Source: https://patents.google.com/patent/EP2322107B1/en
Timestamp: 2019-10-19 23:42:20
Document Index: 156443030

Matched Legal Cases: ['art 4', 'art 4', 'art 4', 'art 4', 'art 4', 'art 4', 'art 4', 'art 4', 'art 4', 'art 4', 'art 4', 'art 4', 'art 4', 'art 4', 'art 4', 'art. 76', 'art. 76']

EP2322107B1 - Bone anchoring device - Google Patents
Bone anchoring device Download PDF
EP2322107B1
EP2322107B1 EP10186242.3A EP10186242A EP2322107B1 EP 2322107 B1 EP2322107 B1 EP 2322107B1 EP 10186242 A EP10186242 A EP 10186242A EP 2322107 B1 EP2322107 B1 EP 2322107B1
EP10186242.3A
EP2322107A1 (en
2006-12-22 Application filed by Biedermann Motech GmbH and Co KG filed Critical Biedermann Motech GmbH and Co KG
2006-12-22 Priority to EP06026705A priority Critical patent/EP1935358B1/en
2006-12-22 Priority to EP10186242.3A priority patent/EP2322107B1/en
2011-05-18 Publication of EP2322107A1 publication Critical patent/EP2322107A1/en
2014-06-04 Publication of EP2322107B1 publication Critical patent/EP2322107B1/en
210000000988 Bone and Bones Anatomy 0 description title 56
238000004873 anchoring Methods 0 claims description title 52
The invention relates to a bone anchoring device comprising a shank to be anchored in a bone or a vertebra and a receiving part connected to the shank for receiving a rod. The rod is locked by means of a locking device having an engagement structure for the engagement with a tool, the engagement structure being provided at the outer circumference of the locking device. The engagement structure projects above the receiving part but does not project beyond the receiving part in a lateral direction. In particular the invention relates to a polyaxial bone screw wherein the head of the screw and a rod can be fixed independently and which has a reduced size.
US 6,224,598 B1 discloses a threaded plug closure adapted for use in securing a rod member to a bone screw implant, said closure comprising a plug having a threaded cylindrically-shaped outer surface, said plug being received between a pair of arms of a medical implant during use, a central coaxial bore passing entirely through that plug, said central bore having an internal threaded surface which is shaped to receive a set screw. The plug closure and the set screw can be independently installed and the set screw tightened to cooperatively provide capture and locking of the rod in order to secure the rod against translational and rotational movement relative to the bone screw.
US 2003/0100896 A1 discloses a bone anchoring device according to the preamble of claim 1 with a shank and a receiving part connected to it for connecting to a rod. The receiving part has a recess having a U-shaped cross section for receiving the rod forming two open legs. An internal thread is provided on the open legs. A locking assembly is provided comprising a nut member with an external thread which cooperates with the internal thread of the legs and a set screw. The nut member has on one end slits for engagement with a screw tool. The shank has a spherically-shaped head which is pivotably held in the receiving part and a pressure element is provided which exerts pressure on the head when the nut member is tightened. By tightening the set screw the rod is fixed in the receiving part. Hence, the rod and the head can be fixed independently from each other. The internal thread and the cooperating external thread of the nut member are designed as a flat thread. The implant has a compact design, since an outer ring or nut to prevent splaying of the legs is not necessary.
US 6,063,090 discloses a bone anchoring device with a locking assembly consisting of two parts, a tensioning screw fixing the spherical head via an insert without jamming the rod and a tension means fixing the rod.
US 2006/0036244 A1 also discloses a bone anchoring device with a two part locking cap for fixing the head and the rod independently. The tensioning screw has a coaxial recess with a structure for engagement with a tool.
The outer diameter of the locking device is under various aspects determined by the required tightening torque and the thread form. In turn, the overall dimensions of the upper portion of the bone anchoring device are determined by the size of the locking device. For certain applications, it is crucial to have the distance between one bone anchoring device and a neighboring bone anchoring device as small as possible, for example for correcting scoliosis in infants or for the application in the cervical region of the spine.
US 2003/100896 A1 discloses an element with a shank and a holding element connected to a rod. Two flanks of a inner thread of the holding element enclose an angle of 90°, respectively, with the central axis of the holding element.
US 2006/064091 A1 discloses a spinal fixation system, comprising a cross connector, a coupling member having a rod-receiving recess for coupling to a spinal rod without anchoring the bone, and a bone anchor having a shaft for engaging bone and a head configured to maze to the cross connector and having a rod-receiving recess for coupling to a spinal rod.
