Patents by Inventor John H. Stevens

John H. Stevens 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: 20030040736
    Abstract: A venting catheter, system and method are provided for withdrawing blood and other fluids from a patient's heart to facilitate decompressing the heart during cardioplegic arrest and cardiopulmonary bypass, without the need for a thoracotomy and without puncturing the aorta, pulmonary artery, or heart itself . The venting catheter is configured to be introduced into a peripheral vein and intraluminally advanced through the right side of the heart and into the pulmonary artery. The venting catheter includes a lumen configured to withdraw blood at a rate of at least about 50 ml/min at a pressure of no less than about −350 mmHg. A flow-directing means is provided to facilitate guiding the catheter into the pulmonary artery by being carried by blood flow through the heart. The cardiac venting system may include, in addition to the cardiac venting catheter, a cardiopulmonary bypass system to maintain circulation of oxygenated blood, and means for arresting the patient's heart.
    Type: Application
    Filed: June 25, 1999
    Publication date: February 27, 2003
    Inventors: JOHN H. STEVENS, JEFFREY W. KRIER, KIRSTEN L. VALLEY, PHILIP C. EVARD
  • Patent number: 6494897
    Abstract: A method for closed-chest cardiac surgical intervention relies on viewing the cardiac region through a thoracoscope or other viewing scope and endovascularly partitioning the patient's arterial system at a location within the ascending aorta. The cardiopulmonary bypass and cardioplegia can be induced, and a variety of surgical procedures performed on the stopped heart using percutaneously introduced tools. The method of the present invention will be particularly suitable for forming coronary artery bypass grafts, where an arterial blood source is created using least invasive surgical techniques, and the arterial source is connected to a target location within a coronary artery while the patient is under cardiopulmonary bypass and cardioplegia.
    Type: Grant
    Filed: September 4, 2001
    Date of Patent: December 17, 2002
    Assignee: Heartport, Inc.
    Inventors: Wesley D. Sterman, Lawrence C. Siegel, Patricia E. Curtis, John H. Stevens, Timothy R. MacHold
  • Publication number: 20020183839
    Abstract: Devices and methods are provided for less-invasive surgical treatment of cardiac valves whereby the need for a gross thoracotomy or median sternotomy is eliminated. In one aspect of the invention, a delivery system for a cardiac valve prosthesis such as an annuloplasty ring or prosthetic valve includes an elongated handle configured to extend into the heart through an intercostal space from outside of the chest cavity, and a prosthesis holder attached to the handle for releasably holding a prosthesis. The prosthesis holder is attached to the handle in such a way that the holder, prosthesis and handle have a profile with a height smaller than the width of an intercostal space when the adjacent ribs are unretracted, preferably less than about 30 mm.
    Type: Application
    Filed: July 18, 2002
    Publication date: December 5, 2002
    Inventors: Michi E. Garrison, Brian S. Donlon, S. Christopher Daniel, John H. Stevens
  • Publication number: 20020178017
    Abstract: An excellence indicator system. The invention provides for information about education resources. The invention is generically referred to with the acronym FEISTIER. The invention allows for the information integration from among numerous school districts, campuses, and other public educational divisions into a single report. The single report is, in some embodiments, a multi-dimensional report allowing a user to acquire a host of information for direction and guidance in performing management of the financial resources within the public educational division. For example, a school district manager may use the functionality of FEISTIER to perform comparative analysis of his/her school district in view of other school districts. Moreover, the comparison may be further culled to include only actually comparable school districts, bases on parameter including income, size and social factors.
    Type: Application
    Filed: May 25, 2001
    Publication date: November 28, 2002
    Inventors: John H. Stevens, Thomas Dawson Canby
  • Patent number: 6482171
    Abstract: A multi-lumen catheter having a reinforcing member wrapped around at least one of the lumens in a helical manner. An inflation lumen is positioned outside the reinforcing member for inflating a balloon carried by the catheter. A two-lumen extrusion is bonded to the reinforced lumen to form the multi-lumen catheter. The multi-lumen catheter is particularly useful as an aortic occlusion catheter.
    Type: Grant
    Filed: January 13, 1997
    Date of Patent: November 19, 2002
    Assignee: Heartport, Inc.
