Magnetic Sensor Left Atrial Appendage Occlusion System
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Solution Overview
Problem
Existing medical devices for occluding left atrial appendages face challenges in ensuring appropriate sizing, orientation, and positioning due to the variability of the ostium size and volume, making percutaneous procedures less effective.
Innovation Solution
A medical system utilizing a controller, sheath, pusher catheter, and magnetic field location sensors to generate three-dimensional imaging within the heart, enabling precise positioning and orientation of an implantable device within the left atrial appendage, facilitated by magnetic field generators and display technology.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If percutaneous delivery system is used to implant occlusion device, then invasiveness is reduced, but positioning precision and orientation control deteriorate due to difficulty in ensuring appropriate sizing and positioning relative to the ostium
Solution Approach 1:
The patent replaces mechanical positioning methods with magnetic field-based navigation. Magnetic field generators create a magnetic field that interacts with magnetic sensors on the catheter and occlusion device, enabling precise three-dimensional positioning and orientation control without requiring complex mechanical steering mechanisms, thus maintaining percutaneous access while improving positioning accuracy
Solution Approach 2:
The patent introduces magnetic field generators and magnetic sensors as intermediary components between the operator and the occlusion device. These intermediaries enable indirect control and visualization of the device's position and orientation within the heart, allowing precise placement through the sheath while maintaining the benefits of percutaneous delivery
2Manufacturing precision
If magnetic field generators and sensors are added to enable three-dimensional imaging, then positioning precision is improved, but device complexity increases
Solution Approach 1:
The magnetic field generators serve multiple functions: they generate magnetic fields for positioning, enable three-dimensional imaging, and provide real-time feedback on device location and orientation. This multi-functionality reduces the need for separate systems and minimizes overall complexity despite the advanced capabilities provided
Solution Approach 2:
The magnetic sensors on the catheter and occlusion device automatically detect the magnetic field and provide positioning information without requiring manual calibration or complex external measurement systems. The system self-regulates and provides real-time feedback, reducing the operational complexity for the operator
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 placement and monitoring of the implantable device, optimizing its integration with tissue, and providing real-time imaging for surgical placement and follow-up monitoring.
Implementation Method 1
one or more magnetic field generators configured to generate a magnetic field within the anatomy of the patient
Implementation Method 2
one or more magnetic field location sensors associated with the implantable medical device and operatively coupled to the controller
Data Source
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AI summary
Medical devices, systems and methods for occluding a left atrial appendage of a heart with an implantable medical device and three-dimensional imaging. In one embodiment, the imaging is facilitated with a controller coupled to one or more magnetic field generators and a display, the one or more magnetic field generators configured to generate a magnetic field within the anatomy of a patient and the display provides the imaging and display information thereon. The medical system also includes a medical device delivery system for delivering the implantable medical device. The medical device includes one or more magnetic field location sensors therewith that are operatively coupled to the controller. With this arrangement, the sensors are sized and configured to facilitate providing the three-dimensional imaging within the heart that is viewable on the display to assist a physician to safely and effectively implant the medical device.