Patents by Inventor William E. Cohn

William E. Cohn 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: 20080009887
    Abstract: Surgical tools for off-pump surgery are described herein. In an embodiment, a surgical connector for coupling an organ to a medical device comprises an inner body. The surgical connector further comprises an outer hollow body slidably disposed around said inner body. Moreover, the connector comprises a distal sealing member disposed around said inner body. The distal sealing member has a collapsed position and an expanded position. The distal sealing member is also capable of being locked in said expanded position. The surgical connector further comprises a proximal sealing member disposed around said outer hollow body, said proximal sealing member is proximal to said distal sealing member. The disclosed surgical connector employs a novel press-fit mechanism. The press-fit mechanism allows a surgeon to attach the connector to an organ without the use of sutures. The surgical connector also incorporates an expandable sealing member that can be locked into the expanded position.
    Type: Application
    Filed: June 28, 2007
    Publication date: January 10, 2008
    Applicant: SEMMT, INC.
    Inventor: William E. COHN
  • Publication number: 20080009668
    Abstract: Novel surgical devices for off-pump surgery are described herein. The disclosed apparatus employs a novel suction element that releasably couples to a surgical connector. In an embodiment, a surgical device comprises a suction element adapted to be releasably coupled to a surgical connector. The suction element has an opening for stabilizing said surgical connector against the surface of an organ by suction. The surgical device further comprises a flexible arm connected to the suction element. The flexible arm is capable of being fixed in a stationary position to hold the surgical connector and the organ in place. The novel suction element in combination with a flexible arm not only positions and stabilizes an organ during surgery, but also positions and stabilizes the surgical connector on the organ during a surgical procedure such as an LVAD implantation.
    Type: Application
    Filed: June 28, 2007
    Publication date: January 10, 2008
    Applicant: SEMMT, INC.
    Inventor: William E. COHN
  • Publication number: 20080009891
    Abstract: Novel surgical tools and methods for off-pump surgery are described herein. A novel coring system is disclosed which employs a balloon catheter and a coring tool which is adapted to be threaded on to a guide wire. The guide wire serves as a track upon which the coring tool is guided. Embodiments of the coring tool ensure complete removal and excision of cored tissue. In addition, the described coring system prevents blood loss during off-pump surgery. In an embodiment, a surgical coring tool comprises a hollow body having an open distal end and a closed proximal end. The open distal end has a cutting edge. The hollow body comprises a vacuum connection to apply suction from said hollow body. The surgical coring tool also comprises a hollow elongate member disposed coaxially within said hollow body. The elongate member is adapted to be inserted on to a guide wire.
    Type: Application
    Filed: June 28, 2007
    Publication date: January 10, 2008
    Applicant: SEMMT, INC.
    Inventor: William E. COHN
  • Publication number: 20070208214
    Abstract: A device for delivery of a cardiac support device for treating cardiac disease of a heart includes a multistage deployment mechanism and an actuating mechanism for controlling the positions of the deployment mechanism. The deployment mechanism is operable to change between a retracted state and an extended state, and includes a plurality of independent stages, including, in one embodiment, a first stage including a guide structure for location adjacent a portion of the patient's heart when in the extended state. A second stage is movably coupled to the first stage, and is guided by the guide structure between the retracted and extended states. The second stage further releasably engages and supports the cardiac support device and positions the cardiac support device at the desired implantation location, guided by the guide structure of the stage. In some embodiments, the deployment mechanism may include additional stages.
    Type: Application
    Filed: March 3, 2006
    Publication date: September 6, 2007
    Applicant: Acorn Cardiovascular, Inc.
    Inventors: Aaron J. Hjelle, Paul A. Pignato, Robert G. Walsh, William E. Cohn, Ann Margaret Thomas
  • Patent number: 7241310
    Abstract: A method and device for reducing mitral regurgitation. An elongated body is positioned in a coronary sinus of a patient in a vicinity of a heart mitral valve posterior leaflet. The body is adapted to straighten a natural curvature of at least a portion of the coronary sinus in the vicinity of the posterior leaflet to move a posterior annulus anteriorly, which in turn moves the posterior leaflet anteriorly, thereby to improve leaflet coaptation.
