Vein Junction Closure Device Using Adhesive Covering
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Solution Overview
Problem
Existing endovenous methods for treating varicose veins, such as laser, radio frequency, or glue bonding, are inadequate for precisely closing the vein juncture at the saphenofemoral or saphenopopliteal junctions, risking thrombosis or embolism, and do not effectively address insufficiency of perforating veins.
Innovation Solution
A device comprising a catheter with an expandable balloon and a circumferentially arranged covering that can be expanded to adhere to the vein wall using an adhesion agent, allowing for precise closure of vein junctures, including the saphenofemoral or saphenopopliteal junctions, and perforating veins.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If laser, radio frequency or glue bonding is used for closing vein junctures, then the treatment can be performed endovenously, but the cross cannot be closed with precision leading to thrombosis and embolism risk
Solution Approach 1:
The patent introduces a covering as an intermediary element between the balloon and the vein wall. This covering serves as a mediator that transfers the closing force from the expandable balloon to the vein wall at the junction, enabling precise closure while maintaining endovenous access. The covering acts as a transmission medium that ensures accurate positioning and force application at the critical junction area.
Solution Approach 2:
The patent employs a flexible covering that can be expanded to conform to the vein wall geometry at the junction. This thin film structure allows the device to adapt to the specific anatomical contours of the vein cross, providing precise closure while maintaining flexibility for endovenous insertion and positioning.
2Measurement precision
If treatment is performed too closely to the cross, then closure precision may be improved, but the risk of thrombosis and embolism increases
Solution Approach 1:
The patent applies beforehand cushioning by using the expandable covering to gradually close the vein junction in a controlled manner. The covering acts as a cushioning element that distributes the closing force over time and space, preventing sudden compression that could cause thrombosis. This gradual, controlled closure mechanism reduces the risk of embolism while maintaining closure precision.
Solution Approach 2:
The covering serves as a protective intermediary between the closing mechanism and the vein wall, mediating the force transmission to prevent direct trauma that could lead to thrombosis. This intermediary layer ensures that closure occurs through controlled compression rather than abrupt obstruction, reducing harmful effects.
3Object-affected harmful factors
If treatment is performed too far from the cross, then thrombosis risk is reduced, but variceal relapse can occur
Solution Approach 1:
The expandable covering acts as an intermediary that extends the closure mechanism's reach to the vein cross, allowing treatment to be performed at the optimal distance from the cross while still achieving effective closure. This intermediary structure enables the device to position itself precisely at the junction, providing reliable closure that prevents relapse without causing thrombosis.
Solution Approach 2:
The flexible covering can be expanded to reach the vein cross and provide closure at the optimal position, balancing thrombosis prevention with relapse avoidance. The flexibility of the covering allows it to conform to the vein anatomy and provide reliable closure at the critical junction area.
4Adaptability or versatility
If conventional endovenous methods are used, then treatment can be applied to superficial veins, but perforating vein insufficiency cannot be effectively treated
Solution Approach 1:
The patent creates a universal device that can treat both superficial veins and perforating veins through the same endovenous approach. The expandable covering mechanism can be positioned and expanded to address different vein types and locations, providing multi-functional capability that eliminates the need for separate treatment protocols for perforating veins.
Solution Approach 2:
The device incorporates dynamic positioning and expansion capabilities that allow it to adapt to different vein anatomies. The expandable covering can be dynamically positioned to target either superficial veins or perforating veins, and the expansion mechanism can be adjusted to suit the specific treatment requirements of different vein types, enhancing treatment versatility and effectiveness.
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 device enables safe and precise closure of vein junctures, preventing thrombosis and embolism while correcting reflux in perforating veins, thereby reducing the risk of variceal recurrence.
Implementation Method 1
at least one adhesion agent for acting on the expanded covering such that it adheres to a vein wall in order to close the vein juncture
Data Source
AI summary
The invention relates to a device for closing a vein juncture in the treatment of varicose veins including a catheter which can be inserted into a venous system and at the distal end of which an expandable balloon is arranged, a covering which is arranged circumferentially on the balloon and can be expanded by means of said balloon, wherein the proximal covering end is designed to be open, and at least one adhesion agent for acting on the expanded covering such that it adheres to a vein wall in order to close the vein juncture.