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Número de publicaciónUS20060058788 A1
Tipo de publicaciónSolicitud
Número de solicitudUS 10/928,955
Fecha de publicación16 Mar 2006
Fecha de presentación27 Ago 2004
Fecha de prioridad27 Ago 2004
También publicado comoCA2579023A1, CN101031248A, EP1799135A2, EP1799135A4, EP1799135B1, US8709051, US20100256681, US20140228897, WO2006026242A2, WO2006026242A3
Número de publicación10928955, 928955, US 2006/0058788 A1, US 2006/058788 A1, US 20060058788 A1, US 20060058788A1, US 2006058788 A1, US 2006058788A1, US-A1-20060058788, US-A1-2006058788, US2006/0058788A1, US2006/058788A1, US20060058788 A1, US20060058788A1, US2006058788 A1, US2006058788A1
InventoresMichael Hammer, Alan Lombardo
Cesionario originalHammer Michael A, Alan Lombardo
Exportar citaBiBTeX, EndNote, RefMan
Enlaces externos: USPTO, Cesión de USPTO, Espacenet
Multi-axial connection system
US 20060058788 A1
Resumen
In one embodiment of the present invention a system for connecting a fastener element (e.g., a pedicle screw) relative to a rod for the purposes of vertebral fixation is provided. The system may permit multi-axial movement between the fastener element and the rod. Further, the system may permit the angular relationship between the fastener element and the rod to be held in a desired orientation. For the purposes of describing and claiming the present invention, the term “rod” is intended to refer to any elongated structure. Such an elongated structure may be solid or hollow and may have any desired cross-section (e.g., circular, oval, square, rectangular). Further, for the purposes of describing and claiming the present invention, the term “interference fit” is intended to refer to physical contact between two or more components.
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Reclamaciones(40)
1. A spinal fixation system, comprising:
at least one rod;
at least one screw having a head at a first end, wherein the head of the screw includes at least one deformation element thereon;
at least one body, wherein the body has a first end and a second end, wherein a rod receiving channel is disposed adjacent the first end of the body, wherein a screw head receiving chamber is disposed adjacent the second end of the body, wherein the screw head receiving chamber is tapered towards the second end of the body, and wherein the rod receiving channel and the screw head receiving chamber are operatively connected; and
a compression element which cooperates with the body to push the rod, when the rod is disposed within the rod receiving channel, into contact with at least part of the deformation element of the head of the screw to deform the deformation element while pressing the head of the screw towards the tapered end of the screw head receiving chamber to fix the angular relationship of the screw relative to the rod.
2. The spinal fixation system of claim 1, wherein the angular relationship of the screw relative to the rod is fixed at least in part due to: (a) an interference fit between at least a portion of an outside surface of the head of the screw and at least a portion of an inside surface of the screw head receiving chamber; and (b) an interference fit between at least a portion of an outside surface of the rod and the deformation element.
3. The spinal fixation system of claim 1, further comprising a retention ring sized to fit at least partially around the head of the screw when the head of the screw is disposed within the screw head receiving chamber.
4. The spinal fixation system of claim 3, wherein the angular relationship of the screw relative to the rod is fixed at least in part due to: (a) an interference fit between at least a portion of an outside surface of the head of the screw and at least a portion of an inside surface of the retention ring; (b) an interference fit between at least a portion of an outside surface of the retention ring and at least a portion of an inside surface of the screw head receiving chamber; and (c) an interference fit between at least a portion of an outside surface of the rod and the deformation element.
5. The spinal fixation system of claim 1, wherein the screw is a bone screw.
6. The spinal fixation system of claim 5, wherein the bone screw is configured to be screwed into a pedicle portion of a spine.
7. The spinal fixation system of claim 5, wherein the bone screw is a cannulated bone screw.
8. The spinal fixation system of claim 7, wherein the deformation element substantially surrounds the cannulation in the bone screw.
9. The spinal fixation system of claim 8, wherein the deformation element is a substantially circular ring protruding from the head of the bone screw.
10. The spinal fixation system of claim 1, wherein the deformation element comprises a material which is selected from the group including: (a) a material which is softer than a material from which the rod is formed; (b) a material which is harder than a material from which the rod is formed; and (c) a material which is of essentially the same hardness as a material from which the rod is formed.
11. The spinal fixation system of claim 1, wherein the rod receiving channel and the screw head receiving chamber are operatively connected to allow a tool to be inserted therethrough to apply torque to the screw.
12. The spinal fixation system of claim 11, wherein the head of the screw is at least partially spherical.
13. The spinal fixation system of claim 11, wherein the head of the screw includes at least one torque receiving feature for receiving torque from the tool.
14. The spinal fixation system of claim 13, wherein the torque receiving feature is selected from the group including: (a) at least one indentation; (b) at least one protrusion; and (c) at least one drive face.
15. The spinal fixation system of claim 1, wherein the rod has a substantially circular cross section.
16. The spinal fixation system of claim 1, wherein the compression element has threads which cooperate with complementary threads of the body.
17. The spinal fixation system of claim 16, wherein the compression element has external threads which cooperate with complementary internal threads of the body.
18. A fastener assembly used in connection with fixing a rod relative to a spine of a patient, comprising:
at least one fastener having a head at a first end and a bone connection element at a second end, wherein the head of the fastener includes at least one deformation element thereon and the bone connection element of the fastener is adapted for connection to the spine of the patient;
at least one body, wherein the body has a first end and a second end, wherein a rod receiving channel for receiving the rod is disposed adjacent the first end of the body, wherein a fastener head receiving chamber is disposed adjacent the second end of the body, wherein the fastener head receiving chamber is tapered towards the second end of the body, and wherein the rod receiving channel and the fastener head receiving chamber are operatively connected; and
a compression element which cooperates with the body to push the rod, when the rod is disposed within the rod receiving channel, into contact with at least part of the deformation element of the head of the fastener to deform the deformation element while pressing the head of the fastener towards the tapered end of the fastener head receiving chamber to fix the angular relationship of the fastener relative to the rod.
19. The fastener assembly of claim 18, wherein the angular relationship of the fastener relative to the rod is fixed at least in part due to: (a) an interference fit between at least a portion of an outside surface of the head of the fastener and at least a portion of an inside surface of the fastener head receiving chamber; and (b) an interference fit between at least a portion of an outside surface of the rod and the deformation element.
20. The fastener assembly of claim 18, further comprising a retention ring sized to fit at least partially around the head of the fastener when the head of the fastener is disposed within the fastener head receiving chamber.
21. The fastener assembly of claim 20, wherein the angular relationship of the fastener relative to the rod is fixed at least in part due to: (a) an interference fit between at least a portion of an outside surface of the head of the fastener and at least a portion of an inside surface of the retention ring; (b) an interference fit between at least a portion of an outside surface of the retention ring and at least a portion of an inside surface of the fastener head receiving chamber; and (c) an interference fit between at least a portion of an outside surface of the rod and the deformation element.
22. The fastener assembly of claim 18, wherein the bone connection element of the fastener is selected from the group including: (a) threads; and (b) a hook.
23. The fastener assembly of claim 22, wherein the fastener is configured to be connected to a pedicle portion of the spine.
24. The fastener assembly of claim 23, wherein the fastener is a cannulated bone screw.
25. The fastener assembly of claim 24, wherein the deformation element substantially surrounds the cannulation in the bone screw.
26. The fastener assembly of claim 25, wherein the deformation element is a substantially circular ring protruding from the head of the bone screw.
27. The fastener assembly of claim 18, wherein the deformation element comprises a material which is selected from the group including: (a) a material which is softer than a material from which the rod is formed; (b) a material which is harder than a material from which the rod is formed; and (c) a material which is of essentially the same hardness as a material from which the rod is formed.
28. The fastener assembly of claim 18, wherein the rod receiving channel and the fastener head receiving chamber are operatively connected to allow a tool to be inserted therethrough to apply torque to the fastener.
29. The fastener assembly of claim 28, wherein the head of the fastener is at least partially spherical.
30. The fastener assembly of claim 28, wherein the head of the fastener includes at least one torque receiving feature for receiving torque from the tool.
