Methods, systems, and devices for designing and manufacturing a spinal rod

Patent metadata

Field	Value
Publication number	US-10433913-B2
Application number	US-201916419956-A
Country	US
Kind code	B2
Filing date	May 22, 2019
Priority date	Oct 18, 2013
Publication date	Oct 8, 2019
Grant date	Oct 8, 2019

Abstract

According to the invention, the process includes the steps of: a) taking a sagittal preoperative x-ray of the vertebral column of the patient to be treated, extending from the cervical vertebrae to the femoral heads; b) on that x-ray, identifying points on S1, S2, T12 et C7; c) depicting, on the said x-ray, curved segments beginning at the center of the plate of Si et going to the center of the plate of C7; e) identifying, on that x-ray, the correction(s) to be made to the vertebral column, including the identification of posterior osteotomies to make; f) pivoting portions of said x-ray relative to other portions of that x-ray, according to osteotomies to be made; g) performing, on said x-ray, a displacement of the sagittal curvature segment extending over the vertebral segment to be corrected; h) from a straight vertebral rod (TV), producing the curvature of that rod according to the shape of said sagittal curvature segment in said displacement position.

First claim

What is claimed is:

1. A system for manufacturing a patient-specific spinal rod, the system comprising:
a manufacturing provider apparatus configured for manufacturing the patient-specific spinal rod based at least in part on preoperative data instructions for manufacturing the patient-specific spinal rod; and
an electronic interface configured for electronically receiving the preoperative data instructions for manufacturing the patient-specific spinal rod, wherein the electronic interface is configured to transfer the preoperative data instructions to the manufacturing provider apparatus, wherein the received preoperative data instructions for manufacturing the patient-specific spinal rod are generated by:
modifying a first portion of one or more preoperative images of a vertebral column of a patient;
modifying a second portion of the one or more preoperative images of the vertebral column of the patient;
determining a first curvature of a first curved segment along the vertebral column of the patient on the one or more modified preoperative images, wherein the first curved segment comprises a portion of the vertebral column below a reference point; and
determining a second curvature of a second curved segment along the vertebral column of the patient on the one or more modified preoperative images, wherein the second curved segment comprises a portion of the vertebral column above the reference point, wherein the first curvature is different from the second curvature.

2. The system of claim 1 , wherein the first curved segment comprises sacral vertebrae of the vertebral column.

3. The system of claim 1 , wherein the first curved segment comprises one or more vertebrae between L1 to L5.

4. The system of claim 1 , wherein the first curved segment comprises one or more vertebrae between a first vertebra of a sacrum and a lower plate of a reference dorsal vertebra.

5. The system of claim 4 , wherein the first curved segment is tangent to a straight line from a center of a second vertebra of the sacrum to a center of the first vertebrae of the sacrum.

6. The system of claim 1 , wherein the second curved segment comprises cervical vertebrae of the vertebral column.

7. The system of claim 1 , wherein the second curved segment comprises one or more vertebrae between C6 to T11.

8. The system of claim 1 , wherein the one or more preoperative images of the vertebral column of the patient comprises one or more sagittal x-ray images.

9. The system of claim 1 , wherein the one or more preoperative images of the vertebral column of the patient comprises one or more sagittal x-ray images and one or more frontal x-ray images.

10. The system of claim 1 , wherein the electronic interface comprises a computer processor and an electronic storage medium.

11. A system for manufacturing a patient-specific spinal rod, the system comprising:
a manufacturing provider apparatus configured for producing the patient-specific spinal rod based at least in part on preoperative data instructions for producing the patient-specific spinal rod; and
an interface configured for receiving the preoperative data instructions for producing the patient-specific spinal rod, wherein the interface is configured to transfer the preoperative data instructions to the manufacturing provider apparatus, wherein the received preoperative data instructions for producing the patient-specific spinal rod are generated by:
modifying a first portion of one or more preoperative images of a vertebral column of a patient;
modifying a second portion of the one or more preoperative images of the vertebral column of the patient;
determining a first curvature of a first curved segment along the vertebral column of the patient on the one or more modified preoperative images, wherein the first curved segment comprises a portion of the vertebral column below a reference point; and
determining a second curvature of a second curved segment along the vertebral column of the patient on the one or more modified preoperative images, wherein the second curved segment comprises a portion of the vertebral column above the reference point, wherein the first curvature is different from the second curvature.

12. The system of claim 11 , wherein the manufacturing apparatus is configured for manufacturing the patient-specific spinal rod by bending.

13. The system of claim 11 , wherein the first curved segment comprises sacral vertebrae of the vertebral column.

14. The system of claim 11 , wherein the first curved segment comprises one or more vertebrae between L1 to L5.

15. The system of claim 14 , wherein the first curved segment comprises one or more vertebrae between a first vertebra of a sacrum and a lower plate of a reference dorsal vertebra.

16. The system of claim 15 , wherein the first curved segment is tangent to a straight line from a center of a second vertebra of the sacrum to a center of the first vertebrae of the sacrum.

17. The system of claim 11 , wherein the second curved segment comprises cervical vertebrae of the vertebral column.

18. The system of claim 11 , wherein the second curved segment comprises one or more vertebrae between C6 to T11.

19. The system of claim 11 , wherein the one or more preoperative images of the vertebral column of the patient comprises one or more sagittal x-ray images or frontal x-ray images.

20. The system of claim 11 , wherein the interface comprises a computer processor and an electronic storage medium.

Assignees

• Medicrea Int

Inventors

• Mosnier Thomas
• Ryan David

Classifications

• G06T7/0012

  Biomedical image inspection · CPC title

• A61B2017/568

  produced with shape and dimensions specific for an individual patient · CPC title

• G06T2207/10116

  X-ray image · CPC title

• A61B2017/00526

  Methods of manufacturing · CPC title

• A61B17/7011 Primary

  Longitudinal element being non-straight, e.g. curved, angled or branched (adjustable length longitudinal elements A61B17/7014; A61B17/7019 takes precedence, e.g. coil springs) · CPC title