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The Auryon™ Atherectomy System and Auryon Atherectomy Catheters with aspiration are indicated for use as atherectomy devices for arterial stenoses, including in-stent restenosis (ISR), and to aspirate thrombus adjacent to stenoses in native and stented infra-inquinal arteries. The Auryon ™ Atherectomy System and Auryon Atherectomy Catheters without aspiration are indicated for use in the treatment, including atherectomy, of infra-inquinal stenoses and occlusions.

The Auryon™ Atherectomy System consists of two sub-units: 1) a single use catheter ("Auryon catheter"); and 2) a laser console. The Auryon catheter is a single use catheter that is made of an array of optic fibers surrounded by a circumferential blunt blade at its distal tip. The Auryon™ catheter is connected to the laser system via its connector and transmits energy at pre-set fluence levels of 50 and 60 mJ/mm2 to the occluded or narrowed artery. The laser delivers very short high intensity pulses which travel from the laser, through the fibers, and emerge from the polished ends of the individual fibers. As the UV light emerges from the fiber end, it will be absorbed by the fluid, and create a cavitation bubble within the fluid. The collapse of this bubble results in a photoacoustic shockwave that disintegrates rigid materials such as calcified lesions without relying on thermal degradation to break down the stenotic material. The Auryon™ Atherectomy System must work over a commercially available guide wire that crosses the lesion intra-luminally. The catheters are available in seven configurations (0.9mm, 0.9mm, 1.5mm, 1.5mm XL, 1.7mm, 2.0mm and 2.35mm), with and without hydrophilic coating. For the small size catheters (i.e., 0.9mm.1.5mm, and 1.7mm), there is a designated lumen tube for a guidewire at the center of the inner blunt blade. The 0.9mm, 1.5mm, and 1.7mm catheters do not have an aspiration feature and have not been tested in ISR lesions. The larger Auryon catheters (i.e., 2.0mm and 2.35mm) have an eccentric guidewire lumen and include additional features consisting of an aspiration feature (both catheters) and an "off-center" feature 2.35mm only. The aspiration feature is intended for debris and thrombus collection and removal from the vessel during the atherectomy procedure. These devices are also indicated for treatment of In-Stent Restenosis (ISR) lesions. The "off-center" feature is included in the 2.35 mm catheter only and is designed to facilitate debulking of lesions in blood vessels beyond the catheter's diameter.

The Auryon™ Atherectomy System and Auryon Atherectomy Catheters with aspiration are indicated for use as atherectomy devices for arterial stenoses, including in-stent restenosis (ISR), and to aspirate thrombus adjacent to stenoses in native and stented infra-inguinal arteries. The Auryon™ Atherectomy System and Auryon Atherectomy Catheters without aspiration are indicated for use in the treatment, including atherectomy, of infra-inguinal stenoses and occlusions.

The Auryon™ Atherectomy System consists of two sub-units: 1) a single use catheter ("Auryon catheter"); and 2) a laser console. The Auryon catheter is a single use catheter that is made of an array of optic fibers surrounded by a circumferential blunt blade at its distal tip. The Auryon™ catheter is connected to the laser system via its connector and transmits energy at pre-set fluence levels of 50 and 60 ml/mm² to the occluded or narrowed artery. The Auryon™ Atherectomy System must work over a commercially available 0.014" guide wire that crosses the lesion intra-luminally. The catheters are available in six configurations (0.9mm, 0.9mm XL, 1.5mm, 1.5mm XL, 2.0mm and 2.35mm), with and without hydrophilic coating. For the small size catheters (i.e., 0.9mm and 1.5mm), there is a designated lumen tube for a guidewire at the center of the inner blunt blade. The 0.9mm and 1.5mm catheters do not have an aspiration feature and have not been tested in ISR lesions. The larger Auryon catheters (i.e., 2.0mm and 2.35mm) have an eccentric guidewire lumen, and include additional features consisting of an aspiration feature (both catheters) and an "off-center" feature 2.35mm only). The aspiration feature is intended for debris and thrombus collection and removal from the vessel during the atherectomy procedure. These devices are also indicated for treatment of In-Stent Restenosis (ISR) lesions. The "off-center" feature is included in the 2.35 mm catheter only and is designed to facilitate debulking of lesions in blood vessels beyond the catheter's diameter. The modification associated with this submission is to add a second catheter length (225cm) for the size 0.9 and 1.5 mm catheter sizes. The ID of the 0.9mm catheter is also increased slightly. There are no changes to the Auryon Laser Console unit associated with this submission.