Patent ID: 6616620
Filing Date: 2003-09-09
Classification: A61H,A61M,A61N,Y10S

Abstract:
A device for compressing the chest of a patient comprising:a belt adapted to extend around the chest of the patient and fastened on the patient; a drive spool operably connected to the belt for repeatedly tightening and loosening the belt around the chest of the patient; a motor operably connected to the drive spool through a drive train, said motor capable of operating the drive spool repeatedly to cause the belt to tighten about the chest of the patient and loosen about the chest of the patient; said drive train comprising a motor shaft, a gearbox with a gearbox output shaft, a first sprocket wheel mounted on the gearbox output shaft, said first sprocket wheel being connected to a second sprocket wheel mounted on the drive spool through a first chain; a brake having a brake shaft, and a third sprocket wheel mounted therein, said third sprocket wheel being connected to a fourth sprocket wheel through a second chain, said fourth sprocket wheel being connected to the drive spool; and a controller for controlling operation of the motor and brake, said controller programmed to operate the motor and brake to cause repeated cycles of tightening and loosening of the belt, and intermittently operating the brake to hold the belt at a threshold of tightness.