FR 2 869 215 A1 discloses a bone anchoring element which comprises a receiving part for receiving a screw member having a shaft and a head, a rod and a locking device.
It is the object of the invention to provide a bone anchoring device with a locking device which has the same reliability as the known devices but which has significantly smaller dimensions of the upper portion in the direction of the rod axis. The object is solved by a bone anchoring device according to claim 1. Further developments of the bone anchoring device are given in the dependent claims.
The locking device used in the bone anchoring device according to the invention has a structure for engagement with a tool which is provided at the outer surface in the upper part of the locking device. Hence, the size of the bone anchoring device in the direction of the rod axis can be reduced. The locking device has an improved accessibility for the tool which facilitates the handling during surgery. The bone anchoring device with such a reduced size and improved accessibility is particularly suitable for the application in paediatric surgery or for applications to the cervical spine or other areas where a limited available space requires compact implants. The locking device is designed such that a stop provides safety against disassembly in use.
It is further possible to upgrade existing polyaxial bone screws which have a single part locking device with the pressure element and the two part locking device according to the invention. Further, the bone anchoring device has the advantage that it can be used with the choice of a locking device in two ways. If a single part locking device is selected, it is possible to simultaneously lock the head in the polyaxial position and to fix the rod. If a two part locking device is selected, it is possible to separately lock the head and fix the rod.
Further, the bone anchoring device is compact in size since it is not necessary to use an outer nut or ring to prevent splaying of the legs of the receiving part.
Further features and advantages of the invention will become apparent from the description of embodiments in conjunction with the accompanying drawings.
Fig. 1 shows a perspective exploded view of a bone anchoring device according to a first embodiment.
Fig. 2 shows a perspective view of the bone anchoring device in an assembled state.
Fig. 3 shows a sectional view of the bone anchoring device in an assembled state the section being taken in a plane perpendicular to the rod axis.
Fig. 4 shows a sectional view of the locking device according to the first embodiment.
Fig. 5 shows a side view of the locking device of Fig. 4.
Fig. 6 shows a top view of the locking device according to Fig. 4.
Fig. 7 shows a perspective exploded view of the bone anchoring device according to a second embodiment which is an embodiment of the invention.
Fig. 8 shows a sectional view of the bone anchoring device according to the second embodiment in an assembled state, the section being taken in a plane perpendicular to the rod axis.
Fig. 9a shows an enlarged portion of Fig. 8; Fig. 9b shows the portion as depicted in Fig. 9a with a locking element having a minimized outer diameter of the engagement structure.
Fig. 10 shows shows a perspective exploded view of the bone anchoring device according to a third embodiment.
Fig. 11 schematically shows the locking device and the pressure device of the bone anchoring device according to the first embodiment to be used as an upgrade of an existing polyaxial bone screw.
Fig. 12 shows a modular system of bone anchoring devices including the bone anchoring devices of the first, second and third embodiments.
As can be seen in particular in Figs. 1 to 3, the bone anchoring device according to a first embodiment includes a screw element 1 having a shank 2 with a bone thread (not shown) and a head 3. In the embodiment, the head 3 has the shape of a segment of a sphere. On its surface opposite to the shank, the head 3 comprises a recess 3a for engagement with a tool. The screw element 1 is received in a receiving part 4 which has a first end 5 and a second end 6 and is of approximately cylindrical construction. The two ends are perpendicular to a longitudinal axis L. Coaxially with the longitudinal axis L, a bore 7 is provided which extends from the first end 6 to a predetermined distance from the second end 6. At the second end 6, an opening 8 is provided, the diameter of which is smaller than the diameter of the bore 7. The coaxial bore 7 tapers towards the opening 8. In the embodiment shown it tapers in form of a spherically-shaped section 9. However, the section 9 can have any other shapes such as, for example, a conical shape.
The receiving part 4 further has a U-shaped recess 10 which starts at the first end 5 and extends in the direction of the second end 6 to a distance from the second end 6. By means of the U-shaped recess, two free legs 11, 12 are formed ending towards the first end 5. An internal thread 13 is provided on the inner surface of the legs 11, 12. In the embodiment shown, the internal thread is a flat thread having horizontal upper and lower thread flanks.
