Blood Pump Pivotable Housing Aortic Arch Navigation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The tortuosity of human aortas poses challenges during and after the delivery of circulatory support devices, particularly due to the rigidity and size of existing devices that can cause harm to both the patient and the device.
Innovation Solution
A percutaneous mechanical circulatory support device with a flexible housing design, featuring a pivotable housing connector and magnetic coupling, allowing the impeller assembly to adjust its position and conform to the aortic arch shape, facilitated by steering wires and a flexible membrane, enabling the device to maintain effective blood flow while navigating tortuous anatomy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid housing design is used, then structural strength is improved, but the device cannot conform to the tortuous aortic arch shape
Solution Approach 1:
The housing is divided into multiple segments (first housing portion, second housing portion, third housing portion) that can pivot relative to each other. This segmentation allows the housing to bend and conform to the tortuous aortic arch while maintaining structural integrity through controlled articulation between segments.
Solution Approach 2:
The housing transitions from a static rigid structure to a dynamic articulated structure with pivot joints. The pivotable connection between housing portions enables the device to adapt its shape in response to the aortic arch geometry, allowing safe navigation through tortuous vessels.
2Productivity
If a large and rigid device is used, then pump performance is improved, but the device may harm the patient and itself during delivery
Solution Approach 1:
The articulated housing allows the pump to be delivered in a compact configuration that can navigate tortuous vessels safely, then deploy to its full functional size once positioned. This dynamic transformation eliminates the harm associated with forcing a rigid large device through curved vessels.
Solution Approach 2:
The segmented housing structure enables the device to flex and conform to vessel curvature during delivery, reducing mechanical stress on both the device and patient vasculature while maintaining the ability to achieve full pump performance after deployment.
3Power
If the impeller assembly housing is fixed, then torque transfer efficiency is improved, but the device cannot adjust to different aortic configurations
Solution Approach 1:
The impeller assembly housing is made pivotable relative to the motor housing, allowing the impeller to be positioned at different angles to optimize torque transfer in various aortic configurations. The magnetic coupling maintains effective power transfer across the pivot joint through angular adjustment.
Solution Approach 2:
The relative angular position between the impeller assembly housing and motor housing can be changed to optimize magnetic coupling and torque transfer. This parameter adjustment allows the device to adapt to different aortic arch geometries while maintaining efficient power transmission.
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
The flexible design allows for safe and effective delivery and operation of the device within the aortic arch, reducing the risk of damage and improving patient safety by conforming to the aortic shape, ensuring reliable blood flow and torque transfer.
Implementation Method 1
the motor includes a driving magnet assembly and the impeller assembly includes a driven magnet assembly coupled to the impeller and configured to rotate with the impeller, the driving magnet assembly is configured to cause the driven magnet assembly to rotate
Data Source
AI summary
Various aspects of the present invention are directed towards apparatuses, systems, and methods that may include a blood pump. The blood pump may include an impeller assembly housing, an impeller assembly having an impeller configured to cause blood to flow through the pump, a motor housing, a motor configured to drive the impeller, and a pivotable housing connector.