31. The fastener assembly of claim 30, wherein the torque receiving feature is selected from the group including: (a) at least one indentation; (b) at least one protrusion; and (c) at least one drive face.
32. The fastener assembly of claim 18, wherein the rod has a substantially circular cross section.
33. The fastener assembly of claim 18, wherein the compression element has threads which cooperate with complementary threads of the body.
34. The fastener assembly of claim 33, wherein the compression element has external threads which cooperate with complementary internal threads of the body.
35. A cannulated fastener used in connection with fixing a rod in a body member relative to a spine of a patient, comprising:
a head at a first end and a bone connection element at a second end, wherein the head includes at least one deformation element thereon and the bone connection element is adapted for connection to the spine of the patient;
wherein the deformation element substantially surrounds the cannulation in the fastener; and
wherein the deformation element deforms under pressure applied thereto by the rod.
36. The fastener of claim 35, wherein the bone connection element of the fastener is selected from the group including: (a) threads; and (b) a hook.
37. The fastener of claim 36, wherein the fastener is configured to be connected to a pedicle portion of the spine.
38. The fastener of claim 37, wherein the fastener is a bone screw.
39. The fastener of claim 35, wherein the deformation element is a substantially circular ring protruding from the head of the fastener.
40. The fastener of claim 39, wherein the deformation element comprises a material which is selected from the group including: (a) a material which is softer than a material from which the rod is formed; (b) a material which is harder than a material from which the rod is formed; and (c) a material which is of essentially the same hardness as a material from which the rod is formed.
Descripción
    FIELD OF THE INVENTION
  • [0001]
    In one embodiment of the present invention a system for connecting a fastener element (e.g., a pedicle screw) relative to a rod for the purposes of vertebral fixation is provided. The system may permit multi-axial movement between the fastener element and the rod. Further, the system may permit the angular relationship between the fastener element and the rod to be held in a desired orientation.
  • [0002]
    For the purposes of describing and claiming the present invention, the term “rod” is intended to refer to any elongated structure. Such an elongated structure may be solid or hollow and may have any desired cross-section (e.g., circular, oval, square, rectangular).
  • [0003]
    Further, for the purposes of describing and claiming the present invention, the term “interference fit” is intended to refer to physical contact between two or more components.
  • BACKGROUND OF THE INVENTION
  • [0004]
    Various systems for connecting fastener elements (e.g., pedicle screws) to elongated supports (e.g., rods) for the purposes of vertebral fixation have been proposed. Examples include the systems described in the following U.S. Patents.
  • [0005]
    U.S. Pat. No. 5,466,237 relates to a variable locking stabilizer anchor seat and screw. More particularly, this patent relates to a bone interface anchor provided for use with a stabilizer rod for the internal fixation of a spine. The anchor has a seat which accommodates the stabilizer rod and which receives a bone screw for the fixation of the seat to the bone. A compression member cooperates with the seat external to the stabilizer rod and can be tightened to cause a compressive force on the stabilizer rod. The stabilizer rod bears on a rounded surface of the bone screw so as to cause a mating interface between the seat and the bone screw. Subsequently, the position of the seat relative to the bone screw can be locked.
  • [0006]
    U.S. Pat. No. 5,474,555 relates to a spinal implant system. More particularly, this patent relates to an apparatus for the internal fixation of the spine. The apparatus comprises an assembly having at least two anchors and an elongated stabilizer. The anchors each have means to hold the anchor to the bone, and include receiving means which receive the stabilizer as well as securing means which cooperate with the receiving means by means of the interaction of mating threads to cause the application of compression on the stabilizer into the receiving means.
  • [0007]
    U.S. Pat. No. 5,669,911 relates to a polyaxial pedicle screw. More particularly, this patent relates to a polyaxial orthopedic device for use with rod implant apparatus. The device includes a screw having a curvate head, a locking collar disposed therearound, and a receiving member having a linearly tapered socket in which the screw and the collar are nested. The locking collar is slotted and tapered, and has a semi-spherical interior volume into which the screw head is initially polyaxially held. The receiving member has a transverse channel formed in it for receiving a rod, and an axial bore having a linearly tapered chamber in the bottom portion thereof. The collar is inserted down the bore from the top to seat in the chamber, and the screw is subsequently inserted up through the bottom of the bore and into the collar. The linear taper of the chamber provides a radially inward force on the locking collar when the collar is forced downward therein. This radially inward force causes the locking collar to crush lock against the head of the screw, therein locking the two at the given angulation. It is the placement of the rod in the transverse channel, against the top of the collar, and the subsequent locking down of the rod in the channel which provides the downward force against the locking collar, which in turn locks the screw in its given angulation.
  • [0008]
    U.S. Pat. No. 5,879,350 relates to a multi-axial bone screw assembly. More particularly, this patent relates to a multi-axial bone screw assembly including a bone screw having a partially spherical head. The bone screw head is truncated at an upper surface in which a tool receiving recess is defined. The assembly includes a receiver member including a central bore that defines a tapered recess to receive a contracting collet carrying the head of the bone screw. The bore of the receiver member also defines a channel communicating with the recess and configured to receive a spinal rod therein. A portion of the channel is threaded to receive a set screw above the rod. The assembly also includes a contracting collet disposed between the rod and the head of the bone screw. The collet defines a partially spherical recess to receive the head of the bone screw, and includes deflectable fingers that substantially surround the screw head. As the set screw is tightened into the receiver member, the set screw compresses the rod against the collet, which presses the collet into the tapered recess of the receiver member, thereby deflecting the fingers of the collet against the bone screw head.
  • [0009]
    U.S. Pat. No. 6,063,090 relates to a device for connecting a longitudinal support to a pedicle screw. More particularly, this patent relates to a device used to connect a longitudinal support to a pedicle screw by an accommodating head having a channel to accommodate the longitudinal support, wherein it is possible to freely choose from or mix laterally open, top open or closed accommodating heads. A top open accommodating head facilitates, for example, insertion of the longitudinal support, whereas a lateral opening enables lateral corrections. The pedicle screw and the accommodating head are connected via a conical collet chuck in the accommodating head and by a spherical head on the pedicle screw. The present invention allows engagement of the pedicle screw in the accommodating head after the pedicle screw has been inserted into bone.
  • [0010]
    U.S. Pat. No. 6,582,436 relates to a device for connecting a longitudinal support to a bone anchor. More particularly, this patent relates to a device for connecting a longitudinal support to a bone anchor having a rounded head. The device includes a body defining a chamber for receiving the rounded head of the bone anchor and a first channel for receiving the longitudinal support. Further, a first sleeve is slidable over the body for compressing the chamber, a second sleeve is slidable over the body for biasing the longitudinal support against the first sleeve, and a fastener is operatively associated with the body for biasing the second sleeve toward the first sleeve. The forces exerted on the second sleeve by the fastener are transferred to the first sleeve in a plane perpendicular to the central axis. Preferably, the longitudinal support contacts the first sleeve at first and second contact points or zones and one of the sleeves includes at least one extended portion for contacting the other sleeve at least one additional contact point or zone.
  • [0011]
    U.S. Pat. No. 6,660,004 relates to a multi-axial bone screw assembly. More particularly, this patent relates to a bottom-loading multi-axial bone anchor apparatus. The apparatus includes a receiver member, a crown member, a bone anchor and a retaining member. The receiver member defines an upper opening and a lower opening, which may form part of the same opening, a channel, and a groove. The crown member and bone anchor are loaded into the lower opening of the receiver member, and the retaining member fits around the bone anchor and into the groove in the receiver member. The bone anchor is capable of multi-axial positioning with respect to the receiver member. An elongated member is placed in the channel of the receiver member, contacting the crown member, and a compression member is applied via the upper opening. The compression member presses down on the elongated member, which presses down on the crown member and locks the bone anchor between the crown member and the retaining member.
