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).

  • Patent number: 11123052
    Abstract: Forming a proximal anastomosis on an aortic wall includes method and instrumentation and apparatus for forming an aortic puncture and inserting into the vessel through the puncture a fluid-impervious sealing element with a protruding retainer. An anastomosis of a graft vessel over the puncture is partially completed with the retainer of the sealing element protruding through the partial anastomosis. The retainer facilitates removal of the sealing element from the partial anastomosis prior to completion of the procedure.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: September 21, 2021
    Assignee: MAQUET CARDIOVASCULAR LLC
    Inventors: Albert K. Chin, Dwight Morejohn, Charles S. Taylor, Steven B. Choi, Eugene Reis, John W. Davis, Edwarda Pineda, Kushal P. Vepa
  • Publication number: 20210219835
    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: April 6, 2021
    Publication date: July 22, 2021
    Applicant: MAQUET CARDIOVASCULAR LLC
    Inventors: Liming LAU, Peter L. CALLAS, Michael C. STEWART, Geoffrey H. WILLIS, Ryan C. ABBOTT, Charles J. ADAM, Kimberly D. BARKMAN, Albert K. CHIN, Kenny L. DANG, Joseph N. LAMBERTI, Arthur M. LIN, Ravinder D. PAMNANI
  • Publication number: 20210205007
    Abstract: Devices, instruments and tools for minimally invasive surgical procedures. Port devices and methods for hemostatically sealing and providing a port through a tissue wall that interfaces with a fluid containing chamber, by minimally invasive techniques. Assemblies, instruments and methods for minimally invasive access to and through a tissue wall that interfaces with a fluid containing chamber, and for visualizing same. Instruments, assemblies and methods for minimally invasive surgical procedures, including ablation.
    Type: Application
    Filed: March 23, 2021
    Publication date: July 8, 2021
    Applicant: MAQUET CARDIOVASCULAR LLC
    Inventors: Evan R. ANDERSON, Alfredo R. CANTU, Albert K. CHIN, Amar KENDALE
  • Publication number: 20210186700
    Abstract: A valve prosthetic implant for treating a vein or other blood vessel includes a tubular, expandable anchoring frame extending from a proximal end to a distal end of the implant, a valve seat formed at or near the middle of the anchoring frame, an expandable ball disposed within the lumen of the anchoring frame, and a ball retention tether attached to the expandable ball and to the valve seat and/or the anchoring frame. The anchoring frame may include a cylindrical proximal portion at the proximal end, a cylindrical distal portion at the distal end, an inwardly angled inlet portion between the cylindrical proximal portion and a middle of the anchoring frame, and an inwardly angled outlet portion between the cylindrical distal portion and the middle of the anchoring frame.
    Type: Application
    Filed: January 6, 2021
    Publication date: June 24, 2021
    Inventors: Albert K CHIN, Andrew MOLL, Andrew KWOK, Thomas A KRAMER, Austin WALKER, Eric CHEN
  • Patent number: 10993766
    Abstract: Devices, instruments and tools for minimally invasive surgical procedures. Port devices and methods for hemostatically sealing and providing a port through a tissue wall that interfaces with a fluid containing chamber, by minimally invasive techniques. Assemblies, instruments and methods for minimally invasive access to and through a tissue wall that interfaces with a fluid containing chamber, and for visualizing same. Instruments, assemblies and methods for minimally invasive surgical procedures, including ablation.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: May 4, 2021
    Assignee: MAQUET CARDIOVASCULAR LLC
    Inventors: Evan R. Anderson, Alfredo R. Cantu, Albert K. Chin, Amar Kendale
  • Publication number: 20210085310
    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 1, 2020
    Publication date: March 25, 2021
    Inventors: Albert K. Chin, Murali Dharan, John Ashley
  • Patent number: 10912647
    Abstract: A valve prosthetic implant for treating a vein or other blood vessel includes a tubular, expandable anchoring frame extending from a proximal end to a distal end of the implant, a valve seat formed at or near the middle of the anchoring frame, an expandable ball disposed within the lumen of the anchoring frame, and a ball retention tether attached to the expandable ball and to the valve seat and/or the anchoring frame. The anchoring frame may include a cylindrical proximal portion at the proximal end, a cylindrical distal portion at the distal end, an inwardly angled inlet portion between the cylindrical proximal portion and a middle of the anchoring frame, and an inwardly angled outlet portion between the cylindrical distal portion and the middle of the anchoring frame.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: February 9, 2021
    Assignee: INNOVEIN, INC.
