CA2548504C - Bone fixation assembly and method of securement - Google Patents
Bone fixation assembly and method of securement Download PDFInfo
- Publication number
- CA2548504C CA2548504C CA2548504A CA2548504A CA2548504C CA 2548504 C CA2548504 C CA 2548504C CA 2548504 A CA2548504 A CA 2548504A CA 2548504 A CA2548504 A CA 2548504A CA 2548504 C CA2548504 C CA 2548504C
- Authority
- CA
- Canada
- Prior art keywords
- bushing
- passage
- screw
- bone
- seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7059—Cortical plates
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8023—Variable length plates adjustable in both directions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8033—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers
- A61B17/8047—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers wherein the additional element surrounds the screw head in the plate hole
Abstract
A bone plate assembly (10) is provided for fixation of spaced vertebra. The bone plate assembly (10) has at least one through passage (15, 25) for securing the plate to bone with a bone fixation screw (23). The threaded shaft of a bone fixation screw (23) is inserted through a bushing (30) located in the through passage (15, 22) of the bone plate assembly (10) and the screw (23) is thereby threadably secured to the underlying bone and the bushing (30) is then compressed inward against the head (25) of the screw (23) with cams (37) that are actuated by rotating the bushing in the through passage (15, 22) whereby the screw (23) is locked relative to the bone plate assembly (10). The bushing (30) is not only compressed inwardly against the head (25) of the screw (23) but is also compressed downwardly by the cams (37) into a seat (39) to clamp separate elements (11, 12) of the bone plate assembly (10) together.
An access passage (51) in upper surface (41, 42) of bushing (30) is dimensioned (d) for receiving screw head (25) therethrough for access to a socket bore (35) within the bushing (30).
An access passage (51) in upper surface (41, 42) of bushing (30) is dimensioned (d) for receiving screw head (25) therethrough for access to a socket bore (35) within the bushing (30).
Description
BONE FIXATION ASSEMBLY AND
METHOD OF SECUREMENT
FIELD OF THE INVENTION
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
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.
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.
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.
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.
METHOD OF SECUREMENT
FIELD OF THE INVENTION
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
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.
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.
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.
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.
SUMMARY OF THE INVENTION
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.
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 has an access passage on its upper surface dimensioned for receiving the screw head therethrough for access to the socket bore, 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.
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.
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 has an access passage on its upper surface dimensioned for receiving the screw head therethrough for access to the socket bore, 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.
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 ofthe bushing whereby the bushing is generally C-shaped and may thereby be more readily inwardly compressed with a cam mechanism.
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.
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.
According to one aspect, the invention provides a bone fixation assembly comprising: (a) a fixation device having a through passage; (b) a fastening screw having a threaded shaft for insertion through the through passage and threadable insertion into bone, and a head having substantially frustospherical shaped side surfaces; (c) a bushing comprising (i) upper and lower surfaces, (ii) a sidewall with an exterior surface configured and dimensioned for axial rotation within the through passage of the fixation device and an interior surface which defines a socket bore that extends through the upper and lower surfaces and is configured and dimensioned for polyaxial rotation of the screw head therein, (iii) at least one slot located on the sidewall for allowing inward compression of the bore against the screw head, and (iv) an access passage in the upper surface dimensioned for receiving the screw head therethrough for access to the socket bore; and (d) cam means disposed between the through passage and the bushing and configured and dimensioned for inwardly compressing the bushing upon axial rotation thereof 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.
According to another aspect, the invention relates to a use of a bone plate for securing onto a bone, the bone plate comprising a through passage, a bushing suitable for insertion into the through passage, and a shaft of a fastening screw having a head and a threaded shaft adapted to be inserted through the bushing located in the through passage of the bone plate, wherein the fastening screw is adapted to be threaded into a bone until the screw head is drawn into an interior socket bore in the bushing, and wherein the bushing is adapted for inward compression 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.
BRIEF DESCRIPTION OF THE DRAWINGS
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:
FIG. 1 is a plan view of the bone fixation assembly of the present invention without inclusion of the screw head bushings;
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;
5a FIG. 3 is a top view of the C-shaped compression bushing utilized in the assembly of FIGS. 1 and 2;
FIG. 4 is a view in right side elevation of the bushing shown in FIG. 3;
FIG. 5 is a view in front elevation of the bushing shown in FIG. 3;
FIG. 6 is a view in left side elevation of the bushing shown in FIG. 3;
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;
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;
FIG. 12 is a view in front elevation of the bushing shown in FIG. 11; and 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.
One slot within the bushing may extend from the upper surface of the bushing on through the lower surface ofthe bushing whereby the bushing is generally C-shaped and may thereby be more readily inwardly compressed with a cam mechanism.
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.
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.
According to one aspect, the invention provides a bone fixation assembly comprising: (a) a fixation device having a through passage; (b) a fastening screw having a threaded shaft for insertion through the through passage and threadable insertion into bone, and a head having substantially frustospherical shaped side surfaces; (c) a bushing comprising (i) upper and lower surfaces, (ii) a sidewall with an exterior surface configured and dimensioned for axial rotation within the through passage of the fixation device and an interior surface which defines a socket bore that extends through the upper and lower surfaces and is configured and dimensioned for polyaxial rotation of the screw head therein, (iii) at least one slot located on the sidewall for allowing inward compression of the bore against the screw head, and (iv) an access passage in the upper surface dimensioned for receiving the screw head therethrough for access to the socket bore; and (d) cam means disposed between the through passage and the bushing and configured and dimensioned for inwardly compressing the bushing upon axial rotation thereof 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.
According to another aspect, the invention relates to a use of a bone plate for securing onto a bone, the bone plate comprising a through passage, a bushing suitable for insertion into the through passage, and a shaft of a fastening screw having a head and a threaded shaft adapted to be inserted through the bushing located in the through passage of the bone plate, wherein the fastening screw is adapted to be threaded into a bone until the screw head is drawn into an interior socket bore in the bushing, and wherein the bushing is adapted for inward compression 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.
BRIEF DESCRIPTION OF THE DRAWINGS
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:
FIG. 1 is a plan view of the bone fixation assembly of the present invention without inclusion of the screw head bushings;
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;
5a FIG. 3 is a top view of the C-shaped compression bushing utilized in the assembly of FIGS. 1 and 2;
FIG. 4 is a view in right side elevation of the bushing shown in FIG. 3;
FIG. 5 is a view in front elevation of the bushing shown in FIG. 3;
FIG. 6 is a view in left side elevation of the bushing shown in FIG. 3;
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;
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;
FIG. 12 is a view in front elevation of the bushing shown in FIG. 11; and 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
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.
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.
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.
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.
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.
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 3 5 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.
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.
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.
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.
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.
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 access 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.
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 therethrough. This step is accomplished by screwing threaded shank 24 of screw 23 into 20 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.
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.
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.
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.
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.
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 for minimum invasive surgical application of the device of the present invention.
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.
Figure 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.
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).
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 cam 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.
3, 4, 5 and 6.
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 3 5 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.
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.
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.
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.
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.
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 access 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.
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 therethrough. This step is accomplished by screwing threaded shank 24 of screw 23 into 20 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.
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.
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.
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.
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.
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 for minimum invasive surgical application of the device of the present invention.
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.
Figure 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.
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).
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 cam 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.
Claims (13)
1. A bone fixation assembly comprising:
(a) a fixation device having a through passage;
(b) a fastening screw having a threaded shaft for insertion through said through passage and threadable insertion into bone, and a head having substantially frustospherical shaped side surfaces;
(c) a bushing comprising (i) upper and lower surfaces, (ii) a sidewall with an exterior surface configured and dimensioned for axial rotation within said through passage of said fixation device and an interior surface which defines a socket bore that extends through said upper and lower surfaces and is configured and dimensioned for polyaxial rotation of said screw head therein, (iii) at least one slot located on said sidewall for allowing inward compression of said bore against said screw head, and (iv) an access passage in said upper surface dimensioned for receiving said screw head therethrough for access to said socket bore;
and (d) cam means disposed between said through passage and said bushing and configured and dimensioned for inwardly compressing said bushing upon axial rotation thereof in said through passage whereby said bore is compressed against said screw head for locking said screw at a desired attitude relative to said fixation device.
