US 12,290,445 B1
Joint implants with bone interface connectors
Fraser M. Smith, Baltimore, MD (US); Marcia Andrews Hart, Baltimore, MD (US); Ryan David Katz, Baltimore, MD (US); and Allan C. Doyle, Baltimore, MD (US)
Assigned to Djit Medtech, Inc., Baltimore, MD (US)
Filed by Djit Medtech, Inc., Baltimore, MD (US)
Filed on Sep. 5, 2024, as Appl. No. 18/826,063.
Claims priority of provisional application 63/642,546, filed on May 3, 2024.
Int. Cl. A61F 2/30 (2006.01); A61F 2/38 (2006.01)
CPC A61F 2/30771 (2013.01) [A61F 2002/30233 (2013.01); A61F 2002/30324 (2013.01); A61F 2002/30331 (2013.01); A61F 2002/30462 (2013.01); A61F 2002/30492 (2013.01); A61F 2002/3085 (2013.01); A61F 2/3836 (2013.01)] 31 Claims
OG exemplary drawing
 
1. A joint implant sized and configured to be implanted in a joint of a subject, the joint implant comprising:
a proximal joint implant element having a proximal curved interface surface and an adjacent proximal base portion having a hollow interior;
a distal joint implant element rotatably coupled to the proximal joint implant element, and having a distal curved interface surface facing the proximal curved interface surface, the distal joint implant element being supported such that the distal curved interface surface and the proximal curved interface surface interface with, and roll relative to, one another through a range of motion of the proximal and distal joint implant elements, wherein the distal joint implant element further comprises a distal base portion having a hollow interior;
a first filament segment extending from an attachment point on the proximal joint implant element to an attachment point on the distal joint implant element;
a second filament segment extending from an attachment point on the distal joint implant element to an attachment point on the proximal joint implant element, wherein the second filament segment crosses the first filament segment at a location between the proximal joint implant element and the distal joint implant element;
at least one proximal groove formed on the proximal curved interface surface, wherein the at least one proximal groove is sized and configured to accommodate a portion of at least one of the first or second filament segments;
at least one distal groove formed on the distal curved interface surface, wherein the at least one distal groove is sized and configured to accommodate a portion of at least one of the first or second filament segments;
a proximal tensioning element positioned in the hollow interior of the proximal base portion, and configured to tension at least one of the first or second filament segments;
a distal tensioning element positioned in the hollow interior of the distal base portion, and configured to tension at least one of the first or second filament segments;
a proximal bone interface connector supported by the proximal tensioning element, and configured to be implanted in a first bone of a subject; and
a distal bone interface connector supported by the distal tensioning element, and configured to be implanted in a second bone of a subject.