IP Library › Granted Patent US 12,611,310
Granted Patent B2
US 12,611,310 · App. 17/868,971 · Granted Apr 28, 2026

Modular artificial knee system

Inventor: Jonathan P. Garino (Villanova, PA)
A61F2/3868A61F2/3836A61F2/3859A61F2/3886A61F2002/30383A61F2002/30523A61F2002/30604A61F2002/30607
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Quick Facts
Patent No.
US 12,611,310
App. No.
17/868,971
Granted
Apr 28, 2026
Kind
B2
Abstract

A modular knee joint prosthesis is configured to move between an extended position and a flexion position. The modular knee joint prosthesis includes a femoral component that is configured to be mounted to a femur. The femoral component has a first cutout or opening in a central region thereof for receiving a femoral insert. The modular knee joint prosthesis also includes a tibial component that is configured to (i) be mounted either directly or indirectly to a tibia, and (ii) engage the femoral component. The tibial component has a second cutout or opening in a central region thereof for receiving a tibial insert. A kit includes the modular knee joint prosthesis, at least two of the femoral inserts having different geometries, and at least two of the tibial inserts having different geometries.

Claims (30)

1 . A modular knee joint prosthesis configured to move between an extended position and a flexion position, the modular knee joint prosthesis comprising:

a femoral component configured to be mounted to a femur, the femoral component having (i) condyles and (ii) a first cutout or opening located between the condyles,

a femoral insert removably mounted within the first cutout or opening of the femoral component by a first sliding rail and slot engagement, the first sliding rail and slot engagement including either elongated rails or elongated slots disposed on opposing sides of the femoral insert and extending in an anterior-posterior direction when the modular knee joint prosthesis is maintained in the extended position,

a tibial component configured to (i) be mounted either directly or indirectly to a tibia, and (ii) engage the femoral component,

the tibial component having (i) bearing surfaces for directly engaging the condyles of the femoral component, and (ii) a second cutout or opening located between the bearing surfaces,

a tibial insert removably mounted within the second cutout or opening of the tibial component by a second sliding rail and slot engagement, the second sliding rail and slot engagement including either elongated rails or elongated slots disposed on opposing sides of the tibial insert and extending in the anterior-posterior direction when the modular knee joint prosthesis is maintained in the extended position, and

a femoral gear disposed on the femoral insert and a tibial gear disposed on the tibial insert, wherein the femoral and tibial gears are configured to be meshed together.

2 . The modular knee joint prosthesis of claim 1 , wherein the femoral and tibial gears are configured to be meshed together in both the extended and flexion positions.

3 . The modular knee joint prosthesis of claim 1 , wherein the femoral and tibial gears have gear teeth.

4 . The modular knee joint prosthesis of claim 1 , wherein the tibial component comprises an articular insert, and the second cutout or opening is formed in the articular insert, and wherein the articular insert is configured to be sandwiched between the femoral component and a tibial baseplate that is mounted directly to the tibia.

5 . A kit comprising the modular knee joint prosthesis of claim 1 and further comprising at least two of the femoral inserts having different geometries, and at least two of the tibial inserts having different geometries.

6 . A modular knee joint prosthesis configured to move between an extended position and a flexion position, the modular knee joint prosthesis comprising:

a femoral component configured to be mounted to a femur, the femoral component having (i) condyles and (ii) a first cutout or opening located between the condyles,

a femoral insert mounted within the first cutout or opening of the femoral component, the femoral insert having a femoral gear,

a tibial component configured to (i) be mounted either directly or indirectly to a tibia, and (ii) engage the femoral component, the tibial component having (i) bearing surfaces for directly engaging the condyles of the femoral component, and (ii) a second cutout or opening located between the bearing surfaces,

a tibial insert mounted within the second cutout or opening of the tibial component, the tibial insert having a tibial gear, wherein the femoral and tibial gears are configured to be meshed together,

wherein at least one of the gears follows a helical trajectory to cause movement of the tibial component in either a medial or lateral direction as the knee joint prosthesis is moved to the extended position.

7 . A modular knee joint prosthesis configured to move between an extended position and a flexion position, the modular knee joint prosthesis comprising:

a femoral component configured to be mounted to a femur, the femoral component having (i) condyles and (ii) a first cutout or opening located between the condyles, and

a femoral insert mounted within the first cutout or opening of the femoral component, the femoral insert having a blade protruding therefrom,

a tibial component configured to (i) be mounted either directly or indirectly to a tibia, and (ii) engage the femoral component, the tibial component having (i) bearing surfaces for directly engaging the condyles of the femoral component, and (ii) a second cutout or opening located between the bearing surfaces, and

a tibial insert mounted within the second cutout or opening of the tibial component, the tibial insert having a slot disposed therein, wherein the blade is configured to be positioned within the slot in both the extended and flexion positions,

wherein the blade follows a helical trajectory to cause movement of the tibial component in either a medial or lateral direction as the knee joint prosthesis is moved to the extended position.

