Patents by Inventor John Y. Chang

John Y. Chang 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: 10500380
    Abstract: Sinusitis and other disorders of the ear, nose and throat are diagnosed and/or treated using minimally invasive approaches with flexible or rigid instruments. Various methods and devices are used for remodeling or changing the shape, size or configuration of a sinus ostium or duct or other anatomical structure in the ear, nose or throat; implanting a device, cells or tissues; removing matter from the ear, nose or throat; delivering diagnostic or therapeutic substances or performing other diagnostic or therapeutic procedures. Introducing devices (e.g., guide catheters, tubes, guidewires, elongate probes, other elongate members) may be used to facilitate insertion of working devices (e.g. catheters e.g. balloon catheters, guidewires, tissue cutting or remodeling devices, devices for implanting elements like stents, electrosurgical devices, energy emitting devices, devices for delivering diagnostic or therapeutic agents, substance delivery implants, scopes etc.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: December 10, 2019
    Assignee: Acclarent, Inc.
    Inventors: John Y. Chang, Joshua Makower, Julia D. Vrany, John H. Morriss, Ketan P. Muni, Isaac J. Kim, Hung V. Ha, William M. Facteau, Amrish J. Walke
  • Patent number: 10500320
    Abstract: Systems and methods for pumping milk from a breast, wherein the milk is expressed from the breast under suction and milk is expulsed from the pumping mechanism to a collection container under positive pressure.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: December 10, 2019
    Assignee: ExploraMed NC7, Inc.
    Inventors: Joshua Makower, John Y Chang, Brendan M Donohoe, Sharon Lam Wang, Michele Torosis, Earl Bright, II
  • Patent number: 10492810
    Abstract: Sinusitis, enlarged nasal turbinates, tumors, infections, hearing disorders, allergic conditions, facial fractures and other disorders of the ear, nose and throat are diagnosed and/or treated using minimally invasive approaches and, in many cases, flexible catheters as opposed to instruments having rigid shafts. Various diagnostic procedures and devices are used to perform imaging studies, mucus flow studies, air/gas flow studies, anatomic dimension studies, endoscopic studies and transillumination studies. Access and occluder devices may be used to establish fluid tight seals in the anterior or posterior nasal cavities/nasopharynx and to facilitate insertion of working devices (e.g., scopes, guidewires, catheters, tissue cutting or remodeling devices, electrosurgical devices, energy emitting devices, devices for injecting diagnostic or therapeutic agents, devices for implanting devices such as stents, substance eluting devices, substance delivery implants, etc.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: December 3, 2019
    Assignee: Acclarent, Inc.
    Inventors: John Y. Chang, Joshua Makower
  • Publication number: 20190314620
    Abstract: Sinusitis and other disorders of the ear, nose and throat are diagnosed and/or treated using minimally invasive approaches with flexible or rigid instruments. Various methods and devices are used for remodeling or changing the shape, size or configuration of a sinus ostium or duct or other anatomical structure in the ear, nose or throat; implanting a device, cells or tissues; removing matter from the ear, nose or throat; delivering diagnostic or therapeutic substances or performing other diagnostic or therapeutic procedures. Introducing devices (e.g., guide catheters, tubes, guidewires, elongate probes, other elongate members) may be used to facilitate insertion of working devices (e.g. catheters e.g. balloon catheters, guidewires, tissue cutting or remodeling devices, devices for implanting elements like stents, electrosurgical devices, energy emitting devices, devices for delivering diagnostic or therapeutic agents, substance delivery implants, scopes etc.
    Type: Application
    Filed: May 29, 2019
    Publication date: October 17, 2019
    Inventors: John Y. Chang, Joshua Makower, Julia D. Vrany, Amrish J. Walke
  • Patent number: 10434228
    Abstract: Systems and methods for pumping milk from a breast, wherein the milk is expressed from the breast under suction and milk is expulsed from the pumping mechanism to a collection container under positive pressure.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: October 8, 2019
    Assignee: ExploraMed NC7, Inc.
