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US4643974A Expired / Lapsed US ⏱️ 0.0 years remaining

Device for identifying microorganisms

Assignee: Sclavo SpA
•
Filing: 1984-01-31
•
Granted: 1987-02-17
•
Expires: 2004-01-31
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Abstract

Abstract A device for determining the presence and identity of a specific microorganism in a biological sample based on biochemical tests is disclosed comprising a set of containers, each of which contains a reagent for performing an individual biochemical test useful for the identification of microorganisms, the set of containers being assembled on a single supporting member which is imprinted with a series of marks adjacent the containers, which marks are indicative of the expected result of a specific microorganism's performance in each biochemical test using the reagent of each individual container, the series of biochemical test containers, reagents and corresponding marks being sufficient to identify a specific microorganism. Series of marks corresponding to the expected biochemical test results for several specific microorganisms are preferably imprinted on the supporting member, making possible the identification of a single microorganism species from among several possibly present. The marks may have different lengths, colors and graphical form or may be also replaced by symbols and/or numbers. In a preferred embodiment, a device is described for the identification of a single species from among the seven pathogenic species of the Candida genus.

Inventors

  • 👤 Rodolfo Berretti
  • 👤 Paolo Tarli
  • 👤 Brunilde Berti

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 22:28
CPC Classifications
C; C12; C12M; C12M41/00; C12M41/30; C12M41/36; C12Q; C12Q1/00; C12Q1/02; C12Q1/04; Y; Y10; Y10S; Y10S435/00; Y10S435/809

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 101 words
A device for the identification of microorganisms based on biomedical tests and consisting of a plurality of containers assembled on a single supporting member, each container holding the reagents necessary to perform an individual biochemical test on a microorganism-containing sample introduced therein, said supporting member exhibiting on its surface one or more series of marks adjacent the containers corresponding to a particular microorganism and indicating, for each biochemical test for which reagents are held in the adjacent containers, the characteristic performance of said particular microorganism in each of said tests, which series of marks is sufficient for identifying a specific microorganism.
Claim 2
Independent Claim 101 words
A device for the identification of microorganisms based on biomedical tests and consisting of a plurality of containers assembled on a single supporting member, each container holding the reagents necessary to perform an individual biochemical test on a microorganism-containing sample introduced therein, said supporting member exhibiting on its surface one or more series of marks adjacent the containers corresponding to a particular microorganism and indicating, for each biochemical test for which reagents are held in the adjacent containers, the characteristic performance of said particular microorganism in each of said tests, which series of marks is sufficient for identifying a specific microorganism.
Claim 3
Dependent Claim 25 words
Device according to claim 1, wherein the reagents are in the form of dried or freeze fried solutions, or are solids or in tablet form.
Claim 4
Dependent Claim 25 words
Device according to claim 1, wherein the marks have different lengths, colours and/or graphical form and can also be partially replaced by symbols and/or figures.
Claim 5
Dependent Claim 29 words
Device according to claim 1, wherein such containers are an integral part of the supporting member or are fixed on the top surface thereof by adhesion of insertion therein.
Claim 6
Dependent Claim 13 words
Device according to claim 1, wherein a central bore can be formed therethrough.
Claim 7
Dependent Claim 11 words
Device according to claim 1, wherein the microorganism is a yeast.
Claim 8
Dependent Claim 17 words
Device according to claim 1, wherein the microorganism belongs to a pathogenic species of the Candida genus.
Claim 9
Dependent Claim 29 words
Device according to claim 1, wherein the microorganism is a member of the group, Candida albicans, Candida stellatoidea, Candida krusei, Candida tropicalis, Candida guillermondii, Candida parapsilosis, and Candida pseudotropicalis.
Claim 10
Dependent Claim 20 words
Device according to any one of claims 7 and 8, wherein the containers in the device are 16 in number.
Claim 11
Dependent Claim 30 words
Device according to any one of claims 7 and 8, wherein the reagents include KNO 3 , cycloheximide plus glucose, urea, glucose alone, sucrose, lactose, maltose, raffinose, cellobiose, inositol, trehalose.
Claim 12
Dependent Claim 44 words
A method for the identification of a particular microorganism contained in a biological sample conprising adding an amount of said biological sample or a slurry thereof to each of the containers of the device according to claim 1 sufficient to perform said biochemical tests.

References Cited (Backward Citations)

US807203A Cited
US2880865A Cited
US3728228A Cited
US4056359A Cited
US3891507A Cited
US3957586A Cited
US4024530A Cited
US4258135A Cited
USD259141S Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1990-02-16 1990-08-18 1991-02-17 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1994-02-16 1994-08-18 1995-02-17 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1998-02-16 1998-08-18 1999-02-17 $7700.00 Window Closed / Lapsed

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