US20120078309A1 - Modular vertebral stabilizer - Google Patents
Modular vertebral stabilizer Download PDFInfo
- Publication number
- US20120078309A1 US20120078309A1 US13/132,732 US200913132732A US2012078309A1 US 20120078309 A1 US20120078309 A1 US 20120078309A1 US 200913132732 A US200913132732 A US 200913132732A US 2012078309 A1 US2012078309 A1 US 2012078309A1
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- United States
- Prior art keywords
- fork
- shaped
- pedicle screw
- stabilizer device
- rod
- 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.)
- Abandoned
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- 239000003381 stabilizer Substances 0.000 title claims abstract description 42
- 230000013011 mating Effects 0.000 claims description 13
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 2
- 230000014759 maintenance of location Effects 0.000 claims 2
- 230000003068 static effect Effects 0.000 description 4
- 230000000087 stabilizing effect Effects 0.000 description 3
- 230000000670 limiting effect Effects 0.000 description 2
- 230000007170 pathology Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 208000037873 arthrodesis Diseases 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
Images
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
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7002—Longitudinal elements, e.g. rods
- A61B17/7004—Longitudinal elements, e.g. rods with a cross-section which varies along its length
- A61B17/7007—Parts of the longitudinal elements, e.g. their ends, being specially adapted to fit around the screw or hook heads
-
- 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
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7002—Longitudinal elements, e.g. rods
-
- 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
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7002—Longitudinal elements, e.g. rods
- A61B17/7019—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other
- A61B17/7031—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other made wholly or partly of flexible material
Definitions
- the present invention relates to a modular vertebral stabilizer. More particularly, the invention relates to a modular vertebral stabilizer that is adapted to mutually connect at least two adjacent vertebrae by using at least two connecting elements which can prevent or allow some certain limited movement to the vertebrae.
- Vertebral stabilization devices of the static and dynamic types have a screw that is adapted to be connected to a vertebra and rigid elements or elements that have a limited mobility, which have two ends which are jointly connected to the two screws connected to two adjacent vertebrae.
- a dynamic stabilizing device i.e., capable of allowing relative movement between the vertebrae
- This vertebral stabilizer comprises a spacing body, which is resistant to compression and is adapted to transfer forces between two screws implanted in the respective vertebrae, and a tensioning cord, which is connected between the two screws described above and passes in an internal longitudinal cavity obtained in the spacing body.
- this stabilizer has a drawback, due to the fact that it is directly assembled locally on the spinal column after inserting the screws in the vertebrae, with open surgery in a space that is close to the vertebra. Therefore, the surgical procedure that allows to use such stabilization structure is highly invasive, since it is necessary to create close to the vertebra enough space to perform the various steps of assembly, with considerable difficulty for the surgeon, who must arrange and assemble each individual element directly on the vertebra.
- the stabilizer described above does not allow a transverse connection between screws mounted on different vertebrae in order to transmit forces in a diagonal direction with respect to the axis of the spinal column.
- tensioning cord must be threaded in the spacing body, and this require a higher skill effort for the surgeon.
- the surgeon may need a stabilizer that has both static and dynamic portions, i.e., he may have to create a hybrid stabilizer, in which the portions can be chosen by the surgeon according to the characteristics of the pathology.
- WO2007/060534 A2 in the name of this same Applicant as the present invention, discloses a vertebral stabilizer of the dynamic modular type, which is adapted to be assembled separately from the spinal column and then fitted onto the spinal column in a few seconds.
- the known type of stabilizer device is unable to adapt to angle variations with which the pedicle screws might be fitted within the vertebrae, and therefore, if the positioning of such pedicle screws is not performed, in two adjacent vertebrae, with the same angle, the surgeon encounters difficulties in fitting the stabilizer device fitted over the head of the pedicle screws.
- the aim of the present invention is to provide a device for stabilizing the spinal column which allows connection between adjacent vertebrae, allowing different angles between pedicle screws inserted in adjacent vertebrae.
- an object of the present invention is to provide a stabilizer device that can be assembled separately from the spinal column and then fitted onto the spinal column with reduced invasiveness for the patient.
- Another object of the present invention is to provide a spinal column stabilizer device that is modular, allowing therefore to provide a hybrid stabilizer device, i.e., a device that is static at one end and dynamic at the opposite end.
- Another object of the present invention is to provide a stabilizer device that is highly reliable, relatively simple to provide and at competitive costs.
