US 12,263,051 B1Granted

Prophylaxis tool handpiece

AssigneeAvid, L.L.C.

InventorChris J. Carron

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Abstract

A dental prophylaxis tool handpiece includes a motor section having a first connector; a sleeve section having a second connector with a first end extending over a portion of the motor section and engaging a prophylaxis tool at a second end; the first and second connector configured for engagement with each other and configured to limit relative axial movement of the sleeve section relative to the motor section while allowing for free rotational movement of the sleeve section relative to the motor section; and upon engagement of the sleeve section with the motor section, a portion of the motor portion is covered to substantially isolate the portion of the motor section from contaminants. Other embodiments incorporate a positive air pressure feature and/or an ozone generator. Associated methods of preventing contamination of at least a distal portion of a motor section of a prophylaxis tool handpiece are also described.

Claims10

Dependent claims

A dental prophylaxis tool handpiece comprising:

a motor section having a first connector and wherein the motor section further comprises an air driven motor having a rotor section and an air inlet in communication with a source of pressurized air;
a sleeve section having a second connector and at a first end extending over at least a portion of the motor section and further configured to engage a prophylaxis tool at a second end of the sleeve section, wherein after engagement of the sleeve section with the motor section and with a prophylaxis tool section, walls of the sleeve section define a generally closed interior space surrounding the portion of the motor section;
wherein the first and second connector are each configured for engagement with each other, such engagement being further configured to limit relative axial movement of the sleeve section relative to the motor section while allowing for rotational movement of the sleeve section relative to the motor section;
and
wherein upon engagement of the sleeve section with the motor section, the walls of the sleeve section substantially isolate the portion of the motor section from contaminants;
and
wherein the motor section further includes an air passage in fluid communication with the rotor section and wherein the air passage is in fluid communication with and terminates at the generally closed interior space and is configured to provide a conduit for pressurized air to pass from the rotor section into the generally closed interior space and create higher than atmospheric pressure within the entire generally closed interior space.

4 more elements

A dental prophylaxis tool handpiece comprising:

a motor section having a first connector and wherein the motor section further comprises an air driven motor having a rotor section and an air inlet in communication with a source of pressurized air;
a sleeve section having a second connector and at a proximal end extending over at least a portion of a distal end of the motor section and further configured to engage a prophylaxis tool at a distal portion of the sleeve section, wherein after engagement of the sleeve section with the motor section and with a prophylaxis tool section, walls of the sleeve section define a generally closed interior space surrounding the portion of the motor section;
wherein the first and second connector are each configured for engagement with each other, such engagement being further configured to limit relative axial movement of the sleeve section relative to the motor section while allowing for free rotational movement of the sleeve section relative to the motor section;
wherein upon engagement of the sleeve section with the motor section and with a prophylaxis tool section, the walls of the sleeve section substantially isolate the portion of the motor section from contaminants;
wherein the motor section includes an air driven motor having a rotor section and an air inlet in communication with a source of pressurized air;
wherein the motor section further includes an air passage in fluid communication with the rotor section and wherein the air passage is in fluid communication with and terminates at the generally closed interior space and is configured to provide a conduit for pressurized air to pass from the rotor section to the generally closed interior space and create higher than atmospheric pressure within the entire generally closed interior space;
and
an ozone generator in fluid communication with pressurized air in the rotor section and with the interior space, the ozone generator configured to ionize pressurized air passing into the ozone generator.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/810,048Filed 5 Mar 2020 · us provisional application
Priority: 8 Mar 2019
Granted: 1 Apr 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

A61C 17/005
Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses ; Saliva removers; Dental appliances for receiving spittle:…
A61C 1/055
Ducts for supplying driving or cooling fluid, e.g. air, water: through the working tool, e.g. hollow burr
A61C 1/144
Operating tool blocking means: constricting the operating tool, e.g. chuck
A61C 17/0202
Rinsing or air-blowing devices, e.g. using fluid jets or comprising liquid medication: hand-pieces