    Inventors: Timothy J. Corvi, John H. Stevens
  • Patent number: 6451054
    Abstract: Devices and methods are provided for less-invasive surgical treatment of cardiac valves whereby the need for a gross thoracotomy or median sternotomy is eliminated. In one aspect of the invention, a delivery system for a cardiac valve prosthesis such as an annuloplasty ring or prosthetic valve includes an elongated handle configured to extend into the heart through an intercostal space from outside of the chest cavity, and a prosthesis holder attached to the handle for releasably holding a prosthesis. The prosthesis holder is attached to the handle in such a way that the holder, prosthesis and handle have a profile with a height smaller than the width of an intercostal space when the adjacent ribs are unretracted, preferably less than about 30 mm.
    Type: Grant
    Filed: October 25, 1999
    Date of Patent: September 17, 2002
    Assignee: Hearport, Inc.
    Inventor: John H. Stevens
  • Publication number: 20020100485
    Abstract: Devices, systems, and methods are provided for accessing the interior of the heart and performing procedures therein while the heart is beating. In one embodiment, a tubular access device having an inner lumen is provided for positioning through a penetration in a muscular wall of the heart, the access device having a means for sealing within the penetration to inhibit leakage of blood through the penetration. The sealing means may comprise a balloon or flange on the access device, or a suture placed in the heart wall to gather the heart tissue against the access device. An obturator is removably positionable in the inner lumen of the access device, the obturator having a cutting means at its distal end for penetrating the muscular wall of the heart. The access device is preferably positioned through an intercostal space and through the muscular wall of the heart.
    Type: Application
    Filed: March 15, 2002
    Publication date: August 1, 2002
    Inventors: John H. Stevens, Bruce A. Reitz, Alex T. Roth, William S. Peters, Hanson S. Gifford
  • Publication number: 20020100482
    Abstract: A method for closed-chest cardiac surgical intervention relies on viewing the cardiac region through a thoracoscope or other viewing scope and endovascularly partitioning the patient's arterial system at a location within the ascending aorta. The cardiopulmonary bypass and cardioplegia can be induced, and a variety of surgical procedures performed on the stopped heart using percutaneously introduced tools.
    Type: Application
    Filed: September 27, 2001
    Publication date: August 1, 2002
    Inventors: Wesley D. Sterman, Lawrence C. Siegel, Patricia E. Curtis, John H. Stevens, William S. Peters, Timothy R. Machold
  • Publication number: 20020096183
    Abstract: Devices, systems, and methods are provided for accessing the interior of the heart and performing procedures therein while the heart is beating. In one embodiment, a tubular access device having an inner lumen is provided for positioning through a penetration in a muscular wall of the heart, the access device having a means for sealing within the penetration to inhibit leakage of blood through the penetration. The sealing means may comprise a balloon or flange on the access device, or a suture placed in the heart wall to gather the heart tissue against the access device. An obturator is removably positionable in the inner lumen of the access device, the obturator having a cutting means at its distal end for penetrating the muscular wall of the heart. The access device is preferably positioned through an intercostal space and through the muscular wall of the heart.
    Type: Application
    Filed: March 15, 2002
    Publication date: July 25, 2002
    Inventors: John H. Stevens, Bruce A. Reitz, Alex T. Roth, William S. Peters, Hanson S. Gifford
  • Publication number: 20020087183
    Abstract: Surgical methods and instruments are disclosed for performing port-access or closed-chest coronary artery bypass (CABG) surgery in multivessel coronary artery disease. In contrast to standard open-chest CABG surgery, which requires a median sternotomy or other gross thoracotomy to expose the patient's heart, port-access CABG surgery is performed through small incisions or access ports made through the intercostal spaces between the patient's ribs, resulting in greatly reduced pain and morbidity to the patient. In situ arterial bypass grafts, such as the internal mammary arteries and/or the right gastroepiploic artery, are prepared for grafting by thoracoscopic or laparoscopic takedown techniques. Free grafts, such as a saphenous vein graft or a free arterial graft, can be used to augment the in situ arterial grafts. The graft vessels are anastomosed to the coronary arteries under direct visualization through a cardioscopic microscope inserted through an intercostal access port.