- a stabilizer device for the spinal column comprising a first body and a second body adapted to be mutually connected by a rod-like element, said first and second bodies being adapted to be fitted around first and second pedicle screws, which are adapted to be inserted in turn in two mutually adjacent vertebrae, said first and second bodies being fixable on said pedicle screws, characterized in that said first and second bodies are fork-shaped and adapted to accommodate locking means, said locking means being adapted to pass from a position for accommodating said pedicle screw to a position for locking said pedicle screw within said fork-shaped body.
- FIG. 1 is an exploded perspective view of a stabilizer device according to the present invention
- FIG. 2 is a top plan view of the stabilizer device according to the present invention, in a first embodiment, in an unassembled configuration around a pedicle screw;
- FIG. 3 is a top plan view of the stabilizer device according to the present invention, in the first embodiment, in an assembled configuration around the pedicle screw;
- FIG. 4 is a top plan view of the stabilizer device according to the present invention, in a second embodiment, in an unassembled configuration around the pedicle screw;
- FIG. 5 is a top plan view of the stabilizer device according to the present invention, in the second embodiment, in an assembled configuration around the pedicle screw.
- a stabilizer device generally designated by the reference numeral 1 , comprises a fork-shaped body 2 , which is adapted to engage a pedicle screw 3 designed to be inserted in a vertebra.
- the fork-shaped body 2 is provided with a portion 4 which blends with the circular portion that forms the fork, the portion 4 having a seat that is adapted to accommodate a rod-like element 5 .
- the portion 4 has at least one hole 6 that is adapted to allow the insertion of stabilizing means, which are conveniently constituted for example by a cord 7 which is connected to a second fork-shaped body 2 arranged at the opposite end of the rod-like element 5 .
- the stabilizer device according to the invention has first and second fork-shaped bodies 2 , which are adapted to be connected by the rod-like element 5 and to engage respectively two pedicle screws 3 arranged respectively in two adjacent vertebrae which are adapted to be mutually stabilized.
- the pedicle screws are conveniently headless and cannulated, so that they can be screwed into the vertebrae.
- the rod-like element 5 is provided with a pair of mutually opposite lateral recesses 8 , which are adapted to accommodate the cord 7 which must be fastened around the rod-like element 5 .
- the two ends of the cord 7 are provided with respective engagement means 9 , which are adapted to allow tensioning of the cord 7 .
- the engagement means 9 can be provided for example with one end of the cord provided with a set of teeth and the opposite end provided with a receptacle, like a hose clamp.
- the surgeon can perform, separately from the spinal column, a fastening of the cord 7 around the rod-like element 5 and then, once the stabilizer device has been assembled, said device can be fitted around the pedicle screws 3 that are already accommodated in the holes provided in the vertebrae to be coupled in a stabilized manner.
- the rod-like element 5 can be of the rigid type, in which case the presence of the cord 7 is not necessary, or of the elastic type, with which the cord 7 is therefore associated.
- the fork-shaped body 2 is provided in such a manner as to mate with a corresponding fork-shaped body 2 that is arranged in a diametrically opposite position with respect to the pedicle screw 3 .
- the mating of the two fork-shaped bodies provides a complete disk-like element, which surrounds the pedicle screw 3 completely.
- the body 2 of the second embodiment has a semicircular internal contour, which is adapted to surround half of the pedicle screw 3 , the other half of the screw being surrounded by the corresponding fork-shaped body 2 arranged diametrically opposite the first body.
- a hybrid modular stabilizer device i.e., a device that is partially static and partially dynamic, depending on whether the rod-like element 5 is of the rigid or elastic type.
- the mating of two fork-shaped bodies 2 arranged mutually opposite with respect to the pedicle screw 3 occurs by way of the presence of mating means 15 and 16 provided at each end of the fork.
- the mating means 15 are constituted for example by a protruding pin provided with a tooth 18 , while the mating means 16 have a seat that is adapted to accommodate the pin 15 and the corresponding tooth 18 .
- Each fork-shaped body therefore has a mating means 15 and a mating means 16 which are adapted to mate complementarily with similar means on the opposite fork-shaped body 2 .
- the stabilizer device according to the invention assembled away from the spinal column, is then inserted under the skin of the patient so that the distal fork-shaped body 2 engages the distal pedicle screw 3 and then the proximal fork-shaped body 2 fits on the pedicle screw 3 .
