Surgery – Diagnostic testing – Respiratory
Patent
1998-07-28
2000-08-01
Winakur, Eric F.
Surgery
Diagnostic testing
Respiratory
D24129, 12820423, A61B 508
Patent
active
06095986&
ABSTRACT:
A disposable anti-fog airway adapter for use with a mainstream respiratory gas analyzer which provides a measurement of a patient's inhaled and exhaled gases. The airway adapter includes windows that are constructed of a thin, low heat capacity plastic that rapidly equilibrates to the temperature of the warm moist gases in the patient breathing circuit. In addition, the inside of the windows is also coated with an anti-fog surfactant either by laminating an anti-fog film with the window plastic prior to attaching the window to the airway adapter body or by first attaching the window to the airway adapter body and then applying the surfactant to the airway adapter after the window film is bonded in place so that the surfactant coats the entire inside of the adapter. The surfactant functions to increase the critical wetting tension of the surface it covers so that water on the window spreads into a uniform thin layer which does not absorb very much infrared energy and thus does not significantly reduce the signal strength. "Instant on" operation is accomplished because no heater and the like is necessary to warm up the windows to maintain them at an elevated temperature to prevent fogging. Numerous techniques are also provided for adhering the windows to the airway adapter body so that a substantially airtight seal may be obtained.
REFERENCES:
patent: 2739360 (1956-03-01), Voss
patent: 3641332 (1972-02-01), Redick et al.
patent: 3727050 (1973-04-01), Kerr
patent: 3987303 (1976-10-01), Stoft et al.
patent: 4287750 (1981-09-01), Eckstein et al.
patent: 4467073 (1984-08-01), Cressy
patent: 4581942 (1986-04-01), Ogura et al.
patent: 4633559 (1987-01-01), Loren
patent: 4648396 (1987-03-01), Raemer
patent: 4662369 (1987-05-01), O'Hara et al.
patent: 4727886 (1988-03-01), Conrardy et al.
patent: 4772790 (1988-09-01), Aldridge
patent: 4810924 (1989-03-01), Jelic
patent: 4811327 (1989-03-01), Petrov et al.
patent: 4821737 (1989-04-01), Nelson
patent: 4823457 (1989-04-01), Prochaska
patent: 4914720 (1990-04-01), Knodle et al.
patent: 4944294 (1990-07-01), Borek, Jr.
patent: 4958075 (1990-09-01), Mace et al.
patent: 4998018 (1991-03-01), Kurahashi et al.
patent: 5018957 (1991-05-01), Assink et al.
patent: 5067492 (1991-11-01), Yelderman et al.
patent: 5081998 (1992-01-01), Yelderman et al.
patent: 5095900 (1992-03-01), Fertig et al.
patent: 5095913 (1992-03-01), Yelderman et al.
patent: 5237984 (1993-08-01), Williams, III et al.
patent: 5846650 (1998-12-01), Ko et al.
patent: 5957127 (1999-09-01), Yamamori et al.
ATMER.RTM. 685, ICI Polymer Additives, Product Information Bulletin; ICI Specialty Chemicals, Wilmington, DE; 1990.
Solomon, "A Reliable, Accurate, CO.sub.2 Analyzer for Medical Use," Hewlett-Packard Journal, pp.3-21, Sep. 1981.
Braig James R.
Goldberger Daniel S.
Herrera Roger O.
Yelderman Mark L.
Astorino Michael
Square One Technology, Inc.
Winakur Eric F.
LandOfFree
Disposable anti-fog airway adapter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Disposable anti-fog airway adapter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Disposable anti-fog airway adapter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-659108