Patents by Inventor Bin Mi

Bin Mi 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: 8301262
    Abstract: Systems and methods for communicating with or powering implantable medical devices using a direct inductive/acoustic telemetry link are disclosed. An illustrative system includes an interrogator device located outside of the patient's body, an implantable medical device including an energy translator circuit adapted to convert inductive or RF signals received from the interrogator device into an acoustic signal for driving an acoustic transducer, and a remote device adapted to sense one or more parameters within the body.
    Type: Grant
    Filed: January 22, 2009
    Date of Patent: October 30, 2012
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Bin Mi, Abhijeet V. Chavan, Keith R. Maile
  • Publication number: 20120190992
    Abstract: Systems and methods provide for ambulatorily sensing pulmonary artery pressure from within a patient, and producing a pulmonary artery pressure measurement from the sensed pulmonary artery pressure. Power is ambulatorily provided within the patient to facilitate sensing of the pulmonary artery pressure and producing of the pulmonary artery pressure measurement. Acute pulmonary embolism is detected based on a change or rate of change in the pulmonary artery pressure measurement. An alert is preferably generated in response to detecting pulmonary embolism.
    Type: Application
    Filed: April 3, 2012
    Publication date: July 26, 2012
    Inventors: Wangcai Liao, Jeffrey Stahmann, Bin Mi, Yunlong Zhang
  • Patent number: 8204599
    Abstract: A system and a method of disposing a second sensor module overlying a first sensor module system is described. A first assembly including an expandable anchor and a sensor module is at least partially overlapped by a second assembly including an expandable anchor and a sensor module. If necessary or desired, the functions of the second sensor module can replace the functions of the first sensor module. The sensor module may include a blood pressure sensor.
    Type: Grant
    Filed: April 16, 2008
    Date of Patent: June 19, 2012
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Wangcai Liao, Bin Mi, Rodney W. Salo
  • Patent number: 8147415
    Abstract: Systems and methods provide for ambulatorily sensing pulmonary artery pressure from within a patient, and producing a pulmonary artery pressure measurement from the sensed pulmonary artery pressure. Power is ambulatorily provided within the patient to facilitate sensing of the pulmonary artery pressure and producing of the pulmonary artery pressure measurement. Acute pulmonary embolism is detected based on a change or rate of change in the pulmonary artery pressure measurement. An alert is preferably generated in response to detecting pulmonary embolism.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: April 3, 2012
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Wangcai Liao, Jeffrey Stahmann, Bin Mi, Yunlong Zhang
  • Patent number: 8068909
    Abstract: Embodiments of the invention are related to implantable devices including movement sensors and related methods for measuring cardiac performance, amongst other things. In an embodiment, the invention includes an implantable electrical stimulation lead. The electrical stimulation lead can include a lead body having a proximal end and a distal end and a sheath defining a central lumen. The lead body can further include an electrical conductor disposed within the central lumen of the sheath. The stimulation lead can further include a stimulation electrode positioned at the distal end of the lead body, the stimulation electrode in electrical communication with the electrical conductor. The electrical stimulation lead can include an flexion sensor coupled to the lead body, the movement sensor configured to generate a signal in response to movement of the lead body. In an embodiment, the invention includes a method of monitoring the condition of a heart failure patient.
    Type: Grant
    Filed: June 27, 2007
    Date of Patent: November 29, 2011
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Bin Mi, Yongxing Zhang, Yunlong Zhang, James O. Gilkerson
  • Publication number: 20110218594
    Abstract: A piezoelectric element within an external ultrasonic transducer assembly can be used for wireless communication of data between an implantable device and the external ultrasonic transducer assembly such as using ultrasonic energy coupled to a flexible portion of a housing of the transducer assembly. The flexible portion can be configured to contact skin of a body containing the implantable device. The transducer assembly can be configured to respectively transmit or receive ultrasonic energy using at least partially overlapping respective ranges of resonant frequencies.
    Type: Application
    Filed: March 2, 2011
    Publication date: September 8, 2011
    Inventors: Eyal Doron, Bin Mi, Abhi V. Chavan, Keith R. Maile
  • Publication number: 20110190669
    Abstract: Implantable medical devices including an ultrasonic transducer and methods of optimizing an ultrasonic transducer of an implantable medical device are disclosed. The implantable medical device can include a housing, an ultrasonic transducer disposed within an interior of the housing, and a limiting structure configured to constrain deformation of the ultrasonic transducer. The limiting structure can include a separate structure coupled to the housing, or can comprise a resonant portion of the housing itself. During operation, the ultrasonic transducer is configured to communicate at a frequency at or near a resonant frequency of the housing.
