Abstract:
A resuscitation device for automatic compression of a victim's chest using a compression belt which exerts force evenly over the entire thoracic cavity. The belt is constricted and relaxed through a motorized spool assembly that repeatedly tightens the belt and relaxes the belt to provide repeated and rapid chest compression.
Abstract:
A counterpulsation device that operates without the use of compressed air or pressurized gas includes at least one inflatable cuff that is adapted to be placed about a selected portion of the patient's body. A conduit connects the inflatable cuff to an air transfer device so that noncompressed air can be transferred from the air transfer device to the cuff through the conduit to inflate the cuff. The conduit also connects the cuff to the air transfer device so that air can flow through the conduit to deflate the cuff. Another conduit is coupled to the first so that the air in the system can be selectively vented into the atmosphere.. A series of valves are placed on the conduit to selectively control whether air is supplied to or withdrawn from the inflatable cuff. The air moving device preferably is a cylinder having a piston that moves through the cylinder to move the air from within the cylinder through the conduit and into or out of the cuff as desired. The piston moves through the cylinder through the use of a linear servo actuator that is controlled by an appropriately programmed electronic controller so that the inflation of the cuff is timed with portions of the patient's EKG signal and peripheral plethysmographic wave.
Abstract:
The present invention provides a method for applying external counterpulsation to a patient, including detecting a blood-flow impedance signal, self-adaptive filter processing the detected blood-flow impedance signal, and adjusting inflation of an inflatable member based on the self-adaptive filter processing in order to optimize counterpulsation timing. A computer processes the signals and controls a fluid distribution device to distribute compressed fluid to a plurality of inflatable members based on said processed signals.
Abstract:
An improved connector having limited durability for a disposable chest compression vest is quiet and cost effective. Among other advantages, the connector is heat sterilizable and flat so that the vest can be efficiently packaged and stacked, which is particularly beneficial for use in a hospital.
Abstract:
Methods and apparatus for providing rapid compression to at least one appendage positioned within an inflatable sleeve are disclosed. Rapid compression is provided by filling the inflatable sleeve containing the appendage with a gas. A portion of the gas is then repeatedly withdrawn and inserted back into the inflatable sleeve to apply a compression therapy to the at least one appendage.
Abstract:
An improved method of producing high frequency chest wall oscillations (HFCWO) includes generating oscillating pneumatic pressure and applying an oscillating force to a patient's chest that corresponds to the oscillating pneumatic pressure. The frequency of oscillations changes according to a prescribed treatment regimen.
Abstract:
An improved air pulse generator produces high frequency chest wall oscillations (HFCWO) and has an electronic control to supply drive signals to a diaphragm motor, which drives a pair of diaphragm assemblies for oscillating air within the air pulse generator. The drive signals maintain angular velocity of the diaphragm motor despite a varying load on the diaphragm motor.
Abstract:
An improved air pulse generator smooths air flow between two balanced diaphragm assemblies to reduce noise and vibration forces. The diaphragm assemblies pulse in a manner that further reduces the vibration forces. Additionally, supports may be included inside the housing that reduce vibration forces for an improved air pulse generator.
Abstract:
An improved method of producing high frequency chest wall oscillations (HFCWO) includes generating oscillating pneumatic pressure and applying an oscillating force to a patient's chest that corresponds to the oscillating pneumatic pressure according to a protocol. The patient selects from a plurality of modes corresponding to protocols that change the oscillation frequency over time, while maintaining the bias line pressure.
Abstract:
A counterpulsation device that operates without the use of compressed air or pressurized gas includes at least one inflatable cuff that is adapted to be placed about a selected portion of the patient's body. A conduit connects the inflatable cuff to an air transfer device so that noncompressed air can be transferred from the air transfer device to the cuff through the conduit to inflate the cuff. The conduit also connects the cuff to the air transfer device so that air can flow through the conduit to deflate the cuff. Another conduit is coupled to the first so that the air in the system can be selectively vented into the atmosphere. A series of valves are placed on the conduit to selectively control whether air is supplied to or withdrawn from the inflatable cuff. The air moving device preferably is a cylinder having a piston that moves through the cylinder to move the air from within the cylinder through the conduit and into or out of the cuff as desired. The piston moves through the cylinder through the use of a linear servo actuator that is controlled by an appropriately programmed electronic controller so that the inflation of the cuff is timed with portions of the patient's EKG signal and peripheral plethysmographic wave.