WO2004016069A2 - Shaped memory artificial disc and methods of engrafting the same - Google Patents
Shaped memory artificial disc and methods of engrafting the same Download PDFInfo
- Publication number
- WO2004016069A2 WO2004016069A2 PCT/US2003/025811 US0325811W WO2004016069A2 WO 2004016069 A2 WO2004016069 A2 WO 2004016069A2 US 0325811 W US0325811 W US 0325811W WO 2004016069 A2 WO2004016069 A2 WO 2004016069A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- endplate
- artificial disc
- vertebral body
- memory alloy
- shaped memory
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/442—Intervertebral or spinal discs, e.g. resilient
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/0077—Special surfaces of prostheses, e.g. for improving ingrowth
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30721—Accessories
- A61F2/30742—Bellows or hose-like seals; Sealing membranes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
- A61F2002/3006—Properties of materials and coating materials
- A61F2002/30092—Properties of materials and coating materials using shape memory or superelastic materials, e.g. nitinol
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30537—Special structural features of bone or joint prostheses not otherwise provided for adjustable
- A61F2002/30556—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting thickness
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30565—Special structural features of bone or joint prostheses not otherwise provided for having spring elements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30576—Special structural features of bone or joint prostheses not otherwise provided for with extending fixation tabs
- A61F2002/30578—Special structural features of bone or joint prostheses not otherwise provided for with extending fixation tabs having apertures, e.g. for receiving fixation screws
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30841—Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/442—Intervertebral or spinal discs, e.g. resilient
- A61F2002/444—Intervertebral or spinal discs, e.g. resilient for replacing the nucleus pulposus
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2002/448—Joints for the spine, e.g. vertebrae, spinal discs comprising multiple adjacent spinal implants within the same intervertebral space or within the same vertebra, e.g. comprising two adjacent spinal implants
-
- 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
- A61F2210/00—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2210/0014—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof using shape memory or superelastic materials, e.g. nitinol
- A61F2210/0019—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof using shape memory or superelastic materials, e.g. nitinol operated at only one temperature whilst inside or touching the human body, e.g. constrained in a non-operative shape during surgery, another temperature only occurring before the operation
-
- 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
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
-
- 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
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0004—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof adjustable
- A61F2250/0009—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof adjustable for adjusting thickness
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S606/00—Surgery
- Y10S606/907—Composed of particular material or coated
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S606/00—Surgery
- Y10S606/907—Composed of particular material or coated
- Y10S606/911—Memory material
Definitions
- the present invention relates to artificial intervertebral discs and, more particularly, artificial intervertebral discs constructed from shaped memory alloys.
- the vertebrae of the human spine are arranged in a column with one vertebra on top of the next. Between adjacent vertebrae exists an intervertebral disc that transmits force between adjacent vertebrae and provides a cushion between the adjacent vertebrae.
- Degeneration or other deformities in the intervertebral disc can cause back pain.
- a diseased disc repeatedly impinges upon neurological structures or is determined to be a pain generator
- surgeons conventionally treat the diseased disc by surgically removing the diseased disc and inserting a bone graft or other device in the space vacated by the diseased disc.
- the adjacent vertebrae are then immobilized relative to one another with stabilization hardware.
- the vertebrae grow into one solid piece of bone.
- Ratron provides another device that attempts to mimic the replaced intervertebral disc
- the Ratron device includes the same endplates separated by an elastic post and elastically deformable partitions
- the Ratron device is relatively impractical, however, because the placement of the elastic post and the elastically deformable partitions is difficult and vanes on a case- by-case basis
- manufacturing the device prior to surgical implantation is difficult
- bone or other tissue growth into the intervertebral space can foul the device making it inoperable
- adjacent vertebrae need significant separation to allow for insertion of the prosthetic device potentially causing trauma to the surrounding structures
- the elastic material may experience plastic deformation causing failure of the prosthesis
- the elastic material contained in the Ratron device may degrade over time.
- an artificial intervertebral disc comprises an upper and a lower endplate.
- the upper and lower endplate attach to lower surface of the upper vertebral body and the upper surface of the lower vertebral body respectively.