    Type: Grant
    Filed: January 14, 2003
    Date of Patent: July 10, 2007
    Inventors: Daniel C. Taylor, William E. Cohn, John R. Liddicoat, Steven B. Woolfson, Todd F. Davenport, Richard B. Streeter, Thomas F. Kordis, Jonathan Rourke
  • Patent number: 7201761
    Abstract: Apparatus for resecting a diseased heart valve, the apparatus comprising: a body portion; a first handle and a second handle; a cutting blade; a set of retaining arms; a pass-off tool having a first attachment device configured to selectively engage the first handle attached to the body portion so as to allow placement of the second handle of the body portion adjacent to the diseased heart valve; and a controller tool having a second attachment device at the distal end thereof, the second attachment device configured to selectively engage the second handle attached to the body portion so as to allow positioning of the body portion adjacent to the diseased heart valve, a cutting blade actuator configured to cause the cutting blade to selectively rotate, and a retaining arm actuator configured to selectively position the set of retaining arms from a contracted state to an expanded state.
    Type: Grant
    Filed: April 16, 2003
    Date of Patent: April 10, 2007
    Assignee: Medtronic, Inc.
    Inventors: Steven B. Woolfson, Richard B. Streeter, Daniel C. Taylor, William E. Cohn
  • Patent number: 7186264
    Abstract: A method and apparatus for reducing mitral regurgitation. The apparatus is inserted into the coronary sinus of a patient in the vicinity of the posterior leaflet of the mitral valve, the apparatus being adapted to straighten the natural curvature of at least a portion of the coronary sinus in the vicinity of the posterior leaflet of the mitral valve, whereby to move the posterior annulus anteriorly and thereby improve leaflet coaptation and reduce mitral regurgitation.
    Type: Grant
    Filed: March 29, 2002
    Date of Patent: March 6, 2007
    Assignee: Viacor, Inc.
    Inventors: John R. Liddicoat, Daniel C. Taylor, Richard B. Streeter, Steven B. Woolfson, William E. Cohn, Todd F. Davenport
  • Patent number: 7125420
    Abstract: A method and apparatus for reducing mitral regurgitation. The apparatus is inserted into the coronary sinus of a patient in the vicinity of the posterior leaflet of the mitral valve, the apparatus being adapted to straighten the natural curvature of at least a portion of the coronary sinus in the vicinity of the posterior leaflet of the mitral valve, whereby to move the posterior annulus anteriorly and thereby improve leaflet coaptation and reduce mitral regurgitation.
    Type: Grant
    Filed: May 27, 2003
    Date of Patent: October 24, 2006
    Assignee: Viacor, Inc.
    Inventors: Jonathan Rourke, John R. Liddicoat, Daniel C. Taylor, William E. Cohn
  • Patent number: 7052487
    Abstract: A method for reducing mitral regurgitation includes deploying deforming matter into a selected one of (i) a mitral valve annulus adjacent a posterior leaflet, and (ii) tissue adjacent the mitral valve annulus and proximate the posterior leaflet, to cause conformational change in the mitral valve annulus to increase mitral valve leaflet coaptation.
    Type: Grant
    Filed: October 25, 2002
    Date of Patent: May 30, 2006
    Inventors: William E. Cohn, John R. Liddicoat, Steven B. Woolfson, Todd F. Davenport, Richard B. Streeter
  • Patent number: 6890353
    Abstract: Apparatus for reducing mitral regurgitation, by applying a force to the wall of the coronary sinus so as to force the posterior leaflet anteriorly and thereby reduce mitral regurgitation.
    Type: Grant
    Filed: March 22, 2002
    Date of Patent: May 10, 2005
    Assignee: Viacor, Inc.
