Sensor Housing Electrical Isolation via Non-Conductive Mediator
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Solution Overview
Problem
Intraluminal sensing devices face challenges with resource-intensive insulating coatings that reduce sensor performance, introduce variability, and complicate assembly due to stiffness and alignment issues, while exposed conductive surfaces risk electrical failure from contact with conductive housings.
Innovation Solution
An intraluminal sensing device with a housing featuring both conductive and non-conductive materials, where the sensor's exposed conductive surface contacts the non-conductive material within the housing, preventing electrical shorts and maintaining performance without the need for insulating coatings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sensor is coated with an insulating material, then electrical isolation is achieved, but sensor performance and accuracy are reduced
Solution Approach 1:
A non-conductive material is introduced as an intermediary between the sensor's exposed conductive surface and the conductive housing. This mediator provides the necessary electrical isolation without requiring an insulating coating on the sensor itself, thereby maintaining sensor accuracy while preventing electrical shorts.
2Reliability
If the sensor is coated with an insulating material, then electrical isolation is achieved, but assembly complexity increases due to stiffness and alignment issues
Solution Approach 1:
The non-conductive material serves as a mediator that simplifies assembly by providing electrical isolation at the housing level rather than requiring precise coating and alignment of insulating layers on the sensor. This reduces assembly complexity while maintaining reliability.
3Reliability
If the sensor is coated with an insulating material, then electrical isolation is achieved, but production time and costs increase
Solution Approach 1:
By placing the non-conductive material in the housing rather than coating the sensor, the production process is simplified. This eliminates resource-intensive coating operations and reduces production time and costs while maintaining the necessary electrical isolation for reliability.
4Measurement precision
If the sensor has an exposed conductive surface, then sensor performance is improved, but electrical failure risk increases from contact with conductive housing
Solution Approach 1:
The non-conductive material acts as a protective intermediary between the sensor's exposed conductive surface and the conductive housing. This allows the sensor to maintain its exposed conductive surface for optimal performance while the mediator prevents electrical shorts, ensuring electrical stability and reliability.
Data Source
AI summary
An intraluminal sensing device may include a flexible elongate member, a housing, and a sensor. The flexible elongate member may include a distal portion and a proximal portion and may be configured to be positioned within a body lumen of a patient. The housing may be positioned at the distal portion of the flexible elongate member. The housing may include a conductive material and a non-conductive material. The sensor may include an exposed conductive surface and may be configured to obtain physiological data while positioned within the body lumen. The sensor may be positioned within the housing such that the exposed conductive surface contacts the non-conductive material of the housing and is electrically isolated from the conductive material.