Concentric Interventional Device Priming by Axial Separation

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Solution Overview

Problem

Current neurovascular procedures face challenges such as limited availability of trained interventionalists, complex setup requirements, and difficulty in achieving supra-aortic access, particularly in Type III arches, which hinders efficient neurovascular treatment.

Innovation Solution

A robotic control system for catheters that includes a guidewire hub, guide catheter hub, and access catheter hub, allowing for precise adjustment and deflection, along with a control console for independent manipulation, enabling robotic placement and advancement of catheters to achieve supra-aortic access and facilitate neurovascular procedures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If manual catheter manipulation is used, then the surgeon can control the catheters, but the complexity of setup and demand for surgeon dexterity increase

Engineering Contradiction:

Improveease of catheter controlVSAvoidcomplexity of setup

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent replaces manual mechanical manipulation of catheters with a robotic system that uses magnetic fields to control catheter position and orientation. The robotic control system includes actuators that generate magnetic fields to remotely manipulate the catheters, eliminating the need for direct manual handling and reducing setup complexity.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces a robotic control system as an intermediary between the operator and the catheters. This intermediary system handles the complex manipulation tasks, allowing the operator to control multiple catheters simultaneously through a simplified interface while the robotic system manages the dexterous maneuvers required for supra-aortic access.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If multiple coaxial catheters are used, then neurovascular procedures can be performed, but inadvertent catheter motion occurs due to frictional interplay

Engineering Contradiction:

Improvecapability to perform neurovascular proceduresVSAvoidcatheter position stability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent replaces mechanical friction-based catheter interaction with magnetic field-based control. The robotic system uses magnetic actuators to independently control each catheter's position and orientation without physical contact, eliminating the frictional interplay that causes inadvertent motion while maintaining the ability to perform complex neurovascular procedures.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Productivity

If supra-aortic access is attempted in Type III arches, then neurovascular treatment can be reached, but the access is challenging to achieve

Engineering Contradiction:

Improveefficiency of neurovascular treatmentVSAvoidease of achieving supra-aortic access

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

The patent uses a robotic control system with magnetic actuators to navigate catheters through complex Type III aortic arches. The magnetic field-based manipulation provides precise control over catheter curvature and position, enabling successful supra-aortic access in challenging anatomies that are difficult to reach with manual techniques.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The robotic control system dynamically adjusts catheter position, orientation, and curvature in real-time to navigate the complex geometry of Type III aortic arches. The system can adapt to varying anatomical conditions and provide continuous control throughout the catheter advancement process, making supra-aortic access more achievable in difficult cases.

Inventive Principle:

Principle #15Dynamics

4Adaptability or versatility

If guidewire and access catheter removal is performed to add procedure catheter, then neurovascular treatment can be adapted, but the process is time consuming

Engineering Contradiction:

Improveadaptability for neurovascular treatmentsVSAvoidtime for catheter exchange

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The robotic control system is designed to handle multiple catheter types and procedures through a single unified platform. The system can control access catheters, procedure catheters, and various therapeutic devices using the same magnetic actuation mechanism, allowing rapid switching between different catheters and procedures without time-consuming manual reconfiguration.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The robotic control system acts as an intermediary that manages catheter exchanges and system reconfiguration. When a procedure catheter needs to be added or exchanged, the robotic system coordinates the removal of the access catheter and the insertion of the procedure catheter in a streamlined sequence, significantly reducing the time required for adaptation compared to manual techniques.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS12447317B2Method of priming concentrically stacked interventional devices

Publication Date: 2025.10.21 IMPERATIVE CARE INC

AI summary

A method of priming an interventional device assembly includes providing the interventional device assembly including a first interventional device coupled to a first hub and a second interventional device coupled to a second hub arranged in a concentric stack, the second interventional device being positioned within a lumen of the first interventional device. The method includes coupling the interventional device assembly to a drive system while arranged in the concentric stack, axially advancing the first interventional device and the first hub relative to the second hub to decrease a depth of insertion of the second interventional device within the lumen of the first interventional device while maintaining a distal end of the second interventional device within the lumen of the first interventional device, and flushing the first interventional device with fluid after decreasing the depth of insertion of the second interventional device within the lumen of the first interventional device.