Systems and methods for performing spine surgery

Patent metadata

Field	Value
Publication number	US-10188480-B2
Application number	US-201715440991-A
Country	US
Kind code	B2
Filing date	Feb 23, 2017
Priority date	Jan 22, 2016
Publication date	Jan 29, 2019
Grant date	Jan 29, 2019

Abstract

Systems and methods for a spinal surgical procedure are described. Specifically systems and methods for calculating global spinal alignment are described.

First claim

We claim:

1. A system for global alignment of a spine during spinal surgery, the system comprising an imaging device, a spatial tracking system, a bending device, and, a control unit configured to:
receive a planned target value of one or more spinal parameters;
based on the planned target value of the one or more spinal parameters, determine one or more ranges corresponding to a desired correction in at least one of (i) a sagittal alignment and (ii) a coronal alignment of the spine;
capture, via the imaging device and the spatial tracking system, one or more intraoperative fluoroscopy images;
measure an intraoperative value of the one or more spinal parameters according to the one or more captured intraoperative fluoroscopy images;
compare the intraoperative value of the one or more spinal parameters with the planned target value of the spinal parameters;
based on the comparison, determine that the intraoperative value of the one or more spinal parameters is within the one or more ranges and measure a location of one or more screws; and
calculate an instruction to bend a rod, via the bending device, to the location of the one or more screws.

2. A system for use during a surgical procedure, the system comprising:
an imaging device;
a rod bending device;
a control unit configured to:
obtain one or more preoperative measurements of an anatomical parameter of a patient;
obtain one or more planned target measurements of the anatomical parameter;
based on the planned target measurements of the anatomical parameter, determine one or more ranges corresponding to a desired correction in at least one of (i) a sagittal alignment and (ii) a coronal alignment of the spine;
obtain an intraoperative image from the imaging device;
measure an intraoperative measurement of the anatomical parameter; and
determine that the intraoperative measurement of the anatomical parameter is within the one or more ranges and calculate an instruction for bending a surgical rod.

3. The system of claim 2 , wherein the anatomical parameter is a chin brow vertical angle.

4. The system of claim 3 , wherein the chin brow axis is an angle of a patient's gaze relative to a horizontal position.

5. The system of claim 4 , wherein the control unit displays to a user a color indication of the angle of the gaze.

6. The system of claim 2 , wherein the anatomical parameter is a parameter correlated to a health related quality of life score.

7. The system of claim 2 , wherein the anatomical parameter is a parameter correlated to the alignment of a patient's head over the patient's pelvis.

8. A method for assessing global alignment of the spine during a surgical procedure, the method comprising:
inputting a planned target value of one or more spinal parameters into a control unit;
based on the planned target value of the one or more spinal parameters, determining one or more ranges corresponding to a desired correction in at least one of (i) a sagittal alignment and (ii) a coronal alignment of the spine;
capturing one or more intraoperative fluoroscopy images into the control unit;
measuring an intraoperative value of the one or more spinal parameters according to the one or more captured intraoperative fluoroscopy images;
comparing the intraoperative value of the one or more spinal parameters with the planned target value of the spinal parameters;
based on the comparison, determining that the intraoperative value of the one or more spinal parameters is within the one or more ranges and measuring a location of one or more screws;
calculating an instruction to bend a rod to the location of the one or more screws; and
bending the rod according to the instruction.

9. The method of claim 8 , wherein at least one of the spinal parameters is a chin brow vertical angle.

10. The method of claim 8 , wherein the method further comprises locating a point on the brow, locating a point on the chin, calculating a line between the points, and calculating an angle between the line and a vertical axis.

11. The method of claim 8 further comprising, calculating a preoperative value of the one or more spinal parameters.

12. The method of claim 8 further comprising, calculating a second target value for the one or more spinal parameters based on the comparison of the intraoperative value with the planned target value.

13. The method of claim 8 , wherein at least one of the spinal parameters is a parameter correlated to a health related quality of life score.

14. The method of claim 8 , wherein the spinal parameter is a parameter correlated to the alignment of a patient's head over the patient's pelvis.

15. The method of claim 8 , wherein at least one of the spinal parameters is cervical sagittal vertical axis.

16. The method of claim 8 , wherein at least one of the spinal parameters is T1 slope.

17. The method of claim 8 , wherein at least one of the spinal parameters is cervical lordosis.

Assignees

• Nuvasive Inc

Inventors

• Scholl Thomas U
• Sutterlin Autumn
• Blaylock Elizabeth
• Blaskiewicz Donald J
• Wright Neill M
• Isaacs Robert E

Classifications

• A61B17/8863

  Apparatus for shaping or cutting osteosynthesis equipment by medical personnel · CPC title

• A61B90/00

  Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges · CPC title

• A61B2034/101

  Computer-aided simulation of surgical operations · CPC title

• A61B18/18

  by applying electromagnetic radiation, e.g. microwaves · CPC title

• A61B5/0082

  adapted for particular medical purposes · CPC title