Passive NFC Tag for Inhaler Dose Counting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing inhaler dose counting mechanisms, especially 'smart' inhalers using Bluetooth technology, are costly, bulky, and require significant power, making them expensive and inefficient for medicament dose tracking.
Innovation Solution
Implementing a near field communication (NFC) tag on inhalers that communicates with electronic devices like smartphones or smartwatches, eliminating the need for a separate power source and simplifying the device design, allowing for low-cost, secure, and accurate dose counting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If Bluetooth technology is used for wireless communication in smart inhalers, then data transmission capability is improved, but power consumption increases and device cost increases
Solution Approach 1:
The patent extracts the active transceiver component from the inhaler device, replacing Bluetooth wireless communication with a passive NFC tag. This removes the power-consuming radio transmitter while retaining data communication capability through electromagnetic induction with a reader device.
Solution Approach 2:
The patent employs a low-cost passive NFC tag that can be easily manufactured and replaced, eliminating the need for expensive battery-powered Bluetooth modules. The tag serves its communication purpose without requiring maintenance of power sources.
2Loss of information
If Bluetooth transceiver is integrated into inhaler, then wireless communication function is improved, but device size and complexity increase
Solution Approach 1:
The patent removes the complex active transceiver system from the inhaler, replacing it with a simple passive NFC tag consisting of a microchip and antenna. This dramatically reduces the electronic component count and overall device complexity while maintaining wireless data transfer capability.
Solution Approach 2:
The patent introduces a separate reader device as an intermediary that performs the active electromagnetic induction. This allows the inhaler to remain simple and passive while still achieving wireless communication through the interaction between the NFC tag and external reader.
3Measurement precision
If mechanical pawl and ratchet mechanism is used for dose counting, then dose counting function is achieved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent replaces the mechanical pawl and ratchet counting mechanism with an electronic NFC-based system. Dose information is stored electronically in the NFC tag and read wirelessly, eliminating complex mechanical moving parts while maintaining accurate dose tracking capability.
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 NFC-based system provides a cost-effective, compact, and secure method for tracking medicament doses, reducing the complexity and power requirements of inhaler devices, enabling efficient dose counting and data management.
Implementation Method 1
Near field communication uses electromagnetic induction between an antenna of the NFC tag and an antenna of the electronic device communicating with it for communication between the NFC tag and the electronic device.
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
A method of counting medicament doses dispensed by an inhaler (100), the inhaler (100) comprising a passive electronic tag (120) for communication with a separate electronic device (102). The method comprises: locating the inhaler (100) near or touching the inhaler (100) against the separate electronic device (102) such that communication is established between the passive electronic tag (120) and the separate electronic device (102). In response, the separate electronic device (102) increments the dose counter associated with the inhaler.