Patents by Inventor David A. Rahdert

David A. Rahdert 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).

  • Publication number: 20090287179
    Abstract: Implants or systems of implants and methods apply a selected force vector or a selected combination of force vectors within or across the left atrium, which allow mitral valve leaflets to better coapt. The implants or systems of implants and methods make possible rapid deployment, facile endovascular delivery, and full intra-atrial retrievability. The implants or systems of implants and methods also make use of strong fluoroscopic landmarks. The implants or systems of implants and methods make use of an adjustable implant and a fixed length implant. The implants or systems of implants and methods may also utilize a bridge stop to secure the implant, and the methods of implantation employ various tools.
    Type: Application
    Filed: July 22, 2009
    Publication date: November 19, 2009
    Inventors: Timothy R. Machold, Robert T. Chang, John A. Macoviak, David A. Rahdert
  • Publication number: 20090228099
    Abstract: Devices, systems and methods retain a native heart valve leaflet to prevent retrograde flow. The devices, systems, and methods employ an implant that, in use, rests adjacent a valve annulus and includes a retaining structure that is sized and shaped to overlay at least a portion of one or more native valve leaflets. The retaining structure retains the leaflet or leaflets it overlays, to resist leaflet eversion and/or prolapse. In this way, the implant prevents or reduces regurgitation. The implant does not interfere significantly with the opening of and blood flow through the leaflets during periods of antegrade flow.
    Type: Application
    Filed: April 23, 2009
    Publication date: September 10, 2009
    Inventors: David A. Rahdert, John A. Macoviak, Timothy R. Machold, Robert T. Chang, Rick A. Soss
  • Patent number: 7527646
    Abstract: Devices, systems and methods retain a native heart valve leaflet to prevent retrograde flow. The devices, systems, and methods employ an implant that, in use, rests adjacent a valve annulus and includes a retaining structure that is sized and shaped to overlay at least a portion of one or more native valve leaflets. The retaining structure retains the leaflet or leaflets it overlays, to resist leaflet eversion and/or prolapse. In this way, the implant prevents or reduces regurgitation. The implant does not interfere significantly with the opening of and blood flow through the leaflets during periods of antegrade flow.
    Type: Grant
    Filed: October 1, 2003
    Date of Patent: May 5, 2009
    Assignee: Ample Medical, Inc.
    Inventors: David A. Rahdert, John A. Macoviak, Timothy R. Machold, Robert T. Chang, Rick A. Soss
  • Publication number: 20090069885
    Abstract: Implants or systems of implants and methods apply an upward and inward force producing a minor axis force projection vector within or across the left atrium, which allow mitral valve leaflets to better coapt. The implants or systems of implants and methods make possible rapid deployment, facile endovascular delivery, and full intra-atrial retrievability. The implants or systems of implants and methods also make use of strong fluoroscopic landmarks. The implants or systems of implants and methods make use of an adjustable implant. The implants or systems of implants and methods may also utilize a bridge stop to secure the implant, and the methods of implantation employ various tools.
    Type: Application
    Filed: September 19, 2008
    Publication date: March 12, 2009
    Inventors: David A. Rahdert, Timothy R. Machold, Robert T. Chang
  • Publication number: 20090043381
    Abstract: Methods, devices and systems are disclosed to treat atrioventricular valve regurgitation accessed through the vasculature, and by standard and minimally invasive surgical techniques. Isolated leaflet fixation and annulus treatment systems are developed.
    Type: Application
    Filed: October 5, 2005
    Publication date: February 12, 2009
    Inventors: John A. Macoviak, Robert T. Chang, Alden Harken, Timothy R. Machold, David A. Rahdert
  • Publication number: 20080140188
    Abstract: Devices, systems, and methods employ a heart implant structure that is sized and configured to be positioned in a left atrium above the plane of a native mitral heart valve annulus to affect mitral heart valve function. The implant structure includes a portion sized and configured to engage a wall of the left atrium above the plane of the native mitral valve annulus and to extend across the left atrium along a minor axis of the annulus.
    Type: Application
    Filed: October 31, 2007
    Publication date: June 12, 2008
    Inventors: David A. Rahdert, Timothy R. Machold, John A. Macoviak, Robert T. Chang
  • Publication number: 20080140190
    Abstract: An implant is sized and configured to be positioned in a left atrium above the plane of a native mitral heart valve annulus having leaflets. The implant, when deployed, engages a wall of the left atrium above the plane of the native mitral valve annulus to interact with movement of the leaflets of the mitral heart valve to affect mitral heart valve function. The implant is deployed into the left atrium through an intravascular access path that extends from a right atrium through a septum and into a left atrium.
    Type: Application
    Filed: October 25, 2007
    Publication date: June 12, 2008
    Inventors: John A. Macoviak, Robert T. Chang, Timothy R. MacHold, David A. Rahdert, Rick A. Soss
  • Patent number: 7381220
    Abstract: Devices, systems and methods supplement, repair, or replace a native heart valve. The devices, systems, and methods employ an implant that, in use, extends adjacent a valve annulus. The implant includes a mobile neoleaflet element that occupies the space of at least a portion of one native valve leaflet. The implant mimics the one-way valve function of a native leaflet, to resist or prevent retrograde flow. The implant restores normal coaptation of the leaflets to resist retrograde flow, thereby resisting eversion and/or prolapse, which, in turn, reduces regurgitation.
