The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 21, 2026
Filed:
Jul. 24, 2020
Koninklijke Philips N.v., Eindhoven, NL;
Joldert Maria Boersma, Zuidhorn, NL;
Jason Daniel Miller, Seattle, WA (US);
Jay Wolfer, Kirkland, WA (US);
Le Gia Pham, Bellevue, WA (US);
Egbert Van De Veen, Ijsselmuiden, NL;
Jose Villar, Lake Forest Park, WA (US);
Aaldert Geert Zijlstra, Zuidlaren, NL;
Klaas Kooijker, Drachten, NL;
KONINKLIJKE PHILIPS N.V., Eindhoven, NL;
Abstract
The present disclosure is directed to mechanisms for oral irrigator fluid channels which provide back flow prevention. The oral irrigator comprises: an irrigator tip; a tether having a first end and a second end, a third channel arranged between the first end and the second end, where the first end of the tether is in fluid communication with the second channel; a reservoir containing a fluid, the reservoir in fluid communication with a pump, the pump in fluid communication with the third channel and the second end of the tether; and an arrowhead check valve comprising a resilient element and an elastic head element, the arrowhead check valve arranged within the first channel, the second channel, or the third channel. The irrigator tip comprises: a nozzle comprising a first channel; and a handle comprising a second channel in fluid communication with the first channel.