Source: https://patents.google.com/patent/US9895173B2/en
Timestamp: 2019-05-27 04:28:11
Document Index: 75513021

Matched Legal Cases: ['art 2', 'art 2', 'art 2', 'art 21', 'art 21', 'art 21', 'art 21', 'art 2', 'art 21', 'art 21', 'art 21', 'art.\n9', 'art.\n20', 'art.\n30']

US9895173B2 - Element with a shank and a holding element connected to it for connecting to a rod - Google Patents
Element with a shank and a holding element connected to it for connecting to a rod Download PDF
US9895173B2
US9895173B2 US15/094,784 US201615094784A US9895173B2 US 9895173 B2 US9895173 B2 US 9895173B2 US 201615094784 A US201615094784 A US 201615094784A US 9895173 B2 US9895173 B2 US 9895173B2
US15/094,784
US20160220282A1 (en
2001-11-27 Priority to DE10157969A priority Critical patent/DE10157969C1/en
2001-11-27 Priority to DE10157969 priority
2001-11-27 Priority to DE10157969.1 priority
2002-11-27 Priority to US10/306,057 priority patent/US8828060B2/en
2014-07-09 Priority to US14/327,434 priority patent/US20150005825A1/en
2016-04-08 Priority to US15/094,784 priority patent/US9895173B2/en
2016-04-08 Application filed by Biedermann Motech GmbH and Co KG filed Critical Biedermann Motech GmbH and Co KG
2016-05-19 Assigned to BIEDERMANN MOTECH GMBH & CO. KG reassignment BIEDERMANN MOTECH GMBH & CO. KG CHANGE OF LEGAL FORM Assignors: BIEDERMANN MOTECH GMBH
2016-05-19 Assigned to BIEDERMANN MOTECH GMBH reassignment BIEDERMANN MOTECH GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HARMS, JURGEN, BIEDERMANN, LUTZ
2016-05-19 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
2016-08-04 Publication of US20160220282A1 publication Critical patent/US20160220282A1/en
2018-02-20 Publication of US9895173B2 publication Critical patent/US9895173B2/en
2018-11-02 First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7707017&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=US9895173(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
2018-11-02 US case 1:18-cv-01372 filed litigation https://portal.unifiedpatents.com/litigation/Virginia%20Eastern%20District%20Court/case/1%3A18-cv-01372 Source: District Court Jurisdiction: Virginia Eastern District Court "Unified Patents Litigation Data" by Unified Patents is licensed under a Creative Commons Attribution 4.0 International License.
2018-11-02 US case 2:18-cv-00585 filed litigation https://portal.unifiedpatents.com/litigation/Virginia%20Eastern%20District%20Court/case/2%3A18-cv-00585 Source: District Court Jurisdiction: Virginia Eastern District Court "Unified Patents Litigation Data" by Unified Patents is licensed under a Creative Commons Attribution 4.0 International License.
An element with a shank (1) and a holding element (2) connected to it for connecting to a rod (100) is provided, wherein the holding element (2) has a recess (3) having a U-shaped cross-section for receiving the rod (100) with two legs (4, 5) open at one end (6) and an inner thread (7) on the open legs (4, 5) and a locking element (9) with an outer thread (8) which cooperates with the inner thread of the legs, wherein the inner thread (7) of the legs and the outer thread (8) of the locking element are constructed with a flat thread in which the two flanks (7 a, 7 b; 8 a, 8 b)) enclose an angle of 90° in each case with the screw axis (S, M). This prevents splaying of the open legs when the locking element is screwed in. The flat thread is easy to produce.
This application is a continuation of U.S. patent application Ser. No. 14/327,434, filed Jul. 9, 2014, which is a continuation of U.S. patent application Ser. No. 10/306,057, filed Nov. 27, 2002, now U.S. Pat. No. 8,828,060, which claims priority of DE 101 57 969.1, filed Nov. 27, 2001, the entire disclosures of which are incorporated herein by reference.
From U.S. Pat. No. 5,005,562 and U.S. Pat. No. 6,074,391 in each case an element according to the preamble of claim 1 is known. The inner thread of the open legs of the holding element or receiving part and the outer thread of the inner screw are constructed with a saw-tooth pitch to avoid splaying of the legs by radially acting forces during screwing in.
