Oropharyngeal airways are metal, plastic or elastometric instrument. It is a medical device called an airway adjunct used to maintain a patent airway. It helps to maintain the patency of the airway in an unconscious patient who is breathing spontaneously. They prevent the tongue from falling back by fitting snugly in the oral cavity.

Ortho splints walker is a walking brace that provides full-shell protection with pneumatic support. It has a low rocker sole bottom for added comfort and ease of ambulation, and a wider foot base with plenty of room for dressings without sacrificing comfo

Orthodontic pliers consist of first and second arms that are pivotally interconnected utilizing an appropriate mechanical fastener. A spring is generally disposed about the mechanical fastener to bias the pliers toward an open condition. A bearing is generally located between the first and second arms to hinder friction between the first and second arms, facilitate movement of the pliers between open and closed conditions.

Orthokeratology Lenses are made of highly oxygen-permeable materials, permitting the wearing of orthokeratology lenses on an overnight basis. Orthokeratology lenses are an example of an alternate lens design for a specialized use that required clinical data to evaluate the safety and efficacy. Orthokeratology lenses are made of highly breathable materials and new designs that promote corneal change. Orthokeratology lenses are specially designed to reshape the cornea during sleep, providing lens-free daytime wear.