    Type: Application
    Filed: April 8, 2011
    Publication date: August 4, 2011
    Inventors: Bin Mi, Abhijeet V. Chavan, Keith R. Maile
  • Patent number: 7949396
    Abstract: An implantable medical device comprising a housing and an ultrasonic transducer having a communication frequency coupled to a portion of the housing. The housing resonates at the communication frequency, and a casing is coupled to the housing and disposed over the ultrasonic transducer. The casing is adapted to amplify the deformation of the ultrasonic transducer in a bending mode and transfer the bending moment to the housing. An implantable medical device comprising a housing having an upper portion and a lower portion. A first ultrasonic transducer is coupled to a first connection rod and is coaxial with the first connection rod. The first ultrasonic transducer and first connection rod are interposed between the upper and lower portions such that the first ultrasonic transducer is adapted to vibrate the upper and lower portions simultaneously. A method of optimizing an ultrasonic transducer and a housing of an implantable medical device.
    Type: Grant
    Filed: July 20, 2007
    Date of Patent: May 24, 2011
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Bin Mi, Abhijeet V. Chavan, Keith R. Maile
  • Patent number: 7912548
    Abstract: An implantable medical device comprising a housing and a limiting structure defining a resonant region in the housing. An acoustic transducer is connected to the limiting structure and extends into the resonant region so that the resonant region mechanically amplifies the deformation of the acoustic transducer at a resonant frequency. An implantable medical device comprising a housing and a limiting structure defining a resonant region in the housing. An acoustic transducer having the shape of a beam is mechanically coupled to the limiting structure and partially extends into the resonant region so that the resonant region mechanically amplifies the deformation of the acoustic transducer at a resonant frequency. An implantable medical device comprising a housing, an acoustic transducer coupled to the housing, and a means for mechanically amplifying the deformation of the acoustic transducer at a resonant frequency. The means defines a resonant region in the housing.
    Type: Grant
    Filed: July 20, 2007
    Date of Patent: March 22, 2011
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Bin Mi, Abhijeet V. Chavan, John H. Tangren
  • Publication number: 20110009746
    Abstract: A system includes a first implantable acoustic transducer, a second implantable transducer a memory circuit, and a processor. The first implantable acoustic transducer is configured to receive transmitted acoustic energy from a thorax region of a subject and the second implantable acoustic transducer is configured to transmit the acoustic energy to the thorax region. The processor is communicatively coupled to the first acoustic transducer, the second acoustic transducer, and the memory circuit. The processor includes a parameter module configured to measure a parameter of the received acoustic energy, and a trending module configured to trend the measured parameter and to provide an indication of pulmonary edema status of the subject using the parameter trend.
    Type: Application
    Filed: July 8, 2010
    Publication date: January 13, 2011
    Inventors: Binh C. Tran, Bin Mi, Yunlong Zhang
  • Publication number: 20100317929
    Abstract: Methods, systems, and apparatus for powering and/or recharging medical devices implanted within the body are described. An illustrative implantable medical device includes a housing having an internal cavity and a flexible anchor assembly that is coupled to the housing. The flexible anchor assembly includes a first electrical conductor, a second electrical conductor, and a piezoelectric layer that is disposed between the first and second electrical conductors and that is configured to displace in response to a physiologic force applied to the flexible anchor assembly and generate a voltage differential between the first and second electrical conductors. The implantable medical device includes power circuitry that converts the voltage differential between the first and second electrical conductors into an operating current for powering one or more components within the implantable medical device and/or for recharging a rechargeable power supply within the device.
    Type: Application
    Filed: May 6, 2010
    Publication date: December 16, 2010
    Inventors: Bin Mi, Lance E. Juffer, Keith R. Maile, Abhijeet V. Chavan, Thomas W. Piaget
  • Publication number: 20100317978
    Abstract: Methods, systems, and apparatus for powering and/or recharging medical devices implanted within the body are described. An illustrative implantable sensor for sensing one or more physiologic parameters within a body lumen includes a housing having an exterior wall that has an inner surface and an outer surface and that defines an internal cavity. A portion of the housing includes an electrically conductive material that functions as a first electrical conductor. A flexible piezoelectric layer is disposed adjacent to a portion of the exterior wall and a second electrical conductor is disposed adjacent to the piezoelectric layer. The piezoelectric layer is configured to displace in response to periodic pressure pulses within the body lumen and generate a voltage differential between the first and second electrical conductors.
    Type: Application
    Filed: May 6, 2010
    Publication date: December 16, 2010
    Inventors: Keith R. Maile, Abhijeet V. Chavan, Thomas W. Piaget, Bin Mi
  • Publication number: 20100317977
    Abstract: Methods, systems, and apparatus for powering and/or recharging medical devices implanted within the body are described. An illustrative power generation module disposable within the interior space of an implantable medical device includes a module body that defines an interior cavity as well as a flexible diaphragm that spans the interior cavity. The flexible diaphragm includes a first electrical conductor, a piezoelectric layer disposed adjacent to the first electrical conductor, and a second electrical conductor disposed adjacent to the piezoelectric layer. The piezoelectric layer is configured to displace within the interior cavity and generate a voltage differential between the first electrical conductor and the second electrical conductor.
