Oblong cross-sectional tissue fixation peg

摘要

Disclosed are fixation devices that can be utilized to approximate and hold a soft tissue in, at, or near a bony insertion site. Disclosed devices can define an oblong cross-section, and can include ribs defining sharp edges on the periphery of one aspect of the cross section that can tightly fix the device to surrounding bone so as to avoid pull out of the device. Devices can also include ribs defining rounded ridges on the periphery of a second, perpendicular aspect of the cross section that can allow soft tissue or a portion of an approximation device, for instance a soft tissue graft or cellular scaffolding material, to be fixed within a bone without damage to the soft tissue.

主权项

1. A tissue fixation device comprising
a proximal end and a distal end and defining a longitudinal axis from the proximal end to the distal end, the tissue fixation device further defining a first cross sectional area along at least a portion of and perpendicular to the longitudinal axis, the first cross sectional area defining
a periphery and including a first aspect having a first length and a second aspect that is perpendicular to the first aspect and having a second length,wherein the first length is greater than the second length such that the cross sectional area is oblong; and further comprising a first rib extending from a first portion of the periphery of the first cross sectional area, the first portion of the periphery including a terminus of the first aspect, wherein the first rib defines a sharp edge, the device also comprising a second rib distinct from the first rib and in a same cross sectional plane of the device as the first rib and extending from a second portion of the periphery of the first cross sectional area, the second portion of the periphery including a terminus of the second aspect, wherein the second rib defines a rounded ridge.