Systems and methods for removing foreign objects from root canals

Patent metadata

Field	Value
Publication number	US-10806544-B2
Application number	US-201715478039-A
Country	US
Kind code	B2
Filing date	Apr 3, 2017
Priority date	Apr 4, 2016
Publication date	Oct 20, 2020
Grant date	Oct 20, 2020

Abstract

In some embodiments, a method for removing a foreign object from a root canal of a tooth is disclosed. The method can include positioning a fluid generator to be in fluid communication with the root canal of the tooth. Fluid can be supplied to the root canal. The method can include generating fluid motion and/or pressure waves in the fluid in the root canal with the fluid motion generator. The foreign object can be removed from the root canal with the pressure waves and/or the fluid motion.

First claim

What is claimed is:

1. A method for removing a foreign object from a root canal of a tooth, the method comprising:
positioning a fluid motion generator to be in fluid communication with the root canal of the tooth, the fluid motion generator comprising a pressure wave generator;
supplying fluid to the root canal;
generating fluid motion in the root canal with the fluid motion generator;
generating pressure waves in the root canal; and
moving the foreign object with the generated pressure waves and fluid motion in a proximal direction towards the fluid motion generator.

2. The method of claim 1 , further comprising removing the foreign object from the root canal with the generated pressure waves and fluid motion.

3. The method of claim 1 , wherein positioning the fluid motion generator comprises positioning a distal end of the fluid motion generator outside the root canal and maintaining the distal end outside the root canal during the generating and the moving.

4. The method of claim 3 , wherein the fluid motion generator comprises a liquid jet device having a guide tube configured to guide a liquid jet towards an impingement member at or near the distal end.

5. The method of claim 3 , wherein the fluid motion generator comprises a liquid inlet, and wherein generating fluid motion comprises directing liquid through the liquid inlet into a chamber along a direction non-parallel to a central axis of the chamber.

6. The method of claim 1 , further comprising positioning a fluid platform on the tooth over an access opening and retaining the fluid in the root canal with the fluid platform.

7. The method of claim 6 , further comprising applying suction through an outlet port of the fluid platform to remove fluid from the root canal.

8. The method of claim 1 , wherein supplying fluid comprises supplying a degassed liquid to the root canal.

9. The method of claim 1 , further comprising generating pressure waves in the root canal, the pressure waves having multiple frequencies and a broadband power spectrum.

10. The method of claim 1 , wherein generating fluid motion comprises cleaning portions of the root canal around the foreign object.

11. The method of claim 1 , wherein moving the foreign object comprises moving the foreign object without requiring the root canal to be enlarged.

12. The method of claim 1 , wherein moving the foreign object comprises moving the foreign object without requiring the fluid motion generator to contact the foreign object.

13. The method of claim 1 , wherein the foreign object is remote from the fluid motion generator and at least partially visually hidden prior to moving the foreign object.

14. The method of claim 1 , further comprising removing the foreign object from the root canal with the generated pressure waves and fluid motion.

15. A method for removing a foreign object from a root canal of a tooth, the method comprising:
positioning a pressure wave generator to be in fluid communication with the root canal of the tooth;
supplying fluid to the root canal;
generating pressure waves and fluid motion in the root canal with the pressure wave generator; and
dislodging the foreign object from the root canal with the generated pressure waves.

16. The method of claim 15 , wherein positioning the pressure wave generator comprises positioning a distal end of the pressure wave generator outside the root canal and maintaining the distal end outside the root canal during the generating and the dislodging.

17. The method of claim 16 , wherein the pressure wave generator comprises a liquid jet device having a guide tube configured to guide a liquid jet towards an impingement member at or near the distal end.

18. The method of claim 15 , wherein generating pressure waves comprises generating pressure waves having multiple frequencies and a broadband power spectrum.

19. The method of claim 18 , further comprising adjusting one or more frequencies of the pressure waves to dislodge the foreign object.

20. The method of claim 19 , wherein adjusting the one or more frequencies comprises adjusting a pressure of the supplied fluid.

21. The method of claim 15 , further comprising positioning a fluid platform on the tooth over an access opening and retaining the fluid in the root canal with the fluid platform.

22. The method of claim 21 , further comprising applying suction through an outlet port of the fluid platform to remove fluid from the root canal.

23. The method of claim 22 , wherein the fluid platform comprises a vent, the method comprising entraining air with fluid removed from the tooth chamber along an outlet line by way of the vent, the outlet port delivering the removed fluid along the outlet line.

Assignees

• Sonendo Inc

Inventors

• Khakpour Mehrzad
• Bergheim Bjarne

Classifications

• A61C17/024

  with constant liquid flow · CPC title

• A61C5/40

  Implements for surgical treatment of the roots or nerves of the teeth; Nerve needles; Methods or instruments for medication of the roots · CPC title

• A61C5/46 Primary

  Nerve extractors, e.g. needles; Means for removing broken parts of endodontic instruments · CPC title

• A61C17/02

  Rinsing or air-blowing devices, e.g. using fluid jets {or comprising liquid medication} (combined with receptacles for spittle A61C17/14; combined with power-driven cleaning or polishing devices A61C17/16) · CPC title