Paragraph Number

123

In certain embodiments, the measurement circuit 330 uses an orientation sensor 510. The orientation sensor 510 may determine a horizontal plane parallel to the ground and/or an orientation of the orientation sensor 510 relative to the horizontal plane. Such an orientation sensor 510 can be used by the measurement circuit 330 to determine the reference axis and/or one or more orientation sensors 510 may be used to determine an orientation of the surgical device 200 relative to the reference axis. One example of an orientation sensor 510 may be a mercury switch, such as a mercury tilt switch.

Added by DJM 1 2022