Patents by Inventor Singh Chana

Singh Chana 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).

  • Patent number: 12144533
    Abstract: Apparatus and methods for electrosurgery are disclosed. In one arrangement, an electrosurgical element and a control system are provided. The electrosurgical element is electrically driven in a first electrical driving mode. The first electrical driving mode is such as to cause heating of human or animal tissue by the electrosurgical element. The heating contributes to modification or cutting of tissue by the electrosurgical element. The electrosurgical element is electrically driven in a second electrical driving mode. An electrical response of the electrosurgical element is measured during the electrical driving of the electrosurgical element in the second electrical driving mode.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: November 19, 2024
    Assignee: OXFORD UNIVERSITY INNOVATION LIMITED
    Inventors: Kamaljit Singh Chana, Parvinderpal Singh Sains, Vikram Sridhar, Richard T. Bryan
  • Publication number: 20240285326
    Abstract: The invention provides a wire delivery device, suitable for use in removing bony ingrowth from an implant such as a femoral implant. The wire delivery device comprises first and second elongate bodies and holds and provides cutting wire in the form of medial and lateral cutting wire arcs. The cutting wire can be used to cut by pushing the first and second elongate bodies in an alternating motion in the desired direction of cutting.
    Type: Application
    Filed: February 9, 2024
    Publication date: August 29, 2024
    Inventor: Gursharan Singh Chana
  • Patent number: 11617661
    Abstract: The invention provides a targeting device suitable for use in removing a femoral implant from the surrounding tissue, wherein the device comprises: (A) an anterior guide member (1), (B) a posterior guide member (4), (C) an engagement member (7), (D) a first pair of parallel connector rails (509, 510), and (E) an adjustment system (13). When the anterior guide member and the posterior guide member are connected by the first pair of connector rails, via the engagement member, the angled channels of the anterior guide member and the posterior guide member converge in the direction of a distal end, with the convergence angle of the angled channels being in the range of from 2 to 6 degrees, such as from 2 to 5 degrees.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: April 4, 2023
    Inventor: Gursharan Singh Chana
  • Patent number: 11543377
    Abstract: A probe comprises a resistive element configured to be brought into thermal contact with an entity to be sensed. A measurement system applies a plurality of heating pulses to the resistive element by driving an electrical current through the resistive in element and measures an electrical response of the resistive element to the heating pulses in order to determine information about either or both of the composition and state of the entity. The measurement system generates an output signal using the measured electrical response, wherein the output signal is generated by progressively offsetting the measured electrical response such that, in the event of an average temperature of the resistive element changing between different heating pulses due to a drift in the average temperature of a portion of the entity being sensed, a variance over the plurality of heating pulses of a value of the output signal at a predetermined common reference point within each heating pulse is reduced.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: January 3, 2023
    Assignee: OXFORD UNIVERSITY INNOVATION LIMITED
    Inventors: Kamaljit Singh Chana, Vikram Sridhar
  • Publication number: 20220225890
    Abstract: The invention relates to sensing compositional information about material by measuring thermal properties of the material. In one arrangement there is provided a needle probe for sensing compositional information. The probe comprises a needle having a tip region. A resistive element is attached to the needle at the tip region. A measurement system is configured to: 1) drive an electrical current through the resistive element to apply heating to the resistive element, and 2) measure an electrical response of the resistive element to the heating. A processing unit analyses the measured electrical response of the resistive element to the heating to determine compositional information about material in contact with the tip region.
    Type: Application
    Filed: April 8, 2022
    Publication date: July 21, 2022
    Applicant: Oxford University Innovation Limited
    Inventors: Kamaljit Singh CHANA, Parvinderpal Singh SAINS
  • Patent number: 11384673
    Abstract: An energy recovery system and a method of recovering energy are disclosed. In one arrangement, an exhaust gas conduit system guides a flow of exhaust gas generated by a combustion process. A heat exchange fluid circuit guides a flow of a heat exchange fluid. An electrical generator generates electrical power from the flow of heat exchange fluid. The heat exchange fluid circuit is configured so that heat is transferred from the exhaust gas to the heat exchange fluid while the exhaust gas is flowing through the exhaust gas conduit system.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: July 12, 2022
    Inventors: Kamaljit Singh Chana, Vikram Sridhar, Sunny Singh Chana, Michael Joseph Pekris
  • Patent number: 11324416
    Abstract: The invention relates to sensing compositional information about material by measuring thermal properties of the material. In one arrangement there is provided a needle probe for sensing compositional information. The probe comprises a needle having a tip region. A resistive element is attached to the needle at the tip region. A measurement system is configured to: 1) drive an electrical current through the resistive element to apply heating to the resistive element, and 2) measure an electrical response of the resistive element to the heating. A processing unit analyses the measured electrical response of the resistive element to the heating to determine compositional information about material in contact with the tip region.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: May 10, 2022
    Assignee: Oxford University Innovation Limited
    Inventors: Kamaljit Singh Chana, Parvinderpal Singh Sains
  • Patent number: 11307189
    Abstract: A sensor element (4) is used to apply a heating pulse to a pharmaceutical product (6). Chemical or structural information about the pharmaceutical product is determined by measuring a response of the sensor element (4) during the heating pulse. The response is dependent on a heat transfer characteristic of the pharmaceutical product (6).