    Inventors: Albert K Chin, Andrew Moll, Andrew Kwok, Thomas A Kramer, Austin Walker, Eric Chen
  • Publication number: 20200390454
    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: Application
    Filed: June 11, 2019
    Publication date: December 17, 2020
    Inventors: Thomas A. Kramer, Albert K. Chin, Michael J. Glennon
  • Publication number: 20200330082
    Abstract: The present disclosure relates to systems and methods for cell collection within a vessel. The systems and methods can include a cannula having with a pathway extending between a first end and a second end of the cannula and a first lumen situated longitudinally within the pathway of the cannula. The systems and methods can also include an inverted balloon situated within the first lumen, the balloon being coupled at one end to the second end of the cannula and coupled at an opposing end to a rod to permit controlled eversion. In the presence of positive pressure along a defined path diverging from an axis of the pathway the balloon, along with an inverted sleeve situated within the balloon, can evert along the defined path from within the cannula.
    Type: Application
    Filed: April 17, 2020
    Publication date: October 22, 2020
    Inventors: Albert K. Chin, Michael Glennon
  • Publication number: 20200222078
    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: January 13, 2020
    Publication date: July 16, 2020
    Inventors: Murali DHARAN, Albert K. CHIN, Jeffry J. GRAINGER
  • Publication number: 20200205795
    Abstract: A system and method for cell collection within a vessel. The system including a cannula having a pathway extending from a first end to a second end, a elongated member situated longitudinally within the pathway of the cannula, a sleeve coupled to the second end of the cannula and a balloon situated within the sleeve.
    Type: Application
    Filed: December 28, 2018
    Publication date: July 2, 2020
    Inventors: Albert K. Chin, Michael Glennon
  • Publication number: 20200138557
    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: Application
    Filed: December 4, 2019
    Publication date: May 7, 2020
    Applicant: TAS Medical Inc.
    Inventors: Albert K. Chin, Thomas A. Kramer
  • Patent number: 10543073
    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: November 2, 2017
    Date of Patent: January 28, 2020
    Assignee: TAS Medical Inc.
    Inventors: Albert K Chin, Thomas A. Kramer
  • Patent number: 10537353
    Abstract: Unitary endoscopic vessel harvesting devices are disclosed. In some embodiments, such devices comprise an elongated body having a proximal end and a distal end, a tip disposed at the distal end of the elongated body; and a cutting unit having a first cutting portion and a second cutting portion, the first cutting portion and the second cutting portion being moveable in a longitudinal direction relative to the elongated body to capture a blood vessel between the first cutting portion and the second cutting portion, and being rotatable relative to one another circumferentially about the tip to cut the captured blood vessel.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: January 21, 2020
    Assignee: Saphena Medical, Inc.
    Inventors: Albert K. Chin, Mark J. Orphanos, Michael Barenboym
  • Publication number: 20200015972
    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: September 3, 2019
    Publication date: January 16, 2020
    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: 20190380688
    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: December 19, 2019
    Applicant: MAQUET CARDIOVASCULAR LLC
    Inventors: Liming LAU, Peter L. CALLAS, Michael C. STEWART, Geoffrey H. WILLIS, Ryan C. ABBOTT, Charles J. ADAM, Kimberley D. BARKMAN, Albert K. CHIN, Kenny L. DANG, Joseph N. LAMBERTI, Arthur M. LIN, Ravinder D. PAMNANI
  • Publication number: 20190365364
    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 16, 2018
    Publication date: December 5, 2019
    Applicant: TAS Medical Inc.
    Inventors: Albert K Chin, Thomas A Kramer
  • Patent number: 10485663
    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: Grant
    Filed: September 20, 2017
    Date of Patent: November 26, 2019
    Assignee: 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
  • Patent number: 10441755
    Abstract: Systems for providing access across a site of obstruction and methods for manufacturing and using such systems. Such systems may include a sleeve having an inflation lumen; a bushing disposed in a distal section of the sleeve; and an everting member coupled to the sleeve with the bushing, the everting member being movable from an inverted position inside the sleeve to an everted position outside the sleeve in response to an increase in pressure in the inflation lumen.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: October 15, 2019
    Assignee: Cruzar Medsystems, Inc.
    Inventors: Albert K. Chin, Thomas Kramer
  • Patent number: 10349957
    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 tube having a passageway, the tube slidably disposed within the pathway of the push assembly and extending through a proximal end of the push assembly into the pathway of the push assembly to selectively move from a first position inside the push assembly to a second position outside the push assembly.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: July 16, 2019
    Assignee: Cruzar Medsystems, Inc.
    Inventors: Albert K. Chin, Thomas Kramer, Michael Glennon