High-Voltage Transformer Layout for Compact Lithotripsy Insulation
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Solution Overview
Problem
Existing sound wave treatment devices for medical applications, such as lithotripsy, face challenges in maintaining high insulation strength and first failure safety while minimizing the installation space for high voltage components, which is critical due to safety requirements for patients and operators.
Innovation Solution
The sound wave treatment device incorporates a high voltage unit with a blocking converter transformer that includes a primary coil, high voltage coil, and spacers embedded in an insulating mass, providing galvanic separation and increased insulation strength, allowing for a smaller installation space and efficient charging of discharge capacitors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the installation space for high voltage components is reduced, then the device becomes more compact and space-efficient, but the insulation strength and safety protection may be compromised
Solution Approach 1:
The high voltage coil is embedded within an insulating mass, with the primary coil nested inside the high voltage coil. This nested arrangement allows multiple coils to occupy overlapping spatial volumes, significantly reducing the overall installation space while maintaining the required insulation distances between windings through the insulating mass.
Solution Approach 2:
An insulating mass is introduced as an intermediary material between the primary coil and high voltage coil windings. This insulating mass provides the necessary electrical insulation and safety protection, allowing the coils to be positioned closer together than would be possible with air insulation alone, thereby reducing the installation space while maintaining reliability.
2Length of stationary object
If the distance between adjacent high voltage windings is reduced, then the transformer size is minimized, but the insulation strength may be insufficient
Solution Approach 1:
The insulating mass is formed as a composite structure embedding the high voltage coil windings. This composite material approach allows the use of materials with superior dielectric properties compared to air, enabling reduced winding distances while maintaining the required insulation strength and first failure safety.
3Reliability
If a blocking converter unit with galvanic separation is used, then first failure safety is enhanced, but the device complexity increases
Solution Approach 1:
The blocking converter functionality is integrated into the transformer structure by embedding both the primary coil and high voltage coil within a shared insulating mass. This merging of functions into a single integrated transformer unit achieves the required galvanic separation and first failure safety while avoiding the need for separate blocking converter components, thus reducing overall device complexity.
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
This configuration enhances first failure safety, reduces the risk of electrical hazards, and enables more efficient operation by allowing for shorter charging times and precise spacing of high voltage windings, ensuring effective insulation and efficient energy transfer.
Implementation Method 1
The transformer has a primary coil, a high voltage coil, and spacers. The high voltage coil has a plurality of high voltage windings that are embedded in an insulating mass
Implementation Method 2
sound waves are generated by spherically arranged piezo elements concertedly excited with high voltage
Data Source
AI summary
A sound wave treatment device for medical treatment using compression waves, in particular for lithotripsy, includes a sound wave generator, a plurality of piezo elements that are coupled to the sound wave generator, and, an electrical high voltage unit that is set up for supplying the piezo elements with high electrical voltage. The high voltage unit has a blocking converter unit having a transformer, wherein the transformer has a primary coil, a high voltage coil, and spacers, wherein the high voltage coil has a plurality of high voltage windings that are embedded in an insulating mass and are positioned using the spacers such that adjacent high voltage windings are at a defined distance (a) from one another due to the spacers.