Customized patient-specific orthopaedic surgical instrument and method for preparing a patient's femur

Patent metadata

Field	Value
Publication number	US-11793549-B2
Application number	US-202117404384-A
Country	US
Kind code	B2
Filing date	Aug 17, 2021
Priority date	Jun 1, 2018
Publication date	Oct 24, 2023
Grant date	Oct 24, 2023

Abstract

An orthopaedic surgical instrument includes a customized patient-specific 5-in-1 cutting block having a plurality of ribs and cutting guide slots extending between each rib. A bone-facing surface of each rib has a customized patient-specific negative contour configured to receive a portion of a corresponding positive contour of the patient's femur.

First claim

The invention claimed is:

1. An orthopaedic surgical instrument comprising:
a customized patient-specific 5-in-1 cutting block, comprising:
an anterior flange including a bone-facing surface having a customized patient-specific negative contour configured to receive a portion of a corresponding positive contour of a patient's femur,
a keel including a distal segment extending from the anterior flange to a posterior end and a posterior segment extending proximally from the posterior end of the distal segment, and
a plurality of ribs extending medially and laterally from the distal segment, and the proximal segment of the keel, each rib including a first end coupled to the keel, a cantilevered second end, and a bone-facing surface extending from the first end to the second end of each rib,
wherein each bone-facing surface of each rib has a customized patient-specific negative contour configured to receive a portion of a corresponding positive contour of the patient's femoral condyle,
wherein the plurality of ribs cooperate to define a plurality of cutting guides, each cutting guide including a slot having an open outer end defined between corresponding cantilevered second ends of adjacent ribs, and
wherein a plurality of captured cutting guides extend through the anterior flange.

2. The orthopaedic surgical instrument of claim 1 , wherein the keel includes a customized patient-specific negative contour configured to receive a portion of a corresponding positive contour of a surface defining the patient's intercondylar notch.

3. The orthopaedic surgical instrument of claim 1 , wherein the cutting guides include a first chamfer cutting guide and a second chamfer cutting guide.

4. The orthopaedic surgical instrument of claim 3 , wherein:
the first chamfer cutting guide includes a first slot aligned with a second slot, and
the second chamfer cutting guide includes a third slot aligned with a fourth slot.

5. The orthopaedic surgical instrument of claim 1 , wherein the cutting guides include a distal cutting guide, an anterior cutting guide, and a posterior cutting guide.

Assignees

• Depuy Synthes Products Inc

Inventors

• Rhodes James M
• Fritzinger Daniel D

Classifications

• A61B17/56 Primary

  Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor · CPC title

• A61B17/155 Primary

  Cutting femur · CPC title

• A61B17/1764

  for the knee · CPC title

• A61B34/10

  Computer-aided planning, simulation or modelling of surgical operations · CPC title

• A61B17/1664

  for the hip · CPC title