    Inventors: John Y. Chang, Joshua Makower, Brendan M. Donohoe, Michele Torosis
  • Patent number: 10398816
    Abstract: Systems and methods for pumping milk from a breast responsive to a controller, wherein the milk is expressed from the breast under suction and milk is expulsed from the pumping mechanism to a collection container under positive pressure.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: September 3, 2019
    Assignee: ExploraMed NC7, Inc.
    Inventors: John Y Chang, Joshua Makower, Brendan M Donohoe, Michele Torosis
  • Patent number: 10376416
    Abstract: Methods and devices for providing a gas pathway between the nasopharynx and the Eustachian tube are provided. One device may include a lumen with a valve. A portion of the valve may be tethered to adjacent muscle. Another portion of the valve may be tethered to adjacent cartilage. When the muscle contracts the valve may open through movement of the tethers, and provide a gas pathway between the nasopharynx and the Eustachian tube.
    Type: Grant
    Filed: May 1, 2017
    Date of Patent: August 13, 2019
    Assignee: Acclarent, Inc.
    Inventors: Anton G. Clifford, Joshua Makower, John Y. Chang, John H. Morriss, Earl A. Bright, II, Eric Goldfarb, Julia D. Vrany, Ketan P. Muni, William E. Bolger, Joseph Roberson
  • Patent number: 10379155
    Abstract: In an example implementation, an integrated circuit (IC) includes: a plurality of transistors disposed in a plurality of locations on a die of the IC; conductors coupled to terminals of each of the plurality of transistors; a digital-to-analog converter (DAC), coupled to the conductors, to drive voltage signals to the plurality of transistors in response to a digital input; and an analog-to-digital converter (ADC), coupled to at least a portion of the conductors, to generate samples in response to current signals induced in the plurality of transistors in response to the voltage signals, the samples being indicative of at least one electrostatic characteristic for the plurality of transistors.
    Type: Grant
    Filed: October 2, 2014
    Date of Patent: August 13, 2019
    Assignee: XILINX, INC.
    Inventors: Ping-Chin Yeh, John K. Jennings, Rhesa Nathanael, Nui Chong, Cheang-Whang Chang, Daniel Y Chung
  • Patent number: 10382563
    Abstract: A method, computer program product, and a device for establishing a direct communications connection between gateways of two computing systems includes a processor(s) of a first system receiving configuration instructions in a generic format and translating the configuration instructions into a first set of gateway configuration commands that are in a format compatible with a first gateway of the first system. The processor(s) executes the first set to configure the first gateway. The processor(s) transmits, via a communication protocol, the configuration instructions, to a program(s) of a second computing systems, the program(s) translates the configuration instructions into a second set of gateway configuration commands, in a format compatible with the second gateway, and executes the second set to configure the second gateway. The processor(s) establishes a direct communications connection between the first gateway and the second gateway, based on the configurations matching.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: August 13, 2019
    Assignee: International Business Machines Corporation
    Inventors: Messaoud Benantar, David Y. Chang, John Y. Chang, Vishwanath Venkataramappa
  • Publication number: 20190175413
    Abstract: An apparatus comprises a shaft, an expandable dilator, and at least one ventilation pathway. The shaft defines a longitudinal axis and comprises a distal and proximal ends with at least one shaft lumen. The expandable dilator comprises body with its own proximal and distal ends. The body is configured to transition between a contracted state and an expanded state. The body is configured to dilate a Eustachian tube of a patient in the expanded state. The at least one ventilation pathway is configured to provide ventilation from the distal end of the body to the proximal end of the body when the body is in the expanded state. In some examples, the ventilation pathway comprises a set of transversely oriented vent openings formed through the shaft. In some other examples, the ventilation pathway comprises a space defined between one or more radially outwardly protruding features of the expandable dilator.
    Type: Application
    Filed: December 3, 2018
    Publication date: June 13, 2019
    Inventors: Peter F. Campbell, Daniel T. Harfe, Hung V. Ha, Ketan P. Muni, Andy Nguyen, Sivette Lam, John Y. Chang, Eric Goldfarb
  • Publication number: 20190167410
    Abstract: Methods and devices for relieving stenoses in, or otherwise improving blood flow through, body lumens. Although applicable in a variety of different body lumens, the methods and devices of this invention are specifically useable for relieving stenoses in, or otherwise improving blood flow through, veins which drain blood from the brain for treatment of multiple sclerosis or other neurodegenerative disorders that are caused, triggered or exacerbated by venous occlusion or venous insufficiency.
