CONSTITUTION:A through hole 13 for introducing blood is made in the center of a silicon single-crystal base plate 2 forming small orifices of a filter, and is surrounded by a bank 14 operating as the filter. The top surface of the bank 14 is formed to be flat so that it can be ...
A filter is provided for a dental device of the type including a hand-held working portion which utilizes air and water and a utility supply portion which supplies air and water to the hand-held worki