US20090024218A1 - Intervertebral Implant - Google Patents
Intervertebral Implant Download PDFInfo
- Publication number
- US20090024218A1 US20090024218A1 US11/838,581 US83858107A US2009024218A1 US 20090024218 A1 US20090024218 A1 US 20090024218A1 US 83858107 A US83858107 A US 83858107A US 2009024218 A1 US2009024218 A1 US 2009024218A1
- Authority
- US
- United States
- Prior art keywords
- plate
- intervertebral implant
- intermediate plate
- cylindrical rod
- implant
- 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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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/442—Intervertebral or spinal discs, e.g. resilient
- A61F2/4425—Intervertebral or spinal discs, e.g. resilient made of articulated components
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/4455—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
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- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30383—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove
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- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30476—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
- A61F2002/30507—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism using a threaded locking member, e.g. a locking screw or a set screw
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- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30476—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
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- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30518—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements with possibility of relative movement between the prosthetic parts
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- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30565—Special structural features of bone or joint prostheses not otherwise provided for having spring elements
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
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- A61F2002/30621—Features concerning the anatomical functioning or articulation of the prosthetic joint
- A61F2002/30624—Hinged joint, e.g. with transverse axle restricting the movement
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- A61F2310/00005—The prosthesis being constructed from a particular material
- A61F2310/00179—Ceramics or ceramic-like structures
Definitions
- the invention relates to an intervertebral implant and to a process for the replacement of a defect, natural intervertebral disk by an intervertebral implant.
- implants or prostheses are inserted into the intervertebral space of two neighboring vertebral bodies.
- the patient should be able to carry out movements of the neighboring vertebral bodies relative to each other in the natural way, thereby incurring as little obstruction as possible.
- This essential feature of this system is its ability to retain the freedom of movement in forward/reverse inclination, i.e. flexion and extension of the vertebral bodies, and in lateral bending of the vertebral bodies within the natural limits.
- the natural sinews and muscles along the spinal column are in general left intact so that they further stabilize the movements of a mechanical intervertebral disk prosthesis.
- a characteristic intervertebral disk endoprosthesis is state of the art from DE-A 35 29 761 BuTTNER.
- This known intervertebral disk endoprosthesis basically consists of two symmetric closing plates with concave sliding surfaces facing each other, and each having an external surface for laying on the base plate, or the cover plate of the adjoining vertebral body, and a distance piece positioned between the closing plates with convex sliding surfaces arranged complementary to the concave sliding surfaces on the closing plates.
- the sliding surfaces are designed in one embodiment as section surfaces of a cylinder coat area, wherein the sliding surfaces arranged on the two closing plates are provided complementary to each of the adjoining sliding surfaces at the distance piece, and two complementary sliding surfaces form the articulation surfaces, which can be moved towards each other, of a joint element rotating around a swivel axle.
- the joint comprises an upper and a lower joint element, each of which has one swivel axle.
- the two swivel axles are set at 90 degree to each other.
- the invention is intended to remedy this situation.
- the invention is based on the task of creating an intervertebral implant that comprises a joint, the axles of which are provided with bearings with minimum friction.
- the invention solves the task with an intervertebral implant that has the features of claim 1 and with a process for replacing a defect, natural intervertebral disk by an intervertebral implant, comprising the steps of claim 23 .
- the advantages achieved by the invention can generally be seen in that with the intervertebral implant according to the invention: the swivel movements in the anterior-posterior and the lateral direction are independent of each other; the friction surface of the movements on the total of four linear contacts is reduced to a minimum; and the linear contact between the joint sections instead of sliding surfaces reduces the friction forces in the joint and as a result relative movement among the vertebral bodies, specifically lateral bending and flexion/extension movement of the spinal column is not impaired.
- two surfaces opposite each other or both pairs of surfaces opposite each other are formed as sliding surfaces for the circular-cylindrical rod(s). These sliding surfaces can thereby be formed as flat, circular-cylindrical or conical surfaces.
- the flat sliding surfaces allowing the circular-cylindrical rods an unrestricted freedom of movement with an inclination of the neighboring vertebral bodies relative to each other and with regard to a translation movement of the neighboring vertebral bodies relative to each other; concave or specifically circular-cylindrical surfaces mean that sufficient account will be taken of the physiological tilting behavior of the neighboring vertebral bodies according to the movement segment of the spinal column; and tilted sliding surfaces allow correction of the lordosis or kyphosis to take place at the same time as the operation.
- the surfaces on the three plate-shaped sections arranged as sliding surfaces are provided with a peripheral perimeter as security for the rods. This arrangement achieves the advantage of the circular-cylindrical rods being protected by the perimeter against falling out or being squeezed out from the intermediate spaces between the three plate-shaped sections.
- a pair of grooves is provided on one or both of the sliding-surface pairs formed by the four sliding surfaces as a bearing for the first and/or second rod.
- Each pair of grooves is preferably congruent to the circular-cylindrical rods it has to bear.
- the advantage of this embodiment is that the positioning of the grooves ensures that the gradient of the neighboring vertebral bodies can only be strictly set in the specified directions, such as lateral slant, as well as flexion and extension. Transverse forces that could have an effect on the vertebral joints, can be collected by the intervertebral implant since no translation movements of the plate-shaped sections bordering on the vertebral bodies is possible.
- At least one pair of grooves is designed incongruent to the circular-cylindrical rods they have to bear and is preferably provided with a width that allows a restricted rotation of the rods around the central axle in the grooves.
- the advantage of this embodiment lies in the restriction is gives to the freedom of movement of the neighboring vertebral bodies with gradient. Translation is at the same time possible in a strictly lateral or strictly anterior-posterior direction.
- At least one part of the grooves is provided with a limit/stop to prevent against axial shifting of the rod carried by the groove, which stop is attached on the periphery.
- the grooves preferably do not lead into the side surfaces of the plate-shaped sections but are closed at their ends. This will ensure that the circular-cylindrical rods cannot slip out of the grooves parallel to their longitudinal axes.
- the one pair of grooves for the first rod runs preferably from the ventral to the dorsal side surfaces of the corresponding plate-shaped sections whereas the second pair of grooves for the second rod runs between the lateral side surfaces of the corresponding plate-shaped sections.
- this orientation of the rods can also be carried out by arrangement of the limiters/stops.
- this comprises elastically malleable means that hold together the upper and the lower section with the intermediate central section and the two rods to each other.
- the elastically malleable means can be springs or elastomer connection elements.
- the four sliding surfaces and the two rods are made of metal.
- the four sliding surfaces are made of metal and the two rods are ceramic.
- the following dimensions are suitable for the plate-shaped sections and the cylindrical rods: length of the circular-cylindrical rods: larger than half the expansion of the sliding surface coming in contact with the rod; radius of the circular-cylindrical rods: between 0.3 mm and 5.0 mm; cylinder radius of the sliding surfaces: between 12 mm and 140 mm; width of the grooves: between 3 mm and 12 mm; depth of the grooves: between 0.2 mm and 4.8 mm; and angle range of the admissible rotation of the circular-cylindrical rods around the central axle of the intervertebral implant: between 1 degree and 32 degree.
- a means can be attached to the three plate-shaped sections from the ventral side areas which fixes the three plate-shaped sections ventral at a specific distance relative to each other.
- the means allows temporary blocking of the mobility of the three plate-shaped sections around the joints.
- This measure provides the advantage that the joints integrated in the intervertebral space can be blocked by a minimum invasive operation. This is particularly advantageous in cases where the patient suffers from post-operative pain, i.e. where degeneration of the affected spinal column segment continues and the surgeon is considering a fusion of the affected vertebra.
- the means can preferably be attached to the ventral side areas of the three plate-shaped sections. With this subsequent, secondary blocking of the mobility of the three plate-shaped sections around the joints, the intervertebral implant is stiffened and transferred to an arthrodesis implant (fusion cage).
- the means comprises an insert, which can be placed into each depression on the surfaces of the upper and lower plate-shaped section opposite each other.
- These depressions are preferably provided as dovetail guides that are open on the ventral side areas of the two external plate-shaped sections, so that the ends of the insert arranged complementary to the dovetail guides can be inserted from ventral into the dovetail guides.
- the two plate-shaped sections are provided with drill holes for receiving the bone fixation means, specifically bone screws, wherein the drill holes are provided with longitudinal axes that stand perpendicular to the central axis.
- the drill holes are provided with longitudinal axes that stand perpendicular to the central axis.
- two drill holes will pass through one of the two plate-shaped sections from the ventral side area to the apposition surface.
- the drill holes for receiving the bone fixation means are provided with internal threads, which allows additional, rigid fixing of the bone fixation means in the two plate-shaped sections.
