Surgery – Respiratory method or device – Means for cooling respiratory gas or respiration device
Reexamination Certificate
2006-01-10
2006-01-10
Bennett, Henry (Department: 3743)
Surgery
Respiratory method or device
Means for cooling respiratory gas or respiration device
C128S200140, C128S204180, C128S913000
Reexamination Certificate
active
06983749
ABSTRACT:
Devices and methods to heat and cool human beings, including inducing and maintaining hypothermia in human patients. Methods include inducing hypothermia to treat ischemic events, including heart attack and stroke, to limit damage caused by the ischemic event. Methods can include: using the lungs for heat exchange; using cooled gases for ventilation; using helium in the ventilation gas mixture, using medications to control reflex heat production; and injecting a perfluorocarbon mist into the gas stream to increase the cooling rate. The high thermal conductivity and diffusivity of helium results in greater inspired gas temperature equalization toward body temperature. Due to the latent heat of vaporization, addition of even small quantity of phase-change perfluorocarbon dramatically increases the heat carrying capacity of the respiratory gases. Hypothermia may be terminated by discontinuing the medications and warming the patient using a warmed helium-oxygen mixture.
REFERENCES:
patent: 5335650 (1994-08-01), Shaffer et al.
patent: 5429123 (1995-07-01), Shaffer et al.
patent: 5540225 (1996-07-01), Schutt
patent: 5706830 (1998-01-01), Parker
patent: 6041777 (2000-03-01), Faithfull et al.
patent: 6131571 (2000-10-01), Lampotang et al.
patent: 6166092 (2000-12-01), Sekins et al.
patent: 6244052 (2001-06-01), Kasza
patent: 6303156 (2001-10-01), Ferrigno
patent: 6536429 (2003-03-01), Pavlov et al.
patent: 6547811 (2003-04-01), Becker et al.
patent: 6694977 (2004-02-01), Federowicz et al.
patent: 2002/0023640 (2002-02-01), Nightengale
patent: 2002/0153010 (2002-10-01), Rozenberg et al.
patent: 2003/0194378 (2003-10-01), Rogueda
patent: 2004/0118407 (2004-06-01), Kandler
patent: 2004/0149284 (2004-08-01), Smith et al.
patent: WO 95/16484 (1995-06-01), None
patent: WO 99/66938 (1999-12-01), None
patent: WO 00/18459 (2000-04-01), None
Platt, Charles, “Future Tech: Here Breathe This Liquid,” DISCOVER, vol. 22, No. 10 (2001).
Sadowski, B. and M. Konarzewski, “Analgesia in Selectively Bred Mice Exposed to Cold in Helium/ Oxygen Atmosphere” Physiology & Behavior, vol. 66, No. 1, pp. 145-151 (1999).
Schmid-Elsaesser, Robert. et al. “Combination Drug Therapy and Mild Hypothermia, A Promising Treatment Strategy for Reversible, Focal Cerebral Ischemia.” STROKE, vol. 30, No. 9, pp. 1891-1899, (1999).
“Composition of Air” http://mistupid.com/chemistry/aircomp.htp. (1991).
“Ice Slurry Heart Treatment gets $4 Million Dollar Boost,” http://www.anl.gov/OPA
ews02
ews020913.htm.
“What is Liquid Ventilation., ” http://www.med.umich.edu/liquid/whatislv.html.
Therapeutic Hypothermia After Cardiac Arrest, “ILCOR Advisory Statement,” Nolan et al., 2003, pp. 118-121.
Chill Therapy is Endorsed for Some Heart Attacks,New York Times, nytimes.com. McNeil Jr., Donald G., Jul. 8, 2003, pp. 1-3.
Hozer, “Mild Therapeutic Hypothermia to Improve the Neurologic Outcome After Cardiac Arrest,” N Engl J Med, vol. 346, No. 8, Feb. 21, 2002, pp. 549-556.
Bernard et al., “Treatment of Comatose Survivors of Out-Of-Hospital Cardiac Arrest with Induced Hypothermia,” N Engl J Med, vol. 346, No. 8, Feb. 21, 2002, pp. 557-563.
Safar, et al., “Therapeutic Hypothermia After Cardica Arrest,” N Engl J Med, vol. 346, No. 8, Feb. 21, 2002, pp. 612-613.
Ragaller, et al., “Perfluorocarbon aided gas exchange,” Proceedings of the1stPostgraduate Course on Mechanical Ventilation, Department of Anaesthesiology and Intensive Care Medicine, University Hopsital Carl Gustav Carus, Technical University of Dresden, Germany.
Beran, et al., “An Improved Method for Inducing Hypothermia and Rewarming,” Aviation Space and Environmental Medicine, Aug., 1979, vol. 50, No. 8, pp. 844-846-.
Beran, et al., “Hypothermia and rewarming induced by surface and He-O2inhalate temperature control,” Journal of Applied Physiology, Aug. 1976, vol. 39, No. 2, pp. 337-340.
Musacchia, et al., “Helium-Cold Induced Hypothermia in the White Rat,” Proceedings of the Society for Experimental Biology and Medicine, vol. 142, No. 3, Mar. 1973, pp. 734-739.
Johnson Larry D.
Kumar Matthew M.
Bennett Henry
Craig Taylor Law Office, PLLC
Minnesota High-Tech Resources, LLC
Wieker Amanda
LandOfFree
Inducing hypothermia and rewarming using a helium-oxygen... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Inducing hypothermia and rewarming using a helium-oxygen..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inducing hypothermia and rewarming using a helium-oxygen... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3557894