MX2008004022A - Artificial intervertebral disc - Google Patents

Abstract

The present invention is directed to the field of prosthetic devices. More particularly, one embodiment of the present invention is directed to an artificial disc that can be used as a replacement for an intervertebral disc (e.g., a human intervertebral lumbar disc, a human intervertebral cervical disc and/or a human intervertebral thoracic disc).

Description

ARTIFICIAL INTERVERTEBRAL DISC Field of the Invention The present invention relates to the field of prosthetic devices. More particularly, an embodiment of the present invention relates to an artificial disc that can be used as a replacement for an intervertebral disc (e.g., a human intervertebral lumbar disc, a human intervertebral cervical disc and / or a human intervertebral thoracic disc) .

For the purposes of the present invention the term "column" refers to a hollow or partially hollow, solid structure having any desired aspect ratio and any desired cross section (cross-sectional shape and / or cross-sectional area). In an example (whose example is illustrative and not exhaustive) such a column may have a high aspect ratio from length to width (ie, the column may be "elongated"). In another example (whose example is illustrative and not exhaustive) said column may have a low aspect ratio from length to width (ie, the column may be "plump"). In another example (whose example is illustrative and not exhaustive) the walls of the column can be sufficiently thick to provide a level of inflexibility to the column. In another example (whose example is illustrative and not exhaustive) the walls of the column can be sufficiently thin to provide a substantial level of flexibility to the column. In other examples (examples of which are illustrative and not exhaustive) said column may have a cross section that is circular, oval, square or "kidney-shaped".

In addition, for the purposes of the present patent application the term "filler" (eg, as a column filler) refers to a substance disposed within a space or void that completely or partially fills the volume of the space or void.

Moreover, for the purposes of the present patent application the term "composite structure" refers to a hollow or partially hollow column that includes a filler disposed therein.

Moreover, for the purposes of the present patent application the term "elastomer" includes (in non-limiting form): a silicone, a urethane, a PCV, a thermoplastic elastomer, an alloy of elastomers, a polyurethane / polycarbonate alloy, and / or any combination thereof.

Moreover, for the purposes of the present patent application, the term "biologically acceptable metal" includes (in the taxative): Ti, chrome cobalt, surgical steel and / or any combination thereof.

BACKGROUND OF THE INVENTION As an alternative to spinal fusion techniques, numerous attempts have been made to design an artificial disc to replace, for example, an intervertebral lumbar disc that has been damaged or otherwise diseased.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 shows an exploded view of an artificial intervertebral disc according to an embodiment of the present invention.

Figures 2A-2D show examples of assembly steps associated with the artificial intervertebral disc of Figure 1.

Figure 3 shows a sectional view of the mounted artificial intervertebral disc of Figure 1.

Figure 4 shows an exploded view of an artificial intervertebral disc according to another embodiment of the present invention.

Figures 5A-5D show examples of assembly steps with the artificial intervertebral disc of Figure 4.

Figure 6 shows a sectional view of the mounted artificial intervertebral disc of Figure 4.

Figures 7A-7F show examples of initial attachment mechanisms associated with artificial intervertebral discs according to the present invention.

Figure 8 shows a sectional view of an artificial intervertebral disc according to another embodiment of the present invention.

Figure 9 shows an exploded view of an artificial intervertebral disc according to another embodiment of the present invention.

Figure 10 shows a perspective view of the artificial intervertebral disc of Figure 9.

Figure 11 shows a side view of the artificial intervertebral disc of Figure 9.

Figure 12 shows a top view of the artificial intervertebral disc of Figure 9.

Figures 13A-13F show additional details of the artificial intervertebral disc of Figure 9 (Figure 13A is a top view, Figure 13B is a bottom view, Figure 13C is a side view, Figure 13D is a side view, Figure 13E is a sectional side view (along section BB of Figure 13A) and Figure 13F is a detailed view of part "C" of Figure 13E).

Figures 14A-14D show additional details of a column and crimp rings of the artificial intervertebral disc of Figure 9 (Figure 14A is an exploded view, Figure 14B is a top view, Figure 14C is a side cut view. (along section AA of Figure 14B) and Figure 14D is a detailed view of a portion of Figure 14C).

Figures 15A-15C show additional details of an inner crimping ring of the artificial intervertebral disc of Figure 9 (Figure 15A is a perspective view, Figure 15B is a top view and Figure 15C is a side cut view (FIG. along section AA of Figure 15B).

Figures 16A-16C show details of an outer crimping ring of the artificial intervertebral disc of Figure 9 (Figure 16A is a perspective view, Figure 16B is a top view and Figure 16C is a side cut view (a). along section AA of Figure 16B).

Figures 17A and 17B show additional details of an artificial intervertebral disc column of Figure 9 (Figure 17A is a top view and Figure 17B is a side view).

Figures 18A and 18B show additional details of a column filling of the artificial intervertebral disc of Figure 9 (Figure 18A is a perspective view and Figure 18B is a side view).

Figures 19A-19I show additional details of a top anchor plate (ie, towards the head) of the artificial intervertebral disc of Figure 9.

Figures 20A-20I show additional details of a lower anchor plate (i.e., caudal) of the artificial intervertebral disc of Figure 9.

Figure 21 shows a perspective view of an artificial intervertebral disc according to another embodiment of the present invention.

Figures 22A-22N show diagrams of a surgical technique associated with the present invention.

Figure 23A shows a side view of an artificial intervertebral disc according to another embodiment of the present invention.

Figure 23B shows a cross-sectional view of the artificial intervertebral disc of Figure 23A (taken along line B-B of Figure 23A).

Figure 24 shows an exploded view of an artificial intervertebral disc according to another embodiment of the present invention.

Figure 25 shows a perspective view of the artificial intervertebral disc of Figure 24.

Figure 26 shows a side view of the artificial intervertebral disc of Figure 24.

Figure 27 shows a top view of the artificial intervertebral disc of Figure 24.

Figures 28-33 show additional views of components of an artificial intervertebral disc according to another embodiment of the present invention.

Figures 34-43 show additional views of components of an artificial intervertebral disc according to another embodiment of the present invention.

Among those benefits and improvements that have been disclosed, other objects and advantages of this invention will become apparent from the following description taken in conjunction with the appended figures. The figures constitute a part of this specification and include illustrative embodiments of the present invention and illustrate objectives and features thereof.

Detailed Description of the Invention Detailed embodiments of the present invention are disclosed herein; however, it should be understood that the disclosed embodiments are only illustrative of the invention that can be realized in different forms. Further, each of the examples given in relation to the different embodiments of the invention is illustrative, and not exhaustive. In addition, the figures are not necessarily in scale, some features may be exaggerated to show details of particular components. Accordingly, it should not be construed that the structural and functional details disclosed herein are limiting, but merely a representative basis for teaching a person skilled in the art to employ the present invention in various manners.

