Dental syringe
First Claim
1. A dental syringe comprising:
- a barrel extending along a longitudinal axis and including an interior space and a longitudinal window formed in a side wall of the barrel for receiving a cartridge that contains medication;
a flexible flange member formed at a proximal end of the barrel with one end of the flexible flange member extending into an opening at the proximal end that forms an entrance into the interior space of the barrel; and
a plunger received in and axially displaceable within the interior space; and
a plurality of spaced grooves provided on an outer surface of the plunger, wherein the flange is configured to selectively engage the grooves while generating at least one indicating signal corresponding to a predetermined dosage of medication dispensed from the cartridge during axial displacement of the plunger as the flange engages at least one groove.
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Accused Products
Abstract
According to one exemplary embodiment of the present invention, a dental syringe includes a barrel extending along a longitudinal axis and including an interior space and a longitudinal window formed in a side wall of the barrel for receiving a cartridge that contains medication. A flexible flange member is formed at a proximal end of the barrel with one end of the flexible flange member extending into an opening at the proximal end that forms an entrance into the interior space of the barrel. The dental syringe has a plunger received in and axially displaceable within the interior space, with the plunger having a plurality of spaced grooves provided on an outer surface thereof. The flange is configured to selectively engage the grooves while generating an indicating signal corresponding to a predetermined dosage of medication dispensed from the cartridge during axial displacement of the plunger as the flange engages successive grooves.
56 Citations
24 Claims
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1. A dental syringe comprising:
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a barrel extending along a longitudinal axis and including an interior space and a longitudinal window formed in a side wall of the barrel for receiving a cartridge that contains medication;
a flexible flange member formed at a proximal end of the barrel with one end of the flexible flange member extending into an opening at the proximal end that forms an entrance into the interior space of the barrel; and
a plunger received in and axially displaceable within the interior space; and
a plurality of spaced grooves provided on an outer surface of the plunger, wherein the flange is configured to selectively engage the grooves while generating at least one indicating signal corresponding to a predetermined dosage of medication dispensed from the cartridge during axial displacement of the plunger as the flange engages at least one groove. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A dental syringe comprising:
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a barrel extending along a longitudinal axis and including an interior space and a longitudinal window formed in a side wall of the barrel for receiving a cartridge that contains medication;
a flexible flange member formed at a proximal end of the barrel with one end of the flexible flange member extending into an opening at the proximal end that forms an entrance into the interior space of the barrel; and
a plunger received in and axially displaceable within the interior space;
the plunger having a first set of grooves formed therein along a longitudinal length of the plunger and spaced a first distance apart from one another and a second set of grooves formed therein along the longitudinal length of the plunger and spaced a second distance from one another that is different from the first distance, wherein the flexible flange member is configured to selectively engage one of the first set of grooves and the second set of grooves while generating an indicating signal corresponding to a predetermined dosage of medication dispensed from the cartridge during axial displacement of the plunger as the flexible flange member engages successive grooves. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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23. A dental syringe comprising:
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a barrel extending along a longitudinal axis and including an interior space and a longitudinal window formed in a side wall of the barrel for receiving a cartridge that contains medication;
a dosage dispensing member associated with the barrel for administering a predetermined dosage amount of medication; and
a plunger received in and axially displaceable within the interior space;
the plunger having first and second dosage dispensing features formed as a part thereof for selectively permitting two different dosage amounts of medication to be dispensed based on the orientation of the plunger within the barrel and based on which of the first and second dosage dispensing features is operatively coupled to the dosage dispensing member.
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24. A method of controllably and selectively evacuating or dispensing a predetermined dosage of medication comprising the steps of:
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providing a dental syringe including;
a barrel extending along a longitudinal axis and including an interior space and a longitudinal window formed in a side wall of the barrel for receiving a cartridge that contains medication;
a flexible flange member formed at a proximal end of the barrel with one end of the flexible flange member extending into an opening at the proximal end that forms an entrance into the interior space of the barrel; and
a plunger received in and axially displaceable within the interior space; and
a plurality of spaced grooves provided on an outer surface of the plunger, wherein the flange is configured to selectively engage the grooves while generating at least one indicating signal corresponding to a predetermined dosage of medication dispensed from the cartridge during axial displacement of the plunger as the flange engages successive grooves; and
axially displacing a plunger within the interior space such that the flange engages at least one other groove while generating an indicating signal corresponding to the predetermined dosage of medication dispensed from the cartridge during axial displacement of the plunger.
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Specification