Patents by Inventor Albert K. Chin

Albert K. Chin 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: 20230389918
    Abstract: A medical device for approximating and securing tissue without requiring knots includes a lock-head, a strap section, distal protuberance, and a leader section. The device also includes a transition section between the leader and the strap section and a stiffening section proximal to the protuberance. The leader section is used to draw the strap section into the body through small apertures in tissue and the transition section provides a gradual transition in stiffness and size between the leader and the strap section.
    Type: Application
    Filed: August 14, 2023
    Publication date: December 7, 2023
    Inventors: Thomas A. Kramer, Albert K. Chin, Gannon Borchers, Peter Bugos, Andrew Kwok, Steven Ledbetter
  • Patent number: 11793508
    Abstract: A medical device for approximating and securing tissue without requiring knots includes a lock-head, a strap section, distal protuberance, and a leader section. The device also includes a transition section between the leader and the strap section and a stiffening section proximal to the protuberance. The leader section is used to draw the strap section into the body through small apertures in tissue and the transition section provides a gradual transition in stiffness and size between the leader and the strap section.
    Type: Grant
    Filed: September 28, 2020
    Date of Patent: October 24, 2023
    Assignee: TAS Medical, Inc.
    Inventors: Thomas A. Kramer, Albert K. Chin, Gannon Borchers, Peter Bugos, Andrew Kwok, Steven Ledbetter
  • Publication number: 20230309812
    Abstract: A falloposcope intended for use with a hysteroscope to access, image, and collect samples from a patient's fallopian tube includes a cannula having an angled tip oriented to engage a fallopian tube os when the cannula is transcervically introduced to a patient's uterus through the hysteroscope. The catheter has a distal viewing tip configured to be advanced from a distal end of the cannula into the patient's uterus through a cervical os. A viewing chamber has a wide proximal end attached to the distal viewing tip of the catheter, and the viewing chamber is at least partially transparent and typically tapers in a distal direction to provide a clear viewing zone for the endoscope as well as atraumatic advancement into the fallopian tube.
    Type: Application
    Filed: May 25, 2021
    Publication date: October 5, 2023
    Applicant: FemDX Medsystems, Inc.
    Inventors: Albert K. Chin, Pei-Jie Cao
  • Publication number: 20230263547
    Abstract: A laparoscopic instrument includes fluid carrying channels incorporated into lateral aspects of jaws of the instrument and extending to outlets adjacent distal tips of the jaws, fluid carrying channels incorporated into a shaft of the instrument, and flexible fluid carrying channels connecting the distal ends of the shaft channels with the proximal end of respective jaw channels. An actuator on the device handle controls either delivery of fluid jets emanating lateral to tissue grasped between the instrument jaws or suction from the distal tips of the jaws to remove fluid in the vicinity of the jaws. The fluid jets perform atraumatic tissue dissection lateral to the structures grasped by the jaws, while the grasping jaws provide counter traction while conducting soft tissue hydro-dissection, by stabilizing the tissue in a direction opposite to the force exerted by the hydro-dissection fluid jets.
    Type: Application
    Filed: December 27, 2022
    Publication date: August 24, 2023
    Inventors: Dinesh Vyas, Albert K. Chin
  • Publication number: 20230233228
    Abstract: Systems, devices, and methods for providing access to the heart. The system includes an intracardiac access device comprising an elongate member having a channel extending between a distal end and a proximal end thereof. The intracardiac access device is configured to be advanced through an extrapericardial penetration in the left atrial wall without penetrating the pericardium of the heart. An optional procedural device is configured to be advanced through the channel of the intracardiac access device into an internal chamber of the heart and configured to perform a surgical procedure in the internal chamber of the heart. A working channel of an optional suprasternal access device is configured to facilitate access of the intracardiac access device into the body of the patient by providing a path from a suprasternal opening to a position adjacent the roof of the left atrium.
    Type: Application
    Filed: March 24, 2023
    Publication date: July 27, 2023
    Applicant: MITRx. Inc.