- the drill holes preferably have a conical shape so that a stronger fixing of the bone fixation means to each of the two plate-shaped sections can be achieved by the resulting conical thread connections between the internal threads and the external threads on the heads of the bone fixation means.
- the apposition surfaces are preferably of convex shape and provided with a three-dimensional structure, preferably in the form of pyramid elevations. This arrangement of the apposition surfaces takes account of the anatomy of the vertebral body end plates.
- the process according to the invention is intended primarily for replacing a defect, natural intervertebral disk by an intervertebral implant and comprises the following steps:
- this comprises the subsequent blocking of the joint on the implanted intervertebral implant by means of the device intended for blocking the joint.
- This provides the advantage that if the patient should suffer from post-operative pains or in case of a further degeneration of the movement segment, the joint on the intervertebral implant are blocked post-operative by the insertion of the means intended for this purpose.
- This subsequent blocking can be achieved with an minimally invasive, preferably a laparoscopic operation.
- the intervertebral implant then assumes the function of a cage, so that the affected movement segment of the spinal column can be stiffened.
- FIG. 1 shows an explosion diagram of one embodiment of the intervertebral implant according to the invention
- FIG. 2 a - 2 c shows three perspective illustrations of different embodiments of the sliding surfaces by the example of the lower plate-shaped section
- FIG. 3 a shows a view of an embodiment of the intervertebral implant according to the invention
- FIG. 3 b shows a section parallel to the second swivel axle of the embodiment of the intervertebral implant according to the invention illustrated in FIG. 3 a;
- FIG. 4 shows an explosion drawing of a further embodiment of the intervertebral implant according to the invention.
- FIG. 5 shows a section parallel to the second swivel axle of the embodiment of the intervertebral implant according to the invention illustrated in FIG. 4 ;
- FIG. 6 shows an explosion drawing of a further embodiment of the intervertebral implant according to the invention.
- FIG. 7 shows an explosion drawing of a further embodiment of the intervertebral implant according to the invention.
- FIG. 8 a shows a view of the embodiment of the intervertebral implant according to the invention illustrated in FIG. 7 ;
- FIG. 8 b shows a section parallel to the second swivel axle of the embodiment of the intervertebral implant according to the invention illustrated in FIG. 7 and FIG. 8 a;
- FIG. 9 shows an explosion drawing of a further embodiment of the intervertebral implant according to the invention.
- FIG. 10 a shows a view of the embodiment of the intervertebral implant according to the invention illustrated in FIG. 9 ;
- FIG. 10 b shows a section parallel to the second swivel axle of the embodiment of the intervertebral implant according to the invention illustrated in FIG. 9 and FIG. 10 a;
- FIG. 11 shows a perspective view of a further embodiment of the intervertebral implant according to the invention.
- FIG. 12 shows a perspective view of an embodiment of the intervertebral implant according to the invention in the implanted state.
- the three plate-shaped sections 10 ; 20 ; 30 are provided with an oval, elliptical, circular or polygonal cross-section surface orthogonal to the central axle 2 .
- the surfaces 16 ; 26 ; 25 ; 35 of the three plate-shaped sections 10 ; 20 ; 30 arranged facing each other in pairs are designed here as flat surfaces.
- a first circular-cylindrical rod 40 is inserted between the upper surface 26 of the central section 20 and the lower surface 16 of the upper section 10 .
- a second circular-cylindrical rod 50 is inserted between the lower surface 25 of the central section 2 and the upper surface 36 of the lower section 30 .
- the two circular-cylindrical rods 40 ; 50 are arranged between the surfaces 16 ; 26 ; 25 ; 36 so that their longitudinal axes 41 ; 51 are standing vertically to the central axle 2 .
- the circular-cylindrical rods 40 ; 50 arranged between the surfaces 16 ; 26 ; 25 ; 36 lead to the upper section 10 being able to rotate relative to the lower section 30 around the longitudinal axes 41 ; 51 of the circular-cylindrical rods 40 ; 50 .
- FIGS. 2 a to 2 c Various embodiments of the surface 36 functioning as a sliding surface are illustrated in FIGS. 2 a to 2 c by the example of the lower plate-shaped section 30 , in which the surface 36 in FIG. 2 a is arranged vertically and at a plane to the central axle 2 and in FIG. 2 c concave and circular cylindrical.
- the lower plate-shaped section 30 according to FIG. 2 b has a conical design, wherein the surface 36 is arranged at a plane and is not vertical to the central axle 2 .
- the surfaces 16 ; 26 ; 25 of the upper and of the central plate-shaped section 10 ; 20 functioning as sliding surfaces can be arranged in the same way.
- the embodiment of the intervertebral implant according to the invention 1 illustrated in FIG. 3 a and FIG. 3 b differs from the embodiment illustrated in FIG. 1 only in that the surfaces 16 ; 25 ; 26 ; 36 of the three plate-shaped sections 10 ; 20 ; 30 , as illustrated in FIG. 2 c , functioning as sliding surfaces are provided with concave and circular-cylindrical arrangement.
- the surfaces 16 ; 25 ; 26 ; 36 are furthermore arched so that the longitudinal axis 41 of the first circular-cylindrical rod 40 runs anterior-posterior and intersects the central axle 2 of the intervertebral implant 1 , whereas the longitudinal axis 51 of the second circular-cylindrical rod 50 runs medio-lateral and at a distance from the longitudinal axis 2 of the intervertebral implant 1 .
- the surfaces 16 ; 25 ; 26 ; 36 are furthermore provided with a partial perimeter 70 , which is arranged vertically to the longitudinal axes 41 ; 51 of the two circular-cylindrical rods 40 ; 50 , and prevent the shifting of the rods 40 ; 50 parallel to their longitudinal axes 41 ; 51 .
- FIG. 4 and FIG. 5 An embodiment of the intervertebral implant according to the invention is illustrated in FIG. 4 and FIG. 5 that differs from the embodiment illustrated in FIG. 1 only in that the surfaces 16 ; 25 ; 26 ; 36 arranged as sliding surfaces on the three plate-shaped sections 10 ; 20 ; 30 are provided with a peripheral perimeter 70 .
- the embodiment of the intervertebral implant according to the invention 1 illustrated in FIG. 6 differs from the embodiment illustrated in FIG. 4 and FIG. 5 only in that four limits/stops 80 are arranged on the upper surface 26 of the central plate-shaped section 20 in order to restrict the movement of the first circular-cylindrical rod 40 between the upper and the central section 10 ; 20 and again four limits/stops 80 are arranged on the upper surface 36 of the lower plate-shaped section 30 in order to restrict the movement of the second circular-cylindrical rod 50 .
- the limits/stops 80 restricts the swivel angle of the longitudinal axes 41 ; 51 of the two rods 40 ; 50 around the central axle 2 .
- FIG. 7 and FIG. 8 An embodiment of the intervertebral implant according to the invention 1 is illustrated in FIG. 7 and FIG. 8 , in which the surfaces 16 ; 26 ; 25 ; 36 of the three plate-shaped sections 10 ; 20 ; 30 assigned to each other in pairs are provided with grooves 17 ; 27 ; 28 ; 37 running perpendicular to the central axle 2 .
- the grooves 17 ; 27 ; 28 ; 37 are used for partial bearing of the circular-cylindrical rods 40 ; 50 and are provided with cross-section surfaces orthogonal to the longitudinal axes 41 ; 51 of the circular-cylindrical rods 40 ; 50 , which cross-section surfaces are part areas of an oval.
- the grooves 17 ; 27 functioning as bearing for the first circular-cylindrical rod 40 are thereby arranged so that the longitudinal axis 41 of the first circular-cylindrical rod 40 runs in an anterior-posterior direction.
- the grooves 28 ; 37 bearing the second circular-cylindrical rod 50 are arranged so that the longitudinal axis 51 of the second circular-cylindrical rod 50 runs in a medio-lateral direction.
- the grooves 17 ; 27 ; 28 ; 37 are furthermore closed against the side surfaces 11 ; 12 ; 21 ; 22 ; 23 ; 24 ; 33 ; 34 of the three plate-shaped sections 10 ; 20 ; 30 by means of limits/stops 75 , so that the circular-cylindrical rods 40 ; 50 cannot be raised from the grooves 17 ; 27 ; 28 ; 37 parallel to their longitudinal axes 41 ; 51 .
- the two circular-cylindrical rods 40 ; 50 are received in part by the grooves 17 ; 27 ; 28 ; 37 so that they are conducted in an axial direction.
