Patents by Inventor Julian Nikolchev

Julian Nikolchev 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: 20050209671
    Abstract: Medical device and methods for delivery or implantation of prostheses within hollow body organs and vessels or other luminal anatomy are disclosed. The subject technologies may be used in the treatment of atherosclerosis in stenting procedures. For such purposes, a self-expanding stent is deployed in connection with an angioplasty procedure with a corewire actuated delivery system having a fixed distal stent-carrying extension. Withdrawal of the corewire retracts a restraint freeing the sent from a collapsed state, whereupon the stent assumes an expanded configuration set in apposition to the interior surface of a vessel lumen in order to help maintain the vessel open.
    Type: Application
    Filed: March 2, 2004
    Publication date: September 22, 2005
    Inventors: Dai Ton, Julian Nikolchev, Nicholas Debeer, William George
  • Publication number: 20050209675
    Abstract: Medical device and methods for delivery or implantation of prostheses within hollow body organs and vessels or other luminal anatomy are disclosed. The subject technologies may be used in the treatment of atherosclerosis in stenting procedures. For such purposes, a self-expanding stent is deployed in connection with an angioplasty procedure with a corewire actuated delivery system having a fixed distal stent-carrying extension. Withdrawal of the corewire retracts a restraint freeing the stent from a collapsed state, whereupon the stent assumes an expanded configuration set in apposition to the interior surface of a vessel lumen in order to help maintain the vessel open.
    Type: Application
    Filed: November 18, 2004
    Publication date: September 22, 2005
    Inventors: Dai Ton, Julian Nikolchev, Nicholas Debeer, William George
  • Publication number: 20050209670
    Abstract: Medical device and methods for delivery or implantation of prostheses within hollow body organs and vessels or other luminal anatomy are disclosed. The subject technologies may be used in the treatment of atherosclerosis in stenting procedures. For such purposes, a self-expanding stent may be deployed in connection with an angioplasty procedure with a stent delivery system having a diameter adaptive restraint. Upon withdrawal of the restraint, the stent is freed, while the restraint or connections thereto assumes a reduced diameter within a tubular body of the delivery guide.
    Type: Application
    Filed: March 2, 2004
    Publication date: September 22, 2005
    Inventors: William George, Julian Nikolchev, Nicholas De Beer, Dai Ton, Frank Becking
  • Publication number: 20050172972
    Abstract: The invention provides intrafallopian devices and non-surgical methods for their placement to prevent conception. The efficacy of the device is enhanced by forming the structure at least in part from copper or a copper alloy. The device is anchored within the fallopian tube by a lumen-traversing region of the resilient structure which has a helical outer surface, together with a portion of the resilient structure which is biased to form a bent secondary shape, the secondary shape having a larger cross-section than the fallopian tube. The resilient structure is restrained in a straight configuration and transcervically inserted within the fallopian tube, where it is released. Optionally, permanent sterilization is effected by passing a current through the resilient structure to the tubal walls.
    Type: Application
    Filed: April 15, 2005
    Publication date: August 11, 2005
    Applicant: Conceptus, Inc.
    Inventors: Julian Nikolchev, Dai Ton, Ashish Khera, Donnell Gurskis, Steven Bacich
  • Patent number: 6871650
    Abstract: The invention provides intrafallopian devices and non-surgical methods for their placement to prevent conception. The efficacy of the device is enhanced by forming the structure at least in part from copper or a copper alloy. The device is anchored within the fallopian tube by imposing a secondary shape on a resilient structure, the secondary shape having a larger cross-section than the fallopian tube. The resilient structure is restrained in a straight configuration and transcervically inserted within the fallopian tube, where it is released. The resilient structure is then restrained by the walls of the fallopian tube, imposing anchoring forces as it tries to resume the secondary shape.
    Type: Grant
    Filed: June 12, 2000
    Date of Patent: March 29, 2005
    Assignee: Conceptus, Inc.
    Inventors: Julian Nikolchev, Dai Ton, Amy Thurmond
  • Publication number: 20040224347
    Abstract: The invention provides methods of identifying premalignant and malignant breast cancer, determining lymph node involvement in patients diagnosed with premalignant and malignant breast cancer growths, and methods of treating premalignant and malignant breast cancer. The diagnostic and methods comprise intraductal administration of a targeting molecule either alone acting as an identifying agent, or coupled to an identifying agent; the therapeutic methods comprise intraductal administration of a targeting molecule coupled to a therapeutic agent or administration of a targeting molecule having therapeutic activity in and of itself.
    Type: Application
    Filed: June 1, 2004
    Publication date: November 11, 2004
    Applicant: CYTYC CORPORATION
    Inventors: Susan Love, Julian Nikolchev, David Hung, Hui Cen
  • Publication number: 20040220585
    Abstract: The invention provides an atraumatic, low profile device for the delivery of one or more implants into tubular organs or open regions of the body. The implant delivery device may simultaneously or independently release portions of the implant, e.g., the proximal and distal ends of the implant. This independent release feature allows better implant positioning at the target site. Upon deployment, the implants may be placed at the target site without a sheath.
