Source: http://www.google.com/patents/US7704280?ie=ISO-8859-1
Timestamp: 2014-03-17 15:58:15
Document Index: 82830332

Matched Legal Cases: ['art 3', 'art 4', 'arts 3', 'arts 3', 'art 12', 'art 12', 'art 4', 'art 12', 'art 3', 'art 3', 'art 3', 'Application No. 03826781', 'Application No. 03']

Patent US7704280 - Intervertebral implant comprising temporary blocking means - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsAn intervertebral implant including a top part, a bottom part and a joint arranged axially between the top part and the bottom part. The top part includes a top surface suitable to be placed on the base plate of a body of the vertebra adjacent and above the site of removal. The bottom part has a bottom...http://www.google.com/patents/US7704280?utm_source=gb-gplus-sharePatent US7704280 - Intervertebral implant comprising temporary blocking meansAdvanced Patent SearchPublication numberUS7704280 B2Publication typeGrantApplication numberUS 11/338,453Publication dateApr 27, 2010Filing dateJan 23, 2006Priority dateJul 22, 2003Fee statusPaidAlso published asCA2542511A1, CA2542511C, CN1819805A, CN100566678C, DE50311234D1, EP1648351A1, EP1648351B1, US20060229724, WO2005007041A1Publication number11338453, 338453, US 7704280 B2, US 7704280B2, US-B2-7704280, US7704280 B2, US7704280B2InventorsBeat Lechmann, Roger B�rki, Robert FriggOriginal AssigneeSynthes Usa, LlcExport CitationBiBTeX, EndNote, RefManPatent Citations (11), Non-Patent Citations (6), Referenced by (6), Classifications (33), Legal Events (6) External Links: USPTO, USPTO Assignment, EspacenetIntervertebral implant comprising temporary blocking meansUS 7704280 B2Abstract An intervertebral implant including a top part, a bottom part and a joint arranged axially between the top part and the bottom part. The top part includes a top surface suitable to be placed on the base plate of a body of the vertebra adjacent and above the site of removal. The bottom part has a bottom surface suitable to be placed on the cover plate of a body of the vertebra adjacent and below the site of removal. The joint includes a convex joint part with a first articular surface and a joint shell matching it, with a second articular surface mounted in a sliding manner on the first articular surface. The intervertebral implant including a temporarily locking mechanism to fix the two parts relative to one another.
a size of each of the first bottom curved groove and the second bottom curved groove decreases as a distance from the ventral side increases. Description
CROSS-REFERENCE TO RELATED APPLICATION This application is a continuation of International Patent Publication PCT/CH2003/000496, filed Jul. 22, 2003, which is incorporated by reference herein in its entirety.
BACKGROUND OF THE INVENTION Intervertebral disks often become damaged creating discomfort for a patient. It is known that partial or total removal of a damaged disk may alleviate some of this discomfort but may limit the natural function of the spine. Thus, nowadays following the removal of a damaged, natural intervertebral disk or a damaged nucleus pulposus of a natural intervertebral disk, implants or prosthesises are placed in the intervertebral space between the two vertebra adjacent to the site of removal. The aim of implanting such implants is to bring about as natural state as possible, particularly duplicating the original height of the intervertebral disk and consequently restoring the original distance between two adjacent bodies of the vertebra. Furthermore, movements of adjacent bodies of the vertebra relative to one another should be able to be carried out with minimal hindrance of their natural function. For this purpose the retention of the ability to move when bending forward or backward, i.e. the flexion and the extension of the bodies of the vertebra as well as the lateral bending of the intervertebral bodies within the natural limits, is desirable. It is also desirable that the natural ligaments and muscles along the spine are left substantially intact, to further stabilize the movements of a mechanical replacement for a intervertebral disk.
Intervertebral implants for maintaining the displacement between vertebrae adjacent to a removed intervertebral disc and for allowing the movement of vertebra with respect to one another are known in the art. For example, U.S. Pat. No. 5,556,431 to B�ttner shows an implant comprising a bottom cover plate and a top cover plate, the external surfaces of which can be placed on, respectively, adjacent vertebra as well as a joint provided between the cover plates. This joint substantially consists of a spherical convex joint part and, two matching joint shells connected with the cover plates, so that the cover plates can polyaxially pivot relative to one another.
SUMMARY OF THE INVENTION The described intervertebral implant allows pre-assembly of the parts in a state wherein they are locked relative to one another and can be unlocked in-situ. Further, advantages of the present invention are that the joint parts are connected with the cover plates, so that they cannot move and damage the surrounding tissue. And additionally by virtue of the design of the present invention lower manufacturing costs can be achieved.