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: April 19, 2022
    Inventors: Kamaljit Singh Chana, Saranjit Sihra, Pavinder Sagoo, Maxwell Adams, Vikram Sridhar
  • Publication number: 20220000535
    Abstract: Apparatus and methods for electrosurgery are disclosed. In one arrangement, an electrosurgical element and a control system are provided. The electrosurgical element is electrically driven in a first electrical driving mode. The first electrical driving mode is such as to cause heating of human or animal tissue by the electrosurgical element. The heating contributes to modification or cutting of tissue by the electrosurgical element. The electrosurgical element is electrically driven in a second electrical driving mode. An electrical response of the electrosurgical element is measured during the electrical driving of the electrosurgical element in the second electrical driving mode.
    Type: Application
    Filed: October 2, 2019
    Publication date: January 6, 2022
    Inventors: Kamaljit Singh CHANA, Parvinderpal Singh SAINS, Vikram SRIDHAR, Richard T. BRYAN
  • Publication number: 20210396695
    Abstract: The invention provides an apparatus and a method for testing a sample, with a sensor element (4) comprising a first conductor (301), a second conductor (302) and a third conductor (303) in series. The first conductor (301) is connected to the second conductor (302) at a first sensing junction (316A) and the second conductor (302) is connected to the third conductor (303) at a second sensing junction (316B). Heating is applied to a sample via Joule heating in the second conductor (303). A thermal response is measured (12) via a potential difference between the first conductor and the third conductor generated by the Seebeck effect.
    Type: Application
    Filed: November 15, 2019
    Publication date: December 23, 2021
    Inventors: Kamaljit Singh CHANA, Vikram SRIDHAR, Saleema KHIMJI
  • Publication number: 20210196478
    Abstract: The invention provides a targeting device suitable for use in removing a femoral implant from the surrounding tissue, wherein the device comprises: (A) an anterior guide member (1), (B) a posterior guide member (4), (C) an engagement member (7), (D) a first pair of parallel connector rails (509, 510), and (E) an adjustment system (13). When the anterior guide member and the posterior guide member are connected by the first pair of connector rails, via the engagement member, the angled channels of the anterior guide member and the posterior guide member converge in the direction of a distal end, with the convergence angle of the angled channels being in the range of from 2 to 6 degrees, such as from 2 to 5 degrees.
    Type: Application
    Filed: May 28, 2019
    Publication date: July 1, 2021
    Inventor: Gursharan Singh Chana
  • Publication number: 20210180502
    Abstract: An energy recovery system and a method of recovering energy are disclosed. In one arrangement, an exhaust gas conduit system guides a flow of exhaust gas generated by a combustion process. A heat exchange fluid circuit guides a flow of a heat exchange fluid. An electrical generator generates electrical power from the flow of heat exchange fluid. The heat exchange fluid circuit is configured so that heat is transferred from the exhaust gas to the heat exchange fluid while the exhaust gas is flowing through the exhaust gas conduit system.
    Type: Application
    Filed: November 2, 2018
    Publication date: June 17, 2021
    Inventors: Kamaljit Singh CHANA, Vikram SRIDHAR, Sunny Singh CHANA, Michael Joseph PEKRIS
  • Publication number: 20210153991
    Abstract: Methods of sensing a dental region are disclosed. In one arrangement, a sensor element is used to apply a heating pulse to the dental region. Chemical or structural information about the dental region is determined by measuring a response of the sensor element during the heating pulse. The response is dependent on heat transfer characteristics of the dental region.
    Type: Application
    Filed: June 12, 2018
    Publication date: May 27, 2021
    Inventors: Kamaljit Singh CHANA, Saranjit Singh SIHRA
  • Publication number: 20210140907
    Abstract: A probe comprises a resistive element configured to be brought into thermal contact with an entity to be sensed. A measurement system applies a plurality of heating pulses to the resistive element by driving an electrical current through the resistive element and measures an electrical response of the resistive element to the heating pulses in order to determine information about either or both of the composition and state of the entity. The measurement system generates an output signal using the measured electrical response, wherein the output signal is generated by progressively offsetting the measured electrical response such that, in the event of an average temperature of the resistive element changing between different heating pulses due to a drift in the average temperature of a portion of the entity being sensed, a variance over the plurality of heating pulses of a value of the output signal at a predetermined common reference point within each heating pulse is reduced.
