 12 includes sloped mating portions 50 of through slot 22 for arm 18 whereby second socket receiving element 12 is firmly clamped to arm 18 when bushing 30 is pressed downwardly into through passage 22 onto seat 39 by the cam mechanism 37. Bushing 30 not only securely locks screw head 35 at a desired attitude, but simultaneously also securely locks second screw socket receiving element 12 to arm 18 at the position desired. This locking capability is schematically illustrated step by step in FIGS. 7 through 10. The schematic illustrations are generally intended to show a cross section through the fixation device 10 of FIG. 1 as seen along section line B-B. However, for the purposes of simplification of illustration, the exact orientation of the bushings 30 relative to the device 10 is not identical to that illustrated in FIGS. 1 and 2.
  • [0031]
    FIG. 7 illustrates the ready position as the parts are initially assembled ready for application. The bushing 30 has been inserted into socket receiving element 12. This is accomplished at the manufacturing stage by compressing the C-shaped bushing 30 sufficiently that it will pass through upper passage 51 of element 12. After insertion, bushing 30 is released from compression and the outer edges of upper surface 31 expand radially outward whereby they underlie overhangs 42. This prevents bushing 30 from accidentally dislodging from element 12.
  • [0032]
    Note that in this ready position the upper lip diameter d of bushing 30 is slightly less that the diameter of screw head 25 and that the lower lip diameter d′ is less than the diameter screw head 25. Accordingly, in the second step of the process, screw shank 24 is inserted through the bushing bore 35 and on through passage 22 of element 12 and the head 25 is then forcibly radially expands bushing 30 and the head 25 snaps down into the bushing 30 where it is retained in bushing bore 35, the diameter d′ being too small for forcible passage of the head 25 therethrough. This step is accomplished by screwing threaded shank 24 of screw 23 into underlying vertebra until head 25 snaps downwardly into bushing 30 as illustrated in FIG. 8. To accomplish this, screw 25 is of course rotated clockwise as indicated by the arrow.
  • [0033]
    The next step is then schematically illustrated in FIG. 9 wherein bushing 30 is rotated counterclockwise as indicated by the arrow at the top of FIG. 9. This is accomplished by an outer 8 toothed Phillips' type driver which engages slots 36 and which has a hollow shaft interior whereby it is arranged or coaxially received over a central hex-driver for driving the screws 23. This combination of screwdrivers is not shown but can be easily visualized and permits the surgeon to retain screw head 25 stationary while rotating the bushing 30 counterclockwise.
  • [0034]
    Due to the cam mechanism 37, which provides upwardly protruding cam ramps 41 and radially protruding ramp cams 44, this counterclockwise turn of bushing 30 causes the radially extending ramp cams 44 to compress bushing 30 and corresponding bore 35 inwardly and to thereby firmly engage screw head 25 and continuing counterclockwise turning of bushing 30 also causes bushing 30 to drive downward into seat 39 as further illustrated in FIG. 10 thereby locking screw head 25 in its trajectory relative to fixation device 10 due to the action of ramp cams 41 acting against follower cam surfaces 43 of overhangs 42. This securely locks arm 18 relative to socket receiving element 12 and further securely locks screw 23 at the given attitude to the entire device 10.
  • [0035]
    As is best illustrated in FIG. 2, the follower cams 43 of overhangs 42 may be provided with downwardly extending ramp cams as illustrated to compliment the upwardly extending ramp cams 41 of bushings 30. The follower cam surfaces 41 and also the radially facing cam surfaces 49 of element 12 may be provided with complimentary ridges to prevent rotary back-out of the bushing 30 after it is locked into position.