An element according to the preamble of claim 1 is also known from WO 00/27 297. In this element the flanks of the inner thread facing away from the open ends of the legs formed by the U-shaped recess enclose a negative angle with a plane perpendicular to the central axis of the receiving part. This is also intended to prevent splaying of the legs.
In the above-described devices either a device encircling the holding element from outside is required to prevent splaying of the legs or the thread to be used is difficult to produce.
This applies in particular to the thread known from WO 00/27 297 with the negative flank angle.
The object is achieved by an element according to claim 1. Further developments of the invention are cited in the subordinate claims.
FIG. 2a shows a partial view of the embodiment of FIG. 1 with the inner screw not yet tightened.
FIG. 2b shows an enlarged illustration of a detail from FIG. 2 a.
FIG. 3a shows a partial view of the embodiment of FIG. 1 with the inner screw tightened.
FIG. 3b shows an enlarged illustration of a detail from FIG. 3 a.
As emerges in particular from the enlarged illustration according to FIG. 2b and FIG. 3b , in this embodiment example the inner thread 7 of the legs and the outer thread 8 of the inner screw 9 are dimensioned relative to one another as follows: radius r1 from the screw axis S to the root of the thread 8 c of the inner screw 9 is smaller than radius r2 from the central axis M of the receiving part 2 to its crest 7 d. Radius r3 from the screw axis S to the crest 8 d of the inner screw 9 is smaller than radius r4 from the central axis M of the receiving part 2 to the root of the thread 7 c of its inner thread.
Furthermore, as shown in FIG. 2b , the dimensions of the thread are such that on unloaded bringing into engagement of inner screw and open legs 4, 5 of the receiving part there is a difference between radii r1 and r2, i.e. a radial play, of 1% to 5% of the outer diameter of the thread, preferably approximately 1%. In the axial direction there is, for a recess of approximately 5 mm, an axial play of approximately 10%.
In operation, after the rod has been placed into the receiving part 2, the inner screw 9 is first loosely screwed in, so that the rod can still be adjusted. To fix the rod 100, the inner screw 9 is tightened. It thereby experiences a counterforce, represented in FIGS. 3a and 3b by the arrow F. As a result flanks 8 a of the outer thread facing the open end 6, and flanks 7 b of the inner thread facing away from the open end come to be on top of one another. The force acting on the thread flanks therein acts only in the axial direction, as illustrated by the short arrows f in FIGS. 3a and 3b . Therefore there is no splaying of the legs 4, 5.
In a second embodiment shown in FIG. 4 the element according to the invention is constructed as a polyaxial bone screw. The polyaxial bone screw has a screw element with a thread shank 1 with a bone thread which is connected to a receiving part 21 via a head 20, shaped like a segment of, a sphere. The receiving part 21 has on one of its ends a first bore 22, aligned symmetrically to the axis, the diameter of which is larger than that of the thread section of the shank 1 and smaller than that of the head 20. The receiving part 21 further has a coaxial second bore 23, which is open at the end opposite to the first bore 22 and the diameter of which is large enough for the screw element to be inserted through the open end with its thread section through the first bore 22 and with its head 20 as far as the bottom of the second bore 23. Between the first and the second bore a small coaxial section 24 is provided which is immediately adjacent to the first bore 22 and is constructed as spherical towards the open end, the radius being substantially identical to the section of the head 20 shaped like a segment of a sphere. Receiving part 21, like receiving part 2 of the first embodiment, has a U-shaped recess 25, arranged as symmetrical to the centre of the part, the bottom of which is directed towards the first bore 22 and by which two open legs 26, 27 are formed, the open end 28 of which forms the upper edge of the receiving part 21. In an area adjacent to the open end 28 the legs 26, 27 have an inner thread 29. The inner thread is constructed according to the invention as a flat thread, as described for the first embodiment.
The receiving part 21′ has, adjacent to its open end 28, a section 23′ which has a larger diameter than the second bore and which tapers conically towards the first bore. The construction of the receiving part in respect of the U-shaped recess and the legs 26, 27 is as in the second embodiment. Adjacent to the open end 28 the inner thread 29 is formed in a predetermined area in section 23′. The inner thread is constructed, as in the first and second embodiment, as a flat thread.
