Inductive Drug Delivery Heating for Cold Medicament Injection
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Solution Overview
Problem
Many medicaments require refrigeration during storage and cause discomfort during injection when administered at a temperature different from ambient or body temperature, and existing drug delivery devices lack efficient methods to heat medicaments to a suitable temperature for patient comfort.
Innovation Solution
A drug delivery device equipped with a receiver coil that receives energy via electromagnetic induction to charge an energy storage unit, which converts some energy into heat to warm the medicament, and a charging device with a transmitter coil to induce heating using resonant inductive coupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If medicament is stored in refrigeration to maintain stability, then storage reliability is improved, but patient comfort during injection deteriorates due to low temperature
Solution Approach 1:
The heating element is activated before injection to pre-warm the medicament to ambient or body temperature, eliminating patient discomfort while maintaining storage stability until use
2Object-affected harmful factors
If a heating element is added to warm the medicament, then patient comfort is improved, but device complexity increases
Solution Approach 1:
The heating element is integrated into the existing drug delivery device structure, combining the warming function with the injection mechanism to avoid adding separate complex subsystems
Solution Approach 2:
Electrical or electromagnetic heating is used instead of mechanical heating methods, providing a more compact and controllable solution within the device
3Object-affected harmful factors
If energy is used to heat the medicament, then patient comfort is improved, but energy consumption increases
Solution Approach 1:
Only the specific portion of the medicament that will be injected is heated to the required temperature, rather than heating the entire supply, thereby minimizing energy consumption while achieving the comfort benefit
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 system effectively heats medicaments to ambient or body temperature, reducing patient discomfort during injection by using electromagnetic induction for efficient energy transfer and heat generation.
Implementation Method 1
the receiver coil is arranged to receive energy from a transmitter coil by electromagnetic induction
Implementation Method 2
at least a portion of the energy received by the receiver coil is converted to heat energy, and wherein the receiver coil is arranged in the drug delivery device to transfer the heat energy to the container to heat medicament contained in the container
Implementation Method 3
the receiver coil and resonant circuit are arranged to receive the energy from the transmitter coil by resonant inductive coupling
Data Source
Figure 1A~1B
Figure 2~3
Figure 4A~4C
AI summary
A drug delivery device for delivering a medicament is disclosed, the drug delivery device comprising a housing arranged to contain a container, a receiver coil, and an energy storage unit, wherein the receiver coil is arranged to receive energy from a transmitter coil by electromagnetic induction, wherein the energy storage unit is arranged to be charged by at least a portion of the energy received by the receiver coil, wherein at least a portion of the energy received by the receiver coil is converted to heat energy, and wherein the receiver coil is arranged in the drug delivery device to transfer the heat energy to the container to heat medicament contained in the container. A system comprising the drug delivery device is also disclosed.