  • [0012]
    U.S. Pat. No. 6,740,086 relates to a screw and rod fixation assembly and device. More particularly, this patent relates to a screw and rod fixation assembly for fixing a screw and, optionally, a rod. The screw and rod fixation assembly includes a screw, fixing mechanism, a substantially annular ring, rod seating mechanism, and locking mechanism. The present invention also provides for a fixing mechanism for fixing a screw, wherein the fixing mechanism further includes an inner surface wall having a gripping portion and a non-gripping portion. Further, the present invention provides for a substantially annular ring for guiding and providing mechanical and frictional force to a screw head. Additionally, the present invention provides for a rod seating mechanism operatively engaged to the screw head and including at least one flexible portion capable of being compressed against a portion of a rod therein. Finally, the present invention provides for a locking mechanism for engaging the rod and the rod seating mechanism. The locking mechanism includes a deflecting mechanism for deflecting the at least one flexible portion of the rod seating mechanism against and around the rod as the locking mechanism further engages the at least one flexible portion of the rod seating mechanism.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • [0013]
    FIG. 1 shows an exploded perspective view of a fastener assembly according to an embodiment of the present invention;
  • [0014]
    FIG. 2 shows a cross-sectional view of a partially assembled fastener assembly according to the embodiment of FIG. 1 (for clarity, this Fig. does not include the rod or compression member of FIG. 1);
  • [0015]
    FIG. 3 shows an exploded perspective view of a fastener assembly according to another embodiment of the present invention;
  • [0016]
    FIG. 4 shows a cross-sectional view of a partially assembled fastener assembly according to the embodiment of FIG. 3 (for clarity, this Fig. does not include the rod or compression member of FIG. 3).
  • [0017]
    FIG. 5 shows a side view of a fastener assembly according to another embodiment of the present invention;
  • [0018]
    FIG. 6 shows a side view of a fastener assembly according to another embodiment of the present invention; and
  • [0019]
    FIG. 7 shows a side view of a fastener according to an embodiment of the present invention.
  • [0020]
    Among those benefits and improvements that have been disclosed, other objects and advantages of this invention will become apparent from the following description taken in conjunction with the accompanying figures. The figures constitute a part of this specification and include illustrative embodiments of the present invention and illustrate various objects and features thereof.
  • DETAILED DESCRIPTION OF THE INVENTION
  • [0021]
    Detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely illustrative of the invention that may be embodied in various forms. In addition, each of the examples given in connection with the various embodiments of the invention are intended to be illustrative, and not restrictive. Further, the figures are not necessarily to scale, some features may be exaggerated to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention.
  • [0022]
    Referring now to FIGS. 1 and 2, a first embodiment of the present invention is shown. As seen in these Figs., Fastener Assembly 100 may be used in connection with mounting Rod 101 relative to a spine of a patient (of course, one or more such Fastener Assemblies may be used with one or more Rods). More particularly, Fastener Assembly 100 may include Fastener 103 having Head 103A at a first end and Bone Connection Element 103B at a second end (Bone Connection Element 103B may be adapted for attachment on, in and/or to the spine). Further, Head 103A may include at least one Deformation Element 103C thereon.
  • [0023]
    In one example (which example is intended to be illustrative and not restrictive), at least a portion of Head 103A may be spherical. In another example (which example is intended to be illustrative and not restrictive), Fastener 103 may be a bone screw and Bone Connection Element 103B may comprise threads. In another example (which example is intended to be illustrative and not restrictive), Fastener 103 may be a cannulated bone screw (see Cannulation 103D of FIG. 2). In another example (which example is intended to be illustrative and not restrictive), Deformation Element 103C may substantially surround Cannulation 103D (e.g., where Cannulation 103D exits Head 103A). In another example (which example is intended to be illustrative and not restrictive), Deformation Element 103C may be a substantially circular ring protruding from Head 103A. In another example (which example is intended to be illustrative and not restrictive), Deformation Element 103C (and/or any other portion of Fastener 103 (e.g., Head 103A or the entire Fastener 103)) may include a material which is: (a) softer than a material from which Rod 101 is formed; (b) harder than a material from which Rod 101 is formed; or (c) of essentially the same hardness as a material from which Rod 101 is formed (e.g., the same material from which Rod 101 is formed).
  • [0024]
    Still referring to FIGS. 1 and 2, it is seen that Fastener Assembly 100 may include Body 105.
  • [0025]
    Body 105 may have a first end and a second end, wherein Rod Receiving Channel 105A for receiving Rod 101 is disposed adjacent the first end of Body 105 and Fastener Head Receiving Chamber 105B is disposed adjacent the second end of Body 105 (as seen in these Figs., Fastener Head Receiving Chamber 105B may be tapered towards the second end of Body 105 and Rod Receiving Channel 105A and Fastener Head Receiving Chamber 105B may be operatively connected (e.g., a hole in Body 105 may connect Rod Receiving Channel 105A and Fastener Head Receiving Chamber 105B)).
  • [0026]
    Further, Fastener Assembly 100 may include Retention Ring 107. This Retention Ring 107 may be sized to fit at least partially around Head 103A when Head 103A is disposed within Fastener Head Receiving Chamber 105B. In one example (which example is intended to be illustrative and not restrictive), Retention Ring 107 may be, as shown in the Figs., of a “split-ring” design.
  • [0027]
    Further still, Compression Element 109 may cooperate with Body 105 to push Rod 101, when Rod 101 is disposed within Rod Receiving Channel 105A, into contact with at least part of Deformation Element 103C. Such contact between Rod 101 and Deformation Element 103C will deform Deformation Element 103C while pressing Head 103A towards the tapered end (i.e., narrower end) of Fastener Head Receiving Chamber 105B. This action will serve to fix the angular relationship of Fastener 103 relative to Rod 101.
  • [0028]
    More particularly, the angular relationship of Fastener 103 relative to Rod 101 may be fixed at least in part due to: (a) an interference fit (caused by radial compression) between at least a portion of an outside surface of Head 103A and at least a portion of an inside surface of Retention Ring 107; (b) an interference fit (caused by radial compression) between at least a portion of an outside surface of Retention Ring 107 and at least a portion of an inside surface of Fastener Head Receiving Chamber 105B; and/or (c) an interference fit between at least a portion of an outside surface of Rod 101 and Deformation Element 103C.
  • [0029]
    In one example (which example is intended to be illustrative and not restrictive), Compression Element 109 may have threads which cooperate with complementary threads of Body 105. In another example (which example is intended to be illustrative and not restrictive), Compression Element 109 may have external threads which cooperate with complementary internal threads of Body 105 (e.g., Compression Element 109 may be a set screw). In another example (which example is intended to be illustrative and not restrictive), Compression Element 109 may have internal threads which cooperate with complementary external threads of Body 105 (e.g., Compression Element 109 may be a nut). In another example (which example is intended to be illustrative and not restrictive), Compression Element 109 may have one or more indentations, protrusions and/or drive faces for receiving torque from a drive tool (see, e.g., the female hex feature of FIG. 1).
  • [0030]
    Reference will now be made to the elements shown in FIGS. 1 and 2 in connection with the description of an example installation procedure. Such an example installation procedure is applicable to this embodiment of the fastener assembly of the present invention and, of course, is intended to be illustrative and not restrictive.
  • [0031]
    More particularly, a guide wire may first be attached to a pedicle of the spine. The free end of the guide wire may then be passed through Fastener 103 (via Cannulation 103D). Fastener 103 (e.g., a pedicle screw) may then be inserted (e.g., screwed into) the pedicle of the spine. Of note, such a pedicle screw may be self-tapping into a hole bored into the pedicle or the hole bored into the pedicle may be pre-tapped. Of further note, such a pedicle screw may be driven into bone with any desired tool (e.g., a hand or power driver applying torque through Rod Receiving Channel 105A and Fastener Head Receiving Chamber 105B).
  • [0032]
    In one example (which example is intended to be illustrative and not restrictive), such a pedicle screw may be driven into bone with a torque applying tool that engages one or more indentations, protrusions and/or drive faces on Head 103A (see, e.g., the four scallops of Head 103A in FIG. 1).
