US 11,918,257 B2
Implant system and method for joint fusion
Samuel Fang, Plano, TX (US); and Kevin G. Roberts, Frisco, TX (US)
Assigned to Orthofix US LLC, Lewisville, TX (US)
Filed by Orthofix US LLC, Lewisville, TX (US)
Filed on Mar. 2, 2021, as Appl. No. 17/190,280.
Claims priority of provisional application 62/985,036, filed on Mar. 4, 2020.
Prior Publication US 2021/0275233 A1, Sep. 9, 2021
Int. Cl. A61B 17/86 (2006.01); A61B 17/70 (2006.01); B33Y 80/00 (2015.01)
CPC A61B 17/7055 (2013.01) [A61B 17/863 (2013.01); A61B 17/864 (2013.01); A61B 17/866 (2013.01); B33Y 80/00 (2014.12)] 29 Claims
OG exemplary drawing
 
1. An implant system for joint fusion, comprising:
a distal portion 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;
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 leading end and a 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.