    Type: Application
    Filed: October 19, 2001
    Publication date: July 4, 2002
    Inventors: Stephen W. Boyd, Alan R. Rapacki, Matthias Vaska, Brian S. Donlon, William S. Peters, John H. Stevens
  • Publication number: 20020074004
    Abstract: Surgical methods and instruments are disclosed for performing port-access or closed-chest coronary artery bypass (CABG) surgery in multivessel coronary artery disease. In contrast to standard open-chest CABG surgery, which requires a median sternotomy or other gross thoracotomy to expose the patient's heart, port-access CABG surgery is performed through small incisions or access ports made through the intercostal spaces between the patient's ribs, resulting in greatly reduced pain and morbidity to the patient. In situ arterial bypass grafts, such as the internal mammary arteries and/or the right gastroepiploic artery, are prepared for grafting by thoracoscopic or laparoscopic takedown techniques. Free grafts, such as a saphenous vein graft or a free arterial graft, can be used to augment the in situ arterial grafts. The graft vessels are anastomosed to the coronary arteries under direct visualization through a cardioscopic microscope inserted through an intercostal access port.
    Type: Application
    Filed: October 19, 2001
    Publication date: June 20, 2002
    Inventors: Stephen W. Boyd, Alan R. Rapacki, Matthias Vaska, Brian S. Donlon, William S. Peters, John H. Stevens
  • Patent number: 6401720
    Abstract: Devices, systems, and methods are provided for accessing the interior of the heart and performing procedures therein while the heart is beating. In one embodiment, a tubular access device having an inner lumen is provided for positioning through a penetration in a muscular wall of the heart, the access device having a means for sealing within the penetration to inhibit leakage of blood through the penetration. The sealing means may comprise a balloon or flange on the access device, or a suture placed in the heart wall to gather the heart tissue against the access device. An obturator is removably positionable in the inner lumen of the access device, the obturator having a cutting means at its distal end for penetrating the muscular wall of the heart. The access device is preferably positioned through an intercostal space and through the muscular wall of the heart.
    Type: Grant
    Filed: October 4, 1999
    Date of Patent: June 11, 2002
    Inventors: John H. Stevens, Bruce A. Reitz, Alex T. Roth, William S. Peters, Hanson S. Gifford
  • Publication number: 20020056460
    Abstract: Surgical methods and instruments are disclosed for performing port-access or closed-chest coronary artery bypass (CABG) surgery in multivessel coronary artery disease. In contrast to standard open-chest CABG surgery, which requires a median sternotomy or other gross thoracotomy to expose the patient's heart, port-access CABG surgery is performed through small incisions or access ports made through the intercostal spaces between the patient's ribs, resulting in greatly reduced pain and morbidity to the patient. In situ arterial bypass grafts, such as the internal mammary arteries and/or the right gastroepiploic artery, are prepared for grafting by thoracoscopic or laparoscopic takedown techniques. Free grafts, such as a saphenous vein graft or a free arterial graft, can be used to augment the in situ arterial grafts. The graft vessels are anastomosed to the coronary arteries under direct visualization through a cardioscopic microscope inserted through an intercostal access port.
    Type: Application
    Filed: October 19, 2001
    Publication date: May 16, 2002
    Inventors: Stephen W. Boyd, Alan R. Rapacki, Matthias Vaska, Brian S. Donlon, William S. Peters, John H. Stevens
  • Publication number: 20020058995
    Abstract: The subject invention relates to a valve replacement system together with methods of preparation and use, are provided for endovascular replacement of a heart valve in a host. The valve replacement system includes up to five components: (1) a prosthetic valve device, (2) a valve introducer device, (3) an intraluminal procedure device, (4) a procedure device capsule, and (5) a tissue cutter. The system provides for endovascular removal of a malfunctioning valve and subsequent replacement with a permanent prosthetic heart valve.
    Type: Application
    Filed: October 23, 2001
    Publication date: May 16, 2002
    Inventor: John H. Stevens
  • Publication number: 20020029783
    Abstract: A method of treatment of congestive heart failure comprises the steps of introducing an aortic occlusion catheter through a patient's peripheral artery, the aortic occlusion catheter having an occluding member movable from a collapsed position to an expanded position; positioning the occluding member in the patient's ascending aorta; moving the occluding member from the collapsed shape to the expanded shape after the positioning step; introducing cardioplegic fluid into the patient's coronary blood vessels to arrest the patient's heart; maintaining circulation of oxygenated blood through the patient's arterial system; and reshaping an outer wall of the patient's heart while the heart is arrested so as to reduce the transverse dimension of the left ventricle.