  • [0036]
    Also, with reference to FIGS. 1 and 2, cam surfaces 49 of receiving element 12 are provided with locking recesses 65. Bushing 30 only requires a one quarter counterclockwise turn to fully compress the bushing against screw head 25. Accordingly, the recesses 65 are provided just past the point of maximum compression for bushing 30. Two of these locking recesses are provided on opposite sides of element 12, one for each radially protruding ramp cam 44. Once bushing 30 has been fully compressed by the quarter counterclockwise turn, the bushing 30 is allowed very slight expansion whereby the corners of radially extending ramp cams 44 snap into the locking recesses 65. This prevents the bushing 30 from turning clockwise and releasing itself and it also provides a mechanical feedback to the surgeon that the bushing 30 is fully locked. The incorporation of locking recesses 65 permits the elimination of the requirement of ridges on the ramp cams 41 and 44. This arrangement also permits the bushing 30 to be turned counterclockwise against maximal torque beyond the quarter turn back to the resting point or starting point of the bushing through another quarter turn which permits release of the bushing 30 and screw head 25. In this manner, the surgeon may elect to adjust the implant even after the bushing 30 has been locked.
  • [0037]
    The through slot 57 and retainer slot 56 on the proximal end 41 of bone fixation device 10 is provided for coupling the device to an insertion gun as described and illustrated in the inventor's aforesaid copending application for minimum invasive surgical application of the device of the present invention. For more information in this regard, one should refer to this document and it is accordingly incorporated herein by reference.
  • [0038]
    An alternative embodiment of the cam mechanism 37 is illustrated in FIGS. 11 through 15. In this embodiment, the C-shaped bushing 30 is again provided with an inverted frustoconical base portion 33 for mating and seating in the inverted frustoconical seat 39 of through passage 15 in socket element 13. However, in this embodiment, the cam mechanism 37 is provided in the form of thread cam ramps by male threads 45 on the inverted frustoconical surface 33 of bushing 30 and mating female threads 46 on the inverted frustoconical mating seat of through passage 15.
  • [0039]
    FIG. 13 illustrates the initial conditions of installation wherein the screw 23 is being inserted into the bore 35 of bushing 30. Bushing 30 is retained in position in socket element 13 by means of overhangs 42 which overhang annular lip 47 of bushing 30, thereby preventing back out of bushing 30.
  • [0040]
    Once screw head 25 is forced downwardly as indicated by the arrow in FIG. 14, the C-shaped bushing 30 is spread and permits head 25 to enter and to be confined by the internal bore 35. The screw head 25 is rotated clockwise by an appropriate screwdriver until the shank portion 24 is fully engaged in underlying bone (not shown).
  • [0041]
    At this point, a special screwdriver is utilized to engage the drive recesses 46 in the top 31 of bushing 30, as is best illustrated in FIG. 11, and bushing 30 is thereby pushed downward and rotated counterclockwise as indicated by the arrow in FIG. 15. This causes the threads 45 and 46 of can mechanism 37 to engage and thereby further compresses C-shaped bushing 30 inwardly and downwardly until the protruding annular lip 47 engages under the annular seat 48, whereby bushing 30 is engaged and prevented from backing out from its threaded engagement. This procedure securely locks the head 25 of screw 23 from further polyaxial rotation within the bore 35 of bushing 30.
Citas de patentes
Patente citada Fecha de presentación Fecha de publicación Solicitante Título
US5607426 *23 Feb 19964 Mar 1997Fastenletix, L.L.C.Threaded polyaxial locking screw plate assembly
