Patents by Inventor Jimmy Jian-min Mao

Jimmy Jian-min Mao 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: 11452471
    Abstract: A retractor has an oximeter sensor at its tip, which allows measuring of oxygen saturation of a tissue being retracted by the retractor. The tip includes one or more openings for at least one source and detector. A specific implementation is a spinal nerve root retractor with an oximeter sensor.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: September 27, 2022
    Assignee: ViOptix, Inc.
    Inventors: Jimmy Jian-min Mao, Robert E. Lash
  • Patent number: 11432763
    Abstract: A method differentiates a blood vessel from a nonvascular tissue during a minimally invasive surgery using a device. A device may be any penetration sensor device, such as a dilator sensor device, a hollow needle sensor device, or a trocar sensor device, which penetrates the skin and subcutaneous layers to reach a target location inside the body. The penetration sensor device includes a sensor probe which can make optical measurements to determine various parameters of the tissue at the tip of the sensor probe. These parameters may include an optical signal level returned from tissue contacting the tip of the sensor probe, an oxygen saturation level of the tissue, a total hemoglobin concentration, a blood flow, and a pulse. Based on these parameters, the presence or absence of a blood vessel at the tip of the penetration sensor device can be determined while the device travels towards the target location for surgery.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: September 6, 2022
    Assignee: ViOptix, Inc.
    Inventors: Robert E. Lash, Jimmy Jian-min Mao
  • Patent number: 11375925
    Abstract: A sensor probe has a connector and the connector's corresponding receptacle on a console have security mechanisms that ensure that the connector and the receptacle are properly connected and mated. The connector and receptacle can have physical security features that block insertion of the connector into the receptacle if they are not aligned in a proper orientation. The console can also include a software security feature that allows optical measurements from the sensor probe only if the connector of the sensor probe and receptacle on the console are connected properly. An adapter can also be used to convert a conventional receptacle mounted on a console into a receptacle with security features.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: July 5, 2022
    Assignee: ViOptix, Inc.
    Inventors: Jimmy Jian-min Mao, Robert E. Lash
  • Publication number: 20210076997
    Abstract: A surgical elevator has an oximeter sensor at its tip, which allows measuring of oxygen saturation of a tissue.
    Type: Application
    Filed: December 1, 2020
    Publication date: March 18, 2021
    Inventors: Jimmy Jian-min Mao, Robert E. Lash
  • Publication number: 20210076996
    Abstract: A surgical elevator has an oximeter sensor at its tip, which allows measuring of oxygen saturation of a tissue.
    Type: Application
    Filed: December 1, 2020
    Publication date: March 18, 2021
    Inventors: Jimmy Jian-min Mao, Robert E. Lash
  • Patent number: 10905332
    Abstract: A bone oximeter probe includes an elongated member and a sensor head at an end of the elongated member to make measurements for a bone. The measurements can indicate the viability or nonviability of the bone. In an implementation, the probe is advanced through an incision in soft tissue, towards the underlying bone, and positioned so that the sensor head faces the bone to be measured. Optical signals are sent from the sensor head and into the bone. The bone reflects some of the optical signals which are then detected so that measurements for the bone can be made. Some of these measurements include an oxygen saturation level value, and a total hemoglobin concentration value of the bone.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: February 2, 2021
    Assignee: ViOptix, Inc.
    Inventors: Jimmy Jian-Min Mao, Robert E. Lash
  • Patent number: 10849535
    Abstract: A surgical elevator has an oximeter sensor at its tip, which allows measuring of oxygen saturation of a tissue.
    Type: Grant
    Filed: August 19, 2008
    Date of Patent: December 1, 2020
    Assignee: ViOptix, Inc.
    Inventors: Jimmy Jian-min Mao, Robert E. Lash
  • Patent number: 10835227
    Abstract: A retractor system includes a retractor with an oximeter sensor at its tip and a force sensor coupled to the retractor. The retractor system also includes a system unit which can send signals to and receive signals from the oximeter sensor via optical fibers. The oximeter sensor measures oxygen saturation of a tissue being retracted by the retractor, and the force sensor measures an amount of force that is applied to the retracted tissue by the tip of the retractor. Another retractor system has a closed loop control arrangement with a positioning mechanism which moves the retractor based on measurements of the sensors.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: November 17, 2020
    Assignee: ViOptix, Inc.
