Acetabulum Surgical Resurfacing Aid

• US 20100016984A1
• Filed: 07/02/2009
• Published: 01/21/2010
• Est. Priority Date: 07/21/2008
• Status: Active Grant

• Current Assignee: Harutaro Trabish
• Original Assignee: Harutaro Trabish
• Inventors: Trabish, Harutaro
• Granted Patent: US 8,702,805 B2
• Time in Patent Office: Days
• US Class Current: 623/22.320
• CPC Class Codes: A61B 17/151 for corrective osteotomy
• CPC Class Codes: A61B 17/1746 for the acetabulum
• CPC Class Codes: A61F 2/4609 of acetabular cups
• CPC Class Codes: A61F 2/4657 Measuring instruments used for implanting artificial joints for surgical instruments A61B90/06
• CPC Class Codes: A61F 2002/3071 Identification means; Administration of patients
• CPC Class Codes: A61F 2002/4633 for selection of endoprosthetic joints or for pre-operative planning
• CPC Class Codes: A61F 2002/4658 for measuring dimensions, e.g. length
• CPC Class Codes: A61F 2002/4664 for measuring conicities
• CPC Class Codes: A61F 2002/4668 for measuring angles
• CPC Class Codes: A61F 2002/4687 Mechanical guides for implantation instruments
• CPC Class Codes: A61F 2250/0085 Identification means; Administration of patients

Abstract

An acetabulum surgical resurfacing aid that includes a body conformed to fit an acetabulum of a patient is presented. A portion of the body is further conformed to fit an acetabular fossa of the patient. One or more arms extend outward from the body and are configured to fit the surface of the acetabulum. A support extends from the body beyond the acetabulum. An alignment tube guide connects to the support.

Claims

1. An acetabulum surgical resurfacing aid, comprising:

a body conformed to fit an acetabulum of a patient, wherein a portion of the body is further conformed to fit an acetabular fossa of the patient;

one or more arms extending outward from the body and configured to fit the surface of the acetabulum;

a support extending from the body beyond the acetabulum; and

an alignment tube guide connected to the support.

2. An acetabulum surgical resurfacing aid according to claim 1, wherein the alignment tube guide defines an axis parallel to a planned acetabular prosthesis axis.

3. An acetabulum surgical resurfacing aid according to claim 1, wherein the surface of the body exactly matches the surface of acetabulum when in position.

4. An acetabulum surgical resurfacing aid according to claim 1, wherein part of the surface of the body is conformed to matches the surface acetebular fossa when in position.

5. An acetabulum surgical resurfacing aid according to claim 1, wherein the one or more arms match the surface of the acetabulum when in position.

6. An acetabulum surgical resurfacing aid according to claim 1, wherein the alignment tube guide is configured to receive a guide rod.

7. An acetabulum surgical resurfacing aid according to claim 1, wherein the guide rod comprises a self-screwing end.

8. An acetabulum surgical resurfacing aid according to claim 1, wherein the aid is composed of a biocompatible, flexible, medical grade material.

9. An acetabulum surgical resurfacing aid according to claim 1, wherein the material is selected from one of polycarbonate and acrylonitrile butadiene styrene.

10. An acetabulum surgical resurfacing aid according to claim 1, the body is further configured to receive a tool.

11. An acetabulum surgical resurfacing aid according to claim 1, wherein the aid is inscribed with at least one patient information and prosthesis information.

12. An acetabulum surgical resurfacing aid according to claim 1, further comprising one or more registration points.

13. A method for aligning an acetabulum prosthesis axis, comprising:

providing an acetabulum surgical resurfacing aid, comprising;

a body conformed to fit an acetabulum of a patient, wherein a portion of the body is further conformed to fit an acetabular fossa of the patient;

one or more arms extending outward from the body and configured to fit the surface of the acetabulum; and

a tube guide extending from the body beyond the acetabulum, wherein the tube guide defines an axis parallel to a planned acetabular prosthesis axis;

placing the acetabulum surgical resurfacing aid in position in an acetabulum of the patient; and

inserting a guide rod through the tube guide and into a pelvis of the patient.

14. A method for aligning an acetabulum prosthesis axis according to claim 13, further comprising:

removing the acetabulum surgical resurfacing aid from the acetabulum;

reaming the acetabulum with a reamer parallel to the axis of the guide rod;

removing the guide rod; and

implanting an acectabulum prosthesis into the acetabulum along the planned axis.

15. A method for aligning an acetabulum prosthesis axis according to claim 13, wherein in the guide rod is inserted into a central region of a ischium bone inferior of the spine of the isichium

16. A method for aligning an acetabulum prosthesis axis according to claim 13, wherein the acetabulum surgical resurfacing aid is composed of one of polycarbonate and acrylonitrile butadiene styrene.

17. A method for aligning an acetabulum prosthesis axis according to claim 13, further comprising:

pressing down on the body of the acetabulum surgical resurfacing aid with a tool, wherein the body is configured to receive the tool.

18. A method for aligning an acetabulum prosthesis axis according to claim 13, wherein the acetabulum surgical resurfacing aid is inscribed with at least one patient information and prosthesis information.

19. A method for aligning an acetabulum prosthesis axis according to claim 13, wherein the acetabulum surgical resurfacing aid further comprises one or more registration points.