![]() Under the microscope, you could see the obsidian scalpel had divided individual cells in half, and next to it, the steel scalpel incision looked like it had been made by a chainsaw. There are several anecdotal clinical articles claiming wound healing and scar superiority using obsidian (volcanic glass) scalpels. In order to determine if skin incisions made with obsidian were superior to those made with standard surgical steel, wound tensile strength, scar width, and histology were assessed in 40 adult male Sprague-Dawley rats. Obsidian scalpel under microscope skin#Įach rat received two parallel 8-cm dorsal skin incisions, one with an obsidian scalpel and the other with a surgical steel scalpel (no. ![]() TIL Obsidian blades are so sharp (3 nm thickness) that, on a cellular level, obsidian knives will cut between cells rather than tear the cells as steel knives would do. Tensile strength of the two wound types was not different at 7, 14, 21, and 42 days. Scar width, however, was significantly less in the obsidian wounds at 7, 10, and 14 days ( p < 0.005). Though obsidian has been tested as a knife for surgical scalpel needs, the stone hasn’t been licensed to be used on humans because glass fragments could be. At 21 days, scar width was not different in the two groups. This obsidian glass sample comes from a small quarry in County Antrim, Northern Ireland. It might not look like that, but under a microscope, you would see it. It is part of the Tardee volcanic complex, which in turn is part of the North Atlantic volcanic province that erupted in the Paleogene. This locality is one of the few examples of such acidic volcanic rocks in the Paleogene rocks of. Obsidian is a naturally occurring volcanic glass formed when lava extruded from a volcano. However, when viewing an obsidian blade under an electron microscope, you won’t see anything but evenness and. It is commonly found within the margins of rhyolitic lava flows known as. Obsidian is a type of volcanic glass that produces a much finer blade than conventional steel. Obsidian is used by some surgeons for scalpel blades, although this is not approved by the US Food and Drug Administration (FDA) for use on humans. Obsidian has been used as a cutting tool since the Stone Age, but modern versions of obsidian scalpels are manufactured by a Virginia archaeologist using a pressure flaking process. At 42 days, all wounds were barely detectable, thus precluding scar width analysis. The black volcanic glass is up to 100 times sharper and much smoother than stainless steel scalpels. It is ideal for applications where an extremely fine cutting. Well-crafted obsidian blades, like any glass knife, can have a cutting edge many times sharper than high-quality steel surgical scalpels: the cutting edge of the blade is only about 3 nanometers thick. Obsidian scalpel under microscope skin#.
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