US6030389 *10 Jun 199829 Feb 2000Spinal Concepts, Inc.System and method for stabilizing the human spine with a bone plate
US6641583 *29 Mar 20014 Nov 2003Endius IncorporatedApparatus for retaining bone portions in a desired spatial relationship
US7232441 *5 Feb 200319 Jun 2007Cross Medicalproducts, Inc.Occipital plate and rod system
US20040127896 *1 Oct 20031 Jul 2004Alan LombardoBone plate assembly provided with screw locking mechanisms
Citada por
Patente citante Fecha de presentación Fecha de publicación Solicitante Título
US76621755 Abr 200416 Feb 2010Jackson Roger PUpload shank swivel head bone screw spinal implant
US77669153 Ago 2010Jackson Roger PDynamic fixation assemblies with inner core and outer coil-like member
US787506525 Ene 2011Jackson Roger PPolyaxial bone screw with multi-part shank retainer and pressure insert
US79014378 Mar 2011Jackson Roger PDynamic stabilization member with molded connection
US79351373 May 2011Depuy Spine, Inc.Locking bone screw and spinal plate system
US794290913 Ago 200917 May 2011Ortho Innovations, LlcThread-thru polyaxial pedicle screw system
US794291016 May 200717 May 2011Ortho Innovations, LlcPolyaxial bone screw
US794291112 Jun 200917 May 2011Ortho Innovations, LlcPolyaxial bone screw
US794706516 Ene 200924 May 2011Ortho Innovations, LlcLocking polyaxial ball and socket fastener
US795117030 May 200831 May 2011Jackson Roger PDynamic stabilization connecting member with pre-tensioned solid core
US795117331 May 2011Ortho Innovations, LlcPedicle screw implant system
US796785029 Oct 200828 Jun 2011Jackson Roger PPolyaxial bone anchor with helical capture connection, insert and dual locking assembly
US801217719 Jun 20096 Sep 2011Jackson Roger PDynamic stabilization assembly with frusto-conical connection
US802568129 Mar 200727 Sep 2011Theken Spine, LlcDynamic motion spinal stabilization system
US806673929 Nov 2011Jackson Roger PTool system for dynamic spinal implants
US806675029 Nov 2011Warsaw Orthopedic, IncPort structures for non-rigid bone plates
US807560313 Dic 2011Ortho Innovations, LlcLocking polyaxial ball and socket fastener
US809250010 Ene 2012Jackson Roger PDynamic stabilization connecting member with floating core, compression spacer and over-mold
US80925025 Oct 200710 Ene 2012Jackson Roger PPolyaxial bone screw with uploaded threaded shank and method of assembly and use
US810091524 Ene 2012Jackson Roger POrthopedic implant rod reduction tool set and method
US81053681 Ago 200731 Ene 2012Jackson Roger PDynamic stabilization connecting member with slitted core and outer sleeve
US81286675 Oct 20076 Mar 2012Jackson Roger PAnti-splay medical implant closure with multi-surface removal aperture
US813738628 Ago 200320 Mar 2012Jackson Roger PPolyaxial bone screw apparatus
US815281023 Nov 200410 Abr 2012Jackson Roger PSpinal fixation tool set and method
US816294824 Abr 2012Jackson Roger POrthopedic implant rod reduction tool set and method
US819751812 Jun 2012Ortho Innovations, LlcThread-thru polyaxial pedicle screw system
US821624024 Abr 200610 Jul 2012Warsaw OrthopedicCam based reduction instrument
US825739623 May 20084 Sep 2012Jackson Roger PPolyaxial bone screw with shank-retainer inset capture
US82573984 Sep 2012Jackson Roger PPolyaxial bone screw with cam capture
US82574024 Sep 2012Jackson Roger PClosure for rod receiving orthopedic implant having left handed thread removal
US827308925 Sep 2012Jackson Roger PSpinal fixation tool set and method
US827310926 Abr 200425 Sep 2012Jackson Roger PHelical wound mechanically interlocking mating guide and advancement structure
US82826739 Oct 2012Jackson Roger PAnti-splay medical implant closure with multi-surface removal aperture
US82826759 Oct 2012Depuy Spine, Inc.Anti-backout mechanism
US829289213 May 200923 Oct 2012Jackson Roger POrthopedic implant rod reduction tool set and method