- a core resides between the upper and lower endplate comprising a shaped memory alloy.
- FIG. 1 is a cross-sectional, anterior view of adjacent vertebral bodies with an artificial disc consistent with an embodiment of the present invention
- FIG. 2 is a lateral elevation view of the device of FIG. 1;
- FIG. 3 is a cross-sectional, anterior view of adjacent vertebral bodies with an artificial disc consistent with another embodiment of the present invention
- FIG 4 is a cross-sectional, anterior view of adjacent vertebral bodies with an artificial disc consistent with another embodiment of the present invention
- FIG 5 is an elevations view of an artificial disc consistent with yet another embodiment of the present invention.
- FIGS 1-5 generally show the present invention on an eye level, off the shelf view with fixation spikes in phantom
- FIG 1 shows a cross section of an anterior view of a portion of a spinal column 100 with an artificial disc 102
- FIG 2 shows a lateral, elevation view of spinal column 100 with artificial disc 102
- Disc 102 is implanted in an intervertebral space 104 situated between an upper vertebral body 106 and a lower vertebral body 108
- Disc 102 includes an upper endplate 110, a lower endplate 112, and a core 114
- Upper endplate 110 and lower endplate 112 should be formed of a biocompatible metal including shaped memory alloys, other metallic alloys, or plastic
- endplates are made from titanium, but any biocompatible materials are satisfactory If, for example, upper endplate 110 and lower endplate
- FIG 4 shows an alternative attachment means where, for example, endplates 110 and 112 have fixation tabs 118 through which screws 120 are inserted to couple endplates 110 and 1 12 to upper vertebral body 106 and lower vertebral body 108
- Upper endplate 110 and lower endplate 112 are shown with a lattice and/or biochemical coating to enhance bone ingrowth and encourage long- term fixation of the plates to the vertebral bodies
- the plates could have other devices to encourage bone growth, such as, ridges, ribs, scars, st ⁇ ations, or the like
- a layer of adhesive or tape could be applied to assist in fixation of the plates
- Core 114 comprises a shaped memory alloy (SMA) SMAs are a group of materials that demonstrate an ability to return to some previously defined shape or size when subjected to the appropriate thermal procedure
- SMA material is considered to be two-way shaped memory alloys because they will return to the deformed shape upon proper thermal activation SMAs include Ag-Cd alloys, Cu-Al-Ni alloys, Cu- Sn alloys, Cu-Zn alloys, Cu-Zn-Si alloys, Cu-Zn-Sn alloys, Cu-Zn-Al alloys, In-Ti alloys, Ni-Al alloys, Ni-Ti alloys, Fe-Pt alloys, Mn-Cu alloys, Fe-Mn-Si alloys, and the like Currently, Ni-Ti alloys (a k a Nitinol) are considered a good SMA for medical applications. Making core 114 out of SMAs provides the ability to implant a compact artificial disc during the procedure requiring less distraction of upper vertebral body 106 and lower vertebral body 108 An activation signal would
- core 114 could be a solid piece of SMA material It is believed core 1 14 would function better if core 114 comprises a series of SMA members 124 extending between upper endplate 110 and lower endplate 1 12 As shown, each SMA member 124 is a loop of SMA material to provide some vertical elastic deformation ability SMA members 124, however, could have a number of constructions, including, for example, a series of columns, an arc or curved shape, a flanged surface, coils, a zigzag pattern, or the like. Further, each member 124 could have different or the same construction and made out of different or the same SMAs. The variation of the shapes and materials would provide surgical control of the forces associated with core 114. In particular, the SMAs could be chosen, shaped, and designed to specifically replicate and resist axial, rotational, sagital, and coronal forces using conventional design methods.
- a covering 126 should be deployed around core 114 to prevent tissue, scarring, or bone growth from interfering with disc 102.
- Covering 126 could be formed of a biocompatible metal, an alloy, or plastic. Conventionally, covering 126 would be a GORTEX® material, but any biocompatible material would function. Alternatively to covering 126, the annulus surrounding the disc could be used. In this case, the surgeon would preserve the majority of the annulus during the discectomy.
