Vascular Puncture Sealant Deployment With Anti-Jamming Locking
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Solution Overview
Problem
Existing vascular puncture closure methods are time-consuming, costly, and uncomfortable for patients, often requiring prolonged immobilization and increasing the risk of hematoma due to bleeding before hemostasis, and can result in sealant jamming during premature tamping.
Innovation Solution
A vascular closure device with a sealant sleeve and support member, featuring a pull rack and push rack mechanism, includes a releasable lock to prevent premature advancement of the support member, allowing controlled exposure and tamping of the sealant, and provides a smooth force transition during deployment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the support member is advanced to tamp the sealant, then the sealant is compressed and hemostasis is achieved, but the sealant may become jammed in the sheath if advanced prematurely
Solution Approach 1:
The sealant sleeve is withdrawn proximally to expose the sealant before the support member is advanced to tamp it. This preliminary exposure action ensures the sealant is accessible and not trapped within the sheath, allowing safe and effective tamping while preventing jamming.
Solution Approach 2:
The device is divided into functionally independent components: the sealant sleeve for protecting and positioning the sealant, the support member for tamping, and the sheath for delivery. This segmentation allows each component to perform its specific function independently, with the sealant sleeve being withdrawn before tamping occurs.
2Reliability
If external pressure is applied to close the puncture, then the puncture is sealed, but the procedure becomes time-consuming and requires prolonged immobilization
Solution Approach 1:
The vascular closure device enables self-service closure by delivering a sealant that autonomously seals the puncture site. The sealant is positioned and tampered through the device, then the device is withdrawn, allowing the sealant to maintain closure without requiring prolonged external pressure or immobilization.
Solution Approach 2:
The device replaces prolonged mechanical external pressure with a controlled mechanical delivery system that positions and deploys a sealant. The sealant then maintains closure, eliminating the need for extended immobilization and reducing procedure time.
3Reliability
If the sealant is positioned inside the sheath, then protection and positioning are achieved, but the sealant cannot be exposed for tamping without risking jamming
Solution Approach 1:
The sealant sleeve is withdrawn proximally to expose the sealant before the support member is advanced to tamp it. This preliminary exposure action ensures the sealant is accessible and not trapped within the sheath, allowing safe and effective tamping while preventing jamming.
Solution Approach 2:
The sealant sleeve is designed to be movable relative to the sheath, allowing dynamic adjustment during the procedure. The sleeve can be withdrawn to expose the sealant when needed, then positioned to protect it during delivery, providing flexible control over the sealant's exposure state.
Data Source
AI summary
Closure devices for sealing a puncture and methods of sealing a puncture are described herein. A closure device may be used to position a sealant in a puncture. The sealant may be provided in a sheath which is retracted to expose the sealant in the puncture. A support member may be advanced to compress the sealant. The device may have a lock that prevents the support member from advancing prematurely. The lock may be unlocked when the sheath is at least partially retracted. The device may have an actuator that controls movement of the sheath and the support member. The lock may remain in a locked position until the sheath is at least partially retracted.