One embodiment of the present invention provides an artificial intervertebral disc ("AID") assembly comprised of first and second anchor plates (each of which has a contact side with the vertebrae) and at least one composite structure that is fixed to the first and second anchor plates. The composite structure can be composed of a column that includes woven and / or non-woven fiber (s). In one embodiment (the example of which is illustrative and not restrictive), the column may comprise polyester. In a more specific example (whose example is illustrative and not exhaustive), the column may comprise DACRON. The column may be at least partially hollow (for example, having one or more holes in it) and may be filled (totally or partially) with a compressible material, such as an elastomer. For example (whose example is illustrative and not exhaustive), the elastomer may include a silicone, a urethane, a thermoplastic elastomer, an alloy of elastomers, a polyurethane / polycarbonate alloy, and / or any combination thereof.

It should be noted that the filling of the column (for example, elastomer) can store energy and then return the energy to the physiological system (because the filling of the column can allow the displacement similar to the physiological one, the filling of the column can (like that the physiological system) dissipate some deformation energy).

In one example (whose example is illustrative and not exhaustive), the compressive properties of the artificial intervertebral disc can be tuned to closely match those found in a natural intervertebral disc using a generally parabolic function. In a specific example applicable to a cervical disc (when the deviation is plotted on the x-axis and the compressive load is plotted on the y-axis), the parabola can usually be described by the function y = A x2 + B x + C, where the coefficient A is in the range of 700 to 2000, the coefficient is in the range of 0 to 1500, and the coefficient C is in the range of 0 to 100 (the increasing stiffness is indicated by the increasing slope of the load-deviation curve to higher loads and deviations).

Referring to Figure 1 (which shows an embodiment of the present invention), it is noted that the Artificial Intervertebral Disc 100 includes the First Anchor Plate 102A and the Second Anchor Plate 102B (each of the Anchor Plates 102A, 102B). they can comprise, for example (whose example is illustrative and not exhaustive), any desired biologically acceptable metal). It should be noted that each of the Anchor Plates 102A, 102B may have an outer surface configured to be disposed adjacent a respective vertebral endplate (not shown). In addition, the Core 104 (for example, comprising an elastomer) is sandwiched between an inner surface of the Anchor Plate 102A and an inner surface of the Anchor Plate 102B (in one example (the example of which is illustrative and not exhaustive) ), the inner surfaces of the Anchoring Plates 102A, 102B may be convex and may be received in respective concavities in the Core 104). In addition, the Cable 106 (for example, comprising a polymer and / or a metallic material (for example, including a biologically acceptable metal)) is mounted at a first end to the Anchor Plate 102A and at a second end to the Anchor Plate 102B (where Cable 106 runs from the Plate of Anchoring 102a to the Anchor Plate 102B through a hole provided in the Core 104).

In an example (the example of which is illustrative and not exhaustive), the Cable 106 can be mounted to the Anchor Plate 102A in a depression formed in an inner surface of the Anchor Plate 102A and the Cable 106 can be mounted to the Anchor Plate 102A. Anchoring the Anchor Plate 102B in a depression formed in an inner surface of the Anchor Plate 102B. In another example (the example of which is illustrative and not exhaustive), the Cable 106 can be mounted to the Anchor Plate 102A through a hole formed all the way through the Anchor Plate 102A (i.e. extends from an inner surface of the Anchor Plate 102A to an outer surface of the Anchor Plate 102A) and the Cable 106 can be mounted to the Anchor Plate 102B through a hole formed all the way through the Plate Anchor 102B (ie, a hole extending from an inner surface of the Anchor Plate 102A to an outer surface of the Anchor Plate 102B). In another example (the example of which is illustrative and not exhaustive), the Cable 106 can be mounted to the Anchoring Plates 102A, 102B using any suitable mounting mechanism (eg, adhesive, weld, screw (s), bolt (s)). , friction accessory (s), etc).

Referring now to Figures 2A-2D, examples of assembly steps (examples are illustrative and non-exhaustive) associated with the artificial intervertebral disc of Figure 1 are shown.

Referring now to Figure 3, a cut-away view of the mounted artificial intervertebral disc of Figure 1 is shown.

Referring now to Figure 4, it is noted that the Artificial Intervertebral Disc 400 includes the First Anchor Plate 402A and the Second Anchor Plate 402B (each of the Anchor Plates 402A, 402B may comprise, for example (whose example is illustrative and not exhaustive), any desired biologically acceptable metal). It should be noted that each of the Anchor Plates 402A, 402B may have an outer surface configured to be disposed adjacent a respective vertebral endplate (not shown). In addition, the Core 404 (eg, comprising an elastomer) is sandwiched between an inner surface of the Anchor Plate 402A and an inner surface of the Anchor Plate 402B (in one example (the example of which is illustrative and not exhaustive) ), the inner surfaces of the Anchoring Plates 402A, 402B may be convex and may be received in respective concavities in the Core 404). In addition, the First Link of the 406A Chain, and the Second Link of the Chain 406B (for example, each of which may comprise a polymer and / or a metallic material (eg, including a biologically acceptable metal)) are mounted to the Anchor Plates 402A, 402B. That is, the First Link of the Chain 406A is mounted at its open end to the Anchor Plate 402B and the Second Link of the Chain 406B is mounted at its open end to the Anchor Plate 402A (when mounted to the anchor plates respectively the links of the chain interlock one another, furthermore, the interlock chain links run from the Anchor Plate 402A to the Anchor Plate 402B through a hole provided in the Core 404.

In an example (the example of which is illustrative and not exhaustive), the First Link of the Chain 406A can be mounted to the Anchor Plate 402B in depressions formed on an inner surface of the Anchor Plate 402B and the Second Link of the Chain 406B it can be mounted to Anchor Plate 402A in depressions formed in an inner surface of Anchor Plate 402A. In another example (the example of which is illustrative and not exhaustive), the First Link of the Chain 406A can be mounted to the Anchor Plate 402B through holes formed all the way through the Anchor Plate 402B (i.e. the holes that extend from an inner surface of the Anchor Plate 402B to an outer surface of the Anchor Plate 402B) and the Second Link of the Chain 406B can be mounted to the Anchor Plate 402A through holes formed all the way through the Anchor Plate 402A (ie, holes extending from an inner surface of the Anchor Plate 402A to an outer surface of the Anchor Plate 402A). In another example (the example of which is illustrative and not exhaustive), the First Link of the Chain 406A and the Second Link of the Chain 406B can be mounted to the Anchoring Plates 402A, 402B using any mounting mechanism (for example, adhesive, welding, screw (s), bolt (s), friction fitting (s), etc).

Referring to Figures 5A-5D, examples of assembly steps (examples are illustrative and non-exhaustive) associated with the artificial intervertebral disc of Figure 4 are shown.

Referring to Figure 6, a cut-away view of the mounted artificial intervertebral disc of the Figure is shown. Referring to Figures 7A-7F, examples of initial attachment mechanisms (examples of which are illustrative and non-exhaustive) associated with artificial intervertebral discs according to the present invention are shown.

