Transcatheter Valve Docking Assembly for Replaceable Ventricular Support
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Solution Overview
Problem
Existing transcatheter valve implant systems lack a reliable and replaceable ventricular assist device that can be securely anchored and connected to a docking station within the heart, necessitating improved anchoring and connection mechanisms for efficient deployment and replacement.
Innovation Solution
A ventricular assist device is designed with a subannular ring and stent frame structure that allows for releasable connection to a docking station, utilizing prongs, grooves, and tabs/ridges for secure anchoring and connection, and is powered by a subcutaneous power supply for efficient deployment and replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a ventricular assist device is integrated with a transcatheter valve implant system, then the reliability of ventricular support is improved, but the device complexity increases
Solution Approach 1:
The patent combines the ventricular assist device with the transcatheter valve implant system by integrating a docking station into the valve assembly. The docking station includes mounting interlocks that engage with the stent frame, creating a unified implantable system that provides both valve replacement and ventricular support functions through a single integrated device rather than separate implants
Solution Approach 2:
The integrated system serves multiple functions: the transcatheter valve component provides valve replacement, while the ventricular assist device component provides hemodynamic support. The docking station acts as a universal interface that coordinates both functions, allowing the system to adapt to different clinical needs and patient conditions
2Ease of repair
If a releasable connection mechanism is used between the ventricular assist device and docking station, then the ease of repair and replacement is improved, but the device complexity increases
Solution Approach 1:
The system is divided into separable components: the ventricular assist device can be detached from the docking station, which remains anchored to the stent frame. The mounting interlocks are designed to allow controlled separation, enabling the ventricular assist device to be replaced independently while preserving the permanently implanted docking station and valve components
Solution Approach 2:
The connection mechanism transitions from a static permanent attachment to a dynamic releasable connection. The mounting interlocks can engage to secure the ventricular assist device during normal operation and disengage when replacement is needed, allowing the system to adapt its connection state based on clinical requirements
3Stability of the object's composition
If mounting interlocks with prongs, grooves, and tabs are used to secure the ventricular assist device, then the stability of the connection is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The mounting interlocks use asymmetric geometries with prongs, grooves, and tabs designed with specific directional orientations. The prongs on the docking station engage with complementary grooves on the ventricular assist device, creating a secure fit that prevents disengagement while accommodating manufacturing tolerances through the asymmetric design
Data Source
AI summary
A transcatheter valve implant assembly has a ventricular assist device, a prosthetic valve, a stent frame structure, and a docking station, and is implanted at an aortic or a pulmonary valve. During implantation, the native valve leaflets of the respective valve at the implantation site are engaged with the prosthetic valve and/or the stent frame structure while the stent frame structure is connected to the docking station with the prosthetic valve adjacent to the proximal end of the stent frame structure. The ventricular assist device is inserted into the interior the stent frame structure with an inlet of ventricular assist device positioned in the respective ventricle associated with the implantation site and the outlet of the ventricular assist device positioned to discharge into the respective blood vessel associated with the implantation site. The ventricular assist device is releasably connected with the stent frame structure and the docking station.