Hollow structure for respiratory mask cushion

US9642977B2 · kind B2 · utility

Assignee

• ResMed Corp. · AU

Inventors

• Johannes Nickol · Munich, DE
• Jens Rothfuss · Unterschleißheim, DE
• Sebastian BURZ · Germaringen, DE
• Robert Eibl · Annaberg-Buchholz, DE
• Bernd Christoph Lang · Bogen, DE

Key dates

• Filing date: Aug 9, 2013
• Grant date: May 9, 2017
• Expiry date: Sep 23, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/1352
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The present invention provides a method for producing a filled hollow structure, preferably a cushion for a breathing mask. According to said method, a hollow structure of a first material having a cavity is produced, wherein the hollow structure has an inlet to and an outlet from the cavity. The hollow structure is positioned on a tool for holding the hollow structure. Subsequently a second material is inserted through the inlet into the cavity, while gas present in the cavity can escape through the outlet. Finally, the inlet and/or the outlet is sealed. During the step of inserting the second material through the inlet into the cavity the outlet resists flow of said second material.