Instrumented Metered-Dose Inhaler for Predicting Exacerbations
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Solution Overview
Problem
Patients with asthma or COPD often fail to recognize deteriorating conditions due to inadequate monitoring of inhaled drug usage, leading to late detection of impending exacerbations, especially in pediatric, elderly, or impaired individuals, as existing inhalation devices rely on patient self-reporting and are prone to mechanical failures.
Innovation Solution
An instrumented metered dose inhaler with a sensor/transmitter system that wirelessly monitors and records drug usage, allowing for real-time data analysis to predict impending exacerbations and notify medical personnel, which can be retrofitted onto conventional inhalers to enhance monitoring capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If patients self-monitor drug usage, then monitoring cost is reduced, but monitoring reliability deteriorates due to lack of time or resolve to keep accurate records
Solution Approach 1:
The inhaler device automatically monitors and records drug usage patterns without requiring patient intervention. The device serves itself by detecting when a dose is administered through sensors that register the mechanical actuation of the inhaler, eliminating the need for patients to manually track their medication usage while ensuring accurate and reliable data collection.
2Measurement precision
If detection mechanism is positioned within the device, then detection accuracy is improved, but device complexity increases and reliability decreases due to fouling by dirt or accumulated medication
Solution Approach 1:
The detection mechanism is extracted from the internal structure of the inhaler and repositioned on the external surface. Specifically, the sensor is placed on the outer surface of the mouthpiece or body of the inhaler where it can detect the acoustic signature of dose delivery without being exposed to the harsh internal environment. This external positioning maintains detection accuracy while eliminating fouling issues and reducing device complexity.
3Measurement precision
If detection mechanism is positioned within the device, then dose detection is improved, but possibility of failure increases due to fouling by dirt or accumulated medication
Solution Approach 1:
The detection mechanism is extracted from the internal structure of the inhaler and repositioned on the external surface. Specifically, the sensor is placed on the outer surface of the mouthpiece or body of the inhaler where it can detect the acoustic signature of dose delivery without being exposed to the harsh internal environment. This external positioning maintains detection accuracy while eliminating fouling issues and reducing device complexity.
4Reliability
If remote monitoring system is implemented, then early detection of exacerbations is improved, but device complexity increases
Solution Approach 1:
A remote monitoring system serves as an intermediary between the simple inhaler device and the healthcare provider. The inhaler contains basic sensors that detect dose delivery and store usage patterns locally. A separate remote monitoring component periodically retrieves this data, analyzes usage patterns for signs of exacerbation, and alerts healthcare providers. This intermediary approach enables early detection capability while keeping the inhaler itself relatively simple.
Data Source
AI summary
The present invention is directed to devices, systems, and methods for monitoring inhaled drug usage to predict when an acute attack or exacerbation of a disease, such as a respiratory disease, is imminent. Instrumented inhalers that use modular designs with standard components are disclosed, as are systems for monitoring the instrumented inhalers. Also disclosed are methods for determining whether or not a patient's inhaled drug usage pattern indicates that an acute attack or disease exacerbation is imminent, and notifying appropriate medical personnel of any usage patterns indicative of an attack or disease exacerbation. If such an attack or exacerbation is imminent, additional therapeutic agents may be dispensed to the patient or other interventions made.