Ventricular Cuff Explant Plug With Retention Clip Blood Sealing
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Solution Overview
Problem
Current methods for discontinuing ventricular assist device (VAD) support, such as turning off the device or performing ventricular patch plasty, are cumbersome and may not be necessary for all patients who recover sufficiently, and existing explantation methods do not efficiently block blood flow from the ventricle.
Innovation Solution
The development of explant plug devices that are mountable to a ventricular cuff to block blood flow, utilizing various retention and seal mechanisms to securely attach to the ventricular cuff, reducing the need for ventricular patch plasty and occupying less space than the VAD.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ventricular patch plasty is performed during VAD explantation, then blood flow is blocked, but the procedure becomes more invasive and complex
Solution Approach 1:
The invention extracts the blood flow blocking function from the complex ventricular patch plasty procedure and implements it through a separate, simpler explant plug device that can be independently inserted into the ventricular cuff without requiring extensive surgical reconstruction
Solution Approach 2:
The explant plug device acts as an intermediary element between the VAD explantation and the blood flow channel, providing a mechanical barrier to block blood flow without requiring direct modification of the ventricular wall through patch plasty
2Ease of operation
If traditional VAD explantation methods are used, then device removal is achieved, but blood flow blocking is insufficient or requires additional procedures
Solution Approach 1:
The invention merges the VAD removal function with the blood flow blocking function into a single integrated explant plug device that simultaneously achieves device extraction and blood flow prevention, eliminating the need for separate procedures
3Reliability
If ventricular patch plasty is performed, then blood flow is blocked, but patient recovery time and surgical trauma increase
Solution Approach 1:
The invention segments the blood flow blocking function from the VAD removal process, allowing the explant plug to be inserted as a separate, minimally invasive procedure that does not require the extensive tissue manipulation and healing time associated with ventricular patch plasty
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
The explant plug devices effectively block blood flow without the need for invasive procedures like ventricular patch plasty, providing a more efficient and less invasive method for VAD explantation, with adjustable and detachable seal configurations to accommodate patient recovery and potential reimplantation.
Implementation Method 1
The retention assembly includes one or more retention members and a spring assembly coupled with the one or more retention members. The spring assembly in the retention configuration is configured to hold each of the one or more retention members in engagement with an inner surface of the ventricular cuff
Data Source
AI summary
Explant plug devices for attachment to a ventricular cuff during explantation of a ventricular assist device. An explant plug device includes a blood flow blocking component and a retention clip. The blood flow blocking component is configured to be mounted to the ventricular cuff to block flow of blood out of the ventricle via the ventricular cuff. The retention clip is coupled with the blood flow blocking component. The retention clip is repositionable relative to the blood flow blocking component from a retracted position that accommodates mounting of the blood flow blocking component to the ventricular cuff and a retention position that retains the blood flow blocking component to the ventricular cuff.