Polidocanol sclerotherapy of pharyngx for obstructive sleep apnea (OSA) and snoring subjects(SS)

Polysomnography (PSG) and 1% Polidocanol--submucosous sclerosis in the part of pharyngx with 1% polidocanol injection The duration : about 4~5 years Each patient with OSAS will be followed up 2 years after treatment. The injection administered is during the treatment, the injection should be in the retrophargngeal submucosa and lateral pharyngeal bands and lateral pharyngeal submucosa and in front submucosa of soft palate. The injection is multi-point, and each point injection is 0.3~0.5ml, the total quantity/each time is not more than 5ml; Every patient have to be treated about 1~2 times. -------The duration of the study is 4~5 years.the treatment is only during 1~3 months.The follow-up-2-year is carried on polysomnography and clinical study-observarion.