8 . A modular knee joint prosthesis configured to move between an extended position and a flexion position, the modular knee joint prosthesis comprising:

a femoral component configured to be mounted to a femur, the femoral component having (i) condyles and (ii) a first cutout or opening located between the condyles,

a femoral insert removably mounted within the first cutout or opening of the femoral component by a first sliding rail and slot engagement, the first sliding rail and slot engagement including either elongated rails or elongated slots disposed on opposing sides of the femoral insert and extending in an anterior-posterior direction when the modular knee joint prosthesis is maintained in the extended position,

a tibial component configured to (i) be mounted either directly or indirectly to a tibia, and (ii) engage the femoral component,

the tibial component having (i) bearing surfaces for directly engaging the condyles of the femoral component, and (ii) a second cutout or opening located between the bearing surfaces,

a tibial insert removably mounted within the second cutout or opening of the tibial component by a second sliding rail and slot engagement, the second sliding rail and slot engagement including either elongated rails or elongated slots disposed on opposing sides of the tibial insert and extending in the anterior-posterior direction when the modular knee joint prosthesis is maintained in the extended position, and

a post protruding from the tibial insert and an opening disposed on the femoral insert, wherein the post is configured to be positioned within the opening in both the extended and flexion positions, wherein the post protrudes from a concave surface formed on the tibial insert, and the opening is disposed on a convex surface formed on the femoral insert, wherein the concave surface is configured to be positioned against the convex surface in both the extended and flexion positions.

