Back to results
US 8,523,922 B2Granted
Dynamic multi-axial fastener
AssigneeWarsaw Orthopedic, Inc.
InventorsJason May, Joshua Simpson
Life of this patent
Estimating the term…
Abstract
A device for attaching an elongated member to a vertebral member and provide for dampened movement of the elongated member. The device may include a receiver that receives an elongated member. The receiver may be movably attached to an anchor that may be attached to a vertebral member. A dampener may be positioned within the receiver. Further, one or more slots may be positioned in the receiver. The dampener and/or slots dampen the translational movement of the receiver and attached elongated member relative to the anchor in first and second directions, and may also buffer forces applied into the spine.
Claims20
A device for attaching an elongated member to a patient comprising;
- an anchor having a head and a shaft;
- a receiver attached to the anchor and including a bottom side that faces towards the patient when implanted and an opposing top side, the receiver including a channel configured to receive the elongated member and an interior space positioned between the channel and the bottom side configured to receive the head of the anchor;
- and
- one or more slots positioned between the channel and the bottom side of the receiver, the one or more slots extending through the receiver and into the interior space and including opposing first and second sides and a closed back side, wherein at least one slot of the one or more slots extends inward from a first end of the receiver and at least one slot of the one or more slots extends inward from an opposing second end of the receiver, the one or more slots that extend inward from the first and second ends are positioned in an overlapping arrangement between the channel and the bottom side of the receiver.
1 more element
A device for attaching an elongated member to a patient comprising;
- an anchor having a head and an outwardly-extending shaft;
- a receiver attached to the anchor and including a bottom side that faces towards the patient when implanted and an opposing top side, a first end and an opposing second end that face in caudal and cephalad directions when implanted, and opposing first and second sides that extend between the first and second ends, the receiver further including a channel configured to receive the elongated member and an interior space positioned between the channel and the bottom side, between the first and second ends, and between the first and second sides, the interior space configured to receive the head of the anchor;
- slots positioned in the receiver with at least one of the slots positioned in the first side and at least one of the slots positioned in the second side, each of the slots including opposing first and second sides and a closed back side;
- and
- a dampener constructed of a flexible material positioned within the interior space, the dampener including a receptacle to receive the head of the anchor, wherein the receiver includes a longitudinal axis that extends through the channel and the interior space, a first distance between the longitudinal axis and the first end being different than a second distance between the longitudinal axis and the second end.
2 more elements
A device for attaching an elongated member to a patient comprising:
- an anchor having a head and a shaft;
- a receiver attached to the anchor and including a bottom side that faces towards the patient when implanted and an opposing top side, the receiver including a channel configured to receive the elongated member and an interior space positioned between the channel and the bottom side configured to receive the head of the anchor;
- a plurality of slots positioned between the channel and the bottom side of the receiver, each of the plurality of slots extending into the interior space and including opposing first and second sides and a closed back side;
- and
- a flexible dampener positioned in the interior space and around the head of the anchor, the dampener positioned to be compressed when the receiver moves in one of a first direction and an opposing second direction relative to the anchor, wherein the dampener includes a bore that extends through the dampener with a first side that faces into the channel and a second side that faces into an opening in the bottom side of the receiver, the head of the anchor positioned in the bore between the first and second sides.
2 more elements
A device for attaching an elongated member to a patient comprising;
- an anchor having a head and a shaft;
- a receiver attached to the anchor and including a bottom side that faces towards the patient when implanted and an opposing top side, the receiver including a channel configured to receive the elongated member and an interior space positioned between the channel and the bottom side configured to receive the head of the anchor;
- and
- one or more slots positioned between the channel and the bottom side of the receiver, the one or more slots extending through the receiver and into the interior space and including opposing first and second sides and a closed back side, wherein the receiver includes opposing first and second walls that extend along opposing sides of the interior space between the channel and the bottom side, each of the first and second walls includes at least one of the one or more slots.
1 more element
Dependencies are inferred from the claim text.