Source: http://www.google.de/patents/US7846182
Timestamp: 2013-05-23 10:04:29
Document Index: 288207357

Matched Legal Cases: ['Application No. 00810845', 'art 20', 'art 20', 'art 20', 'art 28', 'art 28']

Patent US7846182 - Pedicle screw for intervertebral support elements - Google PatenteSuche Bilder Maps Play YouTube News Gmail Drive Mehr » Erweiterte Patentsuche | Webprotokoll | Anmelden Erweiterte Patentsuche PatenteThe pedicle screw (1) for intervertebral support elements (3) consists of a shaft (10) and a head (2) comprising at least two parts (20, 22). The head is formed as a securing means for at least one support element (3). Each support element consists of a piece of a cable-like band (31) and a cylindrical...http://www.google.de/patents/US7846182?utm_source=gb-gplus-sharePatent US7846182 - Pedicle screw for intervertebral support elements Ver�ffentlichungsnummerUS7846182 B2PublikationstypErteilung Anmeldenummer12/128,764 Ver�ffentlichungsdatum7. Dez. 2010Eingetragen29. Mai 2008 Priorit�tsdatum18. Sept. 2000Auch ver�ffentlicht unterUS7611518US7758618US7785349US7967846US7985248US20020035366US20070123864US20080228229US20080228232US20080234734US20080243188US20110178554 ErfinderReto BraunschweilerReto WalderUrspr�nglich Bevollm�chtigterZimmer Gmbh US-Klassifikation606/246606/254606/86.00AInternationale KlassifikationA61B17/70A61B17/58 UnternehmensklassifikationA61B17/7032A61B17/704A61B17/7007A61B17/7037A61B17/7005A61B17/7004A61B17/7031 Europ�ische KlassifikationA61B17/70B5FA61B17/70B5BA61B17/70B2A61B17/70B1R12ReferenzenPatentzitate (53) Referenziert von (1)Externe LinksUSPTO USPTO-Zuordnung EspacenetPedicle screw for intervertebral support elementsUS 7846182 B2 Zusammenfassung The pedicle screw (1) for intervertebral support elements (3) consists of a shaft (10) and a head (2) comprising at least two parts (20, 22). The head is formed as a securing means for at least one support element (3). Each support element consists of a piece of a cable-like band (31) and a cylindrical support body (30) with an axial lumen (31″containing the band. The band is securable outside end surfaces (32) of the support body in the head. The head is formed with a contact surface (23) via which a pressure stress can be exerted on the support body in the band direction, and indeed using the band and in cooperation with a further pedicle screw. A part (20) of the head (2), which is firmly connected to the shaft (10) at the one end of the latter, contains a base groove (21) which is oriented transversally to the shaft and into which the part of the band (31) to be secured or a connecting piece (292) which contains the band can be introduced during the securing of the support element (3) by means of a translatory movement in the direction of the shaft and fixed there.
1. A dynamic stabilization system for a spinal column, the dynamic stabilization system comprising:
a first vertebral fastener configured to be secured to a first vertebra, the first vertebral fastener including a head defining a channel;
a second vertebral fastener configured to be secured to a second vertebra, the second vertebral fastener including a head defining a channel;
a support element having at least a portion positionable between the head of the first vertebral fastener and the head of the second vertebral fastener, the support element including a spacer having a bore extending therethrough and a flexible member sized to insert into the bore of the spacer;
a first member having a bore extending therein sized to receive the flexible member, the first member including a first portion positionable between the spacer of the support element and a first side of the head of the first vertebral fastener, a second portion positionable within the channel of the first vertebral fastener, and a third portion positionable on a second side of the head of the first vertebral fastener opposite the first side of the first vertebral fastener; and
a second member having a bore extending therein sized to receive the flexible member, the second member including a first portion positionable between the spacer of the support element and a first side of the head of the second vertebral fastener, a second portion positionable within the channel of the second vertebral fastener, and a third portion positionable on a second side of the head of the second vertebral fastener opposite the first side of the second vertebral fastener;
wherein the first member is configured to space the support element from direct contact with the head of the first vertebral fastener and the second member is configured to space the support element from direct contact with the head of the second vertebral fastener.
2. The dynamic stabilization system of claim 1, wherein the first member is securable to the head of the first vertebral fastener with one or more threaded screws.
3. The dynamic stabilization system of claim 2, wherein the second member is securable to the head of the second vertebral fastener with one or more threaded screws.
4. The dynamic stabilization system of claim 1, wherein the bore of the first member extends therethrough, wherein the flexible member is positionable through the bore of the first member.
5. The dynamic stabilization system of claim 4, wherein the bore of the second member extends therethrough, wherein the flexible member is positionable through the bore of the second member.
6. The dynamic stabilization system of claim 1, wherein the first member is a connector.
7. The dynamic stabilization system of claim 6, wherein the second member is a connector.
8. The dynamic stabilization system of claim 1, wherein the first member has a longitudinal axis and the second portion of the first member is positionable in the channel of the first vertebral fastener by translation of the first member in a direction generally transverse to the longitudinal axis of the first member.