    Inventors: Larry C. Heaton, II, Alex Keller, Robert E. Lash, Jimmy Jian-min Mao
  • Patent number: 10709367
    Abstract: An oximeter measures oxygen saturation for two or more different tissue depths and shows these results on a screen. A probe of the oximeter has multiple different distances between source and detector sensors. One probe implementation has fixed sensor positions. Other implementations include sensors on a moveable platform or openings to accept sensors, which allow a user to vary a distance between sensors.
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: July 14, 2020
    Assignee: ViOptix, Inc.
    Inventors: Larry C. Heaton, II, Robert E. Lash, Jimmy Jian-min Mao
  • Patent number: 10675013
    Abstract: A retractor system with a closed loop control includes a retractor having one or more sensors, which measure parameters associated with a retracted tissue. The system further includes a positioning mechanism connected to the retractor and a controller which receives feedback signals from the sensors. Based on the feedback signals from the sensors, the retractor is actuated by the positioning mechanism so that the tissue can be retracted while maintaining the parameters associated with the retracted tissue above a threshold level or within a desired range. Another retractor system includes a retractor with a force sensor and at least one additional sensor, which can be used without a closed loop control arrangement.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: June 9, 2020
    Assignee: ViOptix, Inc.
    Inventors: Larry C. Heaton, II, Alex Keller, Robert E. Lash, Jimmy Jian-min Mao
  • Patent number: 10674947
    Abstract: Devices and systems have a sensor probe configured to measure tissue oxygen saturation in the intestine or mesentery. The devices and systems can determine the oxygenation state of the entire thickness of the intestine or mesentery. Thus, embodiments of the invention can be applied in diagnosing intestinal ischemia in a patient, as well as in monitoring tissue oxygen saturation of the intestine or mesentery during or after a surgical procedure.
    Type: Grant
    Filed: May 17, 2016
    Date of Patent: June 9, 2020
    Assignee: ViOptix, Inc.
    Inventors: Larry C. Heaton, II, Robert E. Lash, Jimmy Jian-min Mao
  • Patent number: 10667721
    Abstract: Devices detect and assist in the avoidance of blood vessels during a surgical procedure—to avoid rupturing these blood vessels. Devices may be any penetration sensor device (such as a dilator sensor device, hollow needle sensor device, or trocar sensor device) that penetrates the skin and subcutaneous layers to reach a target location inside the body. The device includes a sensor probe which can make optical measurements to determine various parameters of the tissue at the tip of the sensor probe. These parameters may include an optical signal level returned from tissue contacting the tip of the sensor probe, an oxygen saturation level of the tissue, a total hemoglobin concentration, a blood flow, and a pulse. Based on these parameters, the presence or absence of a blood vessel at the tip of the device can be determined while the device travels towards the target location for surgery.
    Type: Grant
    Filed: January 2, 2018
    Date of Patent: June 2, 2020
    Assignee: ViOptix, Inc.
    Inventors: Robert E. Lash, Jimmy Jian-min Mao
  • Publication number: 20200155051
    Abstract: A device includes source and detector sensors. In a specific implementation, the device has two near detectors, two far detectors, and two sources. The two near detectors are arranged closer to the two sources than the two far detectors. A light-diffusing layer covers the two near detectors. The device may be part of a medical device that is used to monitor or measure oxygen saturation levels in a tissue. In a specific implementation, light is transmitted into the tissue and received by the detectors. An attenuation coefficient is first calculated for a shallow layer of tissue. The attenuation coefficient is then used to calculate an attenuation coefficient for a deep layer of tissue.
    Type: Application
    Filed: January 21, 2020
    Publication date: May 21, 2020
    Inventors: Jimmy Jian-min Mao, Robert E. Lash
  • Patent number: 10548526
    Abstract: Methods and apparatus are used to assess the viability of tissue such as flap tissue. According to one aspect of the present invention, a method for assessing the viability of flap tissue includes obtaining an oxygen saturation level associated with a first location on the flap tissue, determining whether the oxygen saturation level is less than a first level, and identifying the first location as having a poor blood supply if the oxygen saturation level is less than the first level.
    Type: Grant
    Filed: January 6, 2014
    Date of Patent: February 4, 2020
    Assignee: ViOptix, Inc.
