Piezoelectric Guidewire Sensors for Imaging Within Tight Dimensions
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Solution Overview
Problem
Existing medical devices, such as guidewires and catheters, face challenges in integrating sensors due to stringent dimensional constraints, limiting their ability to provide effective data capture and functionality.
Innovation Solution
Incorporation of piezoelectric sensors with specific acoustic impedance and curing temperature onto guidewires, formed using techniques like screen printing and aerosol jet printing, allowing for efficient data transmission and imaging within limited spatial conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional sensors are integrated onto guidewires, then sensor functionality is provided, but the dimensional constraints are violated and effective functionality is lost
Solution Approach 1:
The patent changes the physical parameters of the sensor by using piezoelectric material with specific acoustic impedance (14 MRayl or less) and curing temperature (100°C or less), enabling the sensor to function within the stringent dimensional constraints of guidewires while maintaining effective functionality
Solution Approach 2:
The patent employs composite material structures by combining piezoelectric material with specific acoustic impedance properties and curing characteristics, creating a sensor that can be integrated onto guidewires without violating dimensional constraints while providing necessary functionality
2Measurement precision
If sensors with specific acoustic impedance are used, then imaging quality is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent specifies particular parameter ranges for acoustic impedance (14 MRayl or less) and curing temperature (100°C or less) to achieve optimal imaging quality while providing guidance for manufacturing within acceptable precision tolerances
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 real-time data capture and imaging with enhanced functionality, providing improved vascular imaging and lumen sizing without the need for subsequent catheterization, using smaller and more flexible devices.
Implementation Method 1
The at least one sensor comprises a piezoelectric material having a curing temperature of approximately 100° C. or less
Implementation Method 2
The at least one sensor comprises a piezoelectric material having a curing temperature of approximately 100° C. or less
Implementation Method 3
emitting an ultrasonic wave from the at least one sensor to determine a characteristic of the vessel
Data Source
AI summary
Medical devices incorporating sensors, systems using such medical devices, methods of manufacture and methods of use are provided. In one, non-limiting example, such medical devices may include intraluminal devices, such as guidewires and/or catheters, which include various sensors for detecting, imaging, and/or measuring of one or more physiological parameters. In one embodiment a guidewire may comprise an elongated element and at least one sensor comprising a piezoelectric material having a curing temperature of approximately 100° C. or less and an acoustic impedance of approximately 14 MRayl or less.