- the grooves 17 ; 27 ; 28 ; 37 are arranged in such a way that the longitudinal axis 41 of the first circular-cylindrical rod 40 running in an anterior-posterior direction is arranged diametrically and intersects the central axle 2 , whereas the longitudinal axis 51 of the second circular-cylindrical rod 50 running in a medio-lateral direction is set at a distance from the central axle 2 .
- FIG. 9 and FIG. 10 An embodiment of the intervertebral implant according to the invention 1 is illustrated in FIG. 9 and FIG. 10 that differs from the embodiment illustrated in FIG. 7 and FIG. 8 only in that the grooves 17 ; 27 ; 28 ; 37 are provided with a cross-section surface orthogonal to the longitudinal axes 41 ; 51 of the circular-cylindrical rods 40 ; 50 , with a circular-segment type of cross-section surface.
- the two circular-cylindrical rods 40 ; 50 are received in part by the grooves 17 ; 27 ; 28 ; 37 , so that they are conducted through the two grooves 17 ; 27 ; 28 ; 37 both axially and perpendicularly to its longitudinal axis 41 and can carry out only a rotation movement around their longitudinal axes 41 ; 51 .
- the grooves 17 ; 27 ; 28 ; 37 are arranged in such a way that the longitudinal axis 41 of the first circular-cylindrical rod 40 running in an anterior-posterior direction is arranged diametrically and intersects the central axle 2 , whereas the longitudinal axis 51 of the second circular-cylindrical rod 50 running in a medio-lateral direction is set at a distance from the central axle 2 .
- FIG. 11 An embodiment of the intervertebral implant is illustrated in FIG. 11 that differs from the embodiments illustrated in FIGS. 1 to 10 in that the intervertebral implant 1 also comprises means 90 , wherein the mobility of the three plate-shaped sections 10 ; 20 ; 30 relative to each other is blocked in a way that can be released.
- the means 90 in the embodiment illustrated here comprise an insert 91 that can be slid in from the ventral side perpendicular to the central axle 2 and parallel to the lateral side surfaces 13 ; 14 ; 23 ; 24 ; 33 ; 34 of the three plate-shaped sections 10 ; 20 ; 30 .
- the insert 91 is slid in this way in two depressions 92 ; 93 , which are arranged as dovetail guides.
- the insert 91 is inserted from the ventral side surfaces of the two external plate-shaped sections 10 ; 30 into the depressions 92 ; 93 , realized as dovetail guides and secured to two plate-shaped sections 10 ; 30 by means of a screw 94 in each case.
- the insert 91 is moreover arranged terminally complementary to the depressions 92 ; 93 , so that the two external plate-shaped sections 10 ; 30 are fixed parallel to the central axle 2 relative to each other when the insert 91 is in position.
- the intervertebral implant 1 arranged as springs 61 furthermore comprises elastically malleable means 60 , by means of which the three plate-shaped sections 10 ; 20 ; 30 are held together parallel to the central axle 2 .
- the axial elastic malleability of the elastically malleable means 60 ensures there is no restriction on the mobility of the three plate-shaped sections 10 ; 20 ; 30 around the longitudinal axes 41 ; 51 of the two circular-cylindrical rods 40 ; 50 functioning as swivel axles.
- the springs 61 are arranged as tension springs and secured to catches 62 that are attached to the side surfaces 11 ; 12 ; 13 ; 14 ; 31 ; 32 ; 33 ; 34 of the two external plate-shaped sections 10 ; 30 .
- FIG. 12 shows an embodiment of the intervertebral implant 1 implanted between two vertebral bodies bordering on each other.
- the orientation of the three plate-shaped sections 10 ; 20 ; 30 is such that the longitudinal axis 41 of the first circular-cylindrical rod 40 runs anterior-posterior and the longitudinal axis 51 of the second circular-cylindrical rod 50 runs lateral-lateral.
Abstract
Description
- This application is a continuation of U.S. patent application Ser. No. 10/539,658, filed on Jul. 11, 2005, which was a national stage filing under 35 U.S.C. § 371 of PCT/CH02/00708, filed on Dec. 17, 2002, the contents of which are hereby incorporated by reference in their entirety.
- The invention relates to an intervertebral implant and to a process for the replacement of a defect, natural intervertebral disk by an intervertebral implant.
- After removal of a damaged, natural intervertebral disk or a damaged nucleus pulpous of an intervertebral disk, implants or prostheses are inserted into the intervertebral space of two neighboring vertebral bodies. This suggests the idea of restoring the situation as much as possible to a natural state, i.e. specifically to restore the original height of the intervertebral disk and thus the original distance between the two neighboring vertebral bodies. Furthermore, the patient should be able to carry out movements of the neighboring vertebral bodies relative to each other in the natural way, thereby incurring as little obstruction as possible. This essential feature of this system is its ability to retain the freedom of movement in forward/reverse inclination, i.e. flexion and extension of the vertebral bodies, and in lateral bending of the vertebral bodies within the natural limits. The natural sinews and muscles along the spinal column are in general left intact so that they further stabilize the movements of a mechanical intervertebral disk prosthesis.
- A characteristic intervertebral disk endoprosthesis is state of the art from DE-A 35 29 761 BuTTNER. This known intervertebral disk endoprosthesis basically consists of two symmetric closing plates with concave sliding surfaces facing each other, and each having an external surface for laying on the base plate, or the cover plate of the adjoining vertebral body, and a distance piece positioned between the closing plates with convex sliding surfaces arranged complementary to the concave sliding surfaces on the closing plates. The sliding surfaces are designed in one embodiment as section surfaces of a cylinder coat area, wherein the sliding surfaces arranged on the two closing plates are provided complementary to each of the adjoining sliding surfaces at the distance piece, and two complementary sliding surfaces form the articulation surfaces, which can be moved towards each other, of a joint element rotating around a swivel axle. The joint comprises an upper and a lower joint element, each of which has one swivel axle. The two swivel axles are set at 90 degree to each other. The disadvantages of this known intervertebral disk endoprosthesis is that
- a) the arrangement of an intervertebral disk endoprosthesis with only one fulcrum does not take sufficient account of the overlaying swivel movements transferred by the natural intervertebral disk, specifically in the anterior-posterior direction and in lateral flexion, which in the natural intervertebral disk are independent of each other;
- b) disadvantageous friction forces are generated by two articulating surfaces sliding on each other. This also leads to wear on the surfaces, including also abrasion and resistance in movement of the joint elements. There is also the risk of the “stick slip” effect; and
- c) a mechanical intervertebral disk prosthesis can scarcely prevent the further degeneration of the affected movement segments. Restoration of the original freedom of movement significantly reduces pain, with the resulting improvement to the patient's quality of life. A review of treatment will, however, have to be undertaken if pain recommences. This will normally involve complete removal of an intervertebral disk prosthesis of the standard model and a stiffening of the movement segment. This operation represents extreme discomfort and strain on the patient.
- The invention is intended to remedy this situation. The invention is based on the task of creating an intervertebral implant that comprises a joint, the axles of which are provided with bearings with minimum friction.
- The invention solves the task with an intervertebral implant that has the features of
claim 1 and with a process for replacing a defect, natural intervertebral disk by an intervertebral implant, comprising the steps ofclaim 23. - The advantages achieved by the invention can generally be seen in that with the intervertebral implant according to the invention: the swivel movements in the anterior-posterior and the lateral direction are independent of each other; the friction surface of the movements on the total of four linear contacts is reduced to a minimum; and the linear contact between the joint sections instead of sliding surfaces reduces the friction forces in the joint and as a result relative movement among the vertebral bodies, specifically lateral bending and flexion/extension movement of the spinal column is not impaired.
- In a further embodiment of the intervertebral implant according to the invention, two surfaces opposite each other or both pairs of surfaces opposite each other are formed as sliding surfaces for the circular-cylindrical rod(s). These sliding surfaces can thereby be formed as flat, circular-cylindrical or conical surfaces.
- The advantages of the different realizations of the sliding surfaces can be found in: the flat sliding surfaces allowing the circular-cylindrical rods an unrestricted freedom of movement with an inclination of the neighboring vertebral bodies relative to each other and with regard to a translation movement of the neighboring vertebral bodies relative to each other; concave or specifically circular-cylindrical surfaces mean that sufficient account will be taken of the physiological tilting behavior of the neighboring vertebral bodies according to the movement segment of the spinal column; and tilted sliding surfaces allow correction of the lordosis or kyphosis to take place at the same time as the operation.
- In a further embodiment of the intervertebral implant according to the invention the surfaces on the three plate-shaped sections arranged as sliding surfaces are provided with a peripheral perimeter as security for the rods. This arrangement achieves the advantage of the circular-cylindrical rods being protected by the perimeter against falling out or being squeezed out from the intermediate spaces between the three plate-shaped sections.
