Dental syringe tip and adaptor

Claim 2

A syringe tip comprising an elongated cylindrical rigid plastic member having a first central passageway throughout the entire length of the cylindrical member, said first central passageway being generally circular in cross-section, and a plurality of second passageways disposed circumferentially about the first central passageway, said second passageways being generally arcuate in cross-section and extending substantially the entire length of the tip, and a syringe tip extension having an interior passageway for joining the syringe tip to an adaptor.

Claim 3

The syringe tip of claim 1 wherein the cylindrical member has a diameter in the range generally of 0.140"-0.150".

Claim 4

The syringe tip of claim 2 wherein the cylindrical member has a diameter of approximately 0.145".

Claim 5

The syringe tip of claim 1 wherein the first central passageway has a diameter in a range of generally 0.035"-0.039".

Claim 6

The syringe tip of claim 4 wherein the first central passageway has a diameter of approximately 0.036".

Claim 7

The syringe tip of claim 1 wherein each second passageway has a width in a range of generally 0.016"-0.020".

Claim 8

The syringe tip of claim 6 wherein each second passageway has a width of approximately 0.017".

Claim 9

The syringe tip of claim 1 wherein a thin support segment separates each second passageway from one another.

Claim 10

The syringe tip of claim 8 wherein the thin support segment has a thickness of approximately 0.018".

Claim 11

The syringe tip of claim 1 wherein the plurality of second passageways combine to form a continuous annulus around the first central passageway at the exit end of the syringe tip.

Claim 12

The syringe tip of claim 10 wherein the depth of the continuous annulus is approximately 0.125".

Claim 13

The syringe tip of claim 1 wherein the elongated member has a bend along the length thereof.

Claim 14

The syringe tip of claim 12 wherein the bend has an angle of approximately 30°.

Claim 15

The syringe tip of claim 1 wherein the syringe tip extension is formed integrally with the elongated member at the entrance end of the tip.

Claim 16

The syringe tip of claim 1 wherein the outer diameter of the syringe tip extension is less than the outer diameter of the elongated member.

Claim 17

The syringe tip of claim 1 wherein the elongated member is made of a polycarbonate plastic.

Claim 18

The syringe tip of claim 16 wherein the elongated member is transparent.

Claim 19

The syringe tip of claim 1 wherein the elongated member is made of nylon.

Claim 20

The syringe tip of claim 18 wherein the elongated member is transparent.

Claim 21

The syringe tip of claim 1 wherein the elongated member is transparent.

Claim 22

The syringe tip of claim 1 wherein the first central passageway is a water passageway.

Claim 23

The syringe tip of claim 21 wherein the second passageway is an air passageway.

Claim 24

The syringe tip of claim 1 wherein the second passageway is an air passageway.

Claim 25

The syringe tip of claim 1 wherein the outer diameter of the syringe tip extension is in the range generally of 0.062"-0.066".

Claim 26

The syringe tip of claim 24 wherein the outer diameter of the syringe tip extension is approximately 0.064".

Claim 27

The syringe tip of claim 1 wherein the length of the syringe tip extension is in a range of generally 0.012-0.032".

Claim 28

The syringe tip of claim 26 wherein the length of the syringe tip extension is approximately 0.022".

Claim 29

A syringe tip assembly comprising a) a syringe tip comprising an elongated cylindrical rigid plastic member having a first central passageway throughout the entire length of the cylindrical member, said first central passageway being generally circular in cross-section, and a plurality of second passageways disposed circumferentially about the first central passageway, said second passageways being generally arcuate in cross-section and extending substantially the entire length of the tip. b) an adaptor means for mounting the syringe tip to a handpiece body, and c) a syringe tip coupling device comprising a mounting stem having an internal passageway for mounting the syringe tip coupling device to the adaptor means, an expanded shoulder on one end of the mounting stem and a hollow tip member having an internal passageway mounted to the expanded shoulder for mounting the syringe tip on the coupling device.

