Wrapped Pressure Sensor for Intravascular Catheter Profile
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Solution Overview
Problem
Current intravascular devices with pressure-sensing components face challenges such as reduced performance due to limited space for electronic components, stiffness issues, and altered profiles that affect maneuverability and pressure sensor readings, making it difficult to accurately diagnose and treat vascular occlusions.
Innovation Solution
The development of pressure-sensing intravascular devices with a cylindrical body featuring a pressure-sensing component wrapped around its circumference and a communication cable, allowing for precise pressure monitoring and data transmission, while maintaining a streamlined profile to enhance maneuverability and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If pressure-sensing components are added to intravascular devices, then pressure monitoring capability is improved, but device profile and maneuverability deteriorate
Solution Approach 1:
The pressure-sensing component is wrapped around the circumference of the catheter body, transitioning from a linear/embedded arrangement to a circumferential/dimensional arrangement. This allows the sensor to contact the vessel wall at multiple points around the catheter, improving pressure measurement accuracy while maintaining a compact profile that does not significantly alter the catheter's overall dimensions or maneuverability.
Solution Approach 2:
The pressure-sensing component utilizes a flexible, thin-wrapped structure that conforms to the catheter's cylindrical body. This flexible wrapping allows the sensor to maintain close contact with the vessel wall for accurate pressure detection while being thin enough to minimize the catheter's overall profile and maintain ease of navigation through vascular structures.
2Measurement precision
If pressure-sensing components are added to intravascular devices, then pressure monitoring capability is improved, but device profile changes from round to asymmetric, affecting maneuverability
Solution Approach 1:
By wrapping the pressure-sensing component around the circumference rather than attaching it to one side, the design distributes the sensor mass evenly around the catheter body. This circumferential arrangement maintains the catheter's substantially round cross-sectional profile, allowing it to navigate vascular structures smoothly without the asymmetric shape that would result from side-mounted sensors.
Solution Approach 2:
The invention deliberately avoids asymmetric attachment by using a symmetric circumferential wrapping arrangement. This symmetric distribution of the pressure-sensing component around the catheter circumference preserves the round profile necessary for optimal maneuverability while still providing comprehensive pressure monitoring capability.
3Adaptability or versatility
If space is allocated for electronic components in guidewires, then pressure sensing functionality is achieved, but core wire space and handling performance are reduced
Solution Approach 1:
The pressure-sensing component is arranged circumferentially around the catheter body rather than being embedded within the core wire cross-section. This dimensional reconfiguration allows the sensor to function without reducing the core wire's cross-sectional area, thereby maintaining the guidewire's flexibility, torque response, and overall handling performance while adding pressure sensing capability.
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 design improves the handling and accuracy of intravascular devices by allowing for precise pressure monitoring and data transmission, reducing the risk of vascular damage and improving the diagnosis and treatment of vascular occlusions.
Implementation Method 1
a pressure-sensing component coupled to the distal portion of the cylindrical body
Data Source
AI summary
Pressure-sensing intravascular devices, systems, and methods are provided. In some instances, the pressure-sensing intravascular devices include a cylindrical body having a proximal portion and a distal portion; a pressure-sensing component coupled to the distal portion of the cylindrical body, the pressure-sensing component being at least partially wrapped around a circumference of the cylindrical body; and a communication cable coupled to the pressure sensing component. The intravascular devices can be catheters and/or guidewire. Associated systems and methods are also provided.