In operation, as in the second embodiment, first the screw element is put into the receiving part. Then, differently from the second embodiment, the pressure element 40 is inserted and is first held loosely over the countersunk and crimped bores 47, 48. Following this the bone screw is screwed into the bone and the rod 100 then placed in Thereupon the nut 50 is screwed in, with inner screw 60 at first loosely screwed into it, until the nut impacts on the upper end of the legs 46 and therefore the pressure element 40 presses on the screw head 20, so that it is locked in its position in the receiving part. Owing to the construction of the inner thread 29 of the legs and the outer thread of the nut 50 as flat threads, the nut 50 does not experience any radial force component, but only an axially directed force, which is why no splaying of the legs takes place. The screw head is thus securely locked. Because the legs 46 of the pressure element project above the placed in rod 100, the rod is still displaceable and yet prevented by the nut 50 from falling out or tilting. Finally, the inner screw 60 is tightened until it presses on the rod 100 and fixes it. Fixing the rod thus takes place independently of fixing the head.
To prevent deformation of the legs 26, 27 of the receiving part 21′ by axial wringing caused by torsion forces at the moment of tightening, the cap-like projection 54 with its bevelled face 55 grips on to the corresponding bevelled face on the outer face of the receiving part. After final tightening there is no longer any torsional loading of this kind and the legs 26, 27 do not experience any force acting outwards, which could occasion loosening of the nut 50′.
Alternatively to the cap-like construction of the projection 54, a ring provided on the screwing in tool can be used.
an anchor element having a shank and a head, the head having a spherically shaped segment;
a receiving part having a recess in a top end having a U-shaped cross-section forming two legs for receiving a rod therebetween, the receiving part comprising an inner thread on each of the two legs;
a locking element to lock the rod in the recess of the receiving part, wherein the locking element has a central axis, a first end with a flat annular surface that extends radially relative to the central axis in a first plane to engage the rod when the locking element is threaded to the receiving part, and a second end with a flat annular surface that extends radially relative to the central axis in a second plane that is parallel to the first plane; and
a pressure element that cooperates with the head to fix an angular position of the anchor element relative to the receiving part when the locking element is tightened;
wherein the receiving part and the head of the anchor element are configured to form a polyaxial connection that permits the spherically shaped segment of the head to swivel in the receiving part when unlocked and wherein tightening of the locking element fixes the angular position of the anchor element relative to the receiving part;
wherein the locking element comprises an outer thread having two flanks, the outer thread cooperates with, the inner thread of the two legs, an upper flank of the two flanks of the outer thread facing the top end of the receiving part and a lower flank of the two flanks of the outer thread facing away from the top end of the receiving part when the locking element is assembled to the receiving part;
wherein in a cross-section of the outer thread of the locking element, the upper and lower flanks of the outer thread are symmetrical and each flank encloses an angle of 90 degrees with the central axis of the locking element;
wherein the inner thread on each of the two legs comprises two flanks, an upper flank facing the top end of the receiving part and a lower flank facing away from the top end of the receiving part; and
wherein a cross-section of the outer thread of the locking element is substantially rectangular and when assembled the lower flank of the inner thread matches a shape of the upper flank of the outer thread such that locking the rod between the legs with the locking element avoids splaying of the legs.
2. The polyaxial bone anchor of claim 1, wherein, in a view of the U-shaped cross-section of the receiving part when the locking element is assembled to the receiving part, the outer thread of the locking element comprises a maximum of four fully formed thread sections.
3. The polyaxial bone anchor of claim 1, wherein the central axis of the locking element defines a rotational axis of the locking element, with the first and second ends spaced from each other along the rotational axis, and wherein the locking element has an opening at each of the first and second ends, the respective openings at the first and second ends having the same cross-section, such that the opening at each of the first and second ends of the locking element is configured to receive a screw tool to tighten the locking element against the rod.
4. The polyaxial bone anchor of claim 3, wherein a single recess passes through the entire length of the locking element and intersects the first and second ends to define the openings at the first and second ends.
5. The polyaxial bone anchor of claim 3, wherein the locking element is configured to be threaded to the receiving part from either end of the locking element.
6. The polyaxial bone anchor of claim 1, wherein the locking element comprises a nut having an inner thread and an inner screw that cooperates with the inner thread of the nut.
7. The polyaxial bone anchor of claim 6, further comprising the rod, wherein, when the pressure element is assembled to the receiving part, the pressure element comprises a side facing away from the head, the side having a recess which is open to the top end for receiving the rod, the recess having an axial depth in an axial direction larger than a diameter of the rod.