  • [0033]
    In one example (which example is intended to be illustrative and not restrictive), Fastener 103 may be driven into bone by itself. Next, a body/retention ring assembly (e.g., including Body 105 having Retention Ring 107 already disposed within Fastener Head Receiving Chamber 105B) may be placed (or “snapped”) onto Fastener 103.
  • [0034]
    In this regard, as Body 105 is subsequently pushed onto Head 103A, Retention Ring 107 is pushed against the back wall of Fastener Head Receiving Chamber 105B (see 105C of FIG. 2) and Retention Ring 107 is free to expand outward enabling Head 103A to pass through. Once Head 103A pushes through the bottom of Retention Ring 107, Head 103A remains captured (since Retention Ring 107 would have no room to expand as it was pulled forward by Head 103A towards the tapered (i.e., narrowed) end of Fastener Head Receiving Chamber 105B.
  • [0035]
    Next, Rod 101 may be placed in Rod Receiving Channel 105A (with Rod 101 coming into contact with Deformation Element 103C.
  • [0036]
    Finally, as Compression Element 109 (e.g., a set screw) is threaded into Body 105, Compression Element 109 clamps the components in a set position (that is, Compression Element 109 pushes Rod 101 against Deformation Element 103C (and, depending upon the size and shape of Rod 101, Deformation Element 103C and Head 103A, against a portion of Head 103A)). Of note, during this clamping process Deformation Element 103C is deformed (e.g., to form a surface complementary to the portion of Rod 101 causing the deformation) and the result is improved locking (e.g., of the angular relationship between Rod 101 and Fastener 103). Of further note, it is believed that Deformation Element 103C is particularly useful in enabling secure locking of canulated fasteners, such as cannulated pedicle screws (it is believed that a cannulation (without the use of a deformation element according to the present invention) may tend to compromise the ability to lock the multi-axial adjustability).
  • [0037]
    In another example (which example is intended to be illustrative and not restrictive), rather than driving Fastener 103 into bone by itself and then placing a body/retention ring assembly thereon, Fastener 103 may be captured within body/retention ring assembly as discussed above and then the entire body/retention ring/fastener assembly may be attached to the bone (e.g., by using a driving tool such as a hand or power driver to drive the pedicle screw through the hole provided in Body 105 between Rod Receiving Channel 105A and Fastener Head Receiving Chamber 105B).
  • [0038]
    Referring now to FIGS. 3 and 4, another embodiment of the present invention is shown. This embodiment is similar to the embodiment shown in FIGS. 1 and 2 and, in this regard, the same elements will be identified by the same reference numerals (such similar elements will not be described again in detail). Of note, the main difference between the embodiment of these FIGS. 3 and 4 and the embodiment of FIGS. 1 and 2 is that in this embodiment Fastener Assembly 200 does not utilize Retention Ring 107.
  • [0039]
    More particularly, Fastener Assembly 200 may again be used in connection with mounting Rod 101 relative to a spine of a patient (of course, one or more such Fastener Assemblies may be used with one or more Rods). Further, Fastener Assembly 200 may include Fastener 103 (having Head 103A, Bone Connection Element 103B and at least one Deformation Element 103C).
  • [0040]
    Still referring to FIGS. 3 and 4, it is seen that Fastener Assembly 200 may further include Body 105′ (Body 105′ may have a first end and a second end, wherein Rod Receiving Channel 105A′ for receiving Rod 101 is disposed adjacent the first end of Body 105′ and Fastener Head Receiving Chamber 105B′ is disposed adjacent the second end of Body 105′). As seen in these Figs., Fastener Head Receiving Chamber 105B′ may be tapered towards the second end of Body 105′ and a hole may be disposed through Body 105′ to connect Rod Receiving Channel 105A′ and Fastener Head Receiving Chamber 105B′.
  • [0041]
    Of note, the tapered (i.e., narrow) end of Fastener Head Receiving Chamber 105B′ may be made sufficiently small so as to prohibit Head 103A from passing therethrough (while Rod Receiving Channel 105A′ and the hole in Body 105′connecting Rod Receiving Channel 105A′ to Fastener Head Receiving Chamber 105B′ may be made sufficiently large so as to allow Head 103A to pass therethrough).
  • [0042]
    In this regard, Fastener Assembly 200 may be installed by inserting Fastener 103 through Body 105′ such that Head 103A comes to rest in Fastener Head Receiving Chamber 105B′ (see FIG. 4). Fastener 103 may then be inserted (e.g., into the pedicle of the spine) as discussed above (e.g., a guide wire may be used to guide Fastener 103 and either a self-tapping bone screw may be driven into a hole in the bone or a pre-tapped hole in the bone may be provided).
  • [0043]
    Finally, Compression Element 109 may cooperate with Body 105′ to push Rod 101, when Rod 101 is disposed within Rod Receiving Channel 105A′, into contact with at least part of Deformation Element 103C to deform Deformation Element 103C while pressing Head 103A towards the tapered end (i.e., narrower end) of Fastener Head Receiving Chamber 105B. This action will fix the angular relationship of Fastener 103 relative to Rod 101 (the angular relationship of Fastener 103 relative to Rod 101 may be fixed at least in part due to: (a) an interference fit (caused by radial compression) between at least a portion of an outside surface of Head 103A and at least a portion of an inside surface of Fastener Head Receiving Chamber 105B′; and/or (b) an interference fit between at least a portion of an outside surface of Rod 101 and Deformation Element 103C.
  • [0044]
    Referring now to FIGS. 5 and 6, two other embodiments of a fastener assembly body are shown. In this regard, it is noted that Body 105 of FIGS. 1 and 2 has an upward facing Rod Receiving Channel 105A for receiving Rod 101. Likewise, Body 105′ of FIGS. 3 and 4 has an upward facing Rod Receiving Channel 105A′ for receiving Rod 101. In contrast, it is seen in FIG. 5 that Body 500 includes a sideward facing Rod Receiving Channel 501 for receiving Rod 101 (Rod 101, Fastener 103, Compression Element 109 and Retention Ring 107 are shown in phantom and are essentially the same elements as described in detail above). Further, it is seen in FIG. 6 that Body 600 includes a “tunnel-type” Rod Receiving Channel 601 for receiving Rod 101 (Rod 101, Fastener 103, Compression Element 109 and Retention Ring 107 are shown in phantom and are essentially the same elements as described in detail above). Of note, the embodiments of these FIGS. 5 and 6 may operate as discussed above (e.g., the body may include a tapered chamber for facilitating an interference fit between the components disposed therein).
  • [0045]
    Referring now to FIG. 7, another embodiment of a fastener for use with the present invention is shown. Of note, Fastener 700 is depicted here as a bone screw, although other types of bone attaching mechanisms may, of course, be utilized (e.g., a shaft having a hook on the end). In any case, it is seen that in this embodiment Undercut 701 is provided (Undercut 701 may be formed, for example, by a flattening of the bottom of the head of the bone screw (see 701A) and/or by a narrowing of a portion of the shaft of the bone screw (see 701B)). By using such Undercut 701, Fastener 700 may provide increased clearance in the area where Fastener 700 extends from the body of the fastener assembly (wherein such increased clearance may translate into an increase in a maximum angle that Fastener 700 may obtain in relation to the fastener body and/or the rod.
