A woven retention device for interfacing with a bone surface includes interwoven filaments forming a tubular lattice with protuberances distributed on interior and exterior surfaces of the lattice at a predetermined spatial relationship. The protuberances are formed by intersecting interwoven filame
A woven retention device for interfacing with a bone surface includes interwoven filaments forming a tubular lattice with protuberances distributed on interior and exterior surfaces of the lattice at a predetermined spatial relationship. The protuberances are formed by intersecting interwoven filaments. The retention device receives and surrounds a fastener. In a first, relaxed state, the retention device has multiple combinations of filament cross-section geometries at the intersection points, and the multiple combinations of filament cross-section geometries form multiple protuberance thicknesses. In a second state when surrounding at least a portion of the fastener, the retention device distributes pressure from the fastener to multiple points of contact on the exterior surface of the retention device such that a spatial relationship of the protuberances changes as a function of bone density of the bone surface and as a function of an interfacing surface shape of the fastener.
대표청구항▼
1. A woven retention device for interfacing with a bone surface, the retention device comprising: a sleeve body comprising a plurality of interwoven filaments forming a substantially tubular lattice with a plurality of protuberances distributed on an interior surface and an exterior surface of the t
1. A woven retention device for interfacing with a bone surface, the retention device comprising: a sleeve body comprising a plurality of interwoven filaments forming a substantially tubular lattice with a plurality of protuberances distributed on an interior surface and an exterior surface of the tubular lattice at a predetermined spatial relationship, the sleeve body being configured to surround at least a portion of a fastener, each of the plurality of protuberances being formed by an intersection point of two or more of the plurality of interwoven filaments;a proximal end that is proximal to the sleeve body and that is configured to receive at least a portion of the fastener; anda distal end that is distal to the sleeve body,wherein in a first, relaxed state, the sleeve body has a plurality of combinations of filament cross-section geometries at the intersection points, the plurality of combinations of filament cross-section geometries forming a plurality of protuberance thicknesses, a thickness of each protuberance being measured in a radial direction of the sleeve body, andwherein in a second state when surrounding at least a portion of the fastener, the sleeve body is configured to distribute pressure from the fastener to multiple points of contact on the exterior surface such that the spatial relationship of the plurality of protuberances changes as a function of bone density of the bone surface and as a function of an interfacing surface shape of the fastener. 2. The retention device of claim 1, wherein: the interwoven filaments include a first plurality of sets of filaments that runs in a first helical direction and a second plurality of sets of filaments that runs in a direction intersecting the first plurality of sets of filaments, andfor each set of the first and second plurality of sets of filaments, there is a substantially same arrangement of cross-section geometries at every other intersection along that set, the substantially same arrangement being different from an arrangement of cross-section geometries at remaining intersections along that set. 3. The retention device of claim 2, wherein each of the first plurality of sets of filaments comprises a first outer filament and a first inner filament, and each of the second plurality of sets of filaments comprises a second outer filament and a second inner filament. 4. The retention device of claim 3, wherein the one of the first or second outer filaments and the first or second inner filaments is a round monofilament and one of the first or second outer filaments and the first or second inner filaments is a flat multifilament. 5. The retention device of claim 4, wherein the plurality of interwoven filaments follow a two-under/two-over configuration, where at each intersection, the round monofilament either overlies both of the intersecting filaments or is overlain by both of the intersecting filaments and the flat multifilament overlies one of the intersecting filaments and is overlain by another of the intersecting filaments. 6. The retention device of claim 4, wherein the round monofilaments have a diameter in a range of about 0.1 mm-0.4 mm. 7. The retention device of claim 6, wherein the round monofilaments have a diameter of 0.2 mm. 8. The retention device according to claim 1, wherein: the distal end has a distal tip with a first diameter, andthe receiving portion has a second diameter that is greater than the first diameter. 9. The retention device of claim 1, wherein the plurality of interwoven filaments are comprised of alternating round monofilaments and flat multifilaments. 10. The retention device of claim 9, wherein the multifilaments have a linear mass density in a range of about 150-250 denier. 11. The retention device of claim 10, wherein the multifilaments have a linear mass density of about 200 denier. 