Femoral Head Surgical Resurfacing Aid

• US 20100016986A1
• 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 8,206,396 B2
• Time in Patent Office: Days
• US Class Current: 623/23.140
• 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

A femoral head surgical resurfacing aid that includes a C-shaped band with an interior surface conformed to fit a femoral neck of a patient is presented. An arch extends from one side of the C-shaped band to the other side of the C-shaped band and further extends over a femoral head of the patient. An alignment tube guide is positioned along the arch and extends outward from the arch.

Claims

1. A femoral head surgical resurfacing aid, comprising:

a C-shaped band with an interior surface conformed to fit a femoral neck of a patient;

an arch extending from one side of the C-shaped band to the other side of the C-shaped band and further extending over a femoral head of the patient; and

an alignment tube guide positioned along the arch and extending outward from the arch.

2. A femoral head surgical resurfacing aid according to claim 1, wherein the interior surface of the C-shaped band matches the surface of the femoral neck when in a locked position.

3. A femoral head surgical resurfacing aid according to claim 2, wherein the C-shaped band is rotated into the locked position.

4. A femoral head surgical resurfacing aid according to claim 1, wherein the axis of the alignment tube guide is parallel and in-line with a planned femoral prosthesis implant axis.

5. A femoral head surgical resurfacing aid according to claim 1, further comprising:

one or more stabilizers extending from the arch and configured to touch the femoral head when the C-shaped band is in a locked position.

6. A femoral head surgical resurfacing aid according to claim 1, wherein the width of the C-shaped band substantially spans the femoral head-femoral neck junction and the greater trochanter-femoral neck junction.

7. A femoral head surgical resurfacing aid according to claim 1, wherein the opening of the C-shaped band is sized smaller that the femoral neck.

8. A femoral head surgical resurfacing aid according to claim 1, wherein the alignment tube guide is removable from the aid.

9. A femoral head surgical resurfacing aid according to claim 1, wherein the aid is composed of a biocompatible, flexible, medical grade material.

10. A femoral head surgical resurfacing aid according to claim 1, wherein the material is selected from one of polycarbonate and acrylonitrile butadiene styrene.

11. A femoral head surgical resurfacing aid according to claim 1, wherein the aid is inscribed with at least one of patient information, prosthesis information, and rotation direction.

12. A femoral head surgical resurfacing aid according to claim 1, further comprising one or more registration points.

13. A method for aligning a femoral head prosthesis implant axis, comprising:

providing a femoral head surgical resurfacing aid, comprising;

a C-shaped band with an interior surface conformed to fit a femoral neck of a patient;

an arch extending from one side of the C-shaped band to the other side of the C-shaped band and further extending over a femoral head of the patient; and

an alignment tube guide positioned along the arch and extending outward from the arch, wherein the axis of the alignment tube guide is parallel and in-line with a planned femoral head prosthesis implant axis;

placing the femoral head surgical resurfacing aid in position on the femoral neck of a patient;

inserting a boring tool through the alignment tube guide; and

drilling a pilot hole into the femoral head with the boring tool.

14. A method for aligning a femoral head prosthesis axis according to claim 13, further comprising:

removing the femoral head surgical resurfacing aid from the femoral neck;

resurfacing the femoral head; and

implanting a femoral head prosthesis into the femur of the patient.

15. A method for aligning a femoral head prosthesis axis according to claim 14, wherein removing the fermoral head prosthesis aid further comprises removing the alignment tube guide from the femoral head surgical resurfacing aid.

16. A method for aligning a femoral head prosthesis axis according to claim 13, wherein the interior surface of the C-shaped band matches the surface of the femoral neck when in position.

17. A method for aligning a femoral head prosthesis axis according to claim 13, further comprising rotating the femoral head surgical resurfacing aid into position.

18. A method for aligning a femoral head prosthesis axis according to claim 13, wherein the femoral head surgical resurfacing aid further comprises one or more stabilizers extending from the arch to the femoral head when the C-shaped band is in position.

19. A method for aligning a femoral head prosthesis axis according to claim 13, wherein the width of the C-shaped band substantially spans the femoral head-femoral neck junction and the greater trochanter-femoral neck junction when in position.

20. A method for aligning a femoral head prosthesis axis according to claim 13, wherein the femoral head surgical resurfacing aid is composed of one of polycarbonate and acrylonitrile butadiene styrene.

21. A method for aligning a femoral head prosthesis axis according to claim 13, wherein the femoral head surgical resurfacing aid is inscribed with at least one patient information, prosthesis information, and rotation direction.

22. A method for aligning a femoral head prosthesis axis according to claim 13, wherein the femoral head surgical resurfacing aid further comprises one or more registration points.