US20220273459A1 - Method and spacer device for spanning a space formed upon removal of an intervertebral disc - Google Patents
Method and spacer device for spanning a space formed upon removal of an intervertebral disc Download PDFInfo
- Publication number
- US20220273459A1 US20220273459A1 US17/663,445 US202217663445A US2022273459A1 US 20220273459 A1 US20220273459 A1 US 20220273459A1 US 202217663445 A US202217663445 A US 202217663445A US 2022273459 A1 US2022273459 A1 US 2022273459A1
- Authority
- US
- United States
- Prior art keywords
- intervertebral
- intervertebral spacer
- vertebral body
- body contacting
- end plates
- 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.)
- Pending
Links
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- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00005—The prosthesis being constructed from a particular material
- A61F2310/00011—Metals or alloys
- A61F2310/00035—Other metals or alloys
- A61F2310/00071—Nickel or Ni-based alloys
-
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- 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
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00005—The prosthesis being constructed from a particular material
- A61F2310/00011—Metals or alloys
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- A61F2310/00131—Tantalum or Ta-based alloys
-
- A—HUMAN NECESSITIES
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- 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
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00005—The prosthesis being constructed from a particular material
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-
- A—HUMAN NECESSITIES
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- 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
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00389—The prosthesis being coated or covered with a particular material
- A61F2310/00395—Coating or prosthesis-covering structure made of metals or of alloys
- A61F2310/00407—Coating made of titanium or of Ti-based alloys
-
- A—HUMAN NECESSITIES
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- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00389—The prosthesis being coated or covered with a particular material
- A61F2310/00395—Coating or prosthesis-covering structure made of metals or of alloys
- A61F2310/00419—Other metals
- A61F2310/00431—Coating made of aluminium or of Al-based alloys
-
- A—HUMAN NECESSITIES
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- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00389—The prosthesis being coated or covered with a particular material
- A61F2310/00592—Coating or prosthesis-covering structure made of ceramics or of ceramic-like compounds
- A61F2310/00598—Coating or prosthesis-covering structure made of compounds based on metal oxides or hydroxides
- A61F2310/00604—Coating made of aluminium oxide or hydroxides
-
- 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
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00389—The prosthesis being coated or covered with a particular material
- A61F2310/00592—Coating or prosthesis-covering structure made of ceramics or of ceramic-like compounds
- A61F2310/00796—Coating or prosthesis-covering structure made of a phosphorus-containing compound, e.g. hydroxy(l)apatite
-
- 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
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00389—The prosthesis being coated or covered with a particular material
- A61F2310/00592—Coating or prosthesis-covering structure made of ceramics or of ceramic-like compounds
- A61F2310/00856—Coating or prosthesis-covering structure made of compounds based on metal nitrides
- A61F2310/0088—Coating made of titanium nitride
-
- 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
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00389—The prosthesis being coated or covered with a particular material
- A61F2310/00976—Coating or prosthesis-covering structure made of proteins or of polypeptides, e.g. of bone morphogenic proteins BMP or of transforming growth factors TGF
Definitions
- the present disclosure relates to medical devices and methods. More specifically, the disclosure relates to intervertebral spacers and methods of spanning a space formed upon removal of an intervertebral disc.
- Intervertebral discs are the soft tissue structures located between each of the thirty-three vertebral bones that make up the vertebral (spinal) column. Essentially, the discs allow the vertebrae to move relative to one another.
- the vertebral column and discs are vital anatomical structures, in that they form a central axis that supports the head and torso, allow for movement of the back, and protect the spinal cord, which passes through the vertebrae in proximity to the discs.
- Discs often become damaged due to wear and tear or acute injury.
- discs may bulge (herniate), tear, rupture, degenerate or the like.
- a bulging disc may press against the spinal cord or a nerve exiting the spinal cord, causing “radicular” pain (pain in one or more extremities caused by impingement of a nerve root).
- Degeneration or other damage to a disc may cause a loss of “disc height,” meaning that the natural space between two vertebrae decreases. Decreased disc height may cause a disc to bulge, facet loads to increase, two vertebrae to rub together in an unnatural way and/or increased pressure on certain parts of the vertebrae and/or nerve roots, thus causing pain.
- chronic and acute damage to intervertebral discs is a common source of back related pain and loss of mobility.
- intervertebral discs When one or more damaged intervertebral discs cause a patient pain and discomfort, surgery is often required.
- surgical procedures for treating intervertebral discs have involved discectomy (partial or total removal of a disc), with or without interbody fusion of the two vertebrae adjacent to the disc.
- discectomy partial or total removal of a disc
- interbody fusion When the disc is partially or completely removed, it is necessary to replace the excised material to prevent direct contact between hard bony surfaces of adjacent vertebrae.
- pins, rods, screws, cages and/or the like are inserted between the vertebrae to act as support structures to hold the vertebrae and graft material in place while they permanently fuse together.
- One typical fusion procedure is achieved by inserting a “cage” that maintains the space usually occupied by the disc to prevent the vertebrae from collapsing and impinging the nerve roots.
- the cage is used in combination with bone graft material (either autograft or allograft) such that the two vertebrae and the graft material will grow together over time forming bridging bone between the two vertebrae.
- the fusion process typically takes 6-12 months after surgery. During in this time external bracing (orthotics) may be required. External factors such as smoking, osteoporosis, certain medications, and heavy activity can prolong or even prevent the fusion process. If fusion does not occur, patients may require reoperation.
- fusion cage is described in U.S. Pat. No. 4,904,261 and includes a horseshoe shaped body. This type cage is currently available in PEEK (polyetheretherketone). PEEK is used because it does not distort MRI and CT images of the vertebrae. However, PEEK is a material that does not allow bone to attach. Thus, fusion with a PEEK cage requires bridging bone to grow through the holes in the cage to provide stabilization.
- PEEK polyetheretherketone
- the typical fusion cage is formed with a large percentage of open space to allow the bone to grow through and form the bridging bone which immobilizes the discs.
- the large amount of open space means that the load on each segment of the cage is significantly higher than if the cage surface area was larger. This results in the cage subsiding or sinking into the bone over time causing the disc space to collapse.
- the hard cortical bone on the outer surface of the vertebral body that transfers load to the interbody cage or spacer is often scraped, punctured or otherwise damaged to provide blood to the interbody bone graft to facilitate bone growth. This damage to the bone used to promote bone growth can also lead to subsidence.
- RhBMP-2 is a genetically engineered version of a naturally occurring protein that helps to stimulate bone growth, marketed by Medtronic Sofamor Danek, Inc. as InFUSETM Bone Graft.
- InFUSETM Medtronic Sofamor Danek, Inc.
- InFUSETM Bone Graft
- InFUSETM adds significantly to the cost of a typical fusion surgery.
- Even with the bone graft and InFUSETM bone may fail to grow completely between the two vertebrae or the cage may subside into the vertebrae such that the fusion fails to achieve its purpose of maintaining disc height and preventing motion.
- intervertebral disc prostheses are the LINK SB CHARITLETM disc prosthesis (provided by DePuy Spine, Inc.) the MOBIDISKTM disc prosthesis (provided by LDR Medical), the BRYANTM cervical disc prosthesis (provided by Medtronic Sofamor Danek, Inc.), the PRODISCTM disc prosthesis or PRODISC-CTM disc prosthesis (from Synthes Stratec, Inc.), the PCMTM disc prosthesis (provided by Cervitech, Inc.), and the MAVERICKTM disc prosthesis (provided by Medtronic Sofomor Danek).
- existing disc prostheses provide advantages over traditional treatment methods, many patients are not candidates for an artificial disc due to facet degeneration, instability, poor bone strength, previous surgery, multi-level disease, and pain sources that are non-discogenic.
- Embodiments of the present disclosure provide a rigid intervertebral spacer and methods of spanning a space formed upon removal of an intervertebral disc.
- a method of spanning a space formed by upon removal of an intervertebral disc includes the steps of performing a discectomy to remove disc material between two adjacent vertebral bodies; placing an intervertebral spacer between the two adjacent vertebral bodies; and maintaining the disc space between the two adjacent vertebral bodies with the intervertebral spacer without the use of bone graft or bridging bone.
- the intervertebral spacer includes two end plates, each end plate having a metallic vertebral body contacting surface and an inner surface, and a connector interconnecting the inner surfaces of the two end plates in a rigid manner which limits motion between the end plates to less than a total of 5 degrees.
- the vertebral body contacting surfaces of the end plates have no holes therein or have holes which cover less than 40 percent of the vertebral body contacting surface.
- an intervertebral spacer for spanning a space formed by upon removal of an intervertebral disc includes two end plates sized and shaped to fit within an intervertebral space and a connector interconnecting the inner surfaces of the two end plates in a rigid manner which limits motion between the end plates to less than a total of 5 degrees.
- Each end plate has a metallic vertebral contacting surface and an inner surface and the vertebral body contacting surfaces of the end plates have no holes therein or have holes which cover less than 40 percent of the vertebral body contacting surfaces.
- a method of performing an anterior/posterior fusion comprises performing a discectomy to remove disc material between two adjacent vertebral bodies; placing an intervertebral spacer between the two adjacent discs; maintaining the disc space between the two adjacent discs with the intervertebral spacer; and posteriorly placing a stabilization system to fix the angle between the vertebral bodies.
- the intervertebral spacer includes two end plates each having a metallic vertebral contacting surface and an inner surface, and a rigid connector interconnecting the inner surfaces of the two end plates.
- the vertebral body contacting surfaces of the end plates have no holes therein or have holes which cover less than 40 percent of the vertebral body contacting surfaces.
- a fusion system in accordance with another aspect of the disclosure, includes an intervertebral spacer and a posteriorly placed stabilization system including at least two screws configured to be placed into the vertebral bodies and at least one connector there between,
- the intervertebral spacer includes two end plates sized and shaped to fit within an intervertebral space, each end plate having a vertebral contacting surface an inner surface and a rigid connector interconnecting the inner surfaces of the two end plates.
- the vertebral body contacting surfaces of the end plates have no holes therein or have holes which cover less than 40 percent of the vertebral body contacting surfaces.
- a fusion spacer includes a rigid spacer body sized and shaped to fit within an intervertebral space between two vertebral bodies, the body having two opposed metallic vertebral contacting surfaces; at least one fin extending from each of the vertebral contacting surfaces, the fins configured to be positioned within slots cut into the two vertebral bodies; and a plurality of serrations on the vertebral contacting surfaces. Holes, if present, cover less than 40 percent of the entire vertebral body contacting surfaces.
- a method of spanning a space formed upon removal of an intervertebral disc including: performing a discectomy to remove disc material between two adjacent vertebral bodies; cutting at least one slot in at least one of the adjacent vertebrae; placing an intervertebral spacer between the two adjacent vertebral bodies, the intervertebral spacer including: two end plates, each end plate having a metallic vertebral body contacting surface, an inner surface and a fin extending from the vertebral body contacting surface; a connector interconnecting the inner surfaces of the two end plates in a rigid manner which limits motion between the end plates to less than a total of 5 degrees; wherein the vertebral body contacting surfaces of the two end plates have at least one through hole therein that covers less than 40 percent of the vertebral body contacting surfaces, and wherein the at least one through hole therein extends longitudinally from one side of each end plate through the end plate to the other side of the end plate for bone growth therein, wherein the intervertebra
- an intervertebral spacer for spanning a space formed by upon removal of an intervertebral disc
- the intervertebral spacer including: two end plates sized and shaped to fit within an intervertebral space between two vertebrae, each end plate having a metallic vertebral contacting surface and an inner surface, wherein the vertebral body contacting surfaces of the two end plates have at least one through hole therein that covers less than 40 percent of the vertebral body contacting surfaces, and wherein the at least one through hole therein extends longitudinally from one side of each end plate through the end plate to the other side of the end plate for bone growth therein; a connector interconnecting the inner surfaces of the two end plates in a rigid manner which limits motion between the end plates to less than a total of 5 degrees; and at least one fin projecting from one of the vertebral contacting surfaces, wherein the fin is configured to be inserted into a slot cut in the vertebra to inhibit rotation of the intervertebral spacer with respect to the verte
- Yet another embodiment of the disclosure provides a method of spanning a space formed upon removal of an intervertebral disc, the method including: performing a discectomy to remove disc material between two adjacent vertebral bodies; cutting at least one slot in at least one of the adjacent vertebrae; placing an intervertebral spacer between the two adjacent vertebral bodies, the intervertebral spacer including: two end plates, each end plate having a metallic vertebral body contacting surface, an inner surface and a fin extending from the vertebral body contacting surface; a connector interconnecting the inner surfaces of the two end plates in a rigid manner to limits motion between the end plates; wherein the vertebral body contacting surfaces of the two end plates have at least one through hole therein, wherein the at least one through hole therein extends longitudinally from one side of each end plate through the end plate to the other side of the end plate for bone growth therein; placing a fin on one of the vertebral body contacting surfaces into the at least one slot, whereby the intervertebral spacer is
- FIG. 1 is a perspective view of an intervertebral spacer according to one embodiment of the present disclosure
- FIG. 2 is a cross sectional side view of the intervertebral spacer of FIG. 1 ;
- FIG. 3 is a top view of the intervertebral spacer of FIG. 1 ;
- FIG. 4 is a bottom view of the intervertebral spacer of FIG. 1 ;
- FIG. 5 is a perspective view of an intervertebral spacer according to another embodiment of the present disclosure.
- FIG. 6 is a perspective view of an intervertebral spacer according to an embodiment with added screw fixation.
- FIG. 7 is a perspective view of a further intervertebral spacer with added screw fixation.
- Various embodiments of the present disclosure generally provide for an intervertebral spacer having upper and lower plates connected by a central connector which is substantially rigid.
- the intervertebral spacer according to the present disclosure can maintain disc height and prevent subsidence with a large vertebral body contacting surface area while substantially reducing recovery time by eliminating the need for bridging bone.
- the fusion spacer described herein is designed particularly for patients who are not candidates for total disc replacement.
- FIG. 1 One example of an intervertebral spacer 10 for maintaining disc height between two adjacent vertebral discs is shown in FIG. 1 .
- the spacer includes two end plates 20 , 22 , each end plate having a vertebral contacting surface 24 and an inner surface 26 , and a connector 30 interconnecting the inner surfaces of the two end plates in a substantially rigid manner.
- the intervertebral spacer 10 when implanted between two vertebral discs maintains a desirable disc space between the two adjacent discs similar to that provided by a natural disc and eliminates the long recovery time required to grow bridging bone which is required in the traditional fusion surgery.
