Double-ended blower and volutes therefor

Details Double-ended blower and volutes therefor Double-ended blower and volutes therefor

2005-06-28

2005-06-28

Bennett, Henry (Department: 3743)

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

C128S204180, C128S204230, C128S205110, C415S098000, C415S100000, C415S103000, C415S199100, C415S204000, C415S212100, C416S128000, C416S177000, C416S199000, C417S350000, C417S423140

Reexamination Certificate

active

06910483

ABSTRACT:
A double-ended variable speed blower for Continuous Positive Airway Pressure (CPAP) ventilation of patients includes two impellers in the gas flow path that cooperatively pressurize gas to desired pressure and flow characteristics. Thus, the double-ended blower can provide faster pressure response and desired flow characteristics over a narrower range of motor speeds, resulting in greater reliability and less acoustic noise.

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J. H. Emerson Co., Cough Assist, “Non-Invasive Removal of Bronchial Secretions,” 2pgs.
International Search Report for PCT/AU2004/000771, Mailed Aug. 23, 2004, 6 pages.

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