US 12,274,452 B2
Surgical kit for tibial resection and replacement
Nam T. Chao, Marlborough, MA (US)
Assigned to ConforMIS, Inc., Billerica, MA (US)
Filed by ConforMIS, Inc., Billerica, MA (US)
Filed on Jul. 5, 2023, as Appl. No. 18/347,047.
Application 18/347,047 is a continuation of application No. 17/222,530, filed on Apr. 5, 2021, abandoned.
Application 17/222,530 is a continuation of application No. 16/671,571, filed on Nov. 1, 2019, granted, now 10,966,732, issued on Apr. 6, 2021.
Application 16/671,571 is a continuation of application No. 15/330,828, filed on Nov. 7, 2016, abandoned.
Application 15/330,828 is a continuation of application No. 13/865,958, filed on Apr. 18, 2013, granted, now 9,486,226, issued on Nov. 8, 2016.
Claims priority of provisional application 61/635,270, filed on Apr. 18, 2012.
Prior Publication US 2023/0346391 A1, Nov. 2, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 17/15 (2006.01)
CPC A61B 17/157 (2013.01) 19 Claims
OG exemplary drawing
 
1. A system for treating a tibia of a patient, the system comprising:
a tibial implant intended to replace at least a portion of the tibia of the patient;
a tibial guide housing, the tibial guide housing comprising:
a top side generally opposite a bottom side a front side generally opposite a back side, and a medial side generally opposite a lateral side;
a first reference arm having a patient-specific contact surface configured to conform to a first tibial surface, the first tibial surface being a first portion of a superior surface of the tibia;
a second reference arm having a patient-specific contact surface configured to conform to a second tibial surface, the second tibial surface being a second portion of the superior surface of the tibia,
wherein the back side includes a patient-specific contact surface configured to conform to a third tibial surface, the third tibial surface being a portion of an anterior surface of the tibia,
wherein the patient-specific contact surface of the back side has a medial-most edge and a lateral-most edge;
wherein the tibial guide housing defines a void in at least a portion of the top side, the void sized and positioned such that when the tibial guide housing is positioned on the tibia and the patient-specific contact surfaces of each of the first reference arm, the second reference arm, and the back side are in conforming engagement with the first, second, and third tibial surfaces, respectively, a surgeon is able to view a portion of a peripheral edge of the anterior surface of the tibia, the portion of the peripheral edge of the anterior surface of the tibia having a medial-lateral position disposed between the medial-most edge and the lateral-most edge of the patient-specific surface of the back side; and
wherein the tibial guide housing defines a tibial-guide-box opening in at least a portion of the front side, the tibial-guide-box opening sized and shaped for the insertion of a tibial guide box at least partially into the tibial guide housing and for releasable securement of the tibial guide box to the tibial guide housing,
wherein when the tibial guide box is releasable secured within the tibial guide housing and the tibial guide housing is positioned on the tibia and the patient-specific contact surfaces of each of the first reference arm, the second reference arm, and the back side are in conforming engagement with the first, second, and third tibial surfaces, respectively, a guide aperture of the tibial guide box will guide a cutting tool inserted through the guide aperture along a cutting plane having a predetermined cut depth and angle in the tibia such that the tibial implant may be placed onto the cut tibia at the predetermined cut depth and angle.