Syringe tip locking assembly

dental syringe assembly comprising:

• a) a dental handpiece body, and
• b) a locking assembly for locking a syringe tip in a dental handpiece body comprising
• 1) an adaptor mounted in the handpiece body, the adaptor including a hollow body portion having external threads and a tapered male member mounted on the interior of the hollow body portion;
• 2) a raised lip extending circumferentially and exteriorly around an open end of the hollow body;
• 3) a gripping member comprising a generally hollow tubular body separated into a plurality of fingers, each finger separated from an adjacent finger by a longitudinal slot;
• 4) a raised lip extending circumferentially and interiorly around an open end of the gripping member;
• 5) the open end of the gripping member being mounted onto the open end of the hollow body of the adaptor;
• and
• 6) a locking cap comprising a generally hollow body having internal threads;
• whereby when the locking cap is screwed onto the adaptor, the gripping member compresses around a syringe tip to securely hold the syringe tip inside the adaptor.

A syringe tip adaptor for connecting a syringe tip to a handpiece body comprising;

• a) a generally cylindrical body having a hollow interior;
• b) means for connecting the cylindrical body to the handpiece body;
• c) a baffle mounted within the hollow interior of the cylindrical body;
• d) a tapered male connector formed integrally with the baffle and having an axial opening therethrough adapted to cooperate with a central passageway in a syringe tip to provide a water passageway from the handpiece through the adaptor and into the syringe tip whereby when a syringe tip is mounted on the tapered male connector, the syringe tip will be tightly held on the tapered male connector to prevent axial rotation of the syringe tip and to ensure that the air and water passageways do not leak into each other;
• and
• e) a raised lip extending circumferentially and exteriorly around an open end of the hollow body and adapted to cooperate with a syringe tip locking assembly to securely hold a syringe tip onto the tapered male connector.

A dental syringe assembly comprising a handpiece body including means for mounting a syringe tip assembly to the handpiece body, said syringe tip assembly comprising

• a) a syringe tip adaptor for connecting a syringe tip to a handpiece body comprising
• 1) a generally cylindrical body having a hollow interior;
• 2) means for connecting the cylindrical body to the handpiece body;
• 3) a baffle mounted within the hollow interior of the cylindrical body;
• 4) a tapered male connector formed integrally with the baffle and having an axial opening therethrough adapted to cooperate with a central passageway in a syringe tip to provide a water passageway from the handpiece through the adaptor and into the syringe tip whereby when a syringe tip is mounted on the tapered male connector, the syringe tip will be tightly held on the tapered male connector to prevent axial rotation of the syringe tip and to ensue that the air and water passageways do not leak into each other;
• and
• 5) a raised lip extending circumferentially and exteriorly around an open end of the hollow body and adapted to cooperate with a syringe tip locking assembly to securely hold a syringe tip onto the tapered male connector;
• and
• b) a syringe tip mounted on the syringe tip adaptor.