A trephine is a surgical instrument with a cylindrical blade. It can be of one of several dimensions and designs depending on what it is meant to be used for. They may be specially designed for obtaining a cylindrically shaped core of bone that can be used for tests and bone studies, cutting holes in bones (e.g., the skull) or for cutting out a round piece of the cornea for eye surgery. WebAug 1, 2010 · Paranasal sinus anatomy and trephination technique (Proceedings) The equine paranasal sinuses (PNS) are an intricate area of the head. There are 6 paired sinuses (frontal, maxillary, dorsal conchal, ventral conchal, middle conchal, and sphenopalatine) and all of these spaces communicate with each other and the nasal passage either directly or ...

Trephine - Wikipedia

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WebSep 5, 2024 · The collection of surgical instrument kits, particularly those for trepanation, is pretty rich in Europe during the eighteenth century. It included brace-like handles and crown drillers. It was also pretty wide in the United States during the second half of the nineteenth century, with T-handles and trephine-like drillers. WebTrephination, also known as trepanning, trepanation or burr holing, is one of the oldest surgical procedures known to humanity and refers to a surgical procedure in which a circular piece of bone is drilled and excised, most commonly from the human skull. While the term trephination typically refers to the creation of a hole in the skull, there ... WebJoint Replacement Orthopaedic Devices Hip Knee Shoulder marvel ultimate spider-man web warriors