- the connector 30 has been shown as circular in cross section, other shapes may be used including oval, elliptical, or rectangular.
- the connector has been shown as a solid member connecting the plates 20 , 22 in the center of the plates one or more connectors may be provided in other configurations and at other locations.
- a connector may be the same or substantially the same diameter and shape as the plate, as in FIGS. 6 and 7 .
- multiple connectors can be arranged in a pattern, such as a rectangular pattern, or a hollow cylindrical connector can be used.
- the outer surface 24 is planar. Oftentimes, the outer surface 24 will include one or more surface features and/or materials to enhance attachment of the spacer 10 to vertebral bone. For example, as shown in FIG. 2 , the outer surface 24 may be machined to have serrations 40 or other surface features for promoting adhesion of the plates 20 , 22 to a vertebra. In the embodiments shown, the serrations 40 are pyramid shaped serrations extending in mutually orthogonal directions and arranged on opposite sides of a fin 50 . The serrations 40 may also be disposed in a region between fins 52 when the outer surface 24 has two fins.
- the bone integration structures are ridges, teeth, barbs or similar structures, they may be angled to ease insertion and prevent migration. These bone integration structures can be used to precisely cut the bone during implantation to cause bleeding bone and encourage bone integration.
- the outer surface 24 may be provided with a rough microfinish formed by blasting with aluminum oxide microparticles or the like to improve bone integration.
- the outer surface may also be titanium plasma sprayed or HA coated to further enhance attachment of the outer surface 24 to vertebral bone.
- the outer surface 24 may also carry one or more upstanding fins 50 , 52 extending in an anterior-posterior direction.
- the fins 50 , 52 are configured to be placed in slots cut into the vertebral bodies.
- the fins 50 , 52 each have a height greater than a width and have a length greater than the height.
- the fins 50 , 52 are pierced by transverse holes 54 for bone ingrowth.
- the transverse holes 54 may be formed in any shape and may extend partially or all the way through the fins 50 , 52 .
- the fins 50 , 52 may be rotated away from the anterior-posterior axis, such as in a lateral-lateral orientation, a posterolateral-anterolateral orientation, or the like to accommodate alternate implantation approaches.
- the fins 50 , 52 provide improved attachment to the bone and prevent rotation of the plates 20 , 22 in the bone.
- the fins 50 , 52 may extend from the surface 24 at an angle other than 90°.
- the fins may be canted away from one another with the bases slightly closer together than their edges at an angle such as about 80-88 degrees.
- the fins 50 , 52 may have any other suitable configuration including various numbers, angles and curvatures, in various embodiments.
- the fins 50 , 52 may be omitted altogether.
- FIG. 1 illustrates a combination of a first plate 20 with a single fin 50 and a second plate 22 with a double fin 52 . This arrangement is useful for double level disc replacements and utilizes offset slots in the vertebral body to prevent the rare occurrence of vertebral body splitting by avoiding cuts to the vertebral body in the same plane for multi-level implants.
- the spacer 10 has been shown with the fins 50 , 52 as the primary fixation feature, however, the fins may also be augmented or replaced with one or more screws extending through the plates and into the bone.
- the upper fin 50 may be replaced with a screw while the two lower fins 52 remain.
- the plates 20 , 22 can be provided with one or a series of holes to allow screws to be inserted at different locations at the option of the surgeon. However, the holes should not be of such size or number that the coverage of the plate 20 , 22 is decreased to such an extent that subsidence occurs.
- one or more screws may incorporate a locking feature to prevent the screws from backing out.
- the screws may also be provided with a bone integration coating.
- the upper and lower plates 20 , 22 and connector 30 may be constructed from any suitable metal, alloy or combination of metals or alloys, such as but not limited to cobalt chrome alloys, titanium (such as grade 5 titanium), titanium based alloys, tantalum, nickel titanium alloys, stainless steel, and/or the like. They may also be formed of ceramics, biologically compatible polymers including PEEK, UHMWPE (ultra high molecular weight polyethylene) or fiber reinforced polymers.
- the vertebral contacting surfaces 24 are formed of a metal or other material with good bone integration properties.
- the metallic vertebral body contacting surfaces 24 may be coated or otherwise covered with the metal for fixation.
- the plates 20 , 22 and the connector 20 may be formed of a one piece construction or may be formed of more than one piece, such as different materials coupled together. When the spacer 10 is formed of multiple materials these materials are fixed together to form a unitary one piece spacer structure without separately moving parts.
- the plates may be formed of titanium while the connector is formed of cobalt chromium alloy for improved imaging of the plates.
- Cobalt chrome molybdenum alloys when used for the plates 20 , 22 may be treated with aluminum oxide blasting followed by a titanium plasma spray to improve bone integration.
- Other materials and coatings can also be used such as titanium coated with titanium nitride, aluminum oxide blasting, HA (hydroxylapatite) coating, micro HA coating, and/or bone integration promoting coatings.
- Any other suitable metals or combinations of metals may be used as well as ceramic or polymer materials, and combinations thereof.
- Any suitable technique may be used to couple materials together, such as snap fitting, slip fitting, lamination, interference fitting, use of adhesives, welding and/or the like.
- some limited holes 60 may also be provided in the plates 20 , 22 to allow bone in growth. Holes provided in a typical fusion spacer provide a spacer with little structural support and maximum area for bone growth. Thus, the load transferred across the disc space per unit area of spacer is quite high resulting in possible subsidence of the typical spacer. In the spacer 10 of the present disclosure, the load transfer is spread across a larger area. If the outer surfaces 24 have holes 60 therein, the holes will cover less than 40 percent of the outer surface 24 which contacts the bone to prevent subsidence of the plates into the vertebral bodies. Preferably the holes will cover less than 25 percent, and more preferably less than 10 percent of the outer bone contacting surfaces.
- bone graft can be placed in the space between the inner surfaces 26 of the plates to encourage bone to grow through the plates.
- the holes 60 when present can take on a variety of shapes including circular, as shown, rectangular, polygonal or other irregular shapes.
- the holes 60 may extend through the various parts of the spacer including through the connector or through the fins.
- the holes 60 may change shape or size as they pass through portions of the spacer, for example, holes through the plates and the connector may taper to a smaller interior diameter.
- the typical fusion spacer requires bleeding bone to stimulate the growth of bridging bone.
- the cortical endplates are damaged purposefully to obtain bleeding by rasping or cutting the bone. This damage weakens the bone and can cause subsidence of the spacer.
- the spacer 10 described herein does not rely on bridging bone and does not require damaging the bone to cause bleeding.
- the spacer 10 can be implanted after simply cleaning the disc space and cutting slots into the vertebral endplates configured to receive the fins 50 , 52 . The rest of the endplates remain undamaged, providing better support and disc height maintenance.
- FIG. 6 shows another embodiment of a spacer 100 having a single fin 50 on the top and bottom and two fixation screws 70 extending at an angle of about 30 to about 60 degrees with respect to the vertebral body contacting surfaces 24 of the spacer.
- the spacer 100 also includes a connector 30 between the vertebral body contacting surfaces 24 which is formed in one piece with the upper and lower plates.
- the fixation screws 70 can include a locking mechanism, such as a locking thread or a separate locking member which is inserted into the screw holes 80 after the screws are inserted to prevent backing out of the screws.
- FIG. 7 illustrates an alternative embodiment of a spacer 110 having a single superior fin 50 , two inferior fins 52 , and three alternating holes 80 for receiving bone screws (not shown).
- the spacer 110 has multiple fixation structures to provide the patient near immediate mobility after the fusion procedure.
- the spacer 110 can be formed with an anterior flange extending from the top and the bottom at the anterior side of the plate. This optional flange can include one or more holes for receiving bone screws placed laterally. The laterally placed bone screws can prevent interference in the event of multilevel fusions and are particularly useful for a cervical fusion where space is more limited.
- the intervertebral spacer 10 shown herein is configured for placement in a lumbar intervertebral space from an anterior approach. It should be understood that all approaches can be used including PLIF (posterior lumbar interbody fusion), TLIF (transverse lumbar interbody fusion), XLIF (Lateral extracavitary interbody fusion), ALIF (anterior lumbar interbody fusion), trans-sacral, and other approaches.
- the shape of the intervertebral spacer would be modified depending on the approach. For example, for a posterior approach, the spacer may include two separate smaller spacers which are either positioned separately side-by-side in the intervertebral space or two spacers which are joined together once inside the intervertebral space. For a lateral approach, the intervertebral spacer may be formed in a more elongated, kidney bean or banana shape with a transversely oriented fin.
- the spacers 10 , 100 can be provided in different sizes, with different plate sizes, angles between plates, lordosis angles, and heights for different patients or applications.
- the spacers 10 , 100 are primarily designed for use in the lumbar spine, however the spacers may also be used for fusions of the cervical spine.
- the height of the spacer can be adjustable, such as by rotating an adjustment screw in the connector 30 before or after implantation.
- the spacers preferably are sized to provide substantial coverage of the vertebral surfaces.
- the plates are sized to cover at least 50 percent of the vertebral surface, and preferably cover at least 70 percent of the vertebral surface.
- the coverage of the vertebral surface may be somewhat smaller due to the small size of the access area, i.e. the posterior or lateral spacers may cover about 40 percent or more of the vertebral surface with a one or two part spacer, and preferably at least 50 percent of the vertebral surface.
- the size of the intervertebral spacers 10 , 100 , 110 can also be described in terms of the amount of the volume of the intervertebral space occupied by the spacer.
- the total volume of the intervertebral spacer selected for a particular intervertebral space fills at least 50 percent of the volume of the space available between the adjacent vertebrae. More preferably, the volume of the spacer is at least 70 percent of the volume of the intervertebral space.
- the volume of the intervertebral space is defined as the volume of the space between the vertebrae when the vertebrae are distracted to a normal physiologic position for the particular patient without over or under distracting.
- the size of the intervertebral spacers 10 , 100 , 110 can also be determined by the amount of the support provided to the ring of cortical bone surrounding each vertebrae.
- the cortical bone surrounds a more spongy cancellous bone tissue.
- the intervertebral spacer is selected to support at least 75 percent of the diameter of the ring of cortical bone.
- anterior/posterior fusion uses of one or more fusion cages to maintain the disc space while bridging bone grows and also uses a system of posterior screws and rods for further stabilization. Fusing both the front and back provides a high degree of stability for the spine and a large surface area for the bone fusion to occur. Also, approaching both sides of the spine often allows for a more aggressive reduction of motion for patients who have deformity in the lower back (e.g. isthmic spondylolisthesis).
- the anterior approach is performed first by removing the disc material and cutting the anterior longitudinal ligament (which lays on the front of the disc space).
- the spacer is positioned anteriorly and then the patient is turned over for the implantation of a posterior stabilization system.
- the intervertebral spacers of the present disclosure may be used in combination with a posterior stabilization system, dynamic rod stabilization system, or interspinous spacer to achieve the anterior/posterior fusion.
- a posterior intervertebral spacer formed in two parts can be used with a posterior stabilization system including screws and rods.
- This system provides the advantage of maintenance of disc height and stabilization with an entirely posterior approach.
Abstract
Description
- The present application is a continuation of U.S. patent application Ser. No. 15/359,298, filed Nov. 22, 2016, which is a continuation of U.S. patent application Ser. No. 12/255,731, filed Oct. 22, 2008, which claims priority from U.S. Provisional Patent Application No. 60/981,665, filed Oct. 22, 2007, the full disclosures of which are incorporated herein by reference.
- The present disclosure relates to medical devices and methods. More specifically, the disclosure relates to intervertebral spacers and methods of spanning a space formed upon removal of an intervertebral disc.
- Back pain takes an enormous toll on the health and productivity of people around the world. According to the American Academy of Orthopedic Surgeons, approximately 80 percent of Americans will experience back pain at some time in their life. In the year 2000, approximately 26 million visits were made to physicians' offices due to back problems in the United States. On any one day, it is estimated that 5% of the working population in America is disabled by back pain.
- One common cause of back pain is injury, degeneration and/or dysfunction of one or more intervertebral discs. Intervertebral discs are the soft tissue structures located between each of the thirty-three vertebral bones that make up the vertebral (spinal) column. Essentially, the discs allow the vertebrae to move relative to one another. The vertebral column and discs are vital anatomical structures, in that they form a central axis that supports the head and torso, allow for movement of the back, and protect the spinal cord, which passes through the vertebrae in proximity to the discs.
- Discs often become damaged due to wear and tear or acute injury. For example, discs may bulge (herniate), tear, rupture, degenerate or the like. A bulging disc may press against the spinal cord or a nerve exiting the spinal cord, causing “radicular” pain (pain in one or more extremities caused by impingement of a nerve root). Degeneration or other damage to a disc may cause a loss of “disc height,” meaning that the natural space between two vertebrae decreases. Decreased disc height may cause a disc to bulge, facet loads to increase, two vertebrae to rub together in an unnatural way and/or increased pressure on certain parts of the vertebrae and/or nerve roots, thus causing pain. In general, chronic and acute damage to intervertebral discs is a common source of back related pain and loss of mobility.
- When one or more damaged intervertebral discs cause a patient pain and discomfort, surgery is often required. Traditionally, surgical procedures for treating intervertebral discs have involved discectomy (partial or total removal of a disc), with or without interbody fusion of the two vertebrae adjacent to the disc. When the disc is partially or completely removed, it is necessary to replace the excised material to prevent direct contact between hard bony surfaces of adjacent vertebrae. Oftentimes, pins, rods, screws, cages and/or the like are inserted between the vertebrae to act as support structures to hold the vertebrae and graft material in place while they permanently fuse together.
- One typical fusion procedure is achieved by inserting a “cage” that maintains the space usually occupied by the disc to prevent the vertebrae from collapsing and impinging the nerve roots. The cage is used in combination with bone graft material (either autograft or allograft) such that the two vertebrae and the graft material will grow together over time forming bridging bone between the two vertebrae. The fusion process typically takes 6-12 months after surgery. During in this time external bracing (orthotics) may be required. External factors such as smoking, osteoporosis, certain medications, and heavy activity can prolong or even prevent the fusion process. If fusion does not occur, patients may require reoperation.
- One known fusion cage is described in U.S. Pat. No. 4,904,261 and includes a horseshoe shaped body. This type cage is currently available in PEEK (polyetheretherketone). PEEK is used because it does not distort MRI and CT images of the vertebrae. However, PEEK is a material that does not allow bone to attach. Thus, fusion with a PEEK cage requires bridging bone to grow through the holes in the cage to provide stabilization.
- It would be desirable to achieve immobilization of the vertebrae and maintain spacing between the adjacent vertebrae without the associated patient discomfort and long recovery time of traditional interbody fusion which may require immobilization for several months.
