Interventional Device Assembly Priming to Remove Lumen Microbubbles
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Solution Overview
Problem
Current neurovascular procedures face challenges such as limited availability of trained interventionalists, complex setup requirements, difficulty in achieving supra-aortic access, especially in Type III arches, and inefficiencies in adapting systems for neurovascular treatments, which hinder the delivery of neurovascular care.
Innovation Solution
A robotic control system comprising hubs for guidewire, guide catheter, and access catheter, allowing for precise axial and rotational adjustments, lateral deflection, and magnetic coupling to facilitate robotic placement and manipulation of catheters for neurovascular procedures, including aspiration, embolic deployment, and stent placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple coaxial catheters are used for neurovascular procedures, then the capability to perform complex interventions is improved, but the difficulty of precise control and the complexity of setup requirements increase
Solution Approach 1:
The system divides the control of multiple catheters into separate robotic hubs, each independently controlling a specific catheter or guidewire. This segmentation allows complex multi-catheter procedures to be managed through modular, independent control units rather than a single complex system.
Solution Approach 2:
Manual mechanical control of multiple catheters is replaced with an automated robotic system that uses magnetic coupling and motorized hubs to precisely position and manipulate catheters. This substitution reduces the physical burden and complexity on the operator while maintaining precise control.
2Ease of operation
If manual control of multiple catheters is used, then flexibility in procedure adaptation is maintained, but the precision and stability of catheter positioning deteriorate due to inadvertent motion from frictional interplay
Solution Approach 1:
The robotic system incorporates sensors and control mechanisms that continuously monitor catheter position and adjust for frictional forces between coaxial shafts and vasculature. This feedback loop prevents inadvertent catheter motion while maintaining precise positioning throughout the procedure.
Solution Approach 2:
The robotic system autonomously manages the frictional interplay between catheters through motorized control and magnetic coupling, eliminating the need for manual coordination. The system self-adjusts to maintain stable positioning without operator intervention.
3Adaptability or versatility
If supra-aortic access is achieved manually, then procedural flexibility is maintained, but the time required for system adaptation and catheter exchange increases
Solution Approach 1:
The robotic system pre-positions the initial access catheter and guidewire through supra-aortic access before any procedural adaptations are needed. This preliminary robotic placement creates a stable foundation that allows rapid exchange and addition of procedure-specific catheters without time-consuming manual repositioning.
Solution Approach 2:
The robotic hub system is designed with universal interfaces and control capabilities that can accommodate multiple types of catheters and guidewires. This universality allows the same robotic system to perform both initial access and subsequent procedural interventions without requiring system changes or extensive reconfiguration.
4Extent of automation
If robotic control with magnetic coupling is used, then precision and automation are improved, but the device complexity and sterilization requirements increase
Solution Approach 1:
A sterile barrier or drape is introduced as an intermediary between the non-sterile robotic control mechanisms and the sterile catheter system. This mediator allows magnetic coupling and mechanical force transmission while maintaining sterile separation, simplifying the sterilization requirements for each component.
Solution Approach 2:
The robotic system is divided into sterile and non-sterile components that can be independently processed. The catheter and hub interfaces that contact the patient are designed for sterilization, while the motorized control mechanisms remain outside the sterile field, reducing overall sterilization complexity.
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
Enhances the availability and efficiency of neurovascular procedures by enabling precise robotic control over multiple catheters, improving access to intracranial vessels, and reducing the complexity of setup and system adaptation.
Implementation Method 1
The drive magnets may each be independently axially movably carried by a support table. The drive magnets may be located outside of the sterile field, separated from the driven magnets by a barrier, and the driven magnets may within the sterile field.
Data Source
AI summary
A method of priming an interventional device assembly includes providing the interventional device assembly, the interventional device assembly including a first interventional device and a second interventional device, the second interventional device being positioned within the first interventional device. The method further includes reciprocally moving at least one of the first interventional device and the second interventional device relative to the other of the first interventional device and the second interventional device while flushing a lumen between the first interventional device and the second interventional device with fluid to remove microbubbles from the lumen.