Claim 30

A syringe tip assembly comprising a) a syringe tip comprising an elongated cylindrical rigid plastic member having a first central passageway throughout the entire length of the cylindrical member, said first central passageway being generally circular in cross-section, and a plurality of second passageways disposed circumferentially about the first central passageway, said second passageways being generally arcuate in cross-section and extending substantially the entire length of the tip. b) an adaptor means for mounting the syringe tip to a handpiece body, and c) a syringe tip coupling device comprising a mounting stem having an internal passageway for mounting the syringe tip coupling device to the adaptor means, an expanded shoulder on one end of the mounting stem and a hollow tip member having an internal passageway mounted to the expanded shoulder for mounting the syringe tip on the coupling device.

Claim 31

The syringe tip coupling device of claim 33 wherein the mounting stem has a length in a range generally of 0.165-0.185", the expanded shoulder has a length in a range generally of 0.020-0.030" inches and the hollow tip member had a length in a range generally of 0.615"-0.635".

Claim 32

The syringe tip coupling device of claim 29 wherein the mounting stem has a length of approximately 0.175", the expanded shoulder has a length of approximately 0.025" and the hollow tip member has a length of approximately 0.625".

Claim 33

A syringe tip assembly comprising: a) a syringe tip comprising an elongated cylindrical rigid plastic member having a first central passageway throughout the entire length of the cylindrical member, said first central passageway being generally circular in cross-section, and a plurality of second passageways disposed circumferentially about the first central passageway, said second passageways being generally arcuate in cross-section and extending substantially the entire length of the tip, and b) a syringe tip extension having an interior passageway mounted to the elongated member, and c) means for mounting the syringe tip and syringe tip extension to a handpiece body.

Claim 34

A syringe tip assembly comprising: a) a syringe tip comprising an elongated cylindrical rigid plastic member having a first central passageway throughout the entire length of the cylindrical member, said first central passageway being generally circular in cross-section, and a plurality of second passageways disposed circumferentially about the first central passageway, said second passageways being generally arcuate in cross-section and extending substantially the entire length of the tip, and b) a syringe tip extension having an interior passageway mounted to the elongated member, and c) means for mounting the syringe tip and syringe tip extension to a handpiece body.

Claim 35

The syringe tip assembly of claim 31 wherein the means for mounting the syringe tip and syringe tip extension to a handpiece body comprises a syringe tip adaptor 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, and d) an axial opening in the baffle for receiving the syringe tip extension.

Claim 36

A syringe tip comprising an elongated cylindrical rigid plastic member having a first central passageway throughout the entire length of the cylindrical member, said first central passageway being generally circular in cross-section, and a plurality of second passageways disposed circumferentially about the first central passageway, said second passageways being generally arcuate in cross-section and extending substantially the entire length of the tip.

Claim 37

A syringe tip comprising an elongated cylindrical rigid plastic member having a first central passageway throughout the entire length of the cylindrical member, said first central passageway being generally circular in cross-section, and a plurality of second passageways disposed circumferentially about the first central passageway, said second passageways being generally arcuate in cross-section and extending substantially the entire length of the tip.

Claim 38

The syringe tip of claim 33 wherein the cylindrical member has a diameter in the range generally of 0.140"-0.150".

Claim 39

The syringe tip of claim 34 wherein the cylindrical member has a diameter of approximately 0.145".

Claim 40

The syringe tip of claim 33 wherein the first central passageway has a diameter in a range of generally 0.035"-0.039".

Claim 41

The syringe tip of claim 36 wherein the first central passageway has a diameter of approximately 0.036".

Claim 42

The syringe tip of claim 33 wherein each second passageway has a width in a range of generally 0.016"-0.020".

Claim 43

The syringe tip of claim 38 wherein each second passageway has a width of approximately 0.017".

Claim 44

The syringe tip of claim 33 wherein a thin support segment separates each second passageway from one another.

Claim 45

The syringe tip of claim 40 wherein the thin support segment has a thickness of approximately 0.018".

Claim 46

The syringe tip of claim 33 wherein the plurality of second passageways combine to form a continuous annulus around the first central passageway at the exit end of the syringe tip.

Claim 47

The syringe tip of claim 42 wherein the depth of the continuous annulus is approximately 0.125".

Claim 48

The syringe tip of claim 33 wherein the elongated member has a bend along the length thereof.

