Patent ID: 8845646
Filing Date: 2014-09-30
Classification: A61B,A61F,A61M

Abstract:
1. A method for dispensing bone cement from a cartridge, the method comprising: inserting a first end of the cartridge into a housing, inserting a plunger into the cartridge, the plunger having an impedance sensor mounted to a first side thereof, advancing the plunger toward a nozzle of the cartridge, contacting bone cement within the cartridge with the impedance sensor as the plunger is advanced toward the nozzle, receiving an output signal from the impedance sensor while the impedance sensor is in contact with the bone cement, determining an impedance value of the bone cement based on the output signal, and generating a human-detectable signal based on the impedance value, wherein generating the human-detectable signal based on the impedance value includes activating an indicator located on the housing.