초록 ▼

A device and method of ventilating a patient reduces the bias flow relative to existing oscillatory ventilators. The device has a gas flow circuit including an oscillating line, a patient line and an exhalation or a return line. A gas supply line and an outlet valve are in pneumatic communication wi

A device and method of ventilating a patient reduces the bias flow relative to existing oscillatory ventilators. The device has a gas flow circuit including an oscillating line, a patient line and an exhalation or a return line. A gas supply line and an outlet valve are in pneumatic communication with the gas flow circuit. One or more CO2 scrubbers and one or more check valves are provided in the circuit. A method of ventilating using such a device is also disclosed.

대표청구항 ▼

What is claimed is: 1. A device for attachment to an oscillating ventilator having an oscillatable diaphragm, comprising a gas flow circuit comprising: an oscillating line having a first end and a second end, wherein the first end is adapted for communication with the oscillatable diaphragm; a pati

What is claimed is: 1. A device for attachment to an oscillating ventilator having an oscillatable diaphragm, comprising a gas flow circuit comprising: an oscillating line having a first end and a second end, wherein the first end is adapted for communication with the oscillatable diaphragm; a patient line connected to the second end of the oscillating line; a return line, wherein both ends of the return line are connected to the oscillating line; a check valve in the oscillating line located between the two ends of the return line; and a CO2 scrubber located in the oscillating line or return line. 2. The device of claim 1, wherein the CO2 scrubber is located in the return line. 3. The device of claim 1, wherein the CO2 scrubber is located in the oscillating line. 4. The device of claim 1 wherein the return line has a check valve. 5. The device of claim 1, wherein the CO2 scrubber comprises a compound selected from the group consisting of sodium hydroxide, calcium hydroxide, barium hydroxide and combinations thereof. 6. The device of claim 1, wherein the gas flow circuit further comprises oxygen and CO2 sensors. 7. The device of claim 1, further comprising a pressure gauge connected to the gas flow circuit. 8. The device of claim 1, further comprising a gas supply line connected to the oscillating line or the patient line. 9. The device of claim 1 further comprising an outlet valve. 10. A device for attachment to an oscillating ventilator having an oscillatable diaphragm, comprising: a) a gas flow circuit comprising: an oscillating line having a first end and a second end, wherein the first end is adapted for pneumatic communication with the oscillatable diaphragm; a patient line connected to the second end of the oscillating line; a return line, wherein both ends of the return line are connected to the oscillating line; a check valve in the oscillating line located between the two ends of the return line; a CO2 scrubber located in the oscillating line or return line, b) a gas supply line in pneumatic communication with the gas flow circuit; and c) an outlet valve in pneumatic communication with the gas flow circuit. 11. The device of claim 10, wherein the CO2 scrubber is located in the return line. 12. The device of claim 10, wherein the CO2 scrubber is located in the oscillating line. 13. The device of claim 10 further comprising a bypass line, wherein both ends of the bypass line are connected to the oscillating line. 14. The device of claim 13, wherein the bypass line has a CO2 scrubber. 15. The device of claim 10 wherein the gas supply line is connected to the oscillating line. 16. The device of claim 10, wherein the outlet valve is connected to the oscillating line. 17. The device of claim 10 wherein the CO2 scrubber comprises a compound selected from the group consisting of sodium hydroxide, calcium hydroxide, barium hydroxide and combinations thereof. 18. The device of claim 10, wherein the gas flow circuit further comprises oxygen and CO2 sensors. 19. The device of claim 10 further comprising a pressure gauge connected to the gas flow circuit. 20. The device of claim 10, wherein the return line has a check valve. 21. A device for attaching to an oscillating ventilator having an oscillatable diaphragm, comprising: a) a gas flow circuit comprising: an oscillating line having a first end and a second end, the first end is adapted for connecting to the oscillatable diaphragm and having a check valve; a patient line connected to the second end of the oscillating line; and an exhalation line having one end connected to the patient line and the other end connected to the oscillating line and having a CO2 scrubber; b) a gas supply line in pneumatic communication with the gas flow circuit; and c) an outlet valve in pneumatic communication with the gas flow circuit. 22. The gas flow circuit of claim 21 further comprising a check valve in the exhalation line. 23. The device of claim 21, wherein the outlet valve is connected to the oscillating line. 24. The device of claim 21 further comprising a recirculation line between the exhalation line and the oscillating line. 25. The device of claim 21, further comprising a bypass line connected to the exhalation line. 26. The device of claim 25 wherein the bypass line has a CO2 scrubber. 27. A method of ventilating, comprising the steps of: providing a ventilating device having an oscillatable diaphragm, a gas flow circuit comprising an oscillating line including a first end and a second end, wherein the first end is in pneumatic relationship with the oscillatable diaphragm and the second end is connected to a patient line, an exhalation line having a CO2 scrubber and connected to the patient line at one end and to the oscillating line at the other end, and further having a gas supply line and an outlet valve connected to the gas flow circuit, and a CO2 scrubber, and a check valve located in the oscillating line between the oscillatable diaphragm and the second end of the oscillating line; providing a patient connected to the patient line; supplying gas with the gas supply line to the gas flow circuit; and causing movement of the oscillatable diaphragm toward and away from the oscillating line. 28. The method of claim 27, wherein the gas supplied is a mixture of oxygen and nitrogen.