Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Patent
1997-02-03
1999-07-27
Lewis, Aaron J.
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
12820421, 12820423, A61M 1600
Patent
active
059272740
ABSTRACT:
A pressure support ventilatory assist device is disclosed. Pressure is provided by a blower which is operated at the minimum speed necessary to achieve the desired inspiration pressure. Pressure regulation is achieved by means of a novel pressure regulator valve, rather than by modulating blower speed, thereby reducing perceptible noise. The flow sensor is removed from its conventional location between the regulator valve and the patient mask to a location upstream of the regulator valve to minimize resistance to patient expiration and to isolate the valve from possible fluids in the tubing. Since the flow sensor in this location cannot sense expiration flows, the device includes circuitry for generating a model of the expiratory waveform based upon the inspiratory waveform. Actual pressure is then modulated to conform to the model waveform.
REFERENCES:
patent: 3834383 (1974-09-01), Weigl et al.
patent: 3840006 (1974-10-01), Buck et al.
patent: 3863630 (1975-02-01), Cavallo
patent: 3927327 (1975-12-01), Ernst et al.
patent: 3961627 (1976-06-01), Ernst et al.
patent: 3972327 (1976-08-01), Ernst et al.
patent: 4036221 (1977-07-01), Hillsman et al.
patent: 4239039 (1980-12-01), Thompson
patent: 4281651 (1981-08-01), Cox
patent: 4347468 (1982-08-01), Wilke
patent: 4393869 (1983-07-01), Boyarsky et al.
patent: 4430995 (1984-02-01), Hilton
patent: 4537190 (1985-08-01), Caillot et al.
patent: 4570631 (1986-02-01), Durkan
patent: 4630614 (1986-12-01), Atlas
patent: 4637386 (1987-01-01), Baum
patent: 4686974 (1987-08-01), Sato et al.
patent: 4686975 (1987-08-01), Naimon et al.
patent: 4776333 (1988-10-01), Miyamae
patent: 4782832 (1988-11-01), Trimble et al.
patent: 4823788 (1989-04-01), Smith et al.
patent: 4838257 (1989-06-01), Hatch
patent: 4915103 (1990-04-01), Visveshwara et al.
patent: 4938212 (1990-07-01), Snook et al.
patent: 4957107 (1990-09-01), Sipin
patent: 5024219 (1991-06-01), Dietz
patent: 5048515 (1991-09-01), Sanso
patent: 5117819 (1992-06-01), Servidio et al.
patent: 5134995 (1992-08-01), Gruenke et al.
patent: 5148802 (1992-09-01), Sanders et al.
patent: 5161525 (1992-11-01), Kimm et al.
patent: 5313937 (1994-05-01), Zdrojkowski
patent: 5433193 (1995-07-01), Sanders et al.
patent: 5522382 (1996-06-01), Sullivan et al.
patent: 5598838 (1997-02-01), Servidio et al.
patent: 5682878 (1997-11-01), Ogden
patent: 5685296 (1997-11-01), Zdrojkowski et al.
patent: 5694923 (1997-12-01), Hete et al.
patent: 5697364 (1997-12-01), Chua et al.
Beverly Bruce
Servidio John L.
Boss Gerald R.
Healthdyne Technologies, Inc.
Lewis Aaron J.
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