- Another problem associated with the typical fusion procedure is the subsidence of the cage into the vertebral body. The typical fusion cage is formed with a large percentage of open space to allow the bone to grow through and form the bridging bone which immobilizes the discs. However, the large amount of open space means that the load on each segment of the cage is significantly higher than if the cage surface area was larger. This results in the cage subsiding or sinking into the bone over time causing the disc space to collapse. In addition, the hard cortical bone on the outer surface of the vertebral body that transfers load to the interbody cage or spacer is often scraped, punctured or otherwise damaged to provide blood to the interbody bone graft to facilitate bone growth. This damage to the bone used to promote bone growth can also lead to subsidence.
- The U.S. Food and Drug Administration approved the use of a genetically engineered protein, or rhBMP-2, for certain types of spine fusion surgery. RhBMP-2 is a genetically engineered version of a naturally occurring protein that helps to stimulate bone growth, marketed by Medtronic Sofamor Danek, Inc. as InFUSE™ Bone Graft. When InFUSE™ is used with the bone graft material it eliminates the need for painful bone graft harvesting and improves patients' recovery time. However, InFUSE™ adds significantly to the cost of a typical fusion surgery. Additionally, even with the bone graft and InFUSE™ bone may fail to grow completely between the two vertebrae or the cage may subside into the vertebrae such that the fusion fails to achieve its purpose of maintaining disc height and preventing motion.
- In an attempt to treat disc related pain without fusion and to maintain motion, an alternative approach has been developed, in which a movable, implantable, artificial intervertebral disc (or “disc prosthesis”) is inserted between two vertebrae. A number of different artificial intervertebral discs are currently being developed. For example, U.S. Patent Application Publication Nos. 2005/0021146, 2005/0021145, and 2006/0025862, which are hereby incorporated by reference in their entirety, describe artificial intervertebral discs. Other examples of intervertebral disc prostheses are the LINK SB CHARITLE™ disc prosthesis (provided by DePuy Spine, Inc.) the MOBIDISK™ disc prosthesis (provided by LDR Medical), the BRYAN™ cervical disc prosthesis (provided by Medtronic Sofamor Danek, Inc.), the PRODISC™ disc prosthesis or PRODISC-C™ disc prosthesis (from Synthes Stratec, Inc.), the PCM™ disc prosthesis (provided by Cervitech, Inc.), and the MAVERICK™ disc prosthesis (provided by Medtronic Sofomor Danek). Although existing disc prostheses provide advantages over traditional treatment methods, many patients are not candidates for an artificial disc due to facet degeneration, instability, poor bone strength, previous surgery, multi-level disease, and pain sources that are non-discogenic.
- Therefore, a need exists for an improved spacer and method for spanning a space and maintaining disc spacing between two vertebrae after removal of an intervertebral disc. Ideally, such improved method and spacer would avoid the need for growth of bridging bone across the intervertebral space.
- Embodiments of the present disclosure provide a rigid intervertebral spacer and methods of spanning a space formed upon removal of an intervertebral disc.
- In accordance with one aspect of the present disclosure, a method of spanning a space formed by upon removal of an intervertebral disc includes the steps of performing a discectomy to remove disc material between two adjacent vertebral bodies; placing an intervertebral spacer between the two adjacent vertebral bodies; and maintaining the disc space between the two adjacent vertebral bodies with the intervertebral spacer without the use of bone graft or bridging bone. The intervertebral spacer includes two end plates, each end plate having a metallic vertebral body contacting surface and an inner surface, and a connector interconnecting the inner surfaces of the two end plates in a rigid manner which limits motion between the end plates to less than a total of 5 degrees. The vertebral body contacting surfaces of the end plates have no holes therein or have holes which cover less than 40 percent of the vertebral body contacting surface.
- In accordance with another aspect of the present disclosure, an intervertebral spacer for spanning a space formed by upon removal of an intervertebral disc includes two end plates sized and shaped to fit within an intervertebral space and a connector interconnecting the inner surfaces of the two end plates in a rigid manner which limits motion between the end plates to less than a total of 5 degrees. Each end plate has a metallic vertebral contacting surface and an inner surface and the vertebral body contacting surfaces of the end plates have no holes therein or have holes which cover less than 40 percent of the vertebral body contacting surfaces.
- In accordance with a further aspect of the disclosure, a method of performing an anterior/posterior fusion comprises performing a discectomy to remove disc material between two adjacent vertebral bodies; placing an intervertebral spacer between the two adjacent discs; maintaining the disc space between the two adjacent discs with the intervertebral spacer; and posteriorly placing a stabilization system to fix the angle between the vertebral bodies. The intervertebral spacer includes two end plates each having a metallic vertebral contacting surface and an inner surface, and a rigid connector interconnecting the inner surfaces of the two end plates. The vertebral body contacting surfaces of the end plates have no holes therein or have holes which cover less than 40 percent of the vertebral body contacting surfaces.
- In accordance with another aspect of the disclosure, a fusion system includes an intervertebral spacer and a posteriorly placed stabilization system including at least two screws configured to be placed into the vertebral bodies and at least one connector there between, The intervertebral spacer includes two end plates sized and shaped to fit within an intervertebral space, each end plate having a vertebral contacting surface an inner surface and a rigid connector interconnecting the inner surfaces of the two end plates. The vertebral body contacting surfaces of the end plates have no holes therein or have holes which cover less than 40 percent of the vertebral body contacting surfaces.
- In accordance with an additional aspect of the disclosure, a fusion spacer includes a rigid spacer body sized and shaped to fit within an intervertebral space between two vertebral bodies, the body having two opposed metallic vertebral contacting surfaces; at least one fin extending from each of the vertebral contacting surfaces, the fins configured to be positioned within slots cut into the two vertebral bodies; and a plurality of serrations on the vertebral contacting surfaces. Holes, if present, cover less than 40 percent of the entire vertebral body contacting surfaces.
- According to further embodiments of the disclosure, a method of spanning a space formed upon removal of an intervertebral disc, the method including: performing a discectomy to remove disc material between two adjacent vertebral bodies; cutting at least one slot in at least one of the adjacent vertebrae; placing an intervertebral spacer between the two adjacent vertebral bodies, the intervertebral spacer including: two end plates, each end plate having a metallic vertebral body contacting surface, an inner surface and a fin extending from the vertebral body contacting surface; a connector interconnecting the inner surfaces of the two end plates in a rigid manner which limits motion between the end plates to less than a total of 5 degrees; wherein the vertebral body contacting surfaces of the two end plates have at least one through hole therein that covers less than 40 percent of the vertebral body contacting surfaces, and wherein the at least one through hole therein extends longitudinally from one side of each end plate through the end plate to the other side of the end plate for bone growth therein, wherein the intervertebral spacer including the two end plates and connector is formed of a single piece; placing a fin on one of the vertebral body contacting surfaces into the at least one slot, whereby the intervertebral spacer is inhibited from rotating; and maintaining the disc spaced between the two adjacent vertebral bodies with the intervertebral spacer without the use of bone graft or bridging bone, wherein no part of the intervertebral spacer extends outside the intervertebral disc space and slot.
- Additional embodiments of the disclosure provide an intervertebral spacer for spanning a space formed by upon removal of an intervertebral disc, the intervertebral spacer including: two end plates sized and shaped to fit within an intervertebral space between two vertebrae, each end plate having a metallic vertebral contacting surface and an inner surface, wherein the vertebral body contacting surfaces of the two end plates have at least one through hole therein that covers less than 40 percent of the vertebral body contacting surfaces, and wherein the at least one through hole therein extends longitudinally from one side of each end plate through the end plate to the other side of the end plate for bone growth therein; a connector interconnecting the inner surfaces of the two end plates in a rigid manner which limits motion between the end plates to less than a total of 5 degrees; and at least one fin projecting from one of the vertebral contacting surfaces, wherein the fin is configured to be inserted into a slot cut in the vertebra to inhibit rotation of the intervertebral spacer with respect to the vertebra.
- Yet another embodiment of the disclosure provides a method of spanning a space formed upon removal of an intervertebral disc, the method including: performing a discectomy to remove disc material between two adjacent vertebral bodies; cutting at least one slot in at least one of the adjacent vertebrae; placing an intervertebral spacer between the two adjacent vertebral bodies, the intervertebral spacer including: two end plates, each end plate having a metallic vertebral body contacting surface, an inner surface and a fin extending from the vertebral body contacting surface; a connector interconnecting the inner surfaces of the two end plates in a rigid manner to limits motion between the end plates; wherein the vertebral body contacting surfaces of the two end plates have at least one through hole therein, wherein the at least one through hole therein extends longitudinally from one side of each end plate through the end plate to the other side of the end plate for bone growth therein; placing a fin on one of the vertebral body contacting surfaces into the at least one slot, whereby the intervertebral spacer is inhibited from rotating; and maintaining the disc spaced between the two adjacent vertebral bodies with the intervertebral spacer without the use of bone graft or bridging bone.
-
FIG. 1 is a perspective view of an intervertebral spacer according to one embodiment of the present disclosure; -
FIG. 2 is a cross sectional side view of the intervertebral spacer ofFIG. 1 ; -
FIG. 3 is a top view of the intervertebral spacer ofFIG. 1 ; -
FIG. 4 is a bottom view of the intervertebral spacer ofFIG. 1 ; -
FIG. 5 is a perspective view of an intervertebral spacer according to another embodiment of the present disclosure; -
FIG. 6 is a perspective view of an intervertebral spacer according to an embodiment with added screw fixation; and -
FIG. 7 is a perspective view of a further intervertebral spacer with added screw fixation. - Various embodiments of the present disclosure generally provide for an intervertebral spacer having upper and lower plates connected by a central connector which is substantially rigid. The intervertebral spacer according to the present disclosure can maintain disc height and prevent subsidence with a large vertebral body contacting surface area while substantially reducing recovery time by eliminating the need for bridging bone. The fusion spacer described herein is designed particularly for patients who are not candidates for total disc replacement.
- One example of an
intervertebral spacer 10 for maintaining disc height between two adjacent vertebral discs is shown inFIG. 1 . The spacer includes twoend plates surface 24 and aninner surface 26, and aconnector 30 interconnecting the inner surfaces of the two end plates in a substantially rigid manner. Theintervertebral spacer 10 when implanted between two vertebral discs maintains a desirable disc space between the two adjacent discs similar to that provided by a natural disc and eliminates the long recovery time required to grow bridging bone which is required in the traditional fusion surgery. - Although the
connector 30 has been shown as circular in cross section, other shapes may be used including oval, elliptical, or rectangular. Although the connector has been shown as a solid member connecting theplates FIGS. 6 and 7 . Alternatively, multiple connectors can be arranged in a pattern, such as a rectangular pattern, or a hollow cylindrical connector can be used. - In some embodiments, the
outer surface 24 is planar. Oftentimes, theouter surface 24 will include one or more surface features and/or materials to enhance attachment of thespacer 10 to vertebral bone. For example, as shown inFIG. 2 , theouter surface 24 may be machined to haveserrations 40 or other surface features for promoting adhesion of theplates serrations 40 are pyramid shaped serrations extending in mutually orthogonal directions and arranged on opposite sides of afin 50. Theserrations 40 may also be disposed in a region betweenfins 52 when theouter surface 24 has two fins. Other geometries such as teeth, grooves, ridges, pins, barbs or the like would also be useful in increasing fixation of thespacer 10 to the adjacent vertebral bodies. When the bone integration structures are ridges, teeth, barbs or similar structures, they may be angled to ease insertion and prevent migration. These bone integration structures can be used to precisely cut the bone during implantation to cause bleeding bone and encourage bone integration. Additionally, theouter surface 24 may be provided with a rough microfinish formed by blasting with aluminum oxide microparticles or the like to improve bone integration. In some embodiments, the outer surface may also be titanium plasma sprayed or HA coated to further enhance attachment of theouter surface 24 to vertebral bone. - The
outer surface 24 may also carry one or moreupstanding fins fins fins fins transverse holes 54 for bone ingrowth. Thetransverse holes 54 may be formed in any shape and may extend partially or all the way through thefins fins - The
fins plates fins surface 24 at an angle other than 90°. For example on one or more of theplates multiple fins 52 are attached to thesurface 24 the fins may be canted away from one another with the bases slightly closer together than their edges at an angle such as about 80-88 degrees. Thefins fins FIG. 1 illustrates a combination of afirst plate 20 with asingle fin 50 and asecond plate 22 with adouble fin 52. This arrangement is useful for double level disc replacements and utilizes offset slots in the vertebral body to prevent the rare occurrence of vertebral body splitting by avoiding cuts to the vertebral body in the same plane for multi-level implants. - The
spacer 10 has been shown with thefins spacer 10 ofFIG. 1 theupper fin 50 may be replaced with a screw while the twolower fins 52 remain. Theplates plate - The upper and
lower plates connector 30 may be constructed from any suitable metal, alloy or combination of metals or alloys, such as but not limited to cobalt chrome alloys, titanium (such as grade 5 titanium), titanium based alloys, tantalum, nickel titanium alloys, stainless steel, and/or the like. They may also be formed of ceramics, biologically compatible polymers including PEEK, UHMWPE (ultra high molecular weight polyethylene) or fiber reinforced polymers. However, the vertebral contactingsurfaces 24 are formed of a metal or other material with good bone integration properties. The metallic vertebralbody contacting surfaces 24 may be coated or otherwise covered with the metal for fixation. Theplates connector 20 may be formed of a one piece construction or may be formed of more than one piece, such as different materials coupled together. When thespacer 10 is formed of multiple materials these materials are fixed together to form a unitary one piece spacer structure without separately moving parts. - Different materials may be used for different parts of the
spacer 10 to optimize imaging characteristics. For example, the plates may be formed of titanium while the connector is formed of cobalt chromium alloy for improved imaging of the plates. Cobalt chrome molybdenum alloys when used for theplates - As shown in
FIG. 5 , somelimited holes 60 may also be provided in theplates spacer 10 of the present disclosure, the load transfer is spread across a larger area. If theouter surfaces 24 haveholes 60 therein, the holes will cover less than 40 percent of theouter surface 24 which contacts the bone to prevent subsidence of the plates into the vertebral bodies. Preferably the holes will cover less than 25 percent, and more preferably less than 10 percent of the outer bone contacting surfaces. At the option of the surgeon, when thesmall holes 60 are present in theplates inner surfaces 26 of the plates to encourage bone to grow through the plates. Theholes 60, when present can take on a variety of shapes including circular, as shown, rectangular, polygonal or other irregular shapes. Theholes 60 may extend through the various parts of the spacer including through the connector or through the fins. Theholes 60 may change shape or size as they pass through portions of the spacer, for example, holes through the plates and the connector may taper to a smaller interior diameter. - The typical fusion spacer requires bleeding bone to stimulate the growth of bridging bone. In this typical method, the cortical endplates are damaged purposefully to obtain bleeding by rasping or cutting the bone. This damage weakens the bone and can cause subsidence of the spacer. The
spacer 10 described herein does not rely on bridging bone and does not require damaging the bone to cause bleeding. Thespacer 10 can be implanted after simply cleaning the disc space and cutting slots into the vertebral endplates configured to receive thefins -
FIG. 6 shows another embodiment of aspacer 100 having asingle fin 50 on the top and bottom and twofixation screws 70 extending at an angle of about 30 to about 60 degrees with respect to the vertebralbody contacting surfaces 24 of the spacer. Thespacer 100 also includes aconnector 30 between the vertebralbody contacting surfaces 24 which is formed in one piece with the upper and lower plates. The fixation screws 70 can include a locking mechanism, such as a locking thread or a separate locking member which is inserted into the screw holes 80 after the screws are inserted to prevent backing out of the screws. -
FIG. 7 illustrates an alternative embodiment of a spacer 110 having a singlesuperior fin 50, twoinferior fins 52, and three alternatingholes 80 for receiving bone screws (not shown). The spacer 110 has multiple fixation structures to provide the patient near immediate mobility after the fusion procedure. As an alternative to the alternatingangled holes 80, the spacer 110 can be formed with an anterior flange extending from the top and the bottom at the anterior side of the plate. This optional flange can include one or more holes for receiving bone screws placed laterally. The laterally placed bone screws can prevent interference in the event of multilevel fusions and are particularly useful for a cervical fusion where space is more limited. - The
intervertebral spacer 10 shown herein is configured for placement in a lumbar intervertebral space from an anterior approach. It should be understood that all approaches can be used including PLIF (posterior lumbar interbody fusion), TLIF (transverse lumbar interbody fusion), XLIF (Lateral extracavitary interbody fusion), ALIF (anterior lumbar interbody fusion), trans-sacral, and other approaches. The shape of the intervertebral spacer would be modified depending on the approach. For example, for a posterior approach, the spacer may include two separate smaller spacers which are either positioned separately side-by-side in the intervertebral space or two spacers which are joined together once inside the intervertebral space. For a lateral approach, the intervertebral spacer may be formed in a more elongated, kidney bean or banana shape with a transversely oriented fin. - The
spacers spacers connector 30 before or after implantation. The spacers preferably are sized to provide substantial coverage of the vertebral surfaces. For example in an anterior procedure, the plates are sized to cover at least 50 percent of the vertebral surface, and preferably cover at least 70 percent of the vertebral surface. In posterior or lateral procedures the coverage of the vertebral surface may be somewhat smaller due to the small size of the access area, i.e. the posterior or lateral spacers may cover about 40 percent or more of the vertebral surface with a one or two part spacer, and preferably at least 50 percent of the vertebral surface. - The size of the
intervertebral spacers intervertebral spacers - One common fusion procedure, referred to as an anterior/posterior fusion, uses of one or more fusion cages to maintain the disc space while bridging bone grows and also uses a system of posterior screws and rods for further stabilization. Fusing both the front and back provides a high degree of stability for the spine and a large surface area for the bone fusion to occur. Also, approaching both sides of the spine often allows for a more aggressive reduction of motion for patients who have deformity in the lower back (e.g. isthmic spondylolisthesis).
