Suction handpiece for a dental treatment unit

US10952831B1 · kind B1 · utility

Assignee

• DÜRR DENTAL SE · DE

Inventors

• Martin Dürrstein · Bietigheim-Bissingen, DE
• Andreas Hägele · Winnenden, DE

Key dates

• Filing date: Jul 6, 2020
• Grant date: Mar 23, 2021
• Expiry date: Jul 6, 2040

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61C17/096
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A suction handpiece for a dental treatment unit has a negative pressure connection which can be connected with a negative pressure source of the treatment unit. A saliva connection of the suction unit can be connected with a saliva suction cannula and an atomized spray connection that can be connected with an atomized spray suction cannula. A branched flow path connects the negative pressure connection with both the saliva connection and the atomized spray connection and includes a branching section on which a negative pressure channel ending on the negative pressure connection divides into a saliva channel ending on the saliva connection and an atomized spray channel ending on the atomized spray connection. The atomized spray channel at its narrowest point has a first cross sectional area which is at least twice as large as a second cross sectional area at the narrowest point of the saliva channel.