    Type: Application
    Filed: June 15, 2018
    Publication date: May 13, 2021
    Inventors: Kamaljit Singh CHANA, Vikram SRIDHAR
  • Patent number: 10987115
    Abstract: A targeting kit comprises (i) a mounting arrangement for releasably mounting the targeting kit on an implant, (ii) first and second guide members having an elongate shape with a bore running along its longitudinal axis (iii) a holding arrangement for holding the first and second guide members, the holding arrangement being adjustable between a release condition, in which the positions of the first and second guide members are adjustable, and a holding condition, in which the first and second guide members are in a fixed position, and (iv) a bridging arrangement between the mounting arrangement and the first and second guide members, to space the first and second guide members with respect to the mounting arrangement, the bridging arrangement being adjustable between a release condition, in which the position of the mounting arrangement is adjustable, and a holding condition, in which the first and second guide members are fixedly spaced.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: April 27, 2021
    Inventor: Gursharan Singh Chana
  • Patent number: 10976277
    Abstract: The invention relates to detecting a composition of a sample or contamination in liquids by detecting corresponding changes in their thermal properties. In a disclosed arrangement, an apparatus is provided comprising a first probe element configured to provide a first surface in direct contact with the sample and a second surface that is not in direct contact with the sample. A measurement system measures a rate of heat transfer through the first surface. A processing unit analyses the measured rate of heat transfer in order to detect a heat transfer characteristic of the sample that is indicative of a composition of the sample.
    Type: Grant
    Filed: January 28, 2020
    Date of Patent: April 13, 2021
    Assignee: OXFORD UNIVERSITY INNOVATION LIMITED
    Inventors: Kamaljit Singh Chana, Jonathan Shamus Sullivan
  • Patent number: 10816509
    Abstract: Apparatus and methods for reactance measurements are disclosed. The apparatus and methods are particularly suitable for eddy current proximity sensors in turbo-machine assemblies. In one arrangement, there is provided an apparatus comprising a circuit for receiving a sensing component of a sensor. The circuit has a unit having fixed reactance. An electrical source is provided for driving an alternating current through the circuit. An analysis unit measures the phase of a signal in the circuit that is dependent on the reactance of the sensing component. A measure of the reactance of the sensing component is output based on the measured phase.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: October 27, 2020
    Assignee: OXFORD UNIVERSITY INNOVATION LIMITED
    Inventors: Kamaljit Singh Chana, Jonathan Shamus Sullivan
  • Publication number: 20200264150
    Abstract: A sensor element (4) is used to apply a heating pulse to a pharmaceutical product (6). Chemical or structural information about the pharmaceutical product is determined by measuring a response of the sensor element (4) during the heating pulse. The response is dependent on a heat transfer characteristic of the pharmaceutical product (6).
    Type: Application
    Filed: September 28, 2018
    Publication date: August 20, 2020
    Inventors: Kamaljit Singh CHANA, Saranjit SIHRA, Pavinder SAGOO, Maxwell ADAMS, Vikram SRIDHAR
  • Publication number: 20200225181
    Abstract: The invention relates to detecting a composition of a sample or contamination in liquids by detecting corresponding changes in their thermal properties. In a disclosed arrangement, an apparatus is provided comprising a first probe element configured to provide a first surface in direct contact with the sample and a second surface that is not in direct contact with the sample. A measurement system measures a rate of heat transfer through the first surface. A processing unit analyses the measured rate of heat transfer in order to detect a heat transfer characteristic of the sample that is indicative of a composition of the sample.
    Type: Application
    Filed: January 28, 2020
    Publication date: July 16, 2020
    Applicant: OXFORD UNIVERSITY INNOVATION LIMITED
    Inventors: Kamaljit Singh CHANA, Jonathan Shamus SULLIVAN
  • Patent number: 10585057
    Abstract: The invention relates to detecting a composition of a sample or contamination in liquids by detecting corresponding changes in their thermal properties. In a disclosed arrangement, an apparatus is provided comprising a first probe element configured to provide a first surface in direct contact with the sample and a second surface that is not in direct contact with the sample. A measurement system measures a rate of heat transfer through the first surface. A processing unit analyses the measured rate of heat transfer in order to detect a heat transfer characteristic of the sample that is indicative of a composition of the sample.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: March 10, 2020
    Assignee: OXFORD UNIVERSITY INNOVATION LIMITED
    Inventors: Kamaljit Singh Chana, Jonathan Shamus Sullivan