Furtheron, a pressure element 14 is provided which has a substantially cylindrical construction with an outer diameter sized so as to allow the pressure element 14 to be introduced into the bore 7 of the receiving part and to be moved in the axial direction. On its lower side facing towards the second end 6, the pressure element 14 comprises a recess 15 cooperating with the head 3. The recess 15 can be spherically-shaped so as to match the contour of the spherical section of the head 3. On its opposite side the pressure element 14 has a U-shaped recess 16 by means of which two free legs 17, 18 are formed. The lateral diameter of this U-shaped recess is selected such that a rod 20 with a diameter D which is to be received in the receiving part 4 can be inserted into the recess 16 and guided laterally therein. The depth of the U-shaped recess 16 is larger than the diameter D of the rod 20 so that the legs 17, 18 extend above the surface of the rod 20 when the rod is inserted. The pressure element further comprises a recess 21 at the inner side of the legs 17, 18 adjacent to the upper end. A bore 19 is provided in the pressure element for accessing the head 3 of the screw element with a tool.
As can be seen in Fig. 3, the pressure element 17 and the receiving part 4 can have crimp bores 50, 50a on opposite sides, respectively, in order to loosely hold the pressure element 14 within a receiving part in a position where the U-shaped recess 16 of the pressure element and the U-shaped recess 10 of the receiving part are aligned.
The bone anchoring device further comprises a locking device 30. The locking device 30 includes, as shown in particular in Figs. 1 to 6 a first locking member 31 and a second member 32.
The first locking member 31 has a first end 33 and a second end 34 and a portion with a substantially cylindrical shape with an external thread 35 on the outer surface of that portion. As shown in particular in Figs. 4 and 5 the external thread 35 is a flat thread which matches the internal thread 13 of the receiving part 4. The first locking member 30 further comprises an axial bore 36 extending through the entire first locking member. The coaxial bore 36 is provided with an internal thread 37 in at least a portion thereof, the portion corresponding approximately to the outer threaded surface portion of the first locking member. The internal thread 37 is in the embodiment shown formed as a metric thread. The axial length of the threaded outer surface portion with the external thread 35 of the first locking member 31 is such that the external thread 35 cooperates with the internal thread 13 of the legs 11, 12.
The first locking member 31 comprises adjacent to or in the vicinity of its first end 33 an engagement structure 38 which is provided at the circumference and which can be shaped as a polygon. The outer diameter of the engagement structure 38 in the embodiment shown is larger than the outer diameter of the external thread 35 of the locking member. Hence, the engagement structure 38 can form a stop when the first locking member is tightened. On the other hand, the maximum outer diameter of the engagement structure 38 is equal to or smaller than the outer diameter of the receiving part measured between opposite sides of the legs, as can particularly be seen in Figs. 2 and 3. Hence, the engagement structure 38 does not laterally project beyond the outer contour of the receiving part 4. The minimum outer diameter is larger than the inner diameter of the internal thread 13. The engagement structure 38 serves for engagement with a tool in a form-fit manner. It needs not to be in the shape of a polygon, but can have other shapes. For example, the outer contour of the engagement structure can be triangular, square, star-shaped, circular with two opposite flattened sides, or otherwise shaped.
Adjacent to its first end 33 the first locking member 31 comprises a recess 40 which serves for accommodating a part of the second locking member described below. The total length of the first locking member 31 in the axial direction is such that, as shown in Fig. 3, in an assembled state the first locking member 31 presses with its second end 34 on to the legs 17, 18 of the pressure element 14 which in turn presses onto the head.
The second locking member 32 is a screw which is to be screwed into the coaxial bore 36 of the first locking member 31. On one side the second locking member 32 comprises a thread free section with an annular shoulder the outer diameter of which is slightly smaller than the inner diameter of the recess 40 of the first locking member, so that the shoulder 41 can be accommodated in the recess 40. Hence, the recess 40 forms a stop for screwing-in the second locking member 32. Furtheron, the second locking member 32 comprises a recess 42 at the end where the annular shoulder is provided for engagement with a tool. The recess 42 can be shaped as a hexagon recess or can have axial grooves arranged in a shape of a star.
The axial length of the second locking member 32 is such that when the second locking member 32 is inserted into the first locking member and the locking device is screwed-in between the legs of the receiving part, the second locking member presses onto the rod 20, but does not contact the pressure element 14. As can be seen in Fig.3, there is a gap 43 between the bottom of the recess 20 of the pressure element and the lower side of the second locking member.
The shoulder 41 can serve for gripping the second locking member in order to assemble it with the first locking member and to provide a stop.
In operation, first, at least two usually preassembled bone anchoring devices each comprising a screw element 1, the receiving part 4 and the pressure element 14 are screwed into the bone.
