Surgery – Respiratory method or device – Means for mixing treating agent with respiratory gas
Patent
1992-10-07
1994-09-27
Burr, Edgar S.
Surgery
Respiratory method or device
Means for mixing treating agent with respiratory gas
12820312, 12820417, A61M 1500
Patent
active
053499468
ABSTRACT:
A humidification system humidifies breathable gas that is supplied to a patient with a ventilator or an anesthesia circuit having inhalation tubing connecting from the ventilator to the patient and exhalation tubing extending from the patient. The humidification system includes a blotting paper humidifier disposed in the inhalation tubing adjacent to the patient. Piping carries an amount of water from a reservoir to the humidifier, and the amount of water delivered to the humidifier is limited by a controllable pulsing valve disposed in the piping. A measurement device measures at least two parameters, and a regulation device regulates the pulsing valve as a function of the measured parameters so that an appropriate amount of water is delivered to the blotting paper to achieve a desired humidity level in the gas.
REFERENCES:
patent: 4028445 (1977-06-01), Hickmann et al.
patent: 4110419 (1978-08-01), Miller
patent: 4219725 (1980-08-01), Groninger
patent: 4303601 (1981-12-01), Grimm et al.
patent: 4481944 (1984-11-01), Bunnell
patent: 4621632 (1986-11-01), Bartels et al.
patent: 4621633 (1986-11-01), Bowles et al.
patent: 4708831 (1987-11-01), Elsworth et al.
patent: 4770168 (1988-09-01), Rusz et al.
patent: 5006109 (1991-04-01), Douglas et al.
patent: 5101820 (1992-04-01), Christopher
patent: 5172686 (1992-12-01), Anthony
"Effects of Humidity in Inspired Air on Airway Resistance and Functional Residual Capacity in Patients with Respiratory Diseases", by W. T. Josenhans et al., Respiration 26 at 435-443 (1969).
"Circuit Temperature Fails to Predict Humidity" by Gilmour I. J. FCCP et al. University of Minnesota.
"Humidifiers Kill Bacteria" by I. J. Gilmour M.D. et al.
"Researchers Find Routine Vent Tubing Changes a Costly Ritual" from Hospital Infection Control newsletter vol. 19, No. 9 at 113 (Sep. 1992).
"Ventilators, High Frequency [15-783]" and Ventilators, Time Cycled [14-361] from Technology for Respiratory Therapy (1991).
"A Method to Maintain 7-Day, Bacteria-Free Continuous Ventilator Circuits" by Richard Radford MBA RRT, Eric Anderson BS RRT and Levels of Contamination of Ventilator Circuits: A Comparison at 48 Hours and 12 Hours by Michael J. Mahlmesiter MS RRT RCPT et al., Respiratory Care vol. 32, No. 10 at 942 (Oct. 1987).
Hospital Infection Control newsletter, vol. 20, No. 2, at 103.
"Nosocomial Pneumonia and Cascade Humidifiers" by Michael McPeck BS RRT and Humidifier Nemenclature by Donald E. Craven M.D. and Kathleen A. Steger RN MPH from Respiratory Care, Sep. 1989, vol. 34, No. 9.
"Pathogenesis and Prevention of Nosocomial Pneumonia in the Mechanically Ventilated Patient" by Donald E. Craven M.D. et al. from Respiratory Care, Feb. 1989, vol. 3, No. 2.
"Contaminated Condensate in Mechanical Ventilator Circuits" by Donald E. Craven et al., Concise Clinical Study (1983).
"Prospective Study of Nosocomial Pneumonia and of Patient and Circuit Colonization During Mechanical Ventilation with Circuit Changes Every 48 Hours Versus No changes" by Dider Dreyfus et al. (1990).
"Bubbling Humidifiers Produce Microaerosols Which Can Carry Bacteria" by Frank S. Rhame M.D. et al. from Infection Control. 1986/vol. 7, No. 8.
"Contamination of Mechanical Ventilators with Tubing Changes Every 24 or 48 Hours" by Donald E. Craven M.D. et al. from the New England Journal of Medicine, vol. 306, No. 25, Jun. 24, 1982.
Search Results 1-6, "Nosocomial Pneumonia: New Concepts . . . "; Nosocomial Pneumonia in the Intubated Patient; Nosocomial Pneumonia in Intubated Patient Given Sucralfate . . . ; Bacterial Infections in Adult . . . ; Risk Factors for Pneumonia . . . ; Contaminated Medication Nebulizers . . . ; Contaminated Condensate in Mechanical . . . , all by D. E. Craven.
"A Method of Maintaining Sterility of Heated Humidifiers in Mechanical Ventilator Breathing Circuits" by Robert S. Deane, MB, Bch et al. Critical Care Medicine (1978).
"The Relationship Between Frequency of Ventilator Circuit Changes and Infectious Hazard" by Suzanne C. Lareau et al., American Review of Respiratory Disease, vol. 118 (1978).
"Work of Breathing During Pressure . . . " by J. W. Kreit; The Work of Spontaneous . . . by J. D. Truwit et al.; Imposed Work of Breathing . . . by R. M. Kacmarek et al.; and The Extra-Work of Breathing . . . by L. Brochard et al.
"A Method for Studying . . . " by P. Levy et al.; Inversed Ration Ventilation . . . by Jens B. Anderson; Effect of Continuous . . . by B. Petrof et al.; and The Use of Biofeedback to . . . by J. E. Holiday and T. M. Hyers.
"Disposable Condenser Humidifiers in Intensive Care" by T. E. Oh et al. from Anaesthesia and Intensive Care, vol. IX, No. 4, Nov. 1981.
"The Effects on Sputum Characteristics of Combining an Unheated Humidifier with a Heat-Moisture Exchanging Filter" by Masayuki Suzukawa M.D. et al. from Respiratory Care, Nov. 1989, vol. 34, No. 11.
"Efficacy of a New Hygroscopic Condenser Humidifier" by Rosemary Hay M.D. and Warren C. Miller M.D., Critical Care Medicine, vol. 10, No. 1 at 49 (1982).
"Humidification of Rapidly Flowing Gas" by Thomas J. Poulton M.D. and John B. Downs M.D., FCCP, Critical Care Medicine, vol. 9, No. 1 at 59 (1981).
"Cascade Humidifiers Produce Aerosols" F. Rhame (1983).
Abstracts of the 1989 ICAAC, p. 203.
"Studies of a New Humidifying Device as a Potential Source of Bacterial Aerosols" by Tom Schulze et al.
"Bacterial Contamination of Aerosols" by Alan K. Pierce M.D. and Jay P. Sanford M.D. from Arch. Intern. Med./vol. 131, Jan. 1973.
"An Evaluation of Bacterial Contamination of Ventilator Humidifying Systems" by Timothy M. Harris M.D. et al. from Chest, vol. 63, No. 6, Jun. 1973.
"The Potential Role of Inhalation Therapy Equipment in Nosocomial Pulmonary Infection" by James Allen Reinarz et al. from Journal of Clinical Investigation, vol. 44, No. 5, 1965.
"Bacteial Contamination Potential of Sterile, Prefilled Humidifiers and Nebulizer Reservoirs" by Joe A. Koss MS RRT et al. Heart & Lung, vol. 8, No. 6 at 1117 (1979).
"Guideline for Prevention of Nosocomial Pneumonia" by Bryan P. Simmons M.D. and Edward S. Wong M.D.
Burr Edgar S.
Lewis Aaron J.
LandOfFree
Microprocessor controlled flow regulated molecular humidifier does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Microprocessor controlled flow regulated molecular humidifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microprocessor controlled flow regulated molecular humidifier will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1259793