- According to a method of the present disclosure, the anterior approach is performed first by removing the disc material and cutting the anterior longitudinal ligament (which lays on the front of the disc space). The spacer is positioned anteriorly and then the patient is turned over for the implantation of a posterior stabilization system. The intervertebral spacers of the present disclosure may be used in combination with a posterior stabilization system, dynamic rod stabilization system, or interspinous spacer to achieve the anterior/posterior fusion.
- In another example, a posterior intervertebral spacer formed in two parts can be used with a posterior stabilization system including screws and rods. This system provides the advantage of maintenance of disc height and stabilization with an entirely posterior approach.
- While the exemplary embodiments have been described in some detail, by way of example and for clarity of understanding, those of skill in the art will recognize that a variety of modifications, adaptations, and changes may be employed. Hence, the scope of the present disclosure should be limited solely by the appended claims.
Claims (20)
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Families Citing this family (66)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004026187A1 (en) | 2002-09-19 | 2004-04-01 | Malan De Villiers | Intervertebral prosthesis |
EP1587437B1 (en) | 2003-01-31 | 2013-02-27 | Spinalmotion, Inc. | Spinal midline indicator |
JP4275699B2 (en) | 2003-01-31 | 2009-06-10 | スパイナルモーション, インコーポレイテッド | Intervertebral prosthesis placement instrument |
MXPA05008653A (en) | 2003-02-14 | 2006-04-27 | Depuy Spine Inc | In-situ formed intervertebral fusion device and method. |
US10052211B2 (en) | 2003-05-27 | 2018-08-21 | Simplify Medical Pty Ltd. | Prosthetic disc for intervertebral insertion |
US7575599B2 (en) | 2004-07-30 | 2009-08-18 | Spinalmotion, Inc. | Intervertebral prosthetic disc with metallic core |
WO2004105638A2 (en) | 2003-05-27 | 2004-12-09 | Spinalmotion, Inc. | Prosthetic disc for intervertebral insertion |
US20040267367A1 (en) | 2003-06-30 | 2004-12-30 | Depuy Acromed, Inc | Intervertebral implant with conformable endplate |
US8636802B2 (en) | 2004-03-06 | 2014-01-28 | DePuy Synthes Products, LLC | Dynamized interspinal implant |
US7585326B2 (en) | 2004-08-06 | 2009-09-08 | Spinalmotion, Inc. | Methods and apparatus for intervertebral disc prosthesis insertion |
JP2009533187A (en) | 2006-04-12 | 2009-09-17 | スパイナルモーション, インコーポレイテッド | Posterior spine apparatus and method |
US8105382B2 (en) | 2006-12-07 | 2012-01-31 | Interventional Spine, Inc. | Intervertebral implant |
US8900307B2 (en) | 2007-06-26 | 2014-12-02 | DePuy Synthes Products, LLC | Highly lordosed fusion cage |
US20090043391A1 (en) | 2007-08-09 | 2009-02-12 | Spinalmotion, Inc. | Customized Intervertebral Prosthetic Disc with Shock Absorption |
WO2009055478A1 (en) * | 2007-10-22 | 2009-04-30 | Spinalmotion, Inc. | Vertebral body replacement and method for spanning a space formed upon removal of a vertebral body |
CA2710142A1 (en) | 2008-01-17 | 2009-07-23 | Beat Lechmann | An expandable intervertebral implant and associated method of manufacturing the same |
US8764833B2 (en) | 2008-03-11 | 2014-07-01 | Spinalmotion, Inc. | Artificial intervertebral disc with lower height |
CN102036623A (en) | 2008-04-05 | 2011-04-27 | 斯恩蒂斯有限公司 | Expandable intervertebral implant |
US9034038B2 (en) | 2008-04-11 | 2015-05-19 | Spinalmotion, Inc. | Motion limiting insert for an artificial intervertebral disc |
EP2278941A1 (en) | 2008-05-05 | 2011-02-02 | Spinalmotion Inc. | Polyaryletherketone artificial intervertebral disc |
US9220603B2 (en) | 2008-07-02 | 2015-12-29 | Simplify Medical, Inc. | Limited motion prosthetic intervertebral disc |
WO2010009151A2 (en) | 2008-07-17 | 2010-01-21 | Spinalmotion, Inc. | Artificial intervertebral disc placement system |
EP2299941A1 (en) | 2008-07-18 | 2011-03-30 | Spinalmotion Inc. | Posterior prosthetic intervertebral disc |
US20100222750A1 (en) * | 2009-02-27 | 2010-09-02 | Vanderbilt University | Replenishable drug delivery implant for bone and cartilage |
US9526620B2 (en) | 2009-03-30 | 2016-12-27 | DePuy Synthes Products, Inc. | Zero profile spinal fusion cage |
US9393129B2 (en) | 2009-12-10 | 2016-07-19 | DePuy Synthes Products, Inc. | Bellows-like expandable interbody fusion cage |
US9554909B2 (en) | 2012-07-20 | 2017-01-31 | Jcbd, Llc | Orthopedic anchoring system and methods |
US9381045B2 (en) | 2010-01-13 | 2016-07-05 | Jcbd, Llc | Sacroiliac joint implant and sacroiliac joint instrument for fusing a sacroiliac joint |
US9333090B2 (en) | 2010-01-13 | 2016-05-10 | Jcbd, Llc | Systems for and methods of fusing a sacroiliac joint |
US9421109B2 (en) | 2010-01-13 | 2016-08-23 | Jcbd, Llc | Systems and methods of fusing a sacroiliac joint |
CA3002234C (en) | 2010-01-13 | 2020-07-28 | Jcbd, Llc | Sacroiliac joint fixation fusion system |
US9788961B2 (en) | 2010-01-13 | 2017-10-17 | Jcbd, Llc | Sacroiliac joint implant system |
US9757154B2 (en) | 2010-01-13 | 2017-09-12 | Jcbd, Llc | Systems and methods for fusing a sacroiliac joint and anchoring an orthopedic appliance |
US8956414B2 (en) | 2010-04-21 | 2015-02-17 | Spinecraft, LLC | Intervertebral body implant, instrument and method |
US8979860B2 (en) | 2010-06-24 | 2015-03-17 | DePuy Synthes Products. LLC | Enhanced cage insertion device |
US9592063B2 (en) | 2010-06-24 | 2017-03-14 | DePuy Synthes Products, Inc. | Universal trial for lateral cages |
EP2588034B1 (en) | 2010-06-29 | 2018-01-03 | Synthes GmbH | Distractible intervertebral implant |
EP2603178B1 (en) * | 2010-08-13 | 2019-07-24 | Smith & Nephew, Inc. | Methods for optimizing parameters of orthopaedic procedures |
US9402732B2 (en) | 2010-10-11 | 2016-08-02 | DePuy Synthes Products, Inc. | Expandable interspinous process spacer implant |
US9700425B1 (en) * | 2011-03-20 | 2017-07-11 | Nuvasive, Inc. | Vertebral body replacement and insertion methods |
US8945228B2 (en) | 2012-11-15 | 2015-02-03 | DePuy Synthes Products, LLC | Endplate for a vertebral implant |
US9522070B2 (en) | 2013-03-07 | 2016-12-20 | Interventional Spine, Inc. | Intervertebral implant |
US9968460B2 (en) | 2013-03-15 | 2018-05-15 | Medsmart Innovation Inc. | Dynamic spinal segment replacement |
US10245087B2 (en) | 2013-03-15 | 2019-04-02 | Jcbd, Llc | Systems and methods for fusing a sacroiliac joint and anchoring an orthopedic appliance |
US9826986B2 (en) | 2013-07-30 | 2017-11-28 | Jcbd, Llc | Systems for and methods of preparing a sacroiliac joint for fusion |
US9717539B2 (en) | 2013-07-30 | 2017-08-01 | Jcbd, Llc | Implants, systems, and methods for fusing a sacroiliac joint |
WO2015017593A1 (en) | 2013-07-30 | 2015-02-05 | Jcbd, Llc | Systems for and methods of fusing a sacroiliac joint |
US9211193B2 (en) | 2013-08-30 | 2015-12-15 | Aesculap Implant Systems, Llc | Prosthesis, system and method |
US9801546B2 (en) | 2014-05-27 | 2017-10-31 | Jcbd, Llc | Systems for and methods of diagnosing and treating a sacroiliac joint disorder |
US11426290B2 (en) | 2015-03-06 | 2022-08-30 | DePuy Synthes Products, Inc. | Expandable intervertebral implant, system, kit and method |
US20160270928A1 (en) * | 2015-03-18 | 2016-09-22 | Baui Biotech Co., Ltd. | Spinal spacer |
WO2017190236A1 (en) * | 2016-05-06 | 2017-11-09 | Spinal Resources Inc. | Vertebral implant |
US11596522B2 (en) | 2016-06-28 | 2023-03-07 | Eit Emerging Implant Technologies Gmbh | Expandable and angularly adjustable intervertebral cages with articulating joint |
JP6995789B2 (en) | 2016-06-28 | 2022-01-17 | イーアイティー・エマージング・インプラント・テクノロジーズ・ゲーエムベーハー | Expandable and angle adjustable intervertebral cage |
US10888433B2 (en) | 2016-12-14 | 2021-01-12 | DePuy Synthes Products, Inc. | Intervertebral implant inserter and related methods |
US10687960B2 (en) * | 2017-04-25 | 2020-06-23 | Second Affiliated Hospital Of Second Military Mediccal University, Shanghai | Assembled vertebral body |
US10398563B2 (en) | 2017-05-08 | 2019-09-03 | Medos International Sarl | Expandable cage |
US11344424B2 (en) | 2017-06-14 | 2022-05-31 | Medos International Sarl | Expandable intervertebral implant and related methods |
US10940016B2 (en) | 2017-07-05 | 2021-03-09 | Medos International Sarl | Expandable intervertebral fusion cage |
US10603055B2 (en) | 2017-09-15 | 2020-03-31 | Jcbd, Llc | Systems for and methods of preparing and fusing a sacroiliac joint |
US11446156B2 (en) | 2018-10-25 | 2022-09-20 | Medos International Sarl | Expandable intervertebral implant, inserter instrument, and related methods |
TWI768260B (en) * | 2019-11-08 | 2022-06-21 | 財團法人工業技術研究院 | Vertebra reconstruction implant |
US11426286B2 (en) | 2020-03-06 | 2022-08-30 | Eit Emerging Implant Technologies Gmbh | Expandable intervertebral implant |
US20220008211A1 (en) * | 2020-07-08 | 2022-01-13 | Ctl Medical Corporation | Cage with keel |
US11850160B2 (en) | 2021-03-26 | 2023-12-26 | Medos International Sarl | Expandable lordotic intervertebral fusion cage |
US11752009B2 (en) | 2021-04-06 | 2023-09-12 | Medos International Sarl | Expandable intervertebral fusion cage |
Family Cites Families (377)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE391122B (en) * | 1971-01-25 | 1977-02-07 | Cutter Lab | PROTESTS IN THE FORM OF A SPINE BONIC DISC AND PROCEDURES FOR MANUFACTURE THEREOF |
CH640131A5 (en) | 1979-10-03 | 1983-12-30 | Sulzer Ag | Complete intervertebral prosthesis |
US4309777A (en) * | 1980-11-13 | 1982-01-12 | Patil Arun A | Artificial intervertebral disc |
US4531917A (en) | 1984-04-02 | 1985-07-30 | Linkow Leonard I | Detachable post for an osseous implant |
US4566466A (en) * | 1984-04-16 | 1986-01-28 | Ripple Dale B | Surgical instrument |
ATE44871T1 (en) * | 1984-09-04 | 1989-08-15 | Univ Berlin Humboldt | DISC PROSTHESIS. |
US4619660A (en) | 1984-10-15 | 1986-10-28 | Christiansen Jean E | Compressible rotational artificial joint |
US4673407A (en) | 1985-02-20 | 1987-06-16 | Martin Daniel L | Joint-replacement prosthetic device |
JPH07121265B2 (en) | 1986-12-26 | 1995-12-25 | 京セラ株式会社 | Cervical artificial disc |
CH671691A5 (en) * | 1987-01-08 | 1989-09-29 | Sulzer Ag | |
US4834757A (en) | 1987-01-22 | 1989-05-30 | Brantigan John W | Prosthetic implant |
CA1283501C (en) | 1987-02-12 | 1991-04-30 | Thomas P. Hedman | Artificial spinal disc |
US4863477A (en) | 1987-05-12 | 1989-09-05 | Monson Gary L | Synthetic intervertebral disc prosthesis |
CH672589A5 (en) * | 1987-07-09 | 1989-12-15 | Sulzer Ag | |
GB8718627D0 (en) * | 1987-08-06 | 1987-09-09 | Showell A W Sugicraft Ltd | Spinal implants |
JPH01136655A (en) | 1987-11-24 | 1989-05-29 | Asahi Optical Co Ltd | Movable type pyramid spacer |
US4874389A (en) | 1987-12-07 | 1989-10-17 | Downey Ernest L | Replacement disc |
US5195526A (en) * | 1988-03-11 | 1993-03-23 | Michelson Gary K | Spinal marker needle |
DE3809793A1 (en) | 1988-03-23 | 1989-10-05 | Link Waldemar Gmbh Co | SURGICAL INSTRUMENT SET |
