Shock Absorbing Aneurysm Device with Stabilizer
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Solution Overview
Problem
Current surgical methods for treating aneurysms are highly invasive and pose risks, and conventional vaso-occlusive devices face challenges in positioning and maintaining placement, especially for wide-neck aneurysms and those at vascular bifurcations, leading to potential migration and interference with blood flow.
Innovation Solution
The development of implantable therapeutic devices with shock absorbing structures and supplemental stabilizers that include a closure structure, shock absorbing assemblies, and attachment features to inhibit dislodgement and secure placement within the aneurysm, utilizing a leaf-spring mechanism to dampen movement and enhance junction stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional vaso-occlusive devices are used to treat aneurysms, then the aneurysm cavity can be filled and blood flow can be occluded, but the devices may migrate or project from the cavity interfering with blood flow and nearby structures
Solution Approach 1:
The device incorporates a stabilizer that is deployed before the coils to establish initial anchoring in the aneurysm cavity. This preliminary stabilization prevents subsequent migration of the coils during and after deployment, addressing the retention issue before it arises.
Solution Approach 2:
The stabilizer is constructed from flexible materials that allow it to conform to the irregular geometry of the aneurysm cavity and neck. This flexibility enables the stabilizer to adapt to various aneurysm shapes while maintaining secure engagement, preventing device migration.
2Reliability
If surgical methods are used to clip brain aneurysms, then the aneurysm can be repaired from outside the blood vessel, but the procedure requires opening the skull and carries high risks of anesthesia, bleeding, and infection
Solution Approach 1:
The invention replaces the mechanical surgical clipping system with an endovascular delivery system. The device is delivered through catheters inserted via peripheral vessels, eliminating the need for craniotomy and direct surgical access to the aneurysm, thereby reducing surgical risks while maintaining repair effectiveness.
Solution Approach 2:
The device uses a delivery catheter as an intermediary to transport the aneurysm treatment device to the target site. This intermediary approach allows the device to be positioned within the aneurysm cavity without requiring direct surgical exposure, enabling minimally invasive treatment.
3Stability of the object's composition
If vaso-occlusive coils are implanted to fill the aneurysm cavity, then the space is occupied and embolus formation is facilitated, but the coils may shift or migrate after deployment
Solution Approach 1:
The invention merges the stabilizer function with the coil structure, creating an integrated device where the stabilizer and coils work together as a unified system. The stabilizer provides anchoring while the coils provide filling and embolization, with both components contributing to overall device retention and positional stability.
Solution Approach 2:
The stabilizer is deployed first to establish a stable foundation before the coils are released. This preliminary anchoring action ensures that subsequent coil deployment occurs within a stabilized framework, preventing coil migration and maintaining proper positioning.
4Ease of operation
If the aneurysm device needs to be delivered endovascularly, then minimally invasive treatment is achieved, but accurate implantation within the internal volume of the cavity is difficult
Solution Approach 1:
The stabilizer is deployed first to establish a stable foundation and define the treatment zone before the coils are released. This preliminary anchoring action creates a reference framework that guides subsequent coil placement, ensuring accurate implantation within the aneurysm cavity.
Solution Approach 2:
The stabilizer is constructed from flexible materials that allow it to conform to the irregular geometry of the aneurysm cavity and neck. This flexibility enables the stabilizer to adapt to various aneurysm shapes while maintaining secure engagement, facilitating accurate positioning despite the minimally invasive approach.
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 solution effectively prevents device migration and maintains blood flow by securing the aneurysm device within the aneurysm neck, reducing the risk of complications associated with invasive procedures and improving the stability of the device post-deployment.
Implementation Method 1
a shock absorbing structure operably coupled with the framework. The shock absorbing structure comprises a moveable assembly including a leaf-spring mechanism
Implementation Method 2
a proximal support framework connected to the distal framework portion, the support framework configured to press outward against a luminal wall of the blood vessel
Data Source
AI summary
The present technology relates to systems and methods for enclosing an anatomical opening, including shock absorbing aneurysm devices. In some embodiments, the systems include a closure structure comprising a distal-facing aspect configured to at least partially occlude the aneurysm and a supplemental stabilizer connected to the closure structure. The supplemental stabilizer can be configured to reside in a parent artery and press outward against a luminal wall thereof. The systems can further include a shock absorbing structure coupled to a proximal end portion of the closure structure and to a distal end portion of the supplemental stabilizer. The shock absorbing structure can inhibit movement or dislodgement of the closure structure or the supplemental stabilizer relative to the aneurysm.