Intravascular Embolic Protection via Temporary Vessel Constriction
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Solution Overview
Problem
Current embolic protection devices (EPDs) are limited in effectively capturing vascular debris during peripheral vascular procedures due to their size, which is often insufficient for managing larger debris from peripheral vasculature lesions compared to coronary lesions.
Innovation Solution
An intravascular treatment system comprising a catheter with a distal and proximal portion, a first lumen, and an aspiration lumen, where an introducer with a needle or adhesive carrier is used to temporarily constrict blood vessels upstream or downstream of the intervention site, facilitating the capture and aspiration of embolic debris during vascular procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If commercially available EPDs are used for peripheral vascular procedures, then the device can capture small embolic debris, but the device is insufficient for capturing larger debris from peripheral vasculature lesions
Solution Approach 1:
The patent applies parameter changes by modifying the occlusion device dimensions to create a larger profile specifically for peripheral vascular procedures. The device includes an expanded occlusion element with increased surface area and volume compared to coronary EPDs, enabling capture of larger debris while maintaining the fundamental embolic protection function. This dimensional parameter change allows the device to adapt to the different debris characteristics in peripheral versus coronary vasculature.
2Quantity of substance
If a larger occlusion device is used to capture larger peripheral debris, then debris capture capacity increases, but device complexity and size increase
Solution Approach 1:
The patent employs nesting by placing the large peripheral EPD occlusion element within a delivery system that includes an introducer sheath and catheter. The occlusion device is collapsed or compressed within the delivery system for introduction through the vasculature, then expanded at the target site to achieve its full debris-capturing dimensions. This nested configuration allows the device to achieve large size for debris capture while maintaining a smaller profile during delivery, reducing procedural complexity.
3Reliability
If embolic debris is captured in a stagnant column of blood using occlusion devices, then debris can be removed via aspiration, but the procedure requires maintaining occlusion during the entire procedure
Solution Approach 1:
The patent applies preliminary action by establishing the occlusion and creating the stagnant blood column before performing the vascular intervention. The EPD is deployed and positioned upstream of the intervention site, allowing embolic debris to accumulate in the protected zone during the procedure. This preliminary establishment of protection allows the operator to perform the intervention without concern for real-time debris management, and aspiration can be performed systematically after the intervention is complete, reducing overall procedure time while maintaining reliability.
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 effectively captures and removes embolic debris from peripheral vascular procedures by temporarily constricting blood vessels, enhancing the safety of vascular interventions by reducing the risk of embolic events.
Implementation Method 1
introducing a pharmacological agent to the target area via the exit port, wherein the pharmacological agent initiates a temporary vasospasm at the target area
Implementation Method 2
providing an introducer within the first lumen of the catheter, wherein the introducer comprises a carrier having an adhesive
Implementation Method 3
aspirating debris resulting from the vascular interventional technique through the aspiration lumen
Data Source
AI summary
The present disclosure discussed a device, method and/or system for temporarily closing and/or constricting one or more blood vessels upstream and/or downstream of the vascular intervention site to allow for aspiration of vascular debris resulting from a peripheral vascular surgical procedure so as to effectively remove such debris.