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).

  • Publication number: 20180125348
    Abstract: Methods and apparatus for treating disorders of the ear, nose, throat or paranasal sinuses, including methods and apparatus for dilating ostia, passageways and other anatomical structures, endoscopic methods and apparatus for endoscopic visualization of structures within the ear, nose, throat or paranasal sinuses, navigation devices for use in conjunction with image guidance or navigation system and hand held devices having pistol type grips and other handpieces.
    Type: Application
    Filed: November 3, 2017
    Publication date: May 10, 2018
    Inventors: Joshua Makower, John Y. Chang, Ketan P. Muni, John H. Morriss, Hung V. Ha, Isaac J. Kim, Julia D. Vrany
  • Publication number: 20180110407
    Abstract: Methods and apparatus for treating disorders of the ear, nose, throat or paranasal sinuses, including methods and apparatus for dilating ostia, passageways and other anatomical structures, endoscopic methods and apparatus for endoscopic visualization of structures within the ear, nose, throat or paranasal sinuses, navigation devices for use in conjunction with image guidance or navigation system and hand held devices having pistol type grips and other handpieces.
    Type: Application
    Filed: October 27, 2017
    Publication date: April 26, 2018
    Inventors: Joshua Makower, John Y. Chang, Ketan P. Muni, John H. Morriss, Hung V. Ha, Isaac J. Kim, Julia D. Vrany
  • Publication number: 20180085563
    Abstract: Systems and methods for treating target tissues within the ears are disclosed. Systems include a tubular member defining a first lumen configured to deliver a solution containing a therapeutic agent into a space adjacent to a tympanic membrane in an ear canal; a support structure defining a second lumen separate from the first lumen; and an iontophoresis electrode disposed in the second lumen and configured to deliver a current to the solution to apply the therapeutic agent to the tympanic membrane.
    Type: Application
    Filed: December 4, 2017
    Publication date: March 29, 2018
    Applicant: Tusker Medical, Inc.
    Inventors: Anton G. CLIFFORD, Greg LIU, John H. MORRISS, Joshua MAKOWER, William M. FACTEAU, Eric GOLDFARB, John Y. CHANG
  • Patent number: 9913964
    Abstract: A method for dilating a stenotic region in an airway of a patient may include advancing a balloon catheter through the airway of the patient to position an inflatable balloon of the catheter within at least a portion of the stenotic region, maintaining a position of the catheter relative to the patient, and inflating the balloon of the catheter to dilate the stenotic region of the airway. A system for dilating a stenotic region in an airway of a patient may include a catheter shaft having an overall length of less than 70 cm, an inflatable balloon disposed along a distal portion of the catheter shaft, and a stylet.
    Type: Grant
    Filed: September 24, 2009
    Date of Patent: March 13, 2018
    Assignee: Acclarnet, Inc.
    Inventors: Ketan P. Muni, Hung V. Ha, Chi Nguyen, Randy S. Chan, John Y. Chang
  • Publication number: 20180021490
    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: September 29, 2017
    Publication date: January 25, 2018
    Inventors: John Y. Chang, Joshua Makower, Brendan M. Donohoe, Michele Torosis
  • Publication number: 20180001065
    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: July 17, 2017
    Publication date: January 4, 2018
    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
  • Publication number: 20180001002
    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. In one approach, the breast pump assembly includes a breast adapter and a receptacle configured to cup the breast adapter, and the breast adapter is removable from the receptacle.
    Type: Application
    Filed: September 19, 2017
    Publication date: January 4, 2018
    Inventors: Joshua Makower, John Y. Chang, Brendan M. Donohoe, Sharon Lam Wang, Michele Torosis, Earl Bright, II
  • Publication number: 20170348516
    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: June 15, 2017
    Publication date: December 7, 2017
    Inventors: John Y. Chang, Joshua Makower, Julia D. Vrany, Amrish J. Walke
  • Patent number: 9833601
    Abstract: Systems and methods for treating a patient having a head with a first ear and a second ear, function by mounting a support structure to the head of the patient; aligning the support structure with a target tissue in an ear canal of the first ear; stabilizing the support structure relative to the target tissue by injecting a material into the canal and hardening the material; and actuating a device while the device is supported by the support structure so that the device therapeutically remodels the target tissue of the first ear.
    Type: Grant
    Filed: October 9, 2012
    Date of Patent: December 5, 2017
    Assignee: TUSKER MEDICAL, INC.
    Inventors: Anton G. Clifford, Greg Liu, John H. Morriss, Joshua Makower, William M. Facteau, Eric Goldfarb, John Y. Chang
  • Patent number: 9814379
    Abstract: Methods and apparatus for treating disorders of the ear, nose, throat or paranasal sinuses, including methods and apparatus for dilating ostia, passageways and other anatomical structures, endoscopic methods and apparatus for endoscopic visualization of structures within the ear, nose, throat or paranasal sinuses, navigation devices for use in conjunction with image guidance or navigation system and hand held devices having pistol type grips and other handpieces.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: November 14, 2017
    Assignee: Acclarent, Inc.
