The Ocelot catheter is supported by the Lightbox console which allows physicians to see from inside an artery while the actual procedure takes place, using forward-looking OCT. The Ocelot has approximately a crossing profile of 2 mm, and an inner diameter of .41 mm which further consists of a working length of 110 cm. The product is said to be compatible with .014″ guide wire. Ocelot features intravascular imaging, a real-time coherence tomography, moreover, it also has a marker system and intravascular catheter orientation. Physicians can accurately navigate through CTOs by using Ocelot, all thanks to the addition of imaging what is ahead of the catheter. Ocelot is carefully designed to maximize the utility and help physicians treat patients with smaller arteries and this article will generally review this new technology for crossing CTOs while discussing the potential benefits of direct visualization while crossing occlusions.

As the time is progressing, peripheral arterial disease is becoming much more prevalent than before as the population ages. Furthermore, the severity of this disease seems to be progressing from simple narrowing of vessels to chronic total occlusions (CTOs). In the past, operators mainly used to rely solely on X-ray angiography and touch to guide catheters through complicated blockages but with the advancements in technology and science, the current method makes for imprecise vessel navigation, leading to long procedure times and possible complications, for instance, vessel perforation. The Crosser is particularly and notably mapped out to achieve intraluminal penetration across extended occlusions. This device has both a peripheral and coronary indication in the US. Let’s try to understand this system and how the process goes about- it comprises of an electronic Crosser generator, foot switch, a high-frequency transducer, the FlowMate injector) which is entirely optional) and Crosser catheter. It helps to create high-frequency vibrations propagated by a stainless steel tip which is there to facilitate penetration of hard or calcified lesions. From invasive bypass surgeries and amputations, patients often experience a decreased quality of life and higher health risks as the blockages become extremely severe which makes it difficult to penetrate with regular and traditional catheters.

After all this time the treatment of CTOs of the infra-inguinal peripheral arteries still remains a challenge even for experienced endovascular specialists. Plenty of crossing techniques has been described- ranging from the standard guidewire and catheter-based techniques which include subintimal recanalization to specialized CTO crossing devices. For a typical procedure comprising of an over-the-wire catheter, the guidewire is advanced to the site of the occlusion. Then the Crosser is passed over the guidewire until it happens to contact the occlusion. After that, the guidewire is withdrawn while the device is activated and ultimately advanced into the occlusion. The crossing of the lesion is confirmed by angiography, the Crosser device is removed when the guidewire is advanced into the distal lumen. Today the Ocelot catheter is one of the newest technologies, it aids in optical coherence tomography imaging on the very tip of a rotating crossing catheter in order to allow visual confirmation of luminal passage. These CRO crossing devices have huge potential to facilitate recanalization of some of the most challenging occlusions. As with all these evolving technologies, optimal techniques and clinical experiences are going to be important if the plan is to achieve the best results while shortening the learning curve.