8. The polyaxial bone anchor of claim 1, wherein the locking element fits entirely between the legs of the receiving part.
9. The polyaxial bone anchor of claim 1, wherein a cross-section of the inner thread on each of the two legs of the receiving part is substantially rectangular.
10. The polyaxial bone anchor of claim 9, wherein the two flanks of the inner thread on each of the two legs are without undercuts or steps.
11. The polyaxial bone anchor of claim 1, wherein the receiving part comprises an unthreaded bore adjacent to and below the inner thread on each of the two legs, the unthreaded bore having a diameter greater than a diameter at the crest of the inner thread, wherein the U-shaped cross-section has a bottom opposite the top end of the receiving part, and wherein the unthreaded bore is positioned closer axially to a bottommost crest of the inner thread than to the bottom of the U-shaped cross-section.
12. The polyaxial bone anchor of claim 1, wherein the pressure element has a coaxial bore to provide access to the head of the anchor element when assembled.
13. The polyaxial bone anchor of claim 1, wherein the receiving part has a seat and, when assembled, the spherically shaped segment of the head directly contacts and is permitted to swivel on the seat prior to locking.
14. A polyaxial bone anchor comprising:
a receiving part having a recess in a tap end having a U-shaped cross-section forming two legs for receiving the rod therebetween, the receiving part comprising an inner thread on each of the two legs;
a two part locking element to lock the rod in the recess of the receiving part, the two part locking element comprising an outer locking element and an inner locking element; and
a pressure element that cooperates with the head to fix an angular position of the anchor element relative to the receiving part when the outer or inner locking element is tightened, wherein when the anchor element and the pressure element are assembled to the receiving part, a side of the pressure element facing away from the head has a recess that is open to the top end for receiving the rod, such that when the rod is received in the recess of the pressure element the outer locking element is configured to contact the pressure element and the inner locking element is configured to contact the rod;
wherein the receiving part and the head of the anchor element are configured to form a polyaxial connection that permits the spherically shaped segment of the head to swivel in the receiving part when unlocked and wherein tightening of the outer or inner locking element fixes the angular position of the anchor element relative to the receiving part;
wherein the outer locking element comprises an outer thread having two flanks, the outer thread cooperates with the inner thread of the two legs, an upper flank of the two flanks of the outer thread facing the top end of the receiving part and a lower flank of the two flanks of the outer thread facing away from the top end of the receiving part when the outer locking element is assembled to the receiving part;
wherein in a cross-section of the outer thread of the outer locking element, the upper and lower flanks of the outer thread are symmetrical and each flank encloses an angle of 90 degrees with a central axis of the outer locking element;
wherein the inner thread on each of the two legs comprises two flanks, an upper flank facing the top end of the receiving part and a lower flank facing away from the top end of the receiving part;
wherein a cross-section of the outer thread of the outer locking element is substantially rectangular, and when assembled, the lower flank of the inner thread matches a shape of the upper flank of the outer thread such that locking the rod between the legs with the outer or inner locking element avoids splaying of the legs; and
wherein the inner locking element has an outer thread that cooperates with an inner thread of the outer locking element to permit movement of the inner locking element into the recess of the receiving part to lock the rod between the two legs.
15. The polyaxial bone anchor of claim 14, wherein, in a view of the U-shaped cross-section of the receiving part when the outer locking element is assembled to the receiving part, the outer thread of the outer locking element comprises a maximum of four fully formed thread sections.
16. The polyaxial bone anchor of claim 14, wherein the outer locking element has tool engagement grooves extending longitudinally along the inside of the outer locking element for engagement with a locking tool.
17. The polyaxial bone anchor of claim 16, wherein respective upper ends of the tool engagement grooves are spaced from an outer surface of the outer locking element by a solid annular wall of the outer locking element.
18. The polyaxial bone anchor of claim 14, wherein the recess of the pressure element has a depth in an axial direction that is larger than a diameter of the rod.
19. The polyaxial bone anchor of claim 14, wherein the outer locking element fits entirely between the legs of the receiving part.
20. The polyaxial bone anchor of claim 14, wherein the outer locking element has a first end with a flat annular surface that extends radially relative to the central axis in a first plane to engage the rod when the outer locking element is threaded to the receiving part, and a second end with a flat annular surface that extends radially relative to the central axis in a second plane that is parallel to the first plane.
