Patents by Inventor Stephen W. Boyd
Stephen W. Boyd 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: 20020092533Abstract: 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: ApplicationFiled: October 19, 2001Publication date: July 18, 2002Inventors: Stephen W. Boyd, Alan R. Rapacki, Matthias Vaska, Brian S. Donlon, William S. Peters
-
Publication number: 20020087183Abstract: 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: ApplicationFiled: October 19, 2001Publication date: July 4, 2002Inventors: Stephen W. Boyd, Alan R. Rapacki, Matthias Vaska, Brian S. Donlon, William S. Peters, John H. Stevens
-
Publication number: 20020074004Abstract: 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: ApplicationFiled: October 19, 2001Publication date: June 20, 2002Inventors: Stephen W. Boyd, Alan R. Rapacki, Matthias Vaska, Brian S. Donlon, William S. Peters, John H. Stevens
-
Publication number: 20020069884Abstract: 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: ApplicationFiled: October 19, 2001Publication date: June 13, 2002Inventors: Stephen W. Boyd, Alan R. Rapacki, Matthias Vaska, Brian S. Donlon, William S. Peters
-
Publication number: 20020068970Abstract: The invention provides surgical systems and methods for ablating heart tissue within the interior and/or exterior of the heart. A plurality of probes is provided with each probe configured for introduction into the chest for engaging the heart. Each probe includes an elongated shaft having an elongated ablating surface of a predetermined shape. The elongated shaft and the elongated ablating surface of each probe are configured to ablate a portion of the heart. A sealing device affixed to the heart tissue forms a hemostatic seal between the probe and the penetration in the heart to inhibit blood loss therethrough.Type: ApplicationFiled: December 21, 2001Publication date: June 6, 2002Applicant: Epicardia, Inc.Inventors: James L. Cox, Stephen W. Boyd, Hanson S. Gifford, Matthias Vaska, Daniel D. Merrick
-
Publication number: 20020056460Abstract: 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: ApplicationFiled: October 19, 2001Publication date: May 16, 2002Inventors: Stephen W. Boyd, Alan R. Rapacki, Matthias Vaska, Brian S. Donlon, William S. Peters, John H. Stevens
-
Publication number: 20020029783Abstract: 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: ApplicationFiled: September 12, 2001Publication date: March 14, 2002Inventors: John H. Stevens, Lee R. Bolduc, Stephen W. Boyd, Brian S. Donlon, Hanson S. Gifford, Philip R. Houle, Daniel C. Rosenman
-
Publication number: 20020017306Abstract: The invention provides surgical systems and methods for ablating heart tissue within the interior and/or exterior of the heart. A plurality of probes is provided with each probe configured for introduction into the chest for engaging the heart. Each probe includes an elongated shaft having an elongated ablating surface of a predetermined shape. The elongated shaft and the elongated ablating surface of each probe are configured to ablate a portion of the heart. A sealing device affixed to the heart tissue forms a hemostatic seal between the probe and the penetration in the heart to inhibit blood loss therethrough.Type: ApplicationFiled: September 12, 2001Publication date: February 14, 2002Applicant: EPICOR, INC.Inventors: James L. Cox, Stephen W. Boyd, Hanson S. Gifford, Matthias Vaska, Daniel D. Merrick
-
Publication number: 20010023334Abstract: A catheter system is provided for accessing the coronary ostia transluminally from a peripheral arterial access site, such as the femoral artery, and for inducing cardioplegic arrest by direct infusion of cardioplegic solution into the coronary arteries. In a first embodiment, the catheter system is in the form of a single perfusion catheter with multiple distal branches for engaging the coronary ostia. In a second embodiment, multiple perfusion catheters are delivered to the coronary ostia through a single arterial cannula. In a third embodiment, multiple perfusion catheters are delivered to the coronary ostia through a single guiding catheter. In a fourth embodiment, multiple catheters are delivered to the coronary ostia through a single guiding catheter which has distal exit ports that are arranged to direct the perfusion catheters into the coronary ostia.Type: ApplicationFiled: May 22, 2001Publication date: September 20, 2001Applicant: HEARTPORT, INC.Inventors: Frederick G. St. Goar, William S. Peters, Philip C. Evard, Stephen W. Boyd, Craig L. Adams, Richard L. Mueller, John H. Stevens
-