12. The retention device of claim 1, wherein: the interwoven filaments outline interstices that allow for bone ingrowth, andthe interstices formed by the interwoven filaments comprise differently shaped and differently sized interstices. 13. The retention device of claim 1, wherein the plurality of interwoven filaments are arranged in a three-under/three-over configuration. 14. The retention device according to claim 1, wherein the fastener is a screw having a screw thread and the interior surface is configured to interact with the screw. 15. The retention device of claim 1, wherein the distal end is closed. 16. The retention device of claim 1, wherein in the relaxed state, the interwoven filaments extend around the tubular lattice at an angle of about 45 degrees with respect to a longitudinal direction of the woven retention device. 17. The retention device of claim 1, wherein the distributed protuberances are arranged in a diamond-shaped pattern grid. 18. The retention device of claim 1, wherein: the tubular lattice has an outer radius spanning from a furthest outwardly extending protuberance in the radial direction on the exterior surface of the tubular lattice to a center point of the tubular lattice, the tubular lattice having an inner radius spanning from a furthest inwardly protruding protuberance in the axial direction on the interior surface of the tubular lattice to the center point of the tubular lattice, the tubular lattice having an average radius that is an average between the outer radius and the inner radius, andwherein the outer radius of the tubular lattice is greatest at the intersection points of the thickest filaments. 19. The retention device of claim 18, wherein the average diameter is in a range of about 1.5 mm to 9.0 mm. 20. The retention device of claim 1, wherein the tubular lattice is elastically deformable and wherein, during application of pressure, the tubular lattice is configured to stretch longitudinally while the diameter decreases. 21. A method of dynamically micro-loading a fastener into a bone hole using a woven retention device, the method comprising: inserting a woven retention device into a bone hole, the woven retention device having a substantially homogeneous and uniformly, radially distributed pattern of a plurality of interwoven filaments that result in a first spatial relationship of the filaments, apertures, and protuberances, the protuberances being formed at intersections of the interwoven filaments;applying pressure from an interfacing surface of a fastener to an interior surface of the woven retention device;distributing pressure from the interior surface of the woven retention device to an exterior surface of the woven retention device for transmission of pressure to a bone surface of the bone hole;changing, from the pressure from the fastener, the first spatial relationship of the filaments, apertures, and protuberances of the woven retention device into a second spatial relationship of the filaments, apertures, and protuberances according to a function of bone density and according to a function of a shape of the interfacing surface of the fastener; andinterdigitating the woven retention device and the bone surface of the bone hole. 22. The method of claim 21, wherein the intersections of the interwoven filaments result in at least three different levels of thicknesses of protuberances. 23. The method of claim 21, further comprising stretching the woven retention device in a longitudinal direction while decreasing a diameter of the woven retention device. 24. A woven retention device for interfacing with a bone surface, the retention device comprising: a sleeve body comprising a plurality of interwoven filaments forming a substantially tubular lattice with a plurality of protuberances distributed on an interior surface and an exterior surface of the tubular lattice at a predetermined spatial relationship, the sleeve body being configured to surround at least a portion of a fastener, each of the plurality of protuberances being formed by an intersection point of two or more of the plurality of interwoven filaments;a proximal end that is proximal to the sleeve body and that is configured to receive at least a portion of the fastener; anda distal end that is distal to the sleeve body, the distal end having a distal tip with a first diameter,wherein the receiving portion has a second diameter that is greater than the first diameter,wherein in a first, relaxed state, the sleeve body has a plurality of combinations of filament cross-section geometries at the intersection points, the plurality of combinations of filament cross-section geometries forming a plurality of protuberance thicknesses, a thickness of each protuberance being measured in a radial direction of the sleeve body,wherein in a second state when surrounding at least a portion of the fastener, the sleeve body is configured to distribute pressure from the fastener to multiple points of contact on the exterior surface such that the spatial relationship of the plurality of protuberances changes as a function of bone density of the bone surface and as a function of an interfacing surface shape of the fastener, andwherein the interwoven filaments outline interstices that allow for bone ingrowth, and the interstices formed by the interwoven filaments comprise differently shaped and differently sized interstices.
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