- FIGS. 1 and 2 show disc 102 with a "balanced" core 114.
- balanced means that SMAs 124 are approximately identical.
- disc 302 is shown.
- Disc 302 has an "unbalanced" core 314 where the individual SMAs 324 contained in core 314 are designed with different sizes, radii, and elastic deformation coefficients. As implanted, unbalanced disc 302 applies different forces than a balanced disc would deploy. Further, because of the unique feature associated with SMA material, compact SMAs 324c could be implanted in an unexpanded state.
- thermal activation of SMAs 324c could apply expansion force causing SMAs 324c to become less compact and move disc 302 from unbalanced core 314 to a more balanced core formation.
- the expansion of SMAs 324c would apply a force represented by Arrows A and would be designed to correct the spines curvature or the like.
- multiple discs could be used aligned within the intervertebral space. Each of these multiple discs may be have a balanced core, but the core of the first disc may be different than the core of the second disc, etc , which would approximate the effect of an unbalanced core
- FIG 5 shows that an artificial disc 600 Artificial disc 600 is essentially the same as disc 102 and disc 302 Disc 600 is divided into a first part 602 and a second part 604 Disc 600 has endplates, bone growth material, and a core similar to the above discs, and those pieces will not be re- explained here
- An interlocking portion 606 has a first interlocking piece 608 attached to first part 602 and a second interlocking piece 610 attached to second part 604 While interlocking portion 606 is shown as a relatively simple device, one of ordinary skill in the art would recognize other more elaborate interlocking portions could be designed and used and the simple design shown is for convenience and ease of explanation
- Interlocking pieces 608 and 610 can be attached to parts 602 and 604 by being a single integrated unit, screwed, glued, taped, adhered, or the like Interlocking pieces 608 and 610 would be made of SMAs and are shown in the activated position Activated, interlocking pieces 60
- FIG 5 shows installing two halves of an artificial disc and linking the two halves together with interlocking portion 606
- the side-by-side modules could be linked (similar to FIG 5) or function independently
- Using several smaller modules to mimic the removed disc instead of one larger artificial disc would facilitate implantation of the artificial disc using minimally invasive techniques
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003263888A AU2003263888A1 (en) | 2002-08-19 | 2003-08-15 | Shaped memory artificial disc and methods of engrafting the same |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US40448102P | 2002-08-19 | 2002-08-19 | |
US60/404,481 | 2002-08-19 | ||
US10/641,530 US7101400B2 (en) | 2002-08-19 | 2003-08-14 | Shaped memory artificial disc and methods of engrafting the same |
US10/641,530 | 2003-08-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2004016069A2 true WO2004016069A2 (en) | 2004-02-26 |
WO2004016069A3 WO2004016069A3 (en) | 2004-05-21 |
Family
ID=31891431
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2003/025811 WO2004016069A2 (en) | 2002-08-19 | 2003-08-15 | Shaped memory artificial disc and methods of engrafting the same |
Country Status (3)
Country | Link |
---|---|
US (1) | US7101400B2 (en) |
AU (1) | AU2003263888A1 (en) |
WO (1) | WO2004016069A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1770302A1 (en) * | 2005-09-30 | 2007-04-04 | Acandis GmbH & Co. KG | Damping method and device |
