Patent ID: 11918257
Assignee: ORTHOFIX US LLC
Field: Medical technology (Instruments)
Classification: CPC A  B  Y | IPC A  B

Claim 25:
26. An implant system for joint fusion, comprising:
a distal portion having a hollow bore and having a thread having a first thread minor, a first thread major, and a first pitch, the distal portion also having a reverse cut, helical fenestration formed through the thread and intersecting the hollow bore;
a middle portion adjacent the distal portion, the middle portion being devoid of threads and comprising a porous outer surface structure to promote bony integration, the porous outer surface structure having a porosity with a range of about 30-80% porous, the porous outer surface structure having a leading end and a trailing end, and being substantially cylindrically shaped leading end to the trailing end, the leading end having a diameter larger than the first thread minor; and
a proximal portion adjacent the middle portion, the proximal portion comprising a proximal thread having a second thread minor, a second thread major, and a second pitch, the second thread minor being substantially the same as the trailing end of the middle portion, the second thread minor being tapered differently than the second thread major, the second pitch being in a range of about 60-90% of the first pitch of the thread of the distal portion,
the middle portion and the proximal portion having a plurality of linear slots radially disposed therein in communication with the hollow bore, each slot of the plurality of linear slots extending in a substantially axial direction.