  • [0046]
    While a number of embodiments of the present invention have been described, it is understood that these embodiments are illustrative only, and not restrictive, and that many modifications may become apparent to those of ordinary skill in the art. For example, the present invention may be placed at any desired level of the spine. Further, the present invention may be used in conjunction with a posterior spinal rod implantation. Further still, the controllable angulation provided by the present invention may be in any desired number of planes. Further still, the rod may be fixed axially and rotationally. Further still, any element described herein may be provided in any desired size (e.g., any element described herein may be provided in any desired custom size or any element described herein may be provided in any desired size selected from a “family” of sizes, such as small, medium, large. To give a more specific example (which example is intended to be illustrative and not restrictive), a bone screw may be provided in a desired thread pitch, thread outer diameter, shaft outer diameter, shaft outer diameter to thread outer diameter ratio and/or length and a body element may be provided in any desired inner diameter, outer diameter and/or length. Further still, the compression element may have a “break-off” feature for separating from the installed portion of the compression element when a desired amount of torque has been applied. Further still, one or more of the components of the fastener assembly may be made from any of the following materials: (a) any biocompatible material (which biocompatible material may be treated to permit bone ingrowth or prohibit bone ingrowth—depending upon the desire of the surgeon); (b) a plastic; (c) a fiber; (d) a polymer; (e) a metal (a pure metal such as titanium and/or an alloy such as Ti—Al—Nb, Ti-6Al-4V, stainless steel); (f) any combination thereof. Further still, use of the guide wire for guiding the fastener via the cannulation may be useful during a minimally invasive procedure, for example. Further still, the bone screw may be adapted for placement in cancellous bone. Further still, rather than a thread, the fastener may employ a hook for attachment to bone. Further still, an outer surface of the head of the fastener, an outer surface of the rod, an outer surface of the retention ring, an inner surface of the retention ring and/or an inner surface of the body (e.g., at any interface area between the aforementioned components) may have one or more features for increasing friction at the interface. For example, any of the aforementioned components may have: a roughened or treated surface (e.g., via sandblasting or knurling), a threaded surface, a grooved surface, a ridged surface, a surface with protrusions, and/or a surface with indentations. Further still, the deformation element may deform in dependence upon: (a) the material utilized for the deformation element; (b) the material utilized for the rod; (c) a geometry of the rod in the area where the rod contacts the deformation element; (d) a geometry of the deformation element; (e) a direction of a load applied to the deformation element by the rod; and/or (f) a magnitude of a load applied to the deformation element by the rod. Further still, a minimum of two fastener assemblies for each rod may be used (e.g., for stabilization purposes). Further still, any steps described herein may be carried out in any desired order.
Citas de patentes
Patente citada Fecha de presentación Fecha de publicación Solicitante Título
US4946458 *28 Feb 19897 Ago 1990Harms JuergenPedicle screw
US5207678 *7 Ene 19924 May 1993PruferPedicle screw and receiver member therefore
US5443467 *18 Feb 199422 Ago 1995Biedermann Motech GmbhBone screw
US5466237 *19 Nov 199314 Nov 1995Cross Medical Products, Inc.Variable locking stabilizer anchor seat and screw
US5474555 *3 Ago 199412 Dic 1995Cross Medical ProductsSpinal implant system
US5496321 *12 Dic 19945 Mar 1996Cross Medical Products, Inc.Rod anchor seat having a sliding interlocking rod connector
US5643261 *8 Mar 19951 Jul 1997Schafer Micomed GmbhOsteosynthesis device
US5647873 *13 Nov 199515 Jul 1997Fastenetix, L.L.C.Bicentric polyaxial locking screw and coupling element
US5669911 *13 Jun 199623 Sep 1997Fastenetix, L.L.C.Polyaxial pedicle screw
US5690630 *23 Dic 199625 Nov 1997Fastenetix, LlcPolyaxial pedicle screw
US5733286 *12 Feb 199731 Mar 1998Third Millennium Engineering, LlcRod securing polyaxial locking screw and coupling element assembly
US5797911 *24 Sep 199625 Ago 1998Sdgi Holdings, Inc.Multi-axial bone screw assembly
US5817094 *23 Ene 19976 Oct 1998Fastenetix, LlcPolyaxial locking screw and coupling element
US5879350 *24 Sep 19969 Mar 1999Sdgi Holdings, Inc.Multi-axial bone screw assembly
US5882350 *2 Ene 199816 Mar 1999Fastenetix, LlcPolyaxial pedicle screw having a threaded and tapered compression locking mechanism
US5885286 *11 Feb 199723 Mar 1999Sdgi Holdings, Inc.Multi-axial bone screw assembly
US5964760 *1 Abr 199712 Oct 1999Spinal InnovationsSpinal implant fixation assembly
US6063090 *12 Dic 199616 May 2000Synthes (U.S.A.)Device for connecting a longitudinal support to a pedicle screw
US6113601 *12 Jun 19985 Sep 2000Bones Consulting, LlcPolyaxial pedicle screw having a loosely coupled locking cap
US6248105 *16 Jun 199719 Jun 2001Synthes (U.S.A.)Device for connecting a longitudinal support with a pedicle screw
US6280442 *1 Sep 199928 Ago 2001Sdgi Holdings, Inc.Multi-axial bone screw assembly
US6382936 *30 Jul 19997 May 2002Robert Bosch GmbhElectric motor and fan wheel combination, and method for producing it
US6383190 *30 Sep 19997 May 2002Parallax Medical, Inc.High pressure applicator
US6436100 *7 Ago 199820 Ago 2002J. Lee BergerCannulated internally threaded bone screw and reduction driver device
US6558387 *27 Abr 20016 May 2003Fastemetix, LlcPorous interbody fusion device having integrated polyaxial locking interference screws
US6565565 *19 Ene 200020 May 2003Howmedica Osteonics Corp.Device for securing spinal rods
US6613050 *4 Nov 19992 Sep 2003Spinal Concepts, Inc.Method and apparatus for spinal fixation
US6641586 *1 Feb 20024 Nov 2003Depuy Acromed, Inc.Closure system for spinal fixation instrumentation
US6660004 *28 Ago 20019 Dic 2003Sdgi Holdings, Inc.Multi-axial bone screw assembly
US6740086 *18 Abr 200225 May 2004Spinal Innovations, LlcScrew and rod fixation assembly and device
US6905500 *4 Feb 200214 Jun 2005U & I CorporationBone fixation apparatus
US6951561 *6 May 20044 Oct 2005Triage Medical, Inc.Spinal stabilization device
US7087057 *27 Jun 20038 Ago 2006Depuy Acromed, Inc.Polyaxial bone screw
US7223268 *27 Nov 200229 May 2007Biedermann Mötech GmbHLocking device for securing a rod-shaped element in a holding element connected to a shank
US7306606 *15 Dic 200411 Dic 2007Orthopaedic Innovations, Inc.Multi-axial bone screw mechanism
US7322981 *28 Ago 200329 Ene 2008Jackson Roger PPolyaxial bone screw with split retainer ring
US7335202 *1 Dic 200326 Feb 2008Biedermann Motech GmbhImplant having a shaft and a hold element connected therewith for connecting with a rod
US20020103487 *27 Abr 20011 Ago 2002Errico Thomas J.Porous interbody fusion device having integrated polyaxial locking interference screws
US20030004512 *28 Ago 20022 Ene 2003Farris Robert A.Posterior fixation system
US20030100896 *27 Nov 200229 May 2003Lutz BiedermannElement with a shank and a holding element connected to it for connecting to a rod
US20030216735 *15 May 200220 Nov 2003Moti AltaracVariable locking spinal screw having a knurled collar
US20040024464 *5 May 20035 Feb 2004Errico Thomas J.Porous interbody fusion device having integrated polyaxial locking interference screws
US20040102781 *29 Nov 200227 May 2004U & I CorporationBone fixation apparatus, method and tool for assembling the same
US20040116929 *9 Dic 200317 Jun 2004Barker B. ThomasMulti-axial bone screw assembly
