Stent Delivery System With Variable Electrocautery Tip
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Solution Overview
Problem
Conventional stent delivery systems face issues with the flexibility and durability of the insertion tube, which can lead to accidental bending or breaking during use, and have a fixed electrocautery tip size that cannot be adjusted to suit varying treatment environments, posing risks to patients during medical procedures.
Innovation Solution
A stent delivery system with a conductive tube that integrates a spirally wound or woven conductive line for enhanced rigidity, and a variable-sized electrocautery tip with a tapered design and adjustable ring to change the cauterization hole size, ensuring flexibility and adjustable treatment options.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the insertion tube is made of insulating material to maintain electrical insulation properties, then the insulation property is electrically kept, but the tube becomes easily bent or deflected and may break due to external damage
Solution Approach 1:
The insertion tube is constructed as a composite structure with an inner insulating tube made of insulating material and an outer protective tube made of durable material. This composite design allows the inner tube to maintain electrical insulation properties while the outer tube provides mechanical strength and protection against bending and breaking.
2Device complexity
If the electrocautery tip has a fixed size, then the structure is simple, but the cauterization hole size cannot be adjusted according to the treatment environment
Solution Approach 1:
The electrocautery tip is designed with a movable ring structure that can be adjusted along the tapered electrode body. By moving the ring to different positions, the effective diameter of the cauterization hole can be varied, allowing adaptation to different treatment environments while maintaining a relatively simple overall structure.
Solution Approach 2:
The electrocautery tip is divided into segmented components including the electrode body, the movable ring, and the insulator. This segmentation allows the ring to be independently positioned to adjust the cauterization hole size, providing versatility without significantly increasing overall device 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
The system enhances the durability and flexibility of the insertion tube while allowing for adjustable cauterization hole sizes, minimizing tissue damage and improving the precision and safety of stent deployment during medical procedures.
Implementation Method 1
the electrocautery tip is a part that is connected to the current connector by a conductive line to form a hole by receiving a current to cauterize the body tissue
Implementation Method 2
a conductive line, and a delivery portion having one side connected to the electrocautery tip
Data Source
Figure 1
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AI summary
The present disclosure relates to a stent delivery system, and can be configured to include a connector portion connected to an external current source, an electrocautery tip connected to the connector portion by a conductive line, and a delivery portion having one side connected to the electrocautery tip, having the other side connected to the connector portion, and having the conductive line for connecting the electrocautery tip and the connector portion positioned therein, and a stent space portion in which a stent is positioned is formed adjacent to the electrocautery tip inside the delivery portion, and the delivery portion gradually moves and supplies the stent into the human body tissue, and according to the present disclosure, it is possible to integrate the conductive line and the tube, thereby improving the rigidity of the tube, and varying the size of the electrocautery tip.