(a) Identification.
         A liquid crystal vein locator is a device used to indicate the location of a vein by revealing variations in the surface temperature of the skin by displaying the color changes of heat sensitive liquid crystals (cholesteric esters).
     
    
        
        (b) Classification.
         Class I (general controls). The device is exempt from the premarket notification procedures in  subpart E of  part 807 of this chapter, subject to the limitations in  § 880.9.
     
    
        
            Code of Federal Regulations
        
        [45 FR 69682-69737, Oct. 21, 1980, as amended at 54 FR 25050, June 12, 1989; 66 FR 38807, July 25, 2001]