US829292617 Ago 200723 Oct 2012Jackson Roger PDynamic stabilization connecting member with elastic core and outer sleeve
US830878213 Nov 2012Jackson Roger PBone anchors with longitudinal connecting member engaging inserts and closures for fixation and optional angulation
US835393215 Ene 2013Jackson Roger PPolyaxial bone anchor assembly with one-piece closure, pressure insert and plastic elongate member
US836113029 Ene 2013Depuy Spine, Inc.Bone screw fixation
US83667451 Jul 20095 Feb 2013Jackson Roger PDynamic stabilization assembly having pre-compressed spacers with differential displacements
US83667535 Feb 2013Jackson Roger PPolyaxial bone screw assembly with fixed retaining structure
US837706719 Feb 2013Roger P. JacksonOrthopedic implant rod reduction tool set and method
US83771009 May 200219 Feb 2013Roger P. JacksonClosure for open-headed medical implant
US837710226 Mar 201019 Feb 2013Roger P. JacksonPolyaxial bone anchor with spline capture connection and lower pressure insert
US839413323 Jul 201012 Mar 2013Roger P. JacksonDynamic fixation assemblies with inner core and outer coil-like member
US839868212 May 201019 Mar 2013Roger P. JacksonPolyaxial bone screw assembly
US844468121 May 2013Roger P. JacksonPolyaxial bone anchor with pop-on shank, friction fit retainer and winged insert
US846034824 Mar 201111 Jun 2013Depuy Spine, Inc.Locking bone screw and spinal plate system
US84655306 May 201118 Jun 2013Ortho Innovations, LlcLocking polyaxial ball and socket fastener
US84754983 Ene 20082 Jul 2013Roger P. JacksonDynamic stabilization connecting member with cord connection
US849669221 Sep 200930 Jul 2013Jmea CorporationLocking securing member
US85065995 Ago 201113 Ago 2013Roger P. JacksonDynamic stabilization assembly with frusto-conical connection
US85407535 Oct 200424 Sep 2013Roger P. JacksonPolyaxial bone screw with uploaded threaded shank and method of assembly and use
US854553826 Abr 20101 Oct 2013M. Samy AbdouDevices and methods for inter-vertebral orthopedic device placement
US85569385 Oct 201015 Oct 2013Roger P. JacksonPolyaxial bone anchor with non-pivotable retainer and pop-on shank, some with friction fit
US859151526 Ago 200926 Nov 2013Roger P. JacksonSpinal fixation tool set and method
US85915522 Ago 201226 Nov 2013Roger P. JacksonAnti-splay medical implant closure with multi-surface removal aperture
US85915602 Ago 201226 Nov 2013Roger P. JacksonDynamic stabilization connecting member with elastic core and outer sleeve
US861376014 Dic 201124 Dic 2013Roger P. JacksonDynamic stabilization connecting member with slitted core and outer sleeve
US863676918 Jun 201228 Ene 2014Roger P. JacksonPolyaxial bone screw with shank-retainer insert capture
US86367843 Nov 200828 Ene 2014Stout Medical Group, LPExpandable attachment device and method
US869671130 Jul 201215 Abr 2014Roger P. JacksonPolyaxial bone anchor assembly with one-piece closure, pressure insert and plastic elongate member
US87840274 May 201122 Jul 2014Enduralock, LlcRatchet locking mechanism for threaded fastener
US881491112 May 201126 Ago 2014Roger P. JacksonPolyaxial bone screw with cam connection and lock and release insert
US88149133 Sep 201326 Ago 2014Roger P JacksonHelical guide and advancement flange with break-off extensions
US8821554 *29 Jun 20102 Sep 2014Amendia, Inc.Method, system, and apparatus for mammalian bony segment stabilization
US884065222 Oct 201223 Sep 2014Roger P. JacksonBone anchors with longitudinal connecting member engaging inserts and closures for fixation and optional angulation
US884564913 May 200930 Sep 2014Roger P. JacksonSpinal fixation tool set and method for rod reduction and fastener insertion
US88768688 Abr 20054 Nov 2014Roger P. JacksonHelical guide and advancement flange with radially loaded lip
US889465728 Nov 201125 Nov 2014Roger P. JacksonTool system for dynamic spinal implants
