Source: http://www.google.fr/patents/US20060036326
Timestamp: 2013-05-19 08:23:12
Document Index: 546856621

Matched Legal Cases: ['art 2', 'arts 2', 'art 2', 'arts 2', 'art 2', 'art 3', 'art 2', 'art 2', 'arts 2', 'art 2', 'art 3', 'art 2', 'art 2', 'art 2', 'art 2', 'arts 2', 'art 2', 'arts 2', 'art 2', 'art 3', 'art 2', 'art 3', 'art 2', 'art 2', 'art 2', 'art 2']

Brevet US20060036326 - Intervertebral implant comprising a three-part articulation - Google�BrevetsRecherche Images Maps Play YouTube Actualit�s Gmail Drive Plus » Recherche avanc�e dans les brevets | Historique Web | Connexion Recherche avanc�e dans les brevets BrevetsAn intervertebral implant having a central axis (1) substantially parallel to or coaxial with the spinal column's longitudinal axis and including: an upper and a lower terminal part (2; 3) and a convex joint element. Each of the upper and lower terminal parts have an outermost surface (5; 6) configured...http://www.google.fr/patents/US20060036326?utm_source=gb-gplus-shareBrevet US20060036326 - Intervertebral implant comprising a three-part articulation Num�ro de publicationUS20060036326 A1Type de publicationDemande Num�ro de demande10/526,293 Date de publication16 f�vr. 2006 Date de d�p�t2 sept. 2002 Date de priorit�2 sept. 2002Autre r�f�rence de publicationCN1665459ACN100548239CEP1534193A1EP1534193B1US7597713WO2004019828A1 Num�ro de publicationUS 2006/0036326 A1US2006/0036326A1 InventeursDaniel BaumgartnerAdrian BurriClaude Mathieu Cessionnaire d'origineMathys Medizinaltechnik Ag Classification aux �tats-Unis623/17.15 Classification internationaleA61F2/44A61F2/00A61F2/30 Classification coop�rativeA61F2220/0033A61F2002/30604A61F2220/0025A61F2002/30364A61F2002/443A61F2310/00023A61F2002/30563A61F2/30907A61F2/4425A61F2002/30393 Classification europ�enneA61F2/44D2R�f�rences R�f�renc� par (8)Liens externesUSPTO Cession USPTO EspacenetIntervertebral implant comprising a three-part articulationUS 20060036326 A1 R�sum� An intervertebral implant having a central axis (1) substantially parallel to or coaxial with the spinal column's longitudinal axis and including: an upper and a lower terminal part (2; 3) and a convex joint element. Each of the upper and lower terminal parts have an outermost surface (5; 6) configured transversely to the central axis (1,). Each of the terminal parts come to rest against the end surfaces of two adjacent vertebras and opposite first and second concave inner surface (7;8), respectively. The convex joint element (4) is situated between the terminal parts (2; 3) and rests in a sliding manner against the first and second concave inner surfaces (7; 8) of the two terminal parts (2; 3). The, first concave surface (7) is a partial surface of a first rotationally symmetrical external surface (11) about the axis of rotation (12) transverse to the central axis (1). The second concave inner surface (8) of a second rotationally symmetrical conical external surface (16) about the axis of rotation (14) transverse to the central axis (1). Dessins(6) Revendications
FIG. 1 shows an embodiment mode of the intervertebral implant of the invention comprising an upper and a lower terminal part 2; 3 intersecting the central axis 1 and furthermore a joint element 4 which is situated between the terminal parts 2; 3 and which also intersects the central axis 1. Each terminal part 2; 3 comprises an outermost surface 5; 6 matched to the end plates of the adjoining vertebras and running transversely to the central axis 1, each of said outermost surfaces being displaceable in a manner to come to rest against one of the mutually end surfaces of two adjacent vertebras. The mutually opposite two terminal parts 2; 3 each comprise one concave inner surface 7; 8 whereas the joint element 4 comprises two convex slide surfaces 9; 10 of which the slide surface 9 is complementary to the concave inner surface 7 of the upper terminal part 2 and the other convex slide surface 10 is complementary to the concave inner surface 8 of the lower terminal part 3. The first concave inner surface 7 and the first slide surface 9 complementary thereto constitute the slide