Patents by Inventor Keif Fitzgerald
Keif Fitzgerald 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: 8257420Abstract: A stent delivery catheter system having a reinforcing tether member secured to the catheter such that the catheter is provided with an improved combination of an enhanced tensile strength together with other catheter performance characteristics such as low profile and high flexibility. The stent delivery system includes an elongated delivery catheter including a reinforcing tether member secured to the inner tubular member of the catheter. The tether member has a distal end length extending helically from the distal tip member or proximally adjacent to the proximal end of the distal tip member of the catheter and a portion that also extends axially through the stent holder region of the catheter. This reinforcing tether member provides enhanced tensile strength to the catheter.Type: GrantFiled: November 14, 2008Date of Patent: September 4, 2012Assignee: Abbott Cardiovascular Systems Inc.Inventors: Keif Fitzgerald, Leticia Castillon
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Patent number: 8252041Abstract: Stent designs for use in peripheral vessels, such as the carotid arteries, are disclosed. The stents consist of a plurality of radially expandable cylindrical elements generally aligned on a common longitudinal stent axis and interconnected by one or more interconnecting members placed so that the stent is flexible in a longitudinal direction. The cylindrical elements are generally serpentine wave pattern transverse to the longitudinal axis between alternating valley portion and peak portions, the valley portion including alternating double-curved portions and U-shaped portions. The interconnecting members are attached to the double-curved portions to connect a cylindrical element to an adjacent cylindrical element and interconnecting members are attached to the U-shaped portions to connect the cylindrical element to the other adjacent cylindrical element. The designs include an eight crown and six crown stent which exhibit flexibility and sufficient radial strength to support the vessel.Type: GrantFiled: August 23, 2007Date of Patent: August 28, 2012Assignee: Abbott LaboratoriesInventors: Hao-Ming Hsiao, Keif Fitzgerald, Boris Anukhin
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Patent number: 8216296Abstract: 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 20, 2006Date of Patent: July 10, 2012Assignee: Abbott Vascular Solutions Inc.Inventors: Patrick P. Wu, Keif Fitzgerald, August Yambao, Michael Green
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Publication number: 20120172655Abstract: Disclosed herein are heart pumps that include a catheter assembly and that can be applied percutaneously. Some embodiments include a locking device that prevents components of the catheter assembly from being separated when in use. The catheter assembly can include an expandable tip. In some embodiments, the catheter assembly includes a housing having a wall structure, a portion of which can have a bulbuous shape or can be deformable. In other embodiments, the housing can be configured to reduce fluttering or deflection of the housing and/or to maintain a gap between the housing and an impeller blade disposed therein.Type: ApplicationFiled: January 4, 2012Publication date: July 5, 2012Inventors: Robert L. Campbell, Keif Fitzgerald, William James Harrison, Boris Leschinsky, Thomas M. Mallison, Mark W. McBride, Adam Roslund, Daniel A. Walters, Phyllis Yuen
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Publication number: 20110313509Abstract: A stent having a compacted configuration in which adjacent crowns of its undulating rings overlap one another. The overlapping compacted configuration provides for a relatively low profile in view of the coverage that is achieved by the stent upon expansion.Type: ApplicationFiled: June 22, 2010Publication date: December 22, 2011Applicant: ABBOTT CARDIOVASCULAR SYSTEMS INC.Inventors: Keif Fitzgerald, Boris Anukhin
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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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Patent number: 7938843Abstract: Cold worked nickel-titanium alloys that have linear pseudoelastic behavior without a phase transformation or onset of stress-induced martensite as applied to a medical device having a strut formed body deployed from a sheath is disclosed. In one application, an embolic protection device that employs a linear pseudoelastic nitinol self-expanding strut assembly with a small profile delivery system for use with interventional procedures is disclosed. The expandable strut assembly is covered with a filter element and both are compressed into a restraining sheath for delivery to a deployment site downstream and distal to an interventional procedure. Once at the desired site, the restraining sheath is retracted to deploy the embolic protection device, which captures flowing emboli generated during the interventional procedure. Linear pseudoelastic nitinol is used in the medical device as distinct from non-linear pseudoelastic (i.e., superelastic) nitinol.Type: GrantFiled: June 9, 2003Date of Patent: May 10, 2011Assignee: Abbott Cardiovascular Systems Inc.Inventors: John F. Boylan, Keif Fitzgerald, Zhi Cheng Lin
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Patent number: 7867271Abstract: A catheter assembly is provided having an inner member and an outer member extending along a longitudinal axis, the inner member and the outer member having a coaxial configuration and dimensioned for relative axial movement. The outer member may include an anti rotation member adapted to engage with a longitudinal slot formed on the inner member so as to maintain rotational alignment between inner member and outer member. The inner member can be made with a proximal portion made from a tubing such as hypotubing or a coil tubing. The inner member also may be made with a proximal portion made with a support mandrel. A coil tubing can be utilized to form the guide wire receiving member which is attached to the inner member.Type: GrantFiled: November 20, 2003Date of Patent: January 11, 2011Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Timothy A. Geiser, Charles R. Peterson, Andy Denison, Stephanie Klocke, Samir Patel, Joanna Lubas, Joanne Lumauig, Kathy Lind, Keif Fitzgerald
