Single-Insertion Embolic Clot Retrieval With Repeated Device Passes

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Solution Overview

Problem

Existing devices for removing clot material from blood vessels are complex, cause vessel trauma, lack sufficient retaining structures, and require multiple invasive procedures for complete removal, leading to prolonged treatment times and patient trauma.

Innovation Solution

A single insertion delivery system that allows for repeated deployment and withdrawal of an interventional device through a guide catheter without fully removing it, using a retraction and aspiration device to capture and remove clot material efficiently.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple invasive procedures are used for complete clot removal, then complete clot removal is achieved, but patient trauma increases and treatment time prolongs

Engineering Contradiction:

Improvecomplete clot removalVSAvoidpatient trauma

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The interventional device is nested within the guide catheter, allowing the device to be repeatedly deployed and withdrawn through the same catheter access. This eliminates the need for multiple separate invasive procedures while achieving complete clot removal through multiple passes with the same catheter system.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The guide catheter is inserted and positioned in advance, creating a pre-established access pathway. Subsequent deployments of the interventional device utilize this pre-created access, avoiding repeated punctures and invasive insertions for each clot removal attempt.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If complex devices are used for clot removal, then clot removal capability is improved, but device complexity increases

Engineering Contradiction:

Improveclot removal capabilityVSAvoiddevice structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system is divided into separate functional components: the guide catheter for access, the interventional device for clot engagement and removal, and the aspiration system for extraction. This segmentation allows each component to be optimized independently while maintaining overall system effectiveness, reducing unnecessary complexity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The guide catheter serves multiple functions: providing access to the treatment site, guiding the interventional device, and enabling repeated deployments. The interventional device itself performs multiple functions including engaging clot material, being retrieved, and allowing redeployment. This multi-functionality reduces the need for multiple specialized devices.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If repeated catheter insertion is performed, then complete clot removal is achieved, but procedural time increases

Engineering Contradiction:

Improvecomplete clot removalVSAvoidprocedural time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The guide catheter remains in place throughout the procedure, maintaining continuous access to the treatment site. This allows for uninterrupted repeated deployments of the interventional device and continuous aspiration of clot material, eliminating downtime between procedures that would occur with repeated catheter insertions.

Inventive Principle:

Principle #20Continuity of useful action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables multiple passes for complete clot removal with reduced patient trauma by minimizing the need for repeated catheter insertion, enhancing procedural efficiency and safety.

Implementation Method 1

using a retraction and aspiration device to capture and remove clot material efficiently

Methodology Applied

Scientific EffectAspiration: Suction

Data Source

PatentUS20250213259A1Single insertion delivery system for treating embolism and associated systems and methods

Publication Date: 2025.07.03 STRYKER CORP

AI summary

Systems and methods for the intravascular treatment of clot material within a blood vessel of a human patient are disclosed herein. A method in accordance with embodiments of the present technology can include, for example, engaging an interventional device of a catheter system with clot material in a blood vessel and withdrawing the interventional device and the portion of the clot material through a guide catheter. In some embodiments, the catheter system can include an attachment/valve member coupled to a proximal portion of the guide catheter, and the method can include unsealing the attachment/valve member to facilitate withdrawing the interventional device through the attachment/valve member without significant retention of clot material within the attachment/valve member. The method can further include resealing and aspirating the guide catheter before advancing another interventional device to the clot material to again engage and remove clot material from the blood vessel.