Precision-Controlled Conduit Restriction Band for Vessel-Safe Flow
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Solution Overview
Problem
Existing devices for banding blood conduits, such as arterio-venous fistulas, face limitations including complex installation, potential vessel damage, and lack of precise flow control, leading to complications like ischemia and cardiac issues.
Innovation Solution
A precision-controlled conduit restriction device featuring a soft polymer band with a tunnel section and adjustable mechanism, eliminating external connectors and adhesives, allowing for safe, easy installation and precise diameter adjustment without pinching or damaging the vessel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external connectors and adhesives are used to attach the band to the vessel, then the band can be securely fixed, but the vessel may be pinched or damaged during installation
Solution Approach 1:
The patent removes external connectors and adhesives from the system entirely. The band is designed to be self-contained with the adjusting mechanism integrated directly into the band structure, eliminating components that could pinch or damage the vessel during installation.
Solution Approach 2:
The adjusting mechanism is merged with the band structure itself rather than being a separate external component. This integration allows for secure fixation through the band's own structure without requiring additional connectors or adhesives that could harm the vessel.
2Stability of the object's composition
If a fixed curvature plastic segment is included in the band, then the band can maintain its shape, but the band cannot be circular and cannot adapt to different vessel anatomies
Solution Approach 1:
The band is designed with dynamic flexibility, allowing it to change curvature and shape as it is adjusted around different vessel anatomies. The band transitions from a flexible state during installation to a stabilized state when the adjusting mechanism is activated, providing both adaptability and shape stability as needed.
Solution Approach 2:
The band's physical parameters (curvature, diameter, shape) are changeable depending on the vessel anatomy it needs to accommodate. The adjusting mechanism allows the band to transition between different configurations, optimizing fit for various anatomical requirements while maintaining stability once positioned.
3Strength
If multiple adhesive bonding locations are used to secure the band, then the band attachment is strengthened, but the risk of toxic or allergic reactions increases
Solution Approach 1:
The patent completely eliminates adhesives from the system. The band attachment strength is achieved through the integrated adjusting mechanism and friction-based fixation rather than chemical bonding, removing the source of potential toxic or allergic reactions.
Solution Approach 2:
The device uses a disposable controller that provides the adjusting mechanism temporarily during installation. Once the band is secured through friction and mechanical engagement, the controller is removed, leaving no permanent foreign materials that could cause reactions.
4Ease of operation
If a snap-together connection is made at or near the outside surface of the vessel, then the connectors can be easily assembled, but the vessel may be pinched when the two parts are brought together
Solution Approach 1:
The patent removes external snap-together connectors from the system. The band is designed to be adjusted and secured without any separate connector components, eliminating the pinching hazard associated with bringing hard plastic parts together near the vessel surface.
Solution Approach 2:
The band itself acts as an intermediary between the adjusting mechanism and the vessel, providing a soft, compliant interface that prevents direct contact between hard components and the vessel wall during adjustment and securing.
Data Source
AI summary
The invention relates to a device for providing controlled restriction of a hollow conduit in a body. The device may include a band element having a tunnel section with a proximal opening and a distal opening. The device may further include a length of the band extending from the proximal opening. The device may further include a controller, removably connected to the distal opening, comprising an adjusting mechanism for changing a diameter of the band. The end of the band may be insertable through the proximal opening to form a loop around a hollow conduit, and the end of the band length may be advanced into the controller to permanently engage with the adjusting mechanism. After adjusting the diameter of the band, the band may be secured and the controller disconnected, leaving the band and securing means around the hollow conduit.