RFID Acupuncture Needle Structure for Reduced Metal Interference
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Solution Overview
Problem
Conventional disposable acupuncture needles face challenges in attaching radio frequency identification (RFID) electronic tags due to their fine configuration and metal interference, making long-distance identification difficult.
Innovation Solution
A wireless identification needle design featuring an acupuncture needle with a needle handle, an expansion sleeve or liner, an electronic tag with a substrate and antenna, and a protective sheath, which separates the antenna from the needle to reduce metal interference and enable long-distance RFID reading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If UHF RFID technology is used for long-distance identification of acupuncture needles, then identification distance is improved, but metal interference from the needle body increases and makes antenna construction difficult
Solution Approach 1:
The patent introduces an expansion sleeve as an intermediary component between the metal needle body and the RFID antenna. This sleeve acts as a mediator that isolates the antenna from direct contact with the metal needle, reducing electromagnetic interference while still allowing the antenna to function for long-distance identification
Solution Approach 2:
The patent divides the needle structure into separate functional segments: the needle body, the expansion sleeve, and the RFID tag assembly. This segmentation allows each component to perform its specific function independently, with the expansion sleeve specifically designed to mitigate metal interference for the RFID antenna
2Length of moving object
If the needle diameter is reduced to maintain fine needle configuration, then needle precision is improved, but the space available for attaching RFID electronic tag decreases
Solution Approach 1:
The patent transitions from a two-dimensional attachment problem (attaching RFID to the narrow needle surface) to a three-dimensional solution by expanding the needle handle into an expansion sleeve. This creates additional volume and surface area in a different spatial dimension, providing adequate space for RFID tag attachment while maintaining the fine needle diameter
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 design allows for stable and efficient long-distance RFID reading, facilitating the management of used needles by enhancing identification efficiency and reducing the risk of metal interference.
Implementation Method 1
the limitations of needle configuration and space are liable to result in the difficulty of constructing a UHF RFID antenna and the occurrence of the metal interference of the transmission and receipt of the antenna electromagnetic signal
Data Source
AI summary
A wireless identification needle includes an acupuncture needle and an electronic tag. The acupuncture needle includes a needle body, a needle tip provided at a front end of the needle body, and a needle handle provided at a rear end of the needle body. The electronic tag includes a substrate directly or indirectly connected with the needle handle, an antenna disposed with the substrate, and a radio frequency identification (RFID) chip electrically connected with two ends of the antenna. As a result, the wireless identification needle has a table structure, a reduced metal interference, and a long-distance identification capability.