Surgical Handpiece RFID Coupler for Tool Recognition
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Solution Overview
Problem
Current powered surgical handpieces lack enhanced performance capabilities and ergonomic design, particularly in efficiently identifying and managing diverse surgical tools with varying operational parameters across ENT/head/neck and spine surgeries, which require a wide range of rotational speeds and settings.
Innovation Solution
A powered surgical handpiece with a housing containing a motor, a removably coupled surgical tool featuring an RFID tag, and an electrically isolated passive rigid metal coupler encapsulated in plastic for guiding RF energy from an antenna to the RFID tag, enabling wireless data transmission and tool identification without prior storage of product information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If RFID technology is integrated into the surgical handpiece for tool identification, then tool recognition capability is improved, but device complexity increases due to additional components like antennas and couplers
Solution Approach 1:
A coupler component is introduced as an intermediary element between the antenna and the RFID tag. The coupler guides RF energy from the antenna to the RFID tag, enabling wireless communication while maintaining electrical isolation. This intermediary structure resolves the complexity by providing a modular, pre-assembled solution that integrates multiple functions (RF energy transmission, electrical isolation, and mechanical coupling) into a single component.
Solution Approach 2:
The coupler serves multiple functions simultaneously: it acts as an RF energy guide, provides electrical isolation between the antenna and RFID tag, and serves as a mechanical coupling structure. This multi-functionality reduces the need for separate components, thereby managing device complexity while achieving reliable tool recognition.
2Adaptability or versatility
If multiple surgical tools with varying operational parameters are supported, then adaptability is improved, but ease of operation deteriorates due to increased need for manual configuration
Solution Approach 1:
The RFID tag stores operational parameters specific to each surgical tool, and this information is automatically read by the handpiece when the tool is coupled. The system provides feedback about the tool type, required rotational speeds, and other parameters to the control system, which then automatically configures the motor settings. This eliminates manual configuration and improves ease of operation while maintaining high adaptability.
Solution Approach 2:
The surgical tool itself carries its operational parameters in the RFID tag, allowing it to essentially configure itself when mounted on the handpiece. The system automatically detects the tool and applies the correct settings without requiring surgeon intervention, making the system self-configureing and easier to operate across different tool types.
3Reliability
If per-tool guidance on operational parameters is implemented, then operational safety is improved, but device complexity increases due to additional control systems
Solution Approach 1:
The RFID tag stores all necessary operational parameters in advance before the tool is used. The handpiece reads this pre-stored information when the tool is coupled, eliminating the need for complex real-time sensing and decision-making systems. This preliminary action approach improves safety through accurate parameter guidance while keeping the control system relatively simple.
4Ease of manufacture
If the coupler is designed as a passive rigid metal structure encapsulated in plastic, then ease of manufacture is improved, but RF energy transmission efficiency may worsen
Solution Approach 1:
The coupler is designed with specific physical parameters optimized for RF energy transmission: it is a rigid metal structure with dimensions and geometry tailored to efficiently guide RF energy from the antenna to the RFID tag. The plastic encapsulation provides electrical isolation while being thin enough to minimize attenuation. These parameter optimizations balance manufacturing simplicity with adequate RF energy transmission efficiency.
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
Enables automatic recognition and management of surgical tools based on stored data, improving operational safety and efficiency by allowing per-tool guidance on rotational speeds, irrigation, and other parameters, reducing tool change time and enhancing surgeon preferences, while being robust to manufacturing variations and sterilization cycles.
Implementation Method 1
an antenna for wirelessly transmitting RF energy
Implementation Method 2
a coupler that is electrically isolated from the antenna and the RFID tag, wherein the coupler is configured to guide the transmitted RF energy to the RFID tag
Data Source
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AI summary
A powered surgical handpiece includes a housing comprising a motor, and a surgical tool removably coupled to the housing and configured to be driven by the motor. The surgical tool includes a radio frequency identification (RFID) tag. The handpiece includes an antenna for wirelessly transmitting RF energy, and a coupler that is electrically isolated from the antenna and the RFID tag and that is configured to guide the transmitted RF energy to the RFID tag.