防音気圧装置の試作
1992 年 51 巻 Suppl-8 号 p. 113-118
詳細
1992 年 51 巻 Suppl-8 号 p. 113-118
Although the effect of the atmospheric pressure on Meniere's disease has been studied for over 15 years, and low pressure treatment seems to be effective, many questions are left unanswerd. The major reason is thought to be in the specifications of the pressure chamber.
Most pressure chambers hitherto used are capable of generating either high or low pressure. Furthermore, since the chambers are not designed for otological examinations in most cases, ventilating with fresh air produces noise exceeding 60-70 dB in the chamber during the examination. Aiming at neurootological research, we built a new soud-proof pressure chamber in which pressure can be changed between±1, 000mmH2O at a maximum speed of 100mmH2O/sec. Noise in this chamber can be kept under 30-35 dB while pressure is maintain-ed at the same level.
