Mechanical Detachment System for Embolic Coil Deployment
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Solution Overview
Problem
Traditional systems for delivering embolic coils to cerebral aneurysms using electrolytic detachment mechanisms often cause undesired thrombotic events, have high detachment failure rates, and are time-consuming, leading to increased risks of blood clots and anoxic injuries.
Innovation Solution
A mechanical detachment system employing a conduit with a deployment location and a detachment mechanism featuring a tab made of memory material, an anchoring element, and radiopaque markers for precise and rapid deployment of embolic coils within the aneurysm, reducing the risk of thrombotic events and detachment failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electrolytic detachment mechanisms are used to deploy embolic coils, then the detachment can be achieved, but gas bubbles are generated at the detachment zone causing thrombotic events
Solution Approach 1:
The patent replaces the electrolytic detachment mechanism with a purely mechanical detachment system. The mechanical detachment system uses a push rod that physically pushes the embolic coil out of the catheter through a mechanical action, eliminating the need for electrical current and preventing gas bubble generation that occurs with electrolytic mechanisms.
2Reliability
If electrolytic detachment systems are used, then embolic coil deployment is achieved, but the detachment time is significantly longer
Solution Approach 1:
The mechanical detachment system eliminates the time-consuming heating process required by electrolytic systems. The push rod can rapidly and directly push the embolic coil out of the catheter in a single mechanical motion, significantly reducing the detachment time while maintaining reliable deployment.
3Productivity
If electrolytic detachment systems are used, then embolic coil deployment is achieved, but the detachment failure rate is high
Solution Approach 1:
The mechanical detachment system replaces electrical components with a simple mechanical push rod mechanism, eliminating failures related to electrical equipment malfunction or current induction problems. The mechanical system provides direct, reliable force transmission to ensure successful detachment.
4Reliability
If multiple embolic coils are delivered using traditional systems, then complete aneurysm occlusion is achieved, but the procedure time increases and risk of thrombotic events increases
Solution Approach 1:
The mechanical detachment system enables rapid sequential deployment of multiple embolic coils. Each coil can be quickly detached using the same mechanical push rod mechanism, significantly reducing the cumulative procedure time when multiple coils are required while maintaining effective aneurysm occlusion.
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 mechanical system significantly reduces detachment time, lowers the risk of thrombotic complications, and enhances the reliability of embolic coil deployment, providing a safer and more efficient method for treating intracranial aneurysms.
Implementation Method 1
a tab comprising a memory material and having a first position and a second position, wherein the memory material is configured to move the tab from the first position to the second position
Data Source
AI summary
Systems and methods are provided for delivering and mechanically detaching embolic coils. The systems disclosed herein comprise a mechanical detachment mechanism to intravascularly release an embolic coil. The methods disclosed herein comprise a various triggering mechanisms to detach embolic coils.