(a) a fixation device having a through passage;
(b) a fastening screw having a threaded shaft for insertion through said through passage and threadable insertion into bone, and a head having substantially frustospherical shaped side surfaces;
(c) a bushing comprising (i) upper and lower surfaces, (ii) a sidewall with an exterior surface configured and dimensioned for axial rotation within said through passage of said fixation device and an interior surface which defines a socket bore that extends through said upper and lower surfaces and is configured and dimensioned for polyaxial rotation of said screw head therein, (iii) at least one slot located on said sidewall for allowing inward compression of said bore against said screw head, and (iv) an access passage in said upper surface dimensioned for receiving said screw head therethrough for access to said socket bore;
and (d) cam means disposed between said through passage and said bushing and configured and dimensioned for inwardly compressing said bushing upon axial rotation thereof in said through passage whereby said bore is compressed against said screw head for locking said screw at a desired attitude relative to said fixation device.
2. The bone fixation assembly of claim 1, wherein said bushing socket bore has a substantially frustospherical shape with a central longitudinal axis.
3. The bone fixation assembly of claim 2, wherein said socket bore extends through said central longitudinal axis and is perpendicular to said upper and lower surfaces.
4. The bone fixation assembly of any one of claims 1 to 3, wherein one of said at least one slot is a slot extending fully through said sidewall from said upper surface through said lower surface.
5. The bone fixation assembly of claim 3, wherein a bottom portion of said through passage has an inverted frustoconical seat and said exterior surface of said bushing has a mating inverted frustoconical base configured and dimensioned for seating in said seat, said seat and said base coaxial with said central longitudinal axis, said cam means comprised of annularly spaced upwardly extending ramp cams on said upper surface of said bushing and inwardly extending overhangs on said through passage positioned above said upper surface and having downwardly facing cam following surfaces configured and dimensioned for engaging said ramp cams when said bushing is axially rotated in said through passage whereby said bushing is driven downwardly into said seat by said ramp cams to thereby inwardly compress said bushing bore against said screw head.
6. The bone fixation assembly of any one of claims 1 to 5, wherein said cam means includes radially extending ramp cams on said exterior surface of said bushing dimensioned and configures for compressing said socket bore inwardly when said bushing is axially rotated in said though passage.
7. The bone fixation assembly of any one of claims 1 to 6, wherein said cam means includes ridges on at least one of said cams.
8. The bone fixation assembly of claim 3, wherein a bottom portion of said through passage has an inverted frustoconical seat and said exterior surface of said bushing has a mating inverted frustoconical base configured and dimensioned for seating in said seat, said seat and said base coaxial with said central longitudinal axis, said cam means comprising a threaded engagement between said bottom portion of said through passage and said bushing base whereby when said bushing is rotated in said through passage seat said bushing is drawn into said seat and thereby inwardly compressed against said screw head.
9. The bone fixation assembly of claim 8, wherein said threaded engagement is configured with left hand threads.
10. The bone fixation assembly of claim 1, wherein said fixation device is a bone plate having a first screw receiving socket element at a distal end of said assembly and 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 extending proximally from said first socket element and having an elongate through slot therealong, a second screw receiving socket element including said through passage containing said bushing and said cam means and slidably received over said arm with said socket bore aligned over said slot for receiving the shank of a fixation screw therethrough for attachment to bone, said bushing seat including portions of said through slot whereby said second socket element is clamped to said arm when said bushing is pressed downwardly into said seat by said cam means.
11. Use of a bone plate for securing onto a bone, the bone plate comprising a through passage, a bushing suitable for insertion into the through passage, and a shaft of a fastening screw having a head and a threaded shaft adapted to be inserted through the bushing located in the through passage of the bone plate, wherein the fastening screw is adapted to be threaded into a bone until the screw head is drawn into an interior socket bore in the bushing, and wherein the bushing is adapted for inward compression 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.
12. The use of claim 11, wherein the bushing is adapted for downward compression into a seat to clamp separate elements of said bone plate together.
13. The use of claim 11, wherein the fastening screw is adapted to be threaded clockwise while the bushing is adapted to be threaded counterclockwise.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/731,625 US6945975B2 (en) | 2003-07-07 | 2003-12-09 | Bone fixation assembly and method of securement |
US10/731,625 | 2003-12-09 | ||
US10/815,160 US6979334B2 (en) | 2003-07-07 | 2004-03-31 | Bone fixation assembly and method of securement |
US10/815,160 | 2004-03-31 | ||
PCT/US2004/032798 WO2005060845A1 (en) | 2003-12-09 | 2004-10-06 | Bone fixation assembly and method of securement |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2548504A1 CA2548504A1 (en) | 2005-07-07 |
CA2548504C true CA2548504C (en) | 2012-07-03 |
Family
ID=37579085
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2548504A Expired - Fee Related CA2548504C (en) | 2003-12-09 | 2004-10-06 | Bone fixation assembly and method of securement |
Country Status (10)
Country | Link |
---|---|
US (4) | US6945975B2 (en) |
EP (1) | EP1691699B1 (en) |
JP (1) | JP4456607B2 (en) |
CN (1) | CN100435743C (en) |
AU (1) | AU2004305481B2 (en) |
BR (1) | BRPI0417500B1 (en) |
CA (1) | CA2548504C (en) |
ES (1) | ES2404031T3 (en) |
HK (1) | HK1099504A1 (en) |
WO (1) | WO2005060845A1 (en) |
Families Citing this family (242)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7833250B2 (en) | 2004-11-10 | 2010-11-16 | Jackson Roger P | Polyaxial bone screw with helically wound capture connection |
US6726689B2 (en) | 2002-09-06 | 2004-04-27 | Roger P. Jackson | Helical interlocking mating guide and advancement structure |
US8377100B2 (en) | 2000-12-08 | 2013-02-19 | Roger P. Jackson | Closure for open-headed medical implant |
US6511481B2 (en) | 2001-03-30 | 2003-01-28 | Triage Medical, Inc. | Method and apparatus for fixation of proximal femoral fractures |
