Vessel Puncture Closure with Adjustable Needle Guide Suturing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vessel closure systems are time-consuming, costly, and lack operator control and flexibility, leading to potential hematoma risks and discomfort for patients due to inefficient wound sealing after catheterization procedures.
Innovation Solution
A vessel closure device with a guide member, needle guides, and an angle adjustment member that allows for precise deployment and anchoring of sutures, enabling quick and secure closure of vessel punctures, adaptable to varying lumen thicknesses and sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional external pressure method is used for wound closure, then wound sealing can be achieved, but the procedure is time-consuming and requires patient immobilization for substantial period
Solution Approach 1:
The closure device uses self-expanding needle guides that automatically deploy from the guide member when released, eliminating the need for continuous manual manipulation or external pressure application. The device performs the closure function autonomously after initial positioning, significantly reducing procedure time and patient immobilization requirements.
Solution Approach 2:
The needle guides are pre-loaded within the guide member in a compressed state, ready for immediate deployment. This preliminary preparation allows the operator to quickly deploy the closure mechanism without time-consuming assembly steps, thereby increasing productivity and reducing the time the patient must remain immobilized.
2Reliability
If traditional closure systems are used, then wound sealing can be achieved, but operator control and flexibility are limited leading to improper closure
Solution Approach 1:
The needle guides are designed with dynamic deployment capability, allowing the operator to control the timing and extent of needle guide extension from the guide member. This dynamic control mechanism provides both reliability through precise positioning and ease of operation through adjustable deployment, resolving the contradiction between closure control and operator flexibility.
Solution Approach 2:
The closure device is segmented into distinct functional components: the guide member, multiple needle guides, and deployment mechanisms. This segmentation allows the operator to control each component independently, providing enhanced flexibility in positioning and deploying the closure elements while maintaining reliable control over the overall closure process.
3Reliability
If needle guides are deployed radially outward for suture anchoring, then secure closure can be achieved, but the device structure becomes more complex
Solution Approach 1:
The needle guides are nested within the guide member in a compact configuration during storage and delivery. When deployed, they extend radially outward from the guide member to achieve secure suture anchoring. This nesting approach allows the device to maintain a simple, low-profile structure when not in use while providing the necessary radial deployment capability for reliable closure, thereby resolving the contradiction between anchoring security and device complexity.
Data Source
AI summary
A method for closing a puncture in tissue that includes advancing a guide member into proximity with the tissue, the guide member having a needle guide, positioning a distal end of the guide member with the needle guide toward the tissue to present an opening of the needle guide toward the tissue the needle guide cooperating with a suture securing device that is slidably coupled to the guide member and a suture attached to the suture securing device, deploying the suture securing device, the suture securing device comprising a body with an anchor point for the suture and features that allow the suture securing device to pierce the tissue and resist retraction through the tissue, and establishing tension in the suture to move the suture securing device toward another suture securing device to thereby close the puncture in the tissue.