MARKING TEMPLATE FOR INSTALLING A CUSTOM REPLACEMENT DEVICE FOR RESURFACING A FEMUR AND ASSOCIATED INSTALLATION METHOD

• US 20140194998A1
• Filed: 03/12/2014
• Published: 07/10/2014
• Est. Priority Date: 03/17/2000
• Status: Active Grant

• Current Assignee: Kinamed Inc (VME Acquisition Corp)
• Original Assignee: Kinamed Inc (VME Acquisition Corp)
• Inventors: Carignan, Roger, Pratt, Clyde R.
• Granted Patent: US 8,936,602 B2
• Time in Patent Office: Days
• US Class Current: 623/20.35
• CPC Class Codes: A61B 17/00491 Surgical glue applicators surgical adhesives A61L24/00; two-component delivery syringes A61M5/19
• CPC Class Codes: A61B 17/1764 for the knee
• 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 2/30767 Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
• CPC Class Codes: A61F 2/30942 for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
• CPC Class Codes: A61F 2/3859 Femoral components
• CPC Class Codes: A61F 2/3877 Patellae or trochleae
• CPC Class Codes: A61F 2/461 of knees
• CPC Class Codes: A61F 2/4657 Measuring instruments used for implanting artificial joints for surgical instruments A61B90/06
• CPC Class Codes: A61F 2002/30125 elliptical or oval
• 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 2002/30685 Means for reducing or preventing the generation of wear particulates
• CPC Class Codes: A61F 2002/30892 parallel
• CPC Class Codes: A61F 2002/30948 using computerized tomography, i.e. CT scans
• CPC Class Codes: A61F 2002/30952 using CAD-CAM techniques or NC-techniques
• CPC Class Codes: A61F 2002/30957 using a positive or a negative model, e.g. moulds
• CPC Class Codes: A61F 2002/4658 for measuring dimensions, e.g. length
• CPC Class Codes: A61F 2230/0008 elliptical or oval
• CPC Class Codes: A61F 2310/00017 Iron- or Fe-based alloys, e.g. stainless steel
• CPC Class Codes: A61F 2310/00023 : Titanium or titanium-based alloys, e.g. Ti-Ni alloys
• CPC Class Codes: A61F 2310/00029 : Cobalt-based alloys, e.g. Co-Cr alloys or Vitallium
• CPC Class Codes: A61F 2310/00203 : containing alumina or aluminium oxide
• CPC Class Codes: A61F 2310/00239 : containing zirconia or zirconium oxide ZrO2
• CPC Class Codes: A61F 2310/00407 : Coating made of titanium or of Ti-based alloys
• CPC Class Codes: A61F 2310/00796 : Coating or prosthesis-covering structure made of a phosphorus-containing compound, e.g. hydroxy(l)apatite
• CPC Class Codes: Y10S 623/901 : Method of manufacturing prosthetic device
• CPC Class Codes: Y10T 29/49764 : with testing or indicating

Abstract

A replacement device for resurfacing a joint surface of a femur and a method of making and installing such a device is provided. The custom replacement device is designed to substantially fit the trochlear groove surface, of an individual femur, thereby creating a “customized” replacement device for that individual femur and maintaining the original kinematics of the joint. The top surface is designed so as to maintain centrally directed tracking of the patella perpendicular to the plane established by the distal end of the femoral condyles and aligned with the center of the femoral head.

Claims

1. A method comprising:

a. receiving a surgical instrument manufactured using pre-operative data, thereby configuring the surgical instrument based on the pre-operative data to mount to a particular patient'"'"'s distal-anterior portion of a femur in a pre-defined spatial arrangement, the surgical instrument further comprising a three-dimensional tissue contacting geometry and a surgical tool guide, such that the surgical tool guide is in a pre-defined spatial arrangement relative to the three-dimensional tissue contacting geometry;

b. placing the surgical instrument on the distal-anterior portion of the particular patient'"'"'s femur; and

c. using the surgical tool guide to guide a tool.

2. The method of claim 1, wherein the surgical tool guide comprises at least two drill guides configured to guide a formation of pin receiving openings in the femur of the particular patient.

3. The method of claim 1, wherein the surgical tool guide comprises a hole extending through a body of the surgical instrument.

4. The method of claim 1, wherein the surgical tool guide comprises a slot extending through a body of the surgical instrument.

5. The method of claim 1, wherein the surgical tool guide comprises a plurality of holes extending through a body of the surgical instrument.

6. The method of claim 1, wherein the surgical tool guide comprises at least one hole extending through a body of the surgical instrument, the at least one hole configured to guide a drill for drilling an opening in the femur of the particular patient.

7. The method of claim 1, wherein the surgical tool guide comprises at least one hole extending through a body of the instrument, the at least one hole configured to facilitate positioning at least one pin in the femur of the particular patient.

8. The method of claim 1, wherein the step of using the surgical tool guide to guide a tool comprises drilling a hole in the particular patient'"'"'s femur.

9. The method of claim 1, further comprising positioning at least one pin in the femur of the particular patient.

10. The method of claim 1, further comprising scraping away articular cartilage.

11. The method of claim 1, further comprising implanting an implant.

12. The method of claim 1, further comprising applying cement.

13. A method comprising:

a. receiving a surgical instrument manufactured using pre-operative data, thereby configuring the surgical instrument based on the pre-operative data to mount to a particular patient'"'"'s distal-anterior portion of a femur in a pre-defined spatial arrangement, the surgical instrument further comprising a three-dimensional tissue contacting geometry and a surgical tool guide, such that the surgical tool guide is in a pre-defined spatial arrangement relative to the three-dimensional tissue contacting geometry, and wherein the surgical tool guide comprises at least two cylindrical drill guides configured to guide a formation of pin receiving openings in the femur of the particular patient;

b. placing the surgical instrument on the distal-anterior portion of the particular patient'"'"'s femur; and

c. using the surgical tool guide to guide a tool.

14. The method of claim 13, wherein the surgical tool guide further comprises a hole extending through a body of the surgical instrument.

15. The method of claim 13, wherein the surgical tool guide further comprises a slot extending through a body of the surgical instrument.

16. The method of claim 13, wherein the surgical tool guide further comprises a plurality of holes extending through a body of the surgical instrument.

17. The method of claim 13, wherein the surgical tool guide further comprises at least one hole extending through a body of the surgical instrument, the at least one hole configured to guide a drill for drilling an opening in the femur of the particular patient.

18. The method of claim 13, wherein the surgical tool guide further comprises at least one hole extending through a body of the instrument, the at least one hole configured to facilitate positioning at least one pin in the femur of the particular patient.

19. The method of claim 13, further comprising positioning at least one pin in the femur of the particular patient.

20. The method of claim 13, wherein the step of using the surgical tool guide to guide a tool comprises drilling at least one hole in the particular patient'"'"'s femur.

21. The method of claim 13, further comprising scraping away articular cartilage.

22. The method of claim 13, further comprising implanting an implant.

23. The method of claim 13, further comprising applying cement.