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David C Decava

from Seymour, CT
Age ~77

David Decava Phones & Addresses

  • 35 Sioux Dr, Oxford, CT 06478
  • Seymour, CT
  • Tavernier, FL
  • West Palm Beach, FL
  • West Haven, CT

Work

Company: Oxford science Position: Director of r and d

Industries

Medical Devices

Resumes

Resumes

David Decava Photo 1

Director Of R And D

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Location:
178 Christian St, Oxford, CT 06478
Industry:
Medical Devices
Work:
Oxford Science
Director of R and D

Business Records

Name / Title
Company / Classification
Phones & Addresses
David Decava
Secretary
Better Software Solutions Inc
Computer Software · Custom Computer Programing
53 Kathy Dr, Seymour, CT 06483
Suzanne Dixon, Seymour, CT 06483

Publications

Us Patents

Apparatus And Method For Making A Plurality Of Reagent Mixtures And Analyzing Particle Distributions Of The Reagent Mixtures

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US Patent:
6812032, Nov 2, 2004
Filed:
Mar 16, 1998
Appl. No.:
09/039789
Inventors:
David Charles DeCava - Oxford CT
Assignee:
CDC Technologies, Inc. - Oxford CT
International Classification:
G01N 3348
US Classification:
436 63, 422 67, 422 73, 422 81, 422100, 436 8, 436 17, 436 18, 436 52, 436 66, 436174, 436175
Abstract:
An apparatus is provided for hematology testing, which has a sensing unit defining a counting orifice for the flow of a blood sample through the counting orifice to analyze the blood sample, and a pump unit having three syringes. A first syringe is coupled in fluid communication with the sensing unit on the inlet side of the counting orifice for injecting a stream of blood sample through the counting orifice. A second syringe is coupled in fluid communication with the sensing chamber on the inlet side of the counting orifice for simultaneously injecting a sheath of fluid surrounding the sample stream on the inlet side of the counting orifice. And a third syringe is coupled to the sensing chamber on the outlet side of the counting orifice for aspirating a sheath of fluid from the sensing chamber surrounding the sample stream on the outlet side of the counting orifice. A control unit is connected to the pump unit for adjusting the reagent mixture to correspond to each of a plurality of different operator inputs, wherein each operator input may correspond to a respective animal species, to automatically create and analyze the reagent mixture for each animal species.

Apparatus For Pumping And Directing Fluids For Hematology Testing

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US Patent:
53804910, Jan 10, 1995
Filed:
Jan 21, 1993
Appl. No.:
8/007111
Inventors:
Edward L. Carver - Oxford CT
David C. DeCava - Oxford CT
Assignee:
CDC Technologies, Inc. - Oxford CT
International Classification:
G01N 3349
G01N 3300
US Classification:
422 73
Abstract:
An apparatus for hematology testing, which has a sensing unit defining a counting orifice for the flow of a blood sample through the counting orifice to analyze the blood sample, and a pump unit having three syringes. A first syringe is coupled in fluid communication with the sensing unit on the inlet side of the counting orifice for injecting a stream of blood sample through the counting orifice. A second syringe is coupled in fluid communication with the sensing chamber on the inlet side of the counting orifice for simultaneously injecting a sheath of fluid surrounding the sample stream on the inlet side of the counting orifice. And a third syringe is coupled to the sensing chamber on the outlet side of the counting orifice for aspirating a sheath of fluid from the sensing chamber surrounding the sample stream on the outlet side of the counting orifice.

Method And Apparatus For Determining The Distribution Of Constituent Subpopulations Within A Population Of Particles Having Overlapping Subpopulations

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US Patent:
51876736, Feb 16, 1993
Filed:
Feb 5, 1991
Appl. No.:
7/650686
Inventors:
Edward L. Carver - Oxford CT
Richard D. DeVeaux - Princeton NJ
David C. DeCava - Oxford CT
International Classification:
G06F 1536
G06F 1542
G01N 1502
US Classification:
364555
Abstract:
A method and appartatus for determining the parameters (i. e. , proportion, mean, and standard deviation) of constituent subpopulations within a sample population of particles which contains overlapping populations. The invention includes the use of the EM algorithm, an iterative process which estimates the probability that a particle belongs to any given overlapping subpopulation.

