KNEE IMPLANTS AND INSTRUMENTS

• US 20160278929A1
• Filed: 03/23/2015
• Published: 09/29/2016
• Est. Priority Date: 03/23/2015
• Status: Active Grant

• Current Assignee: Modal Manufacturing, LLC
• Original Assignee: Modal Manufacturing, LLC
• Inventors: Harris, Thomas Bradley, Rynearson, Andrew Meredith
• Granted Patent: US 9,820,858 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 17/155 Cutting femur
• CPC Class Codes: A61F 2/389 Tibial components A61F2/3868 takes precedence
• CPC Class Codes: A61F 2002/30878 with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
• CPC Class Codes: A61F 2002/30879 Ribs
• CPC Class Codes: A61F 2002/30884 Fins or wings, e.g. longitudinal wings for preventing rotation within the bone cavity
• CPC Class Codes: A61F 2002/30891 Plurality of protrusions
• CPC Class Codes: A61F 2220/0008 Fixation appliances for connecting prostheses to the body

Abstract

A tibial tray component includes a tibial tray portion with a post portion protruding from a bone-contacting side of the tibial tray portion. The tibial tray portion may include ribs extending along the bone-facing side in areas of high stress during the gait cycle. The post portion may include at least one fin projecting outwardly from the post portion and extending along a portion of the length of the post portion. A cut block assembly includes a cut block and at least one pin. The cut block may include several mounting locations for the pin. The pin may include an anti-rotation portion and a tapered free end.

Claims

1. A system comprising:

a tibial tray component comprising a tibial tray portion and a cut block assembly comprising a cut block and at least one pin coupled to the cut block, wherein the pin comprises an anti-rotation portion.

2. The system according to claim 1 wherein said tibial tray portion comprises a post portion, wherein the post portion protrudes from a bone-facing side of the tibial tray portion, wherein the post portion comprises a longitudinal fin which protrudes from the post portion, wherein the fin projects anteriorly when the tibial tray component is operatively mounted to a prepared proximal tibia.

3. The system according to claim 1 wherein said tibial tray portion comprises a bone-facing side, wherein the bone-facing side comprises at least one protruding rib extending in an area of high service stress when the tibial tray component is operatively mounted to a prepared proximal tibia.

4. The system according to claim 1 wherein said pin comprises an anti-rotation portion and a tapered free end.

5. The system according to claim 1 wherein said cut block assembly comprises a cut block and at least one pin coupled to the cut block, wherein the cut block comprises a plurality of mounting locations for coupling the pin to the cut block.