Multiple Inflation Endovascular Device Cover Segmentation
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Solution Overview
Problem
Conventional occlusion and therapeutic agent delivery devices are limited to single treatments due to their configuration with a single expandable member having a uniform functional surface, requiring invasive procedures and being unsuitable for multiple treatments or therapies at a therapeutic site.
Innovation Solution
A medical device featuring a catheter with a longitudinally movable cover that can be inflated multiple times, allowing different regions of the cover to provide various therapeutic agents, inflation profiles, and endoprosthesis deployment for repeated treatments without removal from the body lumen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single expandable member with a uniform functional surface is used, then the device structure is simple and easy to manufacture, but the device can only provide a single treatment and requires removal from the body for multiple treatments
Solution Approach 1:
The cover is divided into multiple distinct regions (first region with first therapeutic agent, second region with second therapeutic agent, third region with endoprosthesis) that can be sequentially positioned over the expandable member. This segmentation allows each region to provide a different treatment function while using a single expandable member, thereby enabling multiple treatments without increasing the fundamental device structure complexity.
Solution Approach 2:
The single expandable member is designed to support multiple functional regions on its surface, allowing it to perform multiple therapeutic functions (different drug deliveries and endoprosthesis deployment) during a single catheterization procedure. This multi-functionality resolves the contradiction by enabling versatile treatment capabilities without requiring multiple separate devices.
2Ease of operation
If multiple drug-coated balloons are used to provide multiple treatments, then each treatment can be optimized, but multiple invasive surgical procedures are required
Solution Approach 1:
Multiple therapeutic functions that would traditionally require separate drug-coated balloons are merged into a single device. The cover integrates multiple therapeutic regions (different drug coatings and endoprosthesis) that can be sequentially deployed from one catheter, eliminating the need for multiple invasive procedures while maintaining the ability to deliver multiple treatments.
Solution Approach 2:
The multiple therapeutic regions are nested within a single cover structure that can be sequentially positioned over the expandable member. This nesting allows multiple treatment capabilities to be contained within one device, reducing the quantity of separate devices needed while maintaining ease of operation through a single catheterization procedure.
3Adaptability or versatility
If a single uniform functional surface is used on the expandable member, then the manufacturing process is simple, but the device cannot provide varying therapeutic agents or treatment profiles
Solution Approach 1:
The cover is designed with different regions having different local qualities - the first region has a first therapeutic agent, the second region has a second therapeutic agent, and the third region has an endoprosthesis. This local quality variation allows the device to provide diverse therapeutic agents and treatment profiles while maintaining a relatively simple manufacturing process by applying different coatings or components to specific regions of the cover.
Data Source
AI summary
A medical device may include a catheter, an expandable member, a cover, and an actuator. The catheter may include a longitudinal axis, proximal and distal ends, and a cover lumen extending from the proximal to the distal end. The expandable member may include proximal and distal ends and may be disposed on a distal section of the catheter. The cover may include a first region that may be disposed along the expandable member, and a second region that may extend along a length of the catheter beyond the proximal end of the expandable member towards the proximal end of the catheter. A first end of the cover may invert into the cover lumen. The actuator may be coupled to the first end of the cover and configured to move the first end of the cover towards the proximal end of the catheter along the longitudinal axis of the catheter.