Corporectomy implant

摘要

This Implant (1) includes, in a known manner, two pieces (2, 3) that are telescopically mobile relative to one another and elements (4) for positioning one piece (3) in a particular position relative to the other piece (2), the two pieces (2, 3) being made from a polymer material. At least one of the two pieces (2, 3) has a plurality of micro-cavities (15, 20, 32) over at least one wide portion of its peripheral wall (5); and the implant includes internal communications (16, 21, 33) in its wall(s) (5, 7, 31) including the micro-cavities (15, 20, 32), connecting all or some of the micro-cavities to one another.

主权项

1. A corporectomy implant comprising:
two pieces made of a polymer material that are telescopically mobile relative to one another along a longitudinal axis, a first piece of the two pieces being a base part that has a lower longitudinal end wall and a peripheral side wall defining an internal cavity in the base part, the peripheral side wall extending along the longitudinal axis from the lower longitudinal end wall to an upper longitudinal end wall, a second piece of the two pieces having a head and a longitudinal body depending from the head along the longitudinal axis and configured to be received in the internal cavity of the base part; an actuator that locks one of said two pieces in a determined axial position, along the longitudinal axis, among a plurality of axial positions along the longitudinal axis relative to the other of said two pieces; a plurality of micro-cavities over at least one wide portion of the peripheral side wall of the base part, the micro-cavities being cavities, holes or channels that extend only part-way through a thickness of the peripheral side wall and that have a transverse section relative to a longitudinal direction of telescopic sliding of the two pieces, along the longitudinal axis, with an area smaller than 1 mm2; and a plurality of internal channels in the peripheral side wall passing through and connecting all or some of the plurality of the micro-cavities to one another.