Families Citing this family (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060129242A1 (en) * | 2001-12-28 | 2006-06-15 | Brian Bergeron | Pseudo arthrosis device |
WO2004089240A2 (en) * | 2003-04-04 | 2004-10-21 | Theken Disc, Llc | Artificial disc prosthesis |
US20090076614A1 (en) * | 2007-09-17 | 2009-03-19 | Spinalmotion, Inc. | Intervertebral Prosthetic Disc with Shock Absorption Core |
ES2287686T3 (en) * | 2003-11-07 | 2007-12-16 | Impliant Ltd. | VERTEBRAL PROTESIS. |
CN100370604C (en) * | 2004-04-15 | 2008-02-20 | 鸿富锦精密工业(深圳)有限公司 | Heat interface material and its producing method |
CN100389166C (en) * | 2004-04-29 | 2008-05-21 | 鸿富锦精密工业(深圳)有限公司 | Thermal interface material and its production method |
US8172904B2 (en) | 2004-06-30 | 2012-05-08 | Synergy Disc Replacement, Inc. | Artificial spinal disc |
US9237958B2 (en) | 2004-06-30 | 2016-01-19 | Synergy Disc Replacement Inc. | Joint prostheses |
EP1773256B1 (en) | 2004-06-30 | 2019-11-27 | Synergy Disc Replacement Inc. | Artificial spinal disc |
US20070093822A1 (en) * | 2005-09-28 | 2007-04-26 | Christof Dutoit | Apparatus and methods for vertebral augmentation using linked expandable bodies |
FR2891135B1 (en) | 2005-09-23 | 2008-09-12 | Ldr Medical Sarl | INTERVERTEBRAL DISC PROSTHESIS |
WO2007075878A2 (en) * | 2005-12-22 | 2007-07-05 | Endius, Inc. | Methods and devices for replacement of intervertebral discs |
US20070162132A1 (en) | 2005-12-23 | 2007-07-12 | Dominique Messerli | Flexible elongated chain implant and method of supporting body tissue with same |
US20110282392A1 (en) * | 2006-10-30 | 2011-11-17 | Tissue Regeneration Systems, Inc. | Degradable cage for bone fusion |
US7905922B2 (en) | 2006-12-20 | 2011-03-15 | Zimmer Spine, Inc. | Surgical implant suitable for replacement of an intervertebral disc |
US20080177389A1 (en) * | 2006-12-21 | 2008-07-24 | Rob Gene Parrish | Intervertebral disc spacer |
US20080167686A1 (en) * | 2007-01-05 | 2008-07-10 | Warsaw Orthopedic, Inc. | Non-Rigid Intervertebral Spacers |
US20080167718A1 (en) * | 2007-01-05 | 2008-07-10 | Warsaw Orthopedic, Inc. | Active Vertebral Prosthetic Device |
AU2008316600B2 (en) | 2007-10-25 | 2014-09-18 | Jeffery D. Arnett | Systems and methods for vertebral disc replacement |
US8267939B2 (en) | 2008-02-28 | 2012-09-18 | Stryker Spine | Tool for implanting expandable intervertebral implant |
US8187333B2 (en) * | 2008-09-18 | 2012-05-29 | Mayer Peter L | Intervertebral disc prosthesis and method for implanting and explanting |
US8814937B2 (en) | 2008-09-18 | 2014-08-26 | Peter L. Mayer | Intervertebral disc prosthesis, method for assembling, method for implanting prosthesis, and method for explanting |
US8226724B2 (en) * | 2009-06-18 | 2012-07-24 | Doty Keith L | Intervertebral spinal disc prosthesis |
FR2974497A1 (en) * | 2011-04-27 | 2012-11-02 | Centre Nat Rech Scient | INTERVERTEBRAL DISC PROSTHESIS IN THERMOPLASTIC MATERIAL WITH A GRADIENT OF MECHANICAL PROPERTIES |
US8277505B1 (en) | 2011-06-10 | 2012-10-02 | Doty Keith L | Devices for providing up to six-degrees of motion having kinematically-linked components and methods of use |
KR101216211B1 (en) | 2011-08-05 | 2012-12-28 | 강지훈 | Implant for treating of the spondylopathy and method of manufacturing thereof |
WO2013025702A1 (en) | 2011-08-16 | 2013-02-21 | Osteospring Medical, Inc. | Wedge shaped fracture fixation devices and methods for using the same |
EP2729092B1 (en) | 2011-08-16 | 2016-09-21 | Stryker European Holdings I, LLC | Expandable implant |