    Type: Application
    Filed: February 1, 2019
    Publication date: June 6, 2019
    Inventors: Joshua Makower, Earl A. Bright, II, Theodore M. Bender, Joseph Cantanese, III, John Y. Chang, Thomas King, Clinton Slone, Theodore C. Lamson, Aziz Imraan
  • Publication number: 20190117245
    Abstract: A dilation catheter device and system for dilating an opening in a paranasal sinus and/or other passageways within the ear, nose or throat is disclosed. A dilation catheter device and system is constructed in a manner that facilitates ease of use by the operator and, in at least some cases, allows the dilation procedure to be performed by a single operator. Additionally, the dilation catheter device and system may be useable in conjunction with an endoscope and/or a fluoroscope to provide for easy manipulation and positioning of the devices and real time visualization of the entire procedure or selected portions thereof. In some embodiments, shaft markers are disposed on a shaft of the dilation catheter and have a light color to contrast with a dark color of the dilation catheter shaft. The high contrast between the markers and catheter shaft allows for easy viewing of the markers in low light and operation conditions.
    Type: Application
    Filed: August 21, 2018
    Publication date: April 25, 2019
    Inventors: Eric Goldfarb, John Y. Chang, William M. Facteau, Sivette Lam, Hung V. Ha, Isaac J. Kim, Ketan P. Muni
  • Patent number: 10258776
    Abstract: Systems and methods for treating target tissues within the ears are disclosed. Systems include a device including a cutting edge configured to form an incision in a tympanic membrane, a pressure equalization tube positionable within an interior space of the device in a compressed configuration and configured to expand into an expanded configuration when released from the interior space, and an elongate positioning element configured to release the pressure equalization tube from the interior space such that the pressure equalization tube is deployed in the incision formed in the tympanic membrane.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: April 16, 2019
    Assignee: Tusker Medical, Inc.
    Inventors: Anton G. Clifford, Greg Liu, John H. Morriss, Joshua Makower, William M. Facteau, Eric Goldfarb, John Y. Chang
  • Publication number: 20190105480
    Abstract: Balloon catheter, guide catheter and method for dilating openings in paranasal sinuses. A non-removable guide member (e.g., guidewire) extends from the distal end of the balloon catheter. The non-removable guide member initially passes through the opening of the paranasal sinus and is followed by the catheter body on which the balloon is mounted. The balloon is then inflated causing dilation of the opening of the paranasal sinus. In some embodiments, the non-removable guide member may be shapeable so that the operator may place the non-removable guide member in a desired shape prior to insertion of the balloon catheter. In some embodiments, the length of the non-removable guide member may be adjustable such that the operator may adjust the length of the non-removable guide member prior to insertion of the balloon catheter.
    Type: Application
    Filed: October 10, 2018
    Publication date: April 11, 2019
    Inventors: Philip C. Evard, Ketan P. Muni, John H. Morriss, John Y. Chang
  • Publication number: 20190054220
    Abstract: Systems and methods for pumping milk from a breast responsive to a controller, wherein the milk is expressed from the breast under suction and milk is expulsed from the pumping mechanism to a collection container under positive pressure.
    Type: Application
    Filed: October 22, 2018
    Publication date: February 21, 2019
    Inventors: John Y. Chang, Joshua Makower, Brendan M. Donohoe, Michele Torosis
  • Patent number: 10206821
    Abstract: An apparatus comprises a shaft, an expandable dilator, and at least one ventilation pathway. The shaft defines a longitudinal axis and comprises a distal and proximal ends with at least one shaft lumen. The expandable dilator comprises body with its own proximal and distal ends. The body is configured to transition between a contracted state and an expanded state. The body is configured to dilate a Eustachian tube of a patient in the expanded state. The at least one ventilation pathway is configured to provide ventilation from the distal end of the body to the proximal end of the body when the body is in the expanded state. In some examples, the ventilation pathway comprises a set of transversely oriented vent openings formed through the shaft. In some other examples, the ventilation pathway comprises a space defined between one or more radially outwardly protruding features of the expandable dilator.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: February 19, 2019
    Assignee: Acclarent, Inc.
