Woven retention devices, systems and methods

Abstract

A woven retention device for interfacing with a bone surface includes a sleeve body that can surround a fastener, a proximal end receiving the fastener, and a distal end. The sleeve body includes interwoven monofilaments forming a tubular lattice with protuberances distributed on interior and exterior surfaces of the lattice at a predetermined spatial relationship. In a first state of the sleeve body, the protuberances are arranged in a predetermined spatial relationship and each protuberance has a thickness measured in a radial direction of the sleeve body. In a second state when a fastener is inserted into the tubular lattice, pressure from the fastener is transmitted to the tubular lattice such that the spatial relationship of the protuberances changes according to a function of bone density and according to a function of an interfacing surface shape of the fastener.

We claim: 
     
         1 . A woven retention device for interfacing with a bone surface, the retention device comprising:
 a sleeve body comprising a plurality of interwoven monofilaments that form 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;   a proximal end that is proximal to the sleeve body and that is configured to receive at least a portion of the fastener; and   a distal end that is distal to the sleeve body,   wherein in a first state, the plurality of protuberances are arranged in a predetermined spatial relationship and each of the plurality of protuberances has a thickness, the thickness of each protuberance being measured in a radial direction of the sleeve body, and   wherein in a second state when a fastener is inserted into the tubular lattice, pressure from the fastener is transmitted to the tubular lattice such that the spatial relationship of the protuberances changes according to a function of bone density and according to a function of an interfacing surface shape of the fastener.   
     
     
         2 . The retention device of  claim 1 , wherein the plurality of interwoven monofilaments includes a first plurality of monofilaments that runs in a first helical direction and a second plurality of monofilaments that runs in a direction intersecting the first plurality of monofilaments. 
     
     
         3 . The retention device of  claim 1 , wherein:
 the plurality of interwoven monofilaments comprises a plurality of sets of interwoven monofilaments, the plurality of interwoven monofilaments includes a first plurality of monofilaments that runs in a first helical direction and a second plurality of monofilaments that runs in a direction intersecting the first plurality of monofilaments, and   for each set of the first and second plurality of monofilaments, 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.   
     
     
         4 . The retention device according to  claim 1 , wherein:
 the distal end has a distal tip with a first diameter, and   the receiving portion has a second diameter that is greater than the first diameter.   
     
     
         5 . The retention device of  claim 2 , further comprising a first plurality of multifilaments that runs in the first helical direction and a second plurality of multifilaments that runs in the second direction, the first plurality of monofilaments and the first plurality of multifilaments forming a first plurality of sets of filaments and the second plurality of monofilaments and the second plurality of multifilaments forming a second plurality of sets of filaments,
 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.   
     
     
         6 . The retention device of  claim 5 , wherein the first plurality of monofilaments are thinner in diameter than the second plurality of monofilaments. 
     
     
         7 . The retention device of  claim 6 , wherein the plurality of interwoven filaments follow a two-under/two-over configuration, where at each intersection, the second plurality of monofilaments either overlies both of the intersecting monofilaments or is overlain by both of the intersecting monofilaments and the second plurality of monofilaments overlies one of the intersecting filaments and is overlain by the other of the intersecting filaments. 
     
     
         8 . The retention device of  claim 2 , wherein the first plurality of monofilaments have a diameter in a range of about 0.1 mm-0.4 mm. 
     
     
         9 . The retention device of  claim 8 , wherein the first plurality of monofilaments have a diameter of 0.2 mm. 
     
     
         10 . The retention device of  claim 1 , wherein the plurality of interwoven filaments comprise a plurality of flat multifilaments. 
     
     
         11 . The retention device of  claim 1 , wherein the interwoven filaments outline interstices that allow for bone ingrowth. 
     
     
         12 . The retention device of  claim 1 , wherein the interwoven filaments outline interstices that allow for bone ingrowth, and the interstices formed by the intersecting 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 two-under/two-over configuration. 
     
     
         14 . The retention device of  claim 1 , wherein the plurality of interwoven filaments are arranged in a one-under/one-over configuration. 
     
     
         15 . The retention device of  claim 1 , wherein the plurality of interwoven filaments are arranged in a two-over/one-under configuration. 
     
     
         16 . The retention device of  claim 1 , wherein the plurality of interwoven filaments are arranged in a three-under/three-over configuration. 
     
     
         17 . 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. 
     
     
         18 . The retention device of  claim 1 , wherein the distal end is closed. 
     
     
         19 . The retention device of  claim 2 , 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. 
     
     
         20 . The retention device of  claim 1 , wherein the distributed protuberances are arranged in a diamond-shaped pattern grid. 
     
     
         21 . The retention device of  claim 1 , wherein:
 the tubular lattice has an outer radius spanning from an outwardly extending protuberance 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 an inwardly protruding protuberance 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.   
     
     
         22 . The retention device of  claim 21 , wherein the tubular lattice has an average diameter that is in a range of about 1.5 mm to 9.0 mm. 
     
     
         23 . The retention device of  claim 1 , wherein the woven retention device has a length in a range from about 30 mm to 40 mm. 
     
     
         24 . The retention device of  claim 1 , wherein when the fastener applies pressure to the inner surface, the pressure is transmitted to protuberances on the outer surface adjacent to the protuberance on the outer surface that inner surface and exerting pressure on bone material. 
     
     
         25 . The retention device of  claim 1 , further comprising the fastener. 
     
     
         26 . The retention device of  claim 1 , wherein in the second state when the sleeve body distributes pressure from the fastener on the interior surface to the exterior surface, the fastener requires at least 10% more pullout force to pull the fastener out of the bone with the retention device than the pullout force required for a fastener in the bone hole without the retention device. 
     
