Head-mounted displays or helmet-mounted displays are augmented reality devices, which display images through small optic computer displays. These display devices are worn on the head like a helmet, with optic computer displays in front of one eye or separate optic computer displays for each eye. Head-mounted displays consist of an image source, collimating optics, and a mechanism to mount the device onto the head. These displays are being used in many applications such as medical visualization, in military vehicles for viewing sensor imagery, airborne workstations for aircraft simulation and training, and fixed and rotary wing avionics. Head-mounted displays can be used in virtual reality as well as augmented reality applications.

Minimally invasive surgeries/procedures are rapidly becoming one of the leading approaches used to treat various cardiovascular ailments, especially blood clots. Over the years, a majority of the minimally invasive cardiovascular surgeries have been increasingly using atherectomy and thrombectomy devices to increase the success rate of the surgeries and to reduce procedure and recovery time. Atherectomy devices are primarily used to debulk or clear blood vessels which have been occluded by fat accumulation (atherosclerosis plaque). Thrombectomy devices, on the other hand, are used to extract, excise, or disrupt blood clots. They use a variety of methods to safely remove emboli in any part of the body.