Thereafter, the rod 20 is inserted into the U-shaped recess 10 of the receiving part 4. Then the locking device 30 comprising the first locking element 31 and the second locking element 32 which can be preassembled, is screwed-in between the legs 11, 12 of the receiving part 4. The first locking element 31 is then tightened by applying a tool (not shown) to the engagement structure 38 until the first locking member 31 presses onto the free legs of the pressure element. By tightening the first locking member 31 the pressure element 14 exerts a pressure onto the head 3 of the screw element 1 to lock the head 3 in its angular position within the receiving part 4. The stop provided by the engagement structure 38 limits the applied force to a specific value.
When the head is locked, the rod 20 is still slidable in the receiving part. By tightening the second locking member 32 the second locking member 32 moves downwards and presses onto the rod to fix the rod in its position. The force exerted onto the rod can be well defined using the stop provided by the annular shoulder 41 abutting against the bottom of recess 40.
By means of providing the engagement structure 38 on the outer circumference of the first locking member the first locking member can be made smaller in its dimensions, in particular, with a smaller diameter of the outer threaded surface section. If the first locking member 31 can be made with a smaller outer diameter,in turn, the receiving part can be made with a smaller outer diameter. As a result thereof, the distance between two bone anchoring devices in the direction of the rod can be made smaller. The shoulder 41 facilitates handling of the second locking member.
A second embodiment of the bone anchoring device which is an embodiment of the invention is shown in Fig. 7 to 9a and 9b. Parts which are identical to the first embodiment are designated with the same reference numerals and the description thereof will not be repeated. The bone anchoring device according to the second embodiment comprises a single part locking device 50.
As shown in Fig. 7 to 9b the single part locking device is an inner screw which can be screwed between the legs 11, 12 of the receiving part 4. The thread 55 of the screw is in this embodiment a flat thread cooperating with the flat thread provided at the legs. On its side facing the pressure element 14 the inner screw has a projection 51 the diameter of which is just as large that the projection 51 can press onto the rod 20 without touching the pressure element. The length of the single part locking device 50 and the length of the cylindrical projection 51 is such that as shown in Fig. 8 in the tightened state the cylindrical projection 51 contacts the rod and there is a gap 52 between the lower surface 53 of the single part locking device and the legs 17, 18 of the pressure element 14. On the side opposite to the projection 51 the single part locking device 50 comprises an engagement structure 54, which can have a polygon shape for engagement with a tool. The engagement structure 54 is similar to the engagement structure 38 of the first locking element 31 of the two-part locking device 30 of the first embodiment. As shown in Fig. 9a, the outer diameter D is smaller than the outer diameter DR of the receiving part 4 in the region of the legs. As shown in Fig. 9b in an even smaller version of the locking element, the outer diameter D' is only sligtly larger than the inner diameter of the inner thread DT.
The engagement structure projects above the receiving part 4. Therefore the tightening of the locking element with a tool during surgery is facilitated since the engagement structure is easily accessible with the tool.
Use of the bone anchoring device is the same as for the first embodiment with the exception that the single part locking device 50 is used instead of the locking device 30 of the first embodiment. In this case, the single part locking device 50 presses onto the rod which in turn presses onto the pressure element 14 to fix the head 3 in the receiving part 4. Hence, the rod and the head are fixed simultaneously.
Fig. 10 shows a third embodiment of the bone anchoring device. It differs from the second embodiment mainly by the shape of the pressure element. All other parts are the same. The pressure element 140 differs from the pressure element 14 of the first and second embodiment in has short legs 141, 142 which do not project above the rod when the rod is inserted. All other features are the same as that of the pressure element 14.
In a further modification, the pressure element 140 does not have a recess for receiving the rod and also no legs. It can be formed as a pressure disk. In a further modification the single part locking element 30 does not have a projection 51 for pressing onto the rod.
Fig. 11 schematically shows the locking device 30 and the pressure element 14 of the bone anchoring device according to the first embodiment to be used as an upgrade of an existing polyaxial bone screw with a single part locking element. A known polyaxial bone screw 200 has a single part locking element 250 in form of a set screw and a pressure disk 214. Known anchoring devices with a two-part locking device (not shown) would have a larger size in terms of the outer diameter of the receiving part compared to the bone anchoring device having the single part locking element 250. It is, however, possible to upgrade the existing bone anchoring device 200 by exchanging the set screw 250 and the pressure disk 214 with the locking device 30 and the pressure element 14 according to the first embodiment. Hence, a bone anchoring device with minimized dimensions and with the advantage of being able to fix the rod and the head independently is provided.
