Aneurysm Occluding Fan Device with Agent Channel
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Solution Overview
Problem
Current aneurysm treatment methods face challenges such as limited access, risk of rupture, and prolonged recovery due to difficulties in achieving sufficient occlusion and the need for permanent implantation of devices, especially in cranial aneurysms.
Innovation Solution
A device with a fan portion that expands to occlude the aneurysm neck, featuring a channel orifice and agent channel for delivering a coagulating agent, which creates a barrier to inhibit blood flow and prevent agent leakage, allowing for quick treatment and potential removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If embolic coils are used to occlude the aneurysm sac, then the aneurysm can be filled to create a thrombotic mass, but the procedure becomes time-consuming and requires ancillary devices such as stents or balloons to achieve sufficient packing density
Solution Approach 1:
The invention extracts the occlusion function from the aneurysm sac interior and relocates it to the aneurysm neck. By deploying a occlusion device at the neck that redirects blood flow away from the aneurysm sac, the procedure achieves effective occlusion without requiring time-consuming coil packing inside the sac, thereby reducing procedure time while maintaining reliability
Solution Approach 2:
The invention introduces a flow redirection device as an intermediary mechanism between the blood flow and the aneurysm sac. This device acts as a mediator that redirects blood flow through a puncture site or defect in the aneurysm sac wall, achieving occlusion效果 without direct filling of the sac, thus eliminating the need for ancillary devices and reducing procedure complexity and time
2Reliability
If embolic coils are packed densely to occlude the aneurysm neck, then effective occlusion can be achieved, but the procedure becomes difficult and time-consuming requiring ancillary devices
Solution Approach 1:
The invention extracts the occlusion function from the aneurysm sac interior and relocates it to the aneurysm neck. By deploying a occlusion device at the neck that redirects blood flow away from the aneurysm sac, the procedure achieves effective occlusion without requiring time-consuming coil packing inside the sac, thereby reducing procedure time while maintaining reliability
Solution Approach 2:
The invention introduces a flow redirection device as an intermediary mechanism between the blood flow and the aneurysm sac. This device acts as a mediator that redirects blood flow through a puncture site or defect in the aneurysm sac wall, achieving occlusion效果 without direct filling of the sac, thus eliminating the need for ancillary devices and reducing procedure complexity and time
3Speed
If the fan portion expands to occlude the aneurysm neck, then blood flow inhibition is rapid and effective, but the device must be delivered through a catheter requiring precise navigation
Solution Approach 1:
The invention employs a nested structure where the fan portion is contained within the catheter during delivery and automatically deploys upon reaching the target site. The fan portion is nested inside the catheter lumen in a compressed state, and upon deployment, it expands outward to occlude the aneurysm neck, providing rapid blood flow inhibition while simplifying the navigation process through automatic deployment mechanisms
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 solution enables rapid and effective inhibition of blood flow to the aneurysm, reducing the risk of rupture and recovery time, and avoids the need for permanent implantation by delivering a coagulating agent that instantly coagulates blood within the aneurysm, facilitating quick extraction of the device.
Implementation Method 1
The coagulating agent can be injected into the aneurysm. During injection of the coagulating agent, the fan portion can create a barrier to inhibit the coagulating agent from exiting the aneurysm.
Implementation Method 2
The fan portion can expand from a collapsed configuration to an occluding configuration approximate a center of an aneurysm neck
Data Source
AI summary
Devices can generally include a fan portion for occluding an aneurysm neck, a channel orifice opening in the fan portion, and an agent channel for delivering a coagulating agent through the orifice into the aneurysm. Devices can be delivered through a catheter to the aneurysm, the fan portion can expand to occlude the aneurysm neck, and coagulating agent can be injected into the aneurysm. During injection of the coagulating agent, the fan portion can inhibit the coagulating agent from exiting the aneurysm. After injection of the coagulation agent, the fan portion can collapse and the device can be extracted from the patient.