- locking of the fork-shaped body 2 is provided by way of locking means, such as for example an open annular element 20 , which is C-shaped and inserted within the U-shaped portion of the fork-shaped body 2 .
- Such annular element is adapted to rotate freely within said U-shaped portion, so that it can be turned around the pedicle screw 3 , as shown in FIGS. 3 , so as to lock the fork-shaped body 2 around the pedicle screw 3 .
- the rotation of the annular element 20 can be performed thanks to the presence of a pair of holes 21 arranged at the face of the fork-shaped body 2 , which allows the insertion of a tool that allows to turn the annular element 20 .
- the stabilizer device according to the present invention fully achieves the intended aim and objects, since it allows to be assembled away from the spinal column, allows to adapt to different implantation angles of the pedicle screws within the vertebrae, and allows to provide hybrid structures with rigid portions and elastic portions.
- the materials used may be any according to requirements and to the state of the art.
Abstract
A stabilizer device for the spinal column, comprising a first body (2) and a second body (2) adapted to be mutually connected by a rod-like element (5), the first and second bodies (2) being adapted to be fitted around first and second pedicle screws (3), which are adapted to be inserted in turn in two mutually adjacent vertebrae, the first and second bodies (2) being fixable on the pedicle screws (3), the first and second bodies (2) being fork-shaped and adapted to accommodate locking means (20), the locking means (20) being adapted to pass from a position for accommodating the pedicle screw (3) to a position for locking the pedicle screw (3) within the fork-shaped body (2).
Description
- The present invention relates to a modular vertebral stabilizer. More particularly, the invention relates to a modular vertebral stabilizer that is adapted to mutually connect at least two adjacent vertebrae by using at least two connecting elements which can prevent or allow some certain limited movement to the vertebrae.
- As is known, many pathologies related to the functionality of the spinal column are treated by total or partial immobilization, particularly with a technique known as intervertebral arthrodesis, with the aid of connection means and/or with the addition of portions of bone tissue which join such adjacent vertebrae.
- Vertebral stabilization devices of the static and dynamic types are known in the art and have a screw that is adapted to be connected to a vertebra and rigid elements or elements that have a limited mobility, which have two ends which are jointly connected to the two screws connected to two adjacent vertebrae.
- In particular, a dynamic stabilizing device, i.e., capable of allowing relative movement between the vertebrae, is disclosed in EP 0 669 109. This vertebral stabilizer comprises a spacing body, which is resistant to compression and is adapted to transfer forces between two screws implanted in the respective vertebrae, and a tensioning cord, which is connected between the two screws described above and passes in an internal longitudinal cavity obtained in the spacing body.
- However, this stabilizer has a drawback, due to the fact that it is directly assembled locally on the spinal column after inserting the screws in the vertebrae, with open surgery in a space that is close to the vertebra. Therefore, the surgical procedure that allows to use such stabilization structure is highly invasive, since it is necessary to create close to the vertebra enough space to perform the various steps of assembly, with considerable difficulty for the surgeon, who must arrange and assemble each individual element directly on the vertebra.
- Moreover, the stabilizer described above does not allow a transverse connection between screws mounted on different vertebrae in order to transmit forces in a diagonal direction with respect to the axis of the spinal column.
- Further, the tensioning cord must be threaded in the spacing body, and this require a higher skill effort for the surgeon.
- Moreover, the surgeon may need a stabilizer that has both static and dynamic portions, i.e., he may have to create a hybrid stabilizer, in which the portions can be chosen by the surgeon according to the characteristics of the pathology.
- Known types of stabilizer do not allow to create a stabilizer of the hybrid type.
- WO2007/060534 A2 in the name of this same Applicant as the present invention, discloses a vertebral stabilizer of the dynamic modular type, which is adapted to be assembled separately from the spinal column and then fitted onto the spinal column in a few seconds.
- However, the known type of stabilizer device is unable to adapt to angle variations with which the pedicle screws might be fitted within the vertebrae, and therefore, if the positioning of such pedicle screws is not performed, in two adjacent vertebrae, with the same angle, the surgeon encounters difficulties in fitting the stabilizer device fitted over the head of the pedicle screws.
- The aim of the present invention is to provide a device for stabilizing the spinal column which allows connection between adjacent vertebrae, allowing different angles between pedicle screws inserted in adjacent vertebrae.