US6887243B2 (en) | 2001-03-30 | 2005-05-03 | Triage Medical, Inc. | Method and apparatus for bone fixation with secondary compression |
US8292926B2 (en) | 2005-09-30 | 2012-10-23 | Jackson Roger P | Dynamic stabilization connecting member with elastic core and outer sleeve |
US8353932B2 (en) | 2005-09-30 | 2013-01-15 | Jackson Roger P | Polyaxial bone anchor assembly with one-piece closure, pressure insert and plastic elongate member |
US7862587B2 (en) | 2004-02-27 | 2011-01-04 | Jackson Roger P | Dynamic stabilization assemblies, tool set and method |
US10729469B2 (en) | 2006-01-09 | 2020-08-04 | Roger P. Jackson | Flexible spinal stabilization assembly with spacer having off-axis core member |
US10258382B2 (en) | 2007-01-18 | 2019-04-16 | Roger P. Jackson | Rod-cord dynamic connection assemblies with slidable bone anchor attachment members along the cord |
US7766947B2 (en) * | 2001-10-31 | 2010-08-03 | Ortho Development Corporation | Cervical plate for stabilizing the human spine |
US6793678B2 (en) | 2002-06-27 | 2004-09-21 | Depuy Acromed, Inc. | Prosthetic intervertebral motion disc having dampening |
US7001389B1 (en) | 2002-07-05 | 2006-02-21 | Navarro Richard R | Fixed and variable locking fixation assembly |
WO2004008949A2 (en) * | 2002-07-19 | 2004-01-29 | Triage Medical, Inc. | Method and apparatus for spinal fixation |
US20060009773A1 (en) * | 2002-09-06 | 2006-01-12 | Jackson Roger P | Helical interlocking mating guide and advancement structure |
US8257402B2 (en) | 2002-09-06 | 2012-09-04 | Jackson Roger P | Closure for rod receiving orthopedic implant having left handed thread removal |
US8876868B2 (en) | 2002-09-06 | 2014-11-04 | Roger P. Jackson | Helical guide and advancement flange with radially loaded lip |
US8282673B2 (en) | 2002-09-06 | 2012-10-09 | Jackson Roger P | Anti-splay medical implant closure with multi-surface removal aperture |
US7476228B2 (en) * | 2002-10-11 | 2009-01-13 | Abdou M Samy | Distraction screw for skeletal surgery and method of use |
WO2004062482A2 (en) * | 2003-01-10 | 2004-07-29 | Abdou Samy M | Plating system for bone fixation and subsidence and method of implantation |
US7070601B2 (en) * | 2003-01-16 | 2006-07-04 | Triage Medical, Inc. | Locking plate for bone anchors |
US7621918B2 (en) | 2004-11-23 | 2009-11-24 | Jackson Roger P | Spinal fixation tool set and method |
US6716214B1 (en) | 2003-06-18 | 2004-04-06 | Roger P. Jackson | Polyaxial bone screw with spline capture connection |
US8540753B2 (en) | 2003-04-09 | 2013-09-24 | Roger P. Jackson | Polyaxial bone screw with uploaded threaded shank and method of assembly and use |
US7377923B2 (en) | 2003-05-22 | 2008-05-27 | Alphatec Spine, Inc. | Variable angle spinal screw assembly |
US8137386B2 (en) | 2003-08-28 | 2012-03-20 | Jackson Roger P | Polyaxial bone screw apparatus |
US8926670B2 (en) | 2003-06-18 | 2015-01-06 | Roger P. Jackson | Polyaxial bone screw assembly |
US8814911B2 (en) | 2003-06-18 | 2014-08-26 | Roger P. Jackson | Polyaxial bone screw with cam connection and lock and release insert |
US8092500B2 (en) | 2007-05-01 | 2012-01-10 | Jackson Roger P | Dynamic stabilization connecting member with floating core, compression spacer and over-mold |
US8377102B2 (en) | 2003-06-18 | 2013-02-19 | Roger P. Jackson | Polyaxial bone anchor with spline capture connection and lower pressure insert |
US7766915B2 (en) | 2004-02-27 | 2010-08-03 | Jackson Roger P | Dynamic fixation assemblies with inner core and outer coil-like member |
US8398682B2 (en) | 2003-06-18 | 2013-03-19 | Roger P. Jackson | Polyaxial bone screw assembly |
US7967850B2 (en) | 2003-06-18 | 2011-06-28 | Jackson Roger P | Polyaxial bone anchor with helical capture connection, insert and dual locking assembly |
US8366753B2 (en) | 2003-06-18 | 2013-02-05 | Jackson Roger P | Polyaxial bone screw assembly with fixed retaining structure |
US20100211114A1 (en) * | 2003-06-18 | 2010-08-19 | Jackson Roger P | Polyaxial bone anchor with shelf capture connection |
US7776067B2 (en) | 2005-05-27 | 2010-08-17 | Jackson Roger P | Polyaxial bone screw with shank articulation pressure insert and method |
US8257398B2 (en) | 2003-06-18 | 2012-09-04 | Jackson Roger P | Polyaxial bone screw with cam capture |
US8105367B2 (en) | 2003-09-29 | 2012-01-31 | Smith & Nephew, Inc. | Bone plate and bone plate assemblies including polyaxial fasteners |
US7967826B2 (en) | 2003-10-21 | 2011-06-28 | Theken Spine, Llc | Connector transfer tool for internal structure stabilization systems |
US7588588B2 (en) | 2003-10-21 | 2009-09-15 | Innovative Spinal Technologies | System and method for stabilizing of internal structures |
US7905907B2 (en) | 2003-10-21 | 2011-03-15 | Theken Spine, Llc | Internal structure stabilization system for spanning three or more structures |
EP1691700B1 (en) | 2003-12-01 | 2012-01-11 | Smith & Nephew, Inc. | Humeral nail with insert for fixing a screw |
US7527638B2 (en) | 2003-12-16 | 2009-05-05 | Depuy Spine, Inc. | Methods and devices for minimally invasive spinal fixation element placement |
US11419642B2 (en) | 2003-12-16 | 2022-08-23 | Medos International Sarl | Percutaneous access devices and bone anchor assemblies |
US7179261B2 (en) | 2003-12-16 | 2007-02-20 | Depuy Spine, Inc. | Percutaneous access devices and bone anchor assemblies |
US8152810B2 (en) | 2004-11-23 | 2012-04-10 | Jackson Roger P | Spinal fixation tool set and method |
EP1720468A4 (en) | 2004-02-27 | 2010-01-27 | Roger P Jackson | Orthopedic implant rod reduction tool set and method |
US11241261B2 (en) | 2005-09-30 | 2022-02-08 | Roger P Jackson | Apparatus and method for soft spinal stabilization using a tensionable cord and releasable end structure |
US7160300B2 (en) | 2004-02-27 | 2007-01-09 | Jackson Roger P | Orthopedic implant rod reduction tool set and method |
JP2008500844A (en) * | 2004-03-26 | 2008-01-17 | スミス アンド ネフュー インコーポレーテッド | Method for treating femoral fracture and device for femoral fracture |
US7854752B2 (en) | 2004-08-09 | 2010-12-21 | Theken Spine, Llc | System and method for dynamic skeletal stabilization |
US7651502B2 (en) | 2004-09-24 | 2010-01-26 | Jackson Roger P | Spinal fixation tool set and method for rod reduction and fastener insertion |
WO2006041963A2 (en) | 2004-10-05 | 2006-04-20 | Abdou M S | Devices and methods for inter-vertebral orthopedic device placement |
US9615866B1 (en) | 2004-10-18 | 2017-04-11 | Nuvasive, Inc. | Surgical fixation system and related methods |
JP2008519656A (en) | 2004-11-10 | 2008-06-12 | ロジャー・ピー・ジャクソン | Helical guide and forward flange with break extension |
US8926672B2 (en) | 2004-11-10 | 2015-01-06 | Roger P. Jackson | Splay control closure for open bone anchor |
WO2006057837A1 (en) | 2004-11-23 | 2006-06-01 | Jackson Roger P | Spinal fixation tool attachment structure |
US9918745B2 (en) | 2009-06-15 | 2018-03-20 | Roger P. Jackson | Polyaxial bone anchor with pop-on shank and winged insert with friction fit compressive collet |
US7875065B2 (en) | 2004-11-23 | 2011-01-25 | Jackson Roger P | Polyaxial bone screw with multi-part shank retainer and pressure insert |
