An Ultrasonic Cleaner for Hypodermic Needles and Similar Small Bore Apparatus

The authors investiagte ultrasonic leaning, with emphasis on its application to cleaning small parts. The ultrasonic equipment used at present for cleaning medical apparatus has not been effective in removing the coagulated blood from the inside of hypodermic needles. A design is described which has successfully removed the dried blood from hypodermic needles in a relatively short period of time. Preliminary experiments indicate that this system may also be sterilizing the needles at the same time as it is cleaning them.