US5593409A (en) | 1988-06-13 | 1997-01-14 | Sofamor Danek Group, Inc. | Interbody spinal fusion implants |
US5015247A (en) | 1988-06-13 | 1991-05-14 | Michelson Gary K | Threaded spinal implant |
AU7139994A (en) | 1988-06-13 | 1995-01-03 | Karlin Technology, Inc. | Apparatus and method of inserting spinal implants |
US5484437A (en) * | 1988-06-13 | 1996-01-16 | Michelson; Gary K. | Apparatus and method of inserting spinal implants |
US5772661A (en) | 1988-06-13 | 1998-06-30 | Michelson; Gary Karlin | Methods and instrumentation for the surgical correction of human thoracic and lumbar spinal disease from the antero-lateral aspect of the spine |
US5609635A (en) | 1988-06-28 | 1997-03-11 | Michelson; Gary K. | Lordotic interbody spinal fusion implants |
CA1318469C (en) | 1989-02-15 | 1993-06-01 | Acromed Corporation | Artificial disc |
DE8912648U1 (en) | 1989-10-23 | 1990-11-22 | Mecron Medizinische Produkte Gmbh, 1000 Berlin, De | |
US5057108A (en) | 1990-01-12 | 1991-10-15 | Zimmer, Inc. | Method of surface finishing orthopedic implant devices |
FR2659226B1 (en) * | 1990-03-07 | 1992-05-29 | Jbs Sa | PROSTHESIS FOR INTERVERTEBRAL DISCS AND ITS IMPLEMENTATION INSTRUMENTS. |
US5192327A (en) * | 1991-03-22 | 1993-03-09 | Brantigan John W | Surgical prosthetic implant for vertebrae |
GB9110778D0 (en) | 1991-05-18 | 1991-07-10 | Middleton Jeffrey K | Apparatus for use in surgery |
US5320644A (en) | 1991-08-30 | 1994-06-14 | Sulzer Brothers Limited | Intervertebral disk prosthesis |
US20040015236A1 (en) | 1991-11-18 | 2004-01-22 | Sarfarazi Faezeh M. | Sarfarazi elliptical accommodative intraocular lens for small incision surgery |
GB9125798D0 (en) | 1991-12-04 | 1992-02-05 | Customflex Limited | Improvements in or relating to spinal vertebrae implants |
US5258031A (en) | 1992-01-06 | 1993-11-02 | Danek Medical | Intervertebral disk arthroplasty |
US5425773A (en) * | 1992-01-06 | 1995-06-20 | Danek Medical, Inc. | Intervertebral disk arthroplasty device |
EP0555033B1 (en) | 1992-02-07 | 1999-05-26 | Smith & Nephew, Inc. | Surface hardened biocompatible metallic medical implants |
US5282861A (en) * | 1992-03-11 | 1994-02-01 | Ultramet | Open cell tantalum structures for cancellous bone implants and cell and tissue receptors |
DE4208116C2 (en) * | 1992-03-13 | 1995-08-03 | Link Waldemar Gmbh Co | Intervertebral disc prosthesis |
DE4208115A1 (en) | 1992-03-13 | 1993-09-16 | Link Waldemar Gmbh Co | DISC ENDOPROTHESIS |
ATE141149T1 (en) | 1992-04-21 | 1996-08-15 | Sulzer Medizinaltechnik Ag | ARTIFICIAL DISC BODY |
DE4233978C1 (en) | 1992-10-08 | 1994-04-21 | Leibinger Gmbh | Body marking device for medical examinations |
US5676701A (en) | 1993-01-14 | 1997-10-14 | Smith & Nephew, Inc. | Low wear artificial spinal disc |
DE69428143T2 (en) | 1993-02-09 | 2002-05-29 | Depuy Acromed Inc | disc |
JP3695755B2 (en) * | 1993-02-10 | 2005-09-14 | ジンマー スパイン、インク. | Spinal fusion surgery tool kit |
DK0703757T3 (en) | 1993-06-10 | 2003-12-29 | Karlin Technology Inc | Spinal implant insertion device |
FR2707480B1 (en) | 1993-06-28 | 1995-10-20 | Bisserie Michel | Intervertebral disc prosthesis. |
US5423816A (en) * | 1993-07-29 | 1995-06-13 | Lin; Chih I. | Intervertebral locking device |
US5899911A (en) | 1993-08-25 | 1999-05-04 | Inlet Medical, Inc. | Method of using needle-point suture passer to retract and reinforce ligaments |
US5462575A (en) | 1993-12-23 | 1995-10-31 | Crs Holding, Inc. | Co-Cr-Mo powder metallurgy articles and process for their manufacture |
US5458642A (en) | 1994-01-18 | 1995-10-17 | Beer; John C. | Synthetic intervertebral disc |
US6290726B1 (en) | 2000-01-30 | 2001-09-18 | Diamicron, Inc. | Prosthetic hip joint having sintered polycrystalline diamond compact articulation surfaces |
US5674296A (en) * | 1994-11-14 | 1997-10-07 | Spinal Dynamics Corporation | Human spinal disc prosthesis |
TW316844B (en) | 1994-12-09 | 1997-10-01 | Sofamor Danek Group Inc | |
FR2728159B1 (en) | 1994-12-16 | 1997-06-27 | Tornier Sa | ELASTIC DISC PROSTHESIS |
US6245072B1 (en) * | 1995-03-27 | 2001-06-12 | Sdgi Holdings, Inc. | Methods and instruments for interbody fusion |
US5782919A (en) * | 1995-03-27 | 1998-07-21 | Sdgi Holdings, Inc. | Interbody fusion device and method for restoration of normal spinal anatomy |
FR2734069B1 (en) * | 1995-05-12 | 1997-07-04 | Inst Francais Du Petrole | METHOD FOR PREDICTING, BY AN INVERSION TECHNIQUE, THE EVOLUTION OF THE PRODUCTION OF AN UNDERGROUND DEPOSIT |
US5683391A (en) * | 1995-06-07 | 1997-11-04 | Danek Medical, Inc. | Anterior spinal instrumentation and method for implantation and revision |
US5709683A (en) * | 1995-12-19 | 1998-01-20 | Spine-Tech, Inc. | Interbody bone implant having conjoining stabilization features for bony fusion |
US5683465A (en) | 1996-03-18 | 1997-11-04 | Shinn; Gary Lee | Artificial intervertebral disk prosthesis |
US6159214A (en) | 1996-07-31 | 2000-12-12 | Michelson; Gary K. | Milling instrumentation and method for preparing a space between adjacent vertebral bodies |
US5782832A (en) * | 1996-10-01 | 1998-07-21 | Surgical Dynamics, Inc. | Spinal fusion implant and method of insertion thereof |
US5895428A (en) | 1996-11-01 | 1999-04-20 | Berry; Don | Load bearing spinal joint implant |
US5836948A (en) | 1997-01-02 | 1998-11-17 | Saint Francis Medical Technologies, Llc | Spine distraction implant and method |
US5728159A (en) * | 1997-01-02 | 1998-03-17 | Musculoskeletal Transplant Foundation | Serrated bone graft |
US6712819B2 (en) | 1998-10-20 | 2004-03-30 | St. Francis Medical Technologies, Inc. | Mating insertion instruments for spinal implants and methods of use |
US6039761A (en) * | 1997-02-12 | 2000-03-21 | Li Medical Technologies, Inc. | Intervertebral spacer and tool and method for emplacement thereof |
IL128261A0 (en) | 1999-01-27 | 1999-11-30 | Disc O Tech Medical Tech Ltd | Expandable element |
JP3955883B2 (en) * | 1997-04-15 | 2007-08-08 | ジンテーズ ゲゼルシャフト ミト ベシュレンクテル ハフツング | Telescopic vertebral body prosthesis |
US6022376A (en) * | 1997-06-06 | 2000-02-08 | Raymedica, Inc. | Percutaneous prosthetic spinal disc nucleus and method of manufacture |
US6146421A (en) | 1997-08-04 | 2000-11-14 | Gordon, Maya, Roberts And Thomas, Number 1, Llc | Multiple axis intervertebral prosthesis |
US5865848A (en) * | 1997-09-12 | 1999-02-02 | Artifex, Ltd. | Dynamic intervertebral spacer and method of use |
US20010016773A1 (en) | 1998-10-15 | 2001-08-23 | Hassan Serhan | Spinal disc |
US5824094A (en) * | 1997-10-17 | 1998-10-20 | Acromed Corporation | Spinal disc |
ES2297898T3 (en) | 1997-10-27 | 2008-05-01 | St. Francis Medical Technologies, Inc. | VERTEBRAL DISTRACTION IMPLANT. |
US6139579A (en) | 1997-10-31 | 2000-10-31 | Depuy Motech Acromed, Inc. | Spinal disc |
US5888226A (en) * | 1997-11-12 | 1999-03-30 | Rogozinski; Chaim | Intervertebral prosthetic disc |
US6162252A (en) | 1997-12-12 | 2000-12-19 | Depuy Acromed, Inc. | Artificial spinal disc |
US6086613A (en) | 1997-12-23 | 2000-07-11 | Depuy Acromed, Inc. | Spacer assembly for use in spinal surgeries |
US6986788B2 (en) * | 1998-01-30 | 2006-01-17 | Synthes (U.S.A.) | Intervertebral allograft spacer |
US6143033A (en) | 1998-01-30 | 2000-11-07 | Synthes (Usa) | Allogenic intervertebral implant |
US5989291A (en) * | 1998-02-26 | 1999-11-23 | Third Millennium Engineering, Llc | Intervertebral spacer device |
WO1999049818A1 (en) | 1998-03-30 | 1999-10-07 | Marchosky J Alexander | Prosthetic system |
US6019792A (en) * | 1998-04-23 | 2000-02-01 | Cauthen Research Group, Inc. | Articulating spinal implant |
US6679915B1 (en) * | 1998-04-23 | 2004-01-20 | Sdgi Holdings, Inc. | Articulating spinal implant |
US6132465A (en) | 1998-06-04 | 2000-10-17 | Raymedica, Inc. | Tapered prosthetic spinal disc nucleus |
EP1681021A3 (en) * | 1998-06-09 | 2009-04-15 | Warsaw Orthopedic, Inc. | Abrading element for preparing a space between adjacent vertebral bodies |
US6083228A (en) | 1998-06-09 | 2000-07-04 | Michelson; Gary K. | Device and method for preparing a space between adjacent vertebrae to receive an insert |
US6126689A (en) | 1998-06-15 | 2000-10-03 | Expanding Concepts, L.L.C. | Collapsible and expandable interbody fusion device |
US6296664B1 (en) * | 1998-06-17 | 2001-10-02 | Surgical Dynamics, Inc. | Artificial intervertebral disc |
US6136031A (en) * | 1998-06-17 | 2000-10-24 | Surgical Dynamics, Inc. | Artificial intervertebral disc |
US5989251A (en) * | 1998-06-17 | 1999-11-23 | Surgical Dynamics, Inc. | Apparatus for spinal stabilization |
GB2338652A (en) | 1998-06-23 | 1999-12-29 | Biomet Merck Ltd | Vertebral body replacement |
US6231609B1 (en) | 1998-07-09 | 2001-05-15 | Hamid M. Mehdizadeh | Disc replacement prosthesis |
US5928284A (en) | 1998-07-09 | 1999-07-27 | Mehdizadeh; Hamid M. | Disc replacement prosthesis |
WO2000004851A1 (en) | 1998-07-22 | 2000-02-03 | Spinal Dynamics Corporation | Threaded cylindrical multidiscoid single or multiple array disc prosthesis |
DE29813139U1 (en) * | 1998-07-23 | 1998-12-03 | Howmedica Gmbh | Vertebral body reconstruction system |
EP1100417B1 (en) | 1998-08-03 | 2004-04-07 | SYNTHES AG Chur | Intervertebral allograft spacer |
US6336941B1 (en) * | 1998-08-14 | 2002-01-08 | G. V. Subba Rao | Modular hip implant with shock absorption system |
JP2002524141A (en) * | 1998-09-04 | 2002-08-06 | スパイナル ダイナミックス コーポレイション | Peanut spectacle-shaped thoracolumbar disc prosthesis containing multiple discs |
DE69940641D1 (en) | 1998-10-02 | 2009-05-07 | Synthes Gmbh | Ffe |
US6159211A (en) * | 1998-10-22 | 2000-12-12 | Depuy Acromed, Inc. | Stackable cage system for corpectomy/vertebrectomy |
US6039763A (en) * | 1998-10-27 | 2000-03-21 | Disc Replacement Technologies, Inc. | Articulating spinal disc prosthesis |
US6174311B1 (en) * | 1998-10-28 | 2001-01-16 | Sdgi Holdings, Inc. | Interbody fusion grafts and instrumentation |
US6193757B1 (en) * | 1998-10-29 | 2001-02-27 | Sdgi Holdings, Inc. | Expandable intervertebral spacers |
FR2787017B1 (en) * | 1998-12-11 | 2001-04-27 | Dimso Sa | INTERVERTEBRAL DISC PROSTHESIS WITH IMPROVED MECHANICAL BEHAVIOR |
FR2787018B1 (en) | 1998-12-11 | 2001-03-02 | Dimso Sa | INTERVERTEBRAL DISC PROSTHESIS WITH LIQUID ENCLOSURE |
FR2787014B1 (en) | 1998-12-11 | 2001-03-02 | Dimso Sa | INTERVERTEBRAL DISC PROSTHESIS WITH REDUCED FRICTION |
FR2787016B1 (en) | 1998-12-11 | 2001-03-02 | Dimso Sa | INTERVERTEBRAL DISK PROSTHESIS |
FR2787015B1 (en) | 1998-12-11 | 2001-04-27 | Dimso Sa | INTERVERTEBRAL DISC PROSTHESIS WITH COMPRESSIBLE BODY |
US6322567B1 (en) | 1998-12-14 | 2001-11-27 | Integrated Surgical Systems, Inc. | Bone motion tracking system |
US6547823B2 (en) | 1999-01-22 | 2003-04-15 | Osteotech, Inc. | Intervertebral implant |
ATE464847T1 (en) | 1999-01-25 | 2010-05-15 | Warsaw Orthopedic Inc | INSTRUMENT FOR CREATION OF AN INTERVERBEL SPACE FOR ACCOMMODATION OF AN IMPLANT |