US890027228 Ene 20132 Dic 2014Roger P JacksonDynamic fixation assemblies with inner core and outer coil-like member
US891147721 Oct 200816 Dic 2014Roger P. JacksonDynamic stabilization member with end plate support and cable core extension
US891147910 Ene 201316 Dic 2014Roger P. JacksonMulti-start closures for open implants
US893662315 Mar 201320 Ene 2015Roger P. JacksonPolyaxial bone screw assembly
US89799047 Sep 201217 Mar 2015Roger P JacksonConnecting member with tensioned cord, low profile rigid sleeve and spacer with torsion control
US897991015 Jul 201417 Mar 2015Verticor, Ltd.Method, system, and apparatus for mammalian bony segment stabilization
US899895919 Oct 20117 Abr 2015Roger P JacksonPolyaxial bone anchors with pop-on shank, fully constrained friction fit retainer and lock and release insert
US905013915 Mar 20139 Jun 2015Roger P. JacksonOrthopedic implant rod reduction tool set and method
US90559782 Oct 201216 Jun 2015Roger P. JacksonOrthopedic implant rod reduction tool set and method
US910140426 Ene 201111 Ago 2015Roger P. JacksonDynamic stabilization connecting member with molded connection
US911967621 Dic 20121 Sep 2015DePuy Synthes Products, Inc.Bone screw fixation
US914444412 May 201129 Sep 2015Roger P JacksonPolyaxial bone anchor with helical capture connection, insert and dual locking assembly
US916806926 Oct 201227 Oct 2015Roger P. JacksonPolyaxial bone anchor with pop-on shank and winged insert with lower skirt for engaging a friction fit retainer
US919869527 Feb 20131 Dic 2015Zimmer Spine, Inc.Polyaxial pedicle screw
US921115023 Sep 201015 Dic 2015Roger P. JacksonSpinal fixation tool set and method
US921603919 Nov 201022 Dic 2015Roger P. JacksonDynamic spinal stabilization assemblies, tool set and method
US92160418 Feb 201222 Dic 2015Roger P. JacksonSpinal connecting members with tensioned cords and rigid sleeves for engaging compression inserts
US922677510 May 20135 Ene 2016DePuy Synthes Products, Inc.Locking bone screw and spinal plate system
US932054514 Ene 201126 Abr 2016Roger P. JacksonPolyaxial bone screw with multi-part shank retainer and pressure insert
US937524221 May 201228 Jun 2016Alexandre WorcelOsteosynthesis device with plate and pins
US20020133159 *9 May 200219 Sep 2002Jackson Roger P.Closure for open-headed medical implant
US20040167526 *20 Feb 200426 Ago 2004Roger P. JacksonClosure for rod receiving orthopedic implant having left handed thread removal
US20040172032 *20 Feb 20042 Sep 2004Jackson Roger P.Anti-splay medical implant closure with multi-surface removal aperture
US20040199164 *26 Abr 20047 Oct 2004Jackson Roger P.Helical wound mechanically interlocking mating guide and advancement structure
US20050182410 *8 Abr 200518 Ago 2005Jackson Roger P.Helical guide and advancement flange with radially loaded lip
US20060009773 *15 Sep 200512 Ene 2006Jackson Roger PHelical interlocking mating guide and advancement structure
US20060111712 *23 Nov 200425 May 2006Jackson Roger PSpinal fixation tool set and method
US20060122604 *8 Dic 20048 Jun 2006Depuy Spine, Inc.Locking bone screw and spinal plate system
US20060241603 *26 Jun 200626 Oct 2006Jackson Roger PPolyaxial bone screw assembly with fixed retaining structure
US20070233094 *29 Mar 20074 Oct 2007Dennis ColleranDynamic motion spinal stabilization system
US20070270860 *1 Ago 200722 Nov 2007Jackson Roger PDynamic stabilization connecting member with slitted core and outer sleeve
US20070270868 *24 Abr 200622 Nov 2007Sdgi Holdings, Inc.Cam based reduction instrument
US20080021477 *18 Jul 200724 Ene 2008Strnad Lee AOrthopedic plate having threaded holes for locking screws or pegs and non-threaded holes for a variable axis locking mechanism
US20080039848 *5 Oct 200714 Feb 2008Jackson Roger PAnti-splay medical implant closure with multi-surface removal aperture
US20080083613 *6 Oct 200610 Abr 2008Nelson OiPort structures for non-rigid bone plates
