Catheter Rotary Bending Control for Drug Delivery
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional drug solution injection devices face challenges in operability and accuracy due to limitations in controlling the position and direction of catheter tips, leading to inefficiencies in drug delivery.
Innovation Solution
The catheter device incorporates a rotary operation section and a bending operation section, allowing for intuitive and precise control of the catheter tip's position and direction through a combination of rotating and bending mechanisms, while the drug solution injection device includes a plunger system for controlled drug ejection with a wire transmission mechanism and biasing members to ensure accurate dosing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional catheter device is used, then the structure is simple, but the operability and positioning accuracy are insufficient
Solution Approach 1:
The catheter device is divided into multiple functional sections: a shaft portion, a distal end portion with bending capability, and an operating part with separate rotary and bending operation sections. This segmentation allows each part to perform its specific function independently, improving overall operability while maintaining manageable complexity
Solution Approach 2:
The operating part integrates multiple functions into a unified structure that can perform both rotary movement and bending operations. The operating wire serves dual purposes in transmitting both rotational force and bending force, reducing the need for separate control mechanisms and simplifying the overall device structure
2Manufacturing precision
If the catheter tip position and direction are difficult to control, then the device structure is simple, but the injection accuracy is poor
Solution Approach 1:
The operating part provides real-time feedback to the operator through its mechanical structure, allowing the operator to feel the resistance and position changes. This tactile feedback enables precise control of the catheter tip position and direction without requiring complex electronic sensing systems
Solution Approach 2:
The catheter device incorporates dynamic control capabilities where the distal end portion can be bent to various angles and the entire catheter can be rotated. This dynamic adjustability allows the catheter tip to reach precise positions in complex anatomical structures while maintaining a relatively simple control mechanism
Data Source
AI summary
A catheter device includes a first catheter. The first catheter includes a first catheter shaft and an operating part that is attached to a proximal end portion of the first catheter shaft and operates the first catheter shaft. The operating part includes a rotary operation section that rotates the first catheter shaft about a central axis of the first catheter shaft, and a bending operation section that bends a distal end portion of the first catheter shaft.