Method and apparatus for determining respiratory system...

Details Method and apparatus for determining respiratory system... Method and apparatus for determining respiratory system...

2005-01-04

2005-01-04

Dawson, Glenn K. (Department: 3731)

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

C128S204180, C128S204210, C128S204230, C128S204260

Reexamination Certificate

active

06837242

ABSTRACT:
Method and apparatus are described for determining respiratory system resistance (R) in a patient receiving gas from a ventilator. A negative pulse in the pressure and/or flow output of the ventilator during selected inflation cycles is generated and Paw, {dot over (V)} and V are measured at a point (To) near the beginning of the pulse, at a point (T1) near the trough of the negative pulse and at a point (T−1) preceding To. The value of R is calculated from the difference between Paw, {dot over (V)} and V at Toand at T1and where the change in patient generated pressure (Pmus) in the interval To−T1is estimated by extrapolation from the different between Paw, {dot over (V)} and V and Toand at T−1, in accordance with Equation 8.

REFERENCES:
patent: 4448192 (1984-05-01), Stawitcke
patent: 5107830 (1992-04-01), Younes
patent: 5129390 (1992-07-01), Chopin et al.
patent: 5572993 (1996-11-01), Kurome et al.
patent: 5884622 (1999-03-01), Younes
patent: 5931159 (1999-08-01), Suzuki et al.
patent: 6158432 (2000-12-01), Biondi et al.
patent: 6257234 (2001-07-01), Sun
patent: 6463930 (2002-10-01), Biondi et al.
patent: 6526974 (2003-03-01), Brydon et al.
patent: 6578575 (2003-06-01), Jonson
patent: 2077444 (1981-12-01), None
patent: WO 9211054 (1992-07-01), None
patent: WO 9722377 (1997-06-01), None

Affiliated with

Also associated with

Rating

Method and apparatus for determining respiratory system... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for determining respiratory system..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for determining respiratory system... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3430272