RFID-Enabled IOL Cart for Intraoperative Lens Selection
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Solution Overview
Problem
Cataract surgery inefficiencies arise from intraoperative changes in intraocular lens (IOL) selection, leading to confusion and inefficiency in the operating room due to the need for locating and preparing alternative IOLs, especially when the initially planned lens is not available.
Innovation Solution
An IOL cart equipped with sensors and a computer unit for tracking and managing IOL inventory, using visual, barcode, or RFID scanners to detect and store information on individual IOL packages, providing real-time inventory updates and identifying the closest matching lens if the requested one is not available.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large stack of different potential lenses is provided based on the pre-surgical plan, then the availability of alternative IOLs is improved, but the device complexity and time required to manage lens inventory increases
Solution Approach 1:
The system enables self-service through automatic inventory tracking using RFID tags and readers. The cart autonomously monitors IOL stock levels, locations, and availability without requiring manual counting or management by surgical staff. The computer unit automatically updates inventory status and generates alerts when lenses need to be reordered, eliminating the need for complex manual inventory management while ensuring alternative lenses are available.
2Adaptability or versatility
If staff manually locate and acquire newly requested IOLs during intraoperative evaluations, then the surgical plan can be modified, but the time required and operational efficiency decreases
Solution Approach 1:
The system provides real-time feedback through the RFID tracking system that automatically detects and reports the location and availability of any requested IOL. When a surgeon requests a lens during intraoperative evaluation, the computer unit immediately queries the RFID database and provides feedback on the lens location, availability, and readiness for retrieval, eliminating manual searching and significantly reducing the time required to accommodate surgical plan modifications.
Solution Approach 2:
The system performs preliminary actions by pre-organizing and pre-positioning all potential alternative IOLs in the cart with RFID tags before surgery begins. The inventory is pre-mapped and tracked in the computer unit, so when an intraoperative change is needed, the alternative lenses are already prepared, located, and ready for immediate retrieval without requiring manual searching or acquisition during the critical surgical period.
3Device complexity
If manual inventory management is used, then the system is simpler, but the accuracy and real-time tracking of IOL stock levels deteriorates
Solution Approach 1:
The system replaces manual mechanical inventory management with an automated electronic tracking system using RFID technology. RFID tags on each IOL package communicate wirelessly with RFID readers in the cart, allowing automatic detection, identification, and tracking of lens stock levels, locations, and movement. This substitution of mechanical counting and tracking with electromagnetic field-based RFID technology provides continuous real-time inventory data with high precision while requiring minimal manual intervention, thus achieving accurate tracking without proportionally increasing system complexity.
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 IOL cart streamlines IOL access during surgeries by maintaining accurate and up-to-date inventory, enabling efficient planning and execution of cataract surgeries by linking inventory management with surgical planning and intraoperative evaluations, ensuring that both planned and alternative lenses are available or ordered in time.
Implementation Method 1
using visual, barcode, or RFID scanners to detect and store information on individual IOL packages
Data Source
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AI summary
An intraocular lens (IOL) housing comprising a base for receiving a plurality of IOL packages; one or more RFID sensors configured to detect a presence of individual IOL packages and a diopter power associated with each IOL package; a processor associated with the base and configured to receive, from the one or more RFID sensors, dynamic IOL inventory management information, the dynamic IOL inventory management information relating to a number of the IOL packages disposed within the base and a diopter power of each of the IOL packages disposed within the base, the processor being further configured to provide the dynamic inventory management information to an inventory database management system stored in a network-based storage location; and a plurality of visual indicators actuatable by the processor, wherein in the IOL inventory management information further comprises a location for each of the IOL packages in the housing, and wherein the processor is further configured to receive a request from a user relating to a desired IOL, compare the IOL inventory management information to the received request related to a desired IOL, select an IOL package with a diopter power associated IOL power information closest to a desired IOL power, and cause one or more of the plurality of visual indicators to actuate adjacent to the location of the IOL package with the diopter power closest to the desired IOL power.