Pacemaker Charger Cardan Suspension Homogeneous Field
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Solution Overview
Problem
Existing chargers for contactless charging of implanted energy storage devices, such as pacemakers, require meticulous adjustment of electrical operating parameters and have complex designs due to the need for a strong and homogeneous alternating magnetic field, which can be challenging to achieve, especially with varying implantation depths.
Innovation Solution
A charger design that generates a nearly homogeneous alternating magnetic field along its coil axis, allowing for easier and more reliable charging without the need for precise alignment, using a coil with adjustable orientation and position relative to the body, and capable of operating within a range of frequencies suitable for both indirect and ordinary induction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a strong and homogeneous alternating magnetic field is generated using conventional coil designs, then charging reliability is improved, but device complexity and adjustment requirements increase
Solution Approach 1:
The patent applies the dynamics principle by making the coil movable relative to the implant through a suspension system. The coil can be adjusted in position and orientation to achieve optimal alignment with the implant's magnetization section, ensuring reliable charging without requiring complex internal adjustments of the implant itself. This dynamic adjustment capability resolves the contradiction by maintaining charging reliability while simplifying the overall system design.
Solution Approach 2:
The patent employs parameter changes by operating the coil at different frequencies (e.g., 2 kHz, 3 kHz, 4 kHz, or 5 kHz) to optimize charging performance for different implant depths and positions. The ability to vary operational parameters allows the system to maintain reliable charging across different conditions without increasing device complexity.
2Device complexity
If the coil is fixed in position, then device complexity is reduced, but charging effectiveness decreases due to alignment requirements
Solution Approach 1:
The suspension system enables the coil to be dynamically positioned and oriented relative to the implant. This dynamic capability allows the coil to be aligned with the implant's magnetization section regardless of implant depth or position, ensuring charging effectiveness while maintaining relatively simple device structure.
Solution Approach 2:
The movable coil design provides universal applicability across different implant positions and depths. The same charger design can effectively charge implants at various locations without requiring position-specific configurations, achieving both structural simplicity and charging effectiveness.
3Force
If high current and voltage resistant design is used to achieve necessary field strength, then magnetic field strength is improved, but device complexity and safety requirements increase
Solution Approach 1:
The patent uses moderate current and voltage values combined with optimal coil positioning to achieve the necessary magnetic field strength. By allowing partial adjustment of the coil position and orientation, the system achieves effective charging without requiring excessively high electrical parameters, thereby reducing device complexity and safety requirements.
Solution Approach 2:
The patent replaces the need for high electrical parameters with a mechanical adjustment system. Instead of increasing current and voltage to achieve field strength, the system uses mechanical positioning of the coil to optimize magnetic field delivery, substituting electrical complexity with mechanical simplicity.
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 efficient and reliable contactless charging of implanted energy storage devices with reduced complexity and alignment requirements, ensuring consistent charging pulses regardless of implant position, thereby improving charging efficiency and ease of use.
Implementation Method 1
The contactless recharging of the energy storage device occurs via 'indirect' induction with the aid of a magnetized section that responds to an alternating magnetic field
Implementation Method 2
Due to the rapid change in the magnetic flux, this wave causes a nearby coil to emit a voltage pulse that charges the energy storage device
Data Source
Figure 1A~1B
Figure 1C
Figure 1D
AI summary
The invention relates to a charger (100, 200, 300) for contactless charging of an energy storage device of an implant (I) that is implanted in the body of a living being, comprising: at least one coil (110, 210) extending along a coil axis and configured to generate an alternating magnetic field; wherein, when the charger (100, 200, 300) is used as intended, the body is arranged relative to the coil (110, 210) such that the alternating magnetic field extending in the area within the coil along the coil axis penetrates the body to charge the energy storage device.