Computer Vision Surgical Item Tracking to Reduce Retention Risk

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Solution Overview

Problem

Current methods for tracking surgical items during medical procedures are prone to errors due to manual counting, fatigue, complex operations, and poor counting systems, leading to a significant risk of items being inadvertently retained in patients, which poses health risks and increases the time and cost of medical care.

Innovation Solution

Implementing computational techniques such as computer vision, machine learning, and deep learning to automate the tracking and counting of surgical items, using special-purpose machines and mobile devices to ensure accurate identification and reconciliation of item counts, and providing notifications based on comparisons between initial and final counts.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If manual tracking and counting methods are used, then the system is simple and easy to operate, but the accuracy and reliability of surgical item tracking deteriorates due to fatigue and human error

Engineering Contradiction:
Improveaccuracy of surgical item trackingVSAvoidcomplexity of tracking system
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent replaces manual mechanical counting methods with automated image processing and computer vision systems. Cameras capture images of surgical items, and algorithms automatically identify, count, and track them, eliminating human fatigue and error while maintaining system simplicity through software-based solutions.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system creates digital copies (images) of surgical items and processes these copies computationally to determine item counts and track their movement. This allows accurate tracking without requiring direct physical manipulation or complex mechanical counting devices.

Inventive Principle:
Principle #26Copying

2Productivity

If manual counting methods are used, then the system is easy to operate, but the productivity and efficiency of the surgical process deteriorates due to time-consuming counting procedures

Engineering Contradiction:
Improveefficiency of surgical item trackingVSAvoidtime spent on counting procedures
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The image processing system operates continuously throughout the surgical procedure, automatically capturing and analyzing images of surgical items as they are introduced, used, and removed. This eliminates interruptions for manual counting and maintains continuous tracking, significantly improving productivity without time loss.

Inventive Principle:
Principle #20Continuity of useful action

Solution Approach 2:

The system performs self-counting and self-tracking of surgical items through automated image recognition and processing. The computer vision algorithms independently identify and count items without requiring surgical staff to perform manual counting tasks, freeing them to focus on patient care and improving overall surgical efficiency.

Inventive Principle:
Principle #25Self-service

3Reliability

If manual tracking methods are used, then the system is simple, but the reliability of preventing retained surgical items deteriorates due to compliance issues and errors

Engineering Contradiction:
Improvereliability in preventing retained itemsVSAvoidcomplexity of tracking system
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The system provides real-time feedback by continuously monitoring surgical item counts and comparing them against expected values. When discrepancies are detected, the system generates alerts to notify surgical staff immediately, enabling prompt correction and preventing retained items. This automated feedback loop significantly improves reliability compared to manual tracking.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent replaces unreliable manual tracking with automated computer vision and image processing systems that objectively identify and count surgical items. This substitution eliminates human error, fatigue, and compliance issues inherent in manual methods, providing reliable and consistent tracking throughout the procedure.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentEP3975914B1Systems and methods for tracking surgical items
Publication Date: 2025.09.24 STRYKER CORP
  • EP3975914B1 patent drawingFigure 1
  • EP3975914B1 patent drawingFigure 2
  • EP3975914B1 patent drawingFigure 3

AI summary

Described herein are methods and systems for tracking surgical items. The methods may be performed by one or more processors, and may include receiving a first count of surgical items, receiving one or more images, wherein each image is a field of view comprising one or more surgical items, determining a second count of surgical items based at least in part on the one or more received images, and providing a notification based on the comparison between the first count of surgical items and the second count of surgical items.