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Detection of conditions by analysis of gases or vapors

Patent 6190858 Issued on February 20, 2001. Estimated Expiration Date: Icon_subject August 23, 2019. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Inventors

Assignee

Application

No. 331749 filed on 08/23/1999

US Classes:

435/4, MEASURING OR TESTING PROCESS INVOLVING ENZYMES OR MICRO-ORGANISMS; COMPOSITION OR TEST STRIP THEREFORE; PROCESSES OF FORMING SUCH COMPOSITION OR TEST STRIP435/5, Involving virus or bacteriophage435/7.2, Involving a micro-organism or cell membrane bound antigen or cell membrane bound receptor or cell membrane bound antibody or microbial lysate435/7.21, Animal cell435/7.22, Parasite or protozoa435/7.31, Fungi (e.g., yeast, mold, etc.)435/7.32, Bacteria or actinomycetales435/29, Involving viable micro-organism435/30, Methods of sampling or inoculating or spreading a sample; methods of physically isolating an intact micro-organism435/34, Determining presence or kind of micro-organism; use of selective media435/283.1, APPARATUS435/286.5, Including liquid flow, level, or volume control435/286.6, Including gas flow or pressure control435/287.1, Including measuring or testing435/287.5Means for measuring gas pressure or gas volume of gas evolved from or consumed in an enzymatic or microbial reaction

Examiners

Primary: Leary, Louise N.

Attorney, Agent or Firm

Foreign Patent References

  • 0158497 EP. 10/12/1985
  • WO 94 04705 WO. 03/12/1994
  • WO 95 33848 WO. 12/12/1995
  • 99/09407 A1 WO. 02/12/1999

International Classes

C12Q 001/00
C12Q 001/70
G01N 033/53

Foreign Application Priority Data

1997-01-02 GB

Abstract

The invention discloses a method for monitoring at least one condition in a patient comprising the steps of (a) obtaining samples from the patient over a period of time; (b) flowing the samples, or gases associated with or produced by the samples, over at least one gas sensor; c) measuring the response or responses of the at least one gas sensor; and (d) correlating the response or responses with the occurrence or state of the at least one condition. A method for identifying a micro-organism comprising the steps of (a) providing at least one gas sensor; (b) compiling a database of responses to at least one known micro-organism under a variety of culturing conditions; c) abstracting gas or vapor from a detection region and flowing the same over the at least one gas sensor and observing the response of the sensor or sensors; and (d) comparing the response to the database.

Other References

  • Parry et al, "Leg Ulcer Odour Detection Identifies Beta-Haemolytic Streptococcal Infection", Journal of Wound Care Oct., vol. 4, No. 9, 1995
  • English translation of Berdague et al, Viandes Prod. Carnes 14 (5) (1993) 135 Sep.-Oct
  • S-W Ho, Chinese J. Microbiol Immunol. 19, (1986) 18 "Head-Space Gas-Liquid Chromatographic Analysis for Presumptive Identification of Bacteria in Blood Cultures"
  • Shiyouzou, Patent Abstracts of Japan JP 60130398 (Nov. 7, 1985)
  • Schneider et al, Digestion 32: 86-91 (1985) (14 C breath test for intestinal bacterial)
  • Gardner and Craven "Classification of bacteria age and type using an array of metal oxide sensors & pattern recognition techniques", 3rd International Symposium on Olfaction and Electronic Noses, Nov. 3-6, 1996 (publication date not known)
  • Rosenberg (Ed) "Bad Breath: Research Perspectives" 1995
  • Rossi et al "Rapid discrimination of meat products and bacterial strains using semiconductor gas sensors" Bioflavour Feb. 14-17, 1995
  • Parry et al, "Detection of ଲ-haemolytic streptococcal infection by analysis of leg ulcer odour", Proc. Annual Conference of Wound Management, (?Oct.) 1994, 135
  • Gardner and Craven, Application of an Artificial Neural Network Based Electronic Nose to the Classification of Bacteria, EUFIT, 1994
  • Greenfield, "AromaScan sniffs out medical applications", Clinica, May 23, 1994
  • Schweizer-Berberich et al, Characterisation of food freshness with sensor arrays, Sensors and Actuators B 18-19 (1994) 282
  • Independent, "No business like nose business", Feb. 14, 1994
  • Berdague et al, Viandes Prod. Carnes 14(5) (1993) 135 Sep.-Oct
  • Winquist et al, "Performance of an electronic nose for quality estimation of ground meat", Meas. Sci. Technol. 4,(1993) 1493
  • Cowan and Steel's Manual for the Identification of Medical Bacteria (3rd edition 1993.
  • MIDI Technical Notes #101, 102 (Identification of Bacteria by Gas Chromatography of Cellular Fatty Acids) ("Tracking" a Strain Using the Microbial Identification System) May 1990
  • Ray Clement (Ed) "Gas Chromatography Biochemical, Biomedical and Clinical Applications", 1990
  • Patent Abstracts of Japan JP 07 323034 A (Hitachi Ltd.), Dec. 12, 199
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