- Within this aim, an object of the present invention is to provide a stabilizer device that can be assembled separately from the spinal column and then fitted onto the spinal column with reduced invasiveness for the patient.
- Another object of the present invention is to provide a spinal column stabilizer device that is modular, allowing therefore to provide a hybrid stabilizer device, i.e., a device that is static at one end and dynamic at the opposite end.
- Another object of the present invention is to provide a stabilizer device that is highly reliable, relatively simple to provide and at competitive costs.
- This aim and these and other objects that will become better apparent hereinafter are achieved by a stabilizer device for the spinal column, comprising a first body and a second body adapted to be mutually connected by a rod-like element, said first and second bodies being adapted to be fitted around first and second pedicle screws, which are adapted to be inserted in turn in two mutually adjacent vertebrae, said first and second bodies being fixable on said pedicle screws, characterized in that said first and second bodies are fork-shaped and adapted to accommodate locking means, said locking means being adapted to pass from a position for accommodating said pedicle screw to a position for locking said pedicle screw within said fork-shaped body.
- Further characteristics and advantages of the invention will become better apparent from the following detailed description of some preferred but not exclusive embodiments of the device according to the present invention, illustrated by way of non-limiting example in the accompanying drawings, wherein:
-
FIG. 1 is an exploded perspective view of a stabilizer device according to the present invention; -
FIG. 2 is a top plan view of the stabilizer device according to the present invention, in a first embodiment, in an unassembled configuration around a pedicle screw; -
FIG. 3 is a top plan view of the stabilizer device according to the present invention, in the first embodiment, in an assembled configuration around the pedicle screw; -
FIG. 4 is a top plan view of the stabilizer device according to the present invention, in a second embodiment, in an unassembled configuration around the pedicle screw; -
FIG. 5 is a top plan view of the stabilizer device according to the present invention, in the second embodiment, in an assembled configuration around the pedicle screw. - With reference to the figures, a stabilizer device according to the present invention, generally designated by the reference numeral 1, comprises a fork-
shaped body 2, which is adapted to engage apedicle screw 3 designed to be inserted in a vertebra. - The fork-
shaped body 2 is provided with aportion 4 which blends with the circular portion that forms the fork, theportion 4 having a seat that is adapted to accommodate a rod-like element 5. - Conveniently, the
portion 4 has at least one hole 6 that is adapted to allow the insertion of stabilizing means, which are conveniently constituted for example by a cord 7 which is connected to a second fork-shaped body 2 arranged at the opposite end of the rod-like element 5. - Substantially, the stabilizer device according to the invention has first and second fork-
shaped bodies 2, which are adapted to be connected by the rod-like element 5 and to engage respectively twopedicle screws 3 arranged respectively in two adjacent vertebrae which are adapted to be mutually stabilized. - The pedicle screws are conveniently headless and cannulated, so that they can be screwed into the vertebrae.
- Conveniently, the rod-
like element 5 is provided with a pair of mutually opposite lateral recesses 8, which are adapted to accommodate the cord 7 which must be fastened around the rod-like element 5. - Conveniently, the two ends of the cord 7 are provided with respective engagement means 9, which are adapted to allow tensioning of the cord 7.
- Conveniently, the engagement means 9 can be provided for example with one end of the cord provided with a set of teeth and the opposite end provided with a receptacle, like a hose clamp.
- In this manner, the surgeon can perform, separately from the spinal column, a fastening of the cord 7 around the rod-
like element 5 and then, once the stabilizer device has been assembled, said device can be fitted around thepedicle screws 3 that are already accommodated in the holes provided in the vertebrae to be coupled in a stabilized manner. - Conveniently, the rod-
like element 5 can be of the rigid type, in which case the presence of the cord 7 is not necessary, or of the elastic type, with which the cord 7 is therefore associated. - In a second embodiment of the device according to the invention, shown in
FIGS. 4 and 5 , the fork-shaped body 2 is provided in such a manner as to mate with a corresponding fork-shaped body 2 that is arranged in a diametrically opposite position with respect to thepedicle screw 3. In this case, the mating of the two fork-shaped bodies provides a complete disk-like element, which surrounds thepedicle screw 3 completely. - Therefore, differently from the first embodiment, in which the fork-
shaped body 2 has a substantially U-shaped internal contour, thebody 2 of the second embodiment has a semicircular internal contour, which is adapted to surround half of thepedicle screw 3, the other half of the screw being surrounded by the corresponding fork-shaped body 2 arranged diametrically opposite the first body. - In this manner it is possible to mutually connect more than two adjacent vertebrae and it is also possible to provide a hybrid modular stabilizer device, i.e., a device that is partially static and partially dynamic, depending on whether the rod-
like element 5 is of the rigid or elastic type. - It is in fact possible to connect to each other first and second adjacent vertebrae by using a rigid rod-like element and connect the second vertebra and a third vertebra, which is adjacent to the second vertebra, by using an elastic rod-like element. In this manner a hybrid stabilizer device is obtained.
