3 results about "Complete occlusion" patented technology

This invention relates to the field of medical device technology, and in particular to a shockwave guidewire system, comprising a guidewire, an axial vibration generating device, and a shockwave generating device. The axial vibration generating device is driven and connected to the guidewire to induce axial vibration in the guidewire. The guidewire includes a first end, a second end, and a guidewire body connecting the two. The first end is used to enter the lesion tissue, and its outer diameter decreases continuously along the length of the guidewire away from the guidewire body. The second end is driven and connected to the axial vibration generating device. The shockwave generating device is disposed on the guidewire body and is capable of generating shock waves that propagate circumferentially along the guidewire. This invention's shockwave guidewire system organically integrates the axial vibration generating device, the shockwave generating device, and the guidewire into a single device. This allows for the establishment of an intraluminal channel for the complete occlusion of lesions using a single instrument, significantly reducing surgical time and the burden on both the patient and the surgeon.

A reentry catheter for crossing a vascular occlusion includes an elongate flexible tubular body, having a proximal end, a distal end and at least one lumen extending there through. A reentry zone on the tubular body includes at least two and preferably three sets of opposing pairs of axially spaced exit apertures in communication with the lumen. The apertures are rotationally offset from each other and aligned in a spiral pattern around the tubular body. A method of crossing a chronic total occlusion includes the steps of advancing the reentry catheter across the occlusion via a channel formed in the subintimal space, and advancing a guidewire via a selected exit port into the native lumen distally of the occlusion. The catheter may be removed, leaving the guidewire across the occlusion to guide further interventional devices.