MRI/NMR-compatible, tidal volume control and measurement...

Surgery – Respiratory method or device – Means for supplying respiratory gas under positive pressure

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C128S204210, C128S204220, C128S204230, C128S203250

Reexamination Certificate

active

10828824

ABSTRACT:
Ventilator systems include: (a) a mass flow controller; (b) a gas delivery valve in communication with the mass flow controller and configured to selectively dispense a plurality of different gases to a subject; (c) a first gas source in fluid communication with the gas delivery valve; (d) a second gas source in fluid communication with the gas delivery valve; (e) a first pressure sensor located upstream of the gas delivery valve; (f) a second pressure sensor located downstream of the gas delivery valve; and (g) a controller operatively associated with the first and second pressure sensors and the mass flow controller, the controller comprising computer program code that monitors the pressures measured by the first and second pressure sensors and automatically dynamically adjusts the flow rate of the mass flow controller.

REFERENCES:
patent: 5545396 (1996-08-01), Albert et al.
patent: 5612103 (1997-03-01), Driehuys et al.
patent: 5642625 (1997-07-01), Cates et al.
patent: 5809801 (1998-09-01), Cates et al.
patent: 6079213 (2000-06-01), Driehuys et al.
patent: 6085743 (2000-07-01), Chupp et al.
patent: 6295834 (2001-10-01), Driehuys
patent: 6423387 (2002-07-01), Zollinger
patent: 6467479 (2002-10-01), Albert et al.
patent: 6551559 (2003-04-01), Cates et al.
patent: 6581599 (2003-06-01), Stenzler
patent: 2004/010045 (2004-01-01), None
Hedlund, et.al., MR-compatible ventilator for small animals; computer controlled ventilation for proton and noble gas imaging, 18 Magnetic Resonance Imaging, pp. 753-759 (2000).
Hedlund, et.al., Three-dimensional MR microscopy of pulmonary dynamics, Society of Magnetic Resonance (New York, NY 1996).
Hedlund, et.al., Poster at the Amer. Thoracic society 1998 International Meeting (Chicago, 1998) MRI of pulmonary airways with hyperpolarized helium; a computer-controlled ventilator for imaging synchronous gas delivery in animal studies (describing ventilator technology).
Kwang, et.al., Gas Mixing for Biomedical Application Using Mass Flow Controllers medical and Biological Engineering and Computing, Peter Peregrinus Ltd., Stevenage, GB vo. 27, No. 6, Nov. 1, 1989 pp. 634-636.
Black, et.al., In vivo He-3 MR Images of Guinea Pig Lungs, Radiology, 199(3), pp. 867-870 (1996).
Int'l Search Report PCT/US2004/012237 dated Oct. 14, 2004.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

MRI/NMR-compatible, tidal volume control and measurement... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with MRI/NMR-compatible, tidal volume control and measurement..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and MRI/NMR-compatible, tidal volume control and measurement... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3851164

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.