- Conveniently, the mating of two fork-
shaped bodies 2 arranged mutually opposite with respect to thepedicle screw 3, as shown inFIGS. 4 and 5 , occurs by way of the presence ofmating means - Substantially, the mating means 15 are constituted for example by a protruding pin provided with a tooth 18, while the mating means 16 have a seat that is adapted to accommodate the
pin 15 and the corresponding tooth 18. - Each fork-shaped body therefore has a mating means 15 and a
mating means 16 which are adapted to mate complementarily with similar means on the opposite fork-shaped body 2. - Other mating means are of course possible, so long as they are capable of ensuring a stable mating of the two fork-shaped bodies which are mutually opposite with respect to the
pedicle screw 3. - The stabilizer device according to the invention, assembled away from the spinal column, is then inserted under the skin of the patient so that the distal fork-
shaped body 2 engages thedistal pedicle screw 3 and then the proximal fork-shaped body 2 fits on thepedicle screw 3. - In the first embodiment, locking of the fork-
shaped body 2 is provided by way of locking means, such as for example an openannular element 20, which is C-shaped and inserted within the U-shaped portion of the fork-shaped body 2. - Such annular element is adapted to rotate freely within said U-shaped portion, so that it can be turned around the
pedicle screw 3, as shown inFIGS. 3 , so as to lock the fork-shaped body 2 around thepedicle screw 3. - The rotation of the
annular element 20 can be performed thanks to the presence of a pair ofholes 21 arranged at the face of the fork-shaped body 2, which allows the insertion of a tool that allows to turn theannular element 20. - In practice it has been found that the stabilizer device according to the present invention fully achieves the intended aim and objects, since it allows to be assembled away from the spinal column, allows to adapt to different implantation angles of the pedicle screws within the vertebrae, and allows to provide hybrid structures with rigid portions and elastic portions.
- The stabilizer device thus conceived is susceptible of numerous modifications and variations, all of which are within the scope of the appended claims; all the details may further be replaced with other technically equivalent elements.
- In practice, the materials used, as well as the contingent shapes and dimensions, may be any according to requirements and to the state of the art.
- The disclosures in Italian Patent Application No. MI2008A002240 from which this application claims priority are incorporated herein by reference.
- Where technical features mentioned in any claim are followed by reference signs, those reference signs have been included for the sole purpose of increasing the intelligibility of the claims and accordingly, such reference signs do not have any limiting effect on the interpretation of each element identified by way of example by such reference signs.
Claims (14)
1. A stabilizer device for the spinal column, comprising a first body and a second body adapted to be mutually connected by a rod-like element, said first and second bodies being adapted to be fitted around first and second pedicle screws, which are adapted to be inserted in turn in two mutually adjacent vertebrae said first and second bodies being fixable on said pedicle screws, characterized in that said first and second bodies are forked shaped and adapted to accommodate locking means, said locking means being adapted to pass from a position for accommodating said pedicle screw to a position for locking said pedicle screw within said fork-shaped body.
2. The stabilizer device according to claim 1 , characterized in that said locking means comprise a substantially C-shaped annular element, which is adapted to rotate freely within said fork-shaped body and to pass from a position for accommodating said pedicle screw to a position for locking said pedicle screw when said C-shaped element is rotated about said pedicle screw.
3. The stabilizer device according to claim 1 , characterized in that said first and second fork-shaped bodies have a protruding portion that blends with said body to accommodate said rod-like element.
4. The stabilizer device according to claim 1 , wherein said rod-like element is rigid.
5. The stabilizer device according to claim 1 , wherein said rod-like element is elastic.
6. The stabilizer device according to claim 1 , wherein said rod-like element is provided with a pair of mutually opposite lateral recesses to accommodate a retention cord that is adapted to be gripped around said rod-like element.