Continuity (2)
Continuation 17167194 · Feb 4, 2021
Related Publication 20220354657A1 · Nov 10, 2022
References Cited (78)
US 3969773A · Menschik · 1976 [cited by applicant]
US 5011496A · Forte et al. · 1991 [cited by applicant]
US 5871543A · Hofmann · 1999 [cited by applicant]
US 5935133A · Wagner et al. · 1999 [cited by applicant]
US 6325828B1 · Dennis et al. · 2001 [cited by applicant]
US 6517504B1 · Postelmans · 2003 [cited by applicant]
US 6629999B1 · Serafin · 2003 [cited by applicant]
US 6660039B1 · Evans et al. · 2003 [cited by applicant]
US 6905513B1 · Metzger · 2005 [cited by applicant]
US 8409293B1 · Howard et al. · 2013 [cited by applicant]
US 8480752B2 · Dun · 2013 [cited by applicant]
US 8858207B2 · Evans · 2014 [cited by applicant]
US 9387084B2 · Masini et al. · 2016 [cited by applicant]
US 9861484B2 · Sanford et al. · 2018 [cited by applicant]
US 9861489B2 · Siebel · 2018 [cited by applicant]
US 10292826B2 · Wyss et al. · 2019 [cited by applicant]
US 10682236B2 · Boettiger · 2020 [cited by applicant]
US 11419731B1 · Garino · 2022 [cited by examiner]
US 20030199985A1 · Masini · 2003 [cited by applicant]
US 20040002767A1 · Wyss · 2004 [cited by examiner]
US 20050187635A1 · Metzger · 2005 [cited by applicant]
US 20050209702A1 · Todd et al. · 2005 [cited by applicant]
US 20090326668A1 · Dun · 2009 [cited by applicant]
US 20100016979A1 · Wyss et al. · 2010 [cited by applicant]
US 20100174378A1 · Metzger · 2010 [cited by examiner]
US 20120095563A1 · Sanford et al. · 2012 [cited by applicant]
US 20120221113A1 · Katrana et al. · 2012 [cited by applicant]
US 20140052265A1 · Slocum, Jr. et al. · 2014 [cited by applicant]
US 20150182344A1 · McKinnon et al. · 2015 [cited by applicant]
US 20150190236A1 · McMinn · 2015 [cited by applicant]
US 20170252173A1 · Garino · 2017 [cited by applicant]
US 20170333193A1 · Miura et al. · 2017 [cited by applicant]
US 20180243100A1 · Boettiger · 2018 [cited by applicant]
US 20180325681A1 · Lee et al. · 2018 [cited by applicant]
US 20190029830A1 · Nguyen et al. · 2019 [cited by applicant]
US 20190029847A1 · Nguyen et al. · 2019 [cited by applicant]
US 20190091030A1 · Incavo · 2019 [cited by examiner]
US 20190336297A1 · Reeder · 2019 [cited by examiner]
US 20200281732A1 · Garino · 2020 [cited by applicant]
US 20210007855A1 · Collazo et al. · 2021 [cited by applicant]
US 20220183856A1 · Mahfouz · 2022 [cited by applicant]
US 20220241081A1 · Garino · 2022 [cited by applicant]
US 20220354657A1 · Garino · 2022 [cited by applicant]
US 20240173138A1 · Garino · 2024 [cited by applicant]
US 20250255727A1 · Slocum, Jr. et al. · 2025 [cited by applicant]
CN 109528362A · 2019 [cited by applicant]
DE 69305434T2 · 1997 [cited by applicant]
EP 0103697A1 · 1984 [cited by applicant]
EP 0577529A1 · 1994 [cited by applicant]
JP 2013501555A · 2013 [cited by applicant]
JP 2017505214A · 2017 [cited by applicant]
WO 2011150238A1 · 2011 [cited by applicant]
WO 2013009966A2 · 2013 [cited by applicant]
WO 2013063314A1 · 2013 [cited by applicant]
WO 2015118517A1 · 2015 [cited by applicant]
WO 2018085329A1 · 2018 [cited by applicant]
Office Action (The First Office Action) issued May 8, 2024, by the State Intellectual Property Office of People's Republic of China in corresponding Chinese Patent Application No. 201910783633.7 and an English translati… [cited by applicant]
Non Final Office Action for U.S. Appl. No. 16/950,304, mailed Apr. 3, 2023, 26 pages. [cited by applicant]
Non Final Office Action for U.S. Appl. No. 16/950,074, dated Mar. 10, 2023, 27 pages. [cited by applicant]
Office Action (The Second Office Action) issued Dec. 20, 2024, in corresponding Chinese Patent Application No. 202110988219.7 and an English translation of the Office Action. (16 pages). [cited by applicant]
Office Action (The Second Office Action) issued Nov. 2, 2024, by the State Intellectual Property Office of People's Republic of China in corresponding Chinese Patent Application No. 201910783633.7 and an English transla… [cited by applicant]
Office Action (Notice of Reasons for Rejection) issued Jan. 21, 2025, by the Japanese Patent Office in corresponding Japanese Patent Application No. 2023-187739 and an English translation of the Office Action. (6 pages). [cited by applicant]
The Extended European Search Report issued Jul. 10, 2025, by the European Patent Office in corresponding European Patent Application No. 25157720.1-1122. (7 pages). [cited by applicant]
Office Action (Examination report No. 1 for standard patent application) issued Aug. 20, 2024, by the Australian Government, IP Australia in corresponding Australian Patent Application No. 2019232875. (5 pages). [cited by applicant]
Office Action (Notice of Reasons for Rejection) issued Aug. 6, 2024, by the Japanese Patent Office in corresponding Japanese Patent Application No. 2023-187739 and an English translation of the Office Action. (9 pages). [cited by applicant]
Japanese Notice of Reasons for Rejection for Japanese Application No. 2019-206156, mailed Aug. 29, 2023 with translation, 8 pages. [cited by applicant]
Extended European Search Report for European Application No. 19214530.8, dated Nov. 19, 2020, 12 pages. 2020. [cited by applicant]
Extended European Search Report for European Application No. 21200744.7, dated Jan. 4, 2022, 8 pages. [cited by applicant]
Extended European Search Report for European Application No. 21200764.5, dated Dec. 23, 2021, 7 pages. [cited by applicant]
Extended European Search Report for European Application No. 21208113.7, dated Apr. 20, 2022, 9 pages. [cited by applicant]
Partial European Search Report for European Application No. 19214530.8, dated Jul. 21, 2020, 12 pages. 2020. [cited by applicant]
Entire patent prosecution history of U.S. Appl. No. 16/292,467, filed Mar. 5, 2019, entitled, “Cruciate Replacing Artificial Knee.” 2020. [cited by applicant]
Entire patent prosecution history of U.S. Appl. No. 17/167,194, filed Feb. 4, 2021, entitled, “Modular Artificial Knee System.” [cited by applicant]
Office Action (Communication pursuant to Article 94(3) (EPC) issued Jul. 16, 2024, by the European Patent Office in corresponding European Patent Application No. 21 208 113.7-1122. (7 pages). [cited by applicant]
Office Action (The First Office Action) issued Jun. 28, 2024, in corresponding Chinese Patent Application No. 202110988219.7 and an English translation of the Summary of the Office Action. (10 pages). [cited by applicant]
Non Final Office Action for U.S. Appl. No. 17/082,568, mailed Apr. 20, 2023, 30 pages. [cited by applicant]
D'Alessio et al., “On the Application of RRSS Motion Generation and RRSS Axode Generation for the Design of a Concept Prosthetic Knee”, Aug. 3, 2016, Mechanics Based Design of Structures and Machines: An International J… [cited by applicant]
Office Action (Notice of Reasons for Rejection) issued Dec. 16, 2025, by the Japanese Patent Office in corresponding Japanese Patent Application No. 2024-174348 and an English translation of the Office Action. (11 pages… [cited by applicant]