US 11,717,388 B2
Multi-cannula negative pressure irrigation system
L. Stephen Buchanan, Santa Barbara, CA (US)
Filed by L. Stephen Buchanan, Santa Barbara, CA (US)
Filed on Sep. 21, 2020, as Appl. No. 17/27,089.
Application 17/027,089 is a continuation of application No. 15/750,248, granted, now 10,779,920, previously published as PCT/US2016/064978, filed on Dec. 5, 2016.
Claims priority of provisional application 62/262,897, filed on Dec. 3, 2015.
Prior Publication US 2021/0059799 A1, Mar. 4, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61C 17/02 (2006.01); A61C 5/40 (2017.01)
CPC A61C 17/02 (2013.01) [A61C 5/40 (2017.02); A61C 17/0208 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method for simultaneously cleaning a plurality of root canals of a human tooth, the method comprising:
for each root canal of the plurality, connecting a negative pressure irrigation needle (20) to a corresponding one of a tube (35) of a suction manifold (37);
inserting each negative pressure irrigation needle into a corresponding root canal of the plurality, the negative pressure irrigation needles being spaced from the suction manifold;
sealably surrounding a portion of each negative pressure irrigation needle adjacent the human tooth with a first light-cure polymer in an unpolymerized state;
connecting an irrigant inlet tube (41) to an irrigant container (33);
inserting the irrigant inlet tube into the human tooth, the irrigant inlet tube spaced from the negative pressure irrigation needles;
sealably surrounding a portion of the irrigant inlet tube adjacent the human tooth with a second light-cure polymer sealably in an unpolymerized state; and
maintaining a closed vacuum system when:
drawing irrigant through the irrigant inlet tube into the plurality of root canals containing the negative pressure irrigation needles;
suctioning the irrigant down each root canal of the plurality; and
evacuating the irrigant from each root canal through a corresponding one of the negative pressure irrigation needles.