Patents by Inventor Patrick P. Wu

Patrick P. Wu 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: 8127422
    Abstract: A mandrel for supporting a stent and rollers for pressing a radiopaque marker into a stent are disclosed. The mandrel can have a forward portion for carrying the stent and a rear portion for urging the stent forward portion into a gap between the rollers. The mandrel may be pushed or pulled into the gap, which is sized to allow the rollers to press the marker into engagement with the stent. Prior to moving the mandrel into the gap, the marker may be placed on a surface of the stent or partially inside a recess in the stent. Several markers can be efficiently and uniformly pressed onto the stent by moving the mandrel into the gap in one continuous movement in an axial or lateral direction. Markers can also be pressed onto the stent by placing the stent in the gap and rotating the stent about its central axis.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: March 6, 2012
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventor: Patrick P. Wu
  • Patent number: 8112874
    Abstract: A tool, system, and method for removing islands from a stent is disclosed. The tool includes a tube with at least one exit hole in communication with the interior of the tube, and the tube being connected to a pressurized fluid source. A stent island is located over the exit hole and is removed by the force of the exiting fluid from the exit hole.
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: February 14, 2012
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventor: Patrick P. Wu
  • Patent number: 7993384
    Abstract: The invention is directed to a delivery system for implantation a self-expanding medical device in a body which includes a control handle and a catheter portion. The catheter portion includes an outer restraining member which covers the collapsed, medical device, an inner catheter member having a distal end including a region upon which the medical device is mounted, and an outer sheath which is removably attached to the control handle. The outer sheath creates a conduit for the catheter portion to prevent the inner catheter member from moving axially when the outer restraining member is retracted. The control handle has a rotatable thumbwheel to actuate a retraction mechanism attached to the proximal end of the outer restraining member which moves the restraining member in a proximal direction to deploy the medical device.
    Type: Grant
    Filed: September 22, 2004
    Date of Patent: August 9, 2011
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Patrick P. Wu, Keif Fitzgerald, Stephanie Klocke
  • Publication number: 20110034988
    Abstract: A tool, system, and method for removing islands from a stent is disclosed. The tool includes a tube with at least one exit hole in communication with the interior of the tube, and the tube being connected to a pressurized fluid source. A stent island is located over the exit hole and is removed by the force of the exiting fluid from the exit hole.
    Type: Application
    Filed: September 21, 2010
    Publication date: February 10, 2011
    Inventor: Patrick P. Wu
  • Publication number: 20110000070
    Abstract: A mandrel for supporting a stent and rollers for pressing a radiopaque marker into a stent are disclosed. The mandrel can have a forward portion for carrying the stent and a rear portion for urging the stent forward portion into a gap between the rollers. The mandrel may be pushed or pulled into the gap, which is sized to allow the rollers to press the marker into engagement with the stent. Prior to moving the mandrel into the gap, the marker may be placed on a surface of the stent or partially inside a recess in the stent. Several markers can be efficiently and uniformly pressed onto the stent by moving the mandrel into the gap in one continuous movement in an axial or lateral direction. Markers can also be pressed onto the stent by placing the stent in the gap and rotating the stent about its central axis.
    Type: Application
    Filed: September 14, 2010
    Publication date: January 6, 2011
    Inventor: Patrick P. Wu
  • Patent number: 7837725
    Abstract: An assembly for delivering a stent to an intraluminal location comprising a catheter having an inner member and an outer member, a stent positioned between the inner member and the outer member at the catheter distal end, and a cutter/slider/deployment mechanism slidable secured to the catheter proximal end. A user may vary the length of the catheter by slidably advancing the cutter/slider/deployment mechanism along the catheter, whereby excess portions of the catheter are cut away. When the desired length is achieved, the user can secure the cutter/slider/deployment mechanism to the catheter to prevent further slidable advancement. The user may also vary the configuration of the catheter handle by adding or removing a removable platform from the handle. Upon stent deployment, the stent is released from the outer member, and the stent will expand as desired.
    Type: Grant
    Filed: July 15, 2008
    Date of Patent: November 23, 2010
    Assignee: Abbott Vascular Solutions Inc.
    Inventors: Keif M. Fitzgerald, James C. Shuler, Patrick P. Wu
  • Patent number: 7823263
    Abstract: A tool for removing islands from a stent is disclosed. The tool includes a tube with at least one exit hole in communication with the center of the tube, and the tube being connected to a pressurized fluid source. A stent island is located over the exit hole and is removed by the force of the exiting fluid from the exit hole.
    Type: Grant
    Filed: July 9, 2007
    Date of Patent: November 2, 2010
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventor: Patrick P. Wu
  • Patent number: 7758625
    Abstract: A delivery system for implantation a self-expanding medical device in a body includes a control handle and a catheter portion. The catheter portion includes an outer restraining member which covers the collapsed, medical device, an inner catheter member having a distal end including a region upon which the medical device is mounted, and an outer sheath removably attached to the control handle. The outer sheath creates a conduit for the catheter portion to prevent the inner catheter member from moving axially when the outer restraining member is retracted. The control handle has a rotatable thumbwheel to actuate a retraction mechanism attached to the proximal end of the outer restraining member which moves the restraining member in a proximal direction to deploy the medical device.
    Type: Grant
    Filed: September 12, 2003
    Date of Patent: July 20, 2010
    Assignee: Abbott Vascular Solutions Inc.