    Inventors: Murali DHARAN, Albert K. CHIN, Jeffry J. GRAINGER
  • Publication number: 20230225866
    Abstract: A venous valve prosthetic implant for treatment of venous disease may include an expandable anchoring frame, a valve seat attached to the anchoring frame, a ball retention member attached to the anchoring frame, and a ball disposed within the lumen of the anchoring frame, between the valve seat and the ball retention member. The anchoring frame may include a first end, a second end, and a middle valve portion, where the middle valve portion expands to a smaller diameter than a diameter of either the first end or the second end. The ball may move back and forth within the middle valve portion, between a fully open position and a fully closed position.
    Type: Application
    Filed: January 6, 2023
    Publication date: July 20, 2023
    Inventors: Albert K. Chin, Austin Walker, Thomas A. Kramer
  • Publication number: 20230200780
    Abstract: An interventional hysteroscope includes a shaft, an optical imaging element, an ultrasonic imaging element and a treatment element, such as an ablation needle. The shaft has a distal end, a proximal end, and a longitudinal axis therebetween, and the optical imaging element is disposed at the distal end of the shaft. The ultrasonic imaging element is also disposed at the distal end of the shaft and is configured to image along a laterally oriented image path. The treatment element is configured to be deployed from the shaft along a laterally oriented treatment path, and the imaging path and the treatment path intersect at an intersectional location spaced laterally away from the shaft. A display is configured to present both an optical image from the optical imaging element and an ultrasonic image from the ultrasonic imaging element and to present a marker on the ultrasonic image at a location corresponding to the intersectional location.
    Type: Application
    Filed: September 12, 2022
    Publication date: June 29, 2023
    Applicant: FemDx Medsystems, Inc.
    Inventors: Pei-Jie Cao, Albert K. Chin, Xi Francis
  • Patent number: 11607234
    Abstract: Systems for providing access across a site of obstruction and methods for manufacturing and using such systems are provided. Such systems may include a cannula having a lumen, an everting member coupled to the cannula, and a push assembly having a pathway. The push assembly may be slidably disposed within the lumen of the cannula and connected to a proximal end of the everting member to move the everting member from an inverted position inside the cannula to an everted position outside the cannula. The systems may also include a hard tube having a passageway, the hard tube slidably disposed on or within the pathway of the push assembly. The hard tube being designed to create and opening within and traverse and obstruction within a structure.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: March 21, 2023
    Assignee: Cruzar Medsystems, Inc.
    Inventors: Thomas A. Kramer, Albert K. Chin, Michael J. Glennon
  • Patent number: 11602269
    Abstract: A falloposcope intended for use with a hysteroscope to access, image, and collect samples from a patient's fallopian tube includes a cannula having an angled tip oriented to engage a fallopian tube os when the cannula is transcervically introduced to a patient's uterus through the hysteroscope. The catheter has a distal viewing tip configured to be advanced from a distal end of the cannula into the patient's uterus through a cervical os. A viewing chamber has a wide proximal end attached to the distal viewing tip of the catheter, and the viewing chamber is at least partially transparent and typically tapers in a distal direction to provide a clear viewing zone for the endoscope as well as atraumatic advancement into the fallopian tube.
    Type: Grant
    Filed: May 26, 2020
    Date of Patent: March 14, 2023
    Assignee: FemDX Medsystems, Inc.
    Inventors: Albert K. Chin, Pei-Jie Cao
  • Publication number: 20230053690
    Abstract: A medical device for approximating and securing tissue without requiring knots includes a lock-head, a strap section, distal protuberance, and a leader section. The device also includes a transition section between the leader and the strap section and a stiffening section proximal to the protuberance. The leader section is used to draw the strap section into the body through small apertures in tissue and the transition section provides a gradual transition in stiffness and size between the leader and the strap section. Tensioner and cutter and a threading tool configured to be slidably removed from a lumen of the tensioner and cutter is provided. A blade within the lumen of the tensioner and cutter is provided to cut excess leader and/or strap when the procedure is completed.