- In a further embodiment of the intervertebral implant according to the invention, a number of limits/stops are provided for restricting the rotation of the cylindrical rods around the central axle at least on one section of the sliding surfaces. This arrangement allows the following advantages to be achieved: the rotation of the two rods is limited to a certain direction but with an angular freedom of movement; this direction can be set to anterior-posterior for the one rod and medio-lateral for the other rod; and it is prevented that the two rods are aligned parallel to each other, so that the joint of the implant would have two parallel swivel axles at a distance from each other and then the two vertebral bodies in the proximity of the intervertebral implant would be able to carry out only flexion/extension movements and no lateral bending or vice versa.
- In another embodiment, a pair of grooves is provided on one or both of the sliding-surface pairs formed by the four sliding surfaces as a bearing for the first and/or second rod. Each pair of grooves is preferably congruent to the circular-cylindrical rods it has to bear. The advantage of this embodiment is that the positioning of the grooves ensures that the gradient of the neighboring vertebral bodies can only be strictly set in the specified directions, such as lateral slant, as well as flexion and extension. Transverse forces that could have an effect on the vertebral joints, can be collected by the intervertebral implant since no translation movements of the plate-shaped sections bordering on the vertebral bodies is possible.
- In another embodiment, at least one pair of grooves is designed incongruent to the circular-cylindrical rods they have to bear and is preferably provided with a width that allows a restricted rotation of the rods around the central axle in the grooves. The advantage of this embodiment lies in the restriction is gives to the freedom of movement of the neighboring vertebral bodies with gradient. Translation is at the same time possible in a strictly lateral or strictly anterior-posterior direction.
- In a further embodiment, at least one part of the grooves is provided with a limit/stop to prevent against axial shifting of the rod carried by the groove, which stop is attached on the periphery. The grooves preferably do not lead into the side surfaces of the plate-shaped sections but are closed at their ends. This will ensure that the circular-cylindrical rods cannot slip out of the grooves parallel to their longitudinal axes.
- The one pair of grooves for the first rod runs preferably from the ventral to the dorsal side surfaces of the corresponding plate-shaped sections whereas the second pair of grooves for the second rod runs between the lateral side surfaces of the corresponding plate-shaped sections.
- The anterior-posterior orientation of the longitudinal axis of the first rod and the lateral orientation of the longitudinal axis of the second rod results in a joint with crossed swivel axles. The grooves are preferably arranged in such a way that in one case the rod with the longitudinal axis oriented in an anterior-posterior direction is at the top and the rod with the longitudinal axis oriented in a lateral-lateral direction is below. The reverse is, however, also possible, which can take account of the circumstances that the individual movement segments of the spinal column are provided with naturally different axle positions.
- Instead of by grooves, this orientation of the rods can also be carried out by arrangement of the limiters/stops.
- In a further embodiment this comprises elastically malleable means that hold together the upper and the lower section with the intermediate central section and the two rods to each other. The elastically malleable means can be springs or elastomer connection elements.
- In a further embodiment the four sliding surfaces and the two rods are made of metal.
- In a further embodiment of the intervertebral implant according to the invention the four sliding surfaces are made of metal and the two rods are ceramic.
- The following dimensions are suitable for the plate-shaped sections and the cylindrical rods: length of the circular-cylindrical rods: larger than half the expansion of the sliding surface coming in contact with the rod; radius of the circular-cylindrical rods: between 0.3 mm and 5.0 mm; cylinder radius of the sliding surfaces: between 12 mm and 140 mm; width of the grooves: between 3 mm and 12 mm; depth of the grooves: between 0.2 mm and 4.8 mm; and angle range of the admissible rotation of the circular-cylindrical rods around the central axle of the intervertebral implant: between 1 degree and 32 degree.
- In a further embodiment of the intervertebral implant according to the invention, a means can be attached to the three plate-shaped sections from the ventral side areas which fixes the three plate-shaped sections ventral at a specific distance relative to each other. This measure provides the advantage that the three plate-shaped sections for insertion into the intervertebral space can be brought to a position with fixed implant height and can be moved around the joint after insertion into the intervertebral space and can be placed on the base or cover plate of the adjoining vertebral body.
- In a further embodiment of the intervertebral implant according to the invention, the means allows temporary blocking of the mobility of the three plate-shaped sections around the joints. This measure provides the advantage that the joints integrated in the intervertebral space can be blocked by a minimum invasive operation. This is particularly advantageous in cases where the patient suffers from post-operative pain, i.e. where degeneration of the affected spinal column segment continues and the surgeon is considering a fusion of the affected vertebra. The means can preferably be attached to the ventral side areas of the three plate-shaped sections. With this subsequent, secondary blocking of the mobility of the three plate-shaped sections around the joints, the intervertebral implant is stiffened and transferred to an arthrodesis implant (fusion cage).
- In a further embodiment of the intervertebral implant according to the invention, the means comprises an insert, which can be placed into each depression on the surfaces of the upper and lower plate-shaped section opposite each other. These depressions are preferably provided as dovetail guides that are open on the ventral side areas of the two external plate-shaped sections, so that the ends of the insert arranged complementary to the dovetail guides can be inserted from ventral into the dovetail guides. This provides the advantage that the mobility of the two plate-shaped sections around the joint is blocked due to the positioning of the insert. The rigidity of the blocking can be increased when the dovetail guides are designed so that they are reduced is size towards the central axis of the intervertebral implant, which creates additional wedging of the insert in the dovetail guides.
- In a further embodiment of the intervertebral implant according to the invention, the two plate-shaped sections are provided with drill holes for receiving the bone fixation means, specifically bone screws, wherein the drill holes are provided with longitudinal axes that stand perpendicular to the central axis. Preferably two drill holes will pass through one of the two plate-shaped sections from the ventral side area to the apposition surface. The longitudinal axes, if only an axial fixing of the intervertebral implant is provided, will then be able to stand only perpendicular to the central axis from a lateral perspective, or, if fixing of the intervertebral implant with stable angle is provided, will also from a lateral perspective diverge from the inner surfaces of the two plate-shaped sections against the apposition surfaces.
- In a further embodiment of the intervertebral implant according to the invention, the drill holes for receiving the bone fixation means are provided with internal threads, which allows additional, rigid fixing of the bone fixation means in the two plate-shaped sections. The drill holes preferably have a conical shape so that a stronger fixing of the bone fixation means to each of the two plate-shaped sections can be achieved by the resulting conical thread connections between the internal threads and the external threads on the heads of the bone fixation means.
- The apposition surfaces are preferably of convex shape and provided with a three-dimensional structure, preferably in the form of pyramid elevations. This arrangement of the apposition surfaces takes account of the anatomy of the vertebral body end plates.
- The process according to the invention is intended primarily for replacing a defect, natural intervertebral disk by an intervertebral implant and comprises the following steps:
- A) blocking of the joint(s) of an intervertebral implant by means of a special device placed in a certain position of the joint;
- B) insertion of the intervertebral implant into the intervertebral space to be treated;
- C) release and removal of the device inserted into the intervertebral implant for blocking the joint. Blocking the joint provides the advantage that the moveable plate-shaped sections with the external apposition surfaces can be inserted more easily into the intervertebral space to be treated.
- In a further application of the process according to the invention, this comprises the subsequent blocking of the joint on the implanted intervertebral implant by means of the device intended for blocking the joint. This provides the advantage that if the patient should suffer from post-operative pains or in case of a further degeneration of the movement segment, the joint on the intervertebral implant are blocked post-operative by the insertion of the means intended for this purpose. This subsequent blocking can be achieved with an minimally invasive, preferably a laparoscopic operation. The intervertebral implant then assumes the function of a cage, so that the affected movement segment of the spinal column can be stiffened.
- The invention and refinements of the invention are described in more detail below on the basis of a partially schematic illustration of several embodiments.
