Patent application number | Description | Published |
20130085536 | BONE ANCHORING DEVICE AND TOOL COOPERATING WITH SUCH A BONE ANCHORING DEVICE - A bone anchoring device includes a receiving part including a rod receiving portion with a first end, a second end, and a U-shaped recess for receiving a rod, the recess defining two free legs, and a head receiving portion at the second end for introducing and clamping the head, and a locking ring configured to be arranged around the head receiving portion, the locking ring including an engagement structure for engagement with a tool, the engagement structure defining a width of the locking ring that is greater than a greatest width of the rod receiving portion, wherein the locking ring can assume a locking position exerting a greatest compressive force on the head receiving portion of the receiving part to lock an inserted head, and wherein the locking ring is movable out of the locking position towards the first end of the rod receiving portion. | 04-04-2013 |
20130096622 | POLYAXIAL BONE ANCHORING DEVICE - A polyaxial bone anchoring device includes an anchoring element having a shaft and a head, a receiving part having a first end and a second end, a bore extending from the first end towards the second end, a seat for receiving the head, and at least one threaded through hole transverse to the bore, a pressure element to exert pressure onto the head, such that the head is pivotable and can be locked at an angle relative to the receiving part, the pressure element having at least one hole configured to at least partially align with the through hole, and at least one set screw threadable into the through hole to engage the pressure element at the hole such that a force is exerted by the pressure element onto the head that maintains the head at an adjustable angular position relative to the receiving part by friction. | 04-18-2013 |
20130096623 | POLYAXIAL BONE ANCHORING DEVICE WITH ENLARGED PIVOT ANGLE - A polyaxial bone anchoring device includes a bone anchoring element having a shank and a head, a receiving part including a rod receiving portion, and a head receiving portion having a first end and an open second end with a bounding edge, wherein the head receiving portion is configured to be rotatably connected to the rod receiving portion and is flexible for introduction and clamping of the head, and a locking ring configured to be mounted around the head receiving portion, wherein the head is insertable into the head receiving portion from the second end, is pivotable in the head receiving portion at a larger maximum pivot angle relative to the receiving part at a first location of the bounding edge, and can be locked at an angle relative to the receiving part by compressing the head receiving portion with the locking ring. | 04-18-2013 |
20130338716 | POLYAXIAL BONE ANCHORING DEVICE - A polyaxial bone anchoring device is provided comprising a bone anchoring element ( | 12-19-2013 |
20130338721 | 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 - A receiving part for receiving a rod for coupling the rod to a bone anchoring element includes a receiving part body with a top end, a bottom end, a central axis, a channel for receiving a rod, and an accommodation space for accommodating a head of a bone anchoring element, the accommodation space having an opening at the bottom end for introduction of the head, and a single piece pressure element having a top end, a bottom end, and a flexible portion to clamp the head, wherein the flexible portion has a first slit extending partially around the central axis when the pressure element is in the receiving part body, and a second slit extending from the bottom end of the pressure element to the first slit. | 12-19-2013 |
20140012337 | POLYAXIAL BONE ANCHORING DEVICE - A polyaxial bone anchoring device includes an anchoring element having a shank and a head, a receiving part for receiving the head of the bone anchoring element and a rod, the receiving part including an upper member with a top end and a bottom end, a central axis extending through the top end and the bottom end, a head receiving portion with a passage at the bottom end for introducing the head, and a channel for receiving the rod at the top end, a lower member having a passage and being connectable to the upper member from the bottom end of the upper member, wherein at least one clamping member at or near the bottom end of the upper member is configured to reduce the diameter of the passage of the head receiving portion when the lower member is connected to the upper member to hold the head. | 01-09-2014 |
20140188180 | DYNAMIC BONE ANCHOR - A dynamic bone anchor is provided comprising a longitudinal core member ( | 07-03-2014 |
20150157367 | ROD INSERTION DEVICE FOR INSERTING A ROD INTO A BONE ANCHOR - A rod insertion device for inserting a rod into a bone anchor includes a shaft having a first end, a second end, and a shaft axis; a rod holding member connected to the first end of the shaft and configured to pivot relative to the shaft about a pivot axis and to receive a portion of a rod therein, the rod holding member comprising at least two recesses in an outer surface of the rod holding member and separated from each other along a circumferential direction about the pivot axis; a handle at the second end of the shaft; a locking member configured to lock an inserted rod in the rod holding member; and a detent member configured to selectively engage the rod holding member to latch a pivot position of the rod holding member relative to the shaft. | 06-11-2015 |