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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Electrothermal bipolar vessel sealing ： ウィキペディア英語版 Electrothermal bipolar vessel sealing Electrothermal Bipolar Vessel Sealing (EBVS) is an electrosurgery technology for sealing blood vessels of up to 7mm in diameter. The technology was introduced in 1998 and since then has been used widely for a variety of laparoscopic and open surgical procedures. In addition to sealing blood vessels, modern instruments are designed to grasp and cut a variety of tissues. A number of companies offer EBVS systems including (BOWA ), Covidien, Conmed, Ethicon Endo-Surgery, (Erbe Medical ) and Olympus. ==Principle of function== A typical Electrothermal Bipolar Vessel Sealing system consists of an electric current generator and an instrument for grasping blood vessels. During surgery, a surgeon first grasps a blood vessel to be sealed with the instrument that is usually designed as a clamp. A surgeon then initiates a sealing cycle controlled by the generator. The generator produces an electric current across the blood vessel wall. Electromagnetic wave surrounding the current energizes the electrons within the blood vessel. These electrons release their energy as heat. As the blood vessel is heated, the collagen and elastin found in the blood vessel wall denature. The generator precisely controls the amount of energy delivered to the tissue through a computer algorithm that varies depending on the manufacturer. The majority of the generator systems monitor the impedance in the circuit and as it begins to rise automatically break the current. This prevents charring and burning of the vessel wall. The sealing cycle is complete with a period of cool-down during which the elastin and collagen form a seal. Some of the EBVS instruments are also able to cut the formed seal either with a blade incorporated into jaws of the instrument or with an harmonic scalpel technology. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Electrothermal bipolar vessel sealing」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.