Patents by Inventor Dung T. Ma

Dung T. Ma 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: 20230414411
    Abstract: A system and method for providing the intraocular pressure (IOP) in the anterior chamber of an eye during ocular surgery is provided. Determination of IOP may be performed using an algorithm that is a function of the static (inflow) pressure and/or dynamic (outflow) pressure. Static (inflow) pressure may be calculated as a function of one or more parameters, including bottle height, wound leakage, sleeve size, length of irrigation tubing and/or inner diameter of the irrigation tubing. Dynamic (outflow) pressure may be calculated as a function of one or more parameters, including aspiration rate, vacuum rate, tip size, compliance of tubing, length of tubing, and/or inner diameter of tubing. Additional parameters may also be considered in the algorithm such as patient eye level.
    Type: Application
    Filed: September 12, 2023
    Publication date: December 28, 2023
    Inventors: Deep Mehta, Hou Man Chong, Dung T. Ma
  • Patent number: 11446424
    Abstract: Variables of a surgical system are detected or received via one or more sensors to predict an intraocular pressure (IOP) and/or determine an IOP in real time during a surgical procedure. A notification to a surgeon or a target IOP is set and maintained as determined by Static IOP, dynamic IOP, and/or a total IOP combining both static and dynamic IOP of the anterior chamber of a patient's eye. Information collected about various components of the system are displayed on a user interface. The system uses the collected information to calculate the static IOP and/or dynamic IOP of the system, and the total IOP may be function of the static IOP and/or dynamic IOP measurements.
    Type: Grant
    Filed: October 4, 2018
    Date of Patent: September 20, 2022
    Assignee: Johnson & Johnson Surgical Vision, Inc.
    Inventors: Deep Mehta, Dung T. Ma, Sandra H. Keh
  • Patent number: 11383020
    Abstract: Variables of a surgical system are detected or received via one or more sensors to predict an intraocular pressure (IOP) and/or determine an IOP in real time during a surgical procedure. A notification to a surgeon or a target IOP is set and maintained as determined by Static IOP, dynamic IOP, and/or a total IOP combining both static and dynamic IOP of the anterior chamber of a patient's eye. Information collected about various components of the system are displayed on a user interface. The system uses the collected information to calculate the static IOP and/or dynamic IOP of the system, and the total IOP may be function of the static IOP and/or dynamic IOP measurements.
    Type: Grant
    Filed: October 4, 2018
    Date of Patent: July 12, 2022
    Assignee: Johnson & Johnson Surgical Vision, Inc.
    Inventors: Sandra H. Keh, Dung T. Ma, Deep Mehta
  • Publication number: 20210386927
    Abstract: A system for detecting intraocular pressure events during phacoemulsification surgery having a surgical console, a handpiece having a proximal end being communicatively connected to an irrigation line and an aspiration line; a first sensor in communication with the aspiration line or the irrigation line for providing a first measurement value; and a second sensor in communication with the aspiration line for providing a second measurement value; and wherein at least one characteristic of the irrigation fluid or aspiration fluid in their respective lines is changed in accordance with the difference between the first measurement value and the second measurement value. A system for calibrating patient eye level and wound leakage; detecting occlusion or post occlusion surge; determining BSS usage or remaining in a container; and detecting a fluid line abnormality using a first sensor and a second sensor in different configurations and differences in first and second measurement values.
    Type: Application
    Filed: August 26, 2021
    Publication date: December 16, 2021
    Inventors: Deep Mehta, Dung T. Ma
  • Publication number: 20210386928
    Abstract: A system for detecting intraocular pressure events during phacoemulsification surgery having a surgical console, a handpiece having a proximal end being communicatively connected to an irrigation line and an aspiration line; a first sensor in communication with the aspiration line or the irrigation line for providing a first measurement value; and a second sensor in communication with the aspiration line for providing a second measurement value; and wherein at least one characteristic of the irrigation fluid or aspiration fluid in their respective lines is changed in accordance with the difference between the first measurement value and the second measurement value. A system for calibrating patient eye level and wound leakage; detecting occlusion or post occlusion surge; determining BSS usage or remaining in a container; and detecting a fluid line abnormality using a first sensor and a second sensor in different configurations and differences in first and second measurement values.