-
FIG. 1 shows an explosion diagram of one embodiment of the intervertebral implant according to the invention; -
FIG. 2 a-2 c shows three perspective illustrations of different embodiments of the sliding surfaces by the example of the lower plate-shaped section; -
FIG. 3 a shows a view of an embodiment of the intervertebral implant according to the invention; -
FIG. 3 b shows a section parallel to the second swivel axle of the embodiment of the intervertebral implant according to the invention illustrated inFIG. 3 a; -
FIG. 4 shows an explosion drawing of a further embodiment of the intervertebral implant according to the invention; -
FIG. 5 shows a section parallel to the second swivel axle of the embodiment of the intervertebral implant according to the invention illustrated inFIG. 4 ; -
FIG. 6 shows an explosion drawing of a further embodiment of the intervertebral implant according to the invention; -
FIG. 7 shows an explosion drawing of a further embodiment of the intervertebral implant according to the invention; -
FIG. 8 a shows a view of the embodiment of the intervertebral implant according to the invention illustrated inFIG. 7 ; -
FIG. 8 b shows a section parallel to the second swivel axle of the embodiment of the intervertebral implant according to the invention illustrated inFIG. 7 andFIG. 8 a; -
FIG. 9 shows an explosion drawing of a further embodiment of the intervertebral implant according to the invention; -
FIG. 10 a shows a view of the embodiment of the intervertebral implant according to the invention illustrated inFIG. 9 ; -
FIG. 10 b shows a section parallel to the second swivel axle of the embodiment of the intervertebral implant according to the invention illustrated inFIG. 9 andFIG. 10 a; -
FIG. 11 shows a perspective view of a further embodiment of the intervertebral implant according to the invention; and -
FIG. 12 shows a perspective view of an embodiment of the intervertebral implant according to the invention in the implanted state. - An embodiment of the intervertebral implant according to the
invention 1 is illustrated inFIG. 1 that comprises with regard to thecentral axle 2, arranged on top of each other, anupper section 10, with a ventral, a dorsal and two lateral side surfaces 11;12;13;14 as well as anupper apposition surface 15 and alower surface 16 arranged perpendicular to thecentral axle 2, alower section 30, with a ventral, a dorsal and two lateral side surfaces 31;32;33;34, and alower apposition surface 35 and anupper surface 36 arranged perpendicular to thecentral axle 2, and acentral section 20 positioned between the upper and thelower section 10;30, with a ventral, a dorsal and two lateral side surfaces 21;22;23;24 and towards thelower section 30 with alower surface 25 and towards theupper section 10 anupper surface 26. The three plate-shapedsections 10;20;30 are provided with an oval, elliptical, circular or polygonal cross-section surface orthogonal to thecentral axle 2. Thesurfaces 16;26;25;35 of the three plate-shapedsections 10;20;30 arranged facing each other in pairs are designed here as flat surfaces. A first circular-cylindrical rod 40 is inserted between theupper surface 26 of thecentral section 20 and thelower surface 16 of theupper section 10. In addition, a second circular-cylindrical rod 50 is inserted between thelower surface 25 of thecentral section 2 and theupper surface 36 of thelower section 30. The two circular-cylindrical rods 40;50 are arranged between thesurfaces 16;26;25;36 so that theirlongitudinal axes 41;51 are standing vertically to thecentral axle 2. The circular-cylindrical rods 40;50 arranged between thesurfaces 16;26;25;36 lead to theupper section 10 being able to rotate relative to thelower section 30 around thelongitudinal axes 41;51 of the circular-cylindrical rods 40;50. - Various embodiments of the
surface 36 functioning as a sliding surface are illustrated inFIGS. 2 a to 2 c by the example of the lower plate-shapedsection 30, in which thesurface 36 inFIG. 2 a is arranged vertically and at a plane to thecentral axle 2 and inFIG. 2 c concave and circular cylindrical. The lower plate-shapedsection 30 according toFIG. 2 b has a conical design, wherein thesurface 36 is arranged at a plane and is not vertical to thecentral axle 2. Thesurfaces 16;26;25 of the upper and of the central plate-shapedsection 10;20 functioning as sliding surfaces can be arranged in the same way. - The embodiment of the intervertebral implant according to the
invention 1 illustrated inFIG. 3 a andFIG. 3 b differs from the embodiment illustrated inFIG. 1 only in that thesurfaces 16;25;26;36 of the three plate-shapedsections 10;20;30, as illustrated inFIG. 2 c, functioning as sliding surfaces are provided with concave and circular-cylindrical arrangement. Thesurfaces 16;25;26;36 are furthermore arched so that thelongitudinal axis 41 of the first circular-cylindrical rod 40 runs anterior-posterior and intersects thecentral axle 2 of theintervertebral implant 1, whereas thelongitudinal axis 51 of the second circular-cylindrical rod 50 runs medio-lateral and at a distance from thelongitudinal axis 2 of theintervertebral implant 1. Thesurfaces 16;25;26;36 are furthermore provided with apartial perimeter 70, which is arranged vertically to thelongitudinal axes 41;51 of the two circular-cylindrical rods 40;50, and prevent the shifting of therods 40;50 parallel to theirlongitudinal axes 41;51. - An embodiment of the intervertebral implant according to the invention is illustrated in
FIG. 4 andFIG. 5 that differs from the embodiment illustrated inFIG. 1 only in that thesurfaces 16;25;26;36 arranged as sliding surfaces on the three plate-shapedsections 10;20;30 are provided with aperipheral perimeter 70. - The embodiment of the intervertebral implant according to the
invention 1 illustrated inFIG. 6 differs from the embodiment illustrated inFIG. 4 andFIG. 5 only in that four limits/stops 80 are arranged on theupper surface 26 of the central plate-shapedsection 20 in order to restrict the movement of the first circular-cylindrical rod 40 between the upper and thecentral section 10;20 and again four limits/stops 80 are arranged on theupper surface 36 of the lower plate-shapedsection 30 in order to restrict the movement of the second circular-cylindrical rod 50. The limits/stops 80 restricts the swivel angle of thelongitudinal axes 41;51 of the tworods 40;50 around thecentral axle 2. - An embodiment of the intervertebral implant according to the
invention 1 is illustrated inFIG. 7 andFIG. 8 , in which thesurfaces 16;26;25;36 of the three plate-shapedsections 10;20;30 assigned to each other in pairs are provided withgrooves 17;27;28;37 running perpendicular to thecentral axle 2. Thegrooves 17;27;28;37 are used for partial bearing of the circular-cylindrical rods 40;50 and are provided with cross-section surfaces orthogonal to thelongitudinal axes 41;51 of the circular-cylindrical rods 40;50, which cross-section surfaces are part areas of an oval. Thegrooves 17;27 functioning as bearing for the first circular-cylindrical rod 40 are thereby arranged so that thelongitudinal axis 41 of the first circular-cylindrical rod 40 runs in an anterior-posterior direction. Thegrooves 28;37 bearing the second circular-cylindrical rod 50 are arranged so that thelongitudinal axis 51 of the second circular-cylindrical rod 50 runs in a medio-lateral direction. Thegrooves 17;27;28;37 are furthermore closed against the side surfaces 11;12;21;22;23;24;33;34 of the three plate-shapedsections 10;20;30 by means of limits/stops 75, so that the circular-cylindrical rods 40;50 cannot be raised from thegrooves 17;27;28;37 parallel to theirlongitudinal axes 41;51. The two circular-cylindrical rods 40;50 are received in part by thegrooves 17;27;28;37 so that they are conducted in an axial direction. Thegrooves 17;27;28;37 are arranged in such a way that thelongitudinal axis 41 of the first circular-cylindrical rod 40 running in an anterior-posterior direction is arranged diametrically and intersects thecentral axle 2, whereas thelongitudinal axis 51 of the second circular-cylindrical rod 50 running in a medio-lateral direction is set at a distance from thecentral axle 2. - An embodiment of the intervertebral implant according to the
invention 1 is illustrated inFIG. 9 andFIG. 10 that differs from the embodiment illustrated inFIG. 7 andFIG. 8 only in that thegrooves 17;27;28;37 are provided with a cross-section surface orthogonal to thelongitudinal axes 41;51 of the circular-cylindrical rods 40;50, with a circular-segment type of cross-section surface. The two circular-cylindrical rods 40;50 are received in part by thegrooves 17;27;28;37, so that they are conducted through the twogrooves 17;27;28;37 both axially and perpendicularly to itslongitudinal axis 41 and can carry out only a rotation movement around theirlongitudinal axes 41;51. Thegrooves 17;27;28;37 are arranged in such a way that thelongitudinal axis 41 of the first circular-cylindrical rod 40 running in an anterior-posterior direction is arranged diametrically and intersects thecentral axle 2, whereas thelongitudinal axis 51 of the second circular-cylindrical rod 50 running in a medio-lateral direction is set at a distance from thecentral axle 2. - An embodiment of the intervertebral implant is illustrated in
FIG. 11 that differs from the embodiments illustrated inFIGS. 1 to 10 in that theintervertebral implant 1 also comprisesmeans 90, wherein the mobility of the three plate-shapedsections 10;20;30 relative to each other is blocked in a way that can be released. The means 90 in the embodiment illustrated here comprise aninsert 91 that can be slid in from the ventral side perpendicular to thecentral axle 2 and parallel to the lateral side surfaces 13;14;23;24;33;34 of the three plate-shapedsections 10;20;30. Theinsert 91 is slid in this way in twodepressions 92;93, which are arranged as dovetail guides. Theinsert 91 is inserted from the ventral side surfaces of the two external plate-shapedsections 10;30 into thedepressions 92;93, realized as dovetail guides and secured to two plate-shapedsections 10;30 by means of ascrew 94 in each case. Theinsert 91 is moreover arranged terminally complementary to thedepressions 92;93, so that the two external plate-shapedsections 10;30 are fixed parallel to thecentral axle 2 relative to each other when theinsert 91 is in position. Theintervertebral implant 1 arranged assprings 61 furthermore comprises elastically malleable means 60, by means of which the three plate-shapedsections 10;20;30 are held together parallel to thecentral axle 2. The axial elastic malleability of the elastically malleable means 60 ensures there is no restriction on the mobility of the three plate-shapedsections 10;20;30 around thelongitudinal axes 41;51 of the two circular-cylindrical rods 40;50 functioning as swivel axles. Thesprings 61 are arranged as tension springs and secured tocatches 62 that are attached to the side surfaces 11;12;13;14;31;32;33;34 of the two external plate-shapedsections 10;30. -
FIG. 12 shows an embodiment of theintervertebral implant 1 implanted between two vertebral bodies bordering on each other. The orientation of the three plate-shapedsections 10;20;30 is such that thelongitudinal axis 41 of the first circular-cylindrical rod 40 runs anterior-posterior and thelongitudinal axis 51 of the second circular-cylindrical rod 50 runs lateral-lateral.