More particularly, Figure 7A shows the Anchoring Member 700 having three pyramidal protrusions for holding a vertebral end plate (not shown), Figure 7B shows the Anchoring Member 702 having three conical protrusions for holding a vertebral end plate (not shown); Figure 7C shows the Anchor Member 704 having three blade or keel type protrusions for holding a vertebral end plate (not shown); Figure 7D shows Anchor Member 706 having five pyramidal protrusions for holding a vertebral endplate (not shown); Figure 7E shows the Anchor Member 708 having five conical protrusions for securing an end plate (not shown); and Figure 7F shows the Anchor Member 710 having five bucket-type protrusions or keel for securing a vertebral end plate (not shown). Naturally, any desired number and / or placement of said initial locking mechanisms can be used. Referring now to Figure 8 (which shows another embodiment of the present invention), it is noted that the Artificial Intervertebral Disc 800 includes the First Anchor Plate 802A and the Second Anchor Plate 802B (each Anchor Plate 802A, 802B may comprise , for example (whose example is illustrative and not exhaustive), any metal biologically acceptable desired). It should be noted that each of the Anchoring Plates 802A, 802B may have an outer surface configured to be disposed adjacent a respective vertebral endplate (not shown). In addition, the Column Filler 804 (eg, comprising an elastomer) is sandwiched between an inner surface of the Anchor Plate 802A and an interior surface to the Anchor Plate 802B (in one example (the example of which is illustrative) and not restrictive), the interior surfaces of the Anchoring Plates 802A, 802B may be concave to receive the Column Refill 804). In addition, Column 806 (for example, comprising DACRON) is held between the First Inner Ring 808A and the First Outer Ring 808B as well as between the Second Inner Ring 810A and the Second Outer Ring 810B for mounting to each of the Plates of Anchor 802B, 802B.

In an example (the example of which is illustrative and not exhaustive), Column 806 is held between the First Inner Ring 808A and the First Outer Ring 808B as well as between the Second Inner Ring 810A and the Second Outer Ring 810B by crimping or swiveling.

In another example (whose example is illustrative and not exhaustive), Column 806 is held between the respective inner rings and outer for mounting to each of the Anchoring Plates 802A, 802B (such as, for example, on the outer vertical surfaces of the Anchoring Plates 802A, 802B) by welding (eg, laser welding) the First Inner Ring 808A to Anchor Plate 802A and Second Inner Ring 810A to Anchor Plate 802B.

Referring now to Figures 9-12 (showing another embodiment of the present invention), it is noted that the Artificial Intervertebral Disc 900 includes the First Anchor Plate 902A and the Second Anchor Plate 902B (each of the Anchoring Plates). 902A, 902B may comprise, for example (which example is illustrative and not exhaustive), any desired biologically acceptable metal). It should be noted that each Anchor Plate 902A, 902B may have an outer surface configured to be disposed adjacent a respective vertebral end plate (not shown). In addition, Column Filler 904 (eg, comprising an elastomer) is disposed between an inner surface of Anchoring Plate 902A and an inner surface of Anchoring Plate 902B (in one example (whose example is illustrative and not restrictive), the inner surfaces of the Anchoring Plates 902A, 902B may be concave to receive the Fill Column 904) therein.

In addition, Column 906 (for example, comprising DACRON) is it holds between the Inner Ring 908A and the First Outer Ring 908B as well as between the Second Inner Ring 910A and the Second Outer Ring 910B for mounting to each of the Anchor Plates 902A, 902B.

Still referring to Figures 9-12, it is noted that each of the First Anchor Plate 902A and the Second Anchor Plate 902B may include the Barbs 912 (e.g., to assist in the initial fixation), the Cavities 914 ( for example, to support a porous coating), and / or the Mounting Characteristics (for example, for interconnection with one or more supporting / implanting instruments).

Referring now to Figures 13A-13F, further details of the intervertebral disc of Figure 9 are shown. In this regard, Figure 13A is a top view, Figure 13B is a bottom view, Figure 13C is a side view, Figure 13D is a side view, Figure 13E is a side cut view (along section BB of Figure 13A) and Figure 13F is a detailed view of part "C" of Figure 13E.

Referring now to Figures 14A-14D, additional details of a column and crimp rings are shown. artificial intervertebral disc of Figure 9. In this regard, Figure 14A is an exploded view, Figure 14B is a top view, Figure 14C is a side sectional view (along section AA of Figure 14B) and Figure 14D is a detailed view of a part of Figure 14C.

Referring now to Figures 15A-15C, additional details of an inner crimping ring of the artificial intervertebral disc of Figure 9 are shown. In this regard, Figure 15A is a perspective view, Figure 15B is a top view and the Figure 15C is a side cut view (along section AA of Figure 15B).

Referring now to Figures 16A-16C, additional details of an outer crimping ring of the artificial intervertebral disc of Figure 9 are shown. In this regard, Figure 16A is a perspective view, Figure 16B is a top view and the Figure 16C is a side cut view (along section AA of Figure 16B).

Referring now to Figures 17A and 17B, additional details of a column of the artificial intervertebral disc of Figure 9 are shown. In this regard, Figure 17A is a top view and Figure 17B is a side view.

Referring now to Figures 18A and 18B, additional details of a filling of the artificial intervertebral disc column of Figure 9 are shown. In this regard, Figure 17A is a perspective view and Figure 17B is a side view.

Referring now to FIGS. 19A-19I, additional details of a top anchor plate (ie, toward the head) of the artificial intervertebral disc of FIG. 9 are shown.

Referring now to Figures 20A-20I, additional details of a lower anchor plate (ie, caudal) of the artificial intervertebral disc of Figure 9 are shown.

Referring now to Figure 21, parts of an artificial intervertebral disc according to another embodiment of the present invention are shown. As seen in this Figure 21, Column 2101 (for example, comprising DACRON) is threaded between Upper Ring 2103A and Lower Ring 2103B. Although not shown in this Figure 21 for clarity, each of the Top Ring 2103A and the Bottom Ring 2103B is assembled (eg, by welding) to a Top Anchor Plate and Bottom Anchor Plate (each of the Upper Anchor Plates and Lower Anchor Plate may comprise, for example (whose example is illustrative and not exhaustive), any biologically acceptable metal). In addition, each Top Anchor Plate and Bottom Anchor Plate may have an outer surface configured to be disposed adjacent a respective vertebral end plate (not shown). Furthermore, although not shown in Figure 21 for clarity, the Column Filling (eg, comprising an elastomer) is disposed within Column 2101 (in one example (the example of which is illustrative and not exhaustive), the interior surfaces of the Top and Bottom Anchoring Plates may be concave to receive the Column Fill).

Referring now to Figures 22A-22N, diagrams associated with the present invention are shown.

