US 11,925,561 B2
Methods and apparatuses for attachment of porous coatings to implants and products thereof
Marcus L. Scott, Memphis, TN (US); Vivek D. Pawar, Germantown, TN (US); Carolyn L. Weaver, Collierville, TN (US); Daniel A Heuer, Santa Rosa, CA (US); Roger R. Dees, Jr., Drummonds, TN (US); Forrest A. James, Oakland, TN (US); and Matthew J. Quick, Memphis, TN (US)
Assigned to Smith & Nephew, Inc., Memphis, TN (US); Smith & Nephew Orthopaedics AG, Zug (CH); and Smith & Nephew Asia Pacific Pte. Limited, Singapore (SG)
Filed by Smith & Nephew, Inc., Memphis, TN (US); Smith & Nephew Orthopaedics AG, Zug (CH); and Smith & Nephew Asia Pacific Pte. Limited, Singapore (SG)
Filed on Aug. 1, 2022, as Appl. No. 17/878,196.
Application 17/878,196 is a continuation of application No. 16/987,579, filed on Aug. 7, 2020, granted, now 11,446,150.
Claims priority of provisional application 63/041,405, filed on Jun. 19, 2020.
Claims priority of provisional application 62/984,015, filed on Mar. 2, 2020.
Claims priority of provisional application 62/888,874, filed on Aug. 19, 2019.
Prior Publication US 2022/0362024 A1, Nov. 17, 2022
Int. Cl. A61F 2/30 (2006.01); A61F 2/38 (2006.01)
CPC A61F 2/3094 (2013.01) [A61F 2002/30784 (2013.01); A61F 2002/3093 (2013.01); A61F 2002/30967 (2013.01); A61F 2002/3863 (2013.01); A61F 2310/00023 (2013.01); A61F 2310/00029 (2013.01); A61F 2310/00089 (2013.01); A61F 2310/00131 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A biocompatible alloy implant comprising a biocompatible alloy implant body, the biocompatible alloy implant body comprising:
one or more articulating implant body surfaces,
one or more preformed porous metallic ingrowth structures diffusion bonded to one or more bone-interfacing alloy surfaces of the biocompatible alloy implant body,
a collapsible metallic layer placed between the one or more preformed porous metallic ingrowth structures and the one or more bone-interfacing alloy surfaces of the biocompatible alloy implant body, wherein the collapsible metallic layer is configured to collapse/crumble under compression thereby creating an interface, and
a diffusion-hardened layer on the one or more articulating implant body surfaces,
wherein the one or more articulating implant body surfaces correspond to one or more oxidized surfaces of the biocompatible alloy of the biocompatible alloy implant body,
wherein the one or more preformed porous metallic ingrowth structures comprises (a) a porous metallic pad or (b) a nonporous metallic base and a porous metallic pad.