Claims (15)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US11/838,581 US20090024218A1 (en) | 2002-12-17 | 2007-08-14 | Intervertebral Implant |
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US10/539,658 US7270682B2 (en) | 2002-12-17 | 2002-12-17 | Intervertebral implant |
PCT/CH2002/000708 WO2004054479A1 (en) | 2002-12-17 | 2002-12-17 | Intervertebral implant |
US11/838,581 US20090024218A1 (en) | 2002-12-17 | 2007-08-14 | Intervertebral Implant |
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US10/539,658 Continuation US7270682B2 (en) | 2002-12-17 | 2002-12-17 | Intervertebral implant |
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US (2) | US7270682B2 (en) |
EP (1) | EP1572039B1 (en) |
JP (1) | JP4210653B2 (en) |
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AU (1) | AU2002347120B2 (en) |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070168034A1 (en) * | 2003-08-01 | 2007-07-19 | Kim Daniel H | Prosthetic intervertebral discs having stiff end plates and a compressible polymeric core |
US20110190891A1 (en) * | 2010-02-03 | 2011-08-04 | Sean Suh | Device for Stabilizing a Vertebral Joint and Method for Anterior Insertion Thereof |
US9216096B2 (en) | 2010-03-16 | 2015-12-22 | Pinnacle Spine Group, Llc | Intervertebral implants and related tools |
US9380932B1 (en) | 2011-11-02 | 2016-07-05 | Pinnacle Spine Group, Llc | Retractor devices for minimally invasive access to the spine |
US9539101B2 (en) | 2010-02-03 | 2017-01-10 | Globus Medical, Inc. | Device for stabilizing a vertebral joint and method for anterior insertion thereof |
US10070970B2 (en) | 2013-03-14 | 2018-09-11 | Pinnacle Spine Group, Llc | Interbody implants and graft delivery systems |
Families Citing this family (78)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004058098A2 (en) * | 2002-12-17 | 2004-07-15 | Amedica Corporation | Total disc implant |
WO2004066884A1 (en) | 2003-01-31 | 2004-08-12 | Spinalmotion, Inc. | Intervertebral prosthesis placement instrument |
EP2329778A3 (en) | 2003-01-31 | 2012-06-20 | Spinalmotion, Inc. | Spinal midline indicator |
WO2004105638A2 (en) | 2003-05-27 | 2004-12-09 | Spinalmotion, Inc. | Prosthetic disc for intervertebral insertion |
US7575599B2 (en) | 2004-07-30 | 2009-08-18 | Spinalmotion, Inc. | Intervertebral prosthetic disc with metallic core |
US10052211B2 (en) | 2003-05-27 | 2018-08-21 | Simplify Medical Pty Ltd. | Prosthetic disc for intervertebral insertion |
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US7909869B2 (en) | 2003-08-05 | 2011-03-22 | Flexuspine, Inc. | Artificial spinal unit assemblies |
US7799082B2 (en) | 2003-08-05 | 2010-09-21 | Flexuspine, Inc. | Artificial functional spinal unit system and method for use |
US7753958B2 (en) | 2003-08-05 | 2010-07-13 | Gordon Charles R | Expandable intervertebral implant |
DE502004006648D1 (en) * | 2003-11-18 | 2008-05-08 | Zimmer Gmbh | Intervertebral disc implant |
DE502004010737D1 (en) * | 2003-12-09 | 2010-03-25 | Biedermann Motech Gmbh | Height-adjustable intervertebral implant |
US7485146B1 (en) * | 2004-03-08 | 2009-02-03 | Nuvasive, Inc. | Total disc replacement system and related methods |
ES2341248T3 (en) * | 2004-04-02 | 2010-06-17 | Synthes Gmbh | INTERESTTEBRAL DISK PROTECTION OR ARTIFICIAL VERTEBRA. |
EP1773256B1 (en) | 2004-06-30 | 2019-11-27 | Synergy Disc Replacement Inc. | Artificial spinal disc |
US8172904B2 (en) * | 2004-06-30 | 2012-05-08 | Synergy Disc Replacement, Inc. | Artificial spinal disc |
US7585326B2 (en) | 2004-08-06 | 2009-09-08 | Spinalmotion, Inc. | Methods and apparatus for intervertebral disc prosthesis insertion |
US20080004704A1 (en) * | 2004-09-23 | 2008-01-03 | Katz Akiva R | Inter-Vertebral Disc Prosthesis |
WO2006042487A1 (en) * | 2004-10-18 | 2006-04-27 | Buettner-Janz Karin | Intervertebral disc endoprosthesis having cylindrical articulation surfaces |
US7887589B2 (en) * | 2004-11-23 | 2011-02-15 | Glenn Bradley J | Minimally invasive spinal disc stabilizer and insertion tool |
US8083797B2 (en) | 2005-02-04 | 2011-12-27 | Spinalmotion, Inc. | Intervertebral prosthetic disc with shock absorption |
US20070093900A1 (en) * | 2005-09-26 | 2007-04-26 | Williams Lytton A | Modular articulating and fusion spinal disc implant system |
US8753399B2 (en) * | 2005-11-28 | 2014-06-17 | Stryker Spine | Dynamic interbody device |
US20070173942A1 (en) * | 2006-01-26 | 2007-07-26 | Sdgi Holdings, Inc. | Intervertebral prosthetic disc |
US8118869B2 (en) * | 2006-03-08 | 2012-02-21 | Flexuspine, Inc. | Dynamic interbody device |
US8734519B2 (en) | 2006-04-12 | 2014-05-27 | Spinalmotion, Inc. | Posterior spinal device and method |
US8366776B2 (en) * | 2006-04-13 | 2013-02-05 | Warsaw Orthopedic, Inc. | Vertebral implants having predetermined angular correction and method of use |
US8043379B2 (en) | 2006-04-21 | 2011-10-25 | Depuy Spine, Inc. | Disc prosthesis having remote flexion/extension center of rotation |
US8906096B2 (en) | 2006-08-15 | 2014-12-09 | GMFDelaware 2 LLC | Spinal implant |
US9867640B2 (en) * | 2006-12-07 | 2018-01-16 | Nexus Spine, LLC | Press-on pedicle screw assembly |
US8715352B2 (en) | 2006-12-14 | 2014-05-06 | Depuy Spine, Inc. | Buckling disc replacement |
US9066811B2 (en) | 2007-01-19 | 2015-06-30 | Flexuspine, Inc. | Artificial functional spinal unit system and method for use |
US8308801B2 (en) * | 2007-02-12 | 2012-11-13 | Brigham Young University | Spinal implant |
US20090043391A1 (en) | 2007-08-09 | 2009-02-12 | Spinalmotion, Inc. | Customized Intervertebral Prosthetic Disc with Shock Absorption |
WO2009039171A2 (en) * | 2007-09-17 | 2009-03-26 | Linares Medical Devices, Llc | Artificial joint support between first and second bones |
US8162994B2 (en) | 2007-10-22 | 2012-04-24 | Flexuspine, Inc. | Posterior stabilization system with isolated, dual dampener systems |
US8267965B2 (en) | 2007-10-22 | 2012-09-18 | Flexuspine, Inc. | Spinal stabilization systems with dynamic interbody devices |
US8157844B2 (en) | 2007-10-22 | 2012-04-17 | Flexuspine, Inc. | Dampener system for a posterior stabilization system with a variable length elongated member |
US8182514B2 (en) | 2007-10-22 | 2012-05-22 | Flexuspine, Inc. | Dampener system for a posterior stabilization system with a fixed length elongated member |
US8758441B2 (en) | 2007-10-22 | 2014-06-24 | Spinalmotion, Inc. | Vertebral body replacement and method for spanning a space formed upon removal of a vertebral body |
US8187330B2 (en) | 2007-10-22 | 2012-05-29 | Flexuspine, Inc. | Dampener system for a posterior stabilization system with a variable length elongated member |
