Patient-specific shoulder guide

• US 9,289,253 B2
• Filed: 11/03/2010
• Issued: 03/22/2016
• Est. Priority Date: 02/27/2006
• Status: Active Grant

• Current Assignee: Biomet Manufacturing, LLC (Zimmer Biomet Holdings, Inc.)
• Original Assignee: Biomet Manufacturing, LLC (Zimmer Biomet Holdings, Inc.)
• Inventors: Vanasse, Thomas, Metzger, Robert
• Primary Examiner(s): Isabella, David
• Assistant Examiner(s): NELSON, CHRISTINE L
• Application Number:
  US12/938,913
• Publication Number:
  US 20110054478A1
• Time in Patent Office: 1,966 Days
• Field of Search: 623/18.11, 623/19.11, 623/19.13, 623/19.14
• 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 17/151 for corrective osteotomy
• CPC Class Codes: A61B 17/152 for removing a wedge-shaped piece of bone
• 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 17/809 with bone-penetrating elements, e.g. blades or prongs bone staples A61B17/0642; intramedullary nails with a plate at an end A61B17/7233
• CPC Class Codes: A61B 2017/00526 Methods of manufacturing
• 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
• CPC Class Codes: A61F 2/4657 Measuring instruments used for implanting artificial joints for surgical instruments A61B90/06
• CPC Class Codes: A61F 2002/30594 slotted, e.g. radial or meridian slot ending in a polar aperture, non-polar slots, horizontal or arcuate slots
• CPC Class Codes: A61F 2002/4662 for measuring penetration depth
• CPC Class Codes: A61F 2002/4668 for measuring angles
• CPC Class Codes: A61F 2002/4677 using a guide wire

Abstract

An orthopedic device for a shoulder joint includes a patient-specific alignment guide. The alignment guide includes a cap having a three-dimensional engagement surface customized in a pre-operative plan by computer imaging to be complementary and closely mate and conform to a humeral head of a proximal humerus of a patient. The alignment guide includes a tubular element extending from the cap and defining a longitudinal guiding bore for guiding an alignment pin at a patient-specific position and orientation determined in the pre-operative plan, and an orientation feature on the cap. The orientation feature is designed to orient the cap relative to the humeral head when the orientation feature is aligned with a landmark of the proximal humerus.

Claims

1. An orthopedic device for a shoulder joint comprising:

a patient-specific alignment guide including;

a cap comprising a hemispherically-shaped shell, the shell having an exterior surface and a customized interior surface configured to be complementary and match at a selected particular position on a humeral head of a specific patient, and the shell including a peripheral edge that terminates at a portion of an anatomic neck of the humeral head, a periphery of the cap being configured to surround an anatomic neck of the humeral head;

an elongated tubular element extending from the cap and defining a longitudinal guiding bore configured for guiding an alignment pin at a patient-specific position and an orientation determined in the pre-operative plan;

a tab extending away from the periphery of the cap, the tab configured and sized and shaped to be received at least partially in a bicipital groove of the humeral head to orient the cap relative to the humeral head when the orientation feature is aligned with the bicipital groove; and

a resection formation provided at the periphery of the cap, the resection formation being configured for guiding a resection of the anatomic neck of the humeral head.

2. The orthopedic device of claim 1, wherein the resection formation is a slot along a portion of the periphery of the cap at a patient-specific orientation relative to the alignment pin.

3. The orthopedic device of claim 1, wherein the resection formation is an edge along a portion of periphery of the cap.

4. The orthopedic device of claim 1, further comprising the alignment pin.

5. The orthopedic device of claim 4, further comprising a sizer template mountable over the alignment pin after the humeral head is resected and the patient-specific alignment guide is removed.

6. The orthopedic device of claim 1, further comprising a sizer template having a radial slot, the sizer template mountable over the alignment pin after the humeral head is resected and the patient-specific alignment guide is removed.

7. An orthopedic device for a shoulder joint comprising:

a patient-specific alignment guide including;

a cap having a three-dimensional engagement surface customized in a pre-operative plan by computer imaging to closely mate and conform to a corresponding humeral head of a proximal humerus of a patient, a periphery of the cap being configured to surround an anatomic neck of the humeral head;

a tubular element extending from the cap and defining a longitudinal guiding bore for guiding an alignment pin at a patient-specific position and an orientation determined in the pre-operative plan; and

a tab extending from the cap, the tab configured to be at least partially received into a bicipital groove of the proximal humerus to orient the cap relative to the proximal humerus;

wherein the alignment guide is configured to be removed from the humeral head after insertion of the alignment pin into the humeral head without removing the alignment pin.

8. The orthopedic device of claim 7, further comprising the alignment pin.

9. The orthopedic device of claim 7, wherein the resection slot extends along a portion of the periphery of the cap.

10. The orthopedic device of claim 7, further comprising a resection formation provided at the periphery of the cap, the resection formation being a resection slot configured for guiding a resection of the anatomic neck of the humeral head.

11. An orthopedic device for a shoulder joint, comprising:

an alignment guide including;

a hemispherically-shaped shell, the shell having an exterior surface and a customized interior surface configured to be complementary and match at only a single position on a humeral head of a specific patient, and the shell including a peripheral edge that terminates at a portion of an anatomic neck of the humeral head;

a lip extending radially outward and entirely about the peripheral edge of shell;

a rectangular-shaped tab extending axially outward from the peripheral edge of the shell, the tab being configured and sized to be received within a bicipital groove of the humeral head to orient the shell relative to the humeral head when the tab is aligned with a landmark of the proximal humerus;

an elongated tubular element extending axially outward from the exterior surface of the shell, the tubular element defining a guiding bore configured to guide an alignment pin to a predetermined location of the humeral head at a patient-specific orientation; and

an elongated resection slot formed in a portion of the lip, the elongated resection slot being configured for guiding a patient-specific resection of the anatomic neck of the humeral head,

wherein the alignment guide is configured to be removed from the humeral head after insertion of the alignment pin into the humeral head without removing the alignment pin; and

the tab has a width less than a diameter of the elongated tubular element.