9. The dynamic stabilization system of claim 8, wherein the second member has a longitudinal axis and the second portion of the second member is positionable in the channel of the second vertebral fastener by translation of the second member in a direction generally transverse to the longitudinal axis of the second member.
10. The dynamic stabilization system of claim 1, wherein the first vertebral fastener includes a threaded shaft portion having a longitudinal axis; and
wherein the second portion of the first member is positionable in the channel of the first vertebral fastener by translation of the first member in a direction generally parallel to the longitudinal axis of the threaded shaft portion of the first vertebral fastener.
11. The dynamic stabilization system of claim 10, wherein the second vertebral fastener includes a threaded shaft portion having a longitudinal axis; and
wherein the second portion of the second member is positionable in the channel of the second vertebral fastener by translation of the second member in a direction generally parallel to the longitudinal axis of the threaded shaft portion of the second vertebral fastener.
12. The dynamic stabilization system of claim 1, wherein a first end of the spacer is positionable in abutment with a surface of the first member.
13. The dynamic stabilization system of claim 12, wherein a second end of the spacer is positionable in abutment with a surface of the second member. Beschreibung
CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of U.S. application Ser. No. 11/565,825, filed on Dec. 1, 2006; which is a continuation of U.S. application Ser. No. 09/956,055, filed on Sep. 18, 2001; which claims priority to European Patent Application No. 00810845.8, filed on Sep. 18, 2000, which are all incorporated herein by reference.
BACKGROUND Invasive treatment methods are known for the stabilization of spinal columns in which bone bridges are made to grow between adjacent vertebral bodies using implants.
Stiffening fusions of the adjacent vertebrae result through the bone bridges. In addition to stiffening operations of this kind a treatment method for stabilizing by means of an implant system is also known in which no fusion arises, but rather a mobility is preserved between adjacent vertebrae. This implant system comprises pedicle screws and intervertebral support elements which are implanted during the operation from the back. Each pedicle screw has a head which is formed as a ring. In each case two pedicle screws are screwed in in a vertebral body through the pedicle passages of the vertebra. The support elements are secured at the screw heads. Two support elements which are arranged in parallel between adjacent vertebrae form a dynamic supporting of these vertebrae. The vertebrae�with the exception of the lowermost lumbar vertebra�can in each case also be connected at the same pedicle screws to an upwardly and a downwardly adjacent vertebra through two pairs of support elements.
Each support element consists of a piece of a cable-like band and a cylindrical support body which is elastically yielding. A rigid material can also be used for individual support bodies in order to stiffen the spinal column at individual locations. The band is drawn in in an axial lumen of the support body. The intervertebral support elements are secured at the pedicle screws using the band. In this the bands must be drawn through through the ring heads. The drawing in of the band is an operation step which is difficult to carry out.
SUMMARY The object of the present invention is to create, for dynamic vertebra spporting, a pedicle screw for intervertebral support elements for which the securing of the support element at the pedicle screw, which must take place during the surgical operation, can be carried out more easily.
FIG. 11 shows a further embodiment of the head 2 with a connector 29. The band 31 can be secured in the connector 29 in a bore 293. During the operation the connector 29, which contains the band 31, is placed onto the core part 20 of the head 2, with a connecting piece 292 of the connector 29, which has a prismatic shape, being laid in into the corresponding complementarily shaped groove 21. The securing between the connector 29 and the core part 20 can be produced for example with two screws. The non-illustrated screws are inserted through bores 291 a of the connector 29 and are screwed tight in threaded bores 29 lb of the core part 20.
The embodiments in accordance with FIGS. 6 and 10 permit a so-called �polyaxiality� in the fixing of the support body 30 at the pedicle screws 1. The �polyaxiality� relates to the axis of the shaft 2; in all other body 30, which is given by the axis of their lumens 3 1′. The term �polyaxiality� is intended to mean that the angle between the two axis directions is not fixed in advance, but can vary within a certain angular range. This will be explained for the embodiment in accordance with FIG. 10 in more detail with reference to FIG. 12: FIG. 12 shows a cross-sectional illustration of the pedicle screw head 20 with the sleeve part 28, the inner surface 280 of which is a partial region of a spherical surface. The head 20 is made correspondingly spherical, so that it can be laid in into the sleeve part 28 in different positions. The axis of the shaft 10 has a main direction z perpendicular to the direction x of the support body 30 (x is perpendicular to the plane of the drawing). The shaft axis can deviate with respect to this main direction z by an angle (.phi. This angle .phi. has a maximum value .phi.sub.max which amounts to 10.degree. or even more, but which is less than 15.degree. The angle .phi. can vary in the region of a cone about the main direction z, with the half opening angle of this cone amounting to phi.sub.max. Corresponding remarks also hold for the embodiment in accordance with FIG. 6. The system for the vertebral support which can be produced with the pedicle screws in accordance with FIGS. 6 and 10 is easier to implant thanks to the �polyaxiality�.
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Okt. 2011Globus Medical, Inc.System and method for replacement of spinal motion segmentDrehenOriginalbildGoogle-Startseite - Sitemap - USPTO-Bulk-Downloads - Datenschutzerkl�rung - Nutzungsbedingungen - �ber Google Patente - Feedback gebenDaten bereitgestellt von IFI CLAIMS Patent Services.© 2012 Google