Dental handpiece syringe adaptor and tip

A dental handpiece syringe tip, the handpiece for providing pressurized air and water to the tip through an adaptor, the tip comprising:

• an elongated tubular member having first and second ends, the member having a first fluid receiving passageway extending for the length of the member and in fluid communication with said ends;
• and
• a plurality of second and a plurality of third fluid receiving passageways extending for the length of the member and in fluid communication with said ends,
• the second passageways lying on a circle of a first diameter and the third passageways lying on a circle of a second diameter different than the first diameter.

A dental handpiece syringe adaptor and tip assembly for attaching a fluid dispensing tip to the handpiece, the handpiece for providing pressurized air and water to the tip through the adaptor, the assembly comprising:

• an adaptor comprising:
• an elongated body;
• said body having first and second ends and a cylindrical bore for receiving said tip at the first end;
• said body having first external peripheral threads adjacent to the second end for attaching the body to said handpiece and second external peripheral threads medially the first threads and first end for receiving a nut to secure the tip to said body;
• the body having a first passageway in said second end in fluid communication with the bore for supplying pressurized water from said handpiece to the bore and a second passageway in the body in fluid communication with the bore for supplying pressurized air from said handpiece to the bore, said bore having a first chamber for receiving the tip and a second chamber between the received tip and second end for receiving and mixing said supplied water and air;
• and
• a tip attached to the adaptor in said first chamber and spaced from said second end by said second chamber;
• said tip comprising:
• an elongated tubular member having third and fourth ends, the member having a first fluid receiving passageway extending for the length of the member and in fluid communication with said third and fourth ends;
• and
• a plurality of second and a plurality of third fluid receiving passageways extending for the length of the member and in fluid communication with said tip ends;
• the second passageways lying on a circle of a first diameter and the third passageways lying on a circle of a second diameter different than the first diameter.

A dental handpiece syringe adaptor and tip assembly comprising:

• an adaptor for the handpiece having a chamber, the chamber having first and second passageways for receiving and mixing respective pressurized water and pressurized air received from the handpiece;
• a fluid dispensing tip in fluid communication with the chamber and having at least one fluid dispensing passageway and corresponding exit port for dispensing the mixed air and water;
• and
• means for adjustably setting the droplet size dispensed by the tip.

A dental handpiece syringe adaptor for attaching a fluid dispensing tip to the handpiece, the handpiece for providing pressurized air and water to the tip through the adaptor, the adaptor comprising:

• an elongated body;
• said body having first and second ends and a cylindrical bore for receiving said tip at the first end;
• said body having first external peripheral threads adjacent to the second end for attaching the body to said handpiece and second external peripheral threads medially the first threads and first end for receiving a nut to secure the tip to said body;
• the body having a first passageway in said second end in fluid communication with the bore for supplying said water from said handpiece to the bore and a second passageway in the body in fluid communication with the bore for supplying air from said handpiece to the bore, said bore forming a first chamber for receiving the tip in spaced relation to said second end and a second chamber between the received tip and second end;
• a stop in said bore for abutting the received tip at the interface of said first and second chambers;
• and
• a member secured to and extending from said second end in the bore second chamber for forming said stop;
• the member comprising a tube with a relatively sharp edge for abutting and sealing engagement with said received tip to preclude mixing of air and water in said second chamber to provide water and air to said tip in separate paths.

A dental handpiece syringe adaptor and tip assembly for attaching a fluid dispensing tip to the handpiece, the handpiece for providing pressurized air and water to the tip through the adaptor, the assembly comprising:

• an adaptor comprising:
• an elongated body;
• said body having first and second ends and a cylindrical bore for receiving said tip at the first end;
• said body having first external peripheral threads adjacent to the second end for attaching the body to said handpiece and second external peripheral threads medially the first threads and first end for receiving a nut to secure the tip to said body;
• the body having a first passageway in said second end in fluid communication with the bore for supplying pressurized water from said handpiece to the bore and a second passageway in the body in fluid communication with the bore for supplying pressurized air from said handpiece to the bore, said bore having a first chamber for receiving the tip and a second chamber between the received tip and second end for receiving and mixing said supplied water and air;
• a tip attached to the adaptor in said first chamber and spaced from said second end by said second chamber;
• and
• a stop in said bore for abutting the received tip at the interface of said first and second chambers, said stop being formed by a member secured to and extending from said second end in the bore second chamber.

A dental handpiece syringe adaptor and tip assembly comprising:

• an adaptor for the handpiece having a chamber for receiving both air and water from the handpiece;
• and
• a dispensing tip secured to the adaptor in fluid communication with the chamber, said tip having at least one passageway for the fluid dispensed from the chamber;
• the tip comprising plastic material and being molded with an anti-microbial agent in the plastic material which agent is in fluid communication with the at least one tip passageway for reducing microbes in fluid flowing in the at least one passageway.

A dental handpiece syringe adaptor and tip assembly comprising:

• an adaptor for the handpiece having a chamber for receiving both air and water from the handpiece;
• and
• a dispensing tip secured to the adaptor in fluid communication with the chamber, said tip having at least one passageway for the fluid dispensed from the chamber;
• the adaptor being molded of thermoplastic material and being molded with an anti-microbial agent in the plastic material which agent is in fluid communication with the chamber for reducing microbes in fluid flowing in the chamber.