    Inventors: Joshua Makower, John Y. Chang, Ketan P. Muni, John H. Morriss, Hung V. Ha, Isaac J. Kim, Julia D. Vrany
  • Publication number: 20170296387
    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: Application
    Filed: May 1, 2017
    Publication date: October 19, 2017
    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
  • Publication number: 20170238954
    Abstract: Devices, systems and methods wherein a dilator, such as a balloon or other expandable member, is positionable within the frontal sinus ostium and adjacent frontal recess and useable to dilate the frontal sinus ostium and substantially all of the frontal sinus recess without requiring repositioning and repeated re-expansion of the dilator. One balloon catheter device of the invention comprises a catheter body that is less than about 50 cm in length (and in some embodiments less than 25 cm in length and a semi-compliant or non-compliant balloon on the catheter body. The balloon may have a working length of about 12 mm to about 30 mm and a width at its widest point when fully inflated of about 2 mm to about 7 mm. Such balloon may be constructed to withstand inflation pressures of about 12 atmospheres. In some embodiments, the dilator is advanced through or over a guide (e.g., guidewire or guide catheter) that has a preformed shape.
    Type: Application
    Filed: March 22, 2017
    Publication date: August 24, 2017
    Inventors: Ketan P. Muni, Carlos F. Fernandez, Joshua Makower, John Y. Chang, William M. Facteau
  • Publication number: 20170231698
    Abstract: Devices and methods for visually confirming the positioning of a distal end portion of an illuminating device placed within a patient include inserting a distal end portion of an illuminating device internally into a patient, emitting light from the distal end portion of the illuminating device, observing transillumination resulting from the light emitted from the distal end portion of the illuminating device that occurs on an external surface of the patient, and correlating the location of the observed transillumination on the external surface of the patient with an internal location of the patient that underlies the location of observed transillumination, to confirm positioning of the distal end portion of the illuminating device.
    Type: Application
    Filed: February 27, 2017
    Publication date: August 17, 2017
    Inventors: Eric Goldfarb, John H. Morriss, John Y. Chang, William M. Facteau
  • Patent number: 9713700
    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: December 11, 2014
    Date of Patent: July 25, 2017
    Assignee: Acclarent, Inc.
    Inventors: John Y. Chang, Joshua Makower, Julia D. Vrany, Amrish Jayprakash Walke
  • Publication number: 20170197067
    Abstract: Devices, systems and methods useable for dilating the ostia of paranasal sinuses and/or other passageways within the ear, nose or throat. 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, an optional handle may be used to facilitate grasping or supporting a device of the present invention as well as another device (e.g., an endoscope) with a single hand.
    Type: Application
    Filed: January 27, 2017
    Publication date: July 13, 2017
    Inventors: Eric Goldfarb, John Y. Chang, William M. Facteau, Sivette Lam, Hung V. Ha, Isaac J. Kim, Ketan P. Muni
  • Publication number: 20170173232
    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: Application
    Filed: January 16, 2017
    Publication date: June 22, 2017
    Inventors: John Y. Chang, Joshua Makower, Brendan M. Donohoe, Michele Torosis
  • Publication number: 20170172485
    Abstract: Systems and methods for assessing milk volume changes within a breast are described. Also described are systems and methods for assessing volume changes in the stomach of an infant.
    Type: Application
    Filed: March 3, 2017
    Publication date: June 22, 2017
    Inventors: Joshua Makower, John Y. Chang, Theodore M. Bender, Brendan M. Donohoe
  • Publication number: 20170164965
    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: Application
    Filed: February 27, 2017
    Publication date: June 15, 2017
    Inventors: John Y. Chang, Joshua Makower
  • Patent number: 9636258
    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 27, 2015
    Date of Patent: May 2, 2017
    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: 9610428
    Abstract: Devices, systems and methods wherein a dilator, such as a balloon or other expandable member, is positionable within the frontal sinus ostium and adjacent frontal recess and useable to dilate the frontal sinus ostium and substantially all of the frontal sinus recess without requiring repositioning and repeated re-expansion of the dilator. One balloon catheter device of the invention comprises a catheter body that is less than about 50 cm in length (and in some embodiments less than 25 cm in length and a semi-compliant or non-compliant balloon on the catheter body. The balloon may have a working length of about 12 mm to about 30 mm and a width at its widest point when fully inflated of about 2 mm to about 7 mm. Such balloon may be constructed to withstand inflation pressures of about 12 atmospheres. In some embodiments, the dilator is advanced through or over a guide (e.g., guidewire or guide catheter) that has a preformed shape.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: April 4, 2017
    Assignee: Acclarent, Inc.
    Inventors: Ketan P. Muni, Carlos F. Fernandez, Joshua Makower, John Y. Chang, William M. Facteau