Fig. 12 shows a modular system of bone anchoring devices including the bone anchoring devices of the first, second and third embodiments. The single-part and the two-part locking devices can be used interchangeably if the pressure element 14 is used. Alternatively, the single-part locking device can be used with the pressure element 14 or 140.
The surgeon can select whether the single part locking device 50 or the two-part locking device 30 is to be used in conjunction with the same bone anchoring device. For certain applications a single part locking device for simultaneous locking of head and rod is of advantage, in particular, if the fixation has to take place rapidly. For certain other applications it is of advantage to have the separate fixation of the head and the rod. Since the surgeon can use the same bone anchoring device and is free to select a desired locking device, it is not necessary to have different receiving parts with different pressure elements for different bone anchoring devices available.
Modifications of the embodiments are possible. Instead of a flat thread other thread forms can be used. Further, the section 10 of the receiving part 4 against which the head 3 rests needs not to be spherically-shaped but can have any other shape as long as the head 3 is held by the edge of the opening 8 like a ball and socket joined. In a further modification, the receiving part is designed so as to allow the introduction of the head from the bottom of the receiving part from the second end.
A bone anchoring device including
an anchoring element (1) comprising a shank (2) to be anchored in a bone or a vertebra and a head,
a receiving part (4) connectable to the shank, the receiving part comprising a first end (5) opposite to the shank and a second end (6) facing the shank, a longitudinal axis (L) passing through the two ends, a bore (7) coaxial with the longitudinal axis extending from the first end through at least a portion of the receiving part and a substantially U-shaped recess (10) for receiving a rod (20), the recess forming two free legs (11, 12) extending in the direction of the first end, the legs being provided with an internal thread (13),
a locking device (50) for securing the rod in the receiving part said locking device ( 50) comprising:
an external thread (55) cooperating with the internal thread (13), and
an engagement structure (54), the structure being engageable with a tool in a form-fit manner and wherein a maximum outer diameter of said locking device (50) in the region of said structure (54) is larger than the inner diameter of the internal thread (13) of the receiving part,
said receiving part (4) comprissing a region (9) adjacent to said second end for pivotably receiving said head, wherein a pressure element (14) is arranged in the receiving part (4) between the head (3) and the locking device (50) for exerting pressure onto said head to lock the head in the receiving part and wherein said pressure element (14) has a substantially U-shaped recess (16) for receiving at least a part of the rod (20), the depth of the recess being larger than the diameter of the rod,
said engagement structure is provided at the circumference of at least a part of the outer surface of the locking device projecting above the first end (5) of the receiving part,
the outer diameter of the engagement structure (54) is smaller than the outer diameter of the receiving part in the region of said legs (11, 12);
and in that the locking device (50) comprises a single part locking member that has the engagement structure (54).
The bone anchoring device of claim 1 , wherein the single-part locking element has a projection (51) on its side facing the rod (20).
The bone anchoring device of claim 1 or 2, wherein the pressure element (14) is arranged in the receiving part (4) between the head (3) and the locking device (50) for exerting pressure onto said head and wherein the locking device (50) is sized so that a gap (52) is provided between the second locking device (50) and the pressure element (14) in the assembled state.
The bone anchoring device of one of claims 1 to 3, wherein the outer contour of said engagement structure (54) is a polygon or a star.
The bone anchoring device of one of claims 1 to 4, wherein the outer diameter of said engagement structure (38; 54) is larger than the outer diameter of the external thread (35; 55) of the locking device (30; 50).
A modular system including:
a bone anchoring device according to one of claims 1 to 5 and
a two-part locking device (30).
a first locking member (31) having a first end (33) and a second end (34) which is provided with the external thread (35) on at least a portion thereof which cooperates with the internal thread (13) provided on said legs, a coaxial bore (36) passing entirely through the first locking member and an internal thread (37) provided at least a portion of said bore, wherein said first locking member is provided with the engagement structure (38), and
a second locking member (32), the second locking member having an outer surface with an external thread in at least a portion thereof which cooperates with the internal thread provided at said bore (36) of the first locking member (31).
The modular system of claim 6, wherein the two-part locking device (30) and the single-part locking device (50) can be used interchangeably.
The modular system of claim 6 or 7, wherein said first locking member (31) is designed so as to lock the head without fixing the rod and wherein said second locking member (32) is designed so as to fix the rod.