US20040127906 *18 Jul 20031 Jul 2004Culbert Brad S.Method and apparatus for spinal fixation
US20040138662 *30 Oct 200315 Jul 2004Landry Michael E.Spinal stabilization systems and methods
US20040153068 *5 Feb 20035 Ago 2004Pioneer Laboratories, Inc.Low profile spinal fixation system
US20040193160 *13 Abr 200430 Sep 2004Marc RichelsophScrew and rod fixation asembly and device
US20050033289 *6 May 200410 Feb 2005Christopher WarrenProximal anchors for bone fixation system
US20050131409 *2 Jun 200416 Jun 2005Alan ChervitzLinked bilateral spinal facet implants and methods of use
US20050131537 *2 Jun 200416 Jun 2005Hoy Robert W.Spinal facet joint implant
US20050131538 *2 Jun 200416 Jun 2005Alan ChervitzSpinal facet implants with mating articulating bearing surface and methods of use
US20050131545 *2 Jun 200416 Jun 2005Alan ChervitzSpinal facet implant with spherical implant apposition surface and bone bed and methods of use
US20050203515 *29 Dic 200415 Sep 2005Thomas DohertyBone anchor assemblies
US20050228392 *12 Abr 200413 Oct 2005Keyer Thomas RRod persuader
US20050261687 *18 Abr 200524 Nov 2005Laszlo GaramszegiPedicle screw assembly
US20060015105 *5 Abr 200519 Ene 2006Christopher WarrenProximal anchors for bone fixation system
US20060149241 *15 Dic 20056 Jul 2006Marc RichelsophScrew and rod fixation assembly and device
US20060241599 *1 May 200626 Oct 2006Konieczynski David DPolyaxial Bone Screw
US20060241600 *23 Mar 200626 Oct 2006Ensign Michael DPercutaneous pedicle screw assembly
US20070055235 *5 Feb 20048 Mar 2007Pioneer Laboratories, Inc.Low profile spinal fixation system
US20070055241 *10 Jul 20068 Mar 2007Wilfried MatthisBone anchoring device
US20070093818 *3 Ago 200626 Abr 2007Lutz BiedermannBone anchoring device
US20070093826 *4 Oct 200626 Abr 2007Hawkes David TModular pedicle screw systems and methods of intra-operatively assembling the same
US20070118132 *15 Ene 200724 May 2007Triage Medical, Inc.Method and apparatus for spinal fixation
US20070123868 *15 Ene 200731 May 2007Culbert Brad SMethod and apparatus for spinal fixation
US20070161996 *12 Oct 200612 Jul 2007Lutz BiedermannBone anchoring device
US20070161999 *15 Nov 200612 Jul 2007Lutz BiedermannBone anchoring device
US20070219556 *9 May 200720 Sep 2007Moti AltaracSystem and methods for posterior dynamic stabilization of the spine
US20070225712 *9 May 200727 Sep 2007Moti AltaracSystems and methods for posterior dynamic stabilization of the spine
US20070225713 *9 May 200727 Sep 2007Moti AltaracSystems and methods for posterior dynamic stabilization of the spine
US20070270813 *12 Abr 200622 Nov 2007Laszlo GaramszegiPedicle screw assembly
US20080015579 *27 Abr 200717 Ene 2008Whipple Dale ELarge diameter bone anchor assembly
US20080015580 *27 Abr 200717 Ene 2008Nam ChaoLarge diameter bone anchor assembly
US20080015597 *27 Abr 200717 Ene 2008Whipple Dale ELarge diameter bone anchor assembly
US20080045953 *13 Jul 200721 Feb 2008Laszlo GaramszegiPedicle screw assembly with inclined surface seat
US20080097436 *20 Abr 200724 Abr 2008Culbert Brad SMethod and apparatus for spinal fixation
USRE37665 *30 Ene 200116 Abr 2002Fastenetix, LlcPolyaxial pedicle screw having a threaded and tapered compression locking mechanism
USRE39089 *13 Nov 20012 May 2006Fastenetix, LlcPolyaxial pedicle screw having a threaded and tapered compression locking mechanism
Citada por
Patente citante Fecha de presentación Fecha de publicación Solicitante Título
US744562730 Ene 20064 Nov 2008Alpinespine, LlcPolyaxial pedicle screw assembly
US7572279 *10 Nov 200411 Ago 2009Jackson Roger PPolyaxial bone screw with discontinuous helically wound capture connection
US7625396 *17 Nov 20051 Dic 2009Jackson Roger PPolyaxial bone screw with multi-part shank retainer
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
US779447815 Ene 200714 Sep 2010Innovative Delta Technology, LlcPolyaxial cross connector and methods of use thereof
US787506525 Ene 2011Jackson Roger PPolyaxial bone screw with multi-part shank retainer and pressure insert
US78969023 Ene 20071 Mar 2011Dong Myung JeonMulti-axial double locking bone screw assembly
US79014378 Mar 2011Jackson Roger PDynamic stabilization member with molded connection
US79429001 Ago 200717 May 2011Spartek Medical, Inc.Shaped horizontal rod for dynamic stabilization and motion preservation spinal implantation system and method
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
US79511734 Feb 201031 May 2011Ortho Innovations, LlcPedicle screw implant system
US796397830 May 200821 Jun 2011Spartek Medical, Inc.Method for implanting a deflection rod system and customizing the deflection rod system for a particular patient need for dynamic stabilization and motion preservation spinal implantation system
US796785029 Oct 200828 Jun 2011Jackson Roger PPolyaxial bone anchor with helical capture connection, insert and dual locking assembly
US798524330 May 200826 Jul 2011Spartek Medical, Inc.Deflection rod system with mount for a dynamic stabilization and motion preservation spinal implantation system and method
US799337230 May 20089 Ago 2011Spartek Medical, Inc.Dynamic stabilization and motion preservation spinal implantation system with a shielded deflection rod system and method
US80028001 Ago 200723 Ago 2011Spartek Medical, Inc.Horizontal rod with a mounting platform for a dynamic stabilization and motion preservation spinal implantation system and method
US800280330 May 200823 Ago 2011Spartek Medical, Inc.Deflection rod system for a spine implant including an inner rod and an outer shell and method
US800751824 Sep 200930 Ago 2011Spartek Medical, Inc.Load-sharing component having a deflectable post and method for dynamic stabilization of the spine
US80121751 Ago 20076 Sep 2011Spartek Medical, Inc.Multi-directional deflection profile for a dynamic stabilization and motion preservation spinal implantation system and method
US801217719 Jun 20096 Sep 2011Jackson Roger PDynamic stabilization assembly with frusto-conical connection
US801218124 Sep 20096 Sep 2011Spartek Medical, Inc.Modular in-line deflection rod and bone anchor system and method for dynamic stabilization of the spine
US801686124 Sep 200913 Sep 2011Spartek Medical, Inc.Versatile polyaxial connector assembly and method for dynamic stabilization of the spine
US802139624 Sep 200920 Sep 2011Spartek Medical, Inc.Configurable dynamic spinal rod and method for dynamic stabilization of the spine
US8029539 *19 Dic 20074 Oct 2011X-Spine Systems, Inc.Offset multiaxial or polyaxial screw, system and assembly
US8029545 *7 Feb 20064 Oct 2011Warsaw Orthopedic Inc.Articulating connecting member and anchor systems for spinal stabilization
US804333711 Jun 200725 Oct 2011Spartek Medical, Inc.Implant system and method to treat degenerative disorders of the spine
US804811330 May 20081 Nov 2011Spartek Medical, Inc.Deflection rod system with a non-linear deflection to load characteristic for a dynamic stabilization and motion preservation spinal implantation system and method
US804811524 Sep 20091 Nov 2011Spartek Medical, Inc.Surgical tool and method for implantation of a dynamic bone anchor
US804812130 May 20081 Nov 2011Spartek Medical, Inc.Spine implant with a defelction rod system anchored to a bone anchor and method
US804812230 May 20081 Nov 2011Spartek Medical, Inc.Spine implant with a dual deflection rod system including a deflection limiting sheild associated with a bone screw and method
US804812330 May 20081 Nov 2011Spartek Medical, Inc.Spine implant with a deflection rod system and connecting linkages and method
US804812524 Sep 20091 Nov 2011Spartek Medical, Inc.Versatile offset polyaxial connector and method for dynamic stabilization of the spine
US80481281 Ago 20071 Nov 2011Spartek Medical, Inc.Revision system and method for a dynamic stabilization and motion preservation spinal implantation system and method
US80527211 Ago 20078 Nov 2011Spartek Medical, Inc.Multi-dimensional horizontal rod for a dynamic stabilization and motion preservation spinal implantation system and method
