Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure
Patent
1997-07-08
2000-09-12
Weiss, John G.
Surgery
Respiratory method or device
Means for supplying respiratory gas under positive pressure
12820421, 12820314, 12820523, 600529, 600671, A61M 1600
Patent
active
061162418
ABSTRACT:
A method and an apparatus for determining when a partially or completely collapsed lung has been opened are based on the fact that in the course of opening an alveolus by supplying a gas pressure, the alveolus will generate a crackle sound. By listening to the crackle sounds via microphones, an apparatus can determine when the lung is completely open. The apparatus has a filter for filtering out the relevant frequencies for the crackle sounds and a determination unit for identifying the crackles and for determining when the lung is open based on the filtered out sounds.
REFERENCES:
patent: 4672977 (1987-06-01), Kroll
patent: 4686999 (1987-08-01), Snyder et al.
patent: 4705048 (1987-11-01), Pfohl
patent: 4889130 (1989-12-01), Lee
patent: 4951678 (1990-08-01), Joseph et al.
patent: 4981139 (1991-01-01), Pfohl
patent: 5165417 (1992-11-01), Murphy, Jr.
patent: 5301679 (1994-04-01), Taylor
patent: 5575283 (1996-11-01), Sjoestrand
patent: 5720709 (1998-02-01), Schnall
patent: 5738090 (1998-04-01), Lachmann et al.
Bohm Stephan
Huygen Paul
Lachmann Burkhard
Siemens-Elema AB
Srivastava V.
Weiss John G.
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