WOVEN RETENTION DEVICES, SYSTEMS AND METHODS

摘要

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.

主权项

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; and a 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, and 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.