Rate controlled fluid delivery in dental applications
First Claim
1. A dental syringe assembly for attachment to an air source and a water source, the assembly comprising a fluid control block comprising:
- a) a barrel portion having a first connector forattachment to an air/water syringe and a second connector for attachment to a delivery nozzle, said barrel portion defining a flow passage,b) a dial rotatably mounted to said barrel portion, said dial defining a plurality of differently sized flow orifices alignable one-at-a-time with said flow passage, each of said flow orifices allowing a predetermined level of fluid flow through said flow passage when aligned with said flow passage, andc) a deformable connecting member positioned between said dial and said flow passage, said connecting member being designed to vent excess air pressure in said flow passage to atmosphere during operation of said syringe.
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Accused Products
Abstract
The improvement of a dental syringe includes the addition of a fluid control block. The fluid control block includes a barrel portion having a first connector for attachment to a syringe handle and a second connector for attachment to a delivery nozzle. The barrel portion defines a flow passage. A dial is rotatably mounted to the barrel portion and defines a plurality of differently sized flow orifices alignable one-at-a-time with the flow passage. Each of the flow orifices allows a predetermined level of fluid flow through the flow passage when aligned with the flow passage. The improved dental syringe can be employed to assess abfraction forces acting upon teeth, to assess the success or failure of an occlusal adjustment procedure, and to reduce splatter.
166 Citations
13 Claims
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1. A dental syringe assembly for attachment to an air source and a water source, the assembly comprising a fluid control block comprising:
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a) a barrel portion having a first connector for attachment to an air/water syringe and a second connector for attachment to a delivery nozzle, said barrel portion defining a flow passage, b) a dial rotatably mounted to said barrel portion, said dial defining a plurality of differently sized flow orifices alignable one-at-a-time with said flow passage, each of said flow orifices allowing a predetermined level of fluid flow through said flow passage when aligned with said flow passage, and c) a deformable connecting member positioned between said dial and said flow passage, said connecting member being designed to vent excess air pressure in said flow passage to atmosphere during operation of said syringe. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A dental syringe assembly for attachment to an air source and a water source, the assembly comprising a fluid control block comprising:
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a) a barrel portion having a first connector for attachment to an air water syringe and a second connector for attachment to a delivery nozzle, said barrel portion defining a flow passage, b) a dial rotatably mounted to said barrel portion, said dial defining a plurality of differently sized flow orifices alignable one-at-a-time with said flow passage, each of said flow orifices allowing a predetermined level of fluid flow through said flow passage when aligned with said flow passage c) said barrel portion further defining a slot in which said dial is rotatably mounted to said barrel portion d) a pivot pin for rotatably mounting said dial to said barrel portion, said dial defining a centrally located pivot hole for placement of said pivot pin therethrough and said barrel portion defining a centrally offset pivot hole wherein an end of said pivot pin is connected, said flow passage being centrally located in said barrel portion, said flow orifices being radially spaced about said centrally located pivot hole and said flow orifices being alignable with said flow passage by rotation of said dial about said pivot pin, and e) a detente pin for restricting rotation of said dial about said pivot pin, said barrel portion defining a detent hole for placement of said detent pin therein, said dial defining a plurality of detent pin indentations, an end of said detent pin being located in one of said detent pin indentations when one of said flow orifices is aligned with said flow passage, said detent hole being located radially the same distance as the centrally located flow passage from said pivot pin, and each of said detent pin indentations being coaxially located about one of said flow orifices, one of said flow orifices being aligned with said flow passage when another of said flow orifices is aligned with said detent pin. - View Dependent Claims (13)
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Specification