US 12,239,538 B2
System and method for treatment and prevention of periprosthetic joint infections
Brian de Beaubien, Fenton, MI (US); Jude Paganelli, Coronado, CA (US); Daniel Pflaster, Charlotte, VT (US); Daivon Deans, San Diego, CA (US); Ryan Watson, Boulder, CO (US); and Brian Bowman, Carlsbad, CA (US)
Assigned to Osteal Therapeutics, Inc., Dallas, TX (US)
Filed by Osteal Therapeutics, Inc., San Clemente, CA (US)
Filed on Aug. 13, 2021, as Appl. No. 17/401,843.
Claims priority of provisional application 63/065,413, filed on Aug. 13, 2020.
Prior Publication US 2022/0047392 A1, Feb. 17, 2022
Int. Cl. A61F 2/30 (2006.01); A61F 2/36 (2006.01); A61F 2/38 (2006.01); A61F 2/40 (2006.01); A61M 1/00 (2006.01)
CPC A61F 2/30724 (2013.01) [A61F 2/36 (2013.01); A61F 2/389 (2013.01); A61F 2/4014 (2013.01); A61M 1/90 (2021.05); A61F 2002/3006 (2013.01); A61F 2002/30672 (2013.01); A61F 2002/30677 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A spacer system for treating a patient presenting with a periprosthetic joint infection, the spacer system comprising:
a spacer configured for placement between a first implant and a second implant of a permanent joint prosthesis; and
a catheter, wherein the spacer and catheter are configured for detachable coupling;
wherein the spacer comprises:
a first surface having a convex shape configured for engagement with a corresponding concave shape of the first implant;
a second surface having a concave shape configured for engagement with a corresponding convex shape of the second implant,
an exposed surface disposed between the first surface and the second surface;
a plurality of internal channels extending within the spacer, the plurality of internal channels configured in an array about a center axis of the spacer; and
an inlet through the exposed surface that is configured to detachably couple to the catheter to receive a treatment fluid, the inlet coaxial with a first internal channel of the plurality of internal channels,
wherein the exposed surface of the spacer comprises a first plurality of outlets in fluid communication with the inlet, such that, when the spacer is implanted in the patient, treatment fluid delivered into the inlet flows into the first internal channel of the plurality of internal channels toward the center axis before exiting out through the first plurality of outlets into a joint space between the first implant and the second implant.