Patents by Inventor Stella Chu

Stella Chu 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).

  • Medical implant detachment systems and methods
    Patent number: 8974513
    Abstract: An implant assembly comprises an elongated pusher member, and an implantable device (e.g., a vaso-occlusive device) mounted to the distal end of the pusher member. The implant assembly further comprises an electrolytically severable joint disposed on the pusher member, wherein the implantable device detaches from the pusher member when the severable joint is severed, and a return electrode carried by the distal end of the pusher member (e.g., a coil disposed about the pusher member) in proximity to, but electrically isolated from, the severable joint. The implant assembly further comprises a terminal carried by the proximal end of the pusher member in electrical communication with the severable joint.
    Type: Grant
    Filed: July 2, 2012
    Date of Patent: March 10, 2015
    Assignees: Stryker Corporation, Stryker NV Operations Limited
    Inventors: Russell Ford, Scott McGill, Clifford Teoh, Michael Williams, Kamal Ramzipoor, Like Que, Ann Huang, Elena Oo, Christina Ma, Stella Chu
  • Mechanically detachable vaso-occlusive device
    Patent number: 8956381
    Abstract: A device for delivering an occlusive element includes an elongate sheath. A distal blocking member is located at the distal end of the elongate sheath and includes an aperture therein. An elongate releasing member is disposed within a lumen of the elongate sheath. The elongate releasing member includes a proximal end and a distal end with the distal end terminating in at least one retaining member. The device includes an occlusive element such as, for example, a vaso-occlusive coil that has a securing member located at a proximal end thereof. The securing member of the occlusive element passes through the aperture of the distal blocking member and the at least one retaining member is releasably secured to the securing member.
    Type: Grant
    Filed: November 20, 2007
    Date of Patent: February 17, 2015
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Like Que, Ann Huang, Esther Chang, Thazin Win, Stella Chu
  • MEDICAL IMPLANT DETACHMENT SYSTEMS AND METHODS
    Publication number: 20120271344
    Abstract: An implant assembly comprises an elongated pusher member, and an implantable device (e.g., a vaso-occlusive device) mounted to the distal end of the pusher member. The implant assembly further comprises an electrolytically severable joint disposed on the pusher member, wherein the implantable device detaches from the pusher member when the severable joint is severed, and a return electrode carried by the distal end of the pusher member (e.g., a coil disposed about the pusher member) in proximity to, but electrically isolated from, the severable joint. The implant assembly further comprises a terminal carried by the proximal end of the pusher member in electrical communication with the severable joint.
    Type: Application
    Filed: July 2, 2012
    Publication date: October 25, 2012
    Applicants: STRYKER NV OPERATIONS LIMITED, STRYKER CORPORATION
    Inventors: Russell FORD, Scott MCGILL, Clifford TEOH, Michael WILLIAMS, Kamal RAMZIPOOR, Like QUE, Ann HUANG, Elena OO, Christina MA, Stella CHU
  • Medical implant detachment systems and methods
    Patent number: 8221483
    Abstract: An implant assembly comprises an elongated pusher member, and an implantable device (e.g., a vaso-occlusive device) mounted to the distal end of the pusher member. The implant assembly further comprises an electrolytically severable joint disposed on the pusher member, wherein the implantable device detaches from the pusher member when the severable joint is severed, and a return electrode carried by the distal end of the pusher member (e.g., a coil disposed about the pusher member) in proximity to, but electrically isolated from, the severable joint. The implant assembly further comprises a terminal carried by the proximal end of the pusher member in electrical communication with the severable joint.
    Type: Grant
    Filed: May 16, 2008
    Date of Patent: July 17, 2012
    Assignees: Stryker Corporation, Stryker NV Operations Limited
    Inventors: Russell Ford, Scott McGill, Clifford Teoh, Michael Williams, Kamal Ramzipoor, Like Que, Ann Huang, Elena Oo, Christina Ma, Stella Chu
  • IMPLANTABLE DEVICE WITH ELECTROLYTICALLY DETACHABLE JUNCTION HAVING MULTIPLE FINE WIRES AND METHOD OF INTRODUCTION
    Publication number: 20090143786
    Abstract: Electrolytically detachable implantable devices and methods of delivering the same to a treatment site. An assembly includes an implantable device, such as a vaso-occlusive coil, a conductive deployment mechanism, such as a conductive pusher or wire, and a temporary connection between the deployment mechanism and the coil in the form of an electrolytically detachable junction. The detachable junction includes fine wires, e.g., stainless steel wires having a small diameter of about 0.00001? to about 0.0025?, for example, about 0.0005?. The pusher or wire is used to deliver the implantable device through a catheter and to a desired location or treatment site. After the implantable device is properly positioned, electrical current is applied to the fine wires, thereby simultaneously disintegrating the fine wires and leaving the coil at the treatment site.
    Type: Application
    Filed: November 21, 2008
    Publication date: June 4, 2009
    Applicant: Boston Scientific Scimed, Inc.
    Inventors: Mehran Bashiri, Stella Chu, Esther Chang
  • MEDICAL IMPLANT DETACHMENT SYSTEMS AND METHODS
    Publication number: 20090062726
    Abstract: An implant assembly comprises an elongated pusher member, and an implantable device (e.g., a vaso-occlusive device) mounted to the distal end of the pusher member. The implant assembly further comprises an electrolytically severable joint disposed on the pusher member, wherein the implantable device detaches from the pusher member when the severable joint is severed, and a return electrode carried by the distal end of the pusher member (e.g., a coil disposed about the pusher member) in proximity to, but electrically isolated from, the severable joint. The implant assembly further comprises a terminal carried by the proximal end of the pusher member in electrical communication with the severable joint.
    Type: Application
    Filed: May 16, 2008
    Publication date: March 5, 2009
    Applicant: Bsoton Scientific Scimed, Inc.
    Inventors: Russell Ford, Scott McGill, Clifford Teoh, Michael Williams, Kamal Ramzipoor, Like Que, Ann Huang, Elena Oo, Christina Ma, Stella Chu
  • MECHANICALLY DETACHABLE VASO-OCCLUSIVE DEVICE
    Publication number: 20080119887
    Abstract: A device for delivering an occlusive element includes an elongate sheath. A distal blocking member is located at the distal end of the elongate sheath and includes an aperture therein. An elongate releasing member is disposed within a lumen of the elongate sheath. The elongate releasing member includes a proximal end and a distal end with the distal end terminating in at least one retaining member. The device includes an occlusive element such as, for example, a vaso-occlusive coil that has a securing member located at a proximal end thereof. The securing member of the occlusive element passes through the aperture of the distal blocking member and the at least one retaining member is releasably secured to the securing member.
    Type: Application
    Filed: November 20, 2007
    Publication date: May 22, 2008
    Applicant: BOSTON SCIENTIFIC SCIMED, INC.
    Inventors: Like Que, Ann Huang, Esther Change, Thazin Win, Stella Chu