Surgical instrument for the preparation and injection of a bone cement

摘要

The instrument is composed of a cylindrical gun (11) whose rear part (12) carries a handle (14) fitted with an operating lever (20). The front part (13) of the gun contains a cartridge of cement which is closed at the rear by a moving stopper (32) on which a push rod (15) bears, actuated by the lever (20). The cement is prepared and mixed in the cartridge which is initially open at the front, then closed by a blocking lid (33) so that the cement can be compacted before use. The blocking lid is then replaced by a lid with a tubular nozzle (34) which makes it possible to inject the cement at the desired location in a single operation. <IMAGE>