Patents by Inventor Andrew Obeid

Andrew Obeid has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20190282157
    Abstract: An apparatus for sensing a property of a bladder wall, such as bladder-wall oxygen, comprises an elongate catheter (1) and an elongate sensor (2). The catheter (1) defines a path from a proximal end of the catheter to a distal end of the catheter. The catheter comprises a sensor channel for guiding the elongate sensor along at least a part of the path, the sensor channel opening at a sensor port (3) towards the proximal end of the catheter. The sensor channel comprises (i) an enclosed lumen portion (10), arranged to surround the sensor, and (ii) an open furrow portion (16). The furrow is located nearer to the distal end of the catheter than is the enclosed lumen. The furrow is arranged to allow the sensor (2) to exit the enclosed lumen (10) in a direction substantially parallel to, or tangential to, the path of the catheter (1) at a proximal end of the furrow.
    Type: Application
    Filed: November 3, 2017
    Publication date: September 19, 2019
    Inventors: Andrew OBEID, Trevor DU PLOOY
  • Publication number: 20130197327
    Abstract: An analyte sensor is disclosed that comprises: a light source arranged for emitting light to a probe; a detector arranged to receive fluorescence light emitted from said probe in response to the light incident from the light source, and to generate an output signal; and a signal processor arranged to determine information related to the presence of an analyte at the probe based on at least the output signal of the detector, wherein the probe comprises nano-particles comprising fluorescent material for which the fluorescence changes in response to the presence of analyte.
    Type: Application
    Filed: June 23, 2011
    Publication date: August 1, 2013
    Applicant: ISIS INNOVATION LIMITED
    Inventors: Rongsheng Chen, Andrew Farmery, Clive Hahn, Andrew Obeid
  • Patent number: 8383047
    Abstract: A sensor for measuring the concentration of an assay substance, such as oxygen in tissue. The sensor comprises an optical fiber (2) which passes through, a gas isolation collar (11) into a cavity (15) defined by a needle tube (13) attached to the gas isolation collar. Both the optical fiber (2) and the needle tube (13) are bonded to the gas isolation collar (11) in gas-tight fashion. The cleaved end (8) of the optical fiber within the cavity is provided with an optically active substance (9) having optical properties, such as fluorescence, dependent on the concentration of the assay substance. The cavity (15) is filled with a polymer (16) which is permeable to the assay substance. Lateral flow passages (18) are provided for the assay substance to pass into the permeable polymer (16) and to the fluorophor (9). Light is supplied to the fluorophor via the optical fiber, and functions of its fluorescence are measured to calculate the concentration of the assay substance.
    Type: Grant
    Filed: March 13, 2006
    Date of Patent: February 26, 2013
    Inventors: Andrew Obeid, Neville Davies, Suzanne Douglas, Trevor DuPlooy, Geoffrey Ward
  • Publication number: 20090075321
    Abstract: A sensor for measuring the concentration of an assay substance, such as oxygen in tissue. The sensor comprises an optical fibre (2) which passes through, a gas isolation collar (11) into a cavity (15) defined by a needle tube (13) attached to the gas isolation collar. Both the optical fibre (2) and the needle tube (13) are bonded to the gas isolation collar (11) in gas-tight fashion. The cleaved end (8) of the optical fibre within the cavity is provided with an optically active substance (9) having optical properties, such as fluorescence, dependent on the concentration of the assay substance. The cavity (15) is filled with a polymer (16) which is permeable to the assay substance. Lateral flow passages (18) are provided for the assay substance to pass into the permeable polymer (16) and to the fluorophor (9). Light is supplied to the fluorophor via the optical fibre, and functions of its fluorescence are measured to calculate the concentration of the assay substance.
    Type: Application
    Filed: March 13, 2006
    Publication date: March 19, 2009
    Inventors: Andrew Obeid, Neville Davies, Suzanne Douglas, Trevor DuPlooy, Geoffrey Ward