DE29901611U1 (en) | 1999-01-30 | 1999-04-22 | Aesculap Ag & Co Kg | Surgical instrument for inserting intervertebral implants |
US6743234B2 (en) | 1999-02-04 | 2004-06-01 | Sdgi Holdings, Inc. | Methods and instrumentation for vertebral interbody fusion |
US6648895B2 (en) | 2000-02-04 | 2003-11-18 | Sdgi Holdings, Inc. | Methods and instrumentation for vertebral interbody fusion |
US6368350B1 (en) | 1999-03-11 | 2002-04-09 | Sulzer Spine-Tech Inc. | Intervertebral disc prosthesis and method |
US6558423B1 (en) * | 1999-05-05 | 2003-05-06 | Gary K. Michelson | Interbody spinal fusion implants with multi-lock for locking opposed screws |
US20050234553A1 (en) * | 1999-05-17 | 2005-10-20 | Vanderbilt University | Intervertebral disc replacement prothesis |
US7331994B2 (en) * | 1999-05-17 | 2008-02-19 | Vanderbilt University | Intervertebral disc replacement prosthesis |
US6964686B2 (en) * | 1999-05-17 | 2005-11-15 | Vanderbilt University | Intervertebral disc replacement prosthesis |
US6579321B1 (en) | 1999-05-17 | 2003-06-17 | Vanderbilt University | Intervertebral disc replacement prosthesis |
EP1057462B1 (en) | 1999-05-21 | 2003-04-02 | Waldemar Link (GmbH & Co.) | Intervertebral endoprosthesis with a toothed connection plate |
US6520996B1 (en) * | 1999-06-04 | 2003-02-18 | Depuy Acromed, Incorporated | Orthopedic implant |
US6402785B1 (en) | 1999-06-04 | 2002-06-11 | Sdgi Holdings, Inc. | Artificial disc implant |
JP4192262B2 (en) | 1999-07-02 | 2008-12-10 | スパイン ソリューションズ インコーポレイテッド | Intervertebral implant |
US7201776B2 (en) | 1999-10-08 | 2007-04-10 | Ferree Bret A | Artificial intervertebral disc replacements with endplates |
EP1207821B1 (en) | 1999-08-27 | 2004-08-04 | SYNTHES AG Chur | Intervertebral implant |
DE29924979U1 (en) | 1999-09-14 | 2007-07-12 | Spine Solutions, Inc. | Insertion device for an intervertebral implant |
US6264695B1 (en) | 1999-09-30 | 2001-07-24 | Replication Medical, Inc. | Spinal nucleus implant |
US7201774B2 (en) | 1999-10-08 | 2007-04-10 | Ferree Bret A | Artificial intervertebral disc replacements incorporating reinforced wall sections |
FR2799639B1 (en) * | 1999-10-18 | 2002-07-19 | Dimso Sa | TOOTHED FACED INTERVERTEBRAL DISC PROSTHESIS |
US6520967B1 (en) * | 1999-10-20 | 2003-02-18 | Cauthen Research Group, Inc. | Spinal implant insertion instrument for spinal interbody prostheses |
US6530929B1 (en) | 1999-10-20 | 2003-03-11 | Sdgi Holdings, Inc. | Instruments for stabilization of bony structures |
WO2001028469A2 (en) | 1999-10-21 | 2001-04-26 | Sdgi Holdings, Inc. | Devices and techniques for a posterior lateral disc space approach |
US6830570B1 (en) | 1999-10-21 | 2004-12-14 | Sdgi Holdings, Inc. | Devices and techniques for a posterior lateral disc space approach |
US6592624B1 (en) * | 1999-11-24 | 2003-07-15 | Depuy Acromed, Inc. | Prosthetic implant element |
US6827740B1 (en) | 1999-12-08 | 2004-12-07 | Gary K. Michelson | Spinal implant surface configuration |
FR2803741B1 (en) | 2000-01-13 | 2003-04-11 | Jean Claude Bouvet | INTERSOMATIC CAGE |
US7776068B2 (en) | 2003-10-23 | 2010-08-17 | Trans1 Inc. | Spinal motion preservation assemblies |
FR2805733B1 (en) * | 2000-03-03 | 2002-06-07 | Scient X | DISC PROSTHESIS FOR CERVICAL VERTEBRUS |
FR2805985B1 (en) * | 2000-03-10 | 2003-02-07 | Eurosurgical | INTERVERTEBRAL DISK PROSTHESIS |
AR027685A1 (en) | 2000-03-22 | 2003-04-09 | Synthes Ag | METHOD AND METHOD FOR CARRYING OUT |
EP1142544B1 (en) | 2000-04-04 | 2008-03-26 | Link Spine Group, Inc. | Intervertebral implant |
US6821298B1 (en) | 2000-04-18 | 2004-11-23 | Roger P. Jackson | Anterior expandable spinal fusion cage system |
US6478800B1 (en) | 2000-05-08 | 2002-11-12 | Depuy Acromed, Inc. | Medical installation tool |
US6533817B1 (en) * | 2000-06-05 | 2003-03-18 | Raymedica, Inc. | Packaged, partially hydrated prosthetic disc nucleus |
US6852126B2 (en) * | 2000-07-17 | 2005-02-08 | Nuvasive, Inc. | Stackable interlocking intervertebral support system |
DE20012549U1 (en) | 2000-07-20 | 2000-10-12 | Aesculap Ag & Co Kg | Insertion tool for an intervertebral implant |
US20020035400A1 (en) * | 2000-08-08 | 2002-03-21 | Vincent Bryan | Implantable joint prosthesis |
EP1363565A2 (en) | 2000-08-08 | 2003-11-26 | SDGI Holdings, Inc. | Implantable joint prosthesis |
US7601174B2 (en) * | 2000-08-08 | 2009-10-13 | Warsaw Orthopedic, Inc. | Wear-resistant endoprosthetic devices |
US20050154463A1 (en) | 2000-08-30 | 2005-07-14 | Trieu Hal H. | Spinal nucleus replacement implants and methods |
US6666866B2 (en) | 2000-11-07 | 2003-12-23 | Osteotech, Inc. | Spinal intervertebral implant insertion tool |
DE10065232C2 (en) | 2000-12-27 | 2002-11-14 | Ulrich Gmbh & Co Kg | Implant for insertion between the vertebral body and surgical instrument for handling the implant |
CA2436243C (en) * | 2001-01-30 | 2009-05-12 | Synthes (U.S.A.) | Bone implant, in particular, an inter-vertebral implant |
DE60224850T2 (en) | 2001-02-04 | 2009-01-22 | Warsaw Orthopedic, Inc., Warsaw | Instrumentation for introducing and positioning an expandable intervertebral fusion implant |
US6986772B2 (en) | 2001-03-01 | 2006-01-17 | Michelson Gary K | Dynamic lordotic guard with movable extensions for creating an implantation space posteriorly in the lumbar spine |
US6764515B2 (en) * | 2001-02-15 | 2004-07-20 | Spinecore, Inc. | Intervertebral spacer device utilizing a spirally slotted belleville washer and a rotational mounting |
US7235081B2 (en) | 2001-07-16 | 2007-06-26 | Spinecore, Inc. | Wedge plate inserter/impactor and related methods for use in implanting an artificial intervertebral disc |
US6673113B2 (en) | 2001-10-18 | 2004-01-06 | Spinecore, Inc. | Intervertebral spacer device having arch shaped spring elements |
US6863689B2 (en) * | 2001-07-16 | 2005-03-08 | Spinecore, Inc. | Intervertebral spacer having a flexible wire mesh vertebral body contact element |
US7115132B2 (en) | 2001-07-16 | 2006-10-03 | Spinecore, Inc. | Static trials and related instruments and methods for use in implanting an artificial intervertebral disc |
US7169182B2 (en) * | 2001-07-16 | 2007-01-30 | Spinecore, Inc. | Implanting an artificial intervertebral disc |
US6607559B2 (en) | 2001-07-16 | 2003-08-19 | Spine Care, Inc. | Trial intervertebral distraction spacers |
US7575576B2 (en) | 2001-07-16 | 2009-08-18 | Spinecore, Inc. | Wedge ramp distractor and related methods for use in implanting artificial intervertebral discs |
US6896680B2 (en) | 2001-03-01 | 2005-05-24 | Gary K. Michelson | Arcuate dynamic lordotic guard with movable extensions for creating an implantation space posteriorly in the lumbar spine |
US6368351B1 (en) | 2001-03-27 | 2002-04-09 | Bradley J. Glenn | Intervertebral space implant for use in spinal fusion procedures |
EP1250898A1 (en) | 2001-04-05 | 2002-10-23 | Waldemar Link (GmbH & Co.) | Intervertebral disc prosthesis system |
ATE419810T1 (en) | 2001-05-01 | 2009-01-15 | Amedica Corp | RADIO-LUCENT BONE TRANSPLANT |
US6719794B2 (en) | 2001-05-03 | 2004-04-13 | Synthes (U.S.A.) | Intervertebral implant for transforaminal posterior lumbar interbody fusion procedure |
FR2824261B1 (en) * | 2001-05-04 | 2004-05-28 | Ldr Medical | INTERVERTEBRAL DISC PROSTHESIS AND IMPLEMENTATION METHOD AND TOOLS |
US6607558B2 (en) * | 2001-07-03 | 2003-08-19 | Axiomed Spine Corporation | Artificial disc |
US7635368B2 (en) | 2001-07-16 | 2009-12-22 | Spinecore, Inc. | Intervertebral spacer device having simultaneously engageable angled perimeters for manipulation using a surgical tool |
US7160327B2 (en) * | 2001-07-16 | 2007-01-09 | Spinecore, Inc. | Axially compressible artificial intervertebral disc having limited rotation using a captured ball and socket joint with a solid ball and compression locking post |
US6562047B2 (en) | 2001-07-16 | 2003-05-13 | Spine Core, Inc. | Vertebral bone distraction instruments |
US6436102B1 (en) | 2001-07-16 | 2002-08-20 | Third Millennium Engineering, Llc | Method of distracting vertebral bones |
DE60231718D1 (en) | 2001-07-16 | 2009-05-07 | Spinecore Inc | ARTIFICIAL BELT WASH WITH A FORCE RESTORING ELEMENT IN THE FORM OF A WAVE WASHER |
US7153310B2 (en) * | 2001-07-16 | 2006-12-26 | Spinecore, Inc. | Vertebral bone distraction instruments |
US6471725B1 (en) | 2001-07-16 | 2002-10-29 | Third Millenium Engineering, Llc | Porous intervertebral distraction spacers |
US6478801B1 (en) * | 2001-07-16 | 2002-11-12 | Third Millennium Engineering, Llc | Insertion tool for use with tapered trial intervertebral distraction spacers |
US7182784B2 (en) * | 2001-07-18 | 2007-02-27 | Smith & Nephew, Inc. | Prosthetic devices employing oxidized zirconium and other abrasion resistant surfaces contacting surfaces of cross-linked polyethylene |
JP2004537354A (en) * | 2001-07-20 | 2004-12-16 | スパイナル・コンセプツ・インコーポレーテッド | Spinal stabilization system and method |
US6375682B1 (en) | 2001-08-06 | 2002-04-23 | Lewis W. Fleischmann | Collapsible, rotatable and expandable spinal hydraulic prosthetic device |
ATE398431T1 (en) * | 2001-08-24 | 2008-07-15 | Zimmer Gmbh | ARTIFICIAL DISC |
US20030045884A1 (en) * | 2001-09-04 | 2003-03-06 | Bruce Robie | Instrument and system for preparing the disc space between two vertebral bodies |
US6652533B2 (en) | 2001-09-20 | 2003-11-25 | Depuy Acromed, Inc. | Medical inserter tool with slaphammer |
US6648917B2 (en) | 2001-10-17 | 2003-11-18 | Medicinelodge, Inc. | Adjustable bone fusion implant and method |
EP1306064A1 (en) | 2001-10-29 | 2003-05-02 | Waldemar Link (GmbH & Co.) | Instrument for inserting an intervertebral prosthesis |
US6709439B2 (en) | 2001-10-30 | 2004-03-23 | Depuy Spine, Inc. | Slaphammer tool |
CA2460028A1 (en) | 2001-10-30 | 2003-05-08 | Osteotech, Inc. | Bone implant and insertion tools |
US6882562B2 (en) * | 2001-11-01 | 2005-04-19 | Agilent Technologies, Inc. | Method and apparatus for providing pseudo 2-port RAM functionality using a 1-port memory cell |
FR2831796B1 (en) | 2001-11-06 | 2003-12-26 | Ldr Medical | BONE ANCHORING DEVICE FOR PROSTHESIS |
US20030139812A1 (en) * | 2001-11-09 | 2003-07-24 | Javier Garcia | Spinal implant |
US7025787B2 (en) | 2001-11-26 | 2006-04-11 | Sdgi Holdings, Inc. | Implantable joint prosthesis and associated instrumentation |
US7238203B2 (en) | 2001-12-12 | 2007-07-03 | Vita Special Purpose Corporation | Bioactive spinal implants and method of manufacture thereof |
JP2005516648A (en) | 2001-12-13 | 2005-06-09 | エスディージーアイ・ホールディングス・インコーポレーテッド | Instruments and methods for introducing an implant into a vertebral space |
US6740118B2 (en) | 2002-01-09 | 2004-05-25 | Sdgi Holdings, Inc. | Intervertebral prosthetic joint |
US7708776B1 (en) | 2002-01-16 | 2010-05-04 | Nuvasive, Inc. | Intervertebral disk replacement system and methods |
US7011684B2 (en) * | 2002-01-17 | 2006-03-14 | Concept Matrix, Llc | Intervertebral disk prosthesis |
ATE363251T1 (en) | 2002-03-11 | 2007-06-15 | Spinal Concepts Inc | DEVICE FOR INSERTING SPINAL IMPLANTS |
DE50210270D1 (en) | 2002-03-12 | 2007-07-19 | Cervitech Inc | Intervertebral prosthesis, especially for the cervical spine |
