Bone cement hydraulic injection device in percutaneous vertebroplasty

摘要

A device for administering a viscous bone cement material under fluoroscopy on a patient's site, comprising: an injection part (a) for placement near a patient which has a chamber loaded with bone cement before the bone cement it is set, an exit hole connected to a bone needle, and a plunger (11) that pushes the bone cement through the exit hole for injection into a vertebral body; a hollow pressure part (1) having a closed hydraulic space (5) for transmitting pressure to the plunger; a hydraulic pressure generator (8) containing the sufficient volume of an incompressible fluid to impel the plunger of the injection part to deposit the required amount of bone cement in the vertebral body; and a hydraulic tube (10) for pressure transmission connecting the hydraulic pressure generator with the pressure part; wherein the hydraulic tube connecting the hydraulic pressure generator with the pressure part facilitates the generation of hydraulic pressure from a location outside a field of fluoroscopic imaging of the patient, so that a flow of viscous bone cement It can be hydraulically driven through the outlet orifice to the desired injection site within the patient while reducing a physician's exposure to ionizing radiation.