Arteriography Robot Drive Module Merging Catheter and Guide Actuation
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Solution Overview
Problem
Current robotic systems for catheterization are complex and involve multiple mechanisms, which increases the risk of breakdown and complicates the insertion of flexible medical members, such as catheters, into patients, particularly under X-ray guidance.
Innovation Solution
A simplified robotic catheterization system with a flexible tube connected to a rotation drive part featuring a gear and a hollow connector, allowing for the passage of a guide wire, and a drive module with a pinion that generates rotational movement of the catheter, reducing the number of mechanisms and facilitating easier decontamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple dedicated drive modules are used to manage translation and rotation of catheter and guide, then the catheter can be precisely controlled, but the device complexity increases and the risk of breakdown increases
Solution Approach 1:
The patent combines the drive module for the catheter and the drive module for the guide into a single integrated drive module. This unified module contains a single motor that can simultaneously or independently control both the catheter and the guide, thereby reducing the total number of mechanisms while maintaining precise control capabilities.
Solution Approach 2:
The integrated drive module is designed to perform multiple functions: it can drive the catheter in translation and rotation, and simultaneously drive the guide in translation and rotation. This multi-functional design eliminates the need for separate dedicated drive modules for each component.
2Ease of manufacture
If multiple mechanisms are used to manage catheter displacement, then precise control is achieved, but the design becomes more complex and harder to decontaminate
Solution Approach 1:
By merging multiple drive mechanisms into a single integrated module, the patent reduces the number of interfaces, joints, and mechanical components that would otherwise be difficult to clean and decontaminate. The simplified structure with fewer parts makes the overall system easier to manufacture and maintain sterile conditions.
3Adaptability or versatility
If a complex control mechanism is used to manage electrophysiology catheter actuation independently of position, then remote actuation is achieved, but the control mechanism becomes very complex
Solution Approach 1:
The integrated drive module combines the actuation mechanisms for both the catheter and guide into a single unit with a single motor. This allows independent control of each component through coordinated operation of the same motor, achieving remote actuation capability without requiring separate complex control mechanisms for each component.
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 system allows for safer and more efficient catheterization with fewer mechanisms, reducing the risk of breakdown and simplifying the design, while maintaining the ability to manage both translation and rotation of the catheter, thus enhancing patient safety and operational ease.
Implementation Method 1
a pinion directly or indirectly motorised, and comprising a second rotation drive surface, the pinion meshing with the gear of the rotation drive part connected to the elongate flexible member
Data Source
AI summary
The robot for arteriography comprises a fixed base and a movable receptacle. The receptacle comprises a recipient receiving an elongate flexible member. A drive system drives the receptacle relative to the base. The receptacle comprises a drive module rigidly connected to the elongate flexible member in translation in operational configuration of the robot. The drive module is actuated in order to generate a rotational movement of the elongate flexible member.