RFID Hearing Aid Retainer for Loss Prevention
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Solution Overview
Problem
Hearing aids are frequently lost in long-term care facilities due to accidental disposal, misplacement, or theft, leading to high replacement costs and staff time consumption, with existing retainers failing to effectively prevent loss.
Innovation Solution
An RFID-equipped retainer for hearing aids using a passive RFID tag with a wire dipole antenna and impedance matching circuitry, capable of long-distance communication via far-field backscatter modulation, embedded in a string or device that attaches to the hearing aid and clothing or ear, ensuring detection up to 10 feet and non-interference with the hearing aid's operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional mechanical retainers are used to prevent hearing aid loss, then hearing aids are kept in place during wear, but they fail to prevent permanent loss when hearing aids are misplaced, thrown in garbage, or left in laundry
Solution Approach 1:
The patent introduces RFID tags as an intermediary tracking mechanism attached to hearing aids and retainers. These tags enable remote identification and location tracking without interfering with the mechanical retention function. The RFID system acts as a mediator between the hearing aid and the facility's tracking infrastructure, providing continuous location information to prevent permanent loss.
Solution Approach 2:
The retainer system is designed to perform multiple functions: mechanical retention of the hearing aid during wear, and RFID-based tracking for loss prevention. By integrating both functions into a single system, the patent eliminates the need for separate tracking devices and achieves both immediate retention and long-term location monitoring.
2Reliability
If hearing aids are equipped with tracking technology, then loss prevention capability is improved, but device complexity and cost increase
Solution Approach 1:
The RFID tag is embedded within the retainer structure, nesting the tracking technology inside the existing mechanical retainer. This integration approach minimizes additional complexity by utilizing the retainer's existing form factor and attachment mechanisms, rather than adding separate external tracking devices.
Solution Approach 2:
The RFID system is designed to be passively powered and automatically tracks hearing aids without requiring active user intervention. The system self-monitors hearing aid location and provides alerts when hearing aids are misplaced or removed from the facility, reducing the need for manual tracking procedures.
3Loss of information
If RFID tags are integrated into retainers, then hearing aid location can be tracked at long distances, but the retainer structure becomes more complex
Solution Approach 1:
The patent combines the RFID tag, antenna, and retainer structure into a single integrated component. By merging these elements, the design achieves long-distance tracking capability without requiring separate tracking devices, thereby minimizing overall structural complexity while maximizing detection range.
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 RFID-equipped retainer enables effective prevention and location of misplaced hearing aids, reducing loss and associated costs, while ensuring compatibility with the hearing aid's fit, feel, and performance, and providing alerts for staff to retrieve misplaced devices.
Implementation Method 1
capable of long-distance communication via far-field backscatter modulation
Data Source
AI summary
This invention provides an RFID-equipped retainer for hearing aids. In one embodiment, the retainer consists of a hollow string or tube. Located at one end of the retainer is a clasp that can attach to a hearing aid, and at the other end is a clip or similar fastener for optionally attaching the retainer to the clothing of the wearer. Also provided are the designs for passive and battery-assisted-passive, ultra high frequency, far-field RFID tags that can be embedded within this retainer. The tags consist of an RFID microchip with an impedance matching circuit mounted on a substrate and an antenna connected to the microchip. In another embodiment, the retainer consists of an RFID tag enclosed in a package or case that sits behind the wearer's ear and is physically connected to the hearing aid in the ear. The RFID microchip can be optionally programmed with an identification number that can be associated with information about the hearing aid to which it is attached. The identification number of the microchip can be read by an RFID reader at a distance of up to 10 feet or more. Also provided is an RFID system intended to be used in conjunction with the RFID-equipped hearing aid retainers to facilitate loss prevention, detection, tracking and identification of hearing aids.