Source: http://www.google.com/patents/US20100094348?ie=ISO-8859-1&dq=6008737
Timestamp: 2014-10-23 04:08:21
Document Index: 367688037

Matched Legal Cases: ['art.\n6', 'art.\n9', 'art.\n10', 'art. 26', 'art.\n27', 'art.\n28']

Patent US20100094348 - Bone anchoring element and stabilization device for bones, in particular for ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA bone anchoring element includes an anchoring section for anchoring in the bone and a receiving part connected to the anchoring section. The receiving part includes an opening suitable for accommodation of a stabilization rod having a rod axis, the opening being limited along the rod axis by two side...http://www.google.com/patents/US20100094348?utm_source=gb-gplus-sharePatent US20100094348 - Bone anchoring element and stabilization device for bones, in particular for the spinal columnAdvanced Patent SearchPublication numberUS20100094348 A1Publication typeApplicationApplication numberUS 12/550,654Publication dateApr 15, 2010Filing dateAug 31, 2009Priority dateSep 5, 2008Also published asCN101664335A, CN101664335B, EP2160989A1, EP2160989B1, EP2484300A1Publication number12550654, 550654, US 2010/0094348 A1, US 2010/094348 A1, US 20100094348 A1, US 20100094348A1, US 2010094348 A1, US 2010094348A1, US-A1-20100094348, US-A1-2010094348, US2010/0094348A1, US2010/094348A1, US20100094348 A1, US20100094348A1, US2010094348 A1, US2010094348A1InventorsLutz Biedermann, J�rgen Harms, Helmar Rapp, Berthold DanneckerOriginal AssigneeLutz Biedermann, Harms Juergen, Helmar Rapp, Berthold DanneckerExport CitationBiBTeX, EndNote, RefManPatent Citations (20), Referenced by (4), Classifications (13), Legal Events (2) External Links: USPTO, USPTO Assignment, EspacenetBone anchoring element and stabilization device for bones, in particular for the spinal columnUS 20100094348 A1Abstract A bone anchoring element includes an anchoring section for anchoring in the bone and a receiving part connected to the anchoring section. The receiving part includes an opening suitable for accommodation of a stabilization rod having a rod axis, the opening being limited along the rod axis by two side walls. The side walls include guides orientated along the rod axis for guiding at least one connection rod therethrough.
an anchoring section for anchoring to a bone and a receiving part connected to the anchoring section, the receiving part comprising two legs defining a generally U-shaped channel having a longitudinal axis, the channel extending from free ends of the legs defining an opening of the receiving part to second ends of the legs wherein the legs are joined to define a seat configured to receive a stabilization rod extending along the longitudinal axis of the channel, at least a portion of each leg at the free end having a thread, each leg having a first side and a second side opposite to the first side along the longitudinal axis; a threaded locking element configured to engage the threads of the legs; wherein each leg defines a recess or a bore generally oriented along the longitudinal axis and extending through the leg for guiding a connection rod from the first side of the leg to the second side of the leg; and wherein each of the recesses or bores is located in a corresponding leg at a location along the leg from the seat to the free end of the leg. 2. The bone anchoring element of claim 1, wherein the recesses or bores are configured as through-holes extending completely through the legs generally in the direction of the longitudinal axis.
3. The bone anchoring element of claim 1, further comprising a securing structure configured to prevent removal of the connection rod from the recesses or bores when the connection rod is guided in the recesses or bores.
4. The bone anchoring element of claim 1, wherein the recesses are open to the channel.
5. The bone anchoring element of claim 1, wherein the recesses are open to an exterior of the receiving part.
6. The bone anchoring element of claim 1, wherein the recesses are provided on an outer side of the legs and are integrally formed in the legs.
7. The bone anchoring element of claim 1, wherein the recesses or bores are provided on a separate part mounted on an outer side of the legs.
8. The bone anchoring element of claim 1, wherein the recesses or bores are smaller than the opening of the receiving part.