21. The polyaxial bone anchor of claim 14, wherein a cross-section of the inner thread on each of the two legs of the receiving part is substantially rectangular.
22. The polyaxial bone anchor of claim 21, wherein the two flanks of the inner thread on each of the two legs are without undercuts or steps.
23. The polyaxial bone anchor of claim 14, wherein the receiving part comprises an unthreaded bore adjacent to and below the inner thread on each of the two legs, the unthreaded bore having a diameter greater than a diameter at the crest of the inner thread, wherein the U-shaped cross-section has a bottom opposite the top end of the receiving part, and wherein the unthreaded bore is positioned closer axially to a bottommost crest of the inner thread than to the bottom of the U-shaped cross-section.
24. The polyaxial bone anchor of claim 14, wherein the pressure element has a coaxial bore to provide access to the head of the anchor element when assembled.
25. A method of connecting a rod to a bone with a polyaxial bone anchor, wherein the polyaxial bone anchor comprises:
a receiving part having a recess in a top end having a U-shaped cross-section forming two legs for receiving the rod therebetween, the receiving part comprising an inner thread on each of the two legs;
wherein the locking element comprises an outer thread having two flanks, the outer thread cooperates with the inner thread of the two legs, an upper flank of the two flanks of the outer thread facing the top end of the receiving part and a lower flank of the two flanks of the outer thread facing away from the top end of the receiving part when the locking element is assembled to the receiving part;
wherein a cross-section of the outer thread of the locking element is substantially rectangular, and when assembled, the lower flank of the inner thread matches a shape of the upper flank of the outer thread such that locking the rod between the legs with the locking element avoids splaying of the legs,
attaching the shank to a bone;
placing the rod into the recess of the receiving part;
threading the locking element to the inner threads of the legs of the receiving part; and
sufficiently tightening the locking element to lock the rod in the receiving part and to fix the angular position of the anchor element relative to the receiving part while avoiding splaying of the legs.
26. A polyaxial bone anchor comprising:
a locking element to lock the rod in the recess of the receiving part, wherein the locking element has a central axis defining a rotational axis of the locking element and first and second ends spaced from each other along the rotational axis; and
wherein in a cross-section of the outer thread of the locking element, the upper and lower flanks of the outer thread are symmetrical and each flank encloses an angle of 90 degrees with the central axis of the locking element, and wherein the locking element has an opening at each of the first and second ends, the respective openings at the first and second ends having the same cross-section, such that the opening at each of the first and second ends of the locking element is configured to receive a screw tool for threading the locking element to the receiving part from either end of the locking element and for tightening the locking element against the rod;
wherein a cross-section of the outer thread of the locking element is substantially rectangular, and when assembled, the lower flank of the inner thread matches a shape of the upper flank of the outer thread such that locking the rod between the legs with the locking element avoids splaying of the legs.
27. The polyaxial bone anchor of claim 26, wherein, in a view of the U-shaped cross-section of the receiving part when the locking element is assembled to the receiving part, the outer thread of the locking element comprises a maximum of four fully formed thread sections.
28. The polyaxial bone anchor of claim 26, wherein a single recess passes through the entire length of the locking element and intersects the first and second ends to define the openings at the first and second ends.
29. The polyaxial bone anchor of claim 26, wherein the locking element fits entirely between the legs of the receiving part.
30. The polyaxial bone anchor of claim 26, wherein a cross-section of the inner thread on each of the two legs of the receiving part is substantially rectangular.
31. The polyaxial bone anchor of claim 30, wherein the two flanks of the inner thread on each of the two legs are without undercuts or steps.
32. The polyaxial bone anchor of claim 26, wherein the receiving part comprises an unthreaded bore adjacent to and below the inner thread on each of the two legs, the unthreaded bore having a diameter greater than a diameter at the crest of the inner thread, wherein the U-shaped cross-section has a bottom opposite the top end of the receiving part, and wherein the unthreaded bore is positioned closer axially to a bottommost crest of the inner thread than to the bottom of the U-shaped cross-section.
33. The polyaxial bone anchor of claim 26, wherein the pressure element has a coaxial bore to provide access to the head of the anchor element when assembled.
34. The polyaxial bone anchor of claim 26, wherein the receiving part has a seat and, when assembled, the spherically shaped segment of the head directly contacts and is permitted to swivel on the seat prior to locking.
