Magnetic Shielding Cap for Dermatoscopes Near CIED Patients
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Solution Overview
Problem
Dermatoscopes with built-in magnets pose a risk to patients with cardiac implantable electronic devices (CIED) due to strong magnetic fields that can interfere with their functioning, necessitating a safe examination solution.
Innovation Solution
A shielding cap composed of a magnetically soft material with a maximum relative magnetic permeability of 10³-10⁷, featuring a magnetic screen and protective casings, reduces magnetic induction to safe levels for CIED patients, ensuring compatibility with dermatoscopes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a dermatoscope with built-in magnets is used to ensure precise and quick assembly, then the assembly precision and speed are improved, but the magnetic field generated may disturb the functioning of cardiac implantable electronic devices
Solution Approach 1:
A shielding cap made of magnetically soft material is introduced as an intermediary element between the dermatoscope magnet and the patient's CIED. The cap acts as a magnetic shield that redirects and contains the magnetic field lines within itself, preventing them from reaching and interfering with the electronic device while allowing the dermatoscope to maintain its full magnetic strength for secure attachment.
Solution Approach 2:
The shielding cap is constructed as a thin-walled structure made of magnetically soft material that fits over the dermatoscope contact plate. This thin film approach provides effective magnetic shielding without adding significant thickness, maintaining the dermatoscope's functionality while protecting against magnetic field interference.
2Object-affected harmful factors
If the thickness of the magnetic screen is increased to reduce magnetic induction, then the shielding effectiveness is improved, but the contact between the contact plate and the patient's skin may be compromised
Solution Approach 1:
The shielding cap employs a thin-walled design where the magnetically soft material forms a thin shell that provides sufficient magnetic shielding while maintaining flexibility and thinness. This ensures the cap does not create excessive distance between the contact plate and patient skin, preserving both shielding effectiveness and reliable contact.
Solution Approach 2:
The thickness of the magnetic screen is optimized to specific parameter ranges that balance two competing requirements: thick enough to provide adequate magnetic shielding (reducing magnetic induction below 0.5 mT), but thin enough to maintain sufficient contact pressure between the contact plate and patient skin for reliable examination.
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 cap effectively limits magnetic induction to below 0.5 mT, allowing safe dermatoscopic examinations by adjusting to various dermatoscope models, protecting both the device and patient, while being reusable and hygienic.
Implementation Method 1
the cap is composed of a magnetic screen made of a magnetically soft material, and at least one protective casing, wherein the magnetically soft material has maximum relative magnetic permeability (μ) falling in the range 10³-10⁷
Implementation Method 2
the magnetically soft material has maximum relative magnetic permeability (μ) falling in the range 10³-10⁷
Data Source
Figure 1
Figure 2~5
Figure 6~7
AI summary
The invention concerns a cap (1) for a dermatoscope (2) which features built-in magnets (3), where the cap (1) is composed of a magnetic screen (5) made of a magnetically soft material and at least one protective casing (6,7,8). The cap (1) is designed for application in dermatoscopes to examine patients with cardiac implantable electronic devices.