Implantable Constraining Lumen for Controlled Stent Deployment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing implantable medical devices face challenges in precise orientation and deployment within the body, often requiring complex external manipulation to transition from a constrained configuration to a deployed state, which can lead to adverse interactions with other bodily components during delivery.
Innovation Solution
The implementation of a constraining line conduit around the circumference of the implantable medical device, allowing a constraining line to be tensioned to control the device's axial and radial constraints, facilitating controlled deployment and repositioning by providing a dedicated pathway that avoids interference with the stent pattern or graft components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If external manipulation is used to transition the device from constrained to deployed state, then deployment is achieved, but adverse interactions with bodily components occur and tissue damage increases
Solution Approach 1:
A constraining line is introduced as an intermediary element that passes through the stent structure and connects to a pull wire. This intermediary allows controlled deployment by transmitting force through the stent struts rather than direct external manipulation, reducing adverse interactions with bodily components during the transition from constrained to deployed state
Solution Approach 2:
The constraining system is segmented into multiple components: the constraining line that passes through individual stent struts, the pull wire that transmits force, and the delivery catheter. This segmentation allows precise control over deployment while minimizing tissue damage through distributed force application
2Ease of operation
If complex external manipulation is used for deployment, then the device can be deployed, but the deployment process becomes more complex and requires more force
Solution Approach 1:
The pull wire serves as a simple intermediary that translates external pulling motion directly into stent deployment through the constraining line. This eliminates complex manipulation mechanisms while maintaining precise deployment control, reducing both device complexity and operational complexity simultaneously
Solution Approach 2:
The stent structure itself serves the dual function of both the medical device and the deployment mechanism. The struts are configured to interact with the constraining line, allowing the stent to deploy itself through controlled release of the constraining line tension, eliminating the need for separate complex deployment mechanisms
3Ease of operation
If the constraining line passes through stent struts directly, then control is achieved, but interference with the stent pattern occurs
Solution Approach 1:
The constraining line conduit acts as an intermediary pathway that guides the constraining line through the stent structure without direct contact between the line and stent struts. This mediator prevents interference with the stent pattern while maintaining constraining control through the conduit's interaction with the stent framework
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
Enables precise control over the implantable device's configuration, minimizing tissue damage and simplifying deployment by reducing the force required for constraining, while allowing multiple constraining and unconstraining cycles for repositioning if necessary.
Implementation Method 1
The constraining line may be configured to constrain at least a portion of the implantable medical device in response to tensioning of the constraining line
Data Source
AI summary
Various aspects of the present disclosure are directed toward apparatuses, systems, and methods that include an implantable medical device and a constraining line conduit arranged around a circumference of the implantable medical device. The apparatuses, systems, and methods may also include a constraining line arranged through the constraining line conduit.