Tyne Docking Assembly for Stable Coronary Access Through Prosthetic Valves
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Solution Overview
Problem
Percutaneous coronary interventions are hindered by the presence of a prosthetic heart valve, which can obstruct access to heart locations such as the coronary ostium, making it difficult to deliver treatment devices like stents or angioplasty devices.
Innovation Solution
A delivery device with a tubular outer jacket and a tyne assembly, including a shaft supporting a tyne, is used to engage and dock with the implanted prosthetic heart valve, allowing precise positioning and delivery of treatment devices through the use of a tyne that extends from the outer jacket to secure the device in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If percutaneous techniques are used to deliver prosthetic heart valves, then patient trauma and procedural risks are reduced, but access to coronary locations becomes difficult due to valve obstruction
Solution Approach 1:
The delivery device is segmented into multiple functional components: an outer catheter for navigation, an inner catheter for treatment device delivery, and a tyne assembly for anchoring. This segmentation allows each component to perform its specific function independently, enabling the device to navigate through the prosthetic valve while maintaining access to coronary locations.
Solution Approach 2:
The tyne assembly acts as an intermediary mechanism that bridges the delivery device and the prosthetic valve frame. By engaging with the valve frame, the tyne provides a stable attachment point that facilitates access to coronary locations without requiring direct manipulation through the valve obstruction.
2Ease of operation
If a delivery device is advanced through the vasculature to the heart, then percutaneous access is achieved, but maintaining precise positioning during intervention becomes difficult
Solution Approach 1:
The tyne assembly is deployed in advance to engage with the prosthetic valve frame before treatment device delivery. This preliminary anchoring action establishes a stable reference point that maintains positioning accuracy throughout the subsequent intervention procedures.
Solution Approach 2:
The delivery device incorporates radiopaque markers and imaging capabilities that provide real-time feedback on device position relative to the prosthetic valve and coronary locations. This feedback mechanism allows operators to maintain precise positioning by adjusting the device based on visual confirmation.
3Stability of the object's composition
If the tyne assembly is deployed to engage the prosthetic valve frame, then positioning stability is improved, but device complexity increases
Solution Approach 1:
The tyne assembly is nested within the inner catheter in a compressed state during delivery. Upon deployment, the tyne extends outward to engage the prosthetic valve frame. This nested configuration allows the complex anchoring mechanism to be delivered through a simple catheter structure without increasing overall device complexity.
Data Source
Figure 1~2A
Figure 2B~2C
Figure 2D~2G
AI summary
Aspects of the present disclosure provide a delivery device including a tubular outer jacket having a distal end and a tyne assembly including a shaft supporting at least one tyne. In some aspects, an inner jacket is positioned within the outer jacket, wherein the tyne assembly is positioned between the outer jacket and the inner jacket. The delivery device has a delivery configuration in which the tynes are maintained within the outer jacket and a deployed configuration in which the tynes extend from a distal end of the tubular outer jacket. Aspects of the disclosure also provide methods of conducting a percutaneous coronary intervention including utilizing one or more tyne assemblies to engage the tynes of each tyne assembly with the frame to maintain the position of the delivery device.