7. The stabilizer device according to claim 1 , characterized in that at least one of said first and second fork-shaped bodies is provided with means for mating with a respective similar fork-shaped body.
8. The stabilizer device according to claim 7 , characterized in that said mating means allow to mate two mutually identical fork-shaped bodies around said pedicle screw.
9. The stabilizer device according to claim 1 , characterized in that said fork-shaped body is provided with at least one hole on its upper surface which is adapted to allow the insertion of a tool for the rotation of said C-shaped annular element.
10. The stabilizer device according to claim 1 , characterized in that said protruding portion of said fork-shaped body is provided with at least one hole for the insertion of said cord or of a grub screw that is adapted to lock said rod-like element within said protruding portion.
11. An element for fixing to a pedicle screw, comprising a body adapted to be fitted around said pedicle screw, characterized in that said body is fork-shaped and accommodates locking means which are adapted to pass from a position for accommodating said pedicle screw within said body to a position for locking said pedicle screw within said body.
12. The fixing element according to claim 1 , characterized in that said locking means comprises C-shaped open annular element, which is adapted to rotate within said fork-shaped body and to pass from a position for accommodating said pedicle screw to a position for locking said pedicle screw when said open annular element is locked around said pedicle screw.
13. The fixing element according to claim 11 , characterized in that said fork shaped body is provided with means for mutual mating with a respective similar fork-shaped body, for the mating of said fork-shaped bodies around said pedicle screw.
14. The fixing element according to claim 11 , characterized in that said fork-shaped body contains a protruding portion provided with at least one hole for the passage of a retention cord or of a grub screw that is adapted to lock a rod-like element within said protruding portion.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI2008A002240 | 2008-12-17 | ||
ITMI2008A002240A IT1392298B1 (en) | 2008-12-17 | 2008-12-17 | MODULAR VERTEBRAL STABILIZER. |
PCT/EP2009/067203 WO2010069964A1 (en) | 2008-12-17 | 2009-12-15 | Modular vertebral stabilizer |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2009/067203 A-371-Of-International WO2010069964A1 (en) | 2008-12-17 | 2009-12-15 | Modular vertebral stabilizer |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US14/828,714 Continuation US9827016B2 (en) | 2008-12-17 | 2015-08-18 | Modular vertebral stabilizer |
Publications (1)
Publication Number | Publication Date |
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US20120078309A1 true US20120078309A1 (en) | 2012-03-29 |
Family
ID=41278199
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/132,732 Abandoned US20120078309A1 (en) | 2008-12-17 | 2009-12-15 | Modular vertebral stabilizer |
US14/828,714 Expired - Fee Related US9827016B2 (en) | 2008-12-17 | 2015-08-18 | Modular vertebral stabilizer |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
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US14/828,714 Expired - Fee Related US9827016B2 (en) | 2008-12-17 | 2015-08-18 | Modular vertebral stabilizer |
Country Status (4)
Country | Link |
---|---|
US (2) | US20120078309A1 (en) |
EP (1) | EP2376007B1 (en) |
IT (1) | IT1392298B1 (en) |
WO (1) | WO2010069964A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9827016B2 (en) | 2008-12-17 | 2017-11-28 | Lanx S.R.L. | Modular vertebral stabilizer |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5207678A (en) * | 1989-07-20 | 1993-05-04 | Prufer | Pedicle screw and receiver member therefore |
US5275600A (en) * | 1992-10-05 | 1994-01-04 | Zimmer, Inc. | Telescoping rod to rod coupler for a spinal system |
US6328740B1 (en) * | 1996-10-18 | 2001-12-11 | Spinal Innovations, Llc | Transverse connector |