EP10186242.3A 2006-12-22 2006-12-22 Bone anchoring device Expired - Fee Related EP2322107B1 (en)
EP06026705A EP1935358B1 (en) 2006-12-22 2006-12-22 Bone anchoring device
EP10186242.3A EP2322107B1 (en) 2006-12-22 2006-12-22 Bone anchoring device
ES10186242.3T ES2498097T3 (en) 2006-12-22 2006-12-22 Bone anchoring device
EP06026705A Division-Into EP1935358B1 (en) 2006-12-22 2006-12-22 Bone anchoring device
EP06026705A Division EP1935358B1 (en) 2006-12-22 2006-12-22 Bone anchoring device
EP06026705.1 Division 2006-12-22
EP2322107A1 EP2322107A1 (en) 2011-05-18
EP2322107B1 true EP2322107B1 (en) 2014-06-04
ID=38024289
EP10186242.3A Expired - Fee Related EP2322107B1 (en) 2006-12-22 2006-12-22 Bone anchoring device
EP06026705A Expired - Fee Related EP1935358B1 (en) 2006-12-22 2006-12-22 Bone anchoring device
US (2) US8343191B2 (en)
EP (2) EP2322107B1 (en)
JP (1) JP5479678B2 (en)
KR (1) KR101530681B1 (en)
CN (2) CN102670294B (en)
ES (2) ES2395948T3 (en)
TW (2) TW201500030A (en)
US7766915B2 (en) * 2004-02-27 2010-08-03 Jackson Roger P Dynamic fixation assemblies with inner core and outer coil-like member
US8475495B2 (en) 2004-04-08 2013-07-02 Globus Medical Polyaxial screw
US7503924B2 (en) 2004-04-08 2009-03-17 Globus Medical, Inc. Polyaxial screw
US9924975B2 (en) 2014-10-21 2018-03-27 Roger P. Jackson Bone anchor having a snap-fit assembly
US10363070B2 (en) * 2009-06-15 2019-07-30 Roger P. Jackson Pivotal bone anchor assemblies with pressure inserts and snap on articulating retainers
US8221471B2 (en) * 2007-05-24 2012-07-17 Aesculap Implant Systems, Llc Pedicle screw fixation system
KR100987962B1 (en) * 2008-03-14 2010-10-18 주식회사 솔고 바이오메디칼 Apparatus for spinal fixation and manufacturing method thereof
EP2265202B1 (en) * 2008-04-22 2012-08-29 Synthes GmbH Bone fixation element with reduction tabs
US8636740B2 (en) * 2008-05-08 2014-01-28 Aesculap Implant Systems, Llc Minimally invasive spinal stabilization system
EP2135574B1 (en) * 2008-06-19 2011-10-12 BIEDERMANN MOTECH GmbH Bone anchoring assembly
EP2757988A4 (en) 2009-06-15 2015-08-19 Jackson Roger P Polyaxial bone anchor with pop-on shank and winged insert with friction fit compressive collet
EP2727546A3 (en) * 2009-08-20 2014-07-30 Biedermann Technologies GmbH & Co. KG Bone anchoring device, tool and method for assembling the same and tool for use with the same
CA2774471A1 (en) 2009-10-05 2011-04-14 James L. Surber Polyaxial bone anchor with non-pivotable retainer and pop-on shank, some with friction fit
US8740945B2 (en) * 2010-04-07 2014-06-03 Zimmer Spine, Inc. Dynamic stabilization system using polyaxial screws
US9345519B1 (en) * 2010-07-02 2016-05-24 Presidio Surgical, Inc. Pedicle screw
WO2012064360A1 (en) 2010-11-10 2012-05-18 Jackson Roger P Polyaxial bone anchors with pop-on shank, friction fit fully restrained retainer, insert and tool receiving features
WO2012103660A1 (en) * 2011-02-04 2012-08-09 Spinesave Ag Precaution against jamming on open bone screws
US9186187B2 (en) 2011-07-15 2015-11-17 Globus Medical, Inc. Orthopedic fixation devices and methods of installation thereof
US9993269B2 (en) 2011-07-15 2018-06-12 Globus Medical, Inc. Orthopedic fixation devices and methods of installation thereof
US9901378B2 (en) 2011-07-29 2018-02-27 Aesculap Ag Surgical instrumentation for spinal surgery
EP2772216B1 (en) 2011-08-05 2017-11-08 Biedermann Technologies GmbH & Co. KG Locking device for locking a rod-shaped element in a receiving part of a bone anchor and bone anchor with such a locking device
