CA2556364A1 - Artificial intervertebral disc having an articulating joint - Google Patents

Artificial intervertebral disc having an articulating joint Download PDF

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Publication number
CA2556364A1
CA2556364A1 CA002556364A CA2556364A CA2556364A1 CA 2556364 A1 CA2556364 A1 CA 2556364A1 CA 002556364 A CA002556364 A CA 002556364A CA 2556364 A CA2556364 A CA 2556364A CA 2556364 A1 CA2556364 A1 CA 2556364A1
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CA
Canada
Prior art keywords
plate
intervertebral device
plates
elongated member
articulating joint
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002556364A
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French (fr)
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CA2556364C (en
Inventor
Rafail Zubok
Michael W. Dudasik
Joseph P. Errico
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Spinecore Inc
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Individual
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Priority to CA2733450A priority Critical patent/CA2733450C/en
Publication of CA2556364A1 publication Critical patent/CA2556364A1/en
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Publication of CA2556364C publication Critical patent/CA2556364C/en
Expired - Fee Related legal-status Critical Current
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
    • A61F2/442—Intervertebral or spinal discs, e.g. resilient
    • A61F2/4425—Intervertebral or spinal discs, e.g. resilient made of articulated components
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
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    • A61F2/30721—Accessories
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F2002/30362—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit with possibility of relative movement between the protrusion and the recess
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30451—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements soldered or brazed or welded
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30563—Special structural features of bone or joint prostheses not otherwise provided for having elastic means or damping means, different from springs, e.g. including an elastomeric core or shock absorbers
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F2310/00005—The prosthesis being constructed from a particular material
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    • A61F2310/00029—Cobalt-based alloys, e.g. Co-Cr alloys or Vitallium

Abstract

An intervertebral device includes a first plate (10) having an outer face (12) and an inner face (18), and a second plate 30 juxtaposed with the first plate, the second plate having an outer face (32), an inner face (34) that opposes the first plate (10) and a concavity (38) that opposes the first plate (10).
The device includes an elongated member (50) extending from the first plate (10) toward the second plate (30), the elongated member (50) having a distal end (54) with a spherical surface that is engageable with the concavity (38) of the second plate (30) for providing an articulating joint between the first and second plates. The device also includes a resilient member (60) in contact with the elongated member (50) for counteracting compressive loads on the plates, the resilient member (60) being surrounded by the concavity (38) of the second plate (30).

Claims (24)