surfaces of a first joint rotatable about the first axis of rotation 12 between the joint element 4 and the upper terminal part 2. When the joint element 4 is in its initial position, that is, when it was not rotated about the second axis of rotation 14, the first axis of rotation 12 will be perpendicular to the central axis 1. Rotation of the upper terminal part 2 about the first axis of rotation 12 entails a bending or stretching displacement of the vertebras adjoining the terminal parts 2; 3. The first concave inner surface 7 at the upper terminal part 2 and its complementary first slide surface 9 at the joint element 4 are designed in the embodiment mode presently being discussed of the intervertebral implant of the invention as partial surfaces of a circularly cylindrical outermost surface rotationally symmetrical to the axis of rotation 12. The second concave inner surface 8 and its complementary second slide surface 10 constitute the slide surfaces of a second joint rotatable about a second axis of rotation 14 and situated between the joint element 4 and the lower terminal part 3. This second axis of rotation 14 intersects the central axis 1 at an angle a but does not intersect the axis of rotation 12. As shown in FIG. 2, the second axis of rotation 14 is situated in a plane 17 containing the central axis 1 and is traversed by the first axis of rotation 12. Accordingly rotating the joint element 4 together with the upper terminal part 2 about the second axis of rotation 14 allows laterally bending the two vertebras adjoining the intervertebral implant. FIG. 2 also shows that the external surface 11 rotationally symmetrical about the first axis of rotation 12 is a circularly cylindrical external surface of which the first slide surface 9 constitutes a surface patch. The second slide surface 10 is a surface patch of a second circularly cylindrical external surface 16 which is rotationally symmetrical with respect to the second axis of rotation 14. Moreover the two axes of rotation are a distance A apart. As shown in FIG. 2, as the joint element 4 is rotated about the second axis of rotation, the first axis of rotation 12 moves along an arc 13 of radius A relative to and concentrically with the point of intersection 15 between the central axis 1 and the second axis of rotation 14. FIG. 3 shows an embodiment mode of the intervertebral implant of the invention that differs from that of FIG. 1 in that the upper terminal part 2 consists of three elements. The upper terminal part 2 comprises in axially outermost manner the upper cover plate 24 containing the outermost surface 5, further a joint pan 26 pointing toward the joint element 4 and an elastically deforming spacer 25 between the joint pan 26 and the cover plate 24. The intervertebral implant moreover comprises a front side 19 pointing toward the cone tip 18, and oppositely a rear side 20. The intervertebral implant is designed in a manner that following implantation, the front side 19 shall be positioned to the rear of the intervertebral space. As a result the second axis of rotation 14 runs from the front to the rear. The rotation of the upper terminal part 2 about the first axis of rotation 12 (FIG. 1) perpendicular to the plane of the Figure is limited by the two stops 21; 22. The first stop 21�which serves to limit a rotation of the two terminal parts 2; 3 relative to each other shortening the front side 19 parallel to the central axis 4 and hence restricting the stretching displacement of the two adjoining vertebras�is mounted at the front side 19 on the upper terminal part 2, whereas the second stop 22 serves to restrict a rotation of the two terminal parts 2; 3 relative to each other, shortening the rear side 20 parallel to the central axis 1, restricting the stetching displacement of the two adjoining vertebras. The first and second stops 21; 22 are constituted by the lower ends 32; 33 respectively situated on the front side 19 and rear side 20 of the upper terminal part 2 that rest against the inner surface 31 facing the joint element 4, of the lower terminal part 3, after the maximum admissible angle of