IP Library Granted Patent US 8,903,530
Granted Patent B2
US 8,903,530 · App. 14/020,378 · Granted Dec 2, 2014

Pre-operative planning and manufacturing method for orthopedic procedure

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Quick Facts
Patent No.
US 8,903,530
App. No.
14/020,378
Granted
Dec 2, 2014
Kind
B2
Abstract

A pre-operative planning and manufacturing method for orthopedic surgery includes obtaining pre-operative medical image data representing a joint portion of a patient. The method also includes constructing a three-dimensional digital model of the joint portion and manufacturing a patient-specific alignment guide for the joint portion from the three-dimensional digital model of the joint portion when the image data is sufficient to construct the three-dimensional digital model of the joint portion. The patient-specific alignment guide has a three-dimensional patient-specific surface pre-operatively configured to nest and closely conform to a corresponding surface of the joint portion of the patient in only one position relative to the joint portion. The method further includes determining, from the image data, a size of a non-custom implant to be implanted in the patient and assembling a surgical kit including the non-custom implant when there is insufficient image data to construct the patient-specific alignment guide therefrom.

Claims (35)

1. A pre-operative planning and manufacturing method for orthopedic surgery comprising:

obtaining pre-operative medical image data representing a joint portion of a patient;

constructing a three-dimensional digital model of the joint portion and manufacturing a patient-specific alignment guide for the joint portion from the three-dimensional digital model of the joint portion when the image data is sufficient to construct the three-dimensional digital model of the joint portion, the patient-specific alignment guide having a three-dimensional patient-specific surface pre-operatively configured to nest and closely conform to a corresponding surface of the joint portion of the patient in only one position relative to the joint portion; and

when there is insufficient data to construct the patient-specific alignment guide therefrom:

determining, from the image data, a size of a non-custom implant to be implanted in the patient;

selecting the non-custom implant from a group of non-custom implants of different sizes; and

assembling a surgical kit containing the non-custom implant and a trial implant that corresponds to the non-custom implant.

2. The method of claim 1 , further comprising manufacturing the non-custom implant.

3. The method of claim 1 , further comprising manufacturing a patient-specific implant after constructing the three-dimensional digital model of the joint portion.

4. The method of claim 1 , further comprising determining, from the image data, a dimension of a non-custom surgical instrument configured for use during surgery for implanting the non-custom implant.

5. The method of claim 4 , wherein the non-custom surgical instrument is a resection tool with a guide surface configured for guiding a cutting tool during resection of a bone of the joint portion.

6. The method of claim 4 , further comprising selecting the non-custom surgical instrument from a plurality of non-custom surgical instruments of different dimensions.

7. The method of claim 1 , further comprising manufacturing the trial implant.

8. The method of claim 1 , further comprising including in the surgical kit a non-custom surgical instrument configured for use during surgery for implanting the non-custom implant.

9. The method of claim 1 , wherein the joint portion is a knee joint and the non-custom implant is at least one of a femoral implant and a tibial implant.

10. A pre-operative planning and manufacturing method for orthopedic surgery comprising:

pre-operatively obtaining medical image data that is readable on a computer, the medical image data containing a plurality of two-dimensional medical images of a joint portion of a patient;

pre-operatively constructing a three-dimensional digital model of the joint portion from the plurality of two-dimensional medical images and displaying the three-dimensional digital model on a display of the computer when the plurality of two-dimensional medical images are sufficient to construct the three-dimensional digital model of the joint portion and a corresponding a patient-specific alignment guide;

selecting, based on the image data, a non-custom implant to be implanted in the patient and providing the non-custom implant when the plurality of two-dimensional medical images are insufficient for use in constructing a patient-specific alignment guide having a three-dimensional patient-specific surface configured to nest and closely conform to a corresponding surface of the joint portion of the patient relative to the joint portion, the non-custom implant chosen from a group of non-custom implants of different sizes; and

assembling a surgical kit including the non-custom implant and a surgical instrument for use with the non-custom implant.

11. The method of claim 10 , further comprising manufacturing the patient-specific alignment guide when the plurality of two-dimensional medical images are sufficient, the patient-specific alignment guide having a three-dimensional patient-specific surface pre-operatively configured to nest and closely conform to a corresponding surface of the joint portion of the patient in only one position relative to the joint portion, and further comprising manufacturing the selected non-custom implant when the plurality of two-dimensional medical images are insufficient to construct the patient-specific alignment guide therefrom.

12. The method of claim 10 , further comprising manufacturing a patient-specific implant after constructing the three-dimensional digital model of the joint portion.

13. The method of claim 10 , wherein the surgical instrument is a non-custom surgical instrument, the method further comprising determining, from the medical image data, a dimension of the non-custom surgical instrument configured for use during surgery for implanting the non-custom implant.

14. The method of claim 13 , wherein the non-custom surgical instrument is a resection tool with a guide surface configured for guiding a cutting tool during resection of a bone of the joint portion.

15. The method of claim 13 , further comprising selecting the non-custom surgical instrument from a plurality of non-custom surgical instruments of different dimensions.

16. The method of claim 10 , further comprising manufacturing a trial implant that corresponds to the non-custom implant.

17. The method of claim 10 , further comprising including in the surgical a trial implant that corresponds to the non-custom implant.

18. The method of claim 10 , wherein the joint portion is a knee joint and the non-custom implant is at least one of a femoral implant and a tibial implant.

19. The method of claim 18 , wherein the non-custom implant is selected from one of full knee replacement implant and partial knee replacement implant.

20. A pre-operative planning and manufacturing method for orthopedic surgery of a knee joint of a patient comprising:

obtaining pre-operative medical image data representing the knee joint, the medical image data including a plurality of two-dimensional images of the knee joint;

constructing a three-dimensional digital model of the knee joint and manufacturing a patient-specific alignment guide for the knee joint from the three-dimensional digital model of the knee joint when the plurality of two-dimensional images of the knee joint is sufficient to construct the three-dimensional digital model of the knee joint, the patient-specific alignment guide having a three-dimensional patient-specific surface pre-operatively configured to nest and closely conform to a corresponding surface of the knee joint of the patient in only one position relative to the knee joint;

determining, based on at least one of the two-dimensional images of the knee joint, a size of a non-custom implant to be implanted in the knee joint of the patient when there is insufficient image data to construct the patient-specific alignment guide therefrom;

determining a dimension for a non-custom surgical instrument configured for implanting the non-custom implant when there is insufficient image data to construct the patient-specific alignment guide therefrom; and

assembling a kit containing a non-custom implant and a non-custom surgical instrument when there is insufficient image data to construct the patient-specific alignment guide therefrom.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 18, 2013
From: METZGER, ROBERT
To: BIOMET MANUFACTURING CORPORATION
Reel/Frame 031805/0199 →
CHANGE OF NAME Recorded Dec 18, 2013
From: BIOMET MANUFACTURING CORPORATION
To: BIOMET MANUFACTURING, LLC
Reel/Frame 031805/0378 →