DETAILED DESCRIPTION OF THE INVENTION The intervertebral implant 1 illustrated in FIGS. 1-3 substantially comprises a top part 3 with a top apposed surface 35 that intersects the central axis 2, to be placed on the base plate of the body of the adjacent vertebra located above, a bottom part 4 with a bottom apposed surface 45 that intersects the central axis 2, to be placed on the cover plate of the body of the adjacent vertebra located below, and a joint 9, provided between the two parts 3, 4, for the articulated joining of the two parts 3, 4. The joint 9 has a two-part construction comprising a convex joint part 12 and a joint shell 13. The convex joint part 12 has a spherical construction, a first articular surface 10 and is operatively associated with the bottom part 4. The joint shell 13, preferably has a second articular surface 11 matching the first articular surface 10 of the convex joint part 12, and is operatively associated with the top part 3. The top part 3 and the joint shell 13 preferably are made of two parts in the embodiment illustrated here, so that the top part 3 may be manufactured, for example, from titanium or a cobalt-chromium alloy and the joint shell 13, for example, from a plastic material although other suitable combinations of materials or a homogenous construction will be known to one of skill in the art.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS5314477Mar 4, 1991May 24, 1994J.B.S. Limited CompanyProsthesis for intervertebral discs and instruments for implanting itUS5556431Aug 9, 1994Sep 17, 1996B+E,Uml U+Ee Ttner-Janz; KarinIntervertebral disc endoprosthesisUS6517580 *Mar 9, 2000Feb 11, 2003Scient'x Societe A Responsabilite LimitedDisk prosthesis for cervical vertebraeUS7473276Dec 17, 2002Jan 6, 2009Synthes (U.S.A.)Intervertebral implant with joint parts mounted on roller bodiesUS20030176923 *Jan 13, 2003Sep 18, 2003Waldemar Link Gmbh & Co.Intervertebral prosthesisUS20040117022 *Dec 13, 2002Jun 17, 2004Theirry MarnayIntervertebral implant, insertion tool and method of inserting sameUS20040143332Oct 31, 2003Jul 22, 2004Krueger David J.Movable disc implantUS20060122703Dec 17, 2002Jun 8, 2006Max AebiIntervertebral implantFR2737656A1 Title not availableWO2004054475A1Dec 17, 2002Jul 1, 2004Max AebiIntervertebral implant with joint parts mounted on roller bodiesWO2004054478A1Dec 17, 2002Jul 1, 2004Max AebiIntervertebral implant* Cited by examinerNon-Patent CitationsReference1"First Notice of Reason for Rejection" issued by the Japanese Patent Office.2Chinese Office Action, issued on Mar. 13, 2009 for Chinese Patent Application No. 03826781.0.3International Preliminary Examination Report from the European Patent Office for PCT Application No. PCT/CH03/00496 dated Aug. 4, 2005.4International Search Report from the European Patent Office for PCT Application No. PCT/CH03/00496 dated Mar. 26, 2004 with translation.5Search Report from the European Patent Office for European Patent Application No. 03 739 938.3-2310 dated Oct. 30, 2007.6Translated International Preliminary Report dated Apr. 30, 2009.Referenced byCiting PatentFiling datePublication dateApplicantTitleUS7896919 *Oct 7, 2009Mar 1, 2011Zimmer Spine S.A.S.Method of implanting intervertebral disk prosthesisUS8192496 *Dec 22, 2009Jun 5, 2012Aesculap AgIntervertebral implant and handling instrument for this intervertebral implantUS8226721Feb 28, 2011Jul 24, 2012Zimmer Spine S.A.S.Method of implanting intervertebral disk prosthesisUS8366776 *Apr 13, 2006Feb 5, 2013Warsaw Orthopedic, Inc.Vertebral implants having predetermined angular correction and method of useUS20100179660 *Dec 22, 2009Jul 15, 2010Aesculap AgIntervertebral implant and handling instrument for this intervertebral implantUS20110054618 *Aug 22, 2006Mar 3, 2011Beat LechmannTotal disc replacement device* Cited by examinerClassifications U.S. Classification623/17.15, 623/17.16, 606/246, 623/17.11International ClassificationA61F2/30, A61F2/46, A61F2/44, A61F2/00Cooperative ClassificationA61F2220/0025, A61F2002/30166, A61F2002/4622, A61F2002/443, A61F2230/0028, A61F2310/00796, A61F2002/30485, A61F2002/30172, A61F2310/00748, A61F2220/0033, A61F2002/30879, A61F2002/30354, A61F2002/30649, A61F2002/30387, A61F2310/00029, A61F2002/30672, A61F2/4425, A61F2230/0052, A61F2310/00023, A61F2310/00574, A61F2002/30515, A61F2002/30843, A61F2002/30481, A61F2002/30685European ClassificationA61F2/44D2Legal 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