Source: https://patents.google.com/patent/US20120283789A1/en
Timestamp: 2019-04-25 01:24:59
Document Index: 7565706

Matched Legal Cases: ['art 5', 'art 5', 'art 5', 'art 801', 'art 5', 'art 5', 'art.\n17']

US20120283789A1 - Bone anchoring device - Google Patents
US20120283789A1
US20120283789A1 US13/466,773 US201213466773A US2012283789A1 US 20120283789 A1 US20120283789 A1 US 20120283789A1 US 201213466773 A US201213466773 A US 201213466773A US 2012283789 A1 US2012283789 A1 US 2012283789A1
US13/466,773
US8940024B2 (en
2007-07-31 Priority to US95317007P priority Critical
2007-07-31 Priority to EP07015041 priority
2007-07-31 Priority to EP07015041A priority patent/EP2022423B1/en
2007-07-31 Priority to EPEP07015041.2 priority
2008-07-31 Priority to US12/183,932 priority patent/US8192470B2/en
2012-05-08 Priority to US13/466,773 priority patent/US8940024B2/en
2012-05-08 Application filed by Biedermann Motech GmbH and Co KG filed Critical Biedermann Motech GmbH and Co KG
2012-11-08 Publication of US20120283789A1 publication Critical patent/US20120283789A1/en
2015-01-27 Publication of US8940024B2 publication Critical patent/US8940024B2/en
2015-07-23 Assigned to BIEDERMANN MOTECH GMBH reassignment BIEDERMANN MOTECH GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BIEDERMANN, LUTZ, DANNECKER, BERTHOLD, MATTHIS, WILFRIED
2015-07-23 Assigned to BIEDERMANN TECHNOLOGIES GMBH & CO. KG reassignment BIEDERMANN TECHNOLOGIES GMBH & CO. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BIEDERMANN MOTECH GMBH & CO. KG
2015-07-23 Assigned to BIEDERMANN MOTECH GMBH & CO. KG reassignment BIEDERMANN MOTECH GMBH & CO. KG CHANGE OF LEGAL FORM Assignors: BIEDERMANN MOTECH GMBH
A bone anchoring device includes a bone anchoring element having a shaft and a head; and a receiving part for coupling a rod to the bone anchoring element. The receiving part includes a first portion with a U-shaped recess for receiving the rod, and a second portion for accommodating the head, the second portion having a free end and being flexible so as to allow introduction and clamping of the head. The bone anchoring device also includes a locking ring embracing the second portion. The head is locked by means of exerting pressure with the rod onto the locking ring resulting in compression of the second portion of the receiving part and wherein the locking ring is mounted to the receiving part from the free end of the second portion.
This application is a continuation of allowed U.S. patent application Ser. No. 12/183,932, filed Jul. 31, 2008, which claims the benefit of U.S. Provisional Patent Application Ser. No. 60/953,170, filed Jul. 31, 2007, the contents of which are hereby incorporated by reference in their entirety, and claims priority from European Patent Application EP 07 015 041.2, filed Jul. 31, 2007, the contents of which are hereby incorporated by reference in their entirety.
FIG. 8 shows a side view of the receiving part of FIG. 7 rotated by 90°.
Adjacent to the second end 9 b the receiving part 5 includes a second portion 16 providing an accommodation space for the head 3 of the bone anchoring element 1. The second portion 16 has a conically-shaped outer surface including a cone angle α which tapers towards the second end 9 b and which has a free end 17 opposite to the second end 9 b. As can be seen in particular in FIG. 4, the outer diameter of the first portion 9 at its second end 9 b is larger than the outer diameter of the second portion 16 adjacent to the second end 9 b and also larger than the outer diameter of the second portion at its free end 17. Hence, the second portion 16 is recessed with respect to the first portion 9. The second portion 16 has an internal hollow spherical section 18 forming a seat for the spherical segment-shaped head 3 of the bone anchoring element 1. The hollow spherical section 18 is dimensioned in such a way that it encompasses the head 3 of the bone anchoring element from the side covering a region including the largest diameter of the head 3. As can be seen in FIGS. 1, 6, 9 and 10 cuts 24 are provided in the first portion on either end of the channel formed by the recess 12.
The bone anchoring device can be used in several ways. In one way of use the bone anchoring element, the receiving part and the locking ring are preassembled. The bone anchoring element is screwed into the bone with the receiving part mounted to the anchoring element. The recess 4 of the head can be accessed with a screwing-in tool through the first bore 10. The locking ring 8 is in its first position close to the second end 9 b where does not clamp the head 3. In this state, the head 3 is pivotably held in the second portion 16 which allows the receiving part 5 to be aligned to receive the rod. Once the correct position of the rod with respect to other bone anchoring devices is achieved, the inner screw 7 is screwed between the legs until it presses onto the rod. The rod is pressed against the bottom of the U-shaped recess thereby engaging the free ends 22 of the projections 21, respectively, and shifting down the locking ring 8.