US20080188898 *1 Abr 20087 Ago 2008Jackson Roger PPolyaxial bone screw with multi-part shank retainer and pressure insert
US20080234761 *23 May 200825 Sep 2008Jackson Roger PPolyaxial bone screw with shank-retainer insert capture
US20080294198 *1 Ago 200827 Nov 2008Jackson Roger PDynamic spinal stabilization assembly with torsion and shear control
US20080300633 *30 May 20084 Dic 2008Jackson Roger PDynamic stabilization connecting member with pre-tensioned solid core
US20090062866 *29 Oct 20085 Mar 2009Jackson Roger PPolyaxial bone anchor with helical capture connection, insert and dual locking assembly
US20090105764 *21 Oct 200823 Abr 2009Jackson Roger PDynamic stabilization member with fin support and solid core extension
US20090105820 *21 Oct 200823 Abr 2009Jackson Roger PDynamic stabilization member with fin support and cable core extension
US20090131992 *3 Nov 200821 May 2009Stout Medical Group, L.P.Expandable attachment device and method
US20090192553 *30 Jul 2009Depuy Spine, Inc.Anti-backout mechanism
US20090259259 *15 Jun 200915 Oct 2009Jackson Roger PHelical wound mechanically interlocking mating guide and advancement structure
US20090281574 *19 Jun 200912 Nov 2009Jackson Roger PDynamic stabilization assembly with frusto-conical connection
US20100010543 *14 Ene 2010Jackson Roger PDynamic stabilization connecting member with floating core, compression spacer and over-mold
US20100016905 *21 Ene 2010Stout Medical Group, L.P.Expandable attachment device and method
US20100030280 *2 Oct 20094 Feb 2010Jackson Roger PUpload shank swivel head bone screw spinal implant
US20100036433 *9 Oct 200911 Feb 2010Jackson Roger PPolyaxial Bone screw assembly with fixed retaining structure
US20100121383 *10 Nov 200813 May 2010Todd StanafordMethod, system, and apparatus for mammalian bony segment stabilization
US20100125302 *16 Ene 200920 May 2010Hammill Sr John ELocking Polyaxial Ball And Socket Fastener
US20100137920 *4 Feb 20103 Jun 2010Hammill Sr John EPedicle screw implant system
US20100211114 *21 Abr 201019 Ago 2010Jackson Roger PPolyaxial bone anchor with shelf capture connection
US20100268281 *21 Oct 2010Abdou M SamyDevices and methods for inter-vertebral orthopedic device placement
US20100312287 *23 Jul 20109 Dic 2010Jackson Roger PDynamic fixation assemblies with inner core and outer coil-like member
US20100318136 *12 May 201016 Dic 2010Jackson Roger PPolyaxial bone screw assembly
US20100331887 *15 Jun 201030 Dic 2010Jackson Roger PLongitudinal connecting member with sleeved tensioned cords
US20110071575 *24 Mar 2011Jmea CorporationLocking Securing Member
US20110098755 *5 Oct 201028 Abr 2011Jackson Roger PPolyaxial bone anchor with non-pivotable retainer and pop-on shank, some with friction fit
US20110106176 *5 May 2011Jackson Roger PPolyaxial bone screw with multi-part shank retainer and pressure insert
US20110172719 *14 Jul 2011Depuy Spine, Inc.Locking Bone Screw and Spinal Plate System
US20110218578 *8 Sep 2011Jackson Roger PPolyaxial bone screw with cam connection and lock and release insert
US20110319893 *29 Dic 2011Todd StanafordMethod, system, and apparatus for mammalian bony segment stabilization
USD73485322 Feb 201321 Jul 2015Nuvasive, Inc.Bone plate
USD75485722 Feb 201326 Abr 2016Nuvasive, Inc.Bone plate
CN103764053A *21 May 201230 Abr 2014亚历山大.伍赛尔Osteosynthesis device with plate and pin
WO2007108734A1 *12 Mar 200727 Sep 2007Sven OlerudArrangement for fastening and fixing a first element against another element
WO2008112308A1 *12 Mar 200818 Sep 2008Stout Medical Group, L.P.Expandable attachment device and method
WO2012168613A1 *21 May 201213 Dic 2012Alexandre WorcelOsteosynthesis device with plate and pins
Clasificaciones
Clasificación de EE.UU.606/70
Clasificación internacionalA61B17/56, A61B17/80, A61B17/58, A61B17/70
Clasificación cooperativaA61B17/8047, A61B17/7059
Clasificación europeaA61B17/70K, A61B17/80D6