Apparatus and method for improved assisted ventilation
Devices and methods for allowing for improved assisted ventilation of a patient. The methods and devices provide a number of benefits over conventional approaches for assisted ventilation. For example, the methods and devices described herein permit blind insertion of a device that can allow ventilation regardless of whether the device is positioned within a trachea or an esophagus. In addition, the methods and device allow for timed delivery of ventilations based on a condition of a thoracic cavity to increase the amount and efficiency of blood flow during a resuscitation procedure.
1. A method of artificially ventilating an individual, the method comprising:
inserting a working end of a ventilation device within a respiratory opening of the individual and positioning the working end of the ventilation device within a body passageway of the individual, where the working end includes a first opening fluidly coupled to a first lumen and a second opening fluidly coupled to a second lumen, where the second opening is located along the ventilation device proximal to the first opening, the ventilation device also having a pressure sensor configured to detect pressure changes within the body passageway where the ventilation device is configured for an automatic delivery of a bolus of air into an airway of the individual at a pre-determined rate;
drawing suction through the first opening to induce collapse of the body passageway and maintaining the suction for a period of time;
delaying delivery of the bolus of air when the sensor detects a pressure change in the air within the body passageway, where the pressure change within the body passageway results from a chest compression; and
delivering the bolus of air through the first lumen upon failure to detect collapse of the body passageway and delivering the bolus of air through the second lumen while maintaining the suction upon detecting collapse of the body passageway.
2. The method of claim 1 , where delivering the bolus of air into the airway of the individual occurs after a pre-determined delay.
3. The method of claim 1 , where the sensor is configured to intermittently detect pressure changes within the body passageway.
4. The method of claim 1 , further comprising, after delaying the delivery of the bolus of air, the ventilation device resumes delivering the bolus of air at the predetermined rate if the pressure sensor fails to detect a pressure range within a first period of time.
5. The method of claim 1 , further comprising measuring a condition of a thoracic cavity using the ventilation device.
6. The method of claim 5 , where measuring the condition of the thoracic cavity comprises measuring a change in a compression of a chest of the patient.
7. The method of claim 6 , where measuring the change of the compression of the chest of the patient comprises observing a force applied to the ventilation device by the body passageway.
8. The method of claim 6 , where measuring the change of the compression of the chest of the patient comprises observing a deflection of the chest of the patient using one or more deflection sensors on the chest.
9. The method of claim 5 , where measuring the condition of the thoracic cavity comprises measuring a state of air flow within the thoracic cavity.
10. The method of claim 9 , where the ventilation device further comprises a second sensor and where measuring the state of air flow within the thoracic cavity comprises detecting airflow using the second sensor.
11. The method of claim 9 , where delaying the delivery of the bolus of air comprises using the pressure sensor to determine when a pressure in the body passageway increases and delivering air for automatically ventilating the individual when the pressure in the body passageway increases, decreases, or reaches a maximum pressure.
12. The method of claim 9 , where measuring the state of air flow comprises measuring a direction of air flow.
13. The method of claim 5 , further comprising providing a feedback based on the measured condition of the thoracic cavity.
14. The method of claim 13 , where the feedback comprises information regarding the compression, where the information is selected from at least one of a phase, rate, efficiency, depth, and timing.
15. The method of claim 13 , where providing the feedback based on the measured condition of the thoracic cavity comprises measuring a quality of the chest compression by determining a change in a volume of air in the thoracic cavity.
16. The method of claim 13 , where the feedback comprises information to increase or decrease a compression applied to a chest of the patient.
17. The method of claim 5 , where delaying the delivery of the bolus of air comprises initiating automatically ventilating of the individual when a pressure increases in the body passageway.
18. The method of claim 1 , further comprising adjusting the ventilating device to suspend the automatic delivery delivery of the bolus of air and initiating manually ventilating the individual while maintaining the suction to maintain a vacuum when the collapse of the body passageway is detected.
19. The method of claim 1 , further comprising a mask slidably positioned along the ventilation device.
20. The method of claim 1 , further comprising electrically stimulating a heart of the individual using the ventilation device.
21. The method of claim 1 , further comprising monitoring the individual for a pulse using a portion of the ventilation device located in the body passageway.