    Inventors: Patrick P. Wu, Keif Fitzgerald, August Yambao, Michael Green
  • Publication number: 20100145431
    Abstract: The invention is directed a delivery system for implantation a self-expanding medical device in a body which includes a control handle and a catheter portion. The catheter portion includes an outer restraining member which covers the collapsed, medical device, an inner catheter member having a distal end including a region upon which the medical device is mounted, and an outer sheath which is removably attached to the control handle. The outer sheath creates a conduit for the catheter portion to prevent the inner catheter member from moving axially when the outer restraining member is retracted. The control handle has a rotatable thumbwheel to actuate a retraction mechanism attached to the proximal end of the outer restraining member which moves the restraining member in a proximal direction to deploy the medical device.
    Type: Application
    Filed: February 10, 2010
    Publication date: June 10, 2010
    Applicant: ABBOTT VASCULAR SOLUTIONS INC.
    Inventors: Patrick P. Wu, Keif Fitzgerald, August Yambao, Michael Green
  • Publication number: 20100109204
    Abstract: A method and apparatus for simultaneously polishing the inner and outer surfaces of an unpolished polymeric stent using a heat process. The unpolished stent can be mounted, for example, on a “spiral-mandrel,” a tubular helical structure with gaps in between a series of coils of the structure. Heat from a heat source can then applied to the spiral-mandrel at a range between the glass transition temperature and melting temperature of the polymer of the stent.
    Type: Application
    Filed: December 21, 2009
    Publication date: May 6, 2010
    Inventor: Patrick P. Wu
  • Patent number: 7674282
    Abstract: The invention is directed a delivery system for implantation a self-expanding medical device in a body which includes a control handle and a catheter portion. The catheter portion includes an outer restraining member which covers the collapsed, medical device, an inner catheter member having a distal end including a region upon which the medical device is mounted, and an outer sheath which is removably attached to the control handle. The outer sheath creates a conduit for the catheter portion to prevent the inner catheter member from moving axially when the outer restraining member is retracted. The control handle has a rotatable thumbwheel to actuate a retraction mechanism attached to the proximal end of the outer restraining member which moves the restraining member in a proximal direction to deploy the medical device.
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: March 9, 2010
    Assignee: Abbott Vascular Solutions Inc.
    Inventors: Patrick P. Wu, Keif Fitzgerald, August Yambao, Michael Green
  • Patent number: 7658880
    Abstract: A method and apparatus for simultaneously polishing the inner and outer surfaces of an unpolished polymeric stent using a heat process. The unpolished stent can be mounted, for example, on a “spiral-mandrel,” a tubular helical structure with gaps in between a series of coils of the structure. Heat from a heat source can then applied to the spiral-mandrel at a range between the glass transition temperature and melting temperature of the polymer of the stent.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: February 9, 2010
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventor: Patrick P. Wu
  • Publication number: 20090099641
    Abstract: The invention is directed a delivery system for implantation a self-expanding medical device in a body which includes a control handle and a catheter portion. The catheter portion includes an outer restraining member which covers the collapsed, medical device, an inner catheter member having a distal end including a region upon which the medical device is mounted, and an outer sheath which is removably attached to the control handle. The outer sheath creates a conduit for the catheter portion to prevent the inner catheter member from moving axially when the outer restraining member is retracted. The control handle has a rotatable thumbwheel to actuate a retraction mechanism attached to the proximal end of the outer restraining member which moves the restraining member in a proximal direction to deploy the medical device.
    Type: Application
    Filed: December 12, 2008
    Publication date: April 16, 2009
    Applicant: ABBOTT VASCULAR SOLUTIONS INC.
    Inventors: Patrick P. Wu, Keif Fitzgerald, August Yambao, Michael Green
  • Publication number: 20090024201
    Abstract: An assembly for delivering a stent to an intraluminal location comprising a catheter having an inner member and an outer member, a stent positioned between the inner member and the outer member at the catheter distal end, and a cutter/slider/deployment mechanism slidable secured to the catheter proximal end. A user may vary the length of the catheter by slidably advancing the cutter/slider/deployment mechanism along the catheter, whereby excess portions of the catheter are cut away. When the desired length is achieved, the user can secure the cutter/slider/deployment mechanism to the catheter to prevent further slidable advancement. The user may also vary the configuration of the catheter handle by adding or removing a removable platform from the handle. Upon stent deployment, the stent is released from the outer member, and the stent will expand as desired.
    Type: Application
    Filed: July 15, 2008
    Publication date: January 22, 2009
    Applicant: ENDOVASCULAR TECHNOLOGIES, INC.
    Inventors: Keif M. Fitzgerald, James C. Shuler, Patrick P. Wu
  • Patent number: 6673101
    Abstract: An assembly for delivering a stent to an intraluminal location comprising a catheter having an inner member and an outer member, a stent positioned between the inner member and the outer member at the catheter distal end, and a cutter/slider/deployment mechanism slidable secured to the catheter proximal end. A user may vary the length of the catheter by slidably advancing the cutter/slider/deployment mechanism along the catheter, whereby excess portions of the catheter are cut away. When the desired length is achieved, the user can secure the cutter/slider/deployment mechanism to the catheter to prevent further slidable advancement. The user may also vary the configuration of the catheter handle by adding or removing a removable platform from the handle. Upon stent deployment, the stent is released from the outer member, and the stent will expand as desired.
    Type: Grant
    Filed: October 9, 2002
    Date of Patent: January 6, 2004
    Assignee: Endovascular Technologies, Inc.
    Inventors: Keif M. Fitzgerald, James C. Shuler, Patrick P. Wu