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).
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Patent number: 8127422Abstract: 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: GrantFiled: September 14, 2010Date of Patent: March 6, 2012Assignee: Abbott Cardiovascular Systems Inc.Inventor: Patrick P. Wu
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Patent number: 8112874Abstract: 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: GrantFiled: September 21, 2010Date of Patent: February 14, 2012Assignee: Abbott Cardiovascular Systems Inc.Inventor: Patrick P. Wu
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Patent number: 7993384Abstract: 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: GrantFiled: September 22, 2004Date of Patent: August 9, 2011Assignee: Abbott Cardiovascular Systems Inc.Inventors: Patrick P. Wu, Keif Fitzgerald, Stephanie Klocke
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Publication number: 20110034988Abstract: 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: ApplicationFiled: September 21, 2010Publication date: February 10, 2011Inventor: Patrick P. Wu
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Publication number: 20110000070Abstract: 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: ApplicationFiled: September 14, 2010Publication date: January 6, 2011Inventor: Patrick P. Wu
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Patent number: 7837725Abstract: 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: GrantFiled: July 15, 2008Date of Patent: November 23, 2010Assignee: Abbott Vascular Solutions Inc.Inventors: Keif M. Fitzgerald, James C. Shuler, Patrick P. Wu
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Patent number: 7823263Abstract: 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: GrantFiled: July 9, 2007Date of Patent: November 2, 2010Assignee: Abbott Cardiovascular Systems Inc.Inventor: Patrick P. Wu
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Patent number: 7758625Abstract: 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: GrantFiled: September 12, 2003Date of Patent: July 20, 2010Assignee: Abbott Vascular Solutions Inc.Inventors: Patrick P. Wu, Keif Fitzgerald, August Yambao, Michael Green
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Publication number: 20100145431Abstract: 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: ApplicationFiled: February 10, 2010Publication date: June 10, 2010Applicant: ABBOTT VASCULAR SOLUTIONS INC.Inventors: Patrick P. Wu, Keif Fitzgerald, August Yambao, Michael Green
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Publication number: 20100109204Abstract: 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: ApplicationFiled: December 21, 2009Publication date: May 6, 2010Inventor: Patrick P. Wu
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Patent number: 7674282Abstract: 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: GrantFiled: December 7, 2006Date of Patent: March 9, 2010Assignee: Abbott Vascular Solutions Inc.Inventors: Patrick P. Wu, Keif Fitzgerald, August Yambao, Michael Green
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Patent number: 7658880Abstract: 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: GrantFiled: July 29, 2005Date of Patent: February 9, 2010Assignee: Advanced Cardiovascular Systems, Inc.Inventor: Patrick P. Wu
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Publication number: 20090099641Abstract: 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: ApplicationFiled: December 12, 2008Publication date: April 16, 2009Applicant: ABBOTT VASCULAR SOLUTIONS INC.Inventors: Patrick P. Wu, Keif Fitzgerald, August Yambao, Michael Green
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Publication number: 20090024201Abstract: 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: ApplicationFiled: July 15, 2008Publication date: January 22, 2009Applicant: ENDOVASCULAR TECHNOLOGIES, INC.Inventors: Keif M. Fitzgerald, James C. Shuler, Patrick P. Wu
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Patent number: 6673101Abstract: 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: GrantFiled: October 9, 2002Date of Patent: January 6, 2004Assignee: Endovascular Technologies, Inc.Inventors: Keif M. Fitzgerald, James C. Shuler, Patrick P. Wu