US 12,597,153 B2Granted

Method for optically calibrating an instrument drill tip

AssigneeX-Nav Technologies, LLC

InventorsScott A. Merritt, Justin Blaber, Sarah O'Brien

Life of this patent

Estimating the term…

Loading patent…

Abstract

A visual guidance system for use in a surgical procedure include a calibration operation of a tip of a surgical drill. In particular, the system includes capturing images of a drill tip and generating a reconstruction volume shape of the drill tip to enable tracking of the drill tip. The system captures images of the drill tip in tilting motion to determine cutting edge contour data of the drill tip. The system further captures images of the drill tip in rotation and identifies point cloud data of the drill tip. The system further includes generating a three-dimensional surface data of the drill tip, a cutting plane, and a cutting edge contour of the drill tip. Given the three dimensional surface data and plane data, the system further generates guidance data for providing a navigation on surgical procedure using three-dimensional graphical representation of the surgical drill.

Claims20

Dependent claims

A method of calibrating a tip on an instrument using a microprocessor system, the method comprising steps of:

capturing a first set of image data using at least one camera in communication with the microprocessor system, wherein the first set of image data includes the instrument, and the instrument includes the tip and a stem connected to the tip;
generating, based on the first set of image data, a reconstruction volume shape of the tip;
capturing a second set of image data of the tip of the instrument while the tip is moved using the at least one camera;
determining, based on a plane along an edge of the tip captured in the second set of image data and the reconstruction volume shape, cutting edge contour data of the tip;
capturing a third set of image data of the tip of the instrument while the tip is moved using the at least one camera;
generating, based on the third set of image data, three-dimensional tip surface data of the tip;
generating, based on the three-dimensional tip surface data of the tip, a set of cutting planes;
generating, based on the set of cutting planes, guidance data for use in navigating a surgical procedure using the instrument;
and
storing the guidance data in a tip database on a non-transitory computer-readable medium.

7 more elements

A system for calibrating a tip of an instrument, the system comprises a non-transitory computer-readable recording medium and a microprocessor, the computer-readable recording medium including instructions that cause the processor to execute operations comprising:

capturing a first set of image data using at least one camera, wherein the first set of image data includes the instrument, and the instrument includes the tip and a stem connected to the tip;
generating, based on the first set of image data, a reconstruction volume shape of the tip;
capturing a second set of image data of the tip of the instrument while the tip is moved using the at least one camera;
determining, based on a plane along an edge of the tip captured in the second set of image data and the reconstruction volume shape, cutting edge contour data of the tip;
capturing a third set of image data of the tip of the instrument while the tip is moved using the at least one camera;
generating, based on the third set of image data, three-dimensional tip surface data of the tip;
generating, based on the three-dimensional tip surface data of the tip, a set of cutting planes;
generating, based on the set of cutting planes, guidance data for use in navigating a surgical procedure using the instrument;
and
storing the guidance data in a tip database.

7 more elements

A device for calibrating a tip of an instrument, the device comprises a non-transitory computer-readable recording medium and a microprocessor, the computer-readable recording medium including instructions that cause the processor to execute operations comprising:

capturing a first set of image data using at least one camera, wherein the first set of image data includes the instrument, and the instrument includes the tip and a stem connected to the tip;
generating, based on the first set of image data, a reconstruction volume shape of the tip;
capturing a second set of image data of the tip of the instrument while the tip is moved using the at least one camera;
determining, based on a plane along an edge of the tip captured in the second set of image data and the reconstruction volume shape, cutting edge contour data of the tip;
capturing a third set of image data of the tip of the instrument while the tip is moved using the at least one camera;
generating, based on the third set of image data, three-dimensional tip surface data of the tip;
generating, based on the three-dimensional tip surface data of the tip, a set of cutting planes;
generating, based on the set of cutting planes, guidance data for use in navigating a surgical procedure using the instrument;
and
storing the guidance data in a tip database.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/659,793Filed 9 May 2024
Published: US 2025/0349021 A113 Nov 2025
Granted: 7 Apr 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

G06T 7/596
From stereo images: from three or more stereo images
A61B 17/1615
Component parts: drill bits, i.e. rotating tools extending from a handpiece to contact the worked material
A61B 34/10
Computer-aided surgery; Manipulators or robots specially adapted for use in surgery: computer-aided planning, simulation or modelling of surgical…
A61B 34/20
Computer-aided surgery; Manipulators or robots specially adapted for use in surgery: surgical navigation systems; Devices for tracking or guiding…