Absorbable bone anchor
First Claim
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1. A bone anchor for anchoring tissue to bone, comprising:
- an elongate body defined by a longitudinal axis, a first leading end and a second trailing end, the elongate body comprising two opposed surfaces between the first and second ends, and a plurality of sidewalls extending between the two opposed surfaces, a flared portion formed on the second end and extending from one of the plurality of sidewalls, the flared portion being adapted to engage and anchor into bone, and at least one suture channel formed in the elongate body for passage of a suture strand therethrough, the suture channel extending between the two opposed surfaces and being obliquely angled with respect to the longitudinal axis.
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Abstract
A bone anchor is provided that can toggle in two planes for secure anchorage within a bone cavity. The bone anchor includes an oblique suture channel configured such that a suture strand extending through the bone anchor can be tensioned to toggle the bone anchor inside the bone cavity. The suture strand can be located on the same side of the anchor body to maximize the area of the anchor surface which engages bone, resulting in increased engagement into bone and resistance to tensile forces.
284 Citations
20 Claims
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1. A bone anchor for anchoring tissue to bone, comprising:
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an elongate body defined by a longitudinal axis, a first leading end and a second trailing end, the elongate body comprising two opposed surfaces between the first and second ends, and a plurality of sidewalls extending between the two opposed surfaces, a flared portion formed on the second end and extending from one of the plurality of sidewalls, the flared portion being adapted to engage and anchor into bone, and at least one suture channel formed in the elongate body for passage of a suture strand therethrough, the suture channel extending between the two opposed surfaces and being obliquely angled with respect to the longitudinal axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A system for anchoring tissue to bone, comprising:
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a bone anchor comprising an elongate body defined by a longitudinal axis, a first leading end and a second trailing end, the elongate body including;
two opposed surfaces between the first and second ends, and a plurality of sidewalls extending between the two opposed surfaces, a flared portion formed on the second end and extending from one of the plurality of sidewalls, the flared portion being adapted to engage and anchor into bone, and at least one suture channel formed in the elongate body for passage of a suture strand therethrough, the suture channel extending between the two opposed surfaces and being obliquely angled with respect to the longitudinal axis;
a loop of suture thread adapted to be attached to the bone anchor; and
a suture needle having a first, tissue penetrating end and a second, trailing end, wherein the second, trailing end of the suture needle is attached to the loop of suture thread.
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19. A method for anchoring tissue to bone, comprising:
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forming a bone cavity within a bony structure;
providing a bone anchor comprising an elongate body defined by a longitudinal axis, a first leading end and a second trailing end, the elongate body including two opposed surfaces between the first and second ends, and a plurality of sidewalls extending between the two opposed surfaces, a flared portion formed on the second end and extending from one of the plurality of sidewalls, and at least one suture channel formed in the elongate body for passage of a suture strand therethrough, the suture channel extending between the two opposed surfaces and being obliquely angled with respect to the longitudinal axis, the bone anchor further including a loop of suture thread attached to the bone anchor, and a suture needle having a first, tissue penetrating end and a second, trailing end, wherein the second, trailing end of the suture needle is attached to the loop of suture thread;
threading the needle through a free end of the tissue;
attaching an inserter tool to the bone anchor;
inserting the bone anchor into the bone cavity;
removing the inserter tool;
applying tension on the suture thread to toggle the bone anchor and effect penetration into the bone cavity; and
tying the suture thread to bring the free end of the tissue proximate to the bony structure. - View Dependent Claims (20)
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Specification