US8287598B1 (en) | 2011-12-05 | 2012-10-16 | TrueMotion Spine, Inc. | True spinal motion preserving, shock absorbing, intervertebral spinal disc prosthesis |
US9393126B2 (en) | 2012-04-20 | 2016-07-19 | Peter L. Mayer | Bilaterally placed disc prosthesis for spinal implant and method of bilateral placement |
US9364339B2 (en) | 2012-04-30 | 2016-06-14 | Peter L. Mayer | Unilaterally placed expansile spinal prosthesis |
US10342675B2 (en) | 2013-03-11 | 2019-07-09 | Stryker European Holdings I, Llc | Expandable implant |
US10893951B2 (en) * | 2018-08-07 | 2021-01-19 | Minimally Invasive Spinal Technology, LLC | Device and method for correcting spinal deformities in patients |
CN110368149B (en) * | 2019-08-05 | 2024-03-15 | 北京爱康宜诚医疗器材有限公司 | Intervertebral disc prosthesis |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6488710B2 (en) * | 1999-07-02 | 2002-12-03 | Petrus Besselink | Reinforced expandable cage and method of deploying |
US6491724B1 (en) * | 1999-08-13 | 2002-12-10 | Bret Ferree | Spinal fusion cage with lordosis correction |
US6558423B1 (en) * | 1999-05-05 | 2003-05-06 | Gary K. Michelson | Interbody spinal fusion implants with multi-lock for locking opposed screws |
US6620196B1 (en) * | 2000-08-30 | 2003-09-16 | Sdgi Holdings, Inc. | Intervertebral disc nucleus implants and methods |
Family Cites Families (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2677369A (en) * | 1952-03-26 | 1954-05-04 | Fred L Knowles | Apparatus for treatment of the spinal column |
US3426364A (en) * | 1966-08-25 | 1969-02-11 | Colorado State Univ Research F | Prosthetic appliance for replacing one or more natural vertebrae |
DE2340546A1 (en) * | 1973-08-10 | 1975-02-27 | Pfaudler Werke Ag | METALLIC IMPLANT AND PROCEDURE FOR ITS MANUFACTURING |
US4309777A (en) * | 1980-11-13 | 1982-01-12 | Patil Arun A | Artificial intervertebral disc |
CA1283501C (en) * | 1987-02-12 | 1991-04-30 | Thomas P. Hedman | Artificial spinal disc |
US5123926A (en) * | 1991-02-22 | 1992-06-23 | Madhavan Pisharodi | Artificial spinal prosthesis |
US5320644A (en) * | 1991-08-30 | 1994-06-14 | Sulzer Brothers Limited | Intervertebral disk prosthesis |
ATE141149T1 (en) * | 1992-04-21 | 1996-08-15 | Sulzer Medizinaltechnik Ag | ARTIFICIAL DISC BODY |
FR2709949B1 (en) * | 1993-09-14 | 1995-10-13 | Commissariat Energie Atomique | Intervertebral disc prosthesis. |
US5458642A (en) * | 1994-01-18 | 1995-10-17 | Beer; John C. | Synthetic intervertebral disc |
FR2728159B1 (en) * | 1994-12-16 | 1997-06-27 | Tornier Sa | ELASTIC DISC PROSTHESIS |
SE510125C2 (en) * | 1996-01-22 | 1999-04-19 | Handevelop Ab | A prosthetic device |
US5827328A (en) * | 1996-11-22 | 1998-10-27 | Buttermann; Glenn R. | Intervertebral prosthetic device |
US5893889A (en) * | 1997-06-20 | 1999-04-13 | Harrington; Michael | Artificial disc |
US6136031A (en) * | 1998-06-17 | 2000-10-24 | Surgical Dynamics, Inc. | Artificial intervertebral disc |
US6296664B1 (en) * | 1998-06-17 | 2001-10-02 | Surgical Dynamics, Inc. | Artificial intervertebral disc |
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 |
WO2000022998A1 (en) * | 1998-10-21 | 2000-04-27 | Jackson Roger P | Spinal fusion apparatus and method |
CA2376097A1 (en) * | 1999-06-04 | 2000-12-14 | Sdgi Holdings, Inc. | Artificial disc implant |
US6454806B1 (en) * | 1999-07-26 | 2002-09-24 | Advanced Prosthetic Technologies, Inc. | Spinal surgical prosthesis |
AU2624801A (en) * | 1999-12-30 | 2001-07-16 | Osteotech, Inc. | Intervertebral implants |
US6585527B2 (en) * | 2001-05-31 | 2003-07-01 | Samtec, Inc. | Compliant connector for land grid array |
DE10132588C2 (en) * | 2001-07-05 | 2003-05-22 | Fehling Instr Gmbh | Disc prosthesis |
