Dental surgery apparatus capable of supplying three separate fluids to connected instruments

Claim 1

A dental surgery system comprising a plurality of dental handpieces, dental holder means (T) for receiving said plurality of dental handpieces, at least one of said handpieces (1) having an air-powered motor and at least one outlet for discharging at least water flow; said system further including a main circuit of combined power-air, and spray-air (16) and a main water supply circuit (8), a plurality of normally closed ON-OFF valves (5b) disposed along single air and single water first supply lines (6b) branched from said main air and water circuits, said first supply lines each carrying the relative fluid to single ones of said plurality of dental handpieces, said normally closed ON-OFF valves (5b) being operable to open the respective first supply lines by removal of the respective handpiece from said dental holder means (T); said at least one powered handpiece controlled by means of said plurality of normally closed ON-OFF valves (5b); a chip blower handpiece (10) provided directly by means of single air and single water second supply lines branched from said main air and water circuits upstream of said first supply line for supplying water and spray air and activated by an ON-OFF valve on each of said second supply lines; the valves on said second supply lines being operable directly by said user; master overall ON-OFF valve means (7, 7a) operable directly by the said user and located in the said main air and water circuits at a point downstream of said second supply lines (6a); a reservoir (2), a medicament (18) disposed within said reservoir (2), a dispensing pipeline (3) communicating at one end with said reservoir (2) and the opposite end of said dispensing pipeline (3) being connected to said main water supply circuit (8) at a point upstream of said second supply line branch (6a); directional control means installed at the juncture of said dispensing pipeline (3) and said main water supply circuit (8) and interlocked to switchable control means (4) in such a way to permit the user to choose between supplying said medicament only and said water only at any one time.