US20030191469A1 (en) * | 2001-02-15 | 2003-10-09 | Ralph James D. | Polyaxial pedicle screw having a rotating locking element |
US6669697B1 (en) * | 1998-09-25 | 2003-12-30 | Perumala Corporation | Self-retaining bolt for internal spinal stabilizers |
US6902565B2 (en) * | 2001-02-21 | 2005-06-07 | Synthes (U.S.A.) | Occipital plate and system for spinal stabilization |
US6966910B2 (en) * | 2002-04-05 | 2005-11-22 | Stephen Ritland | Dynamic fixation device and method of use |
US20080255619A1 (en) * | 2007-04-10 | 2008-10-16 | Schneiderman Gary A | Posterior spinal fixation with colinear facet screw |
US20090088800A1 (en) * | 2007-08-24 | 2009-04-02 | Spinal Elements, Inc. | Loop rod spinal stablization device |
US20090326588A1 (en) * | 2008-06-27 | 2009-12-31 | Innovasis, Inc. | Cross connector |
US8114133B2 (en) * | 2006-04-18 | 2012-02-14 | Joseph Nicholas Logan | Spinal rod system |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5312405A (en) * | 1992-07-06 | 1994-05-17 | Zimmer, Inc. | Spinal rod coupler |
US6355038B1 (en) | 1998-09-25 | 2002-03-12 | Perumala Corporation | Multi-axis internal spinal fixation |
DE10021109B4 (en) | 2000-05-02 | 2016-11-10 | Infiana Germany Gmbh & Co. Kg | Process for producing a multilayer coextrudate and film structure produced therefrom |
AU2001270720B2 (en) * | 2000-06-30 | 2007-02-08 | Henry Graf | Intervertebral linking device |
EP1954205B1 (en) * | 2005-11-24 | 2019-03-06 | Giuseppe Calvosa | Modular vertebral stabilizer |
US7744632B2 (en) * | 2006-12-20 | 2010-06-29 | Aesculap Implant Systems, Inc. | Rod to rod connector |
US7794478B2 (en) * | 2007-01-15 | 2010-09-14 | Innovative Delta Technology, Llc | Polyaxial cross connector and methods of use thereof |
EP2301456B1 (en) | 2007-02-23 | 2013-04-17 | Biedermann Technologies GmbH & Co. KG | Rod connector for stabilizing vertebrae |
IT1392298B1 (en) | 2008-12-17 | 2012-02-24 | N B R New Biotechnology Res | MODULAR VERTEBRAL STABILIZER. |
-
2008
- 2008-12-17 IT ITMI2008A002240A patent/IT1392298B1/en active
-
2009
- 2009-12-15 WO PCT/EP2009/067203 patent/WO2010069964A1/en active Application Filing
- 2009-12-15 US US13/132,732 patent/US20120078309A1/en not_active Abandoned
- 2009-12-15 EP EP09801433.5A patent/EP2376007B1/en not_active Not-in-force
-
2015
- 2015-08-18 US US14/828,714 patent/US9827016B2/en not_active Expired - Fee Related
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5207678A (en) * | 1989-07-20 | 1993-05-04 | Prufer | Pedicle screw and receiver member therefore |
US5275600A (en) * | 1992-10-05 | 1994-01-04 | Zimmer, Inc. | Telescoping rod to rod coupler for a spinal system |
US6328740B1 (en) * | 1996-10-18 | 2001-12-11 | Spinal Innovations, Llc | Transverse connector |
US6669697B1 (en) * | 1998-09-25 | 2003-12-30 | Perumala Corporation | Self-retaining bolt for internal spinal stabilizers |
US20030191469A1 (en) * | 2001-02-15 | 2003-10-09 | Ralph James D. | Polyaxial pedicle screw having a rotating locking element |
US6902565B2 (en) * | 2001-02-21 | 2005-06-07 | Synthes (U.S.A.) | Occipital plate and system for spinal stabilization |
US6966910B2 (en) * | 2002-04-05 | 2005-11-22 | Stephen Ritland | Dynamic fixation device and method of use |
US8114133B2 (en) * | 2006-04-18 | 2012-02-14 | Joseph Nicholas Logan | Spinal rod system |
US20080255619A1 (en) * | 2007-04-10 | 2008-10-16 | Schneiderman Gary A | Posterior spinal fixation with colinear facet screw |
US20090088800A1 (en) * | 2007-08-24 | 2009-04-02 | Spinal Elements, Inc. | Loop rod spinal stablization device |
US20090326588A1 (en) * | 2008-06-27 | 2009-12-31 | Innovasis, Inc. | Cross connector |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9827016B2 (en) | 2008-12-17 | 2017-11-28 | Lanx S.R.L. | Modular vertebral stabilizer |
Also Published As
Publication number | Publication date |
---|---|
US9827016B2 (en) | 2017-11-28 |
EP2376007B1 (en) | 2013-11-20 |
WO2010069964A1 (en) | 2010-06-24 |
US20150351803A1 (en) | 2015-12-10 |
EP2376007A1 (en) | 2011-10-19 |
IT1392298B1 (en) | 2012-02-24 |
ITMI20082240A1 (en) | 2010-06-18 |
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