35. A polyaxial bone anchor comprising:
a receiving part having a recess in a top end having a U-shaped cross-section forming two legs for receiving a rod therebetween, the U-shaped cross-section having a bottom opposite the top end, the receiving part comprising an inner thread on each of the two legs and an unthreaded bore adjacent to and below the inner thread on each of the two legs, the unthreaded bore having a diameter greater than a diameter at the crest of the inner thread, wherein the unthreaded bore is positioned closer axially to a bottommost crest of the inner thread than to the bottom of the U-shaped cross-section;
a locking element to lock the rod in the recess of the receiving part; and
wherein in a cross-section of the outer thread of the locking element, the upper and lower flanks of the outer thread are symmetrical and each flank encloses an angle of 90 degrees with a central axis of the locking element;
US15/094,784 2001-11-27 2016-04-08 Element with a shank and a holding element connected to it for connecting to a rod Active US9895173B2 (en)
DE10157969A DE10157969C1 (en) 2001-11-27 2001-11-27 Element used in spinal and accident surgery comprises a shaft joined to a holding element having a U-shaped recess with two free arms having an internal thread with flanks lying at right angles to the central axis of the holding element
US10/306,057 US8828060B2 (en) 2001-11-27 2002-11-27 Element with a shank and a holding element connected to it for connecting to a rod
US14/327,434 US20150005825A1 (en) 2001-11-27 2014-07-09 Element with a shank and a holding element connected to it for connecting to a rod
US15/094,784 US9895173B2 (en) 2001-11-27 2016-04-08 Element with a shank and a holding element connected to it for connecting to a rod
US14/327,434 Continuation US20150005825A1 (en) 2001-11-27 2014-07-09 Element with a shank and a holding element connected to it for connecting to a rod
US20160220282A1 US20160220282A1 (en) 2016-08-04
US9895173B2 true US9895173B2 (en) 2018-02-20
US10/306,057 Active US8828060B2 (en) 2001-11-27 2002-11-27 Element with a shank and a holding element connected to it for connecting to a rod
US13/483,792 Abandoned US20120328394A1 (en) 2001-11-27 2012-05-30 Element with a shank and a holding element connected to it for connecting to a rod
US14/327,434 Pending US20150005825A1 (en) 2001-11-27 2014-07-09 Element with a shank and a holding element connected to it for connecting to a rod
US15/094,784 Active US9895173B2 (en) 2001-11-27 2016-04-08 Element with a shank and a holding element connected to it for connecting to a rod
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2001-11-27 DE DE10157969A patent/DE10157969C1/en active Active
2002-11-13 EP EP02025337A patent/EP1316295B1/en active Active
2002-11-13 DE DE50204516A patent/DE50204516D1/en active Active
2002-11-26 KR KR1020020073767A patent/KR100776779B1/en active IP Right Grant
2002-11-26 JP JP2002342605A patent/JP4303942B2/en active Active
2002-11-27 US US10/306,057 patent/US8828060B2/en active Active
2012-05-30 US US13/483,792 patent/US20120328394A1/en not_active Abandoned
2014-07-09 US US14/327,434 patent/US20150005825A1/en active Pending
2016-04-08 US US15/094,784 patent/US9895173B2/en active Active
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KR20030043723A (en) 2003-06-02
EP1316295B1 (en) 2005-10-12
US20030100896A1 (en) 2003-05-29
DE10157969C1 (en) 2003-02-06
EP1316295A2 (en) 2003-06-04
JP2003220073A (en) 2003-08-05
KR100776779B1 (en) 2007-11-19
US20160220282A1 (en) 2016-08-04
US20150005825A1 (en) 2015-01-01
JP4303942B2 (en) 2009-07-29
US20120328394A1 (en) 2012-12-27
DE50204516D1 (en) 2005-11-17
EP1316295A3 (en) 2004-12-01
US8828060B2 (en) 2014-09-09
US9848892B2 (en) 2017-12-26 Bone anchoring element
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Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BIEDERMANN, LUTZ;HARMS, JURGEN;SIGNING DATES FROM 20021021 TO 20021023;REEL/FRAME:038652/0565
Free format text: CHANGE OF LEGAL FORM;ASSIGNOR:BIEDERMANN MOTECH GMBH;REEL/FRAME:038761/0537