Vascular Closure Device with Retaining and Release Sleeves

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Solution Overview

Problem

Current methods for closing large puncture holes or access sites in blood vessels after minimally invasive surgical procedures are invasive and prone to complications.

Innovation Solution

A device comprising an implant and a delivery shaft with a retaining sleeve, release sleeve, and handle, designed to maneuver the implant into sealing engagement with the tissue, allowing for atraumatic exposure and secure closure of the aperture.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional cut-down surgical repair is used to close access sites, then the access site can be closed, but the procedure becomes very invasive and fraught with complications

Engineering Contradiction:

Improveclosure reliabilityVSAvoidinvasiveness and complications

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces traditional mechanical surgical closure (cut-down repair requiring incision and suturing) with a percutaneous device-based closure system. The implantable closure device is delivered through the existing access site using a delivery shaft, eliminating the need for surgical incision and manual suturing, thereby reducing invasiveness while maintaining closure reliability

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces an intermediary closure device that is delivered through the delivery shaft to seal the access site from within the vessel. This intermediary device acts as a mediator between the access site and the vessel wall, providing closure without requiring external surgical intervention, thus reducing complications associated with traditional open surgery

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If a delivery shaft with locking mechanism is used to maneuver the implant, then precise positioning and atraumatic exposure is achieved, but the device complexity increases

Engineering Contradiction:

Improveprecise positioning and atraumatic exposureVSAvoiddelivery shaft mechanism complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The delivery shaft is segmented into distinct functional components: a retaining sleeve with locking projection for securing the implant, a release sleeve for controlled disengagement, and a sheath carriage system with cam mechanism foratraumatic sheath removal. Each segment performs a specific function, allowing precise control while maintaining manageable complexity through modular design

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The delivery shaft employs dynamic mechanisms including a rotatable cam that converts rotational motion into linear movement of the sheath carriage, and a release sleeve that transitions between locked and unlocked states. These dynamic elements enable precise positioning and controlled deployment while maintaining ease of operation through intuitive mechanical feedback

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS12303118B2Vascular closure device

Publication Date: 2025.05.20 VIVASURE MEDICAL LTD

AI summary

Described herein are systems, devices, and methods for closing a perforation in any hollow vessel associated with a mammalian surgical procedure, for example a device for sealing an aperture in a tissue, the device comprising an implant and a delivery shaft configured to engage the implant, the delivery shaft comprising (i) a retaining sleeve, (ii) a release sleeve, and (iii) a handle coupled to the delivery shaft.