    Inventors: Peter F. Campbell, Daniel T. Harfe, Hung V. Ha, Ketan P. Muni, Andy Nguyen, Sivette Lam, John Y. Chang, Eric Goldfarb
  • Patent number: 10124154
    Abstract: Balloon catheter, guide catheter and method for dilating openings in paranasal sinuses. A non-removable guide member (e.g., guidewire) extends from the distal end of the balloon catheter. The non-removable guide member initially passes through the opening of the paranasal sinus and is followed by the catheter body on which the balloon is mounted. The balloon is then inflated causing dilation of the opening of the paranasal sinus. In some embodiments, the non-removable guide member may be shapeable so that the operator may place the non-removable guide member in a desired shape prior to insertion of the balloon catheter. In some embodiments, the length of the non-removable guide member may be adjustable such that the operator may adjust the length of the non-removable guide member prior to insertion of the balloon catheter.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: November 13, 2018
    Assignee: Acclarent, Inc.
    Inventors: Philip C. Evard, Ketan P. Muni, John H. Morriss, John Y Chang
  • Publication number: 20180304059
    Abstract: Systems and methods for treating target tissues within the ears are disclosed. Systems include a device including a cutting edge configured to form an incision in a tympanic membrane, a pressure equalization tube positionable within an interior space of the device in a compressed configuration and configured to expand into an expanded configuration when released from the interior space, and an elongate positioning element configured to release the pressure equalization tube from the interior space such that the pressure equalization tube is deployed in the incision formed in the tympanic membrane.
    Type: Application
    Filed: June 25, 2018
    Publication date: October 25, 2018
    Applicant: Tusker Medical, Inc.
    Inventors: Anton G. CLIFFORD, Greg LIU, John H. MORRISS, Joshua MAKOWER, William M. FACTEAU, Eric GOLDFARB, John Y. CHANG
  • Publication number: 20180296236
    Abstract: A medical device for the treatment of a sinus opening includes a handle, a grooming sheath, a rail, a guide wire, a balloon catheter and a balloon catheter movement mechanism. The handle has a proximal end, a distal end and a longitudinal axis along the length of the handle. The grooming sheath has a distal end and a proximal end with the proximal end of the grooming sheath being attached to the distal end of the handle. The rail has a distal end and a proximal end and disposed partially within the grooming sheath to define an annular lumen is between the rail and the grooming sheath. The guide wire operatively extends from the distal end of the rail and the balloon catheter is disposed at least partially in the handle and annular lumen.
    Type: Application
    Filed: June 25, 2018
    Publication date: October 18, 2018
    Inventors: Eric A. Goldfarb, Mina W.B Chow, John W. White, John Y. Chang, Mei Y. Pader, Jessica M. Liberatore, Radit Tantisira, Serena Swei Loh, Joshua Makower, Hung Vo, Isidro M. Gandionco, Michael J. Gottesman
  • Patent number: 10098652
    Abstract: A dilation catheter device and system for dilating an opening in a paranasal sinus and/or other passageways within the ear, nose or throat is disclosed. A dilation catheter device and system is constructed in a manner that facilitates ease of use by the operator and, in at least some cases, allows the dilation procedure to be performed by a single operator. Additionally, the dilation catheter device and system may be useable in conjunction with an endoscope and/or a fluoroscope to provide for easy manipulation and positioning of the devices and real time visualization of the entire procedure or selected portions thereof. In some embodiments, shaft markers are disposed on a shaft of the dilation catheter and have a light color to contrast with a dark color of the dilation catheter shaft. The high contrast between the markers and catheter shaft allows for easy viewing of the markers in low light and operation conditions.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: October 16, 2018
    Assignee: Acclarent, Inc.
    Inventors: Eric Goldfarb, John Y. Chang, William M. Facteau, Sivette Lam, Hung V. Ha, Isaac J. Kim, Ketan P. Muni