FIG. 19 shows a further embodiment which differs from the embodiment according to FIG. 1 in the design of the locking ring 800. The receiving part 5 is identical to one of the previously described receiving parts and the description thereof will not be repeated. The locking ring 800 has a lower part 801 which is designed like the locking ring 8 of, for example, FIGS. 11 to 13 and includes two projections 21 which are offset by 180°. Furthermore, the locking ring 800 includes an annular edge 802 the inner diameter of which is larger than the outer diameter of the first portion 9 of the receiving part 5. The height of the annular edge 802 can be as large as the height of the projection 21. However, the annular edge 802 can have a height larger than the projection 21. The thickness of the annular edge 802 is small, so that the overall diameter of the receiving part 5 is not substantially increased.
a bone anchoring element having a shaft for anchoring in the bone and a head;
a first portion with a first end and a second end and a U-shaped recess for receiving the rod, the recess extending from the first end in the direction of the second end thereby forming two free legs; and
a second portion at the side of the second end opposite to the first end for accommodating the head, the second portion having a free end and being flexible so as to allow introduction and clamping of the head;
a locking ring embracing the second portion; and
wherein the head is locked by exerting pressure with the rod onto the locking ring resulting in compression of the second portion of the receiving part and wherein the locking ring is mounted to the receiving part from the free end of the second portion.
2. The bone anchoring device according to claim 1, wherein the diameter of the second portion of the receiving part adjacent to the second end is smaller than the diameter of the first portion at the second end.
3. The bone anchoring device according to claim 1, wherein the locking ring is movable along the second portion between a first position limited by the second end of the first portion and a second position limited by the free end of the second portion when the head is not clamped.
5. The bone anchoring device according to claim 1, wherein the second portion of the receiving part has a conical outer surface tapering toward the second end.
8. The bone anchoring device according to claim 1, wherein the locking ring comprises two projections offset by 180° which project into the U-shaped recess when the head is not clamped.
9. The bone anchoring device according to claim 1, wherein the second portion comprises a plurality of slits being open to the free end.
10. The bone anchoring device according to claim 1, wherein the first portion comprises a plurality of slits extending from a distance of the first end to the second end.
11. The bone anchoring device according to claim 1, wherein the head is spherical segment-shaped and the second portion comprises an inner surface with a corresponding spherical portion to allow a pivotal movement of the head.
12. The bone anchoring device according to claim 1, wherein the head is cylindrically-shaped and the second portion comprises an inner surface with a corresponding cylindrical portion to restrict the movement of the head to a rotational movement about a single axis.
13. The bone anchoring device according to claim 1, wherein a closure element, preferably a set screw, is provided for securing the rod in the recess.
14. The bone anchoring device according to claim 1, wherein a plane going through the free end of the second portion includes an angle with the first end.
15. The bone anchoring device according to claim 1, wherein the locking ring has a structure preventing it from escaping through the free end when the head is not yet inserted into the second portion.
16. A method of attaching a bone anchoring device to a bone or vertebrae, the bone anchoring device comprising a bone anchoring element having a shaft for anchoring in the bone and a head, a receiving part for coupling a rod to the bone anchoring element, wherein the receiving part comprises a first portion with a first end and a second end and a U-shaped recess for receiving the rod, the recess extending from the first end in the direction of the second end thereby forming two free legs, and a second portion at the side of the second end opposite to the first end for accommodating the head, the second portion having a free end and being flexible so as to allow introduction and clamping of the head, a locking ring embracing the second portion, wherein the head is locked by exerting pressure with the rod onto the locking ring resulting in compression of the second portion of the receiving part and wherein the locking ring is mounted to the receiving part from the free end of the second portion, the method comprising: attaching the bone anchoring element to a bone or vertebrae;
inserting the head of the bone anchoring element into the second portion of the receiving part;
exerting pressure on the locking ring by the rod to cause the locking ring to compress second portion to lock the head relative to the receiving part.
17. The bone anchoring device according to claim 8, wherein the locking ring has an annular edge extending in the same direction as the projections, the height of which is sized such that the edge encompasses a portion of the first portion of the receiving part when the head is clamped by the locking ring.
US13/466,773 2007-07-31 2012-05-08 Bone anchoring device Active US8940024B2 (en)
US95317007P true 2007-07-31 2007-07-31
EP07015041 2007-07-31
EPEP07015041.2 2007-07-31
US12/183,932 Continuation US8192470B2 (en) 2007-07-31 2008-07-31 Bone anchoring device
US14/584,287 Continuation US9289246B2 (en) 2007-07-31 2014-12-29 Bone anchoring device
US20120283789A1 true US20120283789A1 (en) 2012-11-08
US8940024B2 US8940024B2 (en) 2015-01-27
US12/183,932 Active 2030-12-16 US8192470B2 (en) 2007-07-31 2008-07-31 Bone anchoring device
US13/466,773 Active US8940024B2 (en) 2007-07-31 2012-05-08 Bone anchoring device
US14/584,287 Active US9289246B2 (en) 2007-07-31 2014-12-29 Bone anchoring device
US20150134004A1 (en) * 2013-11-08 2015-05-14 Blackstone Medical, Inc. Lockable pedicle fastener
EP3278750B1 (en) * 2016-08-04 2018-12-12 Biedermann Technologies GmbH & Co. KG Polyaxial bone anchoring device and system of an instrument and a polyaxial bone anchoring device
EP2022423B1 (en) 2010-07-14
US8568458B2 (en) 2013-10-29 Bone anchoring device
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BIEDERMANN, LUTZ;MATTHIS, WILFRIED;DANNECKER, BERTHOLD;REEL/FRAME:036167/0091
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BIEDERMANN MOTECH GMBH & CO. KG;REEL/FRAME:036167/0257
Free format text: CHANGE OF LEGAL FORM;ASSIGNOR:BIEDERMANN MOTECH GMBH;REEL/FRAME:036175/0769