US805272230 May 20088 Nov 2011Spartek Medical, Inc.Dual deflection rod system for a dynamic stabilization and motion preservation spinal implantation system and method
US805751430 May 200815 Nov 2011Spartek Medical, Inc.Deflection rod system dimensioned for deflection to a load characteristic for dynamic stabilization and motion preservation spinal implantation system and method
US805751524 Sep 200915 Nov 2011Spartek Medical, Inc.Load-sharing anchor having a deflectable post and centering spring and method for dynamic stabilization of the spine
US805751724 Sep 200915 Nov 2011Spartek Medical, Inc.Load-sharing component having a deflectable post and centering spring and method for dynamic stabilization of the spine
US806673929 Nov 2011Jackson Roger PTool system for dynamic spinal implants
US80667471 Ago 200729 Nov 2011Spartek Medical, Inc.Implantation method for a dynamic stabilization and motion preservation spinal implantation system and method
US80707741 Ago 20076 Dic 2011Spartek Medical, Inc.Reinforced bone anchor for a dynamic stabilization and motion preservation spinal implantation system and method
US807077530 May 20086 Dic 2011Spartek Medical, Inc.Deflection rod system for a dynamic stabilization and motion preservation spinal implantation system and method
US807077630 May 20086 Dic 2011Spartek Medical, Inc.Deflection rod system for use with a vertebral fusion implant for dynamic stabilization and motion preservation spinal implantation system and method
US80707801 Ago 20076 Dic 2011Spartek Medical, Inc.Bone anchor with a yoke-shaped anchor head for a dynamic stabilization and motion preservation spinal implantation system and method
US80756039 Jul 201013 Dic 2011Ortho Innovations, LlcLocking polyaxial ball and socket fastener
US80800391 Ago 200720 Dic 2011Spartek Medical, Inc.Anchor system for a spine implantation system that can move about three axes
US808377224 Sep 200927 Dic 2011Spartek Medical, Inc.Dynamic spinal rod assembly and method for dynamic stabilization of the spine
US808377524 Sep 200927 Dic 2011Spartek Medical, Inc.Load-sharing bone anchor having a natural center of rotation and method for dynamic stabilization of the spine
US809250015 Sep 200910 Ene 2012Jackson Roger PDynamic stabilization connecting member with floating core, compression spacer and over-mold
US809250124 Sep 200910 Ene 2012Spartek Medical, Inc.Dynamic spinal rod and method for dynamic stabilization of the spine
US80925025 Oct 200710 Ene 2012Jackson Roger PPolyaxial bone screw with uploaded threaded shank and method of assembly and use
US809702424 Sep 200917 Ene 2012Spartek Medical, Inc.Load-sharing bone anchor having a deflectable post and method for stabilization of the spine
US810091524 Ene 2012Jackson Roger POrthopedic implant rod reduction tool set and method
US81053561 Ago 200731 Ene 2012Spartek Medical, Inc.Bone anchor with a curved mounting element for a dynamic stabilization and motion preservation spinal implantation system and method
US810535930 May 200831 Ene 2012Spartek Medical, Inc.Deflection rod system for a dynamic stabilization and motion preservation spinal implantation system and method
US81053681 Ago 200731 Ene 2012Jackson Roger PDynamic stabilization connecting member with slitted core and outer sleeve
US810997030 May 20087 Feb 2012Spartek Medical, Inc.Deflection rod system with a deflection contouring shield for a spine implant and method
US811413030 May 200814 Feb 2012Spartek Medical, Inc.Deflection rod system for spine implant with end connectors and method
US811413424 Sep 200914 Feb 2012Spartek Medical, Inc.Spinal prosthesis having a three bar linkage for motion preservation and dynamic stabilization of the spine
US81188421 Ago 200721 Feb 2012Spartek Medical, Inc.Multi-level dynamic stabilization and motion preservation spinal implantation system and method
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
US81424801 Ago 200727 Mar 2012Spartek Medical, Inc.Dynamic stabilization and motion preservation spinal implantation system with horizontal deflection rod and articulating vertical rods
US81475201 Ago 20073 Abr 2012Spartek Medical, Inc.Horizontally loaded dynamic stabilization and motion preservation spinal implantation system and method
US815281023 Nov 200410 Abr 2012Jackson Roger PSpinal fixation tool set and method
US816294824 Abr 2012Jackson Roger POrthopedic implant rod reduction tool set and method
US81629871 Ago 200724 Abr 2012Spartek Medical, Inc.Modular spine treatment kit for dynamic stabilization and motion preservation of the spine
US816791016 Oct 20061 May 2012Innovative Delta Technology LlcBone screw and associated assembly and methods of use thereof
US81728811 Ago 20078 May 2012Spartek Medical, Inc.Dynamic stabilization and motion preservation spinal implantation system and method with a deflection rod mounted in close proximity to a mounting rod
US817288211 Jun 20078 May 2012Spartek Medical, Inc.Implant system and method to treat degenerative disorders of the spine
US81778151 Ago 200715 May 2012Spartek Medical, Inc.Super-elastic deflection rod for a dynamic stabilization and motion preservation spinal implantation system and method
US81825151 Ago 200722 May 2012Spartek Medical, Inc.Dynamic stabilization and motion preservation spinal implantation system and method
US81825161 Ago 200722 May 2012Spartek Medical, Inc.Rod capture mechanism for dynamic stabilization and motion preservation spinal implantation system and method
US81924691 Ago 20075 Jun 2012Spartek Medical, Inc.Dynamic stabilization and motion preservation spinal implantation system and method with a deflection rod
US81975178 May 200812 Jun 2012Theken Spine, LlcFrictional polyaxial screw assembly
US819751828 Jul 201012 Jun 2012Ortho Innovations, LlcThread-thru polyaxial pedicle screw system
US82111501 Ago 20073 Jul 2012Spartek Medical, Inc.Dynamic stabilization and motion preservation spinal implantation system and method
US821115524 Sep 20093 Jul 2012Spartek Medical, Inc.Load-sharing bone anchor having a durable compliant member and method for dynamic stabilization of the spine
US82162812 Dic 200910 Jul 2012Spartek Medical, Inc.Low profile spinal prosthesis incorporating a bone anchor having a deflectable post and a compound spinal rod
US825739623 May 20084 Sep 2012Jackson Roger PPolyaxial bone screw with shank-retainer inset capture
US82573972 Dic 20104 Sep 2012Spartek Medical, Inc.Low profile spinal prosthesis incorporating a bone anchor having a deflectable post and a compound spinal rod
US825739816 Ene 20084 Sep 2012Jackson Roger PPolyaxial bone screw with cam capture
US825740220 Feb 20044 Sep 2012Jackson Roger PClosure for rod receiving orthopedic implant having left handed thread removal
US826797924 Sep 200918 Sep 2012Spartek Medical, Inc.Load-sharing bone anchor having a deflectable post and axial spring and method for dynamic stabilization of the spine
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
US828267320 Feb 20049 Oct 2012Jackson Roger PAnti-splay medical implant closure with multi-surface removal aperture
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
US829826730 May 200830 Oct 2012Spartek Medical, Inc.Spine implant with a deflection rod system including a deflection limiting shield associated with a bone screw and method
US83087823 Ago 201013 Nov 2012Jackson Roger PBone anchors with longitudinal connecting member engaging inserts and closures for fixation and optional angulation
US831783610 Nov 200927 Nov 2012Spartek Medical, Inc.Bone anchor for receiving a rod for stabilization and motion preservation spinal implantation system and method
US833379224 Sep 200918 Dic 2012Spartek Medical, Inc.Load-sharing bone anchor having a deflectable post and method for dynamic stabilization of the spine
US833753624 Sep 200925 Dic 2012Spartek Medical, Inc.Load-sharing bone anchor having a deflectable post with a compliant ring and method for stabilization of the spine