More particularly, it is pointed out that an example of a surgical technique associated with the present invention (the example of which is illustrative and not exhaustive), may comprise the following steps: • Step 1, Access: Normal surgical approach to obtain sufficient visualization of the affected disk space (see Figure 22A). • Step 2, Discectomy: Evacuate the affected disc space using normal surgical procedures (see Figure 22B). • Step 3.1, Distraction: The interbody distraction is performed using the Pala Style Distractor. Insert the end of the distractor blade into the interbody space, placing them as far back as possible (this technique helps achieve parallel separation). Turn the equalizer until the correct distraction has been reached (see Figure 22C). • Step 3.2, Distraction: Once the parallel distraction of the interbody space has been achieved (the Pala Style Dsitractor can stay in place) The Pin Style Distractor is used to allow access to the interbody space. Select pin styles. For Pin 1 Style, insert pins in the anterior aspect of the adjacent vertebral bodies. Once the pins are positioned correctly, the distractor cannula arms can be positioned in place. The ratchet device can then act until the correct distraction has been achieved. Remove the Pala Style Distractor. For Pin 2 Style, place the cannula distractor arms in place on adjacent vertebral bodies. Drag the hexagonal head pins through the cannula arms into the vertebral bodies. The ratchet device can then be actuated until the correct distraction has been achieved. Remove the Shovel Style Distractor (see Figures 22D and 22E). • Step 4.1, Preparation of End Plate: End plate templates are provided to control that the end plate matches the implant. Check to make sure that the template marked "Up" is used for the lower end plate of the vertebral body towards the head and that the template marked "Down" is used for the upper end plate of the vertebral body Flow (see Figures 22F and 22G). • Step 4.2, Preparation of the End Plate. Shaping the vertebral endplates can be achieved, if necessary, by reaming. The first Reamer (see Figure 22H) is inserted into the disc space creating the M / L gap for correct implant fit. Followed by the second reamer (Figure 221), which removes the material of the posterior aspect of the joint space. • Step 5, Evaluation of Implant Height. Sizing of the Test: The selection of the correct implant is essential. Place the tests starting with the smallest (for example, 6 mm) in the disc space to determine the correct size of the implant (height and trace) (see Figure 22J). • Step 6, Implant Insertion: Load the prosthetic device onto the support by aligning the pins on the support (see Figure 22K) with the holes on the implant (see Figure 22L). Turn the knob over the bracket to operate the jaws until a snug fit has been achieved. Place the device in the vertebral space using fluoroscopy. Once you are satisfied with the placement of the implant, turn the knob over the holder to release the jaws and pull the instrument out of the implant (see Figures 22M and 22N).

Referring now to Figures 23A and 23B, it is nothat the Artificial Intervertebral Disc 2300 includes the First Anchor Plate 2302A and the Second Anchor Plate 2302B (each Plate Anchor 2302A, 2302B may comprise, for example (which example is illustrative and not exhaustive), any desired biologically acceptable metal). It should be nothat each Anchorage Plate 2302a, 2302B may have an outer surface configured to be disposed adjacent a respective vertebral endplate (not shown). In addition, Core 2304 (e.g., comprising UHMPE) is sandwiched between an interior surface of Anchorage Plate 2302A and an interior surface of Anchorage Plate 2302B (in one example (the example of which is illustrative and not exhaustive) , the inner surfaces of the Anchoring Plates 2302A, 2302B may be concave to receive the Core 2304 therein). In addition, the Inner Column 2305 (for example, comprising an elastomer) is also sandwiched between the inner surface of the Anchor Plate 2302A and the inner surface of the Anchor Plate 2302B. Moreover, the External Column 2306 (for example, comprising a material of PE (polyethylene), or a polyester material (for example, DACRON) is held between the First Inner Ring 2308A and the First Outer Ring 2308B as well as between the Second Internal Ring 2310A and Second External Ring 2310B for mounting to each of Anchor Plates 2302A, 2302B.

In one example (the example of which is illustrative and not exhaustive), the External Column 2306 is held between the First Inner Ring 2308A and the First Outer Ring 2308B as well as between the Second Inner Ring 2310A and the Second Outer Ring 2310B by crimping or swiveling .

In another example (the example of which is illustrative and not exhaustive), the External Column 2306 is held between the respective inner and outer rings for mounting to each of the Anchoring Plates 2302A, 2302B (such as the outer vertical surfaces of the Plates). Anchor 2302A, 2302B) by laser welding the First Inner Ring 2308A to the Anchor Plate 2302A and the Second Inner Ring 2310A to the Anchor Plate 2302B.

Referring now to Figures 24-27 (which show an embodiment of the present invention), it is nothat the Artificial Intervertebral Disc 2400 includes the First Anchor Plate 2402A and the Second Anchor Plate 2402B (each Anchor Plate 2402A, 2402B it can comprise, for example (whose example is illustrative and not exhaustive), any desired biologically acceptable metal). It should be nothat each Anchorage Plate 2402A, 2402B may have an outer surface configured to be disposed adjacent a respective vertebral endplate (not shown). In addition, the Column Fill 2404 (e.g., comprising an elastomer) is disposed between an inner surface of the Anchor Plate 2402A and an inner surface of the Anchor Plate 2402B (in one example (whose example is illustrative and not restrictive), the interior surfaces of the Anchoring Plates 2402A, 2402B may be concave to receive in them the Fill of Column 2404).

In addition, Column 2406 (for example, comprising a polyester) (eg, DACRON) is held between the First Inner Ring 2408A and the First Outer Ring 2408B as well as between the Second Inner Ring 2410A and the Second Outer Ring 2410B for mounting to each of the Anchor Plates 2402A, 2402B.

Still referring to Figures 24-27, it is noted that each of the First Anchor Plate 2402A and the Second Anchor Plate 2402B may include the Barbs 2412 (e.g., to aid in initial attachment), the Cavities 2414 ( for example, to support a porous coating), and / or Anchoring Characteristics (e.g., for interconnection with one or more supporting / implanting instruments).

Referring now to Figures 28-33, additional views of components of an artificial intervertebral disc according to another embodiment of the present invention are shown. It should be noted that the components shown in these Figures 28-33 they are similar to those of Figures 24-27, with the exception that Column 2406 has Radial Link 2806A therein (for example, a linker that extends around a perimeter of Column 2806). In this regard, the Radial Linker 2806A can provide flexibility that can (a) help assemble the AID; (b) help to implement the AID; and / or (c) help provide desired deviation behavior. It should also be noted that Figure 32 shows Column 2806 in an untrimmed state (ie, it is observed in Figure 32 that it has a longer aspect ratio than in the other figures).