US8523912B2 (en) | 2007-10-22 | 2013-09-03 | Flexuspine, Inc. | Posterior stabilization systems with shared, dual dampener systems |
DE102007058304A1 (en) | 2007-12-04 | 2009-06-10 | Global Medical Consulting Gmbh | Disc prosthesis |
US9232965B2 (en) | 2009-02-23 | 2016-01-12 | Nexus Spine, LLC | Press-on link for surgical screws |
US8894687B2 (en) | 2011-04-25 | 2014-11-25 | Nexus Spine, L.L.C. | Coupling system for surgical construct |
US8333804B1 (en) * | 2008-03-27 | 2012-12-18 | Spinelogik, Inc. | Intervertebral fusion device and method of use |
US8313528B1 (en) | 2008-03-27 | 2012-11-20 | Spinelogik, Inc. | Intervertebral fusion device and method of use |
US9034038B2 (en) | 2008-04-11 | 2015-05-19 | Spinalmotion, Inc. | Motion limiting insert for an artificial intervertebral disc |
KR20110009216A (en) | 2008-05-05 | 2011-01-27 | 스피날모우션, 인코포레이티드 | Polyaryletherketone artificial intervertebral disc |
US9220603B2 (en) | 2008-07-02 | 2015-12-29 | Simplify Medical, Inc. | Limited motion prosthetic intervertebral disc |
EP2299944A4 (en) | 2008-07-17 | 2013-07-31 | Spinalmotion Inc | Artificial intervertebral disc placement system |
US8172902B2 (en) | 2008-07-17 | 2012-05-08 | Spinemedica, Llc | Spinal interbody spacers |
EP2299941A1 (en) | 2008-07-18 | 2011-03-30 | Spinalmotion Inc. | Posterior prosthetic intervertebral disc |
US8814937B2 (en) | 2008-09-18 | 2014-08-26 | Peter L. Mayer | Intervertebral disc prosthesis, method for assembling, method for implanting prosthesis, and method for explanting |
US8187333B2 (en) * | 2008-09-18 | 2012-05-29 | Mayer Peter L | Intervertebral disc prosthesis and method for implanting and explanting |
US20100158209A1 (en) * | 2008-12-22 | 2010-06-24 | General Instrument Corporation | Access to Network Based on Automatic Speech-Recognition |
AU2010215992A1 (en) * | 2009-02-19 | 2010-08-26 | Anton E. Bowden | Compliant dynamic spinal implant |
WO2010108010A2 (en) * | 2009-03-19 | 2010-09-23 | Halverson Peter A | Spinal implant |
US20100256758A1 (en) * | 2009-04-02 | 2010-10-07 | Synvasive Technology, Inc. | Monolithic orthopedic implant with an articular finished surface |
US8556972B2 (en) | 2009-04-02 | 2013-10-15 | Sevika Holding AG | Monolithic orthopedic implant with an articular finished surface |
US9157497B1 (en) | 2009-10-30 | 2015-10-13 | Brigham Young University | Lamina emergent torsional joint and related methods |
US9427324B1 (en) | 2010-02-22 | 2016-08-30 | Spinelogik, Inc. | Intervertebral fusion device and method of use |
WO2012030552A1 (en) * | 2010-08-31 | 2012-03-08 | Synthes Usa, Llc | Controlling the degradation of bioresorbable metal implants |
US9700425B1 (en) | 2011-03-20 | 2017-07-11 | Nuvasive, Inc. | Vertebral body replacement and insertion methods |
US8388687B2 (en) | 2011-03-25 | 2013-03-05 | Flexuspine, Inc. | Interbody device insertion systems and methods |
EP2717807A2 (en) | 2011-06-07 | 2014-04-16 | Brigham Young University | Serpentine spinal stability device and associated methods |
US9526627B2 (en) | 2011-11-17 | 2016-12-27 | Exactech, Inc. | Expandable interbody device system and method |
US9393126B2 (en) | 2012-04-20 | 2016-07-19 | Peter L. Mayer | Bilaterally placed disc prosthesis for spinal implant and method of bilateral placement |
US9364339B2 (en) | 2012-04-30 | 2016-06-14 | Peter L. Mayer | Unilaterally placed expansile spinal prosthesis |
US9492288B2 (en) | 2013-02-20 | 2016-11-15 | Flexuspine, Inc. | Expandable fusion device for positioning between adjacent vertebral bodies |
US9517144B2 (en) | 2014-04-24 | 2016-12-13 | Exactech, Inc. | Limited profile intervertebral implant with incorporated fastening mechanism |
US10398565B2 (en) | 2014-04-24 | 2019-09-03 | Choice Spine, Llc | Limited profile intervertebral implant with incorporated fastening and locking mechanism |
US9642651B2 (en) | 2014-06-12 | 2017-05-09 | Brigham Young University | Inverted serpentine spinal stability device and associated methods |
CN106963523B (en) * | 2017-04-28 | 2018-11-09 | 北京爱康宜诚医疗器材有限公司 | Centrum prosthese |
CN106983585B (en) * | 2017-04-28 | 2019-01-08 | 北京爱康宜诚医疗器材有限公司 | Centrum prosthese |
US11331196B2 (en) | 2017-10-18 | 2022-05-17 | Loubert S. Suddaby | Expandable intervertebral implant for treatment of scoliosis |
US10792165B2 (en) | 2017-10-18 | 2020-10-06 | Loubert S. Suddaby | Expandable intervertebral implant for treatment of scoliosis |
KR102484143B1 (en) * | 2020-06-12 | 2023-01-04 | (주)서한케어 | Artificial disc |
Citations (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4759769A (en) * | 1987-02-12 | 1988-07-26 | Health & Research Services Inc. | Artificial spinal disc |
US4759766A (en) * | 1984-09-04 | 1988-07-26 | Humboldt-Universitaet Zu Berlin | Intervertebral disc endoprosthesis |
US5370697A (en) * | 1992-04-21 | 1994-12-06 | Sulzer Medizinaltechnik Ag | Artificial intervertebral disk member |
US5401269A (en) * | 1992-03-13 | 1995-03-28 | Waldemar Link Gmbh & Co. | Intervertebral disc endoprosthesis |
US5514183A (en) * | 1994-12-20 | 1996-05-07 | Epstein; Norman | Reduced friction prosthetic knee joint utilizing replaceable roller bearings |
US5725597A (en) * | 1995-11-09 | 1998-03-10 | Hwang; Sung Kwan | Artificial hip-joint |
US20010034553A1 (en) * | 2000-02-04 | 2001-10-25 | Michelson Gary Karlin | Expandable push-in arcuate interbody spinal fusion implant with tapered configuration during insertion |
US6402785B1 (en) * | 1999-06-04 | 2002-06-11 | Sdgi Holdings, Inc. | Artificial disc implant |
US6582466B1 (en) * | 1998-12-11 | 2003-06-24 | Stryker Spine | Intervertebral disc prosthesis with reduced friction |
US6610093B1 (en) * | 2000-07-28 | 2003-08-26 | Perumala Corporation | Method and apparatus for stabilizing adjacent vertebrae |
US6663632B1 (en) * | 1998-05-19 | 2003-12-16 | Synthes (U.S.A.) | Osteosynthetic implant with an embedded hinge joint |
US20030233146A1 (en) * | 2002-06-18 | 2003-12-18 | Alexander Grinberg | Intervertebral disc |
US20040143332A1 (en) * | 2002-10-31 | 2004-07-22 | Krueger David J. | Movable disc implant |
US20050065611A1 (en) * | 2001-11-06 | 2005-03-24 | Jean Huppert | Osseous achoring device for a prosthesis |
US20050159818A1 (en) * | 2002-06-26 | 2005-07-21 | Jason Blain | Total disc replacement system and related methods |
US20060036326A1 (en) * | 2002-09-02 | 2006-02-16 | Mathys Medizinaltechnik Ag | Intervertebral implant comprising a three-part articulation |