EP1344506A1 (en) | 2002-03-12 | 2003-09-17 | Waldemar Link (GmbH & Co.) | Intervertebral prosthesis for the cervical spine |
EP1344507A1 (en) | 2002-03-12 | 2003-09-17 | Waldemar Link (GmbH & Co.) | Intervertebral prosthesis for the cervical spine |
DE50213818D1 (en) | 2002-03-12 | 2009-10-15 | Cervitech Inc | Intrumentarium for the insertion of an intervertebral prosthesis |
US6991653B2 (en) * | 2002-03-21 | 2006-01-31 | Sdgi Holdings, Inc. | Vertebral body and disc space replacement devices |
US7309358B2 (en) * | 2002-03-21 | 2007-12-18 | Warsaw Orthopedic, Inc. | Vertebral body and disc space replacement devices |
US6726720B2 (en) | 2002-03-27 | 2004-04-27 | Depuy Spine, Inc. | Modular disc prosthesis |
CA2375070C (en) | 2002-03-28 | 2004-03-02 | 4254563 Manitoba Ltd. | Patch plug |
US20030195631A1 (en) | 2002-04-12 | 2003-10-16 | Ferree Bret A. | Shape-memory spacers for artificial disc replacements |
US8038713B2 (en) | 2002-04-23 | 2011-10-18 | Spinecore, Inc. | Two-component artificial disc replacements |
US6706068B2 (en) | 2002-04-23 | 2004-03-16 | Bret A. Ferree | Artificial disc replacements with natural kinematics |
US20040030391A1 (en) * | 2002-04-24 | 2004-02-12 | Bret Ferree | Artificial intervertebral disc spacers |
US7179294B2 (en) * | 2002-04-25 | 2007-02-20 | Warsaw Orthopedic, Inc. | Articular disc prosthesis and method for implanting the same |
WO2003092507A2 (en) | 2002-05-06 | 2003-11-13 | Sdgi Holdings, Inc. | Instrumentation and methods for preparation of an intervertebral space |
US7066958B2 (en) * | 2002-05-10 | 2006-06-27 | Ferree Bret A | Prosthetic components with partially contained compressible resilient members |
US6689132B2 (en) * | 2002-05-15 | 2004-02-10 | Spineco, Inc. | Spinal implant insertion tool |
US6770095B2 (en) * | 2002-06-18 | 2004-08-03 | Depuy Acroned, Inc. | Intervertebral disc |
US6858038B2 (en) | 2002-06-21 | 2005-02-22 | Richard R. Heuser | Stent system |
US7087055B2 (en) | 2002-06-25 | 2006-08-08 | Sdgi Holdings, Inc. | Minimally invasive expanding spacer and method |
US6793678B2 (en) * | 2002-06-27 | 2004-09-21 | Depuy Acromed, Inc. | Prosthetic intervertebral motion disc having dampening |
US6723097B2 (en) | 2002-07-23 | 2004-04-20 | Depuy Spine, Inc. | Surgical trial implant |
US7901407B2 (en) * | 2002-08-02 | 2011-03-08 | Boston Scientific Scimed, Inc. | Media delivery device for bone structures |
CA2495404C (en) | 2002-08-15 | 2011-05-03 | Justin K. Coppes | Intervertebral disc implant |
WO2004016217A2 (en) | 2002-08-15 | 2004-02-26 | David Gerber | Controlled artificial intervertebral disc implant |
US20060293753A1 (en) | 2002-08-19 | 2006-12-28 | Lanx, Llc | Corrective artificial disc |
WO2004024037A1 (en) | 2002-09-10 | 2004-03-25 | Ferree Bret A | Shock-absorbing joint and spine replacements |
DE10242329B4 (en) | 2002-09-12 | 2005-03-17 | Biedermann Motech Gmbh | Disc prosthesis |
WO2004026187A1 (en) | 2002-09-19 | 2004-04-01 | Malan De Villiers | Intervertebral prosthesis |
CA2499183A1 (en) * | 2002-09-20 | 2004-04-01 | Sdgi Holdings, Inc. | Instrument and method for extraction of an implant |
US6899735B2 (en) | 2002-10-02 | 2005-05-31 | Sdgi Holdings, Inc. | Modular intervertebral prosthesis system |
US20040068320A1 (en) * | 2002-10-04 | 2004-04-08 | Robie Bruce H. | Prosthetic disc and vertebral body replacement device having pyrolytic carbon bearing members |
DE10247762A1 (en) | 2002-10-14 | 2004-04-22 | Waldemar Link (Gmbh & Co.) | Intervertebral prosthesis |
US7214243B2 (en) | 2002-10-21 | 2007-05-08 | 3Hbfm, Llc | Intervertebral disk prosthesis |
US7267688B2 (en) * | 2002-10-22 | 2007-09-11 | Ferree Bret A | Biaxial artificial disc replacement |
BR0215928A (en) * | 2002-10-28 | 2005-08-09 | Mathys Medizinaltechnik Ag | Intervertebral disc prosthesis or artificial vertebra |
US6966929B2 (en) | 2002-10-29 | 2005-11-22 | St. Francis Medical Technologies, Inc. | Artificial vertebral disk replacement implant with a spacer |
US7497859B2 (en) | 2002-10-29 | 2009-03-03 | Kyphon Sarl | Tools for implanting an artificial vertebral disk |
US20040133278A1 (en) * | 2002-10-31 | 2004-07-08 | Marino James F. | Spinal disc implant |
EP1567098B1 (en) | 2002-10-31 | 2012-08-29 | Zimmer Spine, Inc. | Movable disc implant |
US20040093087A1 (en) * | 2002-11-05 | 2004-05-13 | Ferree Bret A. | Fluid-filled artificial disc replacement (ADR) |
EP1417940A1 (en) | 2002-11-08 | 2004-05-12 | Waldemar Link (GmbH & Co.) | Vertebral prosthesis |
NZ540265A (en) * | 2002-12-17 | 2006-04-28 | Synthes Gmbh | Intervertebral implant with joint parts mounted on roller bodies |
AU2003297195A1 (en) * | 2002-12-17 | 2004-07-22 | Amedica Corporation | Total disc implant |
BR0215968B1 (en) | 2002-12-17 | 2012-08-21 | intervertebral implant with elements driven by universal joint. | |
CA2510248C (en) | 2002-12-17 | 2011-03-01 | Mathys Medizinaltechnik Ag | Intervertebral implant |
US20040143334A1 (en) * | 2003-01-08 | 2004-07-22 | Ferree Bret A. | Artificial disc replacements (ADRS) with features to enhance longevity and prevent extrusion |
US20040167626A1 (en) | 2003-01-23 | 2004-08-26 | Geremakis Perry A. | Expandable artificial disc prosthesis |
EP1587437B1 (en) | 2003-01-31 | 2013-02-27 | Spinalmotion, Inc. | Spinal midline indicator |
JP4275699B2 (en) * | 2003-01-31 | 2009-06-10 | スパイナルモーション, インコーポレイテッド | Intervertebral prosthesis placement instrument |
US20040158254A1 (en) * | 2003-02-12 | 2004-08-12 | Sdgi Holdings, Inc. | Instrument and method for milling a path into bone |
US7235101B2 (en) * | 2003-09-15 | 2007-06-26 | Warsaw Orthopedic, Inc. | Revisable prosthetic device |
US6908484B2 (en) | 2003-03-06 | 2005-06-21 | Spinecore, Inc. | Cervical disc replacement |
US20040186569A1 (en) * | 2003-03-20 | 2004-09-23 | Berry Bret M. | Height adjustable vertebral body and disc space replacement devices |
US7303582B2 (en) | 2003-03-21 | 2007-12-04 | Advanced Medical Optics, Inc. | Foldable angle-fixated intraocular lens |
US7771478B2 (en) | 2003-04-04 | 2010-08-10 | Theken Spine, Llc | Artificial disc prosthesis |
CN100484499C (en) | 2003-04-14 | 2009-05-06 | 斯恩蒂斯有限公司 | Intervertebral implant |
US7419505B2 (en) | 2003-04-22 | 2008-09-02 | Fleischmann Lewis W | Collapsible, rotatable, and tiltable hydraulic spinal disc prosthesis system with selectable modular components |
US6969405B2 (en) | 2003-04-23 | 2005-11-29 | Loubert Suddaby | Inflatable intervertebral disc replacement prosthesis |
US7407513B2 (en) | 2003-05-02 | 2008-08-05 | Smart Disc, Inc. | Artificial spinal disk |
US7105024B2 (en) * | 2003-05-06 | 2006-09-12 | Aesculap Ii, Inc. | Artificial intervertebral disc |
US20050143824A1 (en) | 2003-05-06 | 2005-06-30 | Marc Richelsoph | Artificial intervertebral disc |
US6966931B2 (en) | 2003-05-21 | 2005-11-22 | Tain-Yew Shi | Artificial intervertebral disc with reliable maneuverability |
US6986771B2 (en) * | 2003-05-23 | 2006-01-17 | Globus Medical, Inc. | Spine stabilization system |
US20090076614A1 (en) | 2007-09-17 | 2009-03-19 | Spinalmotion, Inc. | Intervertebral Prosthetic Disc with Shock Absorption Core |
US7575599B2 (en) | 2004-07-30 | 2009-08-18 | Spinalmotion, Inc. | Intervertebral prosthetic disc with metallic core |
WO2004105638A2 (en) | 2003-05-27 | 2004-12-09 | Spinalmotion, Inc. | Prosthetic disc for intervertebral insertion |
US7270679B2 (en) | 2003-05-30 | 2007-09-18 | Warsaw Orthopedic, Inc. | Implants based on engineered metal matrix composite materials having enhanced imaging and wear resistance |
US20040243238A1 (en) | 2003-06-02 | 2004-12-02 | Uri Arnin | Spinal disc prosthesis |
US7537612B2 (en) * | 2003-06-20 | 2009-05-26 | Warsaw Orthopedic, Inc. | Lumbar composite nucleus |
DE10330699B3 (en) | 2003-07-08 | 2005-02-17 | Aesculap Ag & Co. Kg | Surgical instrument for handling an implant |
DE10330698B4 (en) | 2003-07-08 | 2005-05-25 | Aesculap Ag & Co. Kg | Intervertebral implant |
WO2005004756A2 (en) | 2003-07-12 | 2005-01-20 | Scolio Gmbh | Intervertebral disk prosthesis |
US7320689B2 (en) * | 2003-07-15 | 2008-01-22 | Cervitech, Inc. | Multi-part cervical endoprosthesis with insertion instrument |
US7695515B2 (en) * | 2003-07-15 | 2010-04-13 | Spinal Generations, Llc | Spinal disc prosthesis system |
US20050015095A1 (en) * | 2003-07-15 | 2005-01-20 | Cervitech, Inc. | Insertion instrument for cervical prostheses |
ES2329897T3 (en) * | 2003-07-23 | 2009-12-02 | Ebi, Llc | EXPANSIBLE SPINAL IMPLANT. |
US7044983B1 (en) | 2003-07-24 | 2006-05-16 | Chia Pao Cheng | Positioning and buffering device for artificial knee joint |
US7621956B2 (en) * | 2003-07-31 | 2009-11-24 | Globus Medical, Inc. | Prosthetic spinal disc replacement |
US7022138B2 (en) | 2003-07-31 | 2006-04-04 | Mashburn M Laine | Spinal interbody fusion device and method |
US7153325B2 (en) * | 2003-08-01 | 2006-12-26 | Ultra-Kinetics, Inc. | Prosthetic intervertebral disc and methods for using the same |
US7806932B2 (en) * | 2003-08-01 | 2010-10-05 | Zimmer Spine, Inc. | Spinal implant |
US7235082B2 (en) | 2003-08-12 | 2007-06-26 | Depuy Spine, Inc. | Device for insertion of implants |
US7255714B2 (en) * | 2003-09-30 | 2007-08-14 | Michel H. Malek | Vertically adjustable intervertebral disc prosthesis |
US7819922B2 (en) * | 2003-10-16 | 2010-10-26 | Spinal Generations, Llc | Vertebral prosthesis |
DE102004021861A1 (en) * | 2004-05-04 | 2005-11-24 | Biedermann Motech Gmbh | Implant for temporary or permanent replacement of vertebra or intervertebral disk, comprising solid central element and outer elements with openings |
WO2005041793A2 (en) * | 2003-10-23 | 2005-05-12 | Trans1, Inc. | Spinal mobility preservation apparatus and method |
EP1532950B1 (en) * | 2003-11-18 | 2008-03-26 | Zimmer GmbH | Spinal disc prosthesis |
WO2005053580A1 (en) | 2003-11-28 | 2005-06-16 | Richard Mervyn Walker | An intervertebral prosthesis |
US7217291B2 (en) * | 2003-12-08 | 2007-05-15 | St. Francis Medical Technologies, Inc. | System and method for replacing degenerated spinal disks |
FR2864763B1 (en) | 2004-01-07 | 2006-11-24 | Scient X | PROSTHETIC DISCALE FOR VERTEBRATES |
US7235103B2 (en) * | 2004-01-13 | 2007-06-26 | Rivin Evgeny I | Artificial intervertebral disc |
US20050171604A1 (en) | 2004-01-20 | 2005-08-04 | Alexander Michalow | Unicondylar knee implant |
US7625379B2 (en) | 2004-01-26 | 2009-12-01 | Warsaw Orthopedic, Inc. | Methods and instrumentation for inserting intervertebral grafts and devices |
US7250060B2 (en) * | 2004-01-27 | 2007-07-31 | Sdgi Holdings, Inc. | Hybrid intervertebral disc system |
FR2865629B1 (en) | 2004-02-04 | 2007-01-26 | Ldr Medical | INTERVERTEBRAL DISC PROSTHESIS |
US7214244B2 (en) | 2004-02-19 | 2007-05-08 | Spinecore, Inc. | Artificial intervertebral disc having an articulating joint |
US7083651B2 (en) | 2004-03-03 | 2006-08-01 | Joint Synergy, Llc | Spinal implant |
US7195644B2 (en) | 2004-03-02 | 2007-03-27 | Joint Synergy, Llc | Ball and dual socket joint |
