Marker-based tool tracking

摘要

An ophthalmic surgical tool has a marker positioned at a distal portion of the ophthalmic surgical tool. The distal portion of the ophthalmic surgical tool is inserted into an eye along with the marker to perform surgeries in the eye. An imaging device captures images of the fundus of the eye including the distal portion of the ophthalmic surgical tool. An image processor processes the captured images to identify and extract the marker from the captured images. The marker has a high-contrast feature in a visible light or infrared light range or other spectral ranges. Thus, the image processor may identify and extract the marker from the captured images. Indicators may be generated based on the marker and be overlaid with the captured or processed images of the fundus and displayed to a user to indicate surgical information to the user.

主权项

1. An ophthalmic surgical tool tracking system comprising:
an ophthalmic surgical tool comprising a distal portion configured to be inserted into an eye; a marker positioned at the distal portion of the ophthalmic surgical tool, the marker including a pattern; and a tool position detection system comprising:
a light source configured to introduce an imaging light into a fundus of the eye, the light source configured to be inserted into the eye;an imaging device configured to receive the imaging light reflected from the fundus and capture an image of the fundus along with the distal portion of the ophthalmic surgical tool inserted into the eye; anda processor configured to determine a position and an orientation of the marker in the captured image of the fundus based on the pattern, wherein an orientation of the pattern in the captured image indicates the orientation of the marker positioned at the distal portion of the ophthalmic surgical tool.