| CPC A61L 2/0047 (2013.01) [A61L 2/10 (2013.01); A61L 2202/11 (2013.01); A61L 2202/14 (2013.01); A61L 2202/16 (2013.01)] | 32 Claims |
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1. A personal, portable UV light sanitizer for safely sanitizing a skin surface target of a user by automatically preventing excessive unsafe radiation, comprising:
a sanitizer housing, being of a size carriable by a user to protectively enclose or mount functional elements of the sanitizer, said functional elements including,
a UV light source for safely radiating the skin surface target at which the UV light source may be directed, with sufficient intensity to kill or otherwise disable any pathogenic viruses or bacteria that may be on the skin surface target, depending on the duration and intensity of the radiation,
a portable electrical power source for providing electrical power to the UV light source,
a drive circuit for selectively connecting electrical power from the power source to the UV light source, and
risk reducing_means for automatically controlling the drive circuit to prevent excessive, unsafe UV light radiation of the user's skin, said risk reducing means including at least one of
risk reduction means for automatically disconnecting power from the UV light source a preselected maximum safe radiation cycle time period after initiation of a radiation cycle that will prevent excessive radiation of the user's skin,
risk reduction means to automatically terminate energization of the UV light source after lapse of a preselected maximum safe cycle time period,
risk reduction means for preventing, during a preselected radiation past accumulation time period, skin radiation time more than a preselected maximum total time of radiation or more than a preselected maximum number of radiation cycles,
risk reduction means for preventing energization if less than a preselected time period has passed since the end of an immediately prior successive radiation cycle,
risk reduction means for automatically terminating energization of the UV light source a preselected time after initiation of energization,
risk reduction for automatically deenergizing the UV light source if the distance from the light source to the target skin is less than a preselected minimum, and
risk reduction means for providing a signal to the user when distance between the UV light source and the skin surface target is less than a preselected minimum.
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