Injectable Medicament Container Bung Electromagnetic Volume Measurement
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Solution Overview
Problem
Current drug delivery devices for injectable medicaments lack a precise and reliable method to measure the remaining volume of medicament within the cartridge, which is essential for accurate dosing, especially for patients with impaired vision or dexterity.
Innovation Solution
A container with an integrated measuring arrangement on the bung, comprising a signal generator and receiver, which emits and detects electromagnetic signals to determine the interior volume by processing feedback signals, allowing for precise measurement of the medicament volume and longitudinal position of the bung within the container.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a measuring arrangement is integrated into the bung of the container, then measurement precision of the interior volume is improved, but device complexity increases
Solution Approach 1:
The measuring arrangement (signal generator and signal receiver) is merged with the bung component, integrating measurement functionality into an existing structural element of the container. This combination allows volume measurement without adding separate external measuring devices, thereby improving measurement precision while minimizing the increase in overall device complexity.
2Ease of operation
If the bung is made slidable along the longitudinal axis, then ease of operation is improved, but reliability of sealing engagement deteriorates
Solution Approach 1:
The bung is designed with dynamic characteristics, allowing it to slide along the longitudinal axis of the container. This dynamic capability enables the bung to be easily manipulated for filling and dispensing operations while maintaining sealing functionality through controlled movement along the axis rather than requiring complex mechanical engagement mechanisms.
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
Enables precise, reliable, and reproducible measurement of the medicament volume, facilitating accurate dosing and easy operation, even for users with impaired vision or dexterity, by integrating the measuring components within the bung of the container.
Implementation Method 1
The measuring arrangement comprises a signal generator that is configured to emit a measurement signal into or through the interior volume. The measuring arrangement further comprises a signal receiver configured to detect a feedback signal that is indicative of an interaction of the measurement signal with at least one of the sidewall, the outlet or the interior volume.
Data Source
AI summary
A container for an injectable medicament can include an elongated body having a tubular-shaped sidewall extending along a longitudinal axis and having a distal end and a proximal end. The container can include an outlet at the distal end. The container can include a bung arranged inside the elongated body, sealingly engaged with the sidewall and slidable along the longitudinal axis relative to the sidewall. The container can include an interior volume to receive the injectable medicament and being confined by the sidewall, the outlet, and the bung. The container can include a measuring arrangement arranged in or on the bung. The measuring arrangement can include a signal generator configured to emit an electromagnetic measurement signal into or through the interior volume and a signal receiver configured to detect a feedback signal being indicative of an interaction of the measurement signal with at least one of the sidewall, the outlet or the interior volume.