Dual-lumen ultrasonic catheters, systems, and methods

Abstract

Provided herein are dual-lumen catheters, systems, and methods thereof. In some embodiments, for example, a catheter assembly configured for modifying intravascular lesions is provided including a core wire, a dual-lumen extrusion including the core wire, and a manifold disposed around a portion of the dual-lumen extrusion. The core wire includes a proximal end configured to vibrationally couple to an ultrasound transducer. The dual-lumen extrusion includes a first lumen and a second lumen. The core wire is disposed within the first lumen, and the second lumen is configured to accommodate a guidewire. The manifold is disposed around at least a skived proximal-end portion of the dual-lumen extrusion, wherein the skived portion includes the second lumen without the first lumen. In some embodiments, the catheter assembly further includes the ultrasound transducer. In some embodiments, a system console includes the ultrasound transducer.

Description

Background technique [0001] Atherosclerosis is characterized by one or more intravascular lesions that form as part of a plaque that includes blood-borne substances such as fat, cholesterol, and calcium. Intravascular lesions, such as arterial lesions, can form on the wall of the lumen of an artery and extend across the lumen to its opposite wall. The final open point usually occurs at the boundary between the arterial lesion and the opposing wall of the arterial lumen. Surgical treatments for atherosclerosis, such as angioplasty or atherectomy, can be used to restore patency and blood flow lost due to one or more intravascular lesions. [0002] Surgical treatment of atherosclerosis may include advancing one or more endoluminal devices to the endovascular lesion in order to repair the endovascular lesion. For example, angioplasty or atherectomy can include advancing a total exchange ("OTW") endoluminal device over a guide wire in the guide wire lumen of the endoluminal devic...

AI Technical Summary

Problems solved by technology

However, advancing an OTW endoluminal device to an endovascular lesion can lead to procedural problems arising from device complexity, especially in OTW endoluminal devices with poorly designed or fabricated endovascular tube designs

For example, a separately extruded guidewire tube containing the guidewire lumen that is not adequately stapled to the inner wall of the sheath of an OTW endoluminal device may result in device complications such as a portion of the guidewire tube that is able to move independently of the sheath reverse

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