US835393220 Ago 200815 Ene 2013Jackson Roger PPolyaxial bone anchor assembly with one-piece closure, pressure insert and plastic elongate member
US83667451 Jul 20095 Feb 2013Jackson Roger PDynamic stabilization assembly having pre-compressed spacers with differential displacements
US836675326 Jun 20065 Feb 2013Jackson Roger PPolyaxial bone screw assembly with fixed retaining structure
US837212229 Abr 201112 Feb 2013Spartek Medical, Inc.Low profile spinal prosthesis incorporating a bone anchor having a deflectable post and a compound spinal rod
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
US839412727 Jun 201212 Mar 2013Spartek Medical, Inc.Low profile spinal prosthesis incorporating a bone anchor having a deflectable post and a compound spinal rod
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
US84309167 Feb 201230 Abr 2013Spartek Medical, Inc.Spinal rod connectors, methods of use, and spinal prosthesis incorporating spinal rod connectors
US844468113 Abr 201221 May 2013Roger P. JacksonPolyaxial bone anchor with pop-on shank, friction fit retainer and winged insert
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
US848071422 Ago 20119 Jul 2013X-Spine Systems, Inc.Offset multiaxial or polyaxial screw, system and assembly
US85065995 Ago 201113 Ago 2013Roger P. JacksonDynamic stabilization assembly with frusto-conical connection
US851808527 Ene 201127 Ago 2013Spartek Medical, Inc.Adaptive spinal rod and methods for stabilization of the spine
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
US856845110 Nov 200929 Oct 2013Spartek Medical, Inc.Bone anchor for receiving a rod for stabilization and motion preservation spinal implantation system and method
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
US863677723 Jul 200928 Ene 2014Roger P. JacksonPolyaxial bone screw with discontinuous helically wound capture connection
US869671130 Jul 201215 Abr 2014Roger P. JacksonPolyaxial bone anchor assembly with one-piece closure, pressure insert and plastic elongate member
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
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
US885223917 Feb 20147 Oct 2014Roger P JacksonSagittal angle screw with integral shank and receiver
US887092829 Abr 201328 Oct 2014Roger P. JacksonHelical guide and advancement flange with radially loaded lip
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
US891147821 Nov 201316 Dic 2014Roger P. JacksonSplay control closure for open bone anchor
US891147910 Ene 201316 Dic 2014Roger P. JacksonMulti-start closures for open implants
US892667015 Mar 20136 Ene 2015Roger P. JacksonPolyaxial bone screw assembly
US892667221 Nov 20136 Ene 2015Roger P. JacksonSplay control closure for open bone anchor
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
US899895919 Oct 20117 Abr 2015Roger P JacksonPolyaxial bone anchors with pop-on shank, fully constrained friction fit retainer and lock and release insert
US899896017 May 20137 Abr 2015Roger P. JacksonPolyaxial bone screw with helically wound capture connection
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
US908463411 Jul 201121 Jul 2015Theken Spine, LlcUniplanar screw
US910140426 Ene 201111 Ago 2015Roger P. JacksonDynamic stabilization connecting member with molded connection
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
US91986915 Jul 20131 Dic 2015X-Spine Systems, Inc.Offset multiaxial or polyaxial screw, system and assembly
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
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
US20050182410 *8 Abr 200518 Ago 2005Jackson Roger P.Helical guide and advancement flange with radially loaded lip
US20060084979 *5 Oct 200420 Abr 2006Jackson Roger PPolyaxial bone screw with uploaded threaded shank and method of assembly and use
US20060100621 *10 Nov 200411 May 2006Jackson Roger PPolyaxial bone screw with discontinuous helically wound capture connection
US20060149240 *17 Nov 20056 Jul 2006Jackson Roger PPolyaxial bone screw with multi-part shank retainer
US20060173456 *30 Ene 20063 Ago 2006Hawkes David TPolyaxial pedicle screw assembly
US20060229607 *16 Mar 200512 Oct 2006Sdgi Holdings, Inc.Systems, kits and methods for treatment of the spinal column using elongate support members
US20070123870 *18 Dic 200631 May 2007Jeon Dong MBi-polar screw assembly
US20070198014 *7 Feb 200623 Ago 2007Sdgi Holdings, Inc.Articulating connecting member and anchor systems for spinal stabilization
US20080039848 *5 Oct 200714 Feb 2008Jackson Roger PAnti-splay medical implant closure with multi-surface removal aperture
US20080091213 *6 Dic 200717 Abr 2008Jackson Roger PTool system for dynamic spinal implants
US20080140124 *30 Ene 200712 Jun 2008Dong Myung JeonSpinal rod transverse connector system
US20080183223 *26 Mar 200831 Jul 2008Jeon Dong MHybrid jointed bone screw system
US20080188898 *1 Abr 20087 Ago 2008Jackson Roger PPolyaxial bone screw with multi-part shank retainer and pressure insert
US20090018591 *25 Sep 200815 Ene 2009Hawkes David TPolyaxial Pedicle Screw Assembly
US20090105756 *23 Oct 200723 Abr 2009Marc RichelsophSpinal implant
US20090143823 *13 Nov 20084 Jun 2009Jeon Dong MTransverse connector system for spinal rods
US20090163961 *19 Dic 200725 Jun 2009X-Spine Systems, Inc.Offset multiaxial or polyaxial screw, system and assembly
US20090171395 *29 Dic 20082 Jul 2009Jeon Dong MDynamic spinal rod system
US20090192548 *26 Ene 200930 Jul 2009Jeon Dong MPedicle-laminar dynamic spinal stabilization device
US20090194206 *2 Feb 20096 Ago 2009Jeon Dong MSystems and methods for wrought nickel/titanium alloy flexible spinal rods
US20090287261 *19 Nov 2009Jackson Roger PPolyaxial bone screw with discontinuous helically wound capture connection
US20100036433 *9 Oct 200911 Feb 2010Jackson Roger PPolyaxial Bone screw assembly with fixed retaining structure
US20100049256 *30 Ene 200825 Feb 2010Dong Myung JeonAnterior cerivcal plating system
US20100087863 *31 Ago 20098 Abr 2010Lutz BiedermannRod-shaped implant in particular for stabilizing the spinal column and stabilization device including such a rod-shaped implant
US20100106198 *23 Oct 200829 Abr 2010Warsaw Orthopedic, IncNerve stimulating bone screw
US20100125302 *16 Ene 200920 May 2010Hammill Sr John ELocking Polyaxial Ball And Socket Fastener
US20100305612 *2 Dic 2010Innovative Delta Technology, LlcPolyaxial Cross Connector and Methods of Use Thereof
US20110106176 *5 May 2011Jackson Roger PPolyaxial bone screw with multi-part shank retainer and pressure insert
US20110202094 *18 Ago 2011Pereira Mario LTrans-polyaxial screw
US20110213419 *1 Sep 2011Blackstone Medical Inc.Spinal Implant
US20110213424 *12 Ago 20101 Sep 2011Lutz Biedermannreceiving part for receiving a rod for coupling the rod to a bone anchoring element
US20120029568 *2 Feb 2012Jackson Roger PSpinal connecting members with radiused rigid sleeves and tensioned cords
US20120221054 *7 May 201230 Ago 2012Jackson Roger PSoft stabilization assemblies with pretensioned cords
WO2012065077A2 *11 Nov 201118 May 2012Pereira Mario LTrans-polyaxial screw
Clasificaciones
Clasificación de EE.UU.606/266, 606/270, 606/304, 606/264, 606/276, 606/246
Clasificación internacionalA61B17/70
Clasificación cooperativaA61B17/864, A61B17/7037, A61B17/8605, A61B17/7034, A61B17/7032, A61B2017/8655
Clasificación europeaA61B17/86A, A61B17/70B2L, A61B17/70B5B
Eventos legales
FechaCódigoEventoDescripción
27 Ago 2004ASAssignment
Owner name: BLACKSTONE MEDICAL, INC., MASSACHUSETTS
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HAMMER, MICHAEL A.;LOMBARDO, ALAN;REEL/FRAME:015749/0722
Effective date: 20040825
9 Oct 2006ASAssignment
18 Oct 2010ASAssignment
Owner name: BLACKSTONE MEDICAL, INC., TEXAS
Free format text: TERMINATION OF SECURITY INTEREST IN PATENTS;ASSIGNOR:WELLS FARGO BANK, NATIONAL ASSOCIATION, SUCCESSOR-BY-MERGER TO WACHOVIA BANK, NATIONAL ASSOCIATION, AS ADMINISTRATIVE AGENT;REEL/FRAME:025150/0583
Effective date: 20100827