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The XO Constrain Percutaneous Transluminal Angioplasty Constraining Catheter is intended to be used in conjunction with a PTA balloon to facilitate dilation and apposition of the scoring/constraining surface to the stenal in the iliac, femoral, ilio-popliteal, infra-popliteal, and renal arteries, and for treatment of obstructive or synthetic arteriovenous dialysis fistulae. Not for use in the coronary or neuro-vasculature.

The XO Constrain Percutaneous Transluminal Angioplasty Constraining Catheter is a balloon dilation scoring/constraining catheter. It consists of a metal alloy wire shaft connected to the metal alloy expandable constraining structure (CS) at the distal atraumatic tapered tip. It works with offthe-shelf compliant and semi-compliant balloons to expand the constraining structure and is designed to facilitate uniform, atraumatic balloon expansion, vessel scoring, and rewrap within small or distal vessels and arteries. The XO Constrain catheter is designed to be used with balloons between the sizes of 6 - 20mm in length and 1.5 - 4.0mm in diameter and may work with PTA and peripheral use PTCA balloon catheters with a standard over-the-wire (OTW) or rapid exchange (RX) procedural approaches. The expansion of the CS is determined by the balloon inflation diameter. Upon deflation the CS returns to its original shape and is removed from the vessel along with the balloon catheter. The XO Constrain should not be used in the coronary or neuro-vasculature.

The XO Cath Microcatheter is intended for peripheral vascular use. The microcatheter can be used for controlled and selective infusion of diagnostic, embolic or therapeutic materials into the vessel.

The subject XO Cath Microcatheter is a single-lumen, metal alloy shaft with micro-cuts for flexibility, designed to support a guidewire during access of the peripheral vasculature, and to provide a conduit for the delivery of embolic applications. The XO Cath Microcatheter is available in two lumen sizes, 2.0Fr and 2.6Fr. The XO Cath 2.0Fr and 2.6Fr Microcatheters are available with a straight or bern tip shape to aid with accessing challenging anatomy. The distal outer surface of the microcatheter is coated with a hydrophilic coating. Radiopaque markers are located at the distal tip to facilitate fluoroscopic visualization. The proximal end incorporates a standard luer for ease of use and to connect with a syringe.

The XO Score LP Percutaneous Transluminal Angioplasty Scoring Catheter is intended to be used in conjunction with a PTA balloon to facilitate dilation and apposition of the scoring surface to the stenotic material in the iliac, femoral, iliofemoral, popliteal, infra-popliteal, and renal arteries, and for treatment of obstructive lessions of native or synthetic arteriovenous dialysis fistulae. Not for use in the coronary or neuro-vasculature.

The XO Score LP (Low Profile) Percutaneous Transluminal Angioplasty Scoring Catheter is a 2.2 Fr (0.76 mm) and 3.8 Fr (1.27 mm) diameter, single-lumen, metal alloy shaft, a proximal polymer outer jacket and a balloon expandable scoring element at the distal tip. Designed to work with a standard PTA balloon catheter. The XO Score LP catheter essentially adds the lesion scoring / cutting capability to a standard PTA balloon catheter with the scoring element at its distal end. It is available in the one catheter length (150 cm), and longitudinal scoring element length (23cm).

The XO Cross Coronary is a support catheter intended to guide and support a guidewire during access of the peripheral or coronary vasculature, allow for wire exchanges and provide a conduit for the delivery of saline solutions or diagnostic contrast agents.

The XO Cross Coronary Support Catheter is a single-lumen support catheter designed to support a guidewire during access of the peripheral or coronary vasculature, allowing for exchange of guidewires during vascular access procedures, and providing a conduit for the delivery of saline solutions or diagnostic contrast agents. The shaft and tip are both radiopaque to track the location of the XO Cross Coronary Support Catheter within the vasculature, while under fluoroscopy. The distal end of the subject catheter is also coated with a hydrophilic coating to reduce surface friction. It is available in various lengths (90cm, 135cm, 175cm), with a diameter of 2 Fr (0.7 mm) and with a tapered polymer tip at its distal end.

The XO Cross is a support catheter intended to guidewire during access of the peripheral vasculature, allow for wire exchanges and provide a conduit for the delivery of saline solutions or diagnostic contrast agents.

The XO Cross Support Catheter is identical to the predicate device in that it is a single-lumen support catheter designed to support a guidewire during access of the peripheral vasculature, allowing for exchange of guidewires during vascular access procedures, and providing a conduit for the delivery of saline solutions or diagnostic contrast agents. The shaft and tip are both radiopaque to track the location of the XO Cross Support Catheter within the vasculature, while under fluoroscopy. The distal end of the subject catheter is also coated with a hydrophilic coating to reduce surface friction. It is available in various lengths (90cm, 135cm, 15cm) and ranges in diameter from 2 Fr (0.7 mm) to 4 Fr (1.35 mm) with a tapered polymer tip at its distal end.