     
         27 . A retention device for interfacing with a bone surface, the retention device comprising:
 a substantially tubular lattice of intersecting fibers that can be configured to be inserted into a bone tunnel, the tubular lattice including a proximal end and a distal end, the proximal end having a receiving portion that can be configured to receive a fastener along a longitudinal axis of the retention device,   wherein:   the tubular lattice includes an inner surface that has a distributed interface with protruding and recessed portions that are configured to interact with an outer surface of the fastener, the tubular lattice includes an outer surface that has protruding and recessed multiple points of contact configured to interact with an interior bone surface, and   the tubular lattice has a degree of stability that maintains a three-dimensional structure of the tubular lattice and has a degree of flexibility, the degree of stability and flexibility allowing for the distributed interface of the inner surface to distribute applied pressure to the protruding and recessed multiple points of contact of the outer surface.   
     
     
         28 . The retention device of  claim 1 , wherein:
 the plurality of intersecting fibers includes sets of a first plurality of monofilaments that runs in a first helical direction and a second plurality of monofilaments that runs in a direction intersecting the first plurality of monofilaments, and   for each set of the first and second plurality of monofilaments, 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.   
     
     
         29 . The retention device of  claim 26 , wherein the first plurality of monofilaments are thinner in diameter than the second plurality of monofilaments. 
     
     
         30 . The retention device of  claim 27 , wherein the first plurality of monofilaments have a diameter in a range of about 0.1 mm-0.4 mm. 
     
     
         31 . The retention device according to  claim 26 , wherein:
 the distal end has a distal tip with a first diameter, and   the receiving portion has a second diameter that is greater than the first diameter.   
     
     
         32 . The retention device of  claim 29 , wherein the intersecting fibers follow a two-under/two-over configuration, where at each intersection, the second plurality of monofilaments either overlies both of the intersecting monofilaments or is overlain by both of the intersecting monofilaments and the second plurality of monofilaments overlies one of the intersecting filaments and is overlain by the other of the intersecting filaments. 
     
     
         33 . The retention device of  claim 24 , wherein:
 the intersecting fibers outline interstices that allow for bone ingrowth, and   the interstices formed by the intersecting fibers comprise differently shaped and differently sized interstices.   
     
     
         34 . The retention device of  claim 25 , wherein in the relaxed state, the intersecting fibers extend around the tubular lattice at an angle of about 45 degrees with respect to a longitudinal direction of the woven retention device. 
     
     
         35 . The retention device of  claim 24 , 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, and   wherein the outer radius of the tubular lattice is greatest at the intersection point of two of the thick monofilaments.   
     
     
         36 . The retention device of  claim 24 , wherein when the fastener applies pressure to the inner surface, the pressure is transmitted to protuberances on the outer surface adjacent to the protuberance on the outer surface that inner surface and exerting pressure on bone material. 
     
     
         37 . The retention device of  claim 24 , wherein in the second state when the sleeve body distributes pressure from the fastener on the interior surface to the exterior surface, the fastener requires at least 10% more pullout force to pull the fastener out of the bone with the retention device than the pullout force required for a fastener in the bone hole without the retention device. 
     
     
         38 . A method of inserting a woven retention device, comprising:
 inserting the woven retention device into a bone hole; and   distributing pressure from a fastener being inserted into the woven retention device from an interior surface of the woven retention device to an exterior surface of the woven retention device for transmission of pressure to bone surface of the bone hole according to a function of bone density and according to a function of an interfacing surface shape of the fastener,   wherein the pressure from the fastener changes the spatial relationship of protuberances on the interior surface of the woven retention device, and   wherein the pressure from the interior surface changes the spatial relationship of protuberances of the exterior surface of the woven retention device.   
     
     
         39 . The method of  claim 36 , wherein the fastener is inserted into the woven retention device after the woven retention device has been inserted into the bone hole. 
     
     
         40 . The method of  claim 36 , wherein the fastener is inserted into the woven retention device before the woven retention device has been inserted into the bone hole. 
     
     
         41 . The method of  claim 36 , wherein the pressure transmitted to the bone surface is adapted to change shape of the bone surface of the bone hole. 
     
     
         42 . The method of  claim 36 , further comprising providing the woven retention device of  claim 1 . 
     
     
         43 . The method of  claim 36 , wherein the distributing pressure step comprises dynamic micro-loading of the woven retention device based on differences in loading patterns of the woven retention device and the interfacing surface shape of the fastener. 
     
     
         44 . The method of  claim 36 , further comprising:
 elongating or constricting the woven retention device for fitting the woven retention device inside the bone hole; and   expanding the woven retention device upon entering the bone hole.   
     
     
         45 . The retention device according to  claim 1 , wherein the plurality of sets of interwoven monofilaments having a plurality of different diameters. 
     
     
         46 . The retention device according to  claim 1 , wherein the sleeve body has a plurality of combinations of filament cross-section geometries at the intersection points forming the protuberances. 
     
     
         47 . The retention device according to  claim 46 , wherein the plurality of combinations of filament cross-section geometries form a plurality of protuberance thicknesses. 
     
     
         48 . The retention device according to  claim 1 , wherein the plurality of monofilaments have a same diameter. 
     
     
         49 . The retention device according to  claim 48 , wherein the same diameter is in a range of about 0.1 mm-0.4 mm. 
     
     
         50 . The retention device according to  claim 49 , wherein the same diameter is 0.2 mm.