    Inventors: Jimmy Jian-min Mao, Robert E. Lash
  • Patent number: 10537271
    Abstract: A device includes source and detector sensors. In a specific implementation, the device has two near detectors, two far detectors, and two sources. The two near detectors are arranged closer to the two sources than the two far detectors. A light-diffusing layer covers the two near detectors. The device may be part of a medical device that is used to monitor or measure oxygen saturation levels in a tissue. In a specific implementation, light is transmitted into the tissue and received by the detectors. An attenuation coefficient is first calculated for a shallow layer of tissue. The attenuation coefficient is then used to calculate an attenuation coefficient for a deep layer of tissue.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: January 21, 2020
    Assignee: ViOptix, Inc.
    Inventors: Jimmy Jian-min Mao, Robert E. Lash
  • Publication number: 20190336056
    Abstract: A flexible sensor pad includes a cavity to hold a sensor unit with an attached cable. According to one aspect of the present invention, a light-shielding layer is coupled to a bottom surface of the sensor pad, surrounds the sensor unit, and extends past two sides of the sensor pad. A transparent adhesive layer is coupled to the light-shielding layer and extends past two sides of the light-shielding layer. Another light shielding layer is coupled to a top surface of the sensor pad and covers the sensor unit. The cable divides the sensor pad into a first side and a second side which are mirror images of each other.
    Type: Application
    Filed: July 2, 2019
    Publication date: November 7, 2019
    Inventors: Jimmy Jian-min Mao, Robert E. Lash
  • Patent number: 10456079
    Abstract: A method differentiates a blood vessel from a nonvascular tissue during a minimally invasive surgery using a device. A device may be any penetration sensor device, such as a dilator sensor device, a hollow needle sensor device, or a trocar sensor device, which penetrates the skin and subcutaneous layers to reach a target location inside the body. The penetration sensor device includes a sensor probe which can make optical measurements to determine various parameters of the tissue at the tip of the sensor probe. These parameters may include an optical signal level returned from tissue contacting the tip of the sensor probe, an oxygen saturation level of the tissue, a total hemoglobin concentration, a blood flow, and a pulse. Based on these parameters, the presence or absence of a blood vessel at the tip of the penetration sensor device can be determined while the device travels towards the target location for surgery.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: October 29, 2019
    Assignee: ViOptix, Inc.
    Inventors: Robert E. Lash, Jimmy Jian-min Mao
  • Patent number: 10368749
    Abstract: Devices and systems have a sensor probe configured to measure tissue oxygen saturation in the intestine or mesentery. The devices and systems can determine the oxygenation state of the entire thickness of the intestine or mesentery. Embodiments of the invention also include methods for inducing a temporary ischemic period in an intestine or mesentery tissue and analyzing changes in oxygen saturation of the tissue during the temporary ischemic period or during a recovery phase. The devices, systems, and methods can be applied in diagnosing intestinal ischemia in a patient, as well as in monitoring tissue oxygen saturation of the intestine or mesentery during or after a surgical procedure.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: August 6, 2019
    Assignee: ViOptix, Inc.
    Inventors: Larry C. Heaton, II, Robert E. Lash, Jimmy Jian-min Mao
  • Patent number: 10357190
    Abstract: A sensor probe has a connector and the connector's corresponding receptacle on a console have security mechanisms that ensure that the connector and the receptacle are properly connected and mated. The connector and receptacle can have physical security features that block insertion of the connector into the receptacle if they are not aligned in a proper orientation. The console can also include a software security feature that allows optical measurements from the sensor probe only if the connector of the sensor probe and receptacle on the console are connected properly. An adapter can also be used to convert a conventional receptacle mounted on a console into a receptacle with security features.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: July 23, 2019
    Assignee: ViOptix, Inc.
    Inventors: Jimmy Jian-min Mao, Robert E. Lash
  • Patent number: 10335070
    Abstract: Devices and systems have a sensor probe configured to measure tissue oxygen saturation in the intestine or mesentery. The devices and systems can determine the oxygenation state of the entire thickness of the intestine or mesentery. Embodiments of the invention also include methods for inducing a temporary ischemic period in an intestine or mesentery tissue and analyzing changes in oxygen saturation of the tissue during the temporary ischemic period or during a recovery phase. The devices, systems, and methods can be applied in diagnosing intestinal ischemia in a patient, as well as in monitoring tissue oxygen saturation of the intestine or mesentery during or after a surgical procedure.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: July 2, 2019
    Assignee: ViOptix, Inc.
    Inventors: Larry C. Heaton, II, Robert E. Lash, Jimmy Jian-min Mao