Claim 49

The syringe tip of claim 44 wherein the bend has an angle of approximately 30°.

Claim 50

The syringe tip of claim 33 wherein the elongated member has a resilient O-ring coating around the first central passageway at the entrance end of the tip.

Claim 51

The syringe tip of claim 33 wherein the elongated member is made of a polycarbonate plastic.

Claim 52

The syringe tip of claim 47 wherein the elongated member is transparent.

Claim 53

The syringe tip of claim 33 wherein the elongated member is transparent.

Claim 54

The syringe tip of claim 33 wherein the first central passageway is a water passageway.

Claim 55

The syringe tip of claim 50 wherein the second passageway is an air passageway.

Claim 56

The syringe tip of claim 33 wherein the second passageway is an air passageway.

Claim 57

A syringe tip assembly including a) a syringe tip comprising an elongated cylindrical rigid plastic member having a first central passageway throughout the entire length of the cylindrical member, said first central passageway being generally circular in cross-section, and a plurality of second passageways disposed circumferentially about the first central passageway, said second passageways being generally arcuate in cross-section and extending substantially the entire length of the tip, and b) means for mounting the syringe tip to a handpiece body.

Claim 58

A syringe tip assembly including a) a syringe tip comprising an elongated cylindrical rigid plastic member having a first central passageway throughout the entire length of the cylindrical member, said first central passageway being generally circular in cross-section, and a plurality of second passageways disposed circumferentially about the first central passageway, said second passageways being generally arcuate in cross-section and extending substantially the entire length of the tip, and b) means for mounting the syringe tip to a handpiece body.

Claim 59

The syringe tip assembly of claim 53 wherein the means for mounting the syringe tip to a handpiece body comprises a syringe tip adaptor comprising a) a generally cylindrical body having a hollow interior, b) first 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 whereby when a syringe tip is mounted on the tapered male connector, the syringe tip will be tightly held on the connector to prevent axial rotation of the syringe tip and to ensure that air and water from the passageways do not leak into each other, and e) a rounded shoulder surrounding the male connector at the location where the male connector meets the baffle to provide a sealing surface when the syringe tip is mounted on the male connector and to provide access for air to enter into air passageways in the syringe tip while at the same time preventing water from leaking out of a water passageway in the syringe tip.

Claim 60

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 the handpiece body, and b) a syringe tip comprising an elongated cylindrical rigid plastic member having a first central passageway throughout the entire length of the cylindrical member, said first central passageway being generally circular in cross-section, and a plurality of second passageways disposed circumferentially about the first central passageway, said second passageways being generally arcuate in cross-section and extending substantially the entire length of the tip.

Claim 61

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 the handpiece body, and b) a syringe tip comprising an elongated cylindrical rigid plastic member having a first central passageway throughout the entire length of the cylindrical member, said first central passageway being generally circular in cross-section, and a plurality of second passageways disposed circumferentially about the first central passageway, said second passageways being generally arcuate in cross-section and extending substantially the entire length of the tip.

Claim 62

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) first 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, and (5) a rounded shoulder surrounding the male connector at the location where the male connector meets the baffle to provide a sealing surface when the syringe tip is mounted on the male connector, and b) a syringe tip mounted on the syringe tip adaptor, the syringe tip comprising an elongated cylindrical rigid plastic member having a first central passageway through the entire length of the cylindrical member, said first central passageway being generally circular in cross-section, and a plurality of second passageways disposed circumferentially about the first central passageway, said second passageways being generally arcuate in cross-section and extending substantially the entire length of the tip.

Claim 63

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) first 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, and (5) a rounded shoulder surrounding the male connector at the location where the male connector meets the baffle to provide a sealing surface when the syringe tip is mounted on the male connector, and b) a syringe tip mounted on the syringe tip adaptor, the syringe tip comprising an elongated cylindrical rigid plastic member having a first central passageway through the entire length of the cylindrical member, said first central passageway being generally circular in cross-section, and a plurality of second passageways disposed circumferentially about the first central passageway, said second passageways being generally arcuate in cross-section and extending substantially the entire length of the tip.