US 12,263,051 B1
Prophylaxis tool handpiece
Chris J. Carron, Bloomsdale, MO (US)
Assigned to Avid, Inc., Bloomsdale, MO (US)
Filed by Avid, Inc., Bloomsdale, MO (US)
Filed on Mar. 5, 2020, as Appl. No. 16/810,048.
Claims priority of provisional application 62/815,769, filed on Mar. 8, 2019.
Int. Cl. A61C 17/022 (2006.01); A61C 1/05 (2006.01); A61C 1/14 (2006.01); A61C 17/00 (2006.01); A61C 17/02 (2006.01); A61C 17/16 (2006.01)
CPC A61C 17/005 (2013.01) [A61C 1/055 (2013.01); A61C 1/144 (2013.01); A61C 17/0202 (2013.01); A61C 17/022 (2013.01); A61C 17/16 (2013.01)] 10 Claims
OG exemplary drawing
 
10. 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.