US9168069B2 (en) | 2009-06-15 | 2015-10-27 | Roger P. Jackson | Polyaxial bone anchor with pop-on shank and winged insert with lower skirt for engaging a friction fit retainer |
US8444681B2 (en) | 2009-06-15 | 2013-05-21 | Roger P. Jackson | Polyaxial bone anchor with pop-on shank, friction fit retainer and winged insert |
US8308782B2 (en) | 2004-11-23 | 2012-11-13 | Jackson Roger P | Bone anchors with longitudinal connecting member engaging inserts and closures for fixation and optional angulation |
US9216041B2 (en) | 2009-06-15 | 2015-12-22 | Roger P. Jackson | Spinal connecting members with tensioned cords and rigid sleeves for engaging compression inserts |
US9980753B2 (en) | 2009-06-15 | 2018-05-29 | Roger P Jackson | pivotal anchor with snap-in-place insert having rotation blocking extensions |
WO2006058221A2 (en) | 2004-11-24 | 2006-06-01 | Abdou Samy M | Devices and methods for inter-vertebral orthopedic device placement |
US7648523B2 (en) * | 2004-12-08 | 2010-01-19 | Interventional Spine, Inc. | Method and apparatus for spinal stabilization |
US7935137B2 (en) | 2004-12-08 | 2011-05-03 | Depuy Spine, Inc. | Locking bone screw and spinal plate system |
US7857832B2 (en) | 2004-12-08 | 2010-12-28 | Interventional Spine, Inc. | Method and apparatus for spinal stabilization |
BRPI0607139A2 (en) | 2005-02-18 | 2009-08-11 | M S Abdou | bone fixation set |
US7901437B2 (en) | 2007-01-26 | 2011-03-08 | Jackson Roger P | Dynamic stabilization member with molded connection |
US10076361B2 (en) | 2005-02-22 | 2018-09-18 | Roger P. Jackson | Polyaxial bone screw with spherical capture, compression and alignment and retention structures |
US7749257B2 (en) * | 2005-04-12 | 2010-07-06 | Robert J. Medoff | Bearing plate for use in fracture fixation having a spherical bearing hole with yielding expandability |
US8382807B2 (en) | 2005-07-25 | 2013-02-26 | Smith & Nephew, Inc. | Systems and methods for using polyaxial plates |
CN101272743B (en) | 2005-07-25 | 2011-01-26 | 史密夫和内修有限公司 | Polyaxial fastener systems |
US8105368B2 (en) | 2005-09-30 | 2012-01-31 | Jackson Roger P | Dynamic stabilization connecting member with slitted core and outer sleeve |
US7857833B2 (en) * | 2005-10-06 | 2010-12-28 | Abdou M Samy | Devices and methods for inter-vertebral orthopedic device placement |
US7704271B2 (en) | 2005-12-19 | 2010-04-27 | Abdou M Samy | Devices and methods for inter-vertebral orthopedic device placement |
US20080294198A1 (en) * | 2006-01-09 | 2008-11-27 | Jackson Roger P | Dynamic spinal stabilization assembly with torsion and shear control |
US7927360B2 (en) * | 2006-01-26 | 2011-04-19 | Warsaw Orthopedic, Inc. | Spinal anchor assemblies having extended receivers |
US7520879B2 (en) * | 2006-02-07 | 2009-04-21 | Warsaw Orthopedic, Inc. | Surgical instruments and techniques for percutaneous placement of spinal stabilization elements |
US9687282B2 (en) * | 2006-03-07 | 2017-06-27 | Orthohelix Surgical Designs, Inc. | Orthopedic plate having threaded holes for locking screws or pegs and non-threaded holes for a variable axis locking mechanism |
SE531987C2 (en) * | 2006-03-17 | 2009-09-22 | Sven Olerud | Device for attaching and fixing a first element to a second element |
US8025681B2 (en) | 2006-03-29 | 2011-09-27 | Theken Spine, Llc | Dynamic motion spinal stabilization system |
US8216240B2 (en) * | 2006-04-24 | 2012-07-10 | Warsaw Orthopedic | Cam based reduction instrument |
WO2008008511A2 (en) * | 2006-07-14 | 2008-01-17 | Laszlo Garamszegi | Pedicle screw assembly with inclined surface seat |
US8303630B2 (en) | 2006-07-27 | 2012-11-06 | Samy Abdou | Devices and methods for the minimally invasive treatment of spinal stenosis |
US8876874B2 (en) | 2006-08-21 | 2014-11-04 | M. Samy Abdou | Bone screw systems and methods of use |
FR2905589B1 (en) * | 2006-09-08 | 2009-04-17 | Alexandre Worcel | SURGICAL APPARATUS FOR OSTEOSYNTHESIS. |
US8066750B2 (en) * | 2006-10-06 | 2011-11-29 | Warsaw Orthopedic, Inc | Port structures for non-rigid bone plates |
US8361130B2 (en) | 2006-10-06 | 2013-01-29 | Depuy Spine, Inc. | Bone screw fixation |
US8287575B2 (en) * | 2006-11-09 | 2012-10-16 | Stryker Trauma Gmbh | Polyaxial locking mechanism |
US7967821B2 (en) * | 2006-11-20 | 2011-06-28 | Depuy Spine, Inc. | Break-off screw extension removal tools |
WO2008070863A2 (en) | 2006-12-07 | 2008-06-12 | Interventional Spine, Inc. | Intervertebral implant |
CA2670988C (en) | 2006-12-08 | 2014-03-25 | Roger P. Jackson | Tool system for dynamic spinal implants |
US8475498B2 (en) | 2007-01-18 | 2013-07-02 | Roger P. Jackson | Dynamic stabilization connecting member with cord connection |
US8366745B2 (en) | 2007-05-01 | 2013-02-05 | Jackson Roger P | Dynamic stabilization assembly having pre-compressed spacers with differential displacements |
US8012177B2 (en) | 2007-02-12 | 2011-09-06 | Jackson Roger P | Dynamic stabilization assembly with frusto-conical connection |
US8133261B2 (en) | 2007-02-26 | 2012-03-13 | Depuy Spine, Inc. | Intra-facet fixation device and method of use |
EP2131767B1 (en) * | 2007-03-12 | 2017-11-22 | Stout Medical Group, L.P. | Expandable attachment device |
US8894685B2 (en) | 2007-04-13 | 2014-11-25 | DePuy Synthes Products, LLC | Facet fixation and fusion screw and washer assembly and method of use |
US8043334B2 (en) | 2007-04-13 | 2011-10-25 | Depuy Spine, Inc. | Articulating facet fusion screw |
US8197513B2 (en) | 2007-04-13 | 2012-06-12 | Depuy Spine, Inc. | Facet fixation and fusion wedge and method of use |
US8979904B2 (en) | 2007-05-01 | 2015-03-17 | Roger P Jackson | Connecting member with tensioned cord, low profile rigid sleeve and spacer with torsion control |
US10383660B2 (en) | 2007-05-01 | 2019-08-20 | Roger P. Jackson | Soft stabilization assemblies with pretensioned cords |
US8197517B1 (en) | 2007-05-08 | 2012-06-12 | Theken Spine, Llc | Frictional polyaxial screw assembly |
US7951173B2 (en) | 2007-05-16 | 2011-05-31 | Ortho Innovations, Llc | Pedicle screw implant system |
US7942910B2 (en) | 2007-05-16 | 2011-05-17 | Ortho Innovations, Llc | Polyaxial bone screw |
US7942909B2 (en) | 2009-08-13 | 2011-05-17 | Ortho Innovations, Llc | Thread-thru polyaxial pedicle screw system |
US8197518B2 (en) | 2007-05-16 | 2012-06-12 | Ortho Innovations, Llc | Thread-thru polyaxial pedicle screw system |
US7947065B2 (en) | 2008-11-14 | 2011-05-24 | Ortho Innovations, Llc | Locking polyaxial ball and socket fastener |
US7942911B2 (en) | 2007-05-16 | 2011-05-17 | Ortho Innovations, Llc | Polyaxial bone screw |
CA2690038C (en) | 2007-05-31 | 2012-11-27 | Roger P. Jackson | Dynamic stabilization connecting member with pre-tensioned solid core |
US7998176B2 (en) | 2007-06-08 | 2011-08-16 | Interventional Spine, Inc. | Method and apparatus for spinal stabilization |
US7947046B2 (en) * | 2007-06-21 | 2011-05-24 | Warsaw Orthopedic, Inc. | Anchor extenders for minimally invasive surgical procedures |
US8900307B2 (en) | 2007-06-26 | 2014-12-02 | DePuy Synthes Products, LLC | Highly lordosed fusion cage |
DE102007037872A1 (en) * | 2007-08-10 | 2009-02-12 | Smith & Nephew Orthopaedics Ag | Device for fixation of bone fractures |
