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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.
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.
Depending on style and how it is worn, only the eyes, mouth and nose, or just the front of the face are unprotected. Versions with enough of a full face opening may be rolled into a hat to cover the crown of the head or folded down as a collar around the neck. It is commonly used in alpine skiing and snowboarding.
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 It was developed near the end of the 12th century and was largely superseded by the true great helm by c. 1240.
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]
Isabelle Dinoire (3 February 1967 – 22 April 2016) was a French woman who was the first person to undergo a partial face transplant, after her pet dog severely injured her face while she was passed out from an overdose of sleeping pills in May 2005.
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]
Disassembled components of a single-window, low-volume dive mask Assembled diving half-mask showing the retaining strap. There are two basic categories of diving mask: The half mask covers the eyes and nose, and the full face mask covers eyes, nose and mouth, and therefore includes a part of the breathing apparatus.
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