Video-Based Image Detection for Surgical Fluid Control

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Solution Overview

Problem

Current arthroscopic surgical systems require manual control by surgeons to maintain clear video images, which can be time-consuming and may compromise surgical procedures due to the difficulty in managing fluid flow and debris, leading to suboptimal image quality.

Innovation Solution

A video-based image detection and control system that automatically identifies degrading conditions such as bubbles, debris, and bleeding using video signatures, and adjusts the cutting tool, pump system, and light source to maintain optimal image quality by controlling suction pressure, flow rates, and light intensity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If manual control of fluid flow is implemented by the surgeon, then the surgical procedure can be performed, but the image quality may degrade due to difficulty in managing debris and blood, and additional time is required

Engineering Contradiction:
Improveimage qualityVSAvoidsurgical time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The system enables self-service by implementing automatic fluid flow control through video image analysis. The processor continuously analyzes video images from the surgical site, detects debris and blood, and automatically adjusts pump operations without surgeon intervention. This resolves the contradiction by making the system self-regulating, maintaining reliable image quality while eliminating the time loss associated with manual management.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system implements feedback control by continuously monitoring video image quality and using this information to automatically adjust fluid flow parameters. The processor analyzes image data in real-time, detects degradation caused by debris or blood, and adjusts pump speeds accordingly. This closed-loop feedback mechanism ensures consistent image quality without requiring additional surgical time for manual adjustments.

Inventive Principle:
Principle #23Feedback

2Reliability

If manual control of fluid flow is implemented by the surgeon, then the surgical procedure can be performed, but the operation becomes more complex and difficult to manage

Engineering Contradiction:
Improveimage qualityVSAvoidease of control
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The system performs self-service by automatically analyzing video images and controlling fluid flow pumps without requiring surgeon intervention. The processor continuously monitors image quality, detects debris and blood, and adjusts pump operations autonomously. This eliminates the complexity of manual control while maintaining reliable image quality, directly resolving the contradiction between reliability and ease of operation.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system replaces manual mechanical control with an automated image-based control system. Instead of the surgeon manually adjusting pumps based on visual assessment, the processor automatically analyzes video images and controls pump operations. This substitution of manual mechanical control with automated image processing significantly improves ease of operation while maintaining image quality reliability.

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

3Extent of automation

If video image analysis is performed to detect debris and blood, then automatic control can be implemented, but the processing complexity increases

Engineering Contradiction:
Improveautomation levelVSAvoidsystem complexity
Core Design Contradiction:
Extent of automationVSDevice complexity

Solution Approach 1:

The system achieves multi-functionality by using a single video camera to perform multiple tasks: providing visual feedback to the surgeon and simultaneously enabling automatic debris and blood detection through image analysis. The processor handles both real-time display generation and automated control decisions from the same video input. This universal approach increases automation while managing complexity by consolidating functions rather than adding separate sensing systems.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system manages complexity through parameter changes in the image processing algorithm. By adjusting analysis parameters such as color thresholding for blood detection, contrast thresholds for debris detection, and frame rate sampling, the system optimizes the balance between automation level and processing complexity. These parameter adjustments allow the system to achieve high automation while keeping the processing requirements manageable through efficient algorithmic approaches.

Inventive Principle:
Principle #35Parameter changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The system enhances image quality by automatically responding to degrading conditions, reducing the need for manual intervention and ensuring consistent, clear video feeds during surgical procedures.

Implementation Method 1

The detection of hemoglobin is obtained by use of light reflected from the hemoglobin in blood disposed in the joint 1

Methodology Applied
Scientific EffectLight reflection: Reflection

Implementation Method 2

Fluid is pumped into and out of the joint to remove debris and blood from the surgical site

Methodology Applied
Scientific EffectFluid flow:

Implementation Method 3

The arrangement includes a pressure sensor 5 joined to the feed tubing 13

Methodology Applied
Scientific EffectPressure sensing:

Data Source

PatentUS9066658B2Method and system for video based image detection/identification analysis for fluid and visualization control
Publication Date: 2015.06.30 STRYKER CORP
  • US9066658B2 patent drawing
  • US9066658B2 patent drawing
  • US9066658B2 patent drawing

AI summary

In a surgical system, a system controller executes a video signature identification and image control routine to maintain quality of a video image taken by a video camera located at a surgical site and provided on a video display. The system includes a video camera/light source handpiece for insertion into a patient body. A tool is inserted separately into the surgical site. Fluid input into the surgical site is provided by a liquid pump or by an insufflator. Video signals are analyzed and fluid input/output, fluid pressure, and/or tool operation is automatically controlled to maintain image quality of the surgical site without manual adjustments.