    Inventors: William E. Cohn, John R. Liddicoat, Richard B. Streeter, Daniel C. Taylor, Steven B. Woolfson
  • Publication number: 20040236360
    Abstract: The present invention provides catheter apparatus and catheterization methodology for generating an arteriovenous fistula or a veno-venous fistula on-demand between closely associated blood vessels and at a chosen anatomic site in-vivo. The catheter apparatus is preferably employed in pairs, each catheter of the pair being suitable for percutaneous introduction into and extension through a blood vessel. The catheterization methodology employs the catheter apparatus preferably in conjunction with conventional radiological techniques in order to place, verify, and confirm a proper alignment, orientation, and positioning for the catheters in-vivo prior to activating the perforation means for generating a fistula.
    Type: Application
    Filed: November 14, 2003
    Publication date: November 25, 2004
    Applicant: Trans Vascular, Inc.
    Inventors: William E. Cohn, Ducksoo Kim
  • Publication number: 20040193190
    Abstract: Apparatus for reconfiguring tissue, the apparatus comprising a shaft having a distal end and a proximal end; at least one effector mechanism movably mounted to the distal end of the shaft, each effector mechanism comprising at least one gripping element for gripping tissue to that effector mechanism, the at least one effector mechanism being configured to capture the gripped tissue against said shaft, at least one actuating mechanism mounted to the proximal end of the shaft, and at least one connection mechanism connecting the at least one actuating mechanism to the at least one effector mechanism, whereby a user may utilize the at least one actuating mechanism to actuate the at least one effector mechanism so as to reconfigure tissue.
    Type: Application
    Filed: December 1, 2003
    Publication date: September 30, 2004
    Inventors: John R. Liddicoat, William E. Cohn
  • Patent number: 6790231
    Abstract: Apparatus for reducing mitral regurgitation, including a bendable elongated body adapted to be inserted into the coronary sinus of a patient in the vicinity of the posterior leaflet of the mitral valve, the elongated body being adjustable between a first configuration adapted to be delivered into the coronary sinus and a second configuration adapted to exert a force onto the posterior annulus. The body includes a flexible spine having a proximal end and a distal end, and a flexible wire mounted on the spine and having a distal end fixed to the spine proximate to the distal end of the spine, and having a proximal portion extending from the proximal end of the spine. Axial movement of the wire causes a change in the spine from the first configuration to the second configuration to exert the force on the posterior annulus and thereby reduce mitral regurgitation.
    Type: Grant
    Filed: February 5, 2002
    Date of Patent: September 14, 2004
    Assignee: Viacor, Inc.
    Inventors: John R. Liddicoat, Steven B. Woolfson, Richard B. Streeter, William E. Cohn
  • Patent number: 6769434
    Abstract: A method for deploying an aortic valve prosthesis includes the steps of: making a first opening leading to the left atrium; passing the valve prosthesis through the opening and into a cardiac chamber of the left side of the heart using a first manipulation instrument; making a second opening in the arterial system and advancing one end of a second manipulation instrument through the arterial opening and into the cardiac chamber; securing the second manipulation instrument to the valve prosthesis; and using the second manipulation instrument to retract at least a portion of the valve prosthesis out of the cardiac chamber.
    Type: Grant
    Filed: June 29, 2001
    Date of Patent: August 3, 2004
    Assignee: Viacor, Inc.
    Inventors: John R. Liddicoat, Gregory H. Lambrecht, Todd F. Davenport, William E. Cohn, Steven B. Woolfson, Daniel C. Taylor
  • Publication number: 20040102839
    Abstract: A method and apparatus for reducing mitral regurgitation. The apparatus is inserted into the coronary sinus of a patient in the vicinity of the posterior leaflet of the mitral valve, the apparatus being configured to straighten the natural curvature of at least a portion of the coronary sinus in the vicinity of the posterior leaflet of the mitral valve, whereby to move the posterior annulus anteriorly and thereby improve leaflet coaptation and reduce mitral regurgitation.
