US 9,808,299 B2
Bioactive fusion device
Vijay K. Goel, Holland, OH (US); and Anand K. Agarwal, Ottawa Hills, OH (US)
Assigned to The University of Toledo, Toledo, OH (US)
Appl. No. 14/375,942
Filed by The University of Toledo, Toledo, OH (US)
PCT Filed Jan. 31, 2013, PCT No. PCT/US2013/024033
§ 371(c)(1), (2) Date Jul. 31, 2014,
PCT Pub. No. WO2013/116452, PCT Pub. Date Aug. 8, 2013.
Claims priority of provisional application 61/593,270, filed on Jan. 31, 2012.
Prior Publication US 2014/0350608 A1, Nov. 27, 2014
Int. Cl. A61B 17/86 (2006.01); A61F 2/44 (2006.01); A61B 17/70 (2006.01); A61B 17/56 (2006.01)
CPC A61B 17/866 (2013.01) [A61B 17/7064 (2013.01); A61B 17/8625 (2013.01); A61B 17/8685 (2013.01); A61F 2/442 (2013.01); A61F 2/4455 (2013.01); A61B 2017/564 (2013.01); A61F 2/446 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A fusion device comprising:
a screw having a head and a shaft, wherein the screw is formed from a solid body of material having an external helical thread or other similar structure provided thereon; and
a hollow dowel disposed about the shaft of the screw, wherein the dowel is composed of a material selected from the group consisting of a bone-like material, a biocompatible material, a biocompatible polymer, an allograft material, and combinations thereof;
wherein the shaft has an externally threaded portion, the dowel has a proximal end located adjacent to the head of the screw and a distal end, and the distal end of the dowel has an internally threaded portion that cooperates with the externally threaded portion of the shaft;
wherein the dowel has a flange provided between the proximal end and the distal end; and
wherein the flange is radially outwardly moveable from a relaxed orientation to a compressed orientation in response to rotation of the screw relative to the flange, wherein the compressed orientation flattens the flange.