Phaco Tip Detection Using Pressure and Resonance Signals
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Solution Overview
Problem
Existing ophthalmic surgical systems face challenges in accurately identifying the type of tip being used on a handpiece, leading to potential safety hazards and inefficiencies due to mismatched system settings.
Innovation Solution
A system and method for detecting the actual tip type on a handpiece by measuring pressure differentials and resonance frequencies, using sensors and a control module to create a look-up table for tip identification and adjust system settings accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual tip identification is used, then device complexity is reduced, but measurement precision and reliability of tip type identification deteriorate
Solution Approach 1:
The patent replaces manual mechanical tip identification with automated sensor-based detection systems. Pressure sensors measure pressure differentials and resonance frequency sensors detect natural frequencies to automatically identify tip types, eliminating manual intervention and improving identification accuracy while maintaining acceptable system complexity through integrated electronic detection.
Solution Approach 2:
The patent employs multi-functional sensors that can detect multiple tip characteristics simultaneously. The same sensor system used for general operational monitoring also identifies tip types through pressure differential measurements and resonance frequency detection, allowing one system to serve multiple purposes including tip identification, operational monitoring, and safety verification.
2Reliability
If automated tip detection systems are implemented, then measurement precision and reliability improve, but device complexity increases
Solution Approach 1:
The patent implements feedback mechanisms where sensor measurements of pressure differentials and resonance frequencies are continuously monitored and compared against reference values. The system provides real-time feedback to confirm tip type identification and alert operators to mismatches between detected and selected tip types, thereby improving reliability through automated verification while managing complexity through algorithmic processing.
Solution Approach 2:
The detection system performs self-verification by automatically comparing measured parameters against stored reference data for different tip types. The system autonomously identifies tip types without requiring external calibration or manual input during operation, reducing the complexity burden on operators while maintaining high identification reliability through self-contained detection and verification capabilities.
3Productivity
If tip type detection is performed during priming, then productivity is improved by preventing mismatches, but loss of time occurs during the detection process
Solution Approach 1:
The patent performs tip type detection during the priming phase, which occurs before the actual surgical procedure begins. By completing the detection and verification process in advance, the system ensures tip-type匹配 is established prior to surgery, preventing costly time losses during the procedure itself while minimizing overall time impact since priming is a necessary preparatory step anyway.
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
Ensures safe and efficient operation by correctly identifying the tip type, preventing mismatches and enhancing surgical precision.
Implementation Method 1
measuring pressure differentials and resonance frequencies, using sensors and a control module
Implementation Method 2
measuring pressure differentials and resonance frequencies, using sensors and a control module
Data Source
AI summary
Systems and methods are provided for detecting the actual tip or tip type being used on a handpiece of an ophthalmic instrument. By detecting the tip type being used, the correct system settings can be used during the surgical procedure, and the surgical system may operate safely.