Patient specific glenoid guide

• US 9,451,973 B2
• Filed: 10/17/2012
• Issued: 09/27/2016
• Est. Priority Date: 10/27/2011
• Status: Active Grant

• Current Assignee: Biomet Manufacturing, LLC (Zimmer Biomet Holdings, Inc.)
• Original Assignee: Biomet Manufacturing, LLC (Zimmer Biomet Holdings, Inc.)
• Inventors: Heilman, Benjamin P, Winslow, Nathan A., McDaniel, John M., Denham, Gregory J.
• Primary Examiner(s): Bates, David
• Assistant Examiner(s): Chang, Olivia C
• Application Number:
  US13/653,878
• Publication Number:
  US 20140107715A1
• Time in Patent Office: 1,441 Days
• Field of Search: 606 87- 89, 606/91, 606/96, 623 1911- 1914
• US Class Current: 1/1
• CPC Class Codes: A61B 17/1739 specially adapted for particular parts of the body
• CPC Class Codes: A61B 17/1778 for the shoulder
• 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: A61F 2/4081 Glenoid components, e.g. cups
• CPC Class Codes: A61F 2002/4687 Mechanical guides for implantation instruments

Abstract

A patient-specific guide tool for guiding an object toward a glenoid face of a scapula of a patient for implantation of a shoulder prosthetic device is disclosed. The guide tool includes a guide portion that includes a guide surface. The guide surface is configured to guide movement of the object toward the glenoid face. Furthermore, the guide tool includes a patient-specific portion that is operably coupled to the glenoid portion. The patient-specific portion includes at least one patient-specific surface that is three-dimensionally contoured and that is configured to nest and closely conform to a corresponding surface of the scapula to thereby position the guide surface at a predetermined position relative to the glenoid face.

Claims

1. A method of guiding an object toward a glenoid face of a scapula of a patient for implantation of a shoulder prosthetic device, the method comprising:

nesting a first patient-specific surface of a first patient-specific portion of a guide tool to an acromion remote from the glenoid face, the nesting occurring only when the first patient-specific surface of the first patient-specific portion is in a single position relative to the glenoid face;

nesting a second patient-specific surface of a second patient-specific portion of the guide tool to the glenoid face, the nesting occurring only when the second patient-specific surface of the second patient-specific portion is in a single position relative to a surface of the portion of the scapula, the second patient-specific portion spaced apart from the first patient-specific portion with a patient-generic portion therebetween, the guide tool configured such that nesting of the second patient-specific portion occurs prior to nesting of the first patient-specific portion;

positioning a guide portion of the guide tool on the glenoid face; and

cutting the glenoid face with a patient-specific cutting surface of the guide portion.

9. The method of claim 1, further comprising providing an actuator operably coupled to the guide tool.

10. The method of claim 9, wherein the actuator is coupled to the guide tool by a rod.

11. The method of claim 10, further comprising pumping fluid through one or more fluid conduits toward the cutting surface for facilitating cutting of the glenoid face.

2. A method of guiding an object toward a glenoid face of a scapula of a patient for implantation of a shoulder prosthetic device, the method comprising:

preoperatively imaging at least a portion of the scapula to produce an image of the portion of the scapula;

providing a patient-specific guide tool having a guide portion and a patient-specific portion, the guide portion including a guide surface, the patient-specific portion being operably coupled to the guide portion, the patient-specific portion including at least one patient-specific surface that is configured according to the image;

nesting the patient-specific surface of the guide tool to the at least a portion of the scapula, the nesting occurring only when the patient-specific surface of the patient-specific portion is in a single position relative to a surface of the at least a portion of the scapula thereby positioning the guide surface at a predetermined position relative to the glenoid face, nesting the patient-specific surface of the guide tool includes nesting the patient-specific surface to a scapular spine of the scapula; and

nesting a patient-specific surface of a first member and a patient-specific surface of a second member of the guide tool to cooperatively straddle the spine of the scapula.

3. The method of claim 2, further comprising nesting the patient-specific surface of the first member to a superior surface of the scapular spine of the scapula and nesting the patient-specific surface of the second member to an inferior surface of the scapular spine of the scapula.

4. The method of claim 2, further comprising penetrating soft tissue with ends of the first and second members during advancement of the guide tool over the scapular spine.

5. A method of guiding an object toward a glenoid face of a scapula of a patient for implantation of a shoulder prosthetic device, the method comprising:

preoperatively imaging at least a portion of the scapula to produce an image of the portion of the scapula;

providing a patient-specific guide tool having a guide portion and an arm with a head at an end thereof opposite the guide portion, the guide portion includes at least one patient-specific surface that is configured according to the image, the arm is configured to moveably couple to the guide portion; and

moving the patient-specific guide tool between a collapsed position where the arm is disposed more closely adjacent the guide portion and an extended position where the arm is extended relatively further away from the guide portion and where both the at least one patient-specific surface nests against the glenoid face and the head abuts the acromion, wherein the at least one patient-specific surface nests against the glenoid face only when the at least one patient-specific surface is in a single position relative to a corresponding surface of the glenoid face.

6. The method of claim 5, wherein the head further includes a second patient-specific surface configured according to the image, the second patient-specific surface nests against the acromion only when the second patient-specific surface is in a single position relative to a corresponding surface of the acromion.

7. The method of claim 5, further comprising introducing the patient-specific guide tool into the patient in the collapsed position.

8. The method of claim 5, further comprising securing the patient-specific tool in the extend position with a retaining device.

12. A method of guiding an object toward a glenoid face of a scapula of a patient for implantation of a shoulder prosthetic device, the method comprising:

preoperatively imaging at least a portion of the scapula to produce an image of the portion of the scapula;

nesting a first patient-specific surface of a first rod of a guide tool to an acromion remote from the glenoid face, the nesting occurring only when the first patient-specific surface of the first rod is in a single position relative to the glenoid face;

nesting a second patient-specific surface of a second rod of the guide tool to the glenoid face, the nesting occurring only when the second patient-specific surface of the second rod is in a single position relative to a surface of the portion of the scapula, the second rod spaced apart from the first rod; and

coupling a handle to the first rod and the second rod, the coupling occurring external to the patient'"'"'s body.

13. The method of claim 12, wherein at least one of the first and second rods are removably coupled to the handle.

14. The method of claim 12, further comprising providing a branch that is moveably coupled to the second rod.

15. The method of claim 14, further comprising guiding a drill bit with the guide surface of the branch into the glenoid face for forming a hole in the glenoid face.

16. The method of claim 15, further comprising positioning a referencing pin in the hole and guiding a reamer over the referencing pin to ream the glenoid face.

17. The method of claim 14, further comprising moving the branch relative to the second rod via a lever.

18. The method of claim 17, wherein the moving of the branch relative to the second rod facilitates nesting of the second patient-specific surface and nesting of a third patient-specific surface of the branch to the glenoid face.

19. The method of claim 17, further comprising fixating the branch relative to the second rod.

20. The method of claim 14, further comprising nesting a third patient-specific surface of the branch of the guide tool to the glenoid face, the nesting occurring only when the third patient-specific surface of the branch is in a single position relative to a second surface of the portion of the scapula.

21. The method of claim 14, further comprising introducing the second rod and branch into the patient in the collapsed position.