US9655655B2 (en) * 2011-08-16 2017-05-23 Aesculap Implant Systems, Llc Two step locking screw assembly
DE202011051211U1 (en) 2011-09-06 2011-12-01 Aesculap Ag Polyaxial pedicle screw fixation with temporary
DE102011053295A1 (en) 2011-09-06 2013-03-07 Aesculap Ag Polyaxial pedicle screw with provisional fixation
EP2753252A1 (en) 2011-09-07 2014-07-16 Jackson, Roger P. Polyaxial bone anchor with pop-on shank and friction fit retainer with low profile edge lock
DE102011054203A1 (en) * 2011-10-05 2013-04-11 Aesculap Ag Readjustable polyaxial pedicle screw
US20130096618A1 (en) * 2011-10-14 2013-04-18 Thibault Chandanson Bone anchor assemblies
EP2604204B1 (en) * 2011-12-13 2014-10-01 Biedermann Technologies GmbH & Co. KG Monoplanar bone anchoring device with selectable pivot plane
WO2013106217A1 (en) 2012-01-10 2013-07-18 Jackson, Roger, P. Multi-start closures for open implants
EP2668919B1 (en) * 2012-05-31 2015-08-12 Biedermann Technologies GmbH & Co. KG Polyaxial bone anchoring device
EP2687171B1 (en) 2012-07-18 2015-04-22 Biedermann Technologies GmbH & Co. KG Polyaxial bone anchoring device
US8911478B2 (en) * 2012-11-21 2014-12-16 Roger P. Jackson Splay control closure for open bone anchor
US20140336709A1 (en) * 2013-03-13 2014-11-13 Baxano Surgical, Inc. Multi-threaded pedicle screw system
US10342582B2 (en) 2013-03-14 2019-07-09 DePuy Synthes Products, Inc. Bone anchor assemblies and methods with improved locking
US20140277153A1 (en) 2013-03-14 2014-09-18 DePuy Synthes Products, LLC Bone Anchor Assemblies and Methods With Improved Locking
EP2851021B1 (en) 2013-09-19 2016-12-14 Biedermann Technologies GmbH & Co. KG Coupling assembly for coupling a rod to a bone anchoring element, polyaxial bone anchoring device and modular stabilization device
CN105213009A (en) 2015-10-30 2016-01-06 北京市富乐科技开发有限公司 Minimally invasive double-screw-plug screw
CN105581831B (en) * 2015-12-24 2017-03-15 建湖县人民医院 A novel combined pedicle screw locking systems
US5037259A (en) * 1989-10-25 1991-08-06 Avibank Mfg., Inc. Nut with sleeve lock
CA2275250C (en) 1996-12-12 2004-06-29 Synthes (U.S.A.) Device for connecting a longitudinal support to a pedicle screw
WO2000019923A1 (en) * 1998-10-06 2000-04-13 Surgical Dynamics, Inc. Device for securing spinal rods
WO2003041601A1 (en) * 2001-11-14 2003-05-22 Synthes Ag Chur Device for joining a longitudinal support with a bone fixation means
DE10157969C1 (en) 2001-11-27 2003-02-06 Biedermann Motech Gmbh 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
CN1221217C (en) * 2002-01-24 2005-10-05 英属维京群岛商冠亚生技控股集团股份有限公司 Rotary button fixator for vertebration fixing
JP3686622B2 (en) 2002-03-29 2005-08-24 エイ−スパイン ホールディング グループ コーポレイション Rotary spinal fixation device
US8475495B2 (en) * 2004-04-08 2013-07-02 Globus Medical Polyaxial screw
FR2869215B1 (en) * 2004-04-21 2006-10-13 Kotobuki Ika Shoji Company Ltd Device for holding a bar or the like for spinal osteosynthesis
US7204838B2 (en) * 2004-12-20 2007-04-17 Jackson Roger P Medical implant fastener with nested set screw and method
US7559929B2 (en) 2005-02-18 2009-07-14 Warsaw Orthopedic, Inc. Implants and methods for positioning same in surgical approaches to the spine
US8221472B2 (en) * 2005-04-25 2012-07-17 Synthes Usa, Llc Bone anchor with locking cap and method of spinal fixation
EP1795134B1 (en) 2005-11-17 2008-08-06 BIEDERMANN MOTECH GmbH Polyaxial screw for flexible rod
2006-12-22 ES ES06026705T patent/ES2395948T3/en active Active
2006-12-22 ES ES10186242.3T patent/ES2498097T3/en active Active
2006-12-22 EP EP10186242.3A patent/EP2322107B1/en not_active Expired - Fee Related
