Paragraph Number

130

In the illustrated embodiment, the surgical device 200c can use one of the planar surfaces of the housing 220 to determine a horizontal plane and/or reference axis 130. For example, the electronic circuit 300/400 can operate in a calibration mode to determine the horizontal plane and/or reference axis 130. The calibration mode can include placement of the housing 220 in a specific orientation, a known orientation, from which the electronic circuit 300/400 can determine the horizontal plane and/or reference axis 130 which in turn can be used to measure or determine orientation angles from either of the horizontal plane and/or reference axis 130. In one embodiment, the electronic circuit 300/400 may determine an orientation angle (e.g., angle A and/or angle B) based on a reference axis 130 perpendicular to a horizontal plane that parallel to a ML axis 122. The horizontal plane may be defined by one of the surfaces 222, 224, 226, 228, 230, 232 of the housing 220 during a calibration mode of the electronic circuit 300/400.

Added by DJM 1 2022