Patents Assigned to Atritech, Inc.
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Patent number: 10898198Abstract: 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: GrantFiled: November 24, 2017Date of Patent: January 26, 2021Assignee: Atritech, Inc.Inventors: Steve Zaver, Kevin Anderson, Kevin Cowden, Chris Quinn, Brian Watschke
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Patent number: 10893926Abstract: 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, 2015Date of Patent: January 19, 2021Assignee: 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: 10751158Abstract: Instrumentation for percutaneous delivery of blood filtration devices to atrial appendages includes a curved access sheath and a delivery tube. A compressed filter device attached to a tether wire is loaded in the delivery tube. The access sheath and the delivery tube can be mechanically locked and moved together to place the device in a suitable deployment position. The device is deployed by expelling it from the delivery tube either by retracting the delivery tube over the tether wire, or by moving the tether wire forward through the delivery tube. A filter membrane in the deployed device extends across the appendage ostium to filter blood flow through the ostium. The filter membrane is configured to present a flat surface to atrial blood flow past the ostium.Type: GrantFiled: January 8, 2018Date of Patent: August 25, 2020Assignee: Atritech, Inc.Inventors: Gregg S. Sutton, Jeffrey Welch, Dean A. Peterson, John B. Bridgeman, Bruce R. Youngberg
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Patent number: 10278805Abstract: 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: September 25, 2015Date of Patent: May 7, 2019Assignee: ATRITECH, INC.Inventors: Thomas E. Borillo, Dean Peterson, Gregg S. Sutton, Jeffrey Welch
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Patent number: 10143458Abstract: 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: GrantFiled: September 9, 2016Date of Patent: December 4, 2018Assignee: ATRITECH, INC.Inventor: Marc S. Kreidler
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Patent number: 10076335Abstract: 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: GrantFiled: May 6, 2015Date of Patent: September 18, 2018Assignee: ATRITECH, INC.Inventors: Steve Zaver, Kevin Anderson, Kevin Cowden, Chris Quinn, Brian Watschke
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Publication number: 20180140413Abstract: 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: January 22, 2018Publication date: May 24, 2018Applicant: ATRITECH, INC.Inventors: Chris Quinn, Jin Shimada, Kevin Anderson
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Publication number: 20180140412Abstract: Instrumentation for percutaneous delivery of blood filtration devices to atrial appendages includes a curved access sheath and a delivery tube. A compressed filter device attached to a tether wire is loaded in the delivery tube. The access sheath and the delivery tube can be mechanically locked and moved together to place the device in a suitable deployment position. The device is deployed by expelling it from the delivery tube either by retracting the delivery tube over the tether wire, or by moving the tether wire forward through the delivery tube. A filter membrane in the deployed device extends across the appendage ostium to filter blood flow through the ostium. The filter membrane is configured to present a flat surface to atrial blood flow past the ostium.Type: ApplicationFiled: January 8, 2018Publication date: May 24, 2018Applicant: ATRITECH, INC.Inventors: Gregg S. Sutton, Jeffrey Welch, Dean A. Peterson, John B. Bridgeman, Bruce R. Youngberg
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Patent number: 9943299Abstract: 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: January 24, 2014Date of Patent: April 17, 2018Assignee: 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: 20180070950Abstract: 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: November 24, 2017Publication date: March 15, 2018Applicant: ATRITECH, INC.Inventors: Steve Zaver, Kevin Anderson, Kevin Cowden, Chris Quinn, Brian Watschke
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Patent number: 9913652Abstract: An implantable medical device for insertion in the left atrial appendage includes a cap coupled to a frame. The cap constrains movement of the legs of the frame during collapse and expansion of the device, such that the device can be deployed, recalled and redeployed without the device being damaged or the legs of the frame getting tangled.Type: GrantFiled: November 13, 2015Date of Patent: March 13, 2018Assignee: Atritech, Inc.Inventors: John B. Bridgeman, Gregg Sutton, Christopher J. Clark
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Publication number: 20170100112Abstract: Disclosed is an occlusion device for use in a body lumen such as the left atrial appendage. The occlusion device includes an occlusion member and may also include a stabilizing member. The stabilizing member inhibits compression of the left atrial appendage, facilitating tissue in-growth onto the occlusion member. Methods are also disclosed.Type: ApplicationFiled: October 25, 2016Publication date: April 13, 2017Applicant: ATRITECH, INC.Inventors: Erik J. van der Burg, Dino De Cicco, Andrew G.C. Frazier, Alexander K. Khairkhahan, Marc S. Kreidler, Michael D. Lesh, Chad C. Roue
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Publication number: 20160374657Abstract: 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 9, 2016Publication date: December 29, 2016Applicant: ATRITECH, INC.Inventor: Marc S. Kreidler
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Patent number: 9445895Abstract: 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: GrantFiled: September 4, 2015Date of Patent: September 20, 2016Assignee: ATRITECH, INC.Inventor: Marc S. Kreidler
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Patent number: 9421004Abstract: 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: July 14, 2015Date of Patent: August 23, 2016Assignee: ATRITECH INC.Inventors: Chad C. Roue, Andrew G. C. Frazier, Michael D. Lesh, Erik J. van der Burg
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Publication number: 20160106437Abstract: Disclosed is an occlusion device for use in a body lumen such as the left atrial appendage. The occlusion device includes an occlusion member and may also include a stabilizing member. The stabilizing member inhibits compression of the left atrial appendage, facilitating tissue in-growth onto the occlusion member. Methods are also disclosed.Type: ApplicationFiled: October 26, 2015Publication date: April 21, 2016Applicant: 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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Publication number: 20160066922Abstract: An implantable medical device for insertion in the left atrial appendage includes a cap coupled to a frame. The cap constrains movement of the legs of the frame during collapse and expansion of the device, such that the device can be deployed, recalled and redeployed without the device being damaged or the legs of the frame getting tangled.Type: ApplicationFiled: November 13, 2015Publication date: March 10, 2016Applicant: ATRITECH, INC.Inventors: John B. Bridgeman, Gregg Sutton, Christopher J. Clark
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Publication number: 20160058539Abstract: 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: ApplicationFiled: September 4, 2015Publication date: March 3, 2016Applicant: 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: 20160051358Abstract: Instrumentation for percutaneous delivery of blood filtration devices to atrial appendages includes a curved access sheath and a delivery tube. The curved access sheath is coursed through the patient's vasculature to gain transseptal access to a left atrial appendage. A compressed filter device attached to a tether wire is loaded in the delivery tube. The loaded delivery tube is advanced through the pre-positioned access sheath to place the device in a deployment position. The access sheath and the delivery tube can be mechanically locked and moved together to place the device in a suitable deployment position. The device is deployed by expelling it from the delivery tube either by retracting the delivery tube over the tether wire, or by moving the tether wire forward through the delivery tube. The expelled device, which is not constrained by the delivery tube walls, self expands to its useful size in the subject atrial appendage.Type: ApplicationFiled: July 22, 2015Publication date: February 25, 2016Applicant: ATRITECH, INC.Inventors: Gregg S. Sutton, Jeffrey Welch, Dean A. Peterson, John B. Bridgeman, Bruce R. Youngberg
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Publication number: 20160008122Abstract: 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: September 25, 2015Publication date: January 14, 2016Applicant: ATRITECH, INC.Inventors: Thomas E. Borillo, Dean Peterson, Gregg S. Sutton, Jeffrey Welch