SG183774A1 (en) * | 2007-08-27 | 2012-09-27 | Sushrut Surgicals Pvt Ltd | Bone plates and bone plate assemblies |
US8414588B2 (en) * | 2007-10-04 | 2013-04-09 | Depuy Spine, Inc. | Methods and devices for minimally invasive spinal connection element delivery |
US8911477B2 (en) | 2007-10-23 | 2014-12-16 | Roger P. Jackson | Dynamic stabilization member with end plate support and cable core extension |
US20090105764A1 (en) * | 2007-10-23 | 2009-04-23 | Jackson Roger P | Dynamic stabilization member with fin support and solid core extension |
WO2009059227A1 (en) * | 2007-11-02 | 2009-05-07 | Stout Medical Group, L.P. | Expandable attachment device and method |
JP5441922B2 (en) | 2008-01-17 | 2014-03-12 | ジンテス ゲゼルシャフト ミット ベシュレンクテル ハフツング | Inflatable intervertebral implant and related manufacturing method |
US8282675B2 (en) * | 2008-01-25 | 2012-10-09 | Depuy Spine, Inc. | Anti-backout mechanism |
WO2009097623A2 (en) | 2008-02-02 | 2009-08-06 | Texas Scottish Rite Hospital For Children | Pedicle screw |
US9345517B2 (en) | 2008-02-02 | 2016-05-24 | Globus Medical, Inc. | Pedicle screw having a removable rod coupling |
US9579126B2 (en) | 2008-02-02 | 2017-02-28 | Globus Medical, Inc. | Spinal rod link reducer |
WO2009097624A2 (en) * | 2008-02-02 | 2009-08-06 | Texas Scottish Rite Hospital For Children | Spinal rod link reducer |
EP2262449B1 (en) | 2008-04-05 | 2020-03-11 | Synthes GmbH | Expandable intervertebral implant |
WO2009132302A1 (en) | 2008-04-25 | 2009-10-29 | Pioneer Surgical Technology, Inc. | Bone plate system |
EP2442739A1 (en) * | 2008-08-01 | 2012-04-25 | Jackson, Roger P. | Longitudinal connecting member with sleeved tensioned cords |
US8784458B1 (en) | 2008-10-10 | 2014-07-22 | Greatbatch Medical S.A. | Polyaxial insert for surgical screws |
US8574272B2 (en) * | 2008-10-14 | 2013-11-05 | K2M, Inc. | Semi-constrained screw and spinal plate assembly |
US8696717B2 (en) * | 2008-11-05 | 2014-04-15 | K2M, Inc. | Multi-planar, taper lock screw with additional lock |
US8377101B2 (en) * | 2008-11-05 | 2013-02-19 | K2M, Inc. | Multi-planar taper lock screw with increased rod friction |
US20100121383A1 (en) * | 2008-11-10 | 2010-05-13 | Todd Stanaford | Method, system, and apparatus for mammalian bony segment stabilization |
US8821554B2 (en) | 2008-11-10 | 2014-09-02 | Amendia, Inc. | Method, system, and apparatus for mammalian bony segment stabilization |
US8075603B2 (en) | 2008-11-14 | 2011-12-13 | Ortho Innovations, Llc | Locking polyaxial ball and socket fastener |
US8603145B2 (en) * | 2008-12-16 | 2013-12-10 | Zimmer Spine, Inc. | Coaxially lockable poly-axial bone fastener assemblies |
US9526620B2 (en) | 2009-03-30 | 2016-12-27 | DePuy Synthes Products, Inc. | Zero profile spinal fusion cage |
JP5658236B2 (en) * | 2009-05-12 | 2015-01-21 | シンセス ゲゼルシャフト ミット ベシュレンクテル ハフツングSynthes Gmbh | Re-adjustable fixing plate hole |
US8231632B1 (en) * | 2009-05-21 | 2012-07-31 | Jordan Christopher S | Cannulated surgical screw bone filler adapter |
US8998959B2 (en) | 2009-06-15 | 2015-04-07 | Roger P Jackson | Polyaxial bone anchors with pop-on shank, fully constrained friction fit retainer and lock and release insert |
US11229457B2 (en) | 2009-06-15 | 2022-01-25 | Roger P. Jackson | Pivotal bone anchor assembly with insert tool deployment |
US9668771B2 (en) | 2009-06-15 | 2017-06-06 | Roger P Jackson | Soft stabilization assemblies with off-set connector |
US11464549B2 (en) | 2009-06-15 | 2022-10-11 | Roger P. Jackson | Pivotal bone anchor assembly with horizontal tool engagement grooves and insert with upright arms having flared outer portions |
AU2010275481B2 (en) * | 2009-07-24 | 2013-10-10 | Spinal Usa, Inc. | Bone plate system and methods of using the same |
AU2010275475B2 (en) | 2009-07-24 | 2013-10-03 | Spinal Usa, Inc. | Bone plate screw-blocking systems and methods |
ITTO20090579A1 (en) * | 2009-07-29 | 2011-01-30 | Traumavet S R L | COMPASS FOR OSTEOSYNTHESIS DEVICE AND OSTEOSYNTHESIS DEVICE INCLUDING A COMPACT SOCKET. |
US8496692B2 (en) * | 2009-09-21 | 2013-07-30 | Jmea Corporation | Locking securing member |
AU2010303934B2 (en) | 2009-10-05 | 2014-03-27 | Roger P. Jackson | Polyaxial bone anchor with non-pivotable retainer and pop-on shank, some with friction fit |
USD734853S1 (en) | 2009-10-14 | 2015-07-21 | Nuvasive, Inc. | Bone plate |
WO2011057079A1 (en) * | 2009-11-05 | 2011-05-12 | K2M, Inc. | Semi-constrained bone screw |
US8764806B2 (en) | 2009-12-07 | 2014-07-01 | Samy Abdou | Devices and methods for minimally invasive spinal stabilization and instrumentation |
US9393129B2 (en) | 2009-12-10 | 2016-07-19 | DePuy Synthes Products, Inc. | Bellows-like expandable interbody fusion cage |
US8632575B2 (en) * | 2010-03-03 | 2014-01-21 | Globus Medical | Low profile fastening assembly |
FR2956971B1 (en) | 2010-03-08 | 2012-03-02 | Memometal Technologies | PLATE OSTEOSYNTHESIS SYSTEM |
US8808335B2 (en) * | 2010-03-08 | 2014-08-19 | Miami Device Solutions, Llc | Locking element for a polyaxial bone anchor, bone plate assembly and tool |
FR2956972B1 (en) | 2010-03-08 | 2012-12-28 | Memometal Technologies | ARTICULATED OSTEOSYNTHESIS PLATE |
US8845733B2 (en) | 2010-06-24 | 2014-09-30 | DePuy Synthes Products, LLC | Lateral spondylolisthesis reduction cage |
US8979860B2 (en) | 2010-06-24 | 2015-03-17 | DePuy Synthes Products. LLC | Enhanced cage insertion device |
TW201215379A (en) | 2010-06-29 | 2012-04-16 | Synthes Gmbh | Distractible intervertebral implant |
US9084634B1 (en) | 2010-07-09 | 2015-07-21 | Theken Spine, Llc | Uniplanar screw |
US10603083B1 (en) | 2010-07-09 | 2020-03-31 | Theken Spine, Llc | Apparatus and method for limiting a range of angular positions of a screw |
US9044277B2 (en) | 2010-07-12 | 2015-06-02 | DePuy Synthes Products, Inc. | Pedicular facet fusion screw with plate |
EP2611373B1 (en) | 2010-08-30 | 2015-11-04 | Zimmer Spine, Inc. | Polyaxial pedicle screw |
EP2613719A1 (en) | 2010-09-08 | 2013-07-17 | Roger P. Jackson | Dynamic stabilization members with elastic and inelastic sections |
US8784027B2 (en) | 2010-09-14 | 2014-07-22 | Enduralock, Llc | Ratchet locking mechanism for threaded fastener |
US9657766B2 (en) | 2010-09-14 | 2017-05-23 | Enduralock, Llc | Tools and ratchet locking mechanisms for threaded fasteners |
CA2811562C (en) * | 2010-09-27 | 2017-11-21 | Apifix Ltd. | Ratcheted spinal device |
US9402732B2 (en) | 2010-10-11 | 2016-08-02 | DePuy Synthes Products, Inc. | Expandable interspinous process spacer implant |
JP2013545527A (en) | 2010-11-02 | 2013-12-26 | ロジャー・ピー・ジャクソン | Multi-axis bone anchor with pop-on shank and pivotable retainer |
US8992579B1 (en) | 2011-03-08 | 2015-03-31 | Nuvasive, Inc. | Lateral fixation constructs and related methods |
WO2012128825A1 (en) | 2011-03-24 | 2012-09-27 | Jackson Roger P | Polyaxial bone anchor with compound articulation and pop-on shank |
US8828059B2 (en) | 2011-04-25 | 2014-09-09 | Warsaw Orthopedic, Inc. | Elongated connecting elements for minimally invasive surgical procedures |
US8617218B2 (en) | 2011-05-13 | 2013-12-31 | Warsaw Orthoepdic, Inc. | Bone anchor extenders |
