Self-expanding Plug Vascular Closure for Bleeding Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Vascular closure devices often experience peri-procedural bleeding, which complicates procedures and may require additional resources, and existing methods to control bleeding can interfere with calcified vessels or vascular closure device mechanisms.
Innovation Solution
A vascular closure device with a self-expanding plug and anchor deployers that secure tissue layers to reduce bleeding, featuring a self-expanding plug that expands to seal access holes in blood vessels and anchor deployers that tighten tissue layers to minimize passage size, allowing for effective closure without internal vessel inflation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a balloon is inflated inside the vessel to control bleeding, then bleeding is controlled, but it may interfere with calcification on the inside of a calcified vessel, possibly causing ruptures of plaque with subsequent risk for thromboses
Solution Approach 1:
The patent introduces a self-expanding plug as an intermediary device that seals the access hole from the outer surface of the vessel wall, rather than inflating a balloon inside the vessel. This mediator approach allows bleeding control without direct contact with the inner vessel wall and calcified plaque, eliminating the harmful effect while maintaining the beneficial bleeding control function
2Reliability
If manual compression is used to handle minor bleeding, then bleeding is controlled, but it occupies the use of one hand of the operator or requires the assistance of a second operator
Solution Approach 1:
The self-expanding plug is designed to be self-deploying and self-sealing. Once positioned at the access site, it automatically expands and seals the hole without requiring continuous manual compression or additional operator intervention, allowing the operator to perform other tasks simultaneously
3Productivity
If a self-expanding plug is used to seal access holes, then bleeding is reduced and procedural efficiency is enhanced, but the device complexity increases
Solution Approach 1:
The device is segmented into distinct functional modules: an outer housing for deployment, an inner hemostatic assembly containing the self-expanding plug, and anchor deployers for tissue securing. This segmentation allows each component to perform its specific function independently, simplifying the overall design while maintaining high procedural efficiency
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 device effectively reduces peri-procedural bleeding by sealing access holes in blood vessels using a self-expanding plug and securing tissue layers with anchor deployers, enhancing procedural efficiency and safety without risking vessel calcification or device mechanism interference.
Implementation Method 1
a self-expanding plug which is configured to self-expand from a compressed state sized to fit within the inner lumen of the outer housing to an expanded state with an outer transverse dimension which is larger than an outer transverse dimension of the elongate shaft
Implementation Method 2
Each of the anchor deployers may also include an anchor which is removably secured to the distal end of the deployment rod and which is configured to penetrate tissue in a distal direction
Data Source
AI summary
Self-expanding plug embodiments may be used in conjunction with vascular closure device embodiments to promote hemostasis at surgical sites or any other suitable location. In some cases, vascular closure device embodiments may include self-expanding plug embodiments in order to promote hemostasis at a surgical site during a vascular closure procedure.