    Type: Grant
    Filed: October 1, 2003
    Date of Patent: June 3, 2008
    Assignee: Ample Medical, Inc.
    Inventors: John A. Macoviak, Robert T. Chang, David A. Rahdert, Timothy R. Machold, Rick A. Soss
  • Patent number: 7291168
    Abstract: The present invention is a group of medical devices designed to improve heart valve function. The medical devices may be used individually, or in combination to supplement damaged valves, replace damaged valves, or improve damaged valves function. The medical devices include leaflet retainers, a neo-annulus, neo-leaflet, and a framework. In addition, the present invention is novel methods for surgically treating heart valves.
    Type: Grant
    Filed: October 28, 2003
    Date of Patent: November 6, 2007
    Assignee: Ample Medical, Inc.
    Inventors: John A. Macoviak, Robert T. Chang, Timothy R. Machold, David A. Rahdert, Rick A. Soss
  • Publication number: 20040260393
    Abstract: Devices, systems, and methods employ an implant that is sized and configured to attach in, on, or near the annulus of a dysfunctional heart valve. In use, the implant extends either across the minor axis of the annulus, or across the major axis of the annulus, or both. The implant restores to the heart valve annulus and leaflets a more functional anatomic shape and tension. The more functional anatomic shape and tension are conducive to coaptation of the leaflets, which, in turn, reduces retrograde flow or regurgitation.
    Type: Application
    Filed: May 14, 2004
    Publication date: December 23, 2004
    Applicant: Ample Medical, Inc.
    Inventors: David A. Rahdert, Timothy R. Machold, John A. Macoviak, Robert T. Chang
  • Publication number: 20040243107
    Abstract: The devices of the present invention form a platform, or scaffold for the precise delivery of various forms of energy for treatment of atrial fibrilation. Additionally, the devices of the present invention form a scaffold for the precise delivery of fluids to surrounding tissues. The use of additional energy sources can improve the delivery of various fluids into the surrounding tissue.
    Type: Application
    Filed: June 24, 2004
    Publication date: December 2, 2004
    Inventors: John A Macoviak, David A Rahdert
  • Publication number: 20040138745
    Abstract: The present invention is a group of medical devices designed to improve heart valve function. The medical devices may be used individually, or in combination to supplement damaged valves, replace damaged valves, or improve damaged valves function. The medical devices include leaflet retainers, a neo-annulus, neo-leaflet, and a framework. In addition, the present invention is novel methods for surgically treating heart valves.
    Type: Application
    Filed: October 28, 2003
    Publication date: July 15, 2004
    Applicant: Ample Medical, Inc.
    Inventors: John A. Macoviak, Robert T. Chang, Timothy R. Machold, David A. Rahdert, Rick A. Soss
  • Publication number: 20040127981
    Abstract: Devices, systems and methods retain a native heart valve leaflet to prevent retrograde flow. The devices, systems, and methods employ an implant that, in use, rests adjacent a valve annulus and includes a retaining structure that is sized and shaped to overlay at least a portion of one or more native valve leaflets. The retaining structure retains the leaflet or leaflets it overlays, to resist leaflet eversion and/or prolapse. In this way, the implant prevents or reduces regurgitation. The implant does not interfere significantly with the opening of and blood flow through the leaflets during periods of antegrade flow.
    Type: Application
    Filed: October 1, 2003
    Publication date: July 1, 2004
    Applicant: Ample Medical, Inc.
    Inventors: David A. Rahdert, John A. Macoviak, Timothy R. Machold, Robert T. Chang, Rick A. Soss
  • Publication number: 20040127982
    Abstract: Devices, systems, and methods employ an implant that is sized and configured to attach to the annulus of a dysfunctional heart valve annulus. In use, the implant extends across the major axis of the annulus above and/or along the valve annulus. The implant reshapes the major axis dimension and/or other surrounding anatomic structures. The implant restores to the heart valve annulus and leaflets a more functional anatomic shape and tension. The more functional anatomic shape and tension are conducive to coaptation of the leaflets, which, in turn, reduces retrograde flow or regurgitation. The implant improves function to the valve, without surgically cinching, resecting, and/or fixing in position large portions of a dilated annulus, or without the surgical fixation of ring-like structures.
    Type: Application
    Filed: October 1, 2003
    Publication date: July 1, 2004
    Applicant: Ample Medical, Inc.
    Inventors: Timothy R. Machold, David A. Rahdert, John A. Macoviak, Robert T. Chang, Rick A. Soss
  • Patent number: 6695877
    Abstract: A bifurcated stent comprises a first stent section and a second stent section. Each stent section is expandable from a predeployed state to a deployed state independently from one another. The second stent section having an end engaged to a receiving region of the first stent section. In the deployed state the first stent section defines a primary flow path and the second stent section defines a secondary flow path in fluid communication with the first flow path. At least a portion of one or both the first stent section and second stent section is constructed from a wire member.
