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I.はじめに
1928年,CushingとBovieによる針状,ループ状,あるいは棍棒状の単極電気メス1)の発見は脳神経外科手術を飛躍的に進歩させた.1940年,双極電気メス4),続いてレーザー7,8,11),および超音波破砕吸引器(CUSA)2,3)が開発され,それぞれの有用性が報告されている.われわれは脳神経外科手術用に高圧水流を応用したAS & A(Aqua-stream & Aspirator)5)を開発し,優れた手術成績を得たので,その装置を紹介し,臨床治験を報告する.
A new instrument, the aqua-stream and aspirator (AS & A) is useful and safe for microscopical neurosurgery.
The apparatus is simple and small. The handpiece is small and light as well as being easy to manipulate. Sterilization is easy and safe. Both streaming and aspirating tubes of AS & A are thin, so that operative field is not obstructed by the operative microscope. The operative field is kept dry and clean by means of washing the work of AS & A. It is economical, because less gas and saline solution than usual are needed during the usual craniotomy (a one liter soft bottle).
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