Optical Force Sensor with Fiber Bragg Grating for Cardiac Tissue
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Solution Overview
Problem
Current medical procedures face challenges in accurately quantifying the force exerted against cardiac tissue during procedures like septal puncture and pulmonary vein occlusion, leading to difficulties in precise tissue location and potential patient injury.
Innovation Solution
Incorporating an optical element with a fiber Bragg grating (FBG) into medical devices, such as dilators and cryotreatment catheters, to measure pressure and strain, allowing for real-time feedback and prevention of excessive force application.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If optical element with fiber Bragg grating is integrated into the elongate body, then measurement precision of applied force is improved, but device complexity increases
Solution Approach 1:
The optical element is integrated directly into the elongate body of the medical device, merging the sensing function with the structural component. This combination allows force measurement capability to be built into the device itself rather than added as a separate external system, resolving the contradiction by combining measurement precision with acceptable device complexity through functional integration.
2Measurement precision
If optical element is located at the distal portion of the elongate body, then measurement precision of tissue contact force is improved, but ease of operation deteriorates due to integrated optical component
Solution Approach 1:
The optical element positioned at the distal portion enables the device to autonomously measure and provide feedback on the forces being applied to tissue during the procedure. This self-monitoring capability allows the system to automatically detect when optimal force is achieved or when tissue damage risk occurs, reducing the need for operator judgment and improving ease of operation through intelligent self-regulation.
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 accurate quantification of force applied to cardiac tissue, improving procedural precision and safety by preventing tissue damage and ensuring proper device positioning.
Implementation Method 1
an optical element located at the distal portion of the elongate body. In one aspect of the embodiment, the optical element includes: at least one optical fiber having a distal portion and a proximal portion opposite the distal portion; and a fiber Bragg grating (FBG) located within the distal portion of the optical fiber
Data Source
AI summary
Devices, systems, and methods for quantifying applied pressure by a device against an area of tissue. In particular, the present technology is related to medical devices including an optical element with a fiber Bragg grating, systems including the medical devices, and methods of quantifying applied pressure by the medical device. In one embodiment, a medical device comprises an elongate body including a distal portion and a proximal portion opposite the distal portion, and an optical element located at the distal portion of the elongate body. In one embodiment, the optical element include an optical fiber with a fiber Bragg grating. In one embodiment, the medical device is part of a medical system comprising a control unit in communication with the medical device, the control unit including an optical interrogator in communication with the optical element and processing circuitry configured to receive data from the optical interrogator.