US7670377B2 (en) * | 2003-11-21 | 2010-03-02 | Kyphon Sarl | Laterally insertable artifical vertebral disk replacement implant with curved spacer |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US34553A (en) * | 1862-02-25 | Improvement in shifting hinge-joints or coupling-shafts of wagons | ||
CN2333369Y (en) * | 1998-05-29 | 1999-08-18 | 中山医科大学孙逸仙纪念医院 | Artificial lumbar intervertebral disc |
DE59904848D1 (en) * | 1999-05-21 | 2003-05-08 | Link Waldemar Gmbh Co | Intervertebral endoprosthesis with a toothed connecting plate |
EP1645248B8 (en) * | 2000-02-04 | 2010-06-16 | Warsaw Orthopedic, Inc. | Expandable interbody spinal fusion implant having pivotally attached blocker |
JP2002136564A (en) * | 2000-10-30 | 2002-05-14 | Purotec Fuji:Kk | Polyfunctional portable beauty machine |
-
2002
- 2002-12-17 CN CNB028300580A patent/CN100396258C/en not_active Expired - Fee Related
- 2002-12-17 KR KR1020057011462A patent/KR101004464B1/en not_active IP Right Cessation
- 2002-12-17 NZ NZ540230A patent/NZ540230A/en not_active IP Right Cessation
- 2002-12-17 WO PCT/CH2002/000708 patent/WO2004054479A1/en active IP Right Grant
- 2002-12-17 ES ES02782619T patent/ES2306800T3/en not_active Expired - Lifetime
- 2002-12-17 HU HU0500737A patent/HUP0500737A2/en unknown
- 2002-12-17 AT AT02782619T patent/ATE394086T1/en not_active IP Right Cessation
- 2002-12-17 CA CA2510248A patent/CA2510248C/en not_active Expired - Fee Related
- 2002-12-17 AU AU2002347120A patent/AU2002347120B2/en not_active Ceased
- 2002-12-17 US US10/539,658 patent/US7270682B2/en not_active Expired - Lifetime
- 2002-12-17 DE DE50212250T patent/DE50212250D1/en not_active Expired - Lifetime
- 2002-12-17 EP EP02782619A patent/EP1572039B1/en not_active Expired - Lifetime
- 2002-12-17 JP JP2004559547A patent/JP4210653B2/en not_active Expired - Fee Related
- 2002-12-17 BR BR0215957-0A patent/BR0215957A/en not_active Application Discontinuation
-
2003
- 2003-11-28 TW TW092133519A patent/TWI316402B/en not_active IP Right Cessation
- 2003-12-16 CL CL200302632A patent/CL2003002632A1/en unknown
- 2003-12-17 AR ARP030104679A patent/AR042507A1/en unknown
-
2007
- 2007-08-14 US US11/838,581 patent/US20090024218A1/en not_active Abandoned
Patent Citations (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4759766A (en) * | 1984-09-04 | 1988-07-26 | Humboldt-Universitaet Zu Berlin | Intervertebral disc endoprosthesis |
US4759769A (en) * | 1987-02-12 | 1988-07-26 | Health & Research Services Inc. | Artificial spinal disc |
US5401269A (en) * | 1992-03-13 | 1995-03-28 | Waldemar Link Gmbh & Co. | Intervertebral disc endoprosthesis |
US5370697A (en) * | 1992-04-21 | 1994-12-06 | Sulzer Medizinaltechnik Ag | Artificial intervertebral disk member |
US5514183A (en) * | 1994-12-20 | 1996-05-07 | Epstein; Norman | Reduced friction prosthetic knee joint utilizing replaceable roller bearings |
US5725597A (en) * | 1995-11-09 | 1998-03-10 | Hwang; Sung Kwan | Artificial hip-joint |
US6663632B1 (en) * | 1998-05-19 | 2003-12-16 | Synthes (U.S.A.) | Osteosynthetic implant with an embedded hinge joint |
US6582466B1 (en) * | 1998-12-11 | 2003-06-24 | Stryker Spine | Intervertebral disc prosthesis with reduced friction |
US6402785B1 (en) * | 1999-06-04 | 2002-06-11 | Sdgi Holdings, Inc. | Artificial disc implant |
US20050143821A1 (en) * | 1999-06-04 | 2005-06-30 | Zdeblick Thomas A. | Artificial disc implant |
US20010034553A1 (en) * | 2000-02-04 | 2001-10-25 | Michelson Gary Karlin | Expandable push-in arcuate interbody spinal fusion implant with tapered configuration during insertion |
US6610093B1 (en) * | 2000-07-28 | 2003-08-26 | Perumala Corporation | Method and apparatus for stabilizing adjacent vertebrae |
US20050065611A1 (en) * | 2001-11-06 | 2005-03-24 | Jean Huppert | Osseous achoring device for a prosthesis |
US20030233146A1 (en) * | 2002-06-18 | 2003-12-18 | Alexander Grinberg | Intervertebral disc |
US20050159818A1 (en) * | 2002-06-26 | 2005-07-21 | Jason Blain | Total disc replacement system and related methods |
US20060036326A1 (en) * | 2002-09-02 | 2006-02-16 | Mathys Medizinaltechnik Ag | Intervertebral implant comprising a three-part articulation |
US20040143332A1 (en) * | 2002-10-31 | 2004-07-22 | Krueger David J. | Movable disc implant |
US7670377B2 (en) * | 2003-11-21 | 2010-03-02 | Kyphon Sarl | Laterally insertable artifical vertebral disk replacement implant with curved spacer |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070168034A1 (en) * | 2003-08-01 | 2007-07-19 | Kim Daniel H | Prosthetic intervertebral discs having stiff end plates and a compressible polymeric core |
US9364336B2 (en) * | 2003-08-01 | 2016-06-14 | Spinal Kinetics Inc. | Prosthetic intervertebral discs |
US20110190891A1 (en) * | 2010-02-03 | 2011-08-04 | Sean Suh | Device for Stabilizing a Vertebral Joint and Method for Anterior Insertion Thereof |
US8556974B2 (en) * | 2010-02-03 | 2013-10-15 | Globus Medical, Inc. | Device for stabilizing a vertebral joint and method for anterior insertion thereof |
US9539101B2 (en) | 2010-02-03 | 2017-01-10 | Globus Medical, Inc. | Device for stabilizing a vertebral joint and method for anterior insertion thereof |
US9216096B2 (en) | 2010-03-16 | 2015-12-22 | Pinnacle Spine Group, Llc | Intervertebral implants and related tools |
US9649203B2 (en) | 2010-03-16 | 2017-05-16 | Pinnacle Spine Group, Llc | Methods of post-filling an intervertebral implant |
US9788973B2 (en) | 2010-03-16 | 2017-10-17 | Pinnacle Spine Group, Llc | Spinal implant |
US9380932B1 (en) | 2011-11-02 | 2016-07-05 | Pinnacle Spine Group, Llc | Retractor devices for minimally invasive access to the spine |
US10070970B2 (en) | 2013-03-14 | 2018-09-11 | Pinnacle Spine Group, Llc | Interbody implants and graft delivery systems |
Also Published As
Publication number | Publication date |
---|---|
HUP0500737A2 (en) | 2006-04-28 |
DE50212250D1 (en) | 2008-06-19 |
CA2510248A1 (en) | 2004-07-01 |
JP2006509564A (en) | 2006-03-23 |
WO2004054479A1 (en) | 2004-07-01 |
AU2002347120A1 (en) | 2004-07-09 |
CN1713864A (en) | 2005-12-28 |
CN100396258C (en) | 2008-06-25 |
ATE394086T1 (en) | 2008-05-15 |
US20060009850A1 (en) | 2006-01-12 |
ES2306800T3 (en) | 2008-11-16 |
CA2510248C (en) | 2011-03-01 |
TW200422033A (en) | 2004-11-01 |
NZ540230A (en) | 2005-12-23 |
AR042507A1 (en) | 2005-06-22 |
KR101004464B1 (en) | 2010-12-31 |
KR20050112078A (en) | 2005-11-29 |
EP1572039B1 (en) | 2008-05-07 |
TWI316402B (en) | 2009-11-01 |
JP4210653B2 (en) | 2009-01-21 |
EP1572039A1 (en) | 2005-09-14 |
US7270682B2 (en) | 2007-09-18 |
CL2003002632A1 (en) | 2005-02-04 |
BR0215957A (en) | 2005-09-13 |
AU2002347120B2 (en) | 2006-10-26 |
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