Patents Assigned to Atritech, Inc.
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Publication number: 20150374491Abstract: A method of preventing ingress of material into the left atrium of a heart includes providing a delivery sheath, advancing the sheath distal end through an opening between the right atrium and the left atrium of the heart, providing an expandable cage, delivering the expandable cage to the left atrium, and expanding the expandable cage within the left atrium. The expandable cage includes a proximal end, a distal end, and a plurality of supports extending therebetween. The expandable cage also includes a first membrane provided at its proximal end and a second membrane provided at its distal end. The expandable cage has a collapsed configuration so that it can be received within the lumen of the delivery sheath, and an expanded configuration for deployment within the heart. When expanded, the first membrane is positioned at an opening between the left and right atria of the heart, and the second membrane is positioned at the ostium of the left atrial appendage.Type: ApplicationFiled: September 4, 2015Publication date: December 31, 2015Applicant: ATRITECH, INC.Inventor: Marc S. Kreidler
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Publication number: 20150359563Abstract: Disclosed is an apparatus for facilitating access to the left atrium, and specifically the left atrial appendage. The apparatus may comprise a sheath with first and second curved sections that facilitate location of the fossa ovalis and left atrial appendage. The apparatus may further comprise tissue piercing and dilating structures. Methods are also disclosed.Type: ApplicationFiled: August 25, 2015Publication date: December 17, 2015Applicant: ATRITECH, INC.Inventors: Stewart M. Kume, Erik J. van der Burg, Alex K. Khairkhahan, Chad C. Roue, Andrew G.C. Frazier, Alan R. Klenk, Marc S. Kreidler, Darrell H. Ogi
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Publication number: 20150327979Abstract: A system and method for retrieving an implantable device includes a delivery catheter, a recapture section, and a sheath. The delivery catheter has a proximal end and a distal end. The recapture section is axially extendable from the distal end of the delivery catheter. The sheath has a proximal end and a distal end and a lumen sized to receive the delivery catheter. A portion of the lumen of the sheath is actuatable from an enlarged inside diameter to a reduced inside diameter to apply an inwardly directed force to the recapture section. The delivery catheter can be actuated with respect to the sheath to extend or retract the recapture section with respect to the delivery catheter.Type: ApplicationFiled: July 27, 2015Publication date: November 19, 2015Applicant: ATRITECH, INC.Inventors: Chris Quinn, Jin Shimada, Kevin Anderson
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Publication number: 20150313604Abstract: Disclosed is a closure catheter, for closing a tissue opening such as an atrial septal defect, patent foreman ovale, or the left atrial appendage of the heart. The closure catheter carries a plurality of tissue anchors, which may be deployed into tissue surrounding the opening, and used to draw the opening closed. Methods are also disclosed.Type: ApplicationFiled: July 14, 2015Publication date: November 5, 2015Applicant: ATRITECH, INC.Inventors: Chad C. Roue, Andrew G.C. Frazier, Michael D. Lesh, Erik J. van der Burg
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Patent number: 9168043Abstract: Disclosed is a method of preventing atrial appendage thrombus from entering the blood stream in which an occlusion device placed within the left atrial appendage inhibits compression of the left atrial appendage and facilitates tissue in-growth onto the occlusion member. The occlusion device includes an occlusion member, a plurality of supports and a plurality of barbs associated with the plurality of supports.Type: GrantFiled: August 14, 2013Date of Patent: October 27, 2015Assignee: ATRITECH, INC.Inventors: Erik J. van der Burg, Dino De Cicco, Andrew G. C. Frazier, Alex K. Khairkhahan, Marc S. Kriedler, Michael D. Lesh, Chad C. Roue
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Patent number: 9161830Abstract: Implant devices for filtering blood flowing through the ostium of an atrial appendage have component structures one or more of which are expandable. Devices with component structures in their unexpanded state have a compact size suitable for intra-cutaneous delivery to an atrial appendage situs. The expandable component structures are expanded in situ to deploy the devices. A device may have sufficiently short axial length so that most or almost all of the device length may fit within the ostium region.Type: GrantFiled: January 3, 2014Date of Patent: October 20, 2015Assignee: ATRITECH, INC.Inventors: Thomas E. Borillo, Dean A. Peterson, Gregg Sutton, Jeffrey Welch