    Type: Application
    Filed: May 6, 2010
    Publication date: December 16, 2010
    Inventors: Thomas W. Piaget, Bin Mi, Lance E. Juffer, Keith R. Maile, Abhijeet V. Chavan, Cheng Zhang
  • Publication number: 20100249865
    Abstract: Methods and systems for implantably determining a patient's anemia status and treating anemia are described. Blood viscosity is compared one or more thresholds to determine a patient's anemia status. Therapy, in the form of electrical stimulation therapy or administration of a pharmaceutical delivered to the patient's kidneys or hypothalamus is controlled based on the anemia status.
    Type: Application
    Filed: March 23, 2010
    Publication date: September 30, 2010
    Inventors: Yunlong Zhang, Bin Mi, John D. Hatlestad
  • Publication number: 20100152608
    Abstract: An implantable system for ambulatory monitoring of a high-risk heart failure patient includes a first pressure sensor implantable within an abdomen of the patient for sensing and generating an output representative of a baseline intra-abdominal pressure value of the patient and for chronically sensing and generating an output representative of an intra-abdominal pressure value of the patient at periodic intervals. At least one second implantable sensor is provided for sensing and generating an output representative of a second physiological parameter of the patient. Additionally, the system includes a processor for correlating the output of the first pressure sensor and the second physiologic sensor, and for comparing differences between the baseline intra-abdominal pressure value and subsequent intra-abdominal pressure values. The processor can reside in another implantable device or in an external device/system.
    Type: Application
    Filed: August 7, 2009
    Publication date: June 17, 2010
    Inventors: John D. HATLESTAD, Binh C. TRAN, Bin MI, Ronald W. HEIL, JR.
  • Publication number: 20100106028
    Abstract: Methods, systems, and apparatus for recharging medical devices implanted within the body are disclosed. An illustrative method of recharging an implanted medical device includes delivering a charging device to a location adjacent to the implanted medical device, activating a charging element coupled to the charging device and transmitting charging energy to a receiver of the implanted medical device, and charging the implanted medical device using the transmitted charging energy from the charging device.
    Type: Application
    Filed: October 26, 2009
    Publication date: April 29, 2010
    Inventors: Avi Penner, Eyal Doron, Jeffrey E. Stahmann, Keith R. Maile, Binh C. Tran, Wangcai Liao, Bin Mi, Paul J. Huelskamp
  • Publication number: 20100056931
    Abstract: A system and method sense a pressure signal in a pulmonary artery and compute a stroke volume and cardiac output. A pressure signal is received from an implantable pressure sensor disposed in a pulmonary artery. The pressure signal includes a systolic period and a diastolic period for determining a heart rate (HR) and a heart cycle. An iteratively-updating model can relate pressure signal and HR to a stroke volume (SV) and a cardiac output (CO). The model extracts a mean pulse pressure (MPP) from the PAP signal and receives a patient-specific vascular resistance model parameter and a patient-specific arterial compliance model parameter. CO can be calculated using the HR, the PAP signal, and the model. The vascular resistance model parameter and the arterial compliance model parameter are iteratively updated using the output of the model.
    Type: Application
    Filed: August 18, 2009
    Publication date: March 4, 2010
    Inventors: Leah Soffer, Haresh G. Sachanandani, Bin Mi, Yunlong Zhang
  • Publication number: 20100049269
    Abstract: An acoustic energy delivery system for delivering acoustic energy to an implantable medical device (“IMD”). The system includes an IMD having a power source and an energy delivery device. The energy delivery device includes a controller and an array of ultrasonic elements electrically coupled to the controller and configured to deliver acoustic energy to the IMD. Methods of delivering acoustic energy to an IMD are also disclosed.
    Type: Application
    Filed: November 3, 2009
    Publication date: February 25, 2010
    Inventors: Binh C. Tran, Robert S. Harguth, Bin Mi, Keith R. Maile
  • Patent number: 7634318
    Abstract: An acoustic energy delivery system for delivering acoustic energy to an implantable medical device (“IMD”). The system includes an IMD having a power source and an energy delivery device. The energy delivery device includes a controller and an array of ultrasonic elements electrically coupled to the controller and configured to deliver acoustic energy to the IMD. Methods of delivering acoustic energy to an IMD are also disclosed.
    Type: Grant
    Filed: May 28, 2008
    Date of Patent: December 15, 2009
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Binh C. Tran, Robert S. Harguth, Bin Mi, Keith R. Maile
  • Publication number: 20090281396
    Abstract: Systems and methods provide for ambulatorily sensing pulmonary artery pressure from within a patient, and producing a pulmonary artery pressure measurement from the sensed pulmonary artery pressure. Power is ambulatorily provided within the patient to facilitate sensing of the pulmonary artery pressure and producing of the pulmonary artery pressure measurement. Acute pulmonary embolism is detected based on a change or rate of change in the pulmonary artery pressure measurement. An alert is preferably generated in response to detecting pulmonary embolism.
    Type: Application
    Filed: March 30, 2009
    Publication date: November 12, 2009
    Inventors: Wangcai Liao, Jeffrey Stahmann, Bin Mi, Yunlong Zhang