Vascular Surgery Drum Assembly for Tool Steering
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Solution Overview
Problem
Conventional vascular interventional surgery devices have complex structures that complicate the replacement and cleaning of surgical tools, particularly in vessels with branching points or curved regions, requiring precise manual steering and insertion of catheters and guide wires.
Innovation Solution
A vascular interventional surgery device featuring a simple structure with a drum assembly and steering assembly that allows a flexible wire-type or tubular surgical tool to be wound and rotated, facilitating easy insertion and withdrawal through a dedicated port, enabling precise control and tool replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a complex structure is used for inserting, extracting, or steering surgical tools, then the surgical tool can be precisely controlled in branching or curved vessels, but the device becomes difficult to operate and clean
Solution Approach 1:
The device is divided into separate modular components: a handle assembly, a catheter assembly, and a guide wire assembly. Each component can be independently inserted, manipulated, and removed from the patient's body. The catheter and guide wire can be separately advanced or withdrawn through the catheter lumen, allowing independent control and easy replacement of each element without affecting the others.
Solution Approach 2:
The guide wire is extracted as a separate element that can be independently advanced through the catheter lumen or removed entirely. The catheter itself can be withdrawn from the patient's body independently. This separation allows the operator to remove or replace the guide wire without removing the catheter, and to clean or sterilize components separately, significantly improving ease of operation and maintenance.
2Adaptability or versatility
If multiple components are used to navigate branching vessels, then the surgical tool can reach target organs, but the device structure becomes complex and time-consuming to replace
Solution Approach 1:
The guide wire and catheter are designed as flexible, dynamic elements that can bend and conform to the natural curvature and branching of blood vessels. The guide wire features a flexible distal tip that can be manually steered to follow vessel contours, while the catheter can dynamically adjust its shape as it navigates through branching anatomy. This dynamic flexibility allows navigation through complex vascular structures without requiring rigid, time-consuming mechanical adjustments.
Solution Approach 2:
The guide wire is pre-formed with a specific curvature or shape that anticipates the anatomy of the target vessel before insertion. This preliminary shaping allows the wire to naturally follow the vessel path upon insertion, reducing the time required for manual steering and positioning. The catheter can also be pre-shaped or pre-loaded with the guide wire in a configuration that facilitates rapid deployment and navigation.
Data Source
AI summary
According to a disclosed embodiment, a vascular interventional surgery device includes: a fixed frame; a steering assembly coupled to the fixed frame so as to be rotatable about a first axis, and including a first introduction/discharge port aligned on the first axis; and a drum assembly coupled to the steering assembly so as to be rotatable about a second axis extending in a direction that is transverse to the first axis, including a rotation unit configured to allow a flexible wire-type or tubular surgical tool that is insertable into a vessel to be wound in a circumferential direction about the second axis, and configured to guide the surgical tool such that the surgical tool is withdrawn outward or inserted inward through the first introduction/discharge port when the rotation unit rotates about the second axis.