Embolic Implant Deployment via Proximal Extension Bending
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Solution Overview
Problem
Existing embolic implant deployment systems require complex mechanical apparatuses with moving parts, making it difficult for physicians to grip and deploy small pull wires, which complicates treatment procedures and increases costs.
Innovation Solution
A simplified deployment system comprising a delivery tube, a proximal extension, a handle member, and a disconnection feature that allows the embolic coil to detach by bending the proximal extension to a predetermined angle, enabling the pull wire to move proximally and release the implant without auxiliary components or complex moving parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional mechanical deployment apparatuses with moving parts are used, then the implant can be deployed, but the device complexity increases and ease of operation deteriorates due to difficulty in gripping small pull wires
Solution Approach 1:
The patent removes the complex mechanical deployment apparatus with moving parts from the system. Instead, it extracts only the essential functional elements: a delivery catheter with a pull wire that can be directly manipulated by the physician through the catheter hub, eliminating unnecessary mechanical complexity while retaining deployment capability
Solution Approach 2:
The patent merges the deployment function directly into the catheter assembly by allowing the physician to grip and manipulate the pull wire through the catheter hub. This integration eliminates the need for separate mechanical deployment apparatuses, simplifying the overall system while maintaining reliable implant deployment
2Reliability
If traditional mechanical deployment apparatuses are used, then the implant can be deployed, but the ease of operation deteriorates due to difficulty in gripping small pull wires
Solution Approach 1:
The patent removes the intermediary mechanical deployment apparatus that created gripping difficulties. The pull wire is now directly accessible through the catheter hub, allowing physicians to grip and manipulate it easily with standard instruments or fingers, improving ease of operation while maintaining deployment reliability
Solution Approach 2:
The catheter hub serves as an effective intermediary that provides a convenient gripping interface for the pull wire. This mediator allows physicians to easily grasp and manipulate the thin pull wire through the hub structure without requiring specialized mechanical deployment tools, thus improving ease of operation
3Reliability
If complex mechanical deployment apparatuses are used, then the implant can be deployed, but procedural cost increases
Solution Approach 1:
The patent eliminates the need for expensive mechanical deployment apparatuses with moving parts. By using a simplified system where the pull wire is directly manipulated through the catheter hub, the invention reduces procedural costs while maintaining reliable implant deployment capability
Solution Approach 2:
The patent employs a disposable catheter assembly that integrates the deployment function, eliminating the need for expensive reusable mechanical deployment tools. This approach reduces procedural costs by using a cost-effective, single-use system that maintains full deployment functionality
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
Facilitates easy and cost-effective deployment of embolic implants by allowing the handle member and proximal extension to translate as a single unit, simplifying the gripping and retracting process, thereby reducing procedural complexity and costs.
Implementation Method 1
The disconnection feature may fix a position of the proximal extension in relation to the delivery tube and be configured to break at the predetermined bend angle to allow the proximal translation of the proximal extension and elongated member in relation to the delivery tube
Data Source
Figure 1A~1C
Figure 2A~3B
Figure 3A~3C
AI summary
An aneurysm treatment system can include an embolic implant, a delivery system, and a handle member that are collectively designed so that the combination of the handle member and the delivery system can be used as a deployment apparatus for the embolic implant. A proximal extension of the delivery tube can be placed inside a handle channel of handle member and the handle member can be manipulated to cause the proximal extension to bend to a predetermined angle with respect to the delivery tube, thereby separating the proximal extension from the delivery tube at a disconnection feature between the proximal extension and the delivery tube. The delivery tube includes a lumen having a pull wire that runs through the delivery tube and into the proximal extension. The proximal extension, pull wire, and handle member can be translated proximally in relation to the delivery tube to deploy the embolic implant.