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Publication number: 20100331951Abstract: A catheter system and method for implanting an endoprosthesis such as a stent at a treatment site in a patient's body lumen. The catheter provides a complete system for stent delivery, dilatation, and delivery and/or recovery of an expandable device, such as an embolic protection device, adjacent to the treatment site in the body lumen.Type: ApplicationFiled: August 16, 2010Publication date: December 30, 2010Applicant: ABBOTT CARDIOVASCULAR SYSTEMS INC.Inventors: Nianjiong Joan Bei, Keif Fitzgerald, Patrick C. Saxton, Zhicheng Lin, Steven A. Tyler, Joanna Lubas
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Patent number: 7776080Abstract: A catheter system and method for implanting an endoprosthesis such as a stent at a treatment site in a patient's body lumen. The catheter provides a complete system for stent delivery, dilatation, and delivery and/or recovery of an expandable device, such as an embolic protection device, adjacent to the treatment site in the body lumen.Type: GrantFiled: April 25, 2007Date of Patent: August 17, 2010Assignee: Abbott Cardiovascualr Systems Inc.Inventors: Nianjiong Joan Bei, Keif Fitzgerald, Patrick C. Saxton, Zhicheng Lin, Steven A. Tyler, Joanna Lubas
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Publication number: 20100193485Abstract: Methods for making devices include providing a tubular member to be formed into a device, placing a removable sacrificial block material in the lumen of the tubular member and laser cutting the tubular member. A doping material can be added to the melted portion of the tubular member to promote the formation of brittle slag. A fixture can be used to hold a cut workpiece in order to ream sacrificial material from the surface of the workpiece. Pressurized gas can be supplied to the inner lumen of the tubular member to cause slag to form on the outside surface, rather than the inner surface, of the tubular member. A tubular member made from nickel-titanium alloy can be tightly adhered to a sacrificial sleeve utilizing the phase changes associated with nickel-titanium. A rotating mandrel can be placed within the lumen of the tubular member during laser cutting.Type: ApplicationFiled: April 9, 2010Publication date: August 5, 2010Applicant: ABBOTT CARDIOVASCULAR SYSTEMS, INC.Inventors: Boris Anukhin, Larry Baughman, Pamela A. Kramer-Brown, Neil Burkhart, Li Chen, Duane M. DeMore, Keif Fitzgerald, Gregory W. Johnson, Z. C. Lin, David Mackiewicz, Karim S. Osman, Randolf Von Oepen, William E. Webler, JR., Travis R. Yribarren
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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: 20100145433Abstract: Example embodiments include an endoprosthesis that has a first annular segment that is radially expandable and a second annular segment that is also radially expandable. An axial segment, which includes one or more struts, is operatively associated with the first annular segment and the second annular segment to maintain a specified distance between the first annular segment and the second annular segment.Type: ApplicationFiled: September 30, 2009Publication date: June 10, 2010Applicant: Abbott Cardiovascular Systems, Inc.Inventors: Boris Anukhin, Keif Fitzgerald
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Publication number: 20100125322Abstract: A stent delivery catheter system having a reinforcing tether member secured to the catheter such that the catheter is provided with an improved combination of an enhanced tensile strength together with other catheter performance characteristics such as low profile and high flexibility.Type: ApplicationFiled: November 14, 2008Publication date: May 20, 2010Applicant: ABBOTT CARDIOVASCULAR SYSTEMS INC.Inventors: Keif Fitzgerald, Leticia Castillon
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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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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: 20080269868Abstract: A catheter system and method for implanting an i such as a stent at a treatment site in a patient's body lumen. The catheter provides a complete system for stent delivery, dilatation, and delivery and/or recovery of an expandable device, such as an embolic protection device, adjacent to the treatment site in the body lumen.Type: ApplicationFiled: April 25, 2007Publication date: October 30, 2008Applicant: ABBOTT CARDIOVASCULAR SYSTEMS INC.Inventors: Nianjiong Joan Bei, Keif Fitzgerald, Patrick C. Saxton, Zhicheng Lin, Steven A. Tyler, Joanna Lubas
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Publication number: 20080228261Abstract: An expandable stent is implanted in a body lumen, such as a coronary artery, peripheral artery, or other body lumen. The stent includes a plurality of rings connected by links. The stent has a high degree of flexibility in the longitudinal direction, yet has adequate vessel wall coverage and radial strength sufficient to hold open an artery or other body lumen. The stent can be compressed or crimped onto a catheter to a very low profile since links are integrally formed from a portion of the struts forming the rings. The stent is constructed so that the cylindrical rings are very close together in order to provide maximum scaffolding, and if the stent has a drug coating, to provide a uniform drug delivery over the length of the stent. The connecting links are integrally formed from a portion of the struts forming the rings so that the links can have a maximum length thereby providing increased longitudinal flexibility of the stent.Type: ApplicationFiled: March 13, 2007Publication date: September 18, 2008Inventors: Boris Anukhin, Hao-Ming Hsiao, Keif Fitzgerald
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Publication number: 20080051877Abstract: Stent designs for use in peripheral vessels, such as the carotid arteries, are disclosed. The stents consist of a plurality of radially expandable cylindrical elements generally aligned on a common longitudinal stent axis and interconnected by one or more interconnecting members placed so that the stent is flexible in a longitudinal direction. The cylindrical elements are generally serpentine wave pattern transverse to the longitudinal axis between alternating valley portion and peak portions, the valley portion including alternating double-curved portions and U-shaped portions. The interconnecting members are attached to the double-curved portions to connect a cylindrical element to an adjacent cylindrical element and interconnecting members are attached to the U-shaped portions to connect the cylindrical element to the other adjacent cylindrical element. The designs include an eight crown and six crown stent which exhibit flexibility and sufficient radial strength to support the vessel.Type: ApplicationFiled: August 23, 2007Publication date: February 28, 2008Applicant: ABBOTT LABORATORIESInventors: Hao-Ming Hsiao, Keif Fitzgerald, Boris Anukhin