Coil-Tipped Aneurysm Device for Wide-Neck Occlusion
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Solution Overview
Problem
Current surgical methods for treating aneurysms are highly invasive, posing risks such as anesthesia complications, bleeding, and infection, and existing minimally invasive techniques face challenges in accurately placing and retaining vaso-occlusive devices, especially in wide-neck aneurysms and bifurcation sites, leading to potential recanalization and blood flow issues.
Innovation Solution
An implantable aneurysm device with coil tips and a closure structure that provides improved neck coverage and stability, featuring a soft interface and a supplemental stabilizer to prevent migration, allowing for precise placement and maintenance within the aneurysm, while maintaining blood flow and preventing embolic material escape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional surgical methods are used to treat aneurysms, then complete occlusion and repair can be achieved, but the procedure becomes highly invasive with high risks of anesthesia complications, bleeding, and infection
Solution Approach 1:
The patent introduces a delivery catheter as an intermediary device to deliver the occlusive device through the bloodstream to the aneurysm site, avoiding open surgery. The catheter serves as a conduit that allows minimally invasive access to the target site, reducing surgical trauma while maintaining treatment effectiveness
Solution Approach 2:
The occlusive device is nested within the delivery catheter in a compressed state during delivery. Once positioned at the aneurysm site, the device is deployed from the catheter, allowing for minimally invasive placement while ensuring complete occlusion capability
2Object-affected harmful factors
If minimally invasive techniques are used to place vaso-occlusive devices, then surgical risks are reduced, but accurate placement and retention become difficult, leading to potential recanalization
Solution Approach 1:
The device is pre-loaded into the delivery catheter in a compressed, stable configuration before delivery. This preliminary preparation ensures that the device maintains its structural integrity during navigation through the vasculature and enables precise deployment at the target site without distortion
Solution Approach 2:
The device incorporates a soft interface specifically at the region that contacts the aneurysm wall, providing gentle engagement that prevents migration while maintaining secure placement. This localized softness ensures accurate retention without compromising overall device structural integrity
3Adaptability or versatility
If existing occlusive devices are deployed in wide-neck aneurysms, then access to the aneurysm is achieved, but device stability is compromised leading to migration and recanalization
Solution Approach 1:
The device incorporates a supplemental stabilizer that can dynamically adapt to the aneurysm geometry. The stabilizer features allow the device to adjust its configuration to match the specific shape and dimensions of wide-neck aneurysms, ensuring stable engagement and preventing migration while maintaining accessibility
Data Source
AI summary
The present disclosure describes implantable therapeutic devices and methods for endovascular placement of devices at a target site, such as an opening at a neck of an aneurysm. In particular, selected embodiments of the present technology comprise a coil loop, or tip, on a portion of the implantable device. The coil tip can provide a soft and/or smooth interface with the aneurysm and can provide improved coverage of the neck of the aneurysm.