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Patent number: 9131849Abstract: Disclosed is an apparatus for facilitating access to the left atrium, and specifically the left atrial appendage. The apparatus may comprise a sheath with first and second curved sections that facilitate location of the fossa ovalis and left atrial appendage. The apparatus may further comprise tissue piercing and dilating structures. Methods are also disclosed.Type: GrantFiled: September 16, 2005Date of Patent: September 15, 2015Assignee: ATRITECH, INC.Inventors: Alexander K. Khairkhahan, Andrew G. C. Frazier, Alan R. Klenk, Marc S. Kreidler, Stewart M. Kume, Darrell H. Ogi, Chad C. Roue, Erik J. van der Burg
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Patent number: 9132000Abstract: Apparatus for permanent placement across an ostium of a left atrial appendage in a patient, which includes a filtering membrane configured to extend across the ostium of the left atrial appendage. The filtering membrane has a permeable structure which allows blood to flow through but substantially inhibits thrombus from passing therethrough. The apparatus also includes a support structure attached to the filtering membrane which retains the filtering membrane in position across the ostium of the left atrial appendage by permanently engaging a portion of the interior wall of the left atrial appendage. The support structure may be radially expandable from a first configuration to a second configuration which engages the ostium or the interior wall of the left atrial appendage. The filtering membrane may define an opening therethrough that is configured to expand from a first size which inhibits the passage of thrombus therethrough to a second size which allows an interventional device, e.g.Type: GrantFiled: June 19, 2013Date of Patent: September 15, 2015Assignee: ATRITECH INC.Inventors: Robert A. VanTassel, Robert G. Hauser, Robert Schwartz, David Holmes, Gregg S. Sutton, Thomas E. Borillo, Jeffrey Welch
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Publication number: 20150238197Abstract: A retrieval portion is attached to an implantable device to facilitate retrieval of the implantable device in the unlikely event of embolization. The retrieval portion may comprise one or more loops, or a plurality of extensions. Methods of retrieving an implantable device are disclosed. Various adapters are disclosed for use with a conventional snare for grasping an implantable device.Type: ApplicationFiled: May 11, 2015Publication date: August 27, 2015Applicant: ATRITECH, INC.Inventors: Chris Quinn, Steve Zaver, Kevin Anderson
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Publication number: 20150230909Abstract: An implant delivery system, comprising: an implantable device comprising a plurality of supports extending between a proximal end and a distal end, the supports being moveable between a collapsed configuration and an expanded configuration, a proximal guide tube at the proximal end of the supports extending toward the distal end, and a distal guide tube at the distal end of the supports extending toward the proximal end, wherein the proximal and distal guide tubes are telescoping and become further engaged as the supports move from the collapsed to the expanded configuration.Type: ApplicationFiled: May 6, 2015Publication date: August 20, 2015Applicant: ATRITECH, INC.Inventors: Steve Zaver, Kevin Anderson, Kevin Cowden, Chris Quinn, Brian Watschke
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Patent number: 9089313Abstract: Disclosed is a closure catheter, for closing a tissue opening such as an atrial septal defect, patent foreman ovale, or the left atrial appendage of the heart. The closure catheter carries a plurality of tissue anchors, which may be deployed into tissue surrounding the opening, and used to draw the opening closed. Methods are also disclosed.Type: GrantFiled: December 9, 2013Date of Patent: July 28, 2015Assignee: ATRITECH, INC.Inventors: Chad C. Roue, Andrew G. C. Frazier, Michael D. Lesh, Erik J. van der Burg
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Patent number: 9034006Abstract: A retrieval portion is attached to an implantable device to facilitate retrieval of the implantable device in the unlikely event of embolization. The retrieval portion may comprise one or more loops, or a plurality of extensions. Methods of retrieving an implantable device are disclosed. Various adapters are disclosed for use with a conventional snare for grasping an implantable device.Type: GrantFiled: December 1, 2006Date of Patent: May 19, 2015Assignee: ATRITECH, INC.Inventors: Chris Quinn, Steve Zaver, Kevin Anderson
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Publication number: 20140148842Abstract: Disclosed is an adjustable occlusion device for use in a body lumen such as the left atrial appendage. The occlusion device is removably carried by a deployment catheter. The device may be enlarged or reduced to facilitate optimal placement or removal. Methods are also disclosed.Type: ApplicationFiled: January 24, 2014Publication date: May 29, 2014Applicant: Atritech, Inc.Inventors: Alexander K. Khairkhahan, Andrew G.C. Frazier, Alan R. Klenk, Marc S. Kreidler, Stewart M. Kume, Darrell H. Ogi, Chad C. Roue, Erik J. van der Burg, Dino DeCicco, Michael D. Lesh
