Multi-point fit for patient specific guide

• US 9,579,107 B2
• Filed: 03/11/2014
• Issued: 02/28/2017
• Est. Priority Date: 03/12/2013
• Status: Active Grant

• Current Assignee: Biomet Manufacturing, LLC (Zimmer Biomet Holdings, Inc.)
• Original Assignee: Biomet Manufacturing, LLC (Zimmer Biomet Holdings, Inc.)
• Inventors: Schoenefeld, Ryan J.
• Primary Examiner(s): BOLES, SAMEH RAAFAT
• Application Number:
  US14/204,306
• Publication Number:
  US 20140276856A1
• Time in Patent Office: 1,085 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: A61B 17/15 Guides therefor arrangements for guiding straight saw blades in general B23D51/025
• CPC Class Codes: A61B 17/155 Cutting femur
• CPC Class Codes: A61B 2017/568 produced with shape and dimensions specific for an individual patient
• CPC Class Codes: A61B 2034/108 Computer aided selection or customisation of medical implants or cutting guides
• CPC Class Codes: A61B 34/10 Computer-aided planning, simulation or modelling of surgical operations

Abstract

A bone preparation system including a guide body and a plurality of bone locators. The guide body is configured to mate with a patient-specific module having a patient-specific module surface customized based on image data of a specific patient to correspond to the patient'"'"'s specific bone geometry. The plurality of bone locators are coupled to the guide body and positioned by the patient-specific module surface to define a patient-specific bone engaging surface of the guide corresponding to the patient'"'"'s specific bone geometry.

Claims

1. A bone preparation system comprising:

a guide body configured to mate with a patient-specific module having a patient-specific module surface customized based on image data of a specific patient to correspond to the patient'"'"'s specific bone geometry; and

a plurality of bone locators coupled to the guide body and positioned by the patient-specific module surface to define a patient-specific bone engaging surface of the guide corresponding to the patient'"'"'s specific bone geometry, wherein the guide body defines a compartment configured to receive the patient-specific module therein, the patient-specific module is a patient-specific insert.

2. The bone preparation system of claim 1, wherein the bone locators include a plurality of pins movable in response to direct contact with the patient-specific module surface.

3. The bone preparation system of claim 1, wherein the patient-specific bone engaging surface is defined by distal tips of the plurality of bone locators.

4. The bone preparation system of claim 1, further comprising the patient-specific module, the patient-specific module surface of the patient-specific module includes a three-dimensional surface.

5. The bone preparation system of claim 1, wherein the guide body defines a guide surface configured to receive a cutting instrument and direct the cutting instrument to the patient'"'"'s bone.

6. The bone preparation system of claim 1, wherein the guide body defines a plurality of guide bores configured to direct guides to the patient'"'"'s bone at a location and orientation specific to the patient'"'"'s bone geometry.

7. A system for preparing a specific patient'"'"'s bone with a bone preparation guide, the system comprising:

a guide body including a plurality of bone locators movable into and out of the guide body; and

a patient-specific insert configured to be received by the guide body, the patient-specific insert including a patient-specific insert surface customized based on image data of a specific patient to correspond to the patient'"'"'s specific bone geometry;

wherein cooperation between the patient-specific insert and the guide body positions the bone locators to define a patient-specific bone engaging surface at distal tips of the plurality of bone locators, the patient-specific bone engaging surface corresponding to the patient'"'"'s specific bone geometry, wherein the guide body defines a receptacle for receipt of the insert therein, cooperation between the patient-specific insert surface and the bone locators positions the bone locators to define the patient-specific bone engaging surface.

8. The system of claim 7, wherein the bone locators are slidable pins.

9. The system of claim 7, wherein the patient-specific insert surface includes a three-dimensional bone mating surface.

10. The system of claim 7, wherein the guide body defines a cutting slot configured to direct a cutting instrument to the bone.

11. The system of claim 7, wherein the guide body defines a plurality of guide bores configured to direct guides to the patient'"'"'s bone at a location and orientation specific to the patient'"'"'s bone geometry.

12. The system of claim 7, wherein the patient-specific bone engaging surface can be modified to correspond to different bone surfaces of different patients.