1988 年 39 巻 1 号 p. 67-70
Since the cuff-botton like canula for tracheal stoma was reported by Hashimoto et al. in 1980, we have experienced additional 25 cases. The canula was not kept in 5 cases because of various disturbances. Some improvements have been added to the canula since the first report. In the present paper, we report an evaluation and suggestion for the proper usage of the canula.