9. The bone anchoring element of claim 1, wherein the anchoring section is pivotably connected to the receiving part.
10. The bone anchoring element of claim 9, wherein the anchoring section and the receiving part form a polyaxial bone screw.
11. A stabilization device for bones or a spinal column, comprising:
a stabilization rod; at least one connection rod; at least two bone anchoring element, each bone anchoring element comprising:
an anchoring section for anchoring in the bone and a receiving part connected to the anchoring section, the receiving part comprising two legs defining a generally U-shaped channel having a longitudinal axis, the channel extending from free ends of the legs defining an opening of the receiving part to second ends of the legs wherein the legs are joined to define a seat configured to receive the stabilization rod extending along the longitudinal axis of the channel; each leg having a first side and a second side opposite to the first side along the longitudinal axis
wherein each leg defines a recess or a bore generally oriented along the longitudinal axis and extending through the leg from the first side of the leg to the second side of the leg; and wherein the stabilization rod is received in the channels of the bone anchoring elements to connect the bone anchoring elements; and wherein the at least one connection rod is guided through the recess or bore of one of the legs of each of the bone anchoring elements. 12. The stabilization device of claim 11, wherein two connection rods are provided, which are connectable to each other at one of their ends.
13. The stabilization device of claim 11, wherein each bone anchoring element comprises a locking element configured to engage the legs and is moveable between an unlocked position wherein the stabilization rod is freely movable in the channel and a locked position wherein the stabilization rod is fixed in the channel with the locking element, and wherein the connection rod is freely moveable in the recesses or bores in the unlocked and the locked positions of the locking element.
14. The stabilization device of claim 11, wherein the at least one connection rod is more rigid than the stabilization rod.
15. The stabilization device of claim 11, wherein each of the recesses or bores is located in a corresponding leg at a location along the leg from the seat to the free end of the leg.
16. The stabilization device of claim 11, wherein the stabilization rod is a flexible rod.
17. The stabilization device of claim 11, wherein a diameter of the connection rod is smaller than a diameter of the stabilization rod.
18. The stabilization device of claim 11, wherein the at least two bone anchoring devices comprise polyaxial bone screws, and wherein the at least one connection rod aligns the receiving parts of the polyaxial bone screws when the at least one connection rod is guided in the recesses or bores of the bone anchoring elements.
19. A stabilization system for a spinal column comprising:
a stabilization rod; two connection rods; at least two bone anchoring elements, each bone anchoring element comprising:
wherein each leg defines a recess or a bore generally oriented along the longitudinal axis and extending through the leg from the first side of the leg to the second side of the leg;
wherein the at least two bone anchoring elements are connected with the stabilization rod being received in the channel of each bone anchoring element wherein each connection rod is received and extends through the recess or bore of one of the legs of each bone anchoring element; and wherein the connection rods are entirely spaced apart in the bone anchoring elements. 20. The stabilization system of claim 19, wherein each of the recesses or bores is located in a corresponding leg at a location along the leg from the seat to the free end of the leg.
21. The stabilization system of claim 19, wherein the connection rods are more rigid than the stabilization rod.
22. The stabilization system of claim 19, wherein the stabilization rod is flexible.
23. The stabilization system of claim 19, wherein a diameter of the stabilization rod is greater than a diameter of the connection rods.
24. The stabilization device of claim 19, wherein each bone anchoring element comprises a locking element configured to engage the legs and is moveable between an unlocked position wherein the stabilization rod is freely movable in the channel and a locked position wherein the stabilization rod is fixed in the channel with the locking element, and wherein the connection rods are freely moveable in the recesses or bores in the unlocked and the locked positions of the locking element.
