Optical Sensor for Drug Delivery Device
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Solution Overview
Problem
Medicament delivery devices face challenges in detecting occlusions or leaks in the delivery line, which can lead to incorrect dosing, and existing solutions are limited by the need for wired connections and susceptibility to electromagnetic interference.
Innovation Solution
A medicament delivery system that uses an optical sensor system powered by optical radiation, eliminating the need for wires and providing immunity to electromagnetic interference, allowing for flexible engineering and reliable monitoring of medicament delivery parameters such as pressure and force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wired connections are used to power and control the sensor system, then electrical power supply and control signals can be transmitted reliably, but the device complexity increases and electromagnetic interference susceptibility arises
Solution Approach 1:
The patent replaces wired electrical connections with optical radiation for both power transmission and data communication. The sensor system is powered by optical radiation energy received through an optical receiver, and control signals are transmitted optically, eliminating physical wire connections and their associated complexity and electromagnetic interference issues.
Solution Approach 2:
Optical radiation serves as an intermediary medium to transmit both energy and information to the sensor system without direct electrical contact. The optical receiver converts optical radiation into electrical energy to power the sensor, while optical signals carry control and data information, acting as a bridge between the external control unit and the sensor system.
2Adaptability or versatility
If photoelectrical modules are used to transform optical radiation into electrical energy, then wire-free power supply is achieved and engineering flexibility increases, but additional components are required
Solution Approach 1:
The optical receiver performs multiple functions: it receives optical radiation for power supply, transforms optical energy into electrical energy, and can also receive optical control signals. This multi-functionality reduces the need for separate components for power and control, offsetting the added complexity with functional integration.
3Volume of moving object
If the sensor system is integrated in a silicon chip using miniaturized photoelectrical modules, then the overall footprint is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The sensor system is integrated into a silicon chip structure where the photoelectrical module, sensor elements, and signal processing components are nested together in a compact arrangement. The optical receiver is integrated with the sensor circuitry on the same chip, creating a miniaturized system that fits within the container while maintaining functionality.
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 optical sensor system ensures accurate monitoring of medicament delivery, detecting occlusions or leaks effectively and ensuring the correct dosage is administered, while reducing complexity and cost through the use of miniaturized photoelectrical modules and robust operation under various lighting conditions.
Implementation Method 1
Said sensor system comprises an optical receiver that is designed to receive optical radiation energy and to transform this optical radiation energy into electrical energy for operating the sensor system
Data Source
AI summary
A container designed to contain a fluid medicament and adapted to cooperate with a delivery device for delivering the fluid medicament comprises an electrically operable sensor system for measuring at least one physical or chemical parameter value related to the container and/or fluid medicament therein, wherein the sensor system comprises an optical receiver designed to receive optical radiation energy and to transform said optical radiation energy into electrical energy for operating the sensor system.