Inhalation Device Ampoule Opening Mechanism
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Solution Overview
Problem
Inhalation therapy devices face challenges with dosing precision due to ampoule contamination and fluid loss when opening and inserting medicament ampoules, which affects the accuracy of medicament delivery.
Innovation Solution
An inhalation therapy device design where the ampoule is opened by an integrated opening means within the device, minimizing user handling and ensuring precise fluid delivery to the nebuliser, using a displaceable ampoule holder and opening mechanism that maintains a seal to prevent fluid loss and contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the user opens the ampoule before inserting it into the device, then the ampoule can be prepared in advance, but the content of the ampoule can be contaminated and fluid can be lost
Solution Approach 1:
The ampoule is pre-filled and sealed with a predetermined quantity of fluid at the factory. The user simply inserts the pre-prepared ampoule into the device without needing to open or prepare it beforehand, eliminating contamination and fluid loss risks while maintaining ease of operation
Solution Approach 2:
The device includes an integrated opening means that acts as an intermediary between the sealed ampoule and the nebuliser. This opening means opens the ampoule only at the moment of use within the protected environment of the device, preventing contamination and fluid loss that would occur if the user opened the ampoule beforehand
2Ease of operation
If the ampoule is opened by the user, then the operation is simple, but dosing precision cannot be ensured due to fluid loss
Solution Approach 1:
The ampoule is pre-filled with a precisely measured quantity of fluid at the factory under controlled conditions. This preliminary action ensures dosing precision is established before the user interacts with the device, eliminating variability introduced by user handling
Solution Approach 2:
The integrated opening means serves as a precise intermediary mechanism that opens the ampoule and transfers the fluid to the nebuliser without loss. This controlled intermediary process ensures that the pre-measured quantity is delivered accurately to the patient
3Measurement precision
If the ampoule is inserted and opened within the device, then dosing precision is improved, but the device complexity increases
Solution Approach 1:
The opening means is integrated into the device structure, merging the opening function with the existing ampoule holder and fluid delivery system. This combination achieves precise dosing control without requiring separate standalone opening equipment, thereby limiting the increase in device complexity
Solution Approach 2:
The device performs the opening operation automatically once the ampoule is inserted, eliminating the need for separate user actions or additional manual steps. The device self-manages the opening and fluid transfer process, achieving precision dosing with minimal additional complexity
Data Source
AI summary
An inhalation therapy device includes an atomizer for atomizing a drug which is advantageously present in the form of a fluid into an atomization chamber so that an aerosol or mist is provided in the atomization chamber. The patient or user can inhale the aerosol produced by the atomizer from the atomization chamber via a mouthpiece. The ampoule is inserted into an ampoule holder holding the fluid-containing ampoule. The inhalation therapy device also includes an opening unit for opening the fluid-containing ampoule. The ampoule holder advantageously includes a first part, disposed displaceably in relation to the opening unit, thereby allowing an ampoule present in the ampoule holder to be displaced in the direction of the opening unit.