Spinal implant measuring system and method
First Claim
1. A method for measuring a spinal implant, the method comprising the steps of:
- providing a device including a gauge configured to measure an angle in a measuring plane and extending to an engagement surface;
disposing the engagement surface with a first selected position of an implant or an anatomy, the first selected position being disposed at a first orientation;
calibrating the gauge to a zero angle measurement at the first orientation;
disposing the engagement surface with a second selected position of the implant or the anatomy, the second selected position being disposed at a second orientation;
measuring an angle of the second orientation relative to the first orientation such that the gauge determines the angle relative to the zero angle measurement, andmanually manipulating the anatomy to dispose the second selected position in the second orientation; and
verifying a selected contour of the implant or anatomy by comparing the measured angle to the selected contour in situ.
1 Assignment
0 Petitions
Accused Products
Abstract
A method for measuring a spinal implant comprises the steps of: providing a device including a gauge configured to measure an angle in a measuring plane and extending to an engagement surface; disposing the engagement surface with a first selected position of an implant or an anatomy, the first selected position being disposed at a first orientation; calibrating the gauge to a zero angle measurement at the first orientation; disposing the engagement surface with a second selected position of the implant or the anatomy, the second selected position being disposed at a second orientation; and measuring an angle of the second orientation relative to the first orientation such that the gauge determines the angle relative to the zero angle measurement. Various devices are disclosed.
162 Citations
16 Claims
-
1. A method for measuring a spinal implant, the method comprising the steps of:
-
providing a device including a gauge configured to measure an angle in a measuring plane and extending to an engagement surface; disposing the engagement surface with a first selected position of an implant or an anatomy, the first selected position being disposed at a first orientation; calibrating the gauge to a zero angle measurement at the first orientation; disposing the engagement surface with a second selected position of the implant or the anatomy, the second selected position being disposed at a second orientation; measuring an angle of the second orientation relative to the first orientation such that the gauge determines the angle relative to the zero angle measurement, and manually manipulating the anatomy to dispose the second selected position in the second orientation; and verifying a selected contour of the implant or anatomy by comparing the measured angle to the selected contour in situ. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A method for measuring a spinal implant geometry, the method comprising the steps of:
-
surgically treating a spine disorder including connecting a spinal rod at an interface with vertebrae in a predetermined orientation; providing a gauge extending to an engagement surface, the engagement surface defining an implant cavity configured for disposal of the spinal rod; disposing the engagement surface with a first selected position of the spinal rod such that the spinal rod is disposed in the implant cavity, the first selected position being disposed at a first orientation of the spinal rod; calibrating the gauge to a zero angle measurement at the first orientation; disposing the engagement surface with a second selected position of the spinal rod such that the spinal rod is disposed in the implant cavity, the second selected position being disposed at a second orientation of the spinal rod; measuring an angle of the second orientation relative to the first orientation such that the gauge determines the angle relative to the zero angle measurement; adjusting the spinal rod based on the comparison of the angle to the predetermined orientation; derotating the vertebrae a selected amount of axial derotation; and verifying the amount of axial derotation by comparing the measured angle to the selected amount of axial derotation. - View Dependent Claims (14, 15, 16)
-
Specification