Simulated human lung for anesthesiology simulation
First Claim
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1. A machine for simulating a human lung for use in a mannequin chest cavity, comprising:
- bellows means;
servomotor;
linkage means for connecting said servomotor to said bellows;
housing means for housing said bellows and said servomotor;
air manifold connected to said bellows;
mechanical actuator means connected to said servomotor linkage and said bellows for moving said bellows to a first position and a second position;
first computer program means for providing a physiological model for simulating a human lung;
second computer program means for providing a model for a ventilator used to ventilate patients that are anesthetized;
circuit means connected to each of said computer program means and said servomotor for positioning said servomotor as a function of the computer models; and
CO2 supply;
mass flow control valve connected to said CO2 supply and to said bellows; and
input control signal to said mass flow control valve connected to a computer and said mass flow control valve, whereby the CO2 content of the bellows can be controlled for training purposes.
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Abstract
A compact system that simulates a pair of human lungs. The lungs can be controlled to breathe spontaneously under a computer program, or the lungs can also be ventilated from a standard mechanical ventilator used in anesthesiology. Lung compliance and resistance can be varied during a simulation exercise to simulate various physiological disease conditions. The unit is compact and will fit into the chest cavity of a mannequin. The device is especially useful for the training of anesthesiologists, especially with respect to ventilating patients.
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Citations
3 Claims
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1. A machine for simulating a human lung for use in a mannequin chest cavity, comprising:
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bellows means; servomotor; linkage means for connecting said servomotor to said bellows; housing means for housing said bellows and said servomotor; air manifold connected to said bellows; mechanical actuator means connected to said servomotor linkage and said bellows for moving said bellows to a first position and a second position; first computer program means for providing a physiological model for simulating a human lung; second computer program means for providing a model for a ventilator used to ventilate patients that are anesthetized; circuit means connected to each of said computer program means and said servomotor for positioning said servomotor as a function of the computer models; and CO2 supply; mass flow control valve connected to said CO2 supply and to said bellows; and input control signal to said mass flow control valve connected to a computer and said mass flow control valve, whereby the CO2 content of the bellows can be controlled for training purposes. - View Dependent Claims (2)
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3. A machine for simulating a human lung for use in a mannequin chest cavity, comprising:
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bellows means; servomotor; linkage means for connecting said servomotor to said bellows; housing means for housing said bellows and said servomotor; air manifold connected to said bellows; mechanical actuator means connected to said servomotor linkage and said bellows for moving said bellows to a first position and a second position; first computer program means for providing a physiological model for simulating a human lung; second computer program means for providing a model for a ventilator used to ventilate patients that are anesthetized; and circuit means connected to each of said computer program means and said servomotor for positioning said servomotor as a function of the computer models; and a mode switch circuit connected to said servomotor control circuit, said mode switch having a first mode for simulating spontaneous breathing and a second mode for simulating a ventilated mode, whereby the servomotor will respond as a function of the mode switch.
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Specification