    Type: Application
    Filed: September 12, 2001
    Publication date: March 14, 2002
    Inventors: John H. Stevens, Lee R. Bolduc, Stephen W. Boyd, Brian S. Donlon, Hanson S. Gifford, Philip R. Houle, Daniel C. Rosenman
  • Publication number: 20020023653
    Abstract: A method for closed-chest cardiac surgical intervention relies on viewing the cardiac region through a thoracoscope or other viewing scope and endovascularly partitioning the patient's arterial system at a location within the ascending aorta. The cardiopulmonary bypass and cardioplegia can be induced, and a variety of surgical procedures performed on the stopped heart using percutaneously introduced tools. The method of the present invention will be particularly suitable for forming coronary artery bypass grafts, where an arterial blood source is created using least invasive surgical techniques, and the arterial source is connected to a target location within a coronary artery while the patient is under cardiopulmonary bypass and cardioplegia.
    Type: Application
    Filed: September 4, 2001
    Publication date: February 28, 2002
    Inventors: Wesley D. Sterman, Lawrence C. Siegel, Patricia E. Curtis, John H. Stevens, Timothy R. MacHold
  • Publication number: 20020013569
    Abstract: A method for closed-chest cardiac surgical intervention relies on viewing the cardiac region through a thoracoscope or other viewing scope and endovascularly partitioning the patient's arterial system at a location within the ascending aorta. The cardiopulmonary bypass and cardioplegia can be induced, and a variety of surgical procedures performed on the stopped heart using percutaneously introduced tools.
    Type: Application
    Filed: September 19, 2001
    Publication date: January 31, 2002
    Inventors: Wesley D. Sterman, Lawrence C. Siegel, Patricia E. Curtis, John H. Stevens, William S. Peters, Timothy R. Machold
  • Patent number: 6338735
    Abstract: The subject invention relates to a valve replacement system together with methods of preparation and use, are provided for endovascular replacement of a heart valve in a host. The valve replacement system includes up to five components: (1) a prosthetic valve device, (2) a valve introducer device, (3) an intraluminal procedure device, (4) a procedure device capsule, and (5) a tissue cutter. The system provides for endovascular removal of a malfunctioning valve and subsequent replacement with a permanent prosthetic heart valve.
    Type: Grant
    Filed: March 15, 1996
    Date of Patent: January 15, 2002
    Inventor: John H. Stevens
  • Patent number: 6325067
    Abstract: A method for closed-chest cardiac surgical intervention relies on viewing the cardiac region through a thoracoscope or other viewing scope and endovascularly partitioning the patient's arterial system at a location within the ascending aorta. The cardiopulmonary bypass and cardioplegia can be induced, and a variety of surgical procedures performed on the stopped heart using percutaneously introduced tools.
    Type: Grant
    Filed: January 12, 2000
    Date of Patent: December 4, 2001
    Inventors: Wesley D. Sterman, Lawrence C. Siegel, Patricia E. Curtis, John H. Stevens, William S. Peters, Timothy R. Machold
  • Publication number: 20010044591
    Abstract: A system for accessing a patient's cardiac anatomy which includes an endovascular aortic partitioning device that separates the coronary arteries and the heart from the rest of the patient's arterial system. The endovascular device for partitioning a patient's ascending aorta comprises a flexible shaft having a distal end, a proximal end, and a first inner lumen therebetween with an opening at the distal end. The shaft may have a preshaped distal portion with a curvature generally corresponding to the curvature of the patient's aortic arch. An expandable means, e.g. a balloon, is disposed near the distal end of the shaft proximal to the opening in the first inner lumen for occluding the ascending aorta so as to block substantially all blood flow therethrough for a plurality of cardiac cycles, while the patient is supported by cardiopulmonary bypass. The endovascular aortic partitioning device may be coupled to an arterial bypass cannula for delivering oxygenated blood to the patient's arterial system.
    Type: Application
    Filed: February 2, 2001
    Publication date: November 22, 2001
    Applicant: HEARTPORT, INC.
    Inventors: John H. Stevens, Wesley D. Sterman, Hanson S. Gifford, Timothy R. Machold