摘要:
A receiving part for receiving a rod for coupling the rod to a bone anchoring element is provided, the receiving part including a receiving part body (5) and a rod receiving portion (9) with a channel (12) for receiving the rod, and a head receiving portion (16) for accommodating a head (3, 3') of the bone anchoring element, the head receiving portion having an open end (17) and being flexible so as to allow introduction and clamping of the head, the head receiving portion having an exterior surface with a tapered portion; and a locking ring (8) embracing the head receiving portion (16), wherein the head receiving portion is compressible by the locking ring and wherein the locking ring is movable along the head receiving portion; and wherein the locking ring has an interior surface with a curved portion (8a) which presses against the tapered portion of the exterior surface of the head receiving portion to compress the head receiving portion to clamp the head.
摘要:
A flexible stabilization device for connecting at least two bone anchoring devices (20) which are attached to vertebrae of the spinal column, comprises a flexible rod (22) made of an elastomer material, the rod (22) having a surface in which at least one first recess (12) is provided which is generated by separation of a portion of said elastomer material.
摘要:
A bone anchoring device is provided comprising a bone anchoring element (1,1') having a shaft (2) for anchoring in the bone and a head (3, 3'); a receiving part (5) for coupling a rod (6) to the bone anchoring element, wherein the receiving part comprises a first portion (9) with a first end (9a) and a second end (9b) and a U-shaped recess (12) for receiving the rod, the recess (12) extending from the first end (9a) in the direction of the second end (9b) thereby forming two free legs (12a, 12b) and a second portion (16) at the side of the second end (9b) opposite to the first end for accommodating the head (3, 3'), the second portion having a free end (17) and being flexible so as to allow introduction and clamping of the head; a locking ring (8) embracing the second portion (16); wherein the head (3, 3') is locked by means of exerting pressure with the rod onto the locking ring (8) resulting in compression of the second portion of the receiving part and wherein the locking ring (8) is mounted to the receiving part from the free end (17) of the second portion (16).
摘要:
A bone anchoring device is provided comprising a bone anchoring element (1, 1') having a shaft (2) for anchoring in the bone and a head (3, 3'); a receiving part (5) for coupling a rod (6) to the bone anchoring element, wherein the receiving part comprises a first portion (9) with a first end (9a) and a second end (9b) and a U-shaped recess (12) for receiving the rod, the recess (12) extending from the first end (9a) in the direction of the second end (9b) thereby forming two free legs (12a, 12b) and a second portion (16) at the side of the second end (9b) opposite to the first end for accommodating the head (3, 3'), the second portion having a free end (17) and being flexible so as to allow introduction and clamping of the head; a locking ring (8) embracing the second portion (16); wherein the head (3, 3') is locked by means of exerting pressure with the rod onto the locking ring (8) resulting in compression of the second portion of the receiving part and wherein the locking ring (8) is mounted to the receiving part from the free end (17) of the second portion (16).
摘要:
A receiving part for receiving a rod for coupling the rod to a bone anchoring element is provided, the receiving part including a receiving part body (5, 5') with a rod receiving portion (9) with a channel (12) for receiving the rod, and a head receiving portion (16) for accommodating a head (3, 30) of the bone anchoring element, the head receiving portion having an open end (17) and being flexible so as to allow introduction and clamping of the head, the head receiving portion having an exterior surface with a curved portion; and a locking ring (8, 8', 8") embracing the head receiving portion (16), and wherein the locking ring has an interior surface with a curved portion (8a), which presses against the curved portion of the exterior surface of the head receiving portion (16) to clamp the head.
摘要:
A receiving part is provided for receiving a rod for coupling the rod to a bone anchoring element, the receiving part including a receiving part body (5) with a rod receiving portion (9) with a channel (12) for receiving the rod, and a head receiving portion (16) for accommodating a head (3) of the bone anchoring element, the head receiving portion (16) having an open end (17) and being flexible so as to allow introduction and clamping of the head; a locking ring (8) embracing a head receiving portion, wherein the locking ring exerts a force onto the head receiving portion to lock the head therein; and a pre-locking ring (80) embracing the head receiving portion wherein the pre-locking ring exerts a force onto the head receiving portion so as to clamp the head in a pre-locking condition.
摘要:
A bone anchoring device is provided comprising a bone anchoring element (1, 1') having a shaft (2) for anchoring in the bone and a head (3, 3'); a receiving part (5) for coupling a rod (6) to the bone anchoring element, wherein the receiving part comprises a first portion (9) with a first end (9a) and a second end (9b) and a U-shaped recess (12) for receiving the rod, the recess (12) extending from the first end (9a) in the direction of the second end (9b) thereby forming two free legs (12a, 12b) and a second portion (16) at the side of the second end (9b) opposite to the first end for accommodating the head (3, 3'), the second portion having a free end (17) and being flexible so as to allow introduction and clamping of the head; a locking ring (8) embracing the second portion (16); wherein the head (3, 3') is locked by means of exerting pressure with the rod onto the locking ring (8) resulting in compression of the second portion of the receiving part and wherein the locking ring (8) is mounted to the receiving part from the free end (17) of the second portion (16).
摘要:
A bone anchoring device is provided comprising a bone anchoring element (1,1') having a shaft (2) for anchoring in the bone and a head (3, 3'); a receiving part (5) for coupling a rod (6) to the bone anchoring element, wherein the receiving part comprises a first portion (9) with a first end (9a) and a second end (9b) and a U-shaped recess (12) for receiving the rod, the recess (12) extending from the first end (9a) in the direction of the second end (9b) thereby forming two free legs (12a, 12b) and a second portion (16) at the side of the second end (9b) opposite to the first end for accommodating the head (3, 3'), the second portion having a free end (17) and being flexible so as to allow introduction and clamping of the head; a locking ring (8) embracing the second portion (16); wherein the head (3, 3') is locked by means of exerting pressure with the rod onto the locking ring (8) resulting in compression of the second portion of the receiving part and wherein the locking ring (8) is mounted to the receiving part from the free end (17) of the second portion (16).