2006-12-22 EP EP06026705A patent/EP1935358B1/en not_active Expired - Fee Related
2007-12-19 CN CN 201210136075 patent/CN102670294B/en not_active IP Right Cessation
2007-12-19 US US11/960,428 patent/US8343191B2/en active Active
2007-12-19 CN CN 200710160328 patent/CN101264030B/en not_active IP Right Cessation
2007-12-19 JP JP2007327360A patent/JP5479678B2/en not_active Expired - Fee Related
2007-12-19 TW TW103120406A patent/TW201500030A/en unknown
2007-12-19 TW TW96148548A patent/TWI444167B/en not_active IP Right Cessation
2007-12-20 KR KR1020070134241A patent/KR101530681B1/en not_active IP Right Cessation
2012-12-07 US US13/708,410 patent/US8784455B2/en not_active Expired - Fee Related
US8784455B2 (en) 2014-07-22
EP2322107A1 (en) 2011-05-18
ES2395948T3 (en) 2013-02-18
JP5479678B2 (en) 2014-04-23
US20080215100A1 (en) 2008-09-04
CN101264030A (en) 2008-09-17
CN101264030B (en) 2012-07-04
KR20080059056A (en) 2008-06-26
CN102670294B (en) 2014-10-15
TW201500030A (en) 2015-01-01
ES2498097T3 (en) 2014-09-24
US8343191B2 (en) 2013-01-01
CN102670294A (en) 2012-09-19
US20130172935A1 (en) 2013-07-04
KR101530681B1 (en) 2015-06-29
JP2008155028A (en) 2008-07-10
TWI444167B (en) 2014-07-11
EP1935358A1 (en) 2008-06-25
EP1935358B1 (en) 2012-09-26
TW200829206A (en) 2008-07-16
EP1850798B1 (en) 2012-11-21 Polyaxial bone screw assembly
US9351766B2 (en) 2016-05-31 Receiving part for receiving a rod for coupling the rod to a bone anchoring element and a bone anchoring device with such a receiving part
AU2000264233B2 (en) 2004-04-29 Device for connecting a bone fixation element to a longitudinal rod
CN1965769B (en) 2012-11-21 Bone anchoring device
US7294128B2 (en) 2007-11-13 Bone fixation apparatus
ES2423676T3 (en) 2013-09-23 Housing piece to accommodate a rod in order to couple the rod to a bone anchoring element, and bone anchoring device with such a housing piece
CA2321803C (en) 2008-04-08 Slotted head pedicle screw assembly
US9895173B2 (en) 2018-02-20 Element with a shank and a holding element connected to it for connecting to a rod
JP4131766B2 (en) 2008-08-13 The screw of the rotary positioning mechanism
CA2479233C (en) 2009-11-03 Device for a ball-and-socket type connection of two parts
JP4309890B2 (en) 2009-08-05 Plate-type fastening system
US9226778B2 (en) 2016-01-05 Bone anchoring device
EP0879579B1 (en) 2005-08-17 Pedicle screw assembly
CN104856749B (en) 2017-06-06 Bone anchoring device
AU2006229952B2 (en) 2009-04-23 Multi-axial connection system
US6663635B2 (en) 2003-12-16 Bone screw with two-part screw head
CN101357073B (en) 2012-02-29 Bone anchoring device
TWI391121B (en) 2013-04-01 Bone anchoring device
US20100094349A1 (en) 2010-04-15 Multi-Axial Connection System
EP1741396B1 (en) 2009-09-23 Bone anchoring device
2011-05-18 AC Divisional application (art. 76) of:
Ref document number: 1935358
2011-12-21 17P Request for examination filed
2012-01-04 17Q First examination report
Owner name: BIEDERMANN TECHNOLOGIES GMBH & CO. KG
2014-01-15 INTG Announcement of intention to grant
2014-06-04 AK Designated contracting states:
2014-06-04 AC Divisional application (art. 76) of:
2014-06-04 REG Reference to a national code
2014-06-13 REG Reference to a national code
Representative=s name: NOVAGRAAF INTERNATIONAL SA, CH
2014-07-17 REG Reference to a national code
Ref document number: 602006041839
Ref document number: 2498097
2015-05-13 26N No opposition filed
2015-12-18 REG Reference to a national code
2016-02-29 PGFP Postgrant: annual fees paid to national office