Patent ID: 9492181
Filing Date: 2016-11-15
CPC Classification: A61B

Claim Text:
1. A surgical instrument, comprising: a surgical instrument housing; an instrument working portion adapted to engage a portion of a patient to perform a surgical operation, wherein the instrument working portion extends along a first axis extending from the surgical instrument housing; a measurement system for determining, with respect to a reference point, a depth of the instrument working portion during the surgical operation; a first sensor of the measurement system that is disposed internally to the surgical instrument housing for outputting a first signal representative of a displacement, with respect to the reference point, of the instrument working portion, wherein the first sensor comprises a displacement sensing arm having a first portion extending from a passage extending through the surgical instrument housing along a second axis parallel to the first axis, and a second portion extending from the first portion toward the instrument working portion in a plane intersecting the first axis and the second axis, wherein the second portion is adapted for releasable engagement with a bushing member that is constrainedly movable relative to the instrument working portion along the first axis; and a light emitter disposed on a distal face of the surgical instrument housing adapted to emit light in a direction toward the patient when the instrument working portion is engaged with the portion of the patient to perform the surgical operation, wherein the light emitter is offset from the plane intersecting the first axis and the second axis.