Referring now to Figures 34-43 (which shows an embodiment of the present invention), it is noted that the Artificial Intervertebral Disc 3400 (shown in an exploded view in Figure 34 and in a sectional view in Figure 35) includes the First Anchor Plate 3402A and the Second Anchor Plate 3402B (each Anchor Plate 3402A, 3402B may comprise, for example (which example is illustrative and not exhaustive), any desired biologically acceptable metal). It should be noted that each Anchorage Plate 3402A, 3402B may have an outer surface configured to be disposed adjacent a respective vertebral endplate (not shown). In addition, the Column Filler 3404 (for example, comprising an elastomer) is disposed between an interior surface of the Anchor Plate 3402A and an inner surface of the Anchor Plate 3402B (in one example (the example of which is illustrative and not exhaustive), the inner surfaces of the Anchoring Plates 3402A, 3402B may be concave to receive the Column Filler 3404 ). In addition, Column 3406 (e.g., comprising a HTPET fabric) is held between the First Inner Ring 3408A and the First Outer Ring 3408B as well as between the Second Inner Ring 3410A and the Second Outer Ring 3410B for mounting to each of Anchoring Plates 3402A, 3402B.

Still referring to Figures 34-43, it is noted that each of the First Anchor Plate 3402A and the Second Anchor Plate 3402B may include the Prongs 3412 (e.g., to assist initial anchoring), cavities to hold a Porous Coating 3414 and / or Mounting Characteristics (e.g., for interconnection with one or more supporting / implanting instruments).

As seen in Figures 34-43, Column 3406 has the Radial Link 3406 (for example, a linker that extends around a perimeter of Column 3406). In this regard, the Radial Linker 3406A can provide flexibility that can: (a) help assemble the AID; (b) help to implement the AID; and / or (c) help provide desired deviation behavior. In another embodiment the AID assembly can be constructed of first and second plates, each of which has a contact side with the vertebrae and a plurality of composite structures that are fixed to the first and second anchor plates. In an example (whose example is illustrative and not exhaustive) 2-8 composite structures can be fixed to the anchor plates.

In another embodiment the AID assembly can be provided with one or more anchoring plates having one or more notches and / or one or more tabs to facilitate the anchoring of the AID assembly to the vertebral bodies. In one example (the example of which is illustrative and not restrictive) the tabs may be provided with screw holes in which screws may be inserted to anchor the assembly to the vertebral bodies. In another example (the example of which is illustrative and not exhaustive) the screw holes and / or tabs can be placed at an angle in relation to the bodies of the vertebrae (for example, to pull all or part of the diagonal AID assembly against the vertebrae).

In another embodiment the anchor plates can be mounted such that the anchor plates are not parallel (eg, to provide a profile substantially corresponding to the lordotic profile of the vertebral bodies / intervertebral space). In an example (whose example is illustrative and not exhaustive, the non-parallel angle can be from 5 ° to 15 °.

In another embodiment an AID assembly may be composed of several assemblies (e.g. equalizing the left and right assemblies), each assembly having first and second anchor plates and at least one composite structure that is fixed to the anchor plates. In one example (whose example is illustrative and not exhaustive) the left and right mounts can be dimensioned to reside adjacent to each other when they are positioned in the space between the vertebral bodies.

In another embodiment (for example, in relation to a modular design) the column (s) of the composite structure (s) can be terminated to the end pieces, which are then fixed to the anchor plates with one or more than one variety of media, thus allowing interchangeable heights and hardnesses to provide a personal device for the specific needs of a patient. Such personalization can be provided, for example (whose example is illustrative and not restrictive), using screw (s), threaded mechanism (s), and / or different sized insert (s) and / or ring (s) It should be noted that making a part of the column of the composite structure relatively hard (and / or connecting the column of the composite structure to a relatively hard tab or other device) can help assemble the column of the composite structure to the plates. anchorage.

It should also be noted that it is contemplated that each AID assembly of the present invention may be inserted using any desired surgical approach. For example (whose example is illustrative and not exhaustive), a later approach can be used. In another example (whose example is illustrative and not exhaustive), a posterior, lateral approach can be used. In another example (whose example is illustrative and not exhaustive), an earlier approach can be used.

In another example, the AID can be presented in a variety of "widths". For example (whose example is illustrative and not exhaustive), an assembly of the AID may have a "narrow" width, another assembly of the AID may have a "regular" width and a third assembly of the AID may have a "wide" width.

In another embodiment, the AID may be presented in a variety of lengths. For example (whose example is illustrative and not exhaustive), an AID assembly may have a "short" length, another AID assembly may have a "regular" length, and a third AID assembly may have a "high" length.

It should be noted that said various "widths" and / or various "lengths" can provide the potential for the maximum amount of surface contact between the device and the vertebral end plate, thereby decreasing the contact stresses and reducing the potential of the device. Subsidence (gradual "collapse" of the device into the joined vertebral bodies).

Furthermore, it is pointed out that during the surgical preparation of the vertebral end plate, a surgeon can scrape / flute with the intention of ensuring the final fixation between the vertebra and the implant. If the scraped / scored surface is larger than the implanted device, there is a greater possibility that the bone grows around the perimeter of the device, eventually producing the formation of bone bridges, fusing the spinal segment. A device with a surface that better matches the prepared end plate in terms of area coverage can help discourage this behavior.

In another embodiment, the column may be a string or essentially solid piece of material. In another embodiment, the column can be an essentially solid combination of materials.

In another embodiment, a column may have a greater thickness of the wall on one side or end than on the other side or end. For example (whose example is illustrative and not restrictive), the walls on the front side can be made thicker than the walls on the back side.

In another embodiment the assembly of the AID can be customized to provide any articulation, kinematic behavior, dynamic behavior and / or static properties for any given application (e.g., implant site) and / or patient (e.g., sex, age, height, weight, activity level). For example (whose example is illustrative and not exhaustive): 1. The articulation, the kinematic behavior, the dynamic behavior and / or the static properties presented by the column (s) can be modified by varying the density and / or the composition of the material.

The articulation, the kinematic behavior, the dynamic behavior and / or the static properties presented by the filling of the column (s) can be modified by varying the density and / or the composition of the material. The articulation, the kinematic behavior, the dynamic behavior and / or the static properties presented by the assembly of the AID can be modified by varying (for individual components (for example, the column, the filling of the column, the intermediate elements, the boxes of anchor)): the height of the column; the width of the column (for example, the diameter); the cross section of the column (the shape and / or the area); the thickness of the wall of the column; the hardness module of the column; the height of the filling; the width of the filling (for example, the diameter); the cross section of the filling (the shape and / or the area); the hardness modulus of the filling; the material of the anchor plates; the shape of the anchor plates; 1) the hardness module of the anchor plates; m) the material of the intermediate elements; n) the shape (for example, the curvature) of an interconnection between the filling and an anchor plate or an intermediate element. The articulation, the kinematic behavior, the dynamic behavior and / or the static properties presented by one or more composite structures in an AID assembly of several composite structures can be modified by varying one or more parameters considered in paragraph 3, above, to make to one or more of the composite structures more rigid than one or more of the other composite structures to contribute to the hardness locally and to contribute to the imitation of the inhomogeneous hardness topography in vivo (e.g., in vivo topography in relationship with the area of relatively higher hardness in the posterior region of the vertebral body against the relatively lower hardness in 1 anterior region of the vertebral body). In the context of an AID assembly of several composite structures, one or more of the composite structures can be properly positioned between the anchor plates as follows: a) one or more composite structures can be placed at an increased distance from the center of the implant (for example, helping to increase the torsional hardness of the implant); b) the lateral positioning of one or more composite structures can be used (for example, to help control the hardness of lateral bending of the implant); and / or c) the positioning of one or more composite structures can be used (for example, helping to control the flexure / extension hardness of the implant); In the context of the AID assembly of several composite structures, any desired amount of composite structures can be used. In the context of a structure composed of several orifices, the articulation, the kinematic behavior, the dynamic behavior and / or the static properties presented can be controlled in a similar way as discussed in paragraphs 4-6 above, with respect to the AID of several composite structures (for example, the spacing between the holes can be varied, the size / area of the cross section / the shape of the cross section of the holes can be varied, it can be varied the position of the different holes, you can vary the number of holes, etc).