25. A method of attached a stabilization device to bone or vertebra, the stabilization device comprising a stabilization rod, two connection rods, at least two bone anchoring elements, each bone anchoring element comprising an anchoring section for anchoring in the bone and a receiving part connected to the anchoring section, the receiving part comprising two legs defining a generally U-shaped channel having a longitudinal axis, the channel extending from free ends of the legs defining an opening of the receiving part to second ends of the legs, each leg having a first side and a second side opposite to the first side along the longitudinal axis, wherein each leg defines a recess or a bore generally oriented along the longitudinal axis and extending through the leg from the first side of the leg to the second side of the leg, the method comprising:
anchoring the anchoring sections of the bone anchoring elements to bone or vertebra; inserting the stabilization rod in the channel of each receiving part; and guiding the connection rods through the recesses or bores of the legs of each receiving part. 26. The method of claim 25, wherein the stabilization rod is inserted in the channel of each receiving part before guiding the connection rods through the recesses or bores of the legs of each receiving part.
27. The method of claim 25, wherein the connection rods are guided through the recesses or bores of the legs of each receiving part before inserting the stabilization rod in the channel of each receiving part.
28. The method of claim 25, further comprising moving a locking element of each bone anchoring element between a unlocked position wherein the stabilization rod is freely movable in the channel of each receiving part and a locked position wherein the stabilization rod is fixed in the channel of each receiving part, and wherein the connection rods are freely moveable in the recesses or bores in the unlocked and the locked positions of the locking element Description
CROSS-REFERENCE TO RELATED APPLICATION(S) The present application claims the benefit of U.S. Provisional Patent Application Ser. No. 61/094,664, filed Sep. 5, 2008, the contents of which are hereby incorporated by reference in their entirety, and claims priority from European Patent Application EP 08 015 721.7, filed Sep. 5, 2008, the contents of which are hereby incorporated by reference in their entirety.
BACKGROUND The present application relates to a bone anchoring element and to a stabilization device for bones, in particular for the spinal column, including such a bone anchoring element.
SUMMARY A disclosed bone anchoring element includes a receiving part having a U-shaped recess forming a channel in which a stabilizing rod can be inserted and additionally includes lateral guides for accommodating connection rods with a smaller diameter. A disclosed stabilization device includes at least two such bone anchoring elements and at least one connection rod. The bone anchoring element is preferably a polyaxial bone screw.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a side view of the stabilization device according to a first embodiment.
DETAILED DESCRIPTION As shown in FIGS. 1 to 5 the bone stabilization device 1 according to a first embodiment includes a flexible rod 2 and at least one laterally arranged connection rod 3 which are both connected to bone anchoring elements 4, 4′.
In the wall of each of the free legs 46 a, 46 b bores 47 a, 47 b are provided and which form guides for the connection rods. The bores 47 a, 47 b extend through the free legs 46 a, 46 so that the connection rods 3 can be guided through the bores from one side of the receiving part and exit through the other side. The size of the bores is such that the diameter is slightly larger than the outer diameter of the connection rods 3 to allow a sliding movement of the connection rods 3 within the bores 47 a, 47 b. In the embodiment shown in FIG. 2 the bores 47 a, 47 b are located fully within the free legs 46 a and 46 b and form through holes. The location of the through holes 47 a, 47 b is such that the bore axis is in one plane with the axis of the flexible rod 2 when the flexible rod 2 is inserted.
FIG. 3 shows a bone anchoring element 4′ which is a modification of the bone anchoring element which is suitable for accommodating the portion 3 c of the connection rods shown in FIG. 4. It differs from the bone anchoring element according to FIG. 2 in the construction of the bores 47 a′, 47W. All other elements of the bone anchoring element are the same as those of the bone anchoring element of FIG. 2 and the description thereof will not be repeated. The bores 47 a′, 47 b′ have a semi-circular cross section. The bores are open to the channel which accommodates the flexible rod 2. The connection rods 3 are secured from inside the receiving part by the flexible rod 2 against falling out from the bores 47 a′, 47 b′. With this embodiment, it is possible to arrange the connection rods 3 more closely to the flexible rod 2 and the connection rods can be put in place through the U-shaped channel. As particularly shown in FIGS. 1 and 4, with this construction it is possible to span several motion segments of the spinal column with different distances of the flexible rod 2 and the connection rods 3 from each other.
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