rotation has been reached. FIG. 4 shows that the lower end 33 is rounded off at the rear side 20 (Fig. 3), the center of this rounded segment coinciding with the intersection between the second axis of rotation 14 (FIG. 3) and the rear side 20 of the intervertebral implant, as a result of which the first stop 22�when the upper terminal part 2 is rotated about the second axis of rotation 14 (FIG. 3)�shall come to rest at the same angle of rotation about the first axis of rotation 12 against the inner surface 31 of the base plate 30 of the lower terminal part 3. Furthermore the second slide surface 10 (FIG. 1) is offset at the rear side 20 of the intervertebral implant over part of its periphery and part of its length. The second concave inner surface 8 is similarly offset. The stop 23 ensuing from this offset limits the angle of rotation of the upper terminal part 2 about the second axis of rotation 14, as a result of which the lateral bending of the two vertebras adjoining the intervertebral implant shall be restricted. The stops 21; 22; 23 are designed in a manner to allow bending the adjacent vertebras through an angle β of 10�, stretching by an angle γ=5� and lateral bending by an angle of δ=�7�. The embodiment mode of the intervertebral implant shown in FIG. 5 differs from the embodiment modes of FIGS. 1, 3 or 4 only in that grids 27 are present externally on the cover plate 24 and also on the base plate 30 and in that the first convex slide surface 9 comprises an elevation 28 concentric with the first axis of rotation 12 and that the first concave inner surface 7 contains a recess 29, the elevation 28 being tangentially displaced in the recess 29 when the upper terminal part 2 is rotated relative to the joint element 4. The elevation 28 runs parallel to the first axis of rotation 12 only over a portion of the first slide surface 9 whereas the peripheral extension of the elevation 28 runs over the entire first slide surface 9. The recess 29 in the first concave inner surface 29 is complementary to the said elevation. Other embodiment modes of the intervertebral implant of the invention also allow elevations 28 which are peripherally present only over a portion of the first slide surface 9. The elevation 28 engaging the recess 29 offers the advantages that on one hand lateral stabilization between the first terminal part 2 and the joint element 4 is feasible, shearing motion of the adjoining vertebras parallel to the first axis of rotation 12 being precluded, and on the other hand that it is possible to center the joint element 4 within the intervertebral implant, as a result of which the joint element 4 cannot be displaced parallel to the first axis of rotation relative to the first terminal part 2. Preferably the grids 27 are titanium grids that also may be curved so that optimal growth of the adjoining vertebras onto the intervertebral implant shall be possible. R�f�renc� par Brevet citant Date de d�p�t Date de publication D�posant TitreUS719864429 juin 20043 avr. 2007Aesculap Ag & Co. KgIntervertebral implantUS727349614 oct. 200325 sept. 2007St. Francis Medical Technologies, Inc.Artificial vertebral disk replacement implant with crossbar spacer and methodUS74818402 nov. 200427 janv. 2009Kyphon SarlMulti-piece artificial spinal disk replacement device with selectably positioning articulating elementUS761153812 d�c. 20033 nov. 2009Zimmer Spine S.A.S.Intervertebral disk prosthesisUS781132512 ao�t 200812 oct. 2010Synthes Usa, LlcIntervertebral implant component with three points of contactUS78969197 oct. 20091 mars 2011Zimmer Spine S.A.S.Method of implanting intervertebral disk prosthesisUS804337921 avr. 200625 oct. 2011Depuy Spine, Inc.Disc prosthesis having remote flexion/extension center of rotationUS822672128 f�vr. 201124 juil. 2012Zimmer Spine S.A.S.Method of implanting intervertebral disk prosthesisFaire pivoterImage d'origineAccueil Google - Plan du site - T�l�chargements par lot sur l'USPTO - R�gles de confidentialit� - Conditions d'utilisation - � propos de Google�Brevets - Envoyer des commentairesDonn�es fournies par IFI CLAIMS Patent Services©2012 Google