    Type: Application
    Filed: December 24, 2003
    Publication date: November 4, 2004
    Applicant: Cardiomind, Inc.
    Inventor: Julian Nikolchev
  • Publication number: 20040211429
    Abstract: The invention provides intrafallopian devices and non-surgical methods for their placement to prevent conception. The efficacy of the device is enhanced by forming the structure at least in part from copper or a copper alloy. The device is anchored within the fallopian tube by imposing a secondary shape on a resilient structure, the secondary shape having a larger cross-section than the fallopian tube. The resilient structure is restrained in a straight configuration and transcervically inserted within the fallopian tube, where it is released. The resilient structure is then restrained by the walls of the fallopian tube, imposing anchoring forces as it tries to resume the secondary shape.
    Type: Application
    Filed: May 14, 2004
    Publication date: October 28, 2004
    Applicant: CONCEPTUS, INC.
    Inventors: Julian Nikolchev, Dai Ton, Amy Thurmond
  • Publication number: 20040206358
    Abstract: The invention provides intrafallopian devices and non-surgical methods for their placement to prevent conception. The efficacy of the device is enhanced by forming the structure at least in part from copper or a copper alloy. The device is anchored within the fallopian tube by imposing a secondary shape on a resilient structure, the secondary shape having a larger cross-section than the fallopian tube. The resilient structure is restrained in a straight configuration and transcervically inserted within the fallopian tube, where it is released. The resilient structure is then restrained by the walls of the fallopian tube, imposing anchoring forces as it tries to resume the secondary shape.
    Type: Application
    Filed: May 14, 2004
    Publication date: October 21, 2004
    Applicant: CONCEPTUS, INC., a California corporation
    Inventors: Julian Nikolchev, Dai Ton, Amy Thurmond
  • Publication number: 20040193179
    Abstract: The invention provides an atraumatic, low profile device for the delivery of one or more implants into tubular organs or open regions of the body. The implant delivery device may simultaneously or independently release portions of the implant, e.g., the proximal and distal ends of the implant. This independent release feature allows better implant positioning at the target site. Upon deployment, the implants may be placed at the target site without a sheath.
    Type: Application
    Filed: December 24, 2003
    Publication date: September 30, 2004
    Applicant: CardioMind, Inc.
    Inventor: Julian Nikolchev
  • Publication number: 20040193178
    Abstract: The invention provides an atraumatic, low profile device for the delivery of one or more implants into tubular organs or open regions of the body. The implant delivery device may simultaneously or independently release portions of the implant, e.g., the proximal and distal ends of the implant. This independent release feature allows better implant positioning at the target site. Upon deployment, the implants may be placed at the target site without a sheath.
    Type: Application
    Filed: December 24, 2003
    Publication date: September 30, 2004
    Applicant: CardioMind, Inc.
    Inventor: Julian Nikolchev
  • Publication number: 20040163651
    Abstract: The invention provides intrafallopian devices and non-surgical methods for their placement to prevent conception. The efficacy of the device is enhanced by forming the structure at least in part from copper or a copper alloy. The device is anchored within the fallopian tube by imposing a secondary shape on a resilient structure, the secondary shape having a larger cross-section than the fallopian tube. The resilient structure is restrained in a straight configuration and transcervically inserted within the fallopian tube, where it is released. The resilient structure is then restrained by the walls of the fallopian tube, imposing anchoring forces as it tries to resume the secondary shape.
    Type: Application
    Filed: February 23, 2004
    Publication date: August 26, 2004
    Applicant: CONCEPTUS, INC.
    Inventors: Julian Nikolchev, Dai Ton, Amy Thurmond
  • Publication number: 20040159324
    Abstract: The invention provides intrafallopian devices and non-surgical methods for their placement to prevent conception. The efficacy of the device is enhanced by forming the structure at least in part from copper or a copper alloy. The device is anchored within the fallopian tube by imposing a secondary shape on a resilient structure, the secondary shape having a larger cross-section than the fallopian tube. The resilient structure is restrained in a straight configuration and transcervically inserted within the fallopian tube, where it is released. The resilient structure is then restrained by the walls of the fallopian tube, imposing anchoring forces as it tries to resume the secondary shape.
    Type: Application
    Filed: February 12, 2004
    Publication date: August 19, 2004
    Applicant: Conceptus, Inc.
