CUSTOMIZED PATIENT-SPECIFIC ORTHOPAEDIC SURGICAL INSTRUMENT

• US 20190388240A1
• Filed: 06/26/2018
• Published: 12/26/2019
• Est. Priority Date: 06/26/2018
• Status: Active Grant

• Current Assignee: Depuy Synthes Products Incorporated (Johnson & Johnson)
• Original Assignee: Depuy Synthes Products Incorporated (Johnson & Johnson)
• Inventors: COURTIS, R. Patrick, METELUES, Francis
• Granted Patent: US 11,051,829 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 17/154 for preparing bone for knee prosthesis
• CPC Class Codes: A61B 17/155 Cutting femur
• CPC Class Codes: A61B 17/1746 for the acetabulum
• CPC Class Codes: A61B 17/1764 for the knee
• CPC Class Codes: A61B 17/56 Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
• 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 2034/102 Modelling of surgical devices, implants or prosthesis
• CPC Class Codes: A61B 2034/108 Computer aided selection or customisation of medical implants or cutting guides
• CPC Class Codes: A61F 2/4607 of hip femoral endoprostheses
• CPC Class Codes: A61F 2/4609 of acetabular cups
• CPC Class Codes: A61F 2/461 of knees

Abstract

An orthopaedic surgical instrument includes a customized patient-specific surgical instrument having a body. A cutting guide slot extends through the body. A pair of first arms extends posteriorly from the body. Each arm includes a first customized patient-specific negative contour configured to receive a portion of a first corresponding positive contour of one of a patient'"'"'s femoral condyles. A second arm extends proximally from the body. The second arm has a second customized patient-specific negative contour configured to receive a portion of a second corresponding positive contour of an anterior surface of the patient'"'"'s femur. A method of performing a surgical procedure is also disclosed.

Claims

1. An orthopaedic surgical instrument, comprising:

a customized patient-specific surgical instrument comprising;

a body,

a cutting guide slot extending through the body,

a pair of first arms extending posteriorly from the body, each arm including a first customized patient-specific negative contour configured to receive a portion of a first corresponding positive contour of one of a patient'"'"'s femoral condyles,

a second arm extending proximally from the body, the second arm having a second customized patient-specific negative contour configured to receive a portion of a second corresponding positive contour of an anterior surface of the patient'"'"'s femur, and

an alignment slot extending through the body and the proximally extending arm and positioned to align with a deepest portion of a trochlear groove of the patient'"'"'s femur when the customized patient-specific surgical instrument is positioned on the patient'"'"'s femur.

2. The orthopaedic surgical instrument of claim 1, wherein the alignment slot extends transverse to the cutting guide slot.

3. The orthopaedic surgical instrument of claim 1, wherein the body has a planar distal surface and a planar proximal surface, the alignment slot including an opening extending through the distal surface and an opening extending through the proximal surface.

4. The orthopaedic surgical instrument of claim 1, wherein the second arm includes a trunk extending from the body and a flange attached to a proximal end of the trunk, wherein the flange includes a portion of the second customized patient-specific negative contour.

5. The orthopaedic surgical instrument of claim 4, wherein the trunk includes an anterior surface and a posterior surface, wherein the alignment slot includes an opening extending through the anterior surface and an opening extending through the posterior surface.

6. The orthopaedic surgical instrument of claim 5, wherein the opening extending through the anterior surface and the opening extending through the posterior surface are curved.

7. The orthopaedic surgical instrument of claim 1, wherein the customized patient-specific surgical instrument includes a boss attached to, and extending from, the body to a free end spaced apart from the body, the boss including an opening that is defined in its free end.

8. The orthopaedic surgical instrument of claim 7, including a guide hole extending through the boss.

9. An orthopaedic surgical instrument, comprising:

a customized patient-specific surgical instrument comprising;

a body,

a cutting guide slot extending through the body,

a pair of first arms extending posteriorly from the body, each arm including a first customized patient-specific negative contour configured to receive a portion of a first corresponding positive contour of one of a patient'"'"'s femoral condyles, and

an alignment slot extending through the body transverse to the cutting guide slot and positioned to align with a deepest portion of a trochlear groove of the patient'"'"'s femur when the customized patient-specific surgical instrument is positioned on the patient'"'"'s femur.

10. The orthopaedic surgical instrument of claim 9, wherein the body has a planar distal surface and a planar proximal surface, the alignment slot including an opening extending through the distal surface and an opening extending through the proximal surface.

11. The orthopaedic surgical instrument of claim 9, wherein the customized patient-specific surgical instrument includes a boss attached to, and extending from, the body to a free end spaced apart from the body, the boss including an opening that is defined in its free end.

12. The orthopaedic surgical instrument of claim 11, including a guide hole extending through the boss.

13. The orthopaedic surgical instrument of claim 9, including a second arm extending proximally from the body, the second arm including a trunk extending from the body and a flange attached to a proximal end of the trunk.

14. The orthopaedic surgical instrument of claim 13, wherein the second arm has a second customized patient-specific negative contour configured to receive a portion of a second corresponding positive contour of an anterior surface of the patient'"'"'s femur.

15. The orthopaedic surgical instrument of claim 14, wherein the flange includes a portion of the second customized patient-specific negative contour.

16. The orthopaedic surgical instrument of claim 13, wherein the trunk includes an anterior surface and a posterior surface, wherein the alignment slot includes an opening extending through the anterior surface and an opening extending through the posterior surface.

17. The orthopaedic surgical instrument of claim 16, wherein the opening extending through the anterior surface and the opening extending through the posterior surface are curved.

18. A method of performing an orthopaedic surgical procedure, the method comprising:

placing a visual marking on a surface defining a deepest portion of a trochlear groove of a patient'"'"'s femur,

placing a customized patient-specific surgical instrument on the patient'"'"'s femur, and

aligning an alignment slot extending through the customized patient-specific surgical instrument with the visual marking on the surface of the patient'"'"'s femur to position the customized patient-specific surgical instrument on the patient'"'"'s femur.

19. The method of claim 18 including aligning an alignment slot extending through a body of the customized patient-specific surgical instrument with the visual marking.

20. The method of claim 18 including aligning an alignment slot extending through an arm of the customized patient-specific surgical instrument with the visual marking.