Body for distributing bone cement for the anchoring of implants

US5501687A · kind A · utility

Assignee

• Sulzer Medizinaltechnik AG · CH

Inventors

• Hans-Georg Willert · Göttingen, DE
• Kurt Bider · Winterthur, CH

Key dates

• Filing date: Nov 4, 1993
• Grant date: Mar 26, 1996
• Expiry date: Nov 4, 2013

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29L2031/7532
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A body (2) for distributing bone cement (8) rests by an elastic collar (4) against the outer edge of a hollow (1) in the bone and has a passage (5) through into the hollow (1) in the bone, into which a syringe (6) for bone cement may be inserted. In the hollow (1) in the bone the body (2) is made as a displacement body of the shape (3) of the implant which is to be inserted later. During injection into the space between the body and the hollow in the bone a designed pressure is maintained until the viscosity of the bone cement (8) is adequate for taking the body (2) out of the hollow (1) in the bone without bone cement (8) flowing back. Subsequently the actual implant may be pressed into the thus prepared but still plastically deformable countermould of bone cement (8) .