    Type: Application
    Filed: January 26, 2021
    Publication date: February 23, 2023
    Inventors: Albert K. Chin, Thomas A. Kramer, Gannon Borchers, Peter Bugos
  • Patent number: 11564797
    Abstract: A venous valve prosthetic implant for treatment of venous disease may include an expandable anchoring frame, a valve seat attached to the anchoring frame, a ball retention member attached to the anchoring frame, and a ball disposed within the lumen of the anchoring frame, between the valve seat and the ball retention member. The anchoring frame may include a first end, a second end, and a middle valve portion, where the middle valve portion expands to a smaller diameter than a diameter of either the first end or the second end. The ball may move back and forth within the middle valve portion, between a fully open position and a fully closed position.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: January 31, 2023
    Assignee: Innovein, Inc.
    Inventors: Albert K. Chin, Austin Walker, Thomas A. Kramer
  • Patent number: 11565063
    Abstract: An endotracheal tube is disclosed that allows a patient to speak while intubated. The endotracheal tube includes a balloon for seating against the trachea and a collapsible portion proximal to the balloon that aligns with the vocal cords. The collapsible portion may be held open by an inner tube which translates within the endotracheal tube. Suction and balloon inflation conduits span the collapsible portion so that suction and balloon inflation may be performed while the patient is speaking. A small distal tube that bypasses the balloon provides some airflow while the patient speaks.
    Type: Grant
    Filed: August 29, 2021
    Date of Patent: January 31, 2023
    Inventors: Albert K Chin, Dan M Meyer
  • Publication number: 20220370201
    Abstract: An epicardial clip for reshaping the annulus of the mitral valve of a heart includes a curved member having an anterior segment configured to be positioned in the transverse sinus of the heart, a posterior segment configured to be positioned on the posterior side of the heart, such as on or inferior to the atrioventricular groove, and a lateral segment extending between the anterior segment and the posterior segment. The lateral segment includes a curve such that the first end of the member is positioned at or above the plane of the mitral valve and the second end of the member is positioned at or below the plane of the mitral valve.
    Type: Application
    Filed: April 8, 2022
    Publication date: November 24, 2022
    Applicant: MAQUET CARDIOVASCULAR LLC
    Inventors: Peter Tachi Callas, Pierluca Lombardi, Michael C. Stewart, Liming Lau, Mark S. Juravic, Evan Anderson, Joe Lamberti, Albert K. Chin, Tammy Wang
  • Publication number: 20220346779
    Abstract: A medical device for approximating and securing tissue without requiring knots includes a lock-head, a strap section, distal protuberance, and a leader section. The device also includes a transition section between the leader and the strap section and a stiffening section proximal to the protuberance. The leader section is used to draw the strap section into the body through small apertures in tissue and the transition section provides a gradual transition in stiffness and size between the leader and the strap section.
    Type: Application
    Filed: September 28, 2020
    Publication date: November 3, 2022
    Inventors: Thomas A. Kramer, Albert K. Chin, Gannon Borchers, Peter Bugos, Andrew Kwok, Steven Ledbetter
  • Publication number: 20220346772
    Abstract: Systems, devices, and methods for endoscopically retracting a target tissue. The device includes a first shaft and a second shaft slidably coupled thereto. An internal member extends in a transverse direction from the first shaft and is configured for advancement through a penetration in the target tissue to atraumatically engage a distal surface of the target tissue after being advanced therethrough. A pair of external members extend from the second shaft generally parallel to the transverse direction. The external members are spaced apart and are configured to atraumatically engage a proximal surface of the target tissue when the internal member is moved longitudinally relative to the external members. The internal member applies traction to the target tissue when retracted past the pair of external members, which apply counter-traction to the target tissue on opposing lateral sides of the internal member, to re-shape the target tissue and enable subsequent suture placement.
    Type: Application
    Filed: July 15, 2022
    Publication date: November 3, 2022
    Applicant: MITRx, Inc.