FR2975889B1 (en) * | 2011-06-06 | 2013-07-05 | Alexandre Worcel | PLATE AND PINE OSTEOSYNTHESIS DEVICE |
BR112013032140A2 (en) | 2011-06-15 | 2016-12-13 | Smith & Nephew Inc | variable angle locking implant |
US9498259B2 (en) | 2011-06-29 | 2016-11-22 | Albany Medical College | Dynamic spinal plating system |
US8845728B1 (en) | 2011-09-23 | 2014-09-30 | Samy Abdou | Spinal fixation devices and methods of use |
US9414865B2 (en) | 2011-11-01 | 2016-08-16 | Synergy Disc Replacement Inc. | Joint and bone fixation |
US9119678B2 (en) | 2011-11-01 | 2015-09-01 | Synergy Disc Replacement Inc. | Facet fixation systems |
US9241807B2 (en) | 2011-12-23 | 2016-01-26 | Pioneer Surgical Technology, Inc. | Systems and methods for inserting a spinal device |
US8911479B2 (en) | 2012-01-10 | 2014-12-16 | Roger P. Jackson | Multi-start closures for open implants |
US20130226240A1 (en) | 2012-02-22 | 2013-08-29 | Samy Abdou | Spinous process fixation devices and methods of use |
US9060815B1 (en) | 2012-03-08 | 2015-06-23 | Nuvasive, Inc. | Systems and methods for performing spine surgery |
EP2877127B1 (en) | 2012-07-26 | 2019-08-21 | Synthes GmbH | Expandable implant |
US9198767B2 (en) | 2012-08-28 | 2015-12-01 | Samy Abdou | Devices and methods for spinal stabilization and instrumentation |
US20140067069A1 (en) | 2012-08-30 | 2014-03-06 | Interventional Spine, Inc. | Artificial disc |
US9320617B2 (en) | 2012-10-22 | 2016-04-26 | Cogent Spine, LLC | Devices and methods for spinal stabilization and instrumentation |
US8911478B2 (en) | 2012-11-21 | 2014-12-16 | Roger P. Jackson | Splay control closure for open bone anchor |
US20140197264A1 (en) * | 2013-01-14 | 2014-07-17 | Smart Pipe Company, Inc. | Inventive system and methods for coiling in non stress inducing position for continuous pipelines of small and large diameters, reduced in profile or round, for transport and storage and installation |
US9113968B2 (en) * | 2013-01-28 | 2015-08-25 | Nextremity Solutions, Inc. | Dynamic bone plate compression device and method |
US10058354B2 (en) | 2013-01-28 | 2018-08-28 | Roger P. Jackson | Pivotal bone anchor assembly with frictional shank head seating surfaces |
US8852239B2 (en) | 2013-02-15 | 2014-10-07 | Roger P Jackson | Sagittal angle screw with integral shank and receiver |
US9522070B2 (en) | 2013-03-07 | 2016-12-20 | Interventional Spine, Inc. | Intervertebral implant |
US9028498B2 (en) | 2013-03-14 | 2015-05-12 | Innovasis, Inc. | Modular bone fixation plate assembly |
US20140277155A1 (en) | 2013-03-14 | 2014-09-18 | K2M, Inc. | Taper lock hook |
US10292832B2 (en) | 2013-03-14 | 2019-05-21 | Ohio State Innovation Foundation | Spinal fixation device |
US9707096B2 (en) | 2013-03-14 | 2017-07-18 | K2M, Inc. | Spinal fixation device |
US9453526B2 (en) | 2013-04-30 | 2016-09-27 | Degen Medical, Inc. | Bottom-loading anchor assembly |
US9522028B2 (en) | 2013-07-03 | 2016-12-20 | Interventional Spine, Inc. | Method and apparatus for sacroiliac joint fixation |
US9943341B2 (en) | 2013-07-16 | 2018-04-17 | K2M, Llc | Retention plate member for a spinal plate system |
US9468479B2 (en) | 2013-09-06 | 2016-10-18 | Cardinal Health 247, Inc. | Bone plate |
US9517089B1 (en) | 2013-10-08 | 2016-12-13 | Nuvasive, Inc. | Bone anchor with offset rod connector |
US9566092B2 (en) | 2013-10-29 | 2017-02-14 | Roger P. Jackson | Cervical bone anchor with collet retainer and outer locking sleeve |
US9717533B2 (en) | 2013-12-12 | 2017-08-01 | Roger P. Jackson | Bone anchor closure pivot-splay control flange form guide and advancement structure |
US9451993B2 (en) | 2014-01-09 | 2016-09-27 | Roger P. Jackson | Bi-radial pop-on cervical bone anchor |
US9597119B2 (en) | 2014-06-04 | 2017-03-21 | Roger P. Jackson | Polyaxial bone anchor with polymer sleeve |
US10064658B2 (en) | 2014-06-04 | 2018-09-04 | Roger P. Jackson | Polyaxial bone anchor with insert guides |
US11219471B2 (en) | 2014-10-21 | 2022-01-11 | Roger P. Jackson | Pivotal bone anchor receiver having an insert with post-placement tool deployment |
DE102014117175A1 (en) * | 2014-11-24 | 2016-05-25 | Aesculap Ag | Pedicle screw system and spine stabilization system |
US11426290B2 (en) | 2015-03-06 | 2022-08-30 | DePuy Synthes Products, Inc. | Expandable intervertebral implant, system, kit and method |
US10215217B2 (en) | 2015-04-17 | 2019-02-26 | Enduralock, Llc | Locking fastener with deflectable lock |
CA2981885C (en) | 2015-04-17 | 2023-09-26 | Enduralock, Llc | Locking fastener with deflectable lock |
US10801540B2 (en) | 2015-04-17 | 2020-10-13 | Enduralock, Llc | Locking mechanisms with deflectable lock member |
US9913727B2 (en) | 2015-07-02 | 2018-03-13 | Medos International Sarl | Expandable implant |
CA3033078A1 (en) | 2015-09-08 | 2017-03-16 | Enduralock, Llc | Locking mechanisms with deflectable washer members |
EP3349695B1 (en) | 2015-09-18 | 2020-11-18 | K2M, Inc. | Corpectomy device |
GB2557840B (en) | 2015-09-18 | 2021-07-21 | Smith & Nephew Inc | Bone plate |
US10857003B1 (en) | 2015-10-14 | 2020-12-08 | Samy Abdou | Devices and methods for vertebral stabilization |
WO2018002715A2 (en) | 2016-06-28 | 2018-01-04 | Eit Emerging Implant Technologies Gmbh | Expandable and angularly adjustable articulating intervertebral cages |
WO2018002711A2 (en) | 2016-06-28 | 2018-01-04 | Eit Emerging Implant Technologies Gmbh | Expandable, angularly adjustable intervertebral cages |
US10973648B1 (en) | 2016-10-25 | 2021-04-13 | Samy Abdou | Devices and methods for vertebral bone realignment |
US10744000B1 (en) | 2016-10-25 | 2020-08-18 | Samy Abdou | Devices and methods for vertebral bone realignment |
US10537436B2 (en) | 2016-11-01 | 2020-01-21 | DePuy Synthes Products, Inc. | Curved expandable cage |
US10888433B2 (en) | 2016-12-14 | 2021-01-12 | DePuy Synthes Products, Inc. | Intervertebral implant inserter and related methods |
US10398563B2 (en) | 2017-05-08 | 2019-09-03 | Medos International Sarl | Expandable cage |
US11344424B2 (en) | 2017-06-14 | 2022-05-31 | Medos International Sarl | Expandable intervertebral implant and related methods |
US10940016B2 (en) | 2017-07-05 | 2021-03-09 | Medos International Sarl | Expandable intervertebral fusion cage |
US10507043B1 (en) | 2017-10-11 | 2019-12-17 | Seaspine Orthopedics Corporation | Collet for a polyaxial screw assembly |
US10888363B2 (en) | 2017-12-06 | 2021-01-12 | Stout Medical Group, L.P. | Attachment device and method for use |
US11039865B2 (en) | 2018-03-02 | 2021-06-22 | Stryker European Operations Limited | Bone plates and associated screws |
US11179248B2 (en) | 2018-10-02 | 2021-11-23 | Samy Abdou | Devices and methods for spinal implantation |
US11272968B2 (en) * | 2018-10-03 | 2022-03-15 | DePuy Synthes Products, Inc. | Slotted periprosthetic plate for variable angle holes |
US11446156B2 (en) | 2018-10-25 | 2022-09-20 | Medos International Sarl | Expandable intervertebral implant, inserter instrument, and related methods |
USD921479S1 (en) | 2018-11-27 | 2021-06-08 | International Life Sciences LLC | Eyelet interference screw |
US11111950B2 (en) | 2019-04-01 | 2021-09-07 | Enduralock, Llc | Locking mechanisms with deflectable lock member |
