Instruments and systems including a humeral cut guide assembly for an orthopedic shoulder replacement

Patent metadata

Field	Value
Publication number	US-12496074-B2
Application number	US-202218281889-A
Country	US
Kind code	B2
Filing date	Mar 16, 2022
Priority date	Mar 25, 2021
Publication date	Dec 16, 2025
Grant date	Dec 16, 2025

Abstract

An instrument assembly for an orthopedic procedure is disclosed. The instrument assembly can optionally include any one or combination of a reamer and a cut guide assembly. The cut guide assembly can be configured to couple to the reamer. The cut guide assembly can optionally include any one or combination of a clamp, a carriage and a cut block. The clamp can be selectively movable along a shaft of the reamer and lockable thereto. The first arm can project from the reamer. The carriage can be selectively moveable along a longitudinal length of the first arm. The cut block can be coupled to the carriage via one or more magnets.

First claim

What is claimed is:

1 . An instrument assembly for an orthopedic procedure, comprising:
a reamer; and a cut guide assembly configured to couple to the reamer, the cut guide assembly comprising:
a clamp selectively movable along a shaft of the reamer and lockable thereto;
a first arm projecting from the reamer;
a carriage selectively moveable along a longitudinal length of the first arm; and
a cut block coupled to the carriage via one or more magnets;
wherein the carriage includes a second arm projecting away from the first arm and a retainer configured to receive the one or more magnets therein; the retainer comprising:
one or more inverted cups configured to receive the one or more magnets therein; and
one or more wave springs configured to bias the one or more magnets against a lid of the one or more inverted cups.

2 . The instrument assembly of claim 1 , wherein the clamp includes a leaf spring configured to defect when selectively engaging the shaft of the reamer.

3 . The instrument assembly of claim 1 , wherein the clamp includes a plunger configured to engage the shaft of the reamer and a lever configured to actuate movement the plunger to engage with and disengage from the shaft of the reamer.

4 . The instrument assembly of claim 3 , wherein the plunger is positioned within and moveable relative to the first arm, and wherein the lever is positioned at a longitudinal end portion of the first arm opposing the reamer.

5 . The instrument assembly of claim 1 , wherein the carriage includes a spring finger configured to engage with the first arm.

6 . The instrument assembly of claim 1 , wherein the one or more magnets comprise button magnets.

7 . The instrument assembly of claim 1 , wherein the retainer has a plurality rails and grooves configured to engage with a corresponding plurality of rails and grooves of the cut block.

8 . The instrument assembly of claim 1 , wherein the cut block is configured to be rotatable relative to the carriage.

9 . The instrument assembly of claim 1 , further comprising a plurality of rods configured to indicate an orientation of the cut guide assembly.

Assignees

• Zimmer Inc

Inventors

• Dye Jr Donald W
• Kay Michael A
• Kovacs Michael Francis

Classifications

• A61B2017/00876

  magnetic · CPC title

• A61B2017/00477

  Coupling (A61B2017/0046 takes precedence) · CPC title

• A61B17/1778 Primary

  for the shoulder · CPC title

• A61B17/15 Primary

  Guides therefor · CPC title