Bone anchor having an integrated stress isolator
First Claim
1. A knotless suture anchoring system for anchoring a length of suture with respect to a body cavity, comprising:
- a bone anchor body comprising at least one rigid anchoring structure to secure the anchor body within the body cavity, the anchor body further comprising a longitudinal bore and a cross-pin extending laterally through the longitudinal bore;
a retention member coupled to the anchor body;
a suture plug for placement in the longitudinal bore to frictionally secure at least one length of suture within the longitudinal bore;
a break notch disposed between the anchor body and the retention member, wherein the break notch and the longitude bore define a relatively low ultimate tensile strength connection between the retention member and bone anchor configured to facilitate a controlled fracture and separation of the anchor body from the retention member; and
a suture cutout disposed on the retention member and in communication with the break notch, operable so that a suture may enter the longitudinal bore and exit the longitudinal bore after being passed around the cross-pin; and
a relief feature positioned through the relatively low ultimate tensile strength connection wherein the relatively low ultimate strength connection defines a circumferential connection, interrupted by the relief feature.
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Accused Products
Abstract
The present disclosure includes a knotless suture anchoring system for anchoring a suture with respect to a body cavity, including a bone anchor body with at least one rigid anchoring structure to secure the anchor body within the body cavity. The anchor body has a longitudinal bore and cross-pin extending across the bore. A retention member is coupled to the anchor body with a break notch therebetween, which may selectively fracture to separate the body from the retention member. Additionally there is a suture cutout on the retention member and a relief feature positioned along the break notch and approximately diametrically opposed from the suture cutout, the relief feature acting to alter the force dissipation along the break notch during the separation of the retention member from the anchor body.
403 Citations
17 Claims
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1. A knotless suture anchoring system for anchoring a length of suture with respect to a body cavity, comprising:
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a bone anchor body comprising at least one rigid anchoring structure to secure the anchor body within the body cavity, the anchor body further comprising a longitudinal bore and a cross-pin extending laterally through the longitudinal bore; a retention member coupled to the anchor body; a suture plug for placement in the longitudinal bore to frictionally secure at least one length of suture within the longitudinal bore; a break notch disposed between the anchor body and the retention member, wherein the break notch and the longitude bore define a relatively low ultimate tensile strength connection between the retention member and bone anchor configured to facilitate a controlled fracture and separation of the anchor body from the retention member; and a suture cutout disposed on the retention member and in communication with the break notch, operable so that a suture may enter the longitudinal bore and exit the longitudinal bore after being passed around the cross-pin; and a relief feature positioned through the relatively low ultimate tensile strength connection wherein the relatively low ultimate strength connection defines a circumferential connection, interrupted by the relief feature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 16, 17)
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11. A knotless suture anchoring system for anchoring a length of suture with respect to a body cavity, comprising:
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a bone anchor body applicator; a bone anchor body comprising at least one rigid anchoring structure to secure the bone anchor body within the body cavity, the bone anchor body further comprising a longitudinal bore and a cross-pin extending laterally through the longitudinal bore; a retention member coupled to the bone anchor body via an annular connection and engaged with the bone anchor body applicator; a suture plug for placement in the longitudinal bore to frictionally secure a suture to the inner wall of the longitudinal bore; a suture plug driver rod, in communication with the suture plug and disposed coaxially within the retention member; a break notch circumferentially disposed around the annular connection, configured so as to reduce a cross sectional thickness of the annular connection and facilitate controlled fracture and separation of the bone anchor body from the retention member; and a suture cutout disposed on the retention member and in communication with the break notch, operable so that a suture may enter and exit the longitudinal bore after being passed around the cross-pin without interrupting the motion of the driver rod; and a relief feature disposed through the annular connection, so as to interrupt the annular connection and alter stress propagation around the annular connection during fracture and separation. - View Dependent Claims (12, 13, 14)
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Specification