A cylinder for mixing components to form bone cement

US5551778A · kind A · utility

Assignee

• MERCK PATENT GESELLSCHAFT MIT BESHRANK TER HAFTUNG · DE

Inventors

• Gunter Hauke · Mühltal, DE
• Rainer Specht · Fürth, DE
• Ralf Krotz · Wiesloch, DE
• Reiner Funk · Riedlingen, DE
• Peter Martin · Mountain View, US
• Berthold Nies · Kassel, DE

Key dates

• Filing date: Jul 14, 1995
• Grant date: Sep 3, 1996
• Expiry date: Jul 14, 2015

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01F2101/20
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A device for mixing and discharging bone cement has a mixing cylinder which consists of two cylinder parts and in which an openworked mixing plunger can be moved axially. The lower cylinder part is sealed off by a discharging plunger. A separating plunger is arranged axially displaceably in the mixing cylinder between the mixing plunger and the discharging plunger, which separating plunger seals off the one cylinder part before the two cylinder parts are connected. The separating plunger has through-flow channels through which a liquid monomer can flow from the lower cylinder part to a pulverulent polymer in the upper cylinder part at the start of the mixing procedure.