Patient specific reconstructive glenoid systems and methods

Patent metadata

Field	Value
Publication number	US-11344435-B2
Application number	US-202016809203-A
Country	US
Kind code	B2
Filing date	Mar 4, 2020
Priority date	Mar 30, 2017
Publication date	May 31, 2022
Grant date	May 31, 2022

Abstract

A system for repairing a glenoid defect of a specific patient can include a patient-specific punch and a patient-specific shaping block. The patient-specific punch can form a patient-specific glenoid implant from a bone puck. The patient-specific shaping block can shape the patient-specific glenoid implant to match and fill a glenoid defect of a specific patient.

First claim

What is claimed is:

1. A patient-specific bone substitute injector for repairing a glenoid defect of a specific patient, the system comprising:
an injector;
a nozzle coupled to the injector, such that the nozzle is configured to receive bone substitute via the injector; and
a patient-specific portion coupled to the nozzle, the patient-specific portion including a patient-specific void corresponding to the glenoid defect;
wherein the patient-specific bone substitute injector is configured to concentrate the bone substitute to directly fill the glenoid defect through the patient-specific portion.

2. The patient-specific bone substitute injector of claim 1 , wherein the patient-specific portion is configured to be placed over a face of the glenoid defect.

3. The patient-specific bone substitute injector of claim 2 , wherein the patient-specific portion concentrates the bone substitute to directly fill the glenoid defect thorough the patient-specific void.

4. The patient-specific bone substitute injector of claim 2 , wherein the patient-specific portion constrains where the bone substitute can be injected such that the bone substitute is only placed inside the glenoid defect.

5. The patient-specific bone substitute injector of claim 1 , wherein the patient-specific portion is configured to create a seal around the glenoid.

6. The patient-specific bone substitute injector of claim 1 , wherein the patient-specific void has an irregular geometry corresponding to an irregular geometry of the glenoid defect.

7. The patient-specific bone substitute injector of claim 1 , wherein the patient-specific portion includes one or more attachment features configured to fit the patient-specific portion over the glenoid of the specific patient.

8. The patient-specific bone substitute injector of claim 1 , wherein:
the patient-specific portion is configured to be single-use, such that it is configured to be disposed of after it fills the glenoid defect of the specific patient; and
the injector is configured to be reused for subsequent patients.

9. The patient-specific bone substitute injector of claim 1 , wherein a perimeter of the patient-specific void is configured to align with a perimeter of the glenoid defect.

10. A system for repairing a glenoid defect of a specific patient, the system comprising:
an injector configured to be filled with bone substitute;
a nozzle coupled to the injector such that the nozzle is configured to receive the bone substitute via the injector; and
a first patient-specific portion coupled to the nozzle, the first patient-specific portion including a patient-specific void corresponding to a glenoid defect of a first patient;
wherein the first patient-specific portion is configured to direct the bone substitute from the injector into the glenoid defect of the first patient.

11. The system of claim 10 , further comprising:
a second patient-specific portion configured to be coupled to the nozzle, the second patient-specific portion including a patient-specific void corresponding to a glenoid defect of a second patient;
wherein the second patient-specific portion is configured to direct the bone substitute from the injector into the glenoid defect of the second patient; and
wherein the dimensions of the patient-specific void of the second patient-specific portion are different than the dimensions of the patient-specific void of the first patient-specific portion.

12. The system of claim 11 , wherein:
the first patient-specific portion is configured to be removed from the nozzle; and
the second patient-specific portion is configured to be coupled to the nozzle.

13. The system of claim 10 , wherein the patient-specific void of the first patient-specific portion has an irregular geometry corresponding to an irregular geometry of the glenoid defect of the first patient.

14. The system of claim 13 , further comprising:
a second patient-specific portion configured to be coupled to the nozzle, the second patient-specific portion including a patient-specific void having an irregular geometry corresponding to an irregular geometry of a glenoid defect of a second patient;
wherein the irregular geometry of the patient-specific void of the first patient-specific portion is different than the irregular geometry of the patient-specific void of the second patient-specific portion.

15. The system of claim 10 , wherein the patient-specific void of the first patient-specific portion is configured to prevent bone substitute from attaching to areas where it is not needed while filling the glenoid defect.

16. A method for repairing a glenoid defect of a specific patient, the method comprising:
coupling a first patient-specific portion to a nozzle of an injector, wherein the first patient-specific portion includes a first patient-specific void having a geometry corresponding to a geometry of a first glenoid defect of a first patient; and
injecting, via the injector, bone substitute through the first patient-specific void and into the first glenoid defect.

17. The method of claim 16 , further comprising:
aligning the geometry of the first patient-specific void with the geometry of the first glenoid defect.

18. The method of claim 17 , wherein aligning the geometry of the first patient-specific void with the geometry of the first glenoid defect includes forming a semi-sealed fit with the glenoid of the first patient, such that the bone substitute is prevented from being injected outside of the first glenoid defect while the geometries are aligned.

19. The method of claim 16 , further comprising:
removing the first patient-specific portion from the nozzle of the injector; and
coupling a second patient-specific portion to the nozzle, wherein the second patient-specific portion includes a second patient-specific void having a geometry corresponding to a geometry of a second glenoid defect of a second patient;
wherein the geometry of the first glenoid defect is different than the geometry of the second glenoid defect.

20. The method of claim 16 , further comprising:
allowing the injected bone substitute to cure inside the first glenoid defect to form a glenoid implant; and
resurfacing the glenoid implant.

Assignees

• Biomet Mfg Llc

Inventors

• Winslow Nathan A
• Kovacs Michael Francis
• Schulz John

Classifications

• A61F2002/2839

  Bone plugs or bone graft dowels · CPC title

• A61F2002/4681

  by applying mechanical shocks, e.g. by hammering · CPC title

• A61F2/4612 Primary

  of shoulders · CPC title

• A61B17/1604

  Chisels; Rongeurs; Punches; Stamps · CPC title

• A61F2/30942 Primary

  for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques · CPC title