EP1570813A1 (en) | 2004-03-05 | 2005-09-07 | Cervitech, Inc. | Cervical intervertebral disc prosthesis with anti-luxation means, and instrument |
US8070816B2 (en) | 2004-03-29 | 2011-12-06 | 3Hbfm, Llc | Arthroplasty spinal prosthesis and insertion device |
FR2869528B1 (en) * | 2004-04-28 | 2007-02-02 | Ldr Medical | INTERVERTEBRAL DISC PROSTHESIS |
US20050251261A1 (en) | 2004-05-05 | 2005-11-10 | Sdgi Holdings, Inc. | Artificial intervertebral disc for lateral insertion |
US20050256576A1 (en) | 2004-05-13 | 2005-11-17 | Moskowitz Nathan C | Artificial expansile total lumbar and thoracic discs for posterior placement without supplemental instrumentation and its adaptation for anterior placement of artificial cervical, thoracic and lumbar discs |
US8021428B2 (en) * | 2004-06-30 | 2011-09-20 | Depuy Spine, Inc. | Ceramic disc prosthesis |
CA2573340A1 (en) * | 2004-07-09 | 2006-02-16 | Pioneer Laboratories, Inc. | Skeletal reconstruction device |
US20060020342A1 (en) * | 2004-07-21 | 2006-01-26 | Ferree Bret A | Facet-preserving artificial disc replacements |
US7585326B2 (en) | 2004-08-06 | 2009-09-08 | Spinalmotion, Inc. | Methods and apparatus for intervertebral disc prosthesis insertion |
US20060041313A1 (en) * | 2004-08-19 | 2006-02-23 | Sdgi Holdings, Inc. | Intervertebral disc system |
US20060041314A1 (en) * | 2004-08-20 | 2006-02-23 | Thierry Millard | Artificial disc prosthesis |
US20060052870A1 (en) | 2004-09-09 | 2006-03-09 | Ferree Bret A | Methods and apparatus to prevent movement through artificial disc replacements |
US7575600B2 (en) | 2004-09-29 | 2009-08-18 | Kyphon Sarl | Artificial vertebral disk replacement implant with translating articulation contact surface and method |
WO2006042486A1 (en) | 2004-10-18 | 2006-04-27 | Buettner-Janz Karin | Intervertebral disk endoprosthesis having a motion-adapted edge for the lumbar and cervical spine |
US7887589B2 (en) | 2004-11-23 | 2011-02-15 | Glenn Bradley J | Minimally invasive spinal disc stabilizer and insertion tool |
WO2006066228A2 (en) | 2004-12-16 | 2006-06-22 | Innovative Spinal Technologies | Expandable implants for spinal disc replacement |
US8083797B2 (en) * | 2005-02-04 | 2011-12-27 | Spinalmotion, Inc. | Intervertebral prosthetic disc with shock absorption |
US7690381B2 (en) | 2005-02-10 | 2010-04-06 | Depuy Spine, Inc. | Intervertebral prosthetic disc and method for installing using a guidewire |
US20060265077A1 (en) | 2005-02-23 | 2006-11-23 | Zwirkoski Paul A | Spinal repair |
US7722622B2 (en) | 2005-02-25 | 2010-05-25 | Synthes Usa, Llc | Implant insertion apparatus and method of use |
US7578848B2 (en) * | 2005-03-03 | 2009-08-25 | Cervical Xpand, Llc | Intervertebral stabilizer |
AU2006230512A1 (en) * | 2005-03-31 | 2006-10-05 | Life Spine, Inc | Expandable spinal interbody and intravertebral body devices |
US7575580B2 (en) | 2005-04-15 | 2009-08-18 | Warsaw Orthopedic, Inc. | Instruments, implants and methods for positioning implants into a spinal disc space |
US20060235525A1 (en) * | 2005-04-19 | 2006-10-19 | Sdgi Holdings, Inc. | Composite structure for biomedical implants |
US20060241766A1 (en) | 2005-04-20 | 2006-10-26 | Sdgi Holdings, Inc. | Method and apparatus for preventing articulation in an artificial joint |
US20060241641A1 (en) | 2005-04-22 | 2006-10-26 | Sdgi Holdings, Inc. | Methods and instrumentation for distraction and insertion of implants in a spinal disc space |
AU2006242416A1 (en) | 2005-05-02 | 2006-11-09 | Seaspine, Inc. | Motion restoring intervertebral device |
US8323342B2 (en) | 2005-05-17 | 2012-12-04 | Schwab Frank J | Intervertebral implant |
US20060276902A1 (en) | 2005-06-03 | 2006-12-07 | Zipnick Richard I | Minimally invasive apparatus to manipulate and revitalize spinal column disc |
US20060287728A1 (en) | 2005-06-21 | 2006-12-21 | Mokhtar Mourad B | System and method for implanting intervertebral disk prostheses |
US20060293752A1 (en) | 2005-06-27 | 2006-12-28 | Missoum Moumene | Intervertebral disc prosthesis and associated methods |
US20070021837A1 (en) * | 2005-07-20 | 2007-01-25 | Ashman Richard B | Stabilizing augment for prosthetic disc |
GB0516034D0 (en) * | 2005-08-04 | 2005-09-14 | Blacklock T | Orthopaedic medical device |
EP1757243B1 (en) * | 2005-08-24 | 2008-05-28 | BIEDERMANN MOTECH GmbH | Rod-shaped implant element for the application in spine surgery or trauma surgery and stabilization device with such a rod-shaped implant element |
US7731753B2 (en) | 2005-09-01 | 2010-06-08 | Spinal Kinetics, Inc. | Prosthetic intervertebral discs |
US8882841B2 (en) | 2005-09-16 | 2014-11-11 | Us Spine, Inc. | Steerable interbody fusion cage |
US20070067036A1 (en) | 2005-09-20 | 2007-03-22 | Zimmer Spine, Inc. | Hydrogel total disc prosthesis |
CN101296669A (en) | 2005-09-26 | 2008-10-29 | 华沙整形外科股份有限公司 | Hybrid intervertebral spinal fusion implant |
WO2007035968A2 (en) | 2005-09-26 | 2007-03-29 | Warsaw Orthopedic, Inc. | Hybrid intervertebral spinal fusion implant |
US8764832B2 (en) | 2005-09-26 | 2014-07-01 | Warsaw Orhtopedic, Inc. | Anterior hybrid implant |
US8236058B2 (en) | 2005-09-27 | 2012-08-07 | Fabian Henry F | Spine surgery method and implant |
US8202320B2 (en) | 2005-10-31 | 2012-06-19 | Depuy Spine, Inc. | Intervertebral disc prosthesis |
US20070123904A1 (en) | 2005-10-31 | 2007-05-31 | Depuy Spine, Inc. | Distraction instrument and method for distracting an intervertebral site |
US7927373B2 (en) | 2005-10-31 | 2011-04-19 | Depuy Spine, Inc. | Intervertebral disc prosthesis |
US20070123903A1 (en) | 2005-10-31 | 2007-05-31 | Depuy Spine, Inc. | Medical Device installation tool and methods of use |
US20070135923A1 (en) * | 2005-12-14 | 2007-06-14 | Sdgi Holdings, Inc. | Ceramic and polymer prosthetic device |
WO2007075411A2 (en) * | 2005-12-16 | 2007-07-05 | Thomas Haider Patents, A Limited Liability Company | An intervertebral prosthesis for supporting adjacent vertebral bodies enabling the creation of soft fusion and method |
US20070179615A1 (en) | 2006-01-31 | 2007-08-02 | Sdgi Holdings, Inc. | Intervertebral prosthetic disc |
US7708777B2 (en) | 2006-02-03 | 2010-05-04 | Depuy Spine, Inc. | Modular intervertebral disc replacements |
US8556973B2 (en) * | 2006-02-10 | 2013-10-15 | DePuy Synthes Products, LLC | Intervertebral disc prosthesis having multiple bearing surfaces |
US20070233251A1 (en) | 2006-02-18 | 2007-10-04 | Abdou M S | Use of Magnetic Fields in Orthopedic Implants |
WO2007096879A2 (en) * | 2006-02-23 | 2007-08-30 | Faneuil Innovations Investment Ltd. | Intervertebral disc replacement |
US20070270970A1 (en) | 2006-03-14 | 2007-11-22 | Sdgi Holdings, Inc. | Spinal implants with improved wear resistance |
US20070233077A1 (en) | 2006-03-31 | 2007-10-04 | Khalili Farid B | Dynamic intervertebral spacer assembly |
JP2009533187A (en) | 2006-04-12 | 2009-09-17 | スパイナルモーション, インコーポレイテッド | Posterior spine apparatus and method |
US7850736B2 (en) | 2006-04-13 | 2010-12-14 | Warsaw Orthopedic, Inc. | Vertebral fusion implants and methods of use |
WO2008014258A2 (en) * | 2006-07-24 | 2008-01-31 | Spine Solutions, Inc. | Intervertebral implant with keel |
US20080021557A1 (en) * | 2006-07-24 | 2008-01-24 | Warsaw Orthopedic, Inc. | Spinal motion-preserving implants |
US20080051900A1 (en) * | 2006-07-28 | 2008-02-28 | Spinalmotion, Inc. | Spinal Prosthesis with Offset Anchors |
US20080051901A1 (en) * | 2006-07-28 | 2008-02-28 | Spinalmotion, Inc. | Spinal Prosthesis with Multiple Pillar Anchors |
US8057545B2 (en) | 2006-08-25 | 2011-11-15 | Warsaw Orthopedic, Inc. | Revision spacer |
US8025697B2 (en) | 2006-09-21 | 2011-09-27 | Custom Spine, Inc. | Articulating interbody spacer, vertebral body replacement |
US7815683B2 (en) * | 2006-10-16 | 2010-10-19 | Warsaw Orthopedic, Inc. | Implants with helical supports and methods of use for spacing vertebral members |
US8092534B2 (en) * | 2006-11-16 | 2012-01-10 | Warsaw Orthopedic, Inc. | Revision device |
US7972382B2 (en) | 2006-12-26 | 2011-07-05 | Warsaw Orthopedic, Inc. | Minimally invasive spinal distraction devices and methods |
US8298287B2 (en) * | 2007-06-26 | 2012-10-30 | Depuy Spine, Inc. | Intervertebral motion disc with helical shock absorber |
US20090043391A1 (en) * | 2007-08-09 | 2009-02-12 | Spinalmotion, Inc. | Customized Intervertebral Prosthetic Disc with Shock Absorption |
US8282681B2 (en) * | 2007-08-13 | 2012-10-09 | Nuvasive, Inc. | Bioresorbable spinal implant and related methods |
WO2009055478A1 (en) | 2007-10-22 | 2009-04-30 | Spinalmotion, Inc. | Vertebral body replacement and method for spanning a space formed upon removal of a vertebral body |
WO2009094475A1 (en) | 2008-01-25 | 2009-07-30 | Spinalmotion, Inc. | Intervertebral prosthetic disc with shock absorbing core formed with disc springs |
WO2009094477A1 (en) * | 2008-01-25 | 2009-07-30 | Spinalmotion, Inc. | Compliant implantable prosthetic joint with preloaded spring |
US9034038B2 (en) | 2008-04-11 | 2015-05-19 | Spinalmotion, Inc. | Motion limiting insert for an artificial intervertebral disc |
EP2278941A1 (en) | 2008-05-05 | 2011-02-02 | Spinalmotion Inc. | Polyaryletherketone artificial intervertebral disc |
US9220603B2 (en) * | 2008-07-02 | 2015-12-29 | Simplify Medical, Inc. | Limited motion prosthetic intervertebral disc |
US20100004748A1 (en) * | 2008-07-03 | 2010-01-07 | Cordaro Nicholas M | Intervertebral prosthesis |
WO2010009151A2 (en) * | 2008-07-17 | 2010-01-21 | Spinalmotion, Inc. | Artificial intervertebral disc placement system |
EP2299941A1 (en) * | 2008-07-18 | 2011-03-30 | Spinalmotion Inc. | Posterior prosthetic intervertebral disc |
-
2008
- 2008-10-22 WO PCT/US2008/080800 patent/WO2009055478A1/en active Application Filing
- 2008-10-22 US US12/255,731 patent/US20090105833A1/en not_active Abandoned
- 2008-10-22 WO PCT/US2008/080798 patent/WO2009055477A1/en active Application Filing
- 2008-10-22 EP EP08841304A patent/EP2209444A4/en not_active Withdrawn
- 2008-10-22 WO PCT/US2008/080804 patent/WO2009055481A1/en active Application Filing
- 2008-10-22 US US12/255,733 patent/US20090105834A1/en not_active Abandoned
- 2008-10-22 US US12/255,737 patent/US8758441B2/en not_active Ceased
-
2016
- 2016-06-23 US US15/191,385 patent/USRE47470E1/en active Active
- 2016-11-22 US US15/359,298 patent/US11364129B2/en active Active
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2022
- 2022-05-16 US US17/663,445 patent/US20220273459A1/en active Pending
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US8758441B2 (en) | 2014-06-24 |
EP2209444A1 (en) | 2010-07-28 |
US20170071757A1 (en) | 2017-03-16 |
EP2209444A4 (en) | 2013-03-27 |
US11364129B2 (en) | 2022-06-21 |
USRE47470E1 (en) | 2019-07-02 |
US20090105834A1 (en) | 2009-04-23 |
WO2009055481A1 (en) | 2009-04-30 |
US20090105833A1 (en) | 2009-04-23 |
US20090105835A1 (en) | 2009-04-23 |
WO2009055477A1 (en) | 2009-04-30 |
WO2009055478A1 (en) | 2009-04-30 |
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