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US 10,299,834 B2Granted
Polyaxial screw
AssigneeGlobus Medical, Inc.
InventorsAndrew Iott, Andrew Lee, Lawrence R. Binder, David C. Paul
Life of this patent
Estimating the term…
Abstract
The present invention generally is directed toward a spinal fixation system whereby a coupling element allows the physician to selectively lock or unlock either the connection between the coupling element and a fastener, such as to allow for repositioning of the coupling element, or the connection between the coupling element and an elongate rod. The locking or unlocking of these connections may be made independently and as desired by the physician.
Claims10
A spinal stabilization system comprising:
- a fastener member including a head portion and a shaft portion, wherein the shaft portion extends along a longitudinal axis from the head portion, wherein at least a portion of the shaft portion is tapered;
- a coupling element for receiving the fastener member such that the fastener member is capable of polyaxial movement relative to the coupling element, the coupling element comprising a lower portion and an upper portion, wherein the upper portion of the coupling element includes a first extension and a second extension opposing the first extension, wherein a channel is formed between a first inner surface of the first extension and a second inner surface of the second extension for passing a rod member therethrough, wherein the first extension includes a first end and a second end and a first interior sidewall formed between the first end and the second end, wherein the second extension includes a third end and a fourth end and a second interior sidewall formed between the third end and the fourth end, wherein the first interior sidewall has a first axis that extends substantially in a direction from a top of the coupling element to a bottom of the coupling element;
- a rod member received in the channel between the first and second extensions, wherein the rod member includes a proximal end and a distal end and a body between the proximal end and the distal end that is capable of being received in the channel;
- and
- a locking cap attachable to the coupling element, wherein the locking cap is rotatable relative to the coupling element.
2 more elements
A spinal stabilization system comprising:
- a fastener member including a head portion and a shaft portion, wherein the shaft portion extends along a longitudinal axis from the head portion, wherein at least a portion of the shaft portion is tapered;
- a coupling element for receiving the fastener member such that the fastener member is capable of polyaxial movement relative to the coupling element, the coupling element comprising a lower portion and an upper portion, wherein the upper portion of the coupling element includes a first extension and a second extension opposing the first extension, wherein a channel is formed between a first inner surface of the first extension and a second inner surface of the second extension for passing a rod member therethrough, wherein the first extension includes a first end and a second end and a first interior sidewall formed between the first end and the second end, wherein the second extension includes a third end and a fourth end and a second interior sidewall formed between the third end and the fourth end, wherein the first interior sidewall has a first axis that extends substantially in a direction from a top of the coupling element to a bottom of the coupling element;
- a rod member received in the channel between the first and second extensions, wherein the rod member includes a proximal end and a distal end and a body between the proximal end and the distal end that is capable of being received in the channel;
- and
- a locking cap attachable to the coupling element, wherein the locking cap is rotatable relative to the coupling element.
2 more elements
Dependencies are inferred from the claim text.