Antegrade Hemodynamic Support via Venous Access

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Solution Overview

Problem

Current hemodynamic support devices for left ventricular failure require large bore arterial access, leading to up to 40% access site complications and limited mobility for patients, especially those with peripheral artery disease or small arteries.

Innovation Solution

The method involves providing a hemodynamic support system with catheters that are advanced antegrade through veins, bypassing arterial access, allowing for blood removal and return through a system that alleviates the heart's workload and supports normal body functions without the need for large bore arterial access, using catheters with multiple lumens and radially expandable elements to prevent tissue obstruction.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If large bore arterial access is used for hemodynamic support, then adequate blood flow capacity is achieved, but access site complications increase to up to 40%

Engineering Contradiction:
Improveblood flow capacityVSAvoidaccess site complication rate
Core Design Contradiction:
Quantity of substanceVSReliability

Solution Approach 1:

The patent inverts the traditional approach by accessing the arterial system through veins (venous access) rather than through arteries (arterial access). The catheter is introduced into a vein, advanced through the right heart chambers, across the mitral valve, and into the left ventricular outflow tract to reach the aorta. This inversion allows adequate blood flow capacity through large bore venous access while avoiding the high complication rates associated with arterial puncture and large bore arterial catheterization.

Inventive Principle:
Principle #13The other way round (Inversion)

2Quantity of substance

If large bore arterial access is obtained surgically or percutaneously, then hemodynamic support is provided, but patient mobility is limited due to groin access site

Engineering Contradiction:
Improveblood flow capacityVSAvoidpatient mobility
Core Design Contradiction:
Quantity of substanceVSEase of operation

Solution Approach 1:

The patent uses venous access (accessing veins rather than arteries) to achieve arterial hemodynamic support. This allows the catheter to be introduced through peripheral veins such as the femoral vein or internal jugular vein, which are more accessible and less restrictive to patient mobility compared to large bore arterial access sites in the groin. The inverted approach maintains adequate blood flow capacity while improving ease of patient care and mobility.

Inventive Principle:
Principle #13The other way round (Inversion)

3Reliability

If arterial access is performed in patients with peripheral artery disease or small arteries, then hemodynamic support is attempted, but successful access is compromised by vascular disease

Engineering Contradiction:
Improveaccess success rateVSAvoidimpact of peripheral artery disease
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent circumvents the harmful effects of peripheral artery disease by inverting the access route. Instead of attempting to access the arterial system through diseased peripheral arteries, the catheter is introduced through veins (which are typically not affected by peripheral artery disease) and navigated through the heart to reach the aorta. This inversion eliminates the barrier posed by peripheral vascular disease and improves access success rate in this patient population.

Inventive Principle:
Principle #13The other way round (Inversion)

4Quantity of substance

If retrograde arterial access is used, then hemodynamic support is provided, but coaxial blood flow to head and coronary arteries is not achieved

Engineering Contradiction:
Improveblood flow supportVSAvoidcoaxial blood flow distribution
Core Design Contradiction:
Quantity of substanceVSEase of operation

Solution Approach 1:

The patent inverts the flow direction by using antegrade flow (flow in the direction of normal blood flow) rather than retrograde flow. The catheter is positioned in the aorta with the pump delivering blood in the antegrade direction, which provides coaxial blood flow to the head and coronary arteries. This inversion of flow direction improves ease of operation by naturally directing blood flow to critical areas without requiring complex catheter positioning or flow management.

Inventive Principle:
Principle #13The other way round (Inversion)

Data Source

PatentUS10307575B2Antegrade hemodynamic support
Publication Date: 2019.06.04 HENRY FORD HEALTH SYST
  • US10307575B2 patent drawing
  • US10307575B2 patent drawing
  • US10307575B2 patent drawing

AI summary

The procedure to place antegrade hemodynamic support (AHS) combine currently available procedures and devices in a unique fashion to solve a significant problem for patients who need large bore hemodynamic support. The AHS procedure involves delivering an AHS device or a catheter connected to an AHS device to a patient's aorta in an antegrade fashion, alleviating the workload on the patient's heart and supporting the patient hemodynamically to maintain normal functions of the body organs.