Patent ID: 11957445
Assignee: MEDTRONIC NAVIGATION, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 8:
9. A system for maintaining a registration of a subject space to an image space, comprising:
a localizer;
a dynamic reference frame having a tracking device configured to be tracked in the subject space with the localizer and a mounting portion configured to be fixed to a subject, wherein the tracking device is configured to be placed in a first configuration in the subject space relative to the localizer and a second configuration in the subject space relative to the localizer; and
a processor system configured to:
determine the registration of the subject space to the image space with the tracking device in the first configuration;
determine an adjustment factor that defines a difference between the first configuration and the second configuration based at least on a plurality of known configurations stored with a memory; and
maintain the registration of the subject space to the image space after a change to the second configuration at least by application of the adjustment factor.