Mixing capsule and method of making and using same

US6715645B2 · kind B2 · utility

Assignee

• 3M ESPE AG · DE

Inventors

• Marc Peuker · Schorndorf, DE
• Michael Sick · Herrsching am Ammersee, DE
• Klaus-Peter Stefan · Hanerau-Hademarschen, DE
• Gabriele Hager · Augsburg, DE
• Angela Stenger · Kleinmachnow, DE
• Gunther Eckhardt · Frieding, DE

Key dates

• Filing date: Nov 27, 2002
• Grant date: Apr 6, 2004
• Expiry date: Nov 27, 2022

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61C5/66
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The invention relates to a mixing capsule, especially for producing dental materials. The inventive capsule is provided with a cartridge which is closed on one end thereof by means of a piston. A hemispherical cavity is configured in the piston. Said cavity forms an additional chamber and is closed in relation to the main chamber of the cartridge by means of a separating device. A body that is present in the main chamber in the initial state serves for supporting the mixing process and for chopping through the separating device at the beginning of the mixing process in such a way that the main chamber and the additional chamber form a coherent mixing chamber. The body enters the hemispherical additional chamber and acts as a displacing body at the end of the output process. The mixing capsule is provided with a coding.