Fixation device with magnesium core

摘要

A fixation device comprises a biodegradable inner core extending along a longitudinal axis from a distal tip to a proximal end in combination with a sleeve surrounding the core along a portion of a length thereof and comprising a thermoplastic polymer formed of a material which softens and expands into surrounding bone tissue when activated by an energy source.

主权项

1. A fixation device, comprising:
a biodegradable inner core extending along a longitudinal axis, such that the inner core defines a tapered distal tip spaced from a proximal end along the longitudinal axis, wherein the tapered distal tip is configured to break a cortical portion of a bone when the fixation device is inserted into the bone along the longitudinal axis; and a sleeve defining a proximal end and a distal end opposite the proximal end, such that in an assembled configuration, the sleeve surrounds the core along a portion of a length thereof such that the tapered distal tip of the biodegradable inner core extends distally past the distal end of the sleeve, the sleeve comprising a thermoplastic polymer formed of a material which softens and expands into surrounding bone tissue when activated by an energy source, wherein the fixation device is configured to be inserted into the bone in the assembled configuration.