Method For Determining The Distribution Of Constituent Subpopulations Within A Population Of Particles Having Overlapping Subpopulations

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US Patent:
53495381, Sep 20, 1994
Filed:
Feb 12, 1993
Appl. No.:
8/017618
Inventors:
Edward L. Carver - Oxford CT
Richard D. DeVeaux - Princeton NJ
David C. DeCava - Oxford CT
Assignee:
Edward Lawrence Carver, Jr. - Oxford CT
International Classification:
G01N 1504
G01N 1502
US Classification:
364555
Abstract:
A method and apparatus for determining the parameters (i. e. , proportion, mean, and standard deviation) of constituent subpopulations within a sample population of particles which contains overlapping populations. The invention includes the use of the EM algorithm, an iterative process which estimates the probability that a particle belongs to any given overlapping subpopulation.

Method And Apparatus For Cell Differentiation By Measuring Apparent Cell Size, Membrane Integrity And Intracellular Complexity

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US Patent:
59072407, May 25, 1999
Filed:
May 12, 1997
Appl. No.:
8/854377
Inventors:
Edward Lawrence Carver - Oxford CT
David Charles DeCava - Oxford CT
Assignee:
CDC Technologies, Inc. - Oxford CT
International Classification:
G01N 2707
US Classification:
324 711
Abstract:
A method and apparatus are provided for differentiating cells in an automated particle analyzer, such as for use in hematological analysis, by measuring apparent cell size (or volume), membrane integrity and intracellular complexity ("voltaic fragility"). The cells are suspended in a selected reagent mixture including an electrolytic fluid, such as diluent, and if necessary, one or more membrane-modifying agents are selected and mixed in relative quantities in order to selectively alter the membrane structure (i. e. , the membrane integrity) of certain cells and thereby enhance cell discrimination. A predetermined dc voltage is applied across a sensing orifice to thereby create a dc electric field within and around the orifice, and the reagent mixture is passed through the center of the orifice. The magnitude of the change in current flowing through dc electric field is measured in response to the passage of each of a plurality of cells therethrough, and based on the measured change, a signal is generated for each cell which is indicative of the apparent size (or volume), membrane integrity and intracellular complexity of that cell. A visual display, such as an alphanumeric and/or graphical display, is then generated based on the signals facilitating differentiation of the cells.

Apparatus For Mixing Fluids For Analysis

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US Patent:
58402543, Nov 24, 1998
Filed:
Jun 2, 1995
Appl. No.:
8/458701
Inventors:
Edward Lawrence Carver - Oxford CT
David Charles DeCava - Oxford CT
Steven Skiptunas - Naugatuck CT
Assignee:
CDC Technologies, Inc. - Oxford CT
International Classification:
G01N 1506
US Classification:
422 681
Abstract:
In an apparatus for fluid analysis, such as hematologic analysis, a plurality of reagent-mixture components are each injected by a respective pump through a valve matrix and into a flow-injection unit. The flow-injection unit defines a mixing chamber including a plurality of protuberances or nubs projecting inwardly toward the center of the chamber, and spaced relative to each other both axially and radially. As the reagent-mixture components are injected into the mixing chamber, the nubs agitate the fluid flow and create turbulence, thereby dispersing the reagent-mixture components and in turn mixing the components together to create a reagent mixture. The flow rates of the reagent-mixture components are adjusted in order to select the reagent-mixture ratio as the components are combined in the flow-injection unit to thereby create the selected reagent mixture. Upon passage through the flow-injection unit, the reagent mixture is injected into a sensing unit for analyzing a particle distribution of the mixture.
David C Decava from Seymour, CT, age ~77 Get Report