Pulmonary Medication Dosing Device with Flow-Triggered Valve Control
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Solution Overview
Problem
Current pulmonary medication delivery devices, such as metered dose inhalers, rely on patient coordination of inhalation and manual manipulation, leading to inconsistent medication delivery and low efficacy, with only 15-30% of the medication reaching the lungs, and traditional spacers are large, expensive, and inefficient.
Innovation Solution
A pulmonary medication dosing device (PMDD) that detects air flow and automatically controls the release of medication through a sensor and valve system, allowing for precise delivery of medication in response to inhalation, potentially improving delivery efficiency and reducing medication deposition on spacer walls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional metered dose inhaler is used, then the device is simple and easy to manufacture, but medication delivery is inconsistent and only 15-30% reaches the lungs
Solution Approach 1:
The patent incorporates a sensor that detects patient inhalation and provides feedback to a control system, which then triggers medication release. This closed-loop feedback mechanism ensures medication is delivered at the optimal moment during inhalation, significantly improving delivery consistency and lung deposition compared to traditional open-loop MDIs.
Solution Approach 2:
The system automatically detects when the patient is inhaling and triggers medication release without requiring manual actuation coordination. The device serves itself by using the patient's own inhalation action as the trigger signal, eliminating the coordination problem between manual depression and inhalation timing.
2Reliability
If a traditional spacer is used, then the device can hold medication, but it is large, expensive, and inefficient with medication deposition on spacer walls
Solution Approach 1:
The patent extracts the medication release function from a separate spacer device and integrates it directly into the inhaler mechanism. By placing the medication release valve and control system at the mouth of the inhaler, the system eliminates the need for a separate spacer, reducing overall device volume and preventing medication wall deposition that occurs in traditional spacers.
Solution Approach 2:
The patent introduces an electronic control system as an intermediary between the sensor detection and medication release. This intermediary processes the inhalation detection signal and precisely controls the timing and amount of medication release, improving delivery efficiency without requiring the large volume of a traditional spacer.
3Reliability
If manual coordination of inhalation and manipulation is required, then the device operation is simple, but delivery efficacy is low due to inconsistent patient coordination
Solution Approach 1:
The system uses the patient's own inhalation action to automatically trigger medication release. The sensor detects the inhalation flow and the control system releases medication in response, making the patient's inhalation action serve双重 purposes: both breathing and triggering medication delivery. This eliminates the need for separate manual coordination while maintaining operational simplicity.
Solution Approach 2:
The sensor provides real-time feedback on patient inhalation, allowing the control system to respond dynamically to actual breathing patterns. This feedback loop ensures medication is delivered at the optimal moment during inhalation, significantly improving delivery efficacy while requiring minimal patient effort or coordination.
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 PMDD enhances medication delivery by ensuring a higher percentage of medication reaches the lungs, offering improved efficacy and reduced costs compared to traditional devices, while maintaining a compact size.
Implementation Method 1
a sensor that generates a signal indicative of the air flow through a portion of the PMDD (e.g., a housing and/or mouthpiece of the PMDD) caused by an inhaling action of the patient
Implementation Method 2
the PMDD may control a valve to open and release at least a portion of a dose of medication stored in a canister coupled to the PMDD
Data Source
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AI summary
Example techniques and systems include detecting patient inhalation with a pulmonary medication dosing device and controlling a valve to release medication based on the detection. For example, a method includes generating a signal indicative of air flow within a portion of a pulmonary medication dosing device, receiving, by a processor, a command based on the signal and associated with a valve configured to at least partially control release of medication via the pulmonary medication dosing device, and controlling, by the processor and based on the received command, the valve to release at least a portion of a dose of the medication into the air flow. In some examples, a mobile computing device may be configured to generate and transmit the command to the pulmonary medication dosing device for controlling the valve.