# US 11,076,919 B1 · Surgical tool position tracking and scoring system

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- Number: US 11,076,919 B1
- Document ID: US11076919B1
- Status: Granted
- Kind: B1
- Application number: 15/985,369
- Filed: 2018-05-21
- Granted: 2021-08-03
- Earliest claimed: 2017-05-19
- Assignees: Smith & Nephew, Inc.
- Applicants: Smith & Nephew, Inc.
- Inventors: Constantinos Nikou
- Web page: https://patentgrep.com/patent/US11076919B1

## CPC

- A61B 34/20: Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
- A61B 6/12: Arrangements for detecting or locating foreign bodies
- A61B 90/39: {Markers, e.g. radio-opaque or breast lesions markers}
- A61B 17/147: {with circularly moving saw blades, i.e. non-reciprocating saw blades}
- A61B 17/16: Instruments for performing osteoclasis; Drills or chisels for bones; Trepans {(arthroscopic bone cutters A61B17/320016)}
- A61B 2034/2051: {Electromagnetic tracking systems}
- A61B 2034/2055: {Optical tracking systems}
- A61B 2090/0811: {for the position of a particular part of an instrument with respect to the rest of the instrument, e.g. position of the anvil of a stapling instrument}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A system and method for tracking position and orientation of a surgical tool during a surgical procedure and providing feedback to a user are described. For example the system includes a surgical tool configured to perform at least a portion of the surgical procedure, a tracking system configured to monitor and record position information related to the surgical tool, a processing system, and a display. The processing system can be configured to receive the position information, determine optimal position information for the surgical tool during the surgical procedure, compare the received position information against the optimal position information to determine a conformance level for the user, and generate a user performance record. The display can be configured to receive and display the user performance record.

## Claims

### Claim 1

A method for tracking position and orientation of a surgical tool having distal and proximal ends during a surgical procedure and providing feedback to a user, the method comprising:
receiving, by a processing system operably connected to a tracking system, position information for at least one tracking device affixed to the surgical tool from the tracking system;
determining, by the processing system, a location for the distal end and the proximal end of the surgical tool in three-dimensional space based on the received position information for the at least one tracking device to identify the position and orientation of the surgical tool;
comparing, by the processing system, the identified position and orientation of the surgical tool to optimal position and orientation data to determine a conformance level for the user for the surgical procedure; and
generating, by the processing system, a user performance record based on at least a portion of the conformance level.

### Claim 2 (depends on 1)

The method of claim 1, further comprising:
determining, by the processing system, an actual cutting rate for the surgical tool during the surgical procedure;
comparing, by the processing system, the actual cutting rate to an optimized cutting rate for the surgical tool to determine a user cutting performance; and
updating, by the processing system, the user performance record to include the user cutting performance.

### Claim 3 (depends on 1)

The method of claim 1, wherein the surgical tool is a rotating cutting device.

### Claim 4 (depends on 3)

The method of claim 3, further comprising:
determining, by the processing system, a rotational speed for the rotating cutting device during the surgical procedure;
comparing, by the processing system, the rotational speed to an optimized rotational speed for the rotating cutting device to determine a user operational performance; and
updating, by the processing system, the user performance record to include the user operational performance.

### Claim 5 (depends on 1)

The method of claim 1, wherein the user performance record comprises information pertaining to the conformance level of one or more of a single surgical tool operation during the surgical procedure, a plurality of tool operations during the surgical procedure, and a plurality of tool operations performed by the user during the surgical procedure.

### Claim 6 (depends on 1)

The method of claim 1, wherein the at least one tracking device comprises a plurality of optical markers.

### Claim 7 (depends on 6)

The method of claim 6, wherein the plurality of optical markers are arranged in a known position on the surgical tool.

### Claim 8 (depends on 1)

The method of claim 1, further comprising displaying, by the display, the user performance record as a graphical display.