Occlusion Crossing Device With Rotating OCT Sensor
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Solution Overview
Problem
Existing occlusion-crossing devices are ill-equipped for use with imaging, making guidewire placement cumbersome, and are often too large for small-diameter peripheral arteries or coronary arteries, with difficulty passing through occlusions without damaging the artery.
Innovation Solution
The development of occlusion crossing apparatuses with a rotating distal tip featuring a directional cutting element and an OCT imaging sensor, allowing for precise imaging and navigation through occlusions while preventing deflection into the vessel wall.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If existing occlusion-crossing devices are used, then guidewire placement can be performed, but the process becomes cumbersome and difficult due to lack of imaging capabilities
Solution Approach 1:
The patent combines guidewire placement functionality with OCT imaging capabilities into a single integrated device. The imaging sensor is incorporated into the distal tip of the catheter, allowing simultaneous visualization and guidewire advancement through the occlusion, eliminating the need for separate imaging procedures and making the overall process more efficient and less cumbersome
2Adaptability or versatility
If existing occlusion-crossing devices are used, then they can treat peripheral arteries, but they are too large for small-diameter peripheral arteries or coronary arteries
Solution Approach 1:
The patent employs advanced OCT imaging technology that operates at wavelengths optimized for deep tissue penetration with minimal scattering, allowing for high-resolution imaging in small vessels. The device architecture is designed with a compact distal tip that can navigate small-diameter arteries while maintaining full imaging functionality, enabling adaptation to various artery sizes including coronary arteries
3Reliability
If existing occlusion-crossing devices are used, then they can pass through occlusions, but they risk damaging the artery due to difficulty in navigation
Solution Approach 1:
The patent implements real-time OCT imaging feedback during the occlusion crossing procedure. The imaging sensor continuously provides visual information about the vessel walls and occlusion characteristics ahead of the device tip, allowing the operator to adjust the advancement path and apply forces in a controlled manner. This feedback mechanism enables safe navigation through complex occlusions while minimizing the risk of vessel wall damage or perforation
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
Enables safe and precise crossing of occlusions with improved imaging capabilities, reducing the risk of artery damage and facilitating effective treatment of peripheral and coronary artery diseases.
Implementation Method 1
an OCT imaging sensor, allowing for precise imaging and navigation through occlusions
Data Source
AI summary
Occlusion crossing devices. An outer shaft can include a distal opening that is angled relative to a central axis of the outer shaft to form a tapered distal end. An inner shaft can be configured to translate within the outer shaft and to rotate with respect to the outer shaft. The inner shaft can include a distal end having cutting edges. The inner shaft can include an imaging window on a lateral side of the inner shaft proximal to the cutting edges. When at last a portion of the cutting edges are fully extended distally through the distal opening of the outer shaft, the tapered distal end of the outer shaft can be arranged to occlude the imaging window at a defined rotational position as the inner shaft is rotated relative to the outer shaft to provide a registration mark for imaging.