    Type: Application
    Filed: June 26, 2003
    Publication date: May 27, 2004
    Inventors: William E. Cohn, John R. Liddicoat, Steven B. Woolfson, Richard B. Streeter
  • Publication number: 20040073302
    Abstract: A method and apparatus for reducing mitral regurgitation. The apparatus is inserted into the coronary sinus of a patient in the vicinity of the posterior leaflet of the mitral valve, the apparatus being adapted to straighten the natural curvature of at least a portion of the coronary sinus in the vicinity of the posterior leaflet of the mitral valve, whereby to move the posterior annulus anteriorly and thereby improve leaflet coaptation and reduce mitral regurgitation.
    Type: Application
    Filed: May 27, 2003
    Publication date: April 15, 2004
    Inventors: Jonathan Rourke, John R. Liddicoat, Daniel C. Taylor, William E. Cohn
  • Publication number: 20040034380
    Abstract: Apparatus for resecting a diseased heart valve, the apparatus comprising: a body portion having a first end and a second end in opposition to one another, a lateral wall extending from the first end to the second end, the lateral wall defining an inner surface and an outer surface in opposition to one another, the inner surface and the outer surface defining arcuate surfaces, respectively, and the body portion defining a longitudinal axis from the first end to the second end; a first handle and a second handle attached to the body portion to extend from the first end thereof and the second end thereof, respectively; a cutting blade selectively rotatable about the longitudinal axis and disposed adjacent to the inner surface of the body portion; a set of retaining arms positionably mounted between the second handle and the second end of the body portion, the set of retaining arms being selectively positionable from a contracted state to an expanded state, the contracted state forming a first diameter having a f
    Type: Application
    Filed: April 16, 2003
    Publication date: February 19, 2004
    Inventors: Steven B. Woolfson, Richard B. Streeter, Daniel C. Taylor, William E. Cohn
  • Publication number: 20040019377
    Abstract: A method and device for reducing mitral regurgitation. An elongated body is positioned in a coronary sinus of a patient in a vicinity of a heart mitral valve posterior leaflet. The body is adapted to straighten a natural curvature of at least a portion of the coronary sinus in the vicinity of the posterior leaflet to move a posterior annulus anteriorly, which in turn moves the posterior leaflet anteriorly, thereby to improve leaflet coaptation.
    Type: Application
    Filed: January 14, 2003
    Publication date: January 29, 2004
    Inventors: Daniel C. Taylor, William E. Cohn, John R. Liddicoat, Steven B. Woolfson, Todd F. Davenport, Richard B. Streeter, Thomas F. Kordis, Jonathan Rourke
  • Patent number: 6669709
    Abstract: The present invention provides catheter apparatus and catheterization methodology for generating an arteriovenous fistula or a veno-venous fistula on-demand between closely associated blood vessels and at a chosen anatomic site in-vivo. The catheter apparatus is preferably employed in pairs, each catheter of the pair being suitable for percutaneous introduction into extension through a blood vessel. The catheterization methodology employs the catheter apparatus preferably in conjunction with conventional radiological techniques in order to place, verify, and confirm a proper alignment, orientation, and positioning for the catheters in-vivo prior to activating the perforation means for generating a fistula.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: December 30, 2003
    Assignee: TransVascular, Inc.
    Inventors: William E. Cohn, Ducksoo Kim
  • Patent number: 6656221
    Abstract: A method and apparatus for reducing mitral regurgitation. The apparatus is inserted into the coronary sinus of a patient in the vicinity of the posterior leaflet of the mitral valve, the apparatus being adapted to straighten the natural curvature of at least a portion of the coronary sinus in the vicinity of the posterior leaflet of the mitral valve, whereby to move the posterior annulus anteriorly and thereby improve leaflet coaptation and reduce mitral regurgitation.
    Type: Grant
    Filed: February 5, 2002
    Date of Patent: December 2, 2003
    Assignee: Viacor, Inc.
    Inventors: Daniel C. Taylor, John R. Liddicoat, Richard B. Streeter, Steven B. Woolfson, William E. Cohn, Todd F. Davenport, Thomas F. Kordis