Cytotoxicity Test of Cervical Collar in Aids / 中国康复理论与实践

ABSTRACT

Objective To study the cytotoxicity of cervical collar in rehabilitation technical aids and to investigate the cytotoxicity of domestic marketed products. Methods According to the experimental principle of GB/T 16886.5-2003 and GB/T 16175-2008,microscopic observa-tion and Thiazole Blue Colorimetric methods were used to observe the toxicity of extract from four different cer-vical collars on the cells(L929). Results When the concentration of the extract was 0.1 g/ml,the cytotoxicity was grade three and grade two in the cervi-cal collars D and A,respectively;and it was grade one both in cervical collars B and C.When the concentration of the extract was 0.2 g/ml,the cytotoxicity was grade four in cervical collars A and D,and was grade two in cer-vical collars B and C. Conclusion The cervical collars varied in the cytotoxicity,especially in cervical collars A and D.