    Type: Application
    Filed: August 26, 2021
    Publication date: December 16, 2021
    Inventors: Deep Mehta, Dung T. Ma
  • Patent number: 11071816
    Abstract: A method for maintaining anterior chamber intraoperative intraocular pressure (IOP) is provided by receiving and/or detecting variables of a surgical system and utilizing those variables to monitor intraoperative IOP. Determining an IOP in real time during a surgical procedure either provides a notification to an eye surgeon or allows a target IOP of the anterior chamber of a patient's eye to be set and maintained.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: July 27, 2021
    Assignee: Johnson & Johnson Surgical Vision, Inc.
    Inventors: Deep Mehta, Dung T. Ma
  • Publication number: 20190099546
    Abstract: Variables of a surgical system are detected or received via one or more sensors to predict an intraocular pressure (IOP) and/or determine an IOP in real time during a surgical procedure. A notification to a surgeon or a target IOP is set and maintained as determined by Static IOP, dynamic IOP, and/or a total IOP combining both static and dynamic IOP of the anterior chamber of a patient's eye. Information collected about various components of the system are displayed on a user interface. The system uses the collected information to calculate the static IOP and/or dynamic IOP of the system, and the total IOP may be function of the static IOP and/or dynamic IOP measurements.
    Type: Application
    Filed: October 4, 2018
    Publication date: April 4, 2019
    Inventors: Sandra H. Keh, Dung T. Ma, Deep Mehta
  • Publication number: 20190099548
    Abstract: A method for maintaining anterior chamber intraoperative intraocular pressure (IOP) is provided by receiving and/or detecting variables of a surgical system and utilizing those variables to monitor intraoperative IOP. Determining an IOP in real time during a surgical procedure either provides a notification to an eye surgeon or allows a target IOP of the anterior chamber of a patient's eye to be set and maintained.
    Type: Application
    Filed: October 4, 2017
    Publication date: April 4, 2019
    Inventors: Deep Mehta, Dung T. Ma
  • Publication number: 20190099529
    Abstract: Variables of a surgical system are detected or received via one or more sensors to predict an intraocular pressure (IOP) and/or determine an IOP in real time during a surgical procedure. A notification to a surgeon or a target IOP is set and maintained as determined by Static IOP, dynamic IOP, and/or a total IOP combining both static and dynamic IOP of the anterior chamber of a patient's eye. Information collected about various components of the system are displayed on a user interface. The system uses the collected information to calculate the static IOP and/or dynamic IOP of the system, and the total IOP may be function of the static IOP and/or dynamic IOP measurements.
    Type: Application
    Filed: October 4, 2018
    Publication date: April 4, 2019
    Inventors: Deep Mehta, Dung T. Ma, Sandra H. Keh
  • Publication number: 20180092774
    Abstract: A system and method for providing the intraocular pressure (IOP) in the anterior chamber of an eye during ocular surgery is provided. Determination of IOP may be performed using an algorithm that is a function of the static (inflow) pressure and/or dynamic (outflow) pressure. Static (inflow) pressure may be calculated as a function of one or more parameters, including bottle height, wound leakage, sleeve size, length of irrigation tubing and/or inner diameter of the irrigation tubing. Dynamic (outflow) pressure may be calculated as a function of one or more parameters, including aspiration rate, vacuum rate, tip size, compliance of tubing, length of tubing, and/or inner diameter of tubing. Additional parameters may also be considered in the algorithm such as patient eye level.
    Type: Application
    Filed: September 30, 2016
    Publication date: April 5, 2018
    Inventors: Deep Mehta, Hou Man Chong, Dung T. Ma
  • Patent number: 7636549
    Abstract: A method and apparatus for managing the establishment of a wireless connection between an instrument host and a non-fixed device is provided. The method comprises acquiring the non-fixed medical device address over a fixed wire by replacing the traditional wireless searching mechanism. The method also comprises providing an authentication mechanism between the instrument host and the non-fixed device, for example, across a wireless communications network.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: December 22, 2009
    Assignee: Abbott Medical Optics Inc.
    Inventors: Dung T. Ma, Hao V. Nguyen