In another example (whose example is illustrative and not exhaustive), the composite structure can be configured in such a way that the composite structure has associated with it, in at least one axis, a load depending on the deviation behavior substantially similar to that of a substantially healthy human intervertebral disc.

In another example (whose example is illustrative and not exhaustive), the load based on the deviation behavior can be selected from the group that includes (in non-restrictive form): (a) the dynamic behavior, whose dynamic behavior is a function of the application of the time index of the load; (b) kinematic behavior; and (c) the static behavior.

In another example (the example of which is illustrative and not exhaustive), the load as a function of the deviation behavior may include a non-linear relationship between a force quantity required to compress the composite structure and a deviation of the composite structure.

In another example (whose example is illustrative and not exhaustive), the hardness of the composite structure may increase when the composite structure is compressed.

In another example (the example of which is illustrative and not restrictive), the elastomer may be selected from the group including (but not limited to): (a) a silicone; (b) a urethane; and (c) a thermoplastic elastomer.

In another example (whose example is illustrative and not exhaustive), the column can be impregnated with a material that contributes to preventing at least one of (in non-restrictive form): (a) the biological inward growth in the column; and (b) the biological assembly to the column.

In another example (whose example is illustrative and not exhaustive), the column can be covered with a material that contributes to preventing at least one of (in non-restrictive form): (a) the biological inward growth in the column; and (b) the biological assembly to the column.

In another example (whose example is illustrative and not exhaustive), the artificial intervertebral disc can be configured to be implanted by at least one method selected from the group that includes (in non-restrictive form): (a) the subsequent implementation; and (b) internal implantation.

In another embodiment the column and / or the filling of the column may contain a compression element (eg, a spring (eg, constructed of a biocompatible material, such as titanium)).

It should be noted that the materials used in the construction of the AID assembly can be resistant, durable and biocompatible. For example (whose example is illustrative and not exhaustive), the anchor plates can be constructed of titanium 6AL4V ELI (extra-low interstitial), a titanium alloy containing 6% aluminum and 4% vanadium. All elastomeric or non-elastomeric materials used in assembly can be biocompatible. One skilled in the art would appreciate the other materials that can be used to build implants in accordance with the present invention.

As mentioned above, the column (s) can be coated (for example, to help prohibit the growth of tissue and / or bone on the column (s).) In an example (the example of which is illustrative and not exhaustive), the coating can be silicon, urethane, any desired biocompatible alastomer layer and / or any combination thereof.

In another example the column (s) can be impregnated with the filler (e.g., the elastomer).

In another embodiment the device can withstand shear translation and spine flexion and can produce a cut in one or more adjacent joints (eg, an upper adjacent joint).In another embodiment the flexion / extension may produce the shear translation and the rotation of a superior vertebral body.

In another embodiment, one or more surfaces of the anchoring member can be shaped to substantially equalize the adjacent vertebral endplates to allow minimal "carpentry" (or bone removal / configuration) during surgery to achieve a good area of contact (for example, in the cervical spine, the surface towards the head of the implant can be convex in the AP direction (anterior-posterior) to equalize the AP concavity in the end plate on the caudal end (towards the feet) of the body vertical towards the head of space of the disc and the caudal surface of the implant can be convex laterally to equalize the concavity in the vertebral end plate on the end towards the head of the vertebral body caudal to the disc space).

In another embodiment one or more pieces of the AID can be sterilized separately, or a final unit of the AID can be sterilized as a unit. In a specific example (whose example is illustrative and not exhaustive), a final unit of the AID can be placed in a bag and then sterilized (through the bag).

Various structural features of the invention have been described, and methods for installing an AID assembly, and for stabilizing the AID assembly. In this regard, it is believed that when the assembly of the AID of the present invention is inserted between the vertebral bodies and subjected to personalized loads, the assembly of the AID may be dislodged in a manner similar to the way in which a healthy intervertebral disc would behave. It should be noted that the implants of the present invention can provide one or more of the following attributes when inserted into the body (eg, between the vertebrae): • Essentially the same joint can be made as a healthy intervertebral disc (e.g. , a lumbar disc intervertebral, a cervical intervertebral disc, an intervertebral thoracic disc); • Essentially the same kinematic behavior can be performed as a healthy intervertebral disc (for example, an intervertebral lumbar disc, an intervertebral cervical disc, an intervertebral thoracic disc); • Essentially you can perform the same behavior as a healthy intervertebral disc (for example, an intervertebral lumbar disc, an intervertebral cervical disc, an intervertebral thoracic disc); • The static properties of the implant and a healthy intervertebral disc (for example, an intervertebral lumbar disc, an intervertebral cervical disc, an intervertebral thoracic disc) can be substantially identical; • The implant can be biocompatible; • The device can be implanted through subsequent and / or previous approaches; • The device can be installed in a relatively short period of time (for example, around 90 minutes); • The device may present positive results in fatigue tests (for example, the device may be usable after lOxlO6 cycles); • The device can survive the static charge, the shear load and the test to induce ejection; • The device can be fixed relatively quickly to vertebral bodies; • The device can minimize the effort of contact with vertebral bodies in the interconnection of the device; Y • The device can be placed in an autoclave.

