TPU Embolization Assembly for Wide-Neck Aneurysm Flow Blockage
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Solution Overview
Problem
Current treatments for cerebral aneurysms, such as endovascular coiling and WEB Embolization System, require multiple coils and additional interventions, especially for wide neck aneurysms, leading to increased procedural time and cost.
Innovation Solution
A multiple component cerebral aneurysm device with a self-expanding frame and filler, optionally with a stent base and disk, designed to minimize the use of coils and stabilize within the aneurysm, preventing blood flow without requiring additional devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If endovascular coiling is used to treat cerebral aneurysm, then blood flow into the aneurysm is blocked, but the number of coils required increases procedural time and cost
Solution Approach 1:
The patent combines multiple coils into a single integrated coil assembly with a delivery catheter system. The coil assembly includes a distal coil portion and a proximal coil portion connected by a connector, allowing simultaneous deployment of multiple coils as one unit rather than individually, thereby reducing procedural time while maintaining effective blood flow blockade.
Solution Approach 2:
The coils are pre-assembled into a complete embolization assembly within the delivery catheter before patient intervention. The distal coil, connector, and proximal coil are pre-positioned and connected, allowing for rapid deployment as a single unit without requiring time-consuming individual coil manipulation during the procedure.
2Reliability
If multiple coils are used to pack the aneurysm, then blood flow is effectively blocked, but the cost of the procedure increases
Solution Approach 1:
The patent merges multiple individual coils into a single integrated coil assembly that functions as one unit. The assembly includes a distal coil portion, a proximal coil portion, and a connector, which together provide effective aneurysm packing while counting as a single device intervention rather than multiple separate coil procedures.
Solution Approach 2:
The coil assembly serves multiple functions simultaneously: the distal coil portion provides embolization within the aneurysm sac, the connector provides structural linkage and potential sealing function, and the proximal coil portion provides additional embolization and anchoring. This multi-functional design reduces the need for additional separate devices or coils.
3Device complexity
If WEB Embolization System is used, then fewer coils are needed, but additional devices such as bridge stent are still required for wide neck aneurysms
Solution Approach 1:
The coil assembly is designed to be universally applicable to various aneurysm types including wide neck aneurysms. The combination of distal and proximal coil portions with the connector provides both embolization capability and neck support function, eliminating the need for separate bridge stent devices while maintaining adaptability to different aneurysm geometries.
Solution Approach 2:
The patent merges the embolization function and neck support function into a single integrated coil assembly. The distal coil provides embolization, the connector provides structural support at the neck region, and the proximal coil provides additional anchoring and sealing, thereby combining multiple device functions into one unit that works for both narrow and wide neck aneurysms.
4Reliability
If bridge stent is added for wide neck aneurysm treatment, then coil herniation is prevented, but the procedure becomes more complex and time-consuming
Solution Approach 1:
The patent integrates the stabilizing function previously provided by separate bridge stents directly into the coil assembly structure. The connector portion of the coil assembly provides structural support and anchoring within the aneurysm neck, preventing coil herniation without requiring an additional stent device, thereby maintaining coil stability while reducing overall procedure complexity.
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
Reduces procedural time and cost by minimizing the number of coils needed and providing effective blood flow blockade in various neck sizes, including wide neck aneurysms, with potential for drug delivery capabilities.
Implementation Method 1
a TPU substrate (204) in a compressed configuration within a delivery catheter and expandable to a self-expanded configuration
Implementation Method 2
The TPU substrate (204) forms an embolization device (10) that creates friction and physical barrier to resist blood flow
Implementation Method 3
The embolization device blocks blood flow into the aneurysm through physical barrier formation
Data Source
AI summary
The present invention compromises a cerebral aneurysm device designed for insertion in various cerebral aneurysm types and block blood flow into a cerebral aneurysm to prevent it from rupturing.