Stent Delivery Device Direct Contrast Dye Injection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional stent insertion methods using iodine-based contrast agents are time-consuming and result in excessive dye distribution throughout the body, leading to side effects such as kidney damage and allergic reactions, which is particularly problematic during medical emergencies like myocardial infarctions where time is critical.
Innovation Solution
A stent delivery device with multiple channels that allows for direct delivery of contrast dye to the target site through a stent, minimizing the amount of dye needed and reducing exposure to the rest of the body, while also enabling quick visualization and positioning of the stent using radiographic imaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional iodine-based contrast agents are injected into the bloodstream for stent visualization, then radiographic imaging is achieved, but the dye diffuses excessively throughout the body causing kidney damage and side effects
Solution Approach 1:
The patent extracts the contrast dye delivery function from the general bloodstream circulation system and creates a dedicated channel within the stent delivery device. This allows contrast dye to be delivered directly to the target site through the catheter and stent structure, rather than relying on systemic diffusion through the bloodstream, thereby reducing overall dye exposure while maintaining visualization capability
Solution Approach 2:
The stent delivery device acts as an intermediary structure that facilitates direct contrast dye delivery to the target site. The device includes a catheter with channels that guide the contrast dye from the injection site directly to the stent location, serving as a controlled pathway that eliminates the need for extensive systemic diffusion
2Measurement precision
If contrast dye is injected into the bloodstream for stent visualization, then the stent location can be identified, but significant time is required for the dye to diffuse to the target site
Solution Approach 1:
The stent delivery device is pre-positioned at the target site before contrast dye injection. The catheter and stent assembly are navigated to the correct location in advance, so that when contrast dye is injected through the device's channels, it immediately reaches the visualization target without requiring time for systemic diffusion
Solution Approach 2:
The dedicated channels within the stent delivery device serve as an intermediary transport pathway that directly connects the contrast dye source to the target site. This controlled delivery system eliminates the time delay associated with relying on bloodstream circulation and natural diffusion processes
3Measurement precision
If contrast dye is injected for stent insertion, then radiographic imaging is enabled, but excess dye remains in the body unnecessarily
Solution Approach 1:
The patent extracts the contrast dye delivery function from the systemic circulation system and confines it to a localized pathway through the stent delivery device. This ensures that contrast dye is used only where needed for visualization, eliminating the unnecessary systemic distribution that occurs with conventional injection methods
Solution Approach 2:
The contrast dye delivery is localized to the specific target site through the stent delivery device's channels. The dye is delivered precisely where visualization is needed rather than being distributed throughout the entire bloodstream, creating a localized effect that minimizes overall dye consumption and exposure
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
This approach reduces the time required for dye to reach the target site, minimizes side effects by limiting dye exposure, and enhances the speed and accuracy of stent placement during emergencies.
Implementation Method 1
A contrast dye may then be injected through the catheter, into the artery. The contrast dye may be an iodine contrast medium or other radio-opaque dye. The contrast dye enhances the visibility of blood flow, making any blockages clear and visible on a live x-ray
Data Source
AI summary
The present disclosure describes an endovascular delivery apparatus that enables a radio-opaque or contrast dye to be delivered directly to the site of a clot, alleviating the need to diffuse an large amount of dye through a wound path to effectively expose a clot to a radio-opaque or contrast dye. The present invention is advantageous, as less dye may be used, thereby mitigating side-effects caused by excess dye exposure, additionally, the present invention enables dye to reach the desired location more quickly, thereby increasing the chances of patient survival during emergency stent insertion procedures.