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Publication number: 20140107696Abstract: Implant devices for filtering blood flowing through the ostium of an atrial appendage have component structures one or more of which are expandable. Devices with component structures in their unexpanded state have a compact size suitable for intra-cutaneous delivery to an atrial appendage situs. The expandable component structures are expanded in situ to deploy the devices. A device may have sufficiently short axial length so that most or almost all of the device length may fit within the ostium region.Type: ApplicationFiled: January 3, 2014Publication date: April 17, 2014Applicant: Atritech, Inc.Inventors: Thomas E. Borillo, Dean Peterson, Gregg S. Sutton, Jeffrey Welch
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Patent number: 8685055Abstract: Apparatus for permanent placement across an ostium of a left atrial appendage in a patient, which includes a filtering membrane configured to extend across the ostium of the left atrial appendage. The filtering membrane has a permeable structure which allows blood to flow through but substantially inhibits thrombus from passing therethrough. The apparatus also includes a support structure attached to the filtering membrane which retains the filtering membrane in position across the ostium of the left atrial appendage by permanently engaging a portion of the interior wall of the left atrial appendage. The support structure may be radially expandable from a first configuration to a second configuration which engages the ostium or the interior wall of the left atrial appendage. The filtering membrane may define an opening therethrough that is configured to expand from a first size which inhibits the passage of thrombus therethrough to a second size which allows an interventional device, e.g.Type: GrantFiled: September 4, 2003Date of Patent: April 1, 2014Assignee: Atritech, Inc.Inventors: Robert A VanTassel, Robert G Hauser, Robert Schwartz, David Holmes, Gregg S Sutton, Thomas E Borillo, Jeffrey Welch
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Patent number: 8663268Abstract: A method for accessing the left atrial appendage with a balloon-tipped transseptal sheath is disclosed. A transseptal sheath is delivered to the left atrium through the intraatrial septum from the right atrium. The balloon tip may be inflated to prevent the transseptal sheath from falling proximally into the right atrium. The inflated balloon tip permits safe probing and exploration of the left atrial appendage and facilitates safe maintenance of the position of the transseptal sheath within the left atrial appendage while delivering an implantable device to the left atrial appendage.Type: GrantFiled: February 23, 2012Date of Patent: March 4, 2014Assignee: Atritech, Inc.Inventors: Chris Quinn, Jin Shimada
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Patent number: 8663273Abstract: Disclosed is an adjustable occlusion device for use in a body lumen such as the left atrial appendage. The occlusion device is removably carried by a deployment catheter. The device may be enlarged or reduced to facilitate optimal placement or removal. Methods are also disclosed.Type: GrantFiled: October 17, 2011Date of Patent: March 4, 2014Assignee: Atritech, Inc.Inventors: Alexander K. Khairkhahan, Andrew G. C. Frazier, Alan R. Klenk, Marc S. Kreidler, Stewart M. Kume, Darrell H. Ogi, Chad C. Roue, Erik J. van der Burg, Dino DeCicco, Michael D. Lesh
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Patent number: 8647361Abstract: Implant devices for filtering blood flowing through the ostium of an atrial appendage have component structures one or more of which are expandable. Devices with component structures in their unexpanded state have a compact size suitable for intra-cutaneous delivery to an atrial appendage situs. The expandable component structures are expanded in situ to deploy the devices. A device may have sufficiently short axial length so that most or almost all of the device length may fit within the ostium region.Type: GrantFiled: June 11, 2012Date of Patent: February 11, 2014Assignee: Atritech, Inc.Inventors: Thomas E. Borillo, Dean Peterson, Gregg S. Sutton, Jeffrey Welch
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Patent number: 8603108Abstract: Disclosed is a closure catheter, for closing a tissue opening such as an atrial septal defect, patent foreman ovale, or the left atrial appendage of the heart. The closure catheter carries a plurality of tissue anchors, which may be deployed into tissue surrounding the opening, and used to draw the opening closed. Methods are also disclosed.Type: GrantFiled: May 22, 2012Date of Patent: December 10, 2013Assignee: Atritech, Inc.Inventors: Chad C. Roue, Andrew G. C. Frazier, Michael D. Lesh, Erik J. van der Burg
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Patent number: 8535343Abstract: Disclosed is an occlusion device for use in a body lumen such as the left atrial appendage. The occlusion device includes a pumpable injectable material and a retention member having a tissue penetrating shaft which extends from a proximal end of the device to a distal end of the device.Type: GrantFiled: May 17, 2011Date of Patent: September 17, 2013Assignee: Atritech, Inc.Inventors: Erik J. van der Burg, Dino De Cicco, Andrew G. C. Frazier, Alex K. Khairkahan, Marc S. Kriedler, Michael D. Lesh, Chad C. Roue