Multi Guidewire Sheath With Rotating Hub Locking Mechanism

Solution Overview

Problem

Existing endovascular procedures require multiple guidewires for accessing bifurcations and multiple interventional devices, leading to entanglement and increased procedural time, posing risks to patients.

Innovation Solution

A multi-guidewire sheath with a single lumen and an engagement system that allows independent positioning and securement of multiple guidewires, using a rotating hub with wire-lock points to prevent entanglement and facilitate simultaneous access to multiple target vessels.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple guidewires are inserted into a vessel to access bifurcations and multiple interventional devices, then access to multiple target vessels is achieved, but the guidewires become crossed or entangled within the vessel

Engineering Contradiction:

Core Design Contradiction:

Adaptability or versatilityVSObject-generated harmful factors

Solution Approach 1:

Multiple guidewires are nested within a single sheath lumen, with each guidewire independently positionable and secureable within the sheath. The sheath acts as a containing structure that prevents external entanglement while allowing individual wire access to multiple vessels through selective deployment

Inventive Principle:

Principle #7Nested doll (Nesting)

2Adaptability or versatility

If multiple guidewires are inserted into a vessel to access bifurcations and multiple interventional devices, then access to multiple target vessels is achieved, but the procedural time increases

Engineering Contradiction:

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

Multiple guidewires are pre-loaded and organized within the sheath before the procedure begins. The engagement system with pre-positioned wire-lock points allows for rapid deployment of individual guidewires without requiring time-consuming manual positioning or reconfiguration during the procedure

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If multiple guidewires are inserted into a vessel to access bifurcations and multiple interventional devices, then access to multiple target vessels is achieved, but the risks to the patient increase

Engineering Contradiction:

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The sheath provides a protective containing structure that isolates multiple guidewires during insertion and deployment, preventing them from becoming entangled or causing unintended vascular damage. This controlled environment reduces procedural risks to the patient

Inventive Principle:

Principle #7Nested doll (Nesting)

Data Source

PatentUS8728011B2Multi wire sheath

Publication Date: 2014.05.20

AI summary

A multi-guidewire sheath (MGS) is provided for cases where simultaneous guidewire access to multiple target arteries is required. Embodiments of the MGS have multiple guidewires in a single sheath configured with a single lumen. The MGS incorporates an engagement system to independently secure the one or more guidewires within the sheath to maintain the separate positions of the guidewires. Embodiments of the MGS are configured with a taper from the desired intra-arterial portion (e.g., conventional French sizes) to a larger diameter for the portion of the sheath outside (distal) the vessel. The distal segment of the MGS has a larger diameter to accommodate the engagement system to secure the independent positions of multiple guidewires, and a hemostatic valve seal and slit mounted in a rotating hub. The engagement system has a series of wire-lock engagement points positioned along the circumference of the MGS.