In other embodiments the assembly of the AID may include one or more of the following features: • The device may have lordosis (lordotic angle) incorporated in (in one example the lordotic angle may place the composite structure substantially coincident with the axis of the spinal unit) Functional ("FSU") • The anchor plate (s) may have a surface treatment (s) to encourage bone integration (internal osseous growth) to establish ultimate fixation to the vertebral endplates.These surface treatments may include ( in non-exhaustive form): electrochemical etching, titanium sprayed with plasma, sintered metal beads or scales, bioactive / osseoinductive / osseoconductive ceramic coating (for example, hydroxyapatite (HA)) • The device may employ no screws, only one screw or several screws for fixation • The device may include features to establish immediate fixation to the vertebral end plates. Said characteristics may include (in non-restrictive form): screw (s); keel (s); indentation (s) (for example, serrations that look back or ridges at an angle to "bite" in place); rough protrusion (s); Finger protrusion (s) that can be deployed once the device is in place. • The device can dampen deformation energy through a compliant composite structure (s) • The column can be reinforced. Said reinforcement may include (in non-restrictive form): external reinforcement; interior reinforcement; edge (s) / circumferential band (s); edge / spiral band; edge (s) / band (s) of nitinol, metal; edge (s) / band (s) disconnected from the column; edge (s) / band (s) connected to the column; fusion welding; as part of the extrusion process • A connection between a column and an anchor plate may include a friction component, for example, due to the compressive force that captures the column / flange or plate (friction can be improved with a geometry from Wrinkled surface (for example, on the surface of the mismatch anchor plate)) • A capture component can be welded to an anchor plate • Holes in an anchor plate can improve the sterilization capacity (for example, with EtO gas) • The column can be designed in such a way that when the AID assembly is in a neutral condition (for example, not bent or twisted), the column (for example, DACRON) is somewhere in the middle of its elongation ratio (not fully compressed or elongated). • The column surrounding the column filling can restrict the radial bulk of the column filling during compression, making the charge-deviation response of the composite structure non-linear, like a healthy disk.

• A biconcave core can run on convex domed surfaces so that the core follows the movement of the "front" anchor plate, promoting movement that mimics the cutting displacement on an intact disc while bending • The AID assembly can have several height options to properly match the height of the disc that is being replaced allowing proper distraction to the segment during and after surgery to decompress the anatomy, for example the foraminal nerves (facing the pathology) • The assembly of the AID can have various sizes (for example, in the anterior-posterior dimension (AP), allowing the correct placement of the composite structure coinciding with the axis of the functional spinal unit In another embodiment the column of the composite structure can be fixed to the anchoring plates to form a structural unit (i.e., the column forms a "bridge link" between the anchoring plates).

In another embodiment the embodiment of the AID assembly does not pre-stress. Since the AID assembly of this embodiment is not pre-stressed, the filling of the column (e.g., the elastomer) does not exhibit any significant amount of "slippage". Furthermore, the mounting of the AID of this embodiment is sometimes essentially not under any effort (for example, when the patient using the AID assembly is lying down). It should be noted that this is a behavior similar to a natural disc.

It should be noted that when a column is used without a column filling (eg, in the form of an essentially homogeneous structure), that column can be integrated into the AID assembly (e.g., in terms of mounting to the plates). anchoring, personalization to the patient) in essentially the same way as a composite structure discussed in the present.

In another example (whose example is illustrative and not exhaustive), the surgeon can (during the surgical procedure) make the required incisions or access the site where the diseased or damaged disc should be removed. After removal of the diseased or damaged disc or the diseased or damaged part (s) of the disc, the surgeon may cut grooves in the end plates of the vertebral bodies that were adjacent to the removed disc. The grooves that are cut can be sized and configured to correspond to an interconnection on an elevated part of the anchoring plate (s). It should be noted that the surgical procedure may also include removing a healthy part (s) of the patient's disc (s) in the magnitude required for the implant of the AID assembly.AsE In one embodiment the compressibility of the implant of the present invention can prove to be useful during the procedure of implant. For example (whose example is illustrative and not restrictive), when the implant is inserting between the vertebrae, the implant can be compressed to proportions smaller than its uncompressed height. The surgeon can then, before releasing the implant from its compressed height, adjust its position to ensure that the interconnection elevated on the anchoring plates and the grooves cut in the vertebral bodies are aligned with one another. After the surgeon that this is the c the implant can be rele from its compressed state (for example, in such a way that the high interconnection enters the grooves).

Alternatively, the grooves can be cut into the vertebral body with an equal notch, so that the anchor plates (eg, side, front or back) can be inserted in an assembly configuration. This embodiment can allow positive initial traction mounting between the anchor plates and the end plates, without having to wait for internal bone growth.

While numerous embodiments of the present invention have been described, it is understood that these embodiments are illustrative only, and not restrictive, and that many modifications may be made apparent to those skilled in the art. For example, One or more components can be constructed with titanium, cobalt chromium, surgical steel and / or any combination thereof. In addition, customization can be done using several interchangeable components (eg, interchangeable composite structures). In addition, personalization can be done using a family of normal parts. In addition, the customization of the AID assembly can be carried out at the place of manufacture (for example, by a technician in the factory) and / or at the implant site (for example, by a surgeon in the hospital). Moreover, the vertex contact side of the anchoring members (i.e., the side of the anchoring members facing the "upper" and "lower" faces of the vertebra) may include fasteners, promotion elements. of the internal growth of the tissue and / or of promoting internal bone growth, such as, for example (example of which is illustrative and not exhaustive), grooves, teeth, protuberances, depressions or any combination of them. In addition, the mounting tabs associated with the anchoring members (the mounting tabs of which can come into contact with the vertebrae on the generally "outer" external faces thereof) can interconnect with the vertebrae along a plane interconnection, a Curved interconnection, or a combination of them. Moreover, the mounting tabs may include fasteners, for promoting internal tissue growth and / or bone growth promotion such as those described above. Moreover, the filling of the column (e.g., an elastomer) within the column may have a sufficient hardness to form a distant "core" within the column (such that the core essentially fills the entire space within the column). column or that the core fills less than the entire space within the column (for example, having one or more holes above the nucleus, below the nucleus and / or around the nucleus between the nucleus and the column)). Moreover, the filling of the column (eg, the elastomer) within the column may have an insufficient hardness to form a distant "core" within the column but may instead fill the column in a more or less "fluid" form "(so that the filling of the column essentially fills the entire space within the column or that the filling of the column fills less than the entire space within the column (for example, having one or more holes above the filling of the column, below the filling of the column and / or around the filling of the column between the core and the column.) Moreover, the filling of the column (for example, the elastomer) can be extruded / injected into the column Furthermore, the filling of the column (for example, the elastomer) may protrude out of the top, bottom and / or side (s) of the column. outstanding (for example, the elastomer) it can be used to assist in the assembly of the composite structure to the anchor plate (for example, the protruding elastomer can be mounted directly or indirectly (via an intermediate element) to an anchor plate using any desired mounting mechanism). Moreover, the column can comprise any desired fiber and / or fabric. Moreover, the assembly of the column (s) and / or the composite structure (s) to the anchor plate can be done using a press fit, a rotating stamp, welding (eg, spot or continuous), numerous pitches of interference, a forced interference fit, a threaded fit, a punch mechanism in a seam between parts and / or any other desired method (as well as, of course, any combination thereof). Moreover, the device can be shaped as desired, such as having a circular shape, an oval shape or a kidney shape, for example (this can be affected by providing a desired shape to any of the components (e.g. , the anchor plates and / or the column (s) and / or the composite structure (s))). Moreover, the composite structure (s) can essentially fill the space between the anchoring plates or there may be empty space between the composite structure (s). Moreover, the filling of the column, the material used to coat the column (s) and / or the impregnated material in the column (s) can be any compressible, elastic compressible material, extrudable and / or desired flow (or combination thereof). Moreover, the load / deflection curves associated with the present invention can derive from underlying data that has been applied to it by any type of curved fitting (eg, a polynomial curved fixture to the second or third force). Moreover, all dimensions, engineering notes, specifications, etc. identified in the figures are examples and not exhaustive. Moreover, any number of linkers can totally and / or partially enclose the perimeter of the column. Moreover, any step can be performed in any desired order (and certain steps can be omitted and / or steps can be added).

