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The enclosed helmet covered the entire head, with full protection for the face and somewhat deeper coverage for the sides and back of the head than that found on previous types of helmets. It was developed near the end of the 12th century and was largely superseded by the true great helm by c. 1240.
The forehead flap is known as the best donor site for repairing nasal defects because of its size, superior vascularity, skin color, texture and thickness. [1] [3] [4] Especially the color and texture of the forehead skin matches exactly with the skin of the nose. This is why the forehead flap is used so much for nasal reconstruction.
Bascinet with a bretache (nose protection) and aventail (chainmail neck protection). This illustration shows a bascinet with a type of detachable nasal (nose protector) called the bretache or bretèche made of sheet metal. [10] The bretache was attached to the aventail at the chin, and it fastened to a hook or clamp on the brow of the helmet. [10]
Samantha Cristoforetti demonstrating the use of the Valsalva device in the Sokol space suit. The Valsalva device is a device used in spacesuits, some full face diving masks, and diving helmets to allow astronauts and commercial divers to equalize the pressure in their ears by performing the Valsalva maneuver inside the suit without using their hands to block their nose.
11th century Moravian nasal helmet, Vienna. One of the few remaining examples of such helmets. The nasal helmet was a type of combat helmet characterised by the possession of a projecting bar covering the nose and thus protecting the centre of the face; it was of Western European origins and was used from the late 9th century to at least c. 1250.
Dufourmental flap: Cutaneous: Rotation/Transposition: Estlander flap: Cutaneous: Transposition: Labial commissure of mouth defects Fibular flap: Osteocutaneous: Free flap: Mandible reconstruction Gastrocnemius flap: Muscle: Interpolation: Open tibial fractures: Hatchett design flap: Cutaneous: Advancement: Forehead excisions/defects Inferior ...
A triangle of face tissue, including the nose and mouth, was taken from a brain-dead female donor and grafted onto the patient. [15] Scientists elsewhere had performed scalp and ear transplants, but the claim was the first for the transplant of a mouth and nose, the most difficult parts of the face to transplant. [ 16 ]
A diver in a pool wearing an AGA full face mask A diver wearing an Ocean Reef full face mask Head protection helmet for use with Ocean Reef full face diving mask. A full-face diving mask is a type of diving mask that seals the whole of the diver's face from the water and contains a mouthpiece, demand valve or constant flow gas supply that provides the diver with breathing gas. [1]