Medicament Delivery Device Self-Powered Indicator
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Solution Overview
Problem
Large volume bolus injector devices face challenges in determining the completion of the medicament delivery process and battery corrosion during storage, which can lead to device malfunction.
Innovation Solution
A medicament delivery device with a housing containing a medicament container and a piston, a medicament delivery mechanism, and a driving mechanism that converts linear motion into torque to rotate a rotation member, which is connected to an indicator system and an energy generating apparatus, such as a dynamo, to power a light source and indicate the remaining medicament volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If batteries are provided to power on-board equipment in medicament delivery devices, then the indicator system and light sources can function to show medicament volume and delivery status, but battery corrosion and leakage occur during long storage periods leading to device malfunction
Solution Approach 1:
The patent removes the battery from the device entirely, extracting the harmful element that caused corrosion and leakage during storage. The indicator system is redesigned to be mechanically driven by the medicament delivery mechanism itself, eliminating the need for external power sources during storage periods.
Solution Approach 2:
The indicator system is made self-powered through mechanical coupling with the medicament delivery mechanism. The rotation member is directly driven by the linear motion of the medicament delivery mechanism during injection, converting the injection motion into rotational motion that drives the indicator without requiring separate battery power.
2Ease of operation
If on-board equipment including light sources and indicator systems are provided, then patients can determine medicament container status, but the device complexity and power requirements increase
Solution Approach 1:
The patent merges the indicator system with the medicament delivery mechanism by directly coupling the rotation member to the linear motion mechanism. This integration eliminates separate power systems and control electronics, reducing overall device complexity while maintaining patient visibility of injection status.
Solution Approach 2:
The linear motion of the medicament delivery mechanism serves dual purposes: it both delivers the medicament and simultaneously drives the indicator system through the coupled rotation member. This multi-functionality eliminates the need for separate power and control systems.
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 ensures accurate determination of medicament delivery completion and prevents battery corrosion by using a self-powered indicator system and energy generating mechanism, enhancing user safety and device reliability.
Implementation Method 1
a driving mechanism connected to the medicament delivery mechanism such that when the medicament delivery mechanism is activated, the driving mechanism converts linear motion of the medicament delivery mechanism into torque so as to rotate a rotation member
Implementation Method 2
The rotation member may be a gear wheel connected to an energy generating apparatus. The energy generating apparatus may comprise a dynamo.
Data Source
AI summary
A medicament delivery device comprising: a housing arranged to contain a medicament container with a piston for sealing the medicament container and displacing the medicament; a medicament delivery mechanism arranged to push the piston to displace the medicament when activated; and a driving mechanism connected to the medicament delivery mechanism such that when the medicament delivery mechanism is activated, the driving mechanism converts linear motion of the medicament delivery mechanism into torque so as to rotate a rotation member.