    Inventors: Albert K. Chin, Murali Dharan, John Ashley
  • Publication number: 20220257223
    Abstract: Components for an endoscopic vessel harvesting system suitable for harvesting target vessels such as the saphenous vein or radial artery for cardiac artery bypass graft surgery. The main components of such systems include a vessel dissector and a vessel harvester, both of which work in conjunction with a separately provided endoscope. The vessel dissector is an elongated cannula having a blunt tip for separating layers of facial around vessels. The tip may be movable, and is typically transparent to permit viewing forward of the tip using the endoscope. Internal features of the tip may reduce glare back to the endoscope. Several devices improve visibility through the tip by reducing interference from tissue or fluid on the tip. The vessel harvester also has an elongated cannula for receiving the endoscope. Several tools within the harvester permit manipulation, severing, and sealing of vessels forward of the distal end.
    Type: Application
    Filed: August 27, 2019
    Publication date: August 18, 2022
    Applicant: MAQUET CARDIOVASCULAR LLC
    Inventors: Liming LAU, Peter L. CALLAS, Michael C. STEWART, Geoffrey H. WILLIS, Ryan C. ABBOTT, Kimberly D. BARKMAN, Albert K. CHIN, Kenny L. DANG, Joseph N. LAMBERTI, Arthur M. LIN, Ravinder D. PAMNANI
  • Patent number: 11406375
    Abstract: Systems, devices, and methods for endoscopically retracting a target tissue. The device includes a first shaft and a second shaft slidably coupled thereto. An internal member extends in a transverse direction from the first shaft and is configured for advancement through a penetration in the target tissue to atraumatically engage a distal surface of the target tissue after being advanced therethrough. A pair of external members extend from the second shaft generally parallel to the transverse direction. The external members are spaced apart and are configured to atraumatically engage a proximal surface of the target tissue when the internal member is moved longitudinally relative to the external members. The internal member applies traction to the target tissue when retracted past the pair of external members, which apply counter-traction to the target tissue on opposing lateral sides of the internal member, to re-shape the target tissue and enable subsequent suture placement.
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: August 9, 2022
    Assignee: MITRx, Inc.
    Inventors: Albert K. Chin, Murali Dharan, John Ashley
  • Patent number: 11395724
    Abstract: A system and method for closing a fascial opening is disclosed. The system may include a strap that may be locked into each of a pair of anchors placed anterior to a muscle and on opposite sides of a fascial opening, one or more delivery tubes for delivering the anchors, and a needle for pulling the strap into each anchor. The method may include the steps of placing a dilating port through a skin incision, inserting an anchor through the dilating port, placing a strap into the body cavity, whereupon the strap may be pulled through the anchor. A second anchor may be placed on the contralateral side of the defect so that the strap may be pulled through the second anchor and cinched tightly closing the defect. The anchors may have a locking aperture that engages with the strap.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: July 26, 2022
    Assignee: TAS Medical Inc.
    Inventors: Albert K. Chin, Thomas A. Kramer
  • Publication number: 20220133289
    Abstract: Systems and methods for closing a tissue defect are disclosed. The systems may include a subcutaneous guide that is placed transcutaneously between two skin access sites and a self-locking strap that may be advanced into the body through a first access site via a first needle and then passed to a second needle. The strap may be withdrawn with the second needle through a second access site to the outside of the body. The strap may be withdrawn from the first needle, leaving the strap placed through both access sites and across the defect. As the subcutaneous guide is withdrawn from the body it pulls the captured strap such that both ends of the strap protrude from the first access site, allowing the strap to be tightened around the defect. Devices for closure of a tissue defect are also disclosed.
    Type: Application
    Filed: January 14, 2022
    Publication date: May 5, 2022
    Inventors: Albert K. Chin, Thomas A. Kramer
  • Patent number: D953675
    Type: Grant
    Filed: January 22, 2021
    Date of Patent: May 31, 2022
    Assignee: The Regents of the University of California
    Inventors: Alessandro Villa, Albert K. Chin