1. An intervertebral device comprising:
a first plate having an outer face and an inner face;
a second plate juxtaposed with said first plate, said second plate having an outer face, an inner face that opposes said first plate, and a concavity that opposes said first plate;
an elongated member extending from said first plate toward said second plate, said elongated member having a distal end with a spherical surface that is engageable with said concavity of said second plate for providing an articulating joint between said first and second plates;
a resilient member in contact with said elongated member for counteracting compressive loads on said plates, wherein said resilient member is surrounded by said concavity of said second plate.
2. The intervertebral device as claimed in claim 1, wherein said elongated member is slidably attached to said first plate.
3. The intervertebral device as claimed in claim 2, wherein the inner face of said first plate has a projection that extends toward the inner face of said second plate, said projection having a bore formed therein that is adapted to receive said elongated member.
4. The intervertebral device as claimed in claim 3, wherein said resilient member extends at least partially around said projection and said elongated member.
5. The intervertebral device as claimed in claim 1, wherein said first and second plates have respective central regions and peripheral regions, and wherein said concavity is located in the central region of said second plate, and wherein said resilient member extends between the central regions of said first and second plates.
6. The intervertebral device as claimed in claim 1, wherein said first and second plates comprise materials selected from the group consisting of metal and metal alloys.
7. The intervertebral device as claimed in claim 6, wherein the metal alloys comprise materials selected from the group consisting of cobalt-chromium and titanium.
8. The intervertebral device as claimed in claim 1, wherein the outer face of at least one of said first and second plates includes an osteoconductive surface.
9. The intervertebral device as claimed in claim 8, wherein said osteoconductive surface comprises a mesh overlying the outer face of the at least one of said first and second plates.
10. The intervertebral device as claimed in claim 9, wherein said mesh is deflectable under compressive loads.
11. The intervertebral device as claimed in claim 1, wherein said elongated member is mushroom-shaped.
12. The intervertebral device as claimed in claim 1, wherein said elongated member is an element selected from the group consisting of a pin, a rivet, a plug, a dowel and a screw.
13. The intervertebral device as claimed in claim 1, wherein the spherical surface at the distal end of said elongated member has a constant radius of curvature.
14. The intervertebral device as claimed in claim 13, wherein the concavity of said second plate has a constant radius of curvature that is substantially similar to the constant radius of curvature of the spherical surface at the distal end of said elongated member.
15. The intervertebral device as claimed in claim 1, wherein said resilient member comprises a spring.
16. The intervertebral device as claimed in claim 1, wherein said resilient member comprises an O-ring made of an elastomeric material.
17. An intervertebral device comprising:
a first plate having an outer face and an inner face;
a second plate juxtaposed with said first plate, said second plate having an outer face and an inner face that opposes said first plate;
a ball and socket articulating joint provided between said first and second plates;
a resilient member in contact with the ball portion of said ball and socket articulating joint for counteracting compressive loads on said plates, wherein said resilient member extends between said first and second plates and is surrounded by the socket portion of said articulating joint.
18. The intervertebral device as claimed in claim 17, wherein the ball portion of said articulating joint is slideably coupled with one of said plates.
19. The intervertebral device as claimed in claim 17, wherein the inner face of said first plate includes a bore and the ball portion of said articulating joint includes an elongated member that is slideably coupled with said bore.
20. The intervertebral device as claimed in claim 17, wherein the socket portion of said articulating joint comprises a concavity that is adapted to receive the ball portion of said articulating joint, and wherein said concavity surrounds said resilient member.
21. The intervertebral device as claimed in claim 17, wherein said articulating joint is a metal-on-metal articulating joint.
22. An intervertebral device comprising:
a first plate having an outer face and an inner face;
a second plate juxtaposed with said first plate, said second plate having an outer face and an inner face that opposes said first plate, the inner face of said second plate having a concavity;
an elongated member extending from the inner face of said first plate toward said second plate, said elongated member being slideably attached to said first plate and having a distal end with a spherical surface that forms a ball and socket-like articulating joint between said first and second plates;
a resilient member in contact with the distal end of said elongated member for counteracting compressive loads on said plates.
23. The intervertebral device as claimed in claim 22, wherein said concavity surrounds said 'resilient member.
24. The intervertebral device as claimed in claim 22, wherein said elongated member has a mushroom-shaped head at the distal end thereof.
CA2556364A 2004-02-19 2005-02-16 Artificial intervertebral disc having an articulating joint Expired - Fee Related CA2556364C (en)

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US60/546,027 2004-02-19
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JP2010017564A (en) 2010-01-28
JP4854775B2 (en) 2012-01-18
US8070814B2 (en) 2011-12-06
WO2005079407A3 (en) 2006-11-23
EP1740130A2 (en) 2007-01-10
EP1740130A4 (en) 2011-08-10
US20050192670A1 (en) 2005-09-01
JP4554623B2 (en) 2010-09-29
AU2011200724A1 (en) 2011-03-10
AU2011200724B2 (en) 2012-05-03
US7452380B2 (en) 2008-11-18
AU2005214915B2 (en) 2010-11-25
US20070150062A1 (en) 2007-06-28
AU2005214915A1 (en) 2005-09-01
US7214244B2 (en) 2007-05-08
JP2007522879A (en) 2007-08-16
CA2556364C (en) 2011-05-17
WO2005079407A2 (en) 2005-09-01
CA2733450C (en) 2013-01-08
US20090048674A1 (en) 2009-02-19
CA2733450A1 (en) 2005-09-01

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