    Inventors: Julian Nikolchev, Dai Ton, Amy Thurmond
  • Patent number: 6712816
    Abstract: Methods, systems, and kits for treating breast tissue rely on transferring energy to or from cells lining an individual breast duct. Energy can be introduced into the breast duct, e.g., by filling the duct with an electrically conductive medium and applying radiofrequency energy to the medium. Other energy forms could also be used, such as light, ultrasound, radiation, microwave energy, heat, cold, direct current, and the like. By treating individual breast ducts, cancerous and pre-cancerous conditions originating in the duct can be effectively treated.
    Type: Grant
    Filed: May 15, 2002
    Date of Patent: March 30, 2004
    Assignee: Cytyc Health Corporation
    Inventors: David Hung, Chris Ken, Julian Nikolchev, Susan Love, Shawn O'Leary
  • Publication number: 20040013639
    Abstract: The invention is a gel composition for delivery to a breast milk duct prior to surgical excision of breast tissue including cancerous lesions. The invention also provides methods of mapping all or nearly all of a breast milk duct prior to surgical excision of breast tissue, and method of identifying part or all of a breast duct or ducts as a surgical aide to a breast surgeon. Kits to support these methods and including these compositions are also provided.
    Type: Application
    Filed: April 29, 2003
    Publication date: January 22, 2004
    Applicant: Cytyc Health Corporation
    Inventors: Annette Bianchi, Julian Nikolchev, David Hung, Eyal Ron, Linda K. Gont, Susan Love, Tina Patel
  • Patent number: 6679266
    Abstract: The invention provides intrafallopian devices and non-surgical methods for their placement to prevent conception. The efficacy of the device is enhanced by forming the structure at least in part from copper or a copper alloy. The device is anchored within the fallopian tube by imposing a secondary shape on a resilient structure, the secondary shape having a larger cross-section than the fallopian tube. The resilient structure is restrained in a straight configuration and transcervically inserted within the fallopian tube, where it is released. The resilient structure is then restrained by the walls of the fallopian tube, imposing anchoring forces as it tries to resume the secondary shape.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: January 20, 2004
    Assignee: Conceptus, Inc.
    Inventors: Julian Nikolchev, Dai Ton, Amy Thurmond
  • Patent number: 6589998
    Abstract: The invention is a gel composition for delivery to a breast milk duct prior to surgical excision of breast tissue including cancerous lesions. The invention also provides methods of mapping all or nearly all of a breast milk duct prior to surgical excision of breast tissue, and method of identifying part or all of a breast duct or ducts as a surgical aide to a breast surgeon. Kits to support these methods and including these compositions are also provided.
    Type: Grant
    Filed: June 9, 2000
    Date of Patent: July 8, 2003
    Assignee: Cytyc Health Corporation
    Inventors: Annette Bianchi, Julian Nikolchev, David Hung, Eyal Ron, Linda Gont, Susan Love, Tina Patel
  • Publication number: 20030049262
    Abstract: The disclosure describes methods of identifying and treating premalignant and malignant breast cancer, and systems and kits for the same. The diagnostic methods comprise intraductal administration of agents that can clear in the body comprising a targeting molecule either alone acting as an identifying agent, or coupled to an identifying agent; the therapeutic methods comprise intraductal administration of agents that can clear n the body comprising a targeting molecule coupled to a therapeutic agent or a targeting molecule having also therapeutic activity.
    Type: Application
    Filed: May 5, 2000
    Publication date: March 13, 2003
    Inventors: Susan Love, Julian Nikolchev, David Hung, Hui Cen
  • Publication number: 20030039959
    Abstract: The invention provides methods of identifying premalignant and malignant breast cancer, determining lymph node involvement in patients diagnosed with premalignant and malignant breast cancer growths, and methods of treating premalignant and malignant breast cancer. The diagnostic and methods comprise intraductal administration of a targeting molecule either alone acting as an identifying agent, or coupled to an identifying agent; the therapeutic methods comprise intraductal administration of a targeting molecule coupled to a therapeutic agent or administration of a targeting molecule having therapeutic activity in and of itself.
    Type: Application
    Filed: October 1, 1999
    Publication date: February 27, 2003
    Inventors: SUSAN LOVE, JULIAN NIKOLCHEV, DAVID HUNG
  • Publication number: 20020133151
    Abstract: Methods, systems, and kits for treating breast tissue rely on transferring energy to or from cells lining an individual breast duct. Energy can be introduced into the breast duct, e.g., by filling the duct with an electrically conductive medium and applying radiofrequency energy to the medium. Other energy forms could also be used, such as light, ultrasound, radiation, microwave energy, heat, cold, direct current, and the like. By treating individual breast ducts, cancerous and pre-cancerous conditions originating in the duct can be effectively treated.
    Type: Application
    Filed: May 15, 2002
    Publication date: September 19, 2002
    Applicant: Pro Duct Health, Inc.
    Inventors: David Hung, Christopher G.M. Ken, Julian Nikolchev, Susan Love, Shawn O'Leary