US20030083749A1 (en) * | 2001-10-31 | 2003-05-01 | Kuslich Stephen D. | Corpectomy device |
US20040010318A1 (en) * | 2002-05-15 | 2004-01-15 | Ferree Bret A. | Conformable endplates for artificial disc replacement (ADR) devices and other applications |
-
2003
- 2003-08-14 US US10/641,530 patent/US7101400B2/en not_active Expired - Lifetime
- 2003-08-15 AU AU2003263888A patent/AU2003263888A1/en not_active Abandoned
- 2003-08-15 WO PCT/US2003/025811 patent/WO2004016069A2/en not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6558423B1 (en) * | 1999-05-05 | 2003-05-06 | Gary K. Michelson | Interbody spinal fusion implants with multi-lock for locking opposed screws |
US6488710B2 (en) * | 1999-07-02 | 2002-12-03 | Petrus Besselink | Reinforced expandable cage and method of deploying |
US6491724B1 (en) * | 1999-08-13 | 2002-12-10 | Bret Ferree | Spinal fusion cage with lordosis correction |
US6620196B1 (en) * | 2000-08-30 | 2003-09-16 | Sdgi Holdings, Inc. | Intervertebral disc nucleus implants and methods |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1770302A1 (en) * | 2005-09-30 | 2007-04-04 | Acandis GmbH & Co. KG | Damping method and device |
WO2007039271A3 (en) * | 2005-09-30 | 2007-05-31 | Acandis Gmbh & Co Kg | Damping apparatus, use of a shape memory alloy and method for changing damping characteristics |
US8328962B2 (en) | 2005-09-30 | 2012-12-11 | Acandis Gmbh & Co. Kg | Damping apparatus, use of a shape memory alloy and method for changing damping characteristics |
Also Published As
Publication number | Publication date |
---|---|
US7101400B2 (en) | 2006-09-05 |
AU2003263888A1 (en) | 2004-03-03 |
AU2003263888A8 (en) | 2004-03-03 |
WO2004016069A3 (en) | 2004-05-21 |
US20040078080A1 (en) | 2004-04-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7101400B2 (en) | Shaped memory artificial disc and methods of engrafting the same | |
US20060293753A1 (en) | Corrective artificial disc | |
US7690381B2 (en) | Intervertebral prosthetic disc and method for installing using a guidewire | |
US8911498B2 (en) | Intervertebral prosthetic disc | |
US5749916A (en) | Fusion implant | |
JP5450899B2 (en) | Plastically deformable interosseous device | |
US7909874B2 (en) | Artificial spinal disk | |
US8672980B2 (en) | Implant retaining device | |
US8486146B2 (en) | Orthopedic device assembly with elements coupled by a retaining structure | |
US20040010315A1 (en) | Self-expanding intervertebral device | |
JP3224060U (en) | Spacer used for implanting in or between bones of an object, and implant component and implant system including the spacer | |
WO2004034924A2 (en) | Minimally invasive support implant device and method | |
JP2010510026A (en) | Method and apparatus for minimally invasive modular interbody fusion device | |
WO2006133315A2 (en) | Pseudo arthrosis device | |
EP1467684A1 (en) | Spinal disc implant | |
WO2006127848A2 (en) | Interlocked modular disc nucleus prosthesis | |
EP2173266A1 (en) | Method for stabilizing a facet joint | |
WO2008022206A2 (en) | Spinal implant | |
EP1887986A2 (en) | Interlocked modular disc nucleus prosthesis | |
US20090138088A1 (en) | Mobile spinal fusion implant | |
WO2002045592A2 (en) | Implant retaining device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A2 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A2 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
122 | Ep: pct application non-entry in european phase | ||
NENP | Non-entry into the national phase |
Ref country code: JP |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: JP |