Heart Valve Delivery Shafts With Locking for Precise Anchoring
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Solution Overview
Problem
Existing prosthetic heart valve delivery systems face challenges in accurately positioning and anchoring prosthetic valves within the native heart valve, leading to potential paravalvular leakage and inefficiencies in implantation procedures.
Innovation Solution
A delivery apparatus with independently actuated shafts and a locking mechanism allows for precise positioning and anchoring of prosthetic heart valves using a docking device, enabling better alignment with the native valve anatomy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a traditional delivery apparatus with coupled shafts is used to deliver prosthetic heart valves, then the device structure is simpler, but the positioning precision and alignment with native valve anatomy deteriorate
Solution Approach 1:
The delivery apparatus is divided into multiple independently actuated shafts (first shaft, second shaft, third shaft) that can be controlled separately. This segmentation allows each shaft to be positioned and oriented independently, enabling precise positioning and alignment of the prosthetic heart valve with the native valve anatomy, while maintaining a modular structure that balances complexity with functionality.
2Reliability
If a delivery apparatus without a locking mechanism is used, then the device operation is simpler, but the anchoring stability and positioning reliability deteriorate
Solution Approach 1:
The locking mechanism is designed to automatically engage and secure the shafts in their desired positions without requiring additional external locking devices or complex control systems. The mechanism uses the inherent mechanical properties of the shafts and locking components to maintain anchoring stability, ensuring reliable positioning while keeping the overall device operation straightforward.
3Manufacturing precision
If independently actuated shafts are implemented, then the alignment with native valve anatomy improves, but the ease of operation deteriorates
Solution Approach 1:
Each shaft is equipped with its own actuation mechanism, allowing the operator to control the position and orientation of each shaft independently. This segmented control approach enables precise alignment with the native valve anatomy by adjusting each shaft separately, while the modular design keeps the control interface intuitive and manageable.
Solution Approach 2:
The handle assembly serves as an intermediary between the operator and the multiple shafts, providing a unified control interface that simplifies the operation of independently actuated shafts. The handle integrates the control mechanisms for all shafts, allowing the operator to manage the complex alignment process through a coordinated system of controls rather than separate manual adjustments.
Data Source
AI summary
Devices and methods for delivery devices for docking devices are disclosed. As an example, a delivery apparatus can include a housing, a linear actuator coupled to the housing, the linear actuator comprising a traveler and an articulation member coupled to the traveler, wherein the traveler translates axially relative to the housing based on rotation of the articulation member relative to the housing, a first shaft extending through the housing and configured to translate axially relative to the housing, a second shaft extending through the first shaft and coupled to the traveler of the linear actuator such that the second shaft and the traveler translate axially together, and a locking mechanism coupled to the housing, wherein the first shaft is prevented from moving relative to the housing in a locked configuration, and wherein the first shaft is moveable relative to the housing in an unlocked configuration.