Isolated Driver Module for Accurate Drug Nebulization
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Solution Overview
Problem
Existing handheld nebulizer devices are limited by the pressure they can apply and the size of their temporary storage chamber, resulting in inaccurate and unstable drug delivery, requiring multiple manual operations and being prone to operational failures due to external environmental influences.
Innovation Solution
A drug delivery device with a main housing and a drug delivery module isolated from the external environment, featuring a driver connected to a piston that pushes the liquid drug through a nebulization structure, utilizing a pneumatic pump, micro-motor, or electromagnetic reciprocating structure to ensure consistent and accurate delivery, and a control module with a circuit board, position sensor, and battery to control the delivery process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If manual pressure compression is used, then the device structure is simple, but the drug delivery accuracy and stability are poor
Solution Approach 1:
The patent replaces the manual mechanical compression system with an automated driver system that uses pneumatic, electromagnetic, or piezoelectric actuation. The driver comprises a piston that moves within a cylinder to compress the drug, eliminating manual operation and providing consistent, repeatable compression forces that improve drug delivery accuracy and stability.
Solution Approach 2:
The driver system is designed to automatically perform the compression operation without requiring manual intervention. The piston is propelled by stored energy (pneumatic pressure, electromagnetic field, or piezoelectric expansion) to push the drug through the nebulization structure, making the device self-operating and improving delivery consistency.
2Ease of operation
If manual operation is used, then the device is easy to operate, but the delivery process requires multiple operations and is time-consuming
Solution Approach 1:
The driver system enables continuous or repeated compression actions without manual intervention. The piston can be rapidly actuated multiple times to deliver the complete drug dose in a single operation, eliminating the need for thirty separate manual rotations and press-releases, thus significantly reducing delivery time while maintaining ease of use.
Solution Approach 2:
The driver employs periodic actuation cycles where the piston repeatedly compresses and releases, enabling rapid sequential drug delivery. This periodic motion allows the system to deliver the entire dose through multiple compression cycles in a fraction of the time required for manual operation.
3Ease of manufacture
If compression structures are exposed to external environment, then the device is easy to manufacture, but the reliability is reduced due to operational failures
Solution Approach 1:
The driver components, particularly the piston and cylinder assembly, are enclosed within a protective housing that isolates them from the external environment. This enclosure protects the compression mechanism from dust, moisture, and other environmental factors that could cause operational failures, while maintaining manufacturing feasibility through modular assembly.
4Volume of moving object
If the temporary storage chamber is small, then the device is compact, but the total drug amount per treatment is limited
Solution Approach 1:
The driver system dynamically adjusts the compression parameters (force, duration, frequency) to optimize drug delivery. By controlling the piston movement and compression cycles, the system can deliver the full treatment dose (e.g., 1 cc) efficiently without requiring a large temporary storage chamber, thus maintaining device compactness while ensuring adequate drug quantity.
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 device achieves stable and accurate drug delivery, increasing the dosage per operation and simplifying the process for users, while avoiding the limitations of manual pressure and external environmental influences, enabling precise delivery of a single dose ranging from 0.03 cc to 1 cc.
Implementation Method 1
the driver is a pneumatic pump
Implementation Method 2
the driver is an electromagnetic reciprocating structure
Implementation Method 3
the liquid drug is nebulized into a nebulized drug
Data Source
AI summary
A drug delivery device including a main housing and a drug delivery module is provided. The main housing has an internal space. The drug delivery module is disposed in the internal space so as to be isolated from an external environment. The drug delivery module includes a drug bottle that contains a liquid drug and a driver that is connected to the drug bottle. The driver is configured to push the liquid drug to pass through a drug nebulization structure of the drug bottle such that the liquid drug is nebulized into a nebulized drug.