Patent ID: 8876834
Filing Date: 2014-11-04
Classification: A61B

Abstract:
1. Device for the injection of bone cement comprising a reservoir container for receiving the said bone cement, having a first end comprising an outlet aperture for the injection of cement and a second end receiving a piston capable of performing longitudinal translational movements inside the body of the container, the said piston being set in motion via an injection screw projecting from the body of the reservoir and engaging with gripping means designed to be placed integrally in contact with the container, characterised in that it comprises means for rotatably driving the injection screw capable of self-locking depending on the pressure inside the container body, the said means for rotatably driving the injection screw comprising a handle having a passage receiving the injection screw and articulated therewith via a pair of male/female disks, one of the two disks, referred to as the driving disk, being integral with the rotational movements of the handle and designed to perform translational movements on the longitudinal axis of the passage in the handle, the other disk, referred to as the driven disk, being integral with the rotational movements of the injection screw, the driving disk coming into contact with the driven disk under the effect of a compressive force exerted on the distal part of the injection screw.