WO2021127251A1 (en) | 2019-12-17 | 2021-06-24 | Jackson Roger P | Bone anchor assembly with closed ring retainer and internal snap ring |
US11426286B2 (en) | 2020-03-06 | 2022-08-30 | Eit Emerging Implant Technologies Gmbh | Expandable intervertebral implant |
US11850160B2 (en) | 2021-03-26 | 2023-12-26 | Medos International Sarl | Expandable lordotic intervertebral fusion cage |
US11752009B2 (en) | 2021-04-06 | 2023-09-12 | Medos International Sarl | Expandable intervertebral fusion cage |
US11751915B2 (en) | 2021-07-09 | 2023-09-12 | Roger P. Jackson | Modular spinal fixation system with bottom-loaded universal shank heads |
Family Cites Families (90)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4463753A (en) * | 1980-01-04 | 1984-08-07 | Gustilo Ramon B | Compression bone screw |
CH648197A5 (en) * | 1980-05-28 | 1985-03-15 | Synthes Ag | IMPLANT AND SCREW FASTENING ON ITS BONE. |
US4696290A (en) * | 1983-12-16 | 1987-09-29 | Acromed Corporation | Apparatus for straightening spinal columns |
US4790297A (en) * | 1987-07-24 | 1988-12-13 | Biotechnology, Inc. | Spinal fixation method and system |
US5484437A (en) * | 1988-06-13 | 1996-01-16 | Michelson; Gary K. | Apparatus and method of inserting spinal implants |
DE3942326A1 (en) * | 1989-12-21 | 1991-06-27 | Haerle Anton | SCREW AS AN OSTEOSYNTHESIS TOOL |
US5290288A (en) * | 1990-02-08 | 1994-03-01 | Vignaud Jean Louis | Multi-function device for the osteosynthesis of rachis |
US5486176A (en) * | 1991-03-27 | 1996-01-23 | Smith & Nephew Richards, Inc. | Angled bone fixation apparatus |
US5129899A (en) * | 1991-03-27 | 1992-07-14 | Smith & Nephew Richards Inc. | Bone fixation apparatus |
DE9104025U1 (en) * | 1991-04-03 | 1992-07-30 | Waldemar Link Gmbh & Co, 2000 Hamburg, De | |
PT100685A (en) * | 1991-07-15 | 1994-05-31 | Danek Group Inc | SPINAL FIXING SYSTEM |
US5209751A (en) * | 1992-02-19 | 1993-05-11 | Danek Medical, Inc. | Spinal fixation system |
US5171279A (en) * | 1992-03-17 | 1992-12-15 | Danek Medical | Method for subcutaneous suprafascial pedicular internal fixation |
US6022443A (en) * | 1994-01-25 | 2000-02-08 | Kimberly-Clark Worldwide, Inc. | Method and apparatus for placing discrete parts onto a moving web |
SE9402130D0 (en) * | 1994-06-17 | 1994-06-17 | Sven Olerud | Device and method for plate fixation of legs |
US5556687A (en) * | 1994-10-14 | 1996-09-17 | Acromed Corporation | Composite structure suitable for use as a bone plate and method for making said structure |
US5620443A (en) * | 1995-01-25 | 1997-04-15 | Danek Medical, Inc. | Anterior screw-rod connector |
US5669911A (en) | 1995-04-13 | 1997-09-23 | Fastenetix, L.L.C. | Polyaxial pedicle screw |
US5882350A (en) * | 1995-04-13 | 1999-03-16 | Fastenetix, Llc | Polyaxial pedicle screw having a threaded and tapered compression locking mechanism |
US5520690A (en) * | 1995-04-13 | 1996-05-28 | Errico; Joseph P. | Anterior spinal polyaxial locking screw plate assembly |
US6780186B2 (en) * | 1995-04-13 | 2004-08-24 | Third Millennium Engineering Llc | Anterior cervical plate having polyaxial locking screws and sliding coupling elements |
US5728127A (en) * | 1995-06-27 | 1998-03-17 | Acro Med Corporation | Apparatus for maintaining vertebrae of a spinal column in a desired spatial relationship |
WO1997001991A1 (en) * | 1995-07-03 | 1997-01-23 | Synthes Ag Chur | Bone fragment-fixing device |
CA2199462C (en) * | 1996-03-14 | 2006-01-03 | Charles J. Winslow | Method and instrumentation for implant insertion |
JP2000511788A (en) * | 1996-03-22 | 2000-09-12 | エスディージーアイ・ホールディングス・インコーポレーテッド | Percutaneous surgical device and method |
US5792044A (en) * | 1996-03-22 | 1998-08-11 | Danek Medical, Inc. | Devices and methods for percutaneous surgery |
FR2748387B1 (en) * | 1996-05-13 | 1998-10-30 | Stryker France Sa | BONE FIXATION DEVICE, IN PARTICULAR TO THE SACRUM, IN OSTEOSYNTHESIS OF THE SPINE |
US5800433A (en) * | 1996-05-31 | 1998-09-01 | Acromed Corporation | Spinal column retaining apparatus |
US5879350A (en) * | 1996-09-24 | 1999-03-09 | Sdgi Holdings, Inc. | Multi-axial bone screw assembly |
US5885286A (en) * | 1996-09-24 | 1999-03-23 | Sdgi Holdings, Inc. | Multi-axial bone screw assembly |
US5797911A (en) * | 1996-09-24 | 1998-08-25 | Sdgi Holdings, Inc. | Multi-axial bone screw assembly |
US5964760A (en) * | 1996-10-18 | 1999-10-12 | Spinal Innovations | Spinal implant fixation assembly |
US5863293A (en) * | 1996-10-18 | 1999-01-26 | Spinal Innovations | Spinal implant fixation assembly |
US6171311B1 (en) * | 1996-10-18 | 2001-01-09 | Marc Richelsoph | Transverse connector |
TW375522B (en) * | 1996-10-24 | 1999-12-01 | Danek Medical Inc | Devices for percutaneous surgery under direct visualization and through an elongated cannula |
US5728098A (en) * | 1996-11-07 | 1998-03-17 | Sdgi Holdings, Inc. | Multi-angle bone screw assembly using shape-memory technology |
CN1142746C (en) * | 1996-12-12 | 2004-03-24 | 库尔斯恩蒂斯股份公司 | Device for connecting longitudinal support to pedicle screw |
US6712819B2 (en) * | 1998-10-20 | 2004-03-30 | St. Francis Medical Technologies, Inc. | Mating insertion instruments for spinal implants and methods of use |
US5749916A (en) * | 1997-01-21 | 1998-05-12 | Spinal Innovations | Fusion implant |
DE69837626T2 (en) * | 1997-02-11 | 2007-12-20 | Warsaw Orthopedic, Inc., Warsaw | Plate with locking mechanism for the anterior cervical spine |
DE19708703C2 (en) * | 1997-02-24 | 2002-01-24 | Co Don Ag | Surgical cutlery |
DE29710484U1 (en) * | 1997-06-16 | 1998-10-15 | Howmedica Gmbh | Receiving part for a holding component of a spinal implant |
US5954722A (en) * | 1997-07-29 | 1999-09-21 | Depuy Acromed, Inc. | Polyaxial locking plate |
US6030389A (en) * | 1997-08-04 | 2000-02-29 | Spinal Concepts, Inc. | System and method for stabilizing the human spine with a bone plate |
US6197033B1 (en) * | 1998-04-09 | 2001-03-06 | Sdgi Holdings, Inc. | Guide sleeve for offset vertebrae |
US6533786B1 (en) * | 1999-10-13 | 2003-03-18 | Sdgi Holdings, Inc. | Anterior cervical plating system |
US6565565B1 (en) * | 1998-06-17 | 2003-05-20 | Howmedica Osteonics Corp. | Device for securing spinal rods |
US6530926B1 (en) * | 2000-08-01 | 2003-03-11 | Endius Incorporated | Method of securing vertebrae |
US6074423A (en) * | 1998-11-02 | 2000-06-13 | Lawson; Kevin Jon | Safer more X-ray transparent spinal implant |
DE19851370C2 (en) * | 1998-11-07 | 2000-09-21 | Aesculap Ag & Co Kg | Endoscopic insertion instruments |
US6146386A (en) * | 1999-02-04 | 2000-11-14 | Sdgi Holdings, Inc. | Cable operated bone anchor compressor |
US6159179A (en) * | 1999-03-12 | 2000-12-12 | Simonson; Robert E. | Cannula and sizing and insertion method |
US6280445B1 (en) * | 1999-04-16 | 2001-08-28 | Sdgi Holdings, Inc. | Multi-axial bone anchor system |
US6261291B1 (en) * | 1999-07-08 | 2001-07-17 | David J. Talaber | Orthopedic implant assembly |
US6200322B1 (en) * | 1999-08-13 | 2001-03-13 | Sdgi Holdings, Inc. | Minimal exposure posterior spinal interbody instrumentation and technique |
US6280442B1 (en) * | 1999-09-01 | 2001-08-28 | Sdgi Holdings, Inc. | Multi-axial bone screw assembly |
