Catheter Sheath Moveable Member Lumen Repositioning

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Solution Overview

Problem

Conventional catheter sheath devices face challenges in effectively removing undesired fluids, such as air, from their lumens, which can lead to complications like air embolisms during medical procedures, due to limitations in fluid trapping and flushing mechanisms.

Innovation Solution

A catheter sheath device with a moveable member that repositions lumens to allow for separate flushing and fluidic connection configurations, preventing the introduction of undesired fluids during catheter exchange and ensuring efficient fluid management through sealing surfaces and mechanical springs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a catheter sheath device uses a conventional fixed lumen structure, then the device structure is simple, but undesired fluids such as air cannot be effectively removed from the lumens

Engineering Contradiction:

Improveability to remove undesired fluidsVSAvoiddevice structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements a moveable member that can shift between positions to dynamically change the configuration of lumens. This allows the device to transition between a flushing configuration where lumens are separated and air can be removed, and a fluidic connection configuration where lumens are aligned for catheter delivery, thereby resolving the contradiction between reliability in fluid removal and device structural simplicity

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The device divides the lumen system into separate, independently controllable lumens (first lumen and second lumen) that can be positioned independently. This segmentation allows undesired fluids to be removed from one lumen without interfering with the function of another, improving the ability to prevent air embolisms while maintaining a manageable device structure

Inventive Principle:

Principle #1Segmentation

2Productivity

If the catheter sheath device allows fluidic connection between lumens for catheter delivery, then catheter exchange is efficient, but undesired fluids may be introduced into the body

Engineering Contradiction:

Improvecatheter exchange efficiencyVSAvoidintroduction of undesired fluids

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The device enables preliminary flushing of lumens to remove undesired fluids such as air before catheter delivery occurs. By performing this flushing action in advance while the moveable member is in the flushing configuration, the system ensures that no air embolisms are introduced during subsequent catheter exchange operations, thus resolving the contradiction between efficient catheter exchange and prevention of harmful fluid introduction

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The moveable member acts as an intermediary mechanism that controls the connection state between lumens. It can separate lumens during flushing to prevent fluid mixing and align lumens during delivery to enable efficient catheter exchange, thereby mediating between the conflicting requirements of productivity and safety

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If the catheter sheath device uses separate flushing configurations for each lumen, then thorough flushing is achieved, but the operation becomes more complex

Engineering Contradiction:

Improvethorough flushing capabilityVSAvoidoperational simplicity

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The device combines multiple flushing functions into a single integrated moveable member that controls the configuration of both lumens simultaneously. By merging the flushing control mechanisms into one unified structure, the system achieves thorough flushing of all lumens while maintaining ease of operation, as the moveable member can be actuated in a single motion to achieve the desired flushing configuration

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS20240366918A1Catheter sheath devices and methods of operating catheter sheath device

Publication Date: 2024.11.07 KARDIUM

AI summary

A catheter sheath device may include an elongate member and a moveable member. The elongate member may include a first lumen, and the moveable member may include a second lumen. The moveable member may be physically coupled to a portion of the elongate member to permit relative movement therebetween. A first relative movement between the moveable member and a portion of the elongate member may cause the second lumen to be positioned at a first location that permits delivery of at least a portion of a catheter into the second lumen but not into the first lumen from the second lumen. A second relative movement between the moveable member and the portion of the elongate member may cause the second lumen to be positioned at a second location that permits delivery of the at least the portion of the catheter through both the second lumen and the first lumen.