    Type: Grant
    Filed: February 26, 2002
    Date of Patent: February 24, 2004
    Assignee: SciMed Life Systems
    Inventors: Gregory G. Brucker, Todd Hall, Enrique Malaret, David Byrd, Gerald Hubbs, Gregory Furnish, Josh Barber, Indaka Gunasekara, Benjamin Morris, Valerie Futral, Sava A. Chernomordik, William C. Mers Kelly, William A. Reuss, Jr., Simon Furnish, Michael W. Wilson, Hacene Bouadi, John C. Muskivitch, Matthew L. Pease, David A. Rahdert, Travis Rowe, Gregory M. Ruhf, Brandon G. Walsh, Claude Vidal, Thomas Banks, Russ Redmond
  • Publication number: 20030097169
    Abstract: Systems for delivering a bifurcated stent to a bifurcation site comprise catheters and/or bifurcated stents delivered therefrom.
    Type: Application
    Filed: February 26, 2002
    Publication date: May 22, 2003
    Inventors: Gregory G. Brucker, Enrique Malaret, Todd Hall, David Byrd, Gerald Hubbs, Gregory Furnish, Josh Barber, Indaka Gunasekara, Benjamin Morris, Valerie Futral Maron, Sava A. Chernomordik, William C. Mers Kelly, William A. Reuss, Simon Furnish, Michael W. Wilson, Hacene Bouadi, John C. Muskivitch, Matthew L. Pease, David A. Rahdert, Travis Rowe, Gregory M. Ruhf, Brandon G. Walsh, Claude A. Vidal, Thomas Banks, Russ J. Redmond
  • Publication number: 20020193873
    Abstract: Systems for delivering a bifurcated stent to a bifurcation site comprise catheters and/or bifurcated stents delivered therefrom.
    Type: Application
    Filed: February 26, 2002
    Publication date: December 19, 2002
    Inventors: Gregory G. Brucker, Enrique Malaret, Thomas Banks, Russ J. Redmond, Claude A. Vidal, Todd Hall, David Byrd, Gerald Hubbs, Gregory Furnish, Josh Barber, Indaka Gunasekara, Benjamin Morris, Valerie Futral, Sava A. Chernomordik, William C. Mers Kelly, William A. Reuss, Simon Furnish, Michael W. Wilson, Hacene Bouadi, John C. Muskivitch, Matthew L. Pease, David A. Rahdert, Travis Rowe, Gregory M. Ruhf, Brandon G. Walsh
  • Publication number: 20020173840
    Abstract: A bifurcated stent comprises a first stent section and a second stent section. Each stent section is expandable from a predeployed state to a deployed state independently from one another. The second stent section having an end engaged to a receiving region of the first stent section. In the deployed state the first stent section defines a primary flow path and the second stent section defines a secondary flow path in fluid communication with the first flow path. At least a portion of one or both the first stent section and second stent section is constructed from a wire member.
    Type: Application
    Filed: February 26, 2002
    Publication date: November 21, 2002
    Inventors: Gregory G. Brucker, Todd Hall, Enrique Malaret, David Byrd, Gerald Hubbs, Gregory Furnish, Josh Barber, Indaka Gunasekara, Benjamin Morris, Valerie Futral, Sava A. Chernomordik, William C. Mers Kelly, William A. Reuss, Simon Furnish, Michael W. Wilson, Hacene Bouadi, John C. Muskivitch, Matthew L. Pease, David A. Rahdert, Travis Rowe, Gregory M. Ruhf, Brandon G. Walsh, Thomas Banks, Russ Redmond, Claude Vidal
  • Publication number: 20020103445
    Abstract: The present invention relates, generally, to thermography catheters and, more particularly, to thermography catheters which use flex circuit technology to create the connections and thermocouples used to detect hot spots (areas with high metabolic activity) of the atherosclerotic plaque, vascular lesions, and aneurysms in human vessels.
    Type: Application
    Filed: August 24, 2001
    Publication date: August 1, 2002
    Inventors: David A. Rahdert, Michael Perry, Brett A. Herscher, Joseph Fjelstad, Thomas H. Campbell
  • Publication number: 20020082515
    Abstract: Interventional tools are described that are suitable for measuring the temperature of or temperature variations in a vessel wall in the body of a patient and thereafter treating vulnerable plaque that is identified during the thermal mapping. The described interventional tools all include one or more thermal sensors that are suitable for detecting an indication of the temperature of or temperature variations in walls of a vessel the tool is inserted into. These sensors may be used to facilitate the detection of vulnerable plaque within the vessel. In one aspect, the interventional tool includes a stent delivery device that is suitable for delivering a stent to a selected segment of a vessel the interventional tool is inserted into. In an alternative aspect the interventional tool includes a deployment lumen. The deployment lumen is sized suitably for receiving a stent delivery catheter therethrough.
    Type: Application
    Filed: May 3, 2001
    Publication date: June 27, 2002
    Inventors: Thomas H. Campbell, William L. Sweet, David A. Rahdert