JP4326134B2 (en) * | 1999-10-20 | 2009-09-02 | ウォーソー・オーソペディック・インコーポレーテッド | Method and apparatus for performing a surgical procedure |
US6530929B1 (en) * | 1999-10-20 | 2003-03-11 | Sdgi Holdings, Inc. | Instruments for stabilization of bony structures |
US6287313B1 (en) * | 1999-11-23 | 2001-09-11 | Sdgi Holdings, Inc. | Screw delivery system and method |
US6328738B1 (en) * | 1999-11-24 | 2001-12-11 | Loubert Suddaby | Anterior cervical fusion compression plate and screw guide |
US6331179B1 (en) * | 2000-01-06 | 2001-12-18 | Spinal Concepts, Inc. | System and method for stabilizing the human spine with a bone plate |
DE10005385A1 (en) * | 2000-02-07 | 2001-08-09 | Ulrich Gmbh & Co Kg | Pedicle screw |
US6610062B2 (en) * | 2000-02-16 | 2003-08-26 | Ebi, L.P. | Method and system for spinal fixation |
US6514260B1 (en) * | 2000-03-15 | 2003-02-04 | Sdgi Holdings, Inc. | Methods and instruments for laparoscopic spinal surgery |
CA2444060C (en) * | 2000-04-10 | 2008-03-11 | Synthes (U.S.A.) | Osteosynthetic anchoring element |
US6235033B1 (en) * | 2000-04-19 | 2001-05-22 | Synthes (Usa) | Bone fixation assembly |
US6645207B2 (en) * | 2000-05-08 | 2003-11-11 | Robert A. Dixon | Method and apparatus for dynamized spinal stabilization |
FR2810532B1 (en) * | 2000-06-26 | 2003-05-30 | Stryker Spine Sa | BONE IMPLANT WITH ANNULAR LOCKING MEANS |
US6451021B1 (en) * | 2001-02-15 | 2002-09-17 | Third Millennium Engineering, Llc | Polyaxial pedicle screw having a rotating locking element |
US6402756B1 (en) * | 2001-02-15 | 2002-06-11 | Third Millennium Engineering, Llc | Longitudinal plate assembly having an adjustable length |
US6666867B2 (en) * | 2001-02-15 | 2003-12-23 | Fast Enetix, Llc | Longitudinal plate assembly having an adjustable length |
US6641583B2 (en) * | 2001-03-29 | 2003-11-04 | Endius Incorporated | Apparatus for retaining bone portions in a desired spatial relationship |
US6599290B2 (en) * | 2001-04-17 | 2003-07-29 | Ebi, L.P. | Anterior cervical plating system and associated method |
EP1404225A4 (en) * | 2001-06-04 | 2009-09-16 | Warsaw Orthopedic Inc | Anterior cervical plate system having vertebral body engaging anchors, connecting plate, and method for installation thereof |
US6682534B2 (en) * | 2001-08-02 | 2004-01-27 | Depuy Acromed, Inc. | Endplate preparation instrument and associated method |
US6884241B2 (en) * | 2001-09-04 | 2005-04-26 | Orthotec, Llc | Spinal assembly plate |
US6623485B2 (en) * | 2001-10-17 | 2003-09-23 | Hammill Manufacturing Company | Split ring bone screw for a spinal fixation system |
US6695772B1 (en) * | 2001-11-26 | 2004-02-24 | Visionary Biomedical, Inc. | Small diameter cannula devices, systems and methods |
US6641586B2 (en) * | 2002-02-01 | 2003-11-04 | Depuy Acromed, Inc. | Closure system for spinal fixation instrumentation |
US7303564B2 (en) * | 2002-02-01 | 2007-12-04 | Spinal Concepts, Inc. | Spinal plate extender system and method |
US7232441B2 (en) * | 2002-02-13 | 2007-06-19 | Cross Medicalproducts, Inc. | Occipital plate and rod system |
US6695846B2 (en) * | 2002-03-12 | 2004-02-24 | Spinal Innovations, Llc | Bone plate and screw retaining mechanism |
US7572276B2 (en) * | 2002-05-06 | 2009-08-11 | Warsaw Orthopedic, Inc. | Minimally invasive instruments and methods for inserting implants |
US6733502B2 (en) * | 2002-05-15 | 2004-05-11 | Cross Medical Products, Inc. | Variable locking spinal screw having a knurled collar |
US7306603B2 (en) * | 2002-08-21 | 2007-12-11 | Innovative Spinal Technologies | Device and method for percutaneous placement of lumbar pedicle screws and connecting rods |
US7476228B2 (en) * | 2002-10-11 | 2009-01-13 | Abdou M Samy | Distraction screw for skeletal surgery and method of use |
JP2006503667A (en) * | 2002-10-28 | 2006-02-02 | ブラックストーン メディカル,インコーポレーテッド | Bone plate assembly with screw locking mechanism |
US7914561B2 (en) * | 2002-12-31 | 2011-03-29 | Depuy Spine, Inc. | Resilient bone plate and screw system allowing bi-directional assembly |
US7608096B2 (en) * | 2003-03-10 | 2009-10-27 | Warsaw Orthopedic, Inc. | Posterior pedicle screw and plate system and methods |
US6945974B2 (en) * | 2003-07-07 | 2005-09-20 | Aesculap Inc. | Spinal stabilization implant and method of application |
-
2003
- 2003-12-09 US US10/731,625 patent/US6945975B2/en not_active Expired - Lifetime
-
2004
- 2004-03-31 US US10/815,160 patent/US6979334B2/en not_active Expired - Lifetime
- 2004-10-06 AU AU2004305481A patent/AU2004305481B2/en not_active Ceased
- 2004-10-06 BR BRPI0417500A patent/BRPI0417500B1/en not_active IP Right Cessation
- 2004-10-06 JP JP2006541150A patent/JP4456607B2/en not_active Expired - Fee Related
- 2004-10-06 CA CA2548504A patent/CA2548504C/en not_active Expired - Fee Related
- 2004-10-06 WO PCT/US2004/032798 patent/WO2005060845A1/en active Application Filing
- 2004-10-06 ES ES04785377T patent/ES2404031T3/en active Active
- 2004-10-06 CN CNB2004800365575A patent/CN100435743C/en not_active Expired - Fee Related
- 2004-10-06 EP EP04785377A patent/EP1691699B1/en not_active Not-in-force
-
2005
- 2005-07-21 US US11/186,498 patent/US20050267474A1/en not_active Abandoned
- 2005-09-20 US US11/230,431 patent/US20060015104A1/en not_active Abandoned
-
2007
- 2007-05-29 HK HK07105619.3A patent/HK1099504A1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JP2007512085A (en) | 2007-05-17 |
BRPI0417500B1 (en) | 2015-12-22 |
HK1099504A1 (en) | 2007-08-17 |
WO2005060845A8 (en) | 2005-11-03 |
CN100435743C (en) | 2008-11-26 |
EP1691699B1 (en) | 2012-12-26 |
US20060015104A1 (en) | 2006-01-19 |
US20050267474A1 (en) | 2005-12-01 |
US20050010218A1 (en) | 2005-01-13 |
WO2005060845A1 (en) | 2005-07-07 |
US20050010219A1 (en) | 2005-01-13 |
CA2548504A1 (en) | 2005-07-07 |
US6945975B2 (en) | 2005-09-20 |
US6979334B2 (en) | 2005-12-27 |
EP1691699A1 (en) | 2006-08-23 |
JP4456607B2 (en) | 2010-04-28 |
EP1691699A4 (en) | 2010-07-07 |
AU2004305481A1 (en) | 2005-07-07 |
AU2004305481B2 (en) | 2010-04-22 |
ES2404031T3 (en) | 2013-05-23 |
BRPI0417500A (en) | 2007-06-05 |
CN1889891A (en) | 2007-01-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2548504C (en) | Bone fixation assembly and method of securement | |
US20220313326A1 (en) | Spinal fixation tool set and method | |
JP4584876B2 (en) | Fixing assembly | |
CA2321803C (en) | Slotted head pedicle screw assembly | |
US7854751B2 (en) | Percutaneous access devices and bone anchor assemblies | |
US8172847B2 (en) | In-line rod reduction device and methods | |
US20060200128A1 (en) | Bone anchor | |
EP2339975B1 (en) | Polyaxial bottom-loading screw and rod assembly | |
US7226453B2 (en) | Instrument for inserting, adjusting and removing pedicle screws and other orthopedic implants | |
US20020029040A1 (en) | Multi-axial bone anchor system | |
JP2003526444A (en) | Polyaxial bone anchor system | |
JP2009512512A (en) | Bottom-loading multi-axis screw assembly | |
US7909834B2 (en) | Self retaining set screw inserter | |
US11103285B2 (en) | Pedicle screw assembly for dynamic and static fixation and installation tool therefor |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20181009 |