Concentric Intraluminal Imaging and Implant Delivery Catheter
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Solution Overview
Problem
Current intraluminal imaging devices fail to provide real-time imaging of the vessel area during filter delivery procedures without interfering with the filter implantation and are not compatible with commercially available filters, often requiring multiple catheters and potentially causing filter misplacement.
Innovation Solution
A delivery device with a concentrically aligned implant and imaging element configuration, allowing for real-time imaging of the implant as it engages with the vessel wall without interfering, and compatible with standard filters, eliminating the need for multiple catheters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an imaging catheter is connected in parallel to a separate delivery catheter, then real-time imaging during filter deployment is achieved, but the device profile increases and filter deployment is interfered with
Solution Approach 1:
The imaging catheter is nested within the delivery catheter, with the imaging catheter passing through the center lumen of the delivery catheter. This concentric configuration allows both catheters to occupy the same spatial pathway, reducing the overall device profile while maintaining real-time imaging capability during filter deployment.
2Measurement precision
If an imaging catheter passes through the filter to image the vessel, then pre-implantation imaging is achieved, but filter misplacement occurs due to catheter movement
Solution Approach 1:
The imaging catheter is advanced through the delivery catheter and positioned within the vessel lumen before the filter is deployed. Real-time imaging is performed to identify the optimal implantation site and verify proper filter positioning. The imaging catheter remains stationary during imaging to prevent filter misplacement.
3Measurement precision
If fluoroscopy is used to determine implantation location, then positioning accuracy is achieved, but patient exposure to nephrotoxic contrast media and high cost occur
Solution Approach 1:
The imaging system replaces fluoroscopy with an intraluminal imaging catheter that uses ultrasound or optical coherence tomography to visualize the vessel lumen and filter position. This eliminates the need for ionizing radiation and nephrotoxic contrast media while providing real-time imaging guidance for filter implantation.
4Measurement precision
If a specially designed filter with a large opening is used to accommodate an imaging catheter, then imaging during implantation is achieved, but compatibility with commercially available filters is lost
Solution Approach 1:
The delivery catheter is designed with a center lumen that can accommodate various commercially available filter types, and the imaging catheter can be advanced through this center lumen to image any filter during deployment. This universal configuration allows the system to work with different filter designs without requiring specially modified filters.
Data Source
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AI summary
The invention generally relates to devices and methods that allow an operator to obtain real-time images of a luminal surface during an implant delivery procedure. In certain embodiments, a delivery device of the invention includes an elongate body and an inner member moveably disposed within the elongate body. The elongate body includes a first imaging element and defining a center lumen that leads to an opening. The elongate body is configured to releasably hold an implant within the center lumen and the first imaging element is configured to at least partially surround the center lumen such that the implant is deployable through the first imaging element. The inner member is configured to engage with and deploy the implant out of the opening of the elongate body and into a body lumen.