Patent ID: 9381052
Filing Date: 2016-07-05
CPC Classification: A61B

Claim Text:
1. An intramedullary nail for placement in a bone, comprising: a distal portion having a distal end having a first diameter and a proximal end having a second diameter, the second diameter of the proximal end of the distal portion being less than the first diameter of the distal end of the distal portion, the distal end of the distal portion and the proximal end of the distal portion being coaxially disposed about a longitudinal axis of the distal portion, the distal portion also having a first land created at a point where the first diameter of the distal end of the distal portion meets the second diameter of the proximal end of the distal portion; a proximal portion having a proximal end and a distal end, the distal end of the proximal portion telescopically arranged around the proximal end of the distal portion, the first land, and a portion of the distal end of the distal portion, the proximal portion being moveably engaged with the proximal end of the distal portion, the distal end a reversibly compressible bias member disposed in the space between first land and the second land for biasing the distal and proximal portions apart along the longitudinal axis; and an adjusting assembly configured to engage the distal and proximal portions such that actuation of the adjusting assembly results in providing for a selected overall maximum length of the arrangement of the distal and proximal portions along the longitudinal axis, the overall maximum length being selected before the distal and proximal portions are fixated to the bone, and a selected amount of reversible movement along the longitudinal axis between the proximal and distal portions, such that the arrangement of the proximal and distal portions has an uncompressed length equal to the selected overall maximum length and a compressed length that is less than the selected overall maximum length when a compressive force is applied along the longitudinal axis when the nail is fixed within with the bone.