Claims (29)

1. An artificial intervertebral disc for the implant in a spine between a first vertebral body and a second vertebral body, wherein the first vertebral body has an end plate of the first vertebral body, the second vertebral body has an end plate of the second vertebral body and the end plate of the first vertebral body and the end plate of the second vertebral body opposite each other, comprising: A column comprising a polyester; A filling of the column comprising an elastomer; A first set of crimped rings comprising a first inner ring a first outer ring, wherein the first crimped ring is disposed adjacent a first end of the column and wherein at least a part of the column is held between the first ring interior and the first outer ring; A second set of crimped rings comprising a second inner ring and a second outer ring, wherein the second set of crimped rings is disposed adjacent a second end of the column and wherein at least a portion of the column is held between the second inner ring and the second outer ring; A first anchoring member configured for positioning against the end plate of the first vertebral body; and A second anchoring member configured for positioning against the end plate of the second vertebral body; Wherein at least one of the first inner ring and the first outer ring of the first set of crimped rings provides a mechanism for mounting the column to the first anchoring member; and wherein at least one of the second inner ring and the second outer ring of the second set of crimped rings provides a mechanism for mounting the column to the second anchoring member.

2. The artificial intervertebral disc according to claim 1, wherein the polyester is DACRON.

3. The artificial intervertebral disc according to claim 1, wherein at least one of the first inner ring and the first outer ring of the first set of crimped rings provides a mechanism for mounting the first end of the column to the first anchoring member and in wherein at least one of the second inner ring and the second outer ring of the second set of crimped rings provide a mechanism for mounting the second end of the column to the second anchoring member.

4. The artificial intervertebral disc according to claim 3, wherein at least the first inner ring of the first set of crimped rings is in contact with the first anchoring member and at least the second inner ring of the second set of crimped rings is in contact with the second anchoring member.

5. The artificial intervertebral disc according to claim 4, wherein the contact between the first inner ring of the first set of crimped rings and the first anchoring member comprises an interference fit and the contact between the second inner ring of the second set of rings crimped and the second anchoring member includes an interference fit.

6. The artificial intervertebral disc according to claim 1, wherein a face of the first inner ring and a face of the first outer ring between which the column is supported are complementary to one another.

7. The artificial intervertebral disc according to claim 6, wherein one of the complementary faces comprises a concave part and the other of the complementary faces comprises a convex part.

8. The artificial intervertebral disc according to claim 7, wherein the complementary face of the first inner ring comprises a concave part and the complementary face of the first outer ring comprises a convex part.

9. The artificial intervertebral disc according to claim 1, wherein one face of the second inner ring and one face of the second outer ring between which the column is supported are complementary to one another.

10. The artificial intervertebral disc according to claim 9, wherein one of the complementary faces comprises a concave part and the other of the complementary faces comprises a convex part.

11. The artificial intervertebral disc according to claim 10, wherein the complementary face of the second inner ring comprises a concave part and the complementary face of the second outer ring comprises a convex part.

12. The artificial intervertebral disc according to claim 1, wherein the column includes at least one linker around at least a portion of a perimeter of the column.

13. The artificial intervertebral disc according to claim 12, wherein the linker is around the entire perimeter of the column.

14. The artificial intervertebral disc according to claim 12, wherein the linker provides additional flexibility to the column.

15. The artificial intervertebral disc according to claim 14, wherein the additional flexibility allows a first part of the column on one side of the linker to be bent from a second part of the column on the other side of the linker.

16. The artificial intervertebral disc according to claim 12, wherein the linker is in an essentially equidistant position from each of the first anchoring member and the second anchoring member.

17. The artificial intervertebral disc according to claim 1, wherein the column has a hole therethrough.

18. The artificial intervertebral disc according to claim 17, wherein at least one of the column and the hole in the column has a substantially circular cross section.

19. The artificial intervertebral disc according to claim 18, wherein each of the column and the hole in the column has a substantially circular cross section.

20. The artificial intervertebral disc according to claim 19, wherein the filling of the column is disposed within the orifice of the column.

21. The artificial intervertebral disc according to claim 20, wherein the elastomer is selected from the group consisting of: (a) silicone; (b) a urethane; and (c) a thermoplastic elastomer.

22. The artificial intervertebral disc according to claim 1, wherein at least one of the first anchoring member and the second anchoring member has a porous region to allow internal growth of the tissue.

23. The artificial intervertebral disc according to claim 22, wherein each of the first anchoring member and the second anchoring member has a region to allow internal growth of the tissue.

24. The artificial intervertebral disc according to claim 1, wherein at least one of the first anchoring member and the second anchoring member has at least one protrusion to hold an end plate of the respective vertebral body.

25. The artificial intervertebral disc according to claim 24, wherein each of the first anchoring member and the second anchoring member has at least one protrusion to hold an end plate of the respective vertebral body.

26. The artificial intervertebral disc according to claim 24, wherein the protuberance is a barb with a conical shape.

27. The artificial intervertebral disc according to claim 1, wherein the artificial intervertebral disc is configured to be implanted by at least one method selected from the group consisting of: (a) posterior implant; and (b) previous implant.

28. A method for constructing an artificial intervertebral disc, wherein the artificial intervertebral disc is configured for the implant in a spine between a first vertebral body and a second vertebral body, wherein the first vertebral body has an end plate of the first vertebral body, the second vertebral body has an end plate of the second vertebral body and the end plate of the first vertebral body and the End plates of the second vertebral body are opposite one another, comprising: Providing a column comprising polyester; Providing a filling of the column comprising an elastomer; Providing a first set of crimped rings comprising a first inner ring and a first outer ring, wherein the first set of crimped rings is disposed adjacent a first end of the column and wherein at least a portion of the column is held between the first inner ring and the first outer ring; Providing a second set of crimped rings comprising a second inner ring and a second outer ring, wherein the second set of crimped rings is disposed adjacent a second end of the column and wherein at least a portion of the column is held between the second inner ring and the second outer ring; Providing a first anchoring member configured for positioning against the end plate of the first vertebral body; and Providing a second anchoring member configured for positioning against the end plate of the second vertebral body; Wherein at least one of the first inner ring and the first outer ring of the first set of crimped rings provides a mechanism for mounting the column to the first anchoring member; and wherein at least one of the second inner ring and the second outer ring of the second set of crimped rings provides a mechanism for mounting the column to the second anchoring member.

29. The method according to claim 28, wherein the steps are performed in the order mentioned.