Catheter Applicator for Liquid Active Substances
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Solution Overview
Problem
Existing catheter technologies face challenges in precisely and efficiently applying liquid active substances to stents due to instability and imprecision in the application process, particularly in a surgical environment.
Innovation Solution
A catheter with an applicator device featuring a protective cover and flexible boundary walls for a sealed active substance container, allowing for controlled and defined application of liquid active substances directly before surgical use, ensuring accurate dosing and easy disposal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If liquid active substances are applied to stent surfaces using spray devices, then the active substance can be applied to the stent, but the dosing precision is very imprecise and the procedure is complicated and time-consuming
Solution Approach 1:
The applicator device is divided into distinct functional segments: a sealed container for the liquid active substance, a delivery mechanism with controlled opening, and the stent. This segmentation allows precise control of the liquid release and simplifies the application procedure by separating the storage and delivery functions.
Solution Approach 2:
The liquid active substance is pre-loaded into a sealed container on the applicator device before the surgical procedure. This preliminary preparation eliminates the need for complex spraying equipment and allows for precise, controlled application directly to the stent surface during the procedure.
2Reliability
If liquid active substances are stored on stent surfaces, then the active substance can be applied, but stability under storage is compromised due to drying phenomena or demixing effects
Solution Approach 1:
The stent is nested within or alongside the sealed container holding the liquid active substance. This nesting arrangement allows the liquid to be stored in a sealed environment that prevents drying and demixing, while still enabling direct application to the stent surface when needed.
Solution Approach 2:
The liquid active substance is stored in a sealed container that creates a protected environment, preventing exposure to air and external conditions that would cause drying or demixing. This sealed environment maintains the stability and composition of the liquid substance during storage and transport.
3Manufacturing precision
If the applicator device is designed with sealed containers for liquid active substances, then dosing precision is improved, but the device structure becomes more complex
Solution Approach 1:
The sealed container for the liquid active substance is integrated directly onto the applicator device, merging the storage and delivery functions into a single unit. This integration improves dosing accuracy by ensuring the liquid is delivered directly from the sealed container to the stent, while the compact design minimizes overall device complexity.
Data Source
AI summary
The invention relates to a catheter, in particular an endovascular catheter, having an applicator device for liquid active substances for applying same to an active substance storage zone mounted on the catheter.