Publication number: 20010016725Abstract: Devices and methods are provided for temporarily inducing cardioplegic arrest in the heart of a patient and for establishing cardiopulmonary bypass in order to facilitate surgical procedures on the heart and its related blood vessels. Specifically, a catheter based system is provided for isolating the heart and coronary blood vessels of a patient from the remainder of the arterial system and for infusing a cardioplegic agent into the patient's coronary arteries to induce cardioplegic arrest in the heart. The system includes an endoaortic partitioning catheter having an expandable balloon at its distal end which is expanded within the ascending aorta to occlude the aortic lumen between the coronary ostia and the brachiocephalic artery. Means for centering the catheter tip within the ascending aorta include specially curved shaft configurations, eccentric or shaped occlusion balloons and a steerable catheter tip, which may be used separately or in combination.Type: ApplicationFiled: September 25, 1998Publication date: August 23, 2001Inventors: KIRSTEN L. VALLEY, DAVID W. SNOW, TIMOTHY C. CORVI, BRIAN S. DONLON, STEPHEN W. BOYD, SYLVIA W. FAN, ALEX T. ROTH, WILLIAM S. PETERS, RICHARD J. MUELLER JR., HANSON S. GIFFORD III
-
Patent number: 6161543Abstract: The invention provides surgical systems and methods for ablating heart tissue within the interior and/or exterior of the heart. A plurality of probes is provided with each probe configured for introduction into the chest for engaging the heart. Each probe includes an elongated shaft having an elongated ablating surface of a predetermined shape. The elongated shaft and the elongated ablating surface of each probe are configured to ablate a portion of the heart. A sealing device affixed to the heart tissue forms a hemostatic seal between the probe and the penetration in the heart to inhibit blood loss therethrough.Type: GrantFiled: October 15, 1997Date of Patent: December 19, 2000Assignee: Epicor, Inc.Inventors: James L. Cox, Stephen W. Boyd, Hanson S. Gifford, III, Matthias Vaska, Daniel D. Merrick
-
Patent number: 6142935Abstract: The present invention provides a retractor for providing surgical access through a passage in tissue, together with methods for its use and deployment. The retractor comprises an anchoring frame having an upper surface, a lower surface, and an opening therethrough which defines an axial axis. A flexible tensioning member is attached to the frame, and is extendable from the frame out of the body through the passage when the frame is positioned through the passage and into a body cavity. This tensioning member is selectively tensionable to spread the tissue radially outwardly from the axial axis. Hence, it is the tension imposed on the flexible liner which effects retraction of the tissue, rather than relying on the structural integrity of an artificial lumen.Type: GrantFiled: March 24, 1998Date of Patent: November 7, 2000Assignee: Heartport, Inc.Inventors: James R. Flom, Stephen W. Boyd
-
Patent number: 6125852Abstract: 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: GrantFiled: July 23, 1996Date of Patent: October 3, 2000Assignee: Heartport, Inc.Inventors: John H. Stevens, Lee R. Bolduc, Stephen W. Boyd, Brian S. Donlon, Hanson S. Gifford, III, Philip R. Houle, Daniel C. Rosenman
-
Patent number: 6048309Abstract: The present invention provides a retractor for providing surgical access through a passage in a patient's body, together with a delivery device for positioning the retractor in the patient's body. The retractor comprises an anchoring frame having an upper surface, a lower surface, and an opening therethrough which defines an axial axis. A flexible tensioning member is attached to the frame, and is extendable from the frame out of the body through the passage when the frame is positioned through the passage and into a body cavity. The retractor is held by the delivery device in a collapsed orientation for placement in the patient's body. The delivery device is released from the retractor to allow the retractor to assume an expanded orientation in the patient's body. This tensioning member is selectively tensionable to spread the tissue radially outwardly from the axial axis.Type: GrantFiled: September 19, 1997Date of Patent: April 11, 2000Assignee: Heartport, Inc.Inventors: James R. Flom, Meir Moshe, Stephen W. Boyd, Richard L. Mueller
-
Patent number: 5913842Abstract: retrograde delivery catheter includes at its distal end a balloon configured to occlude the coronary sinus of a patient's heart, and has a length and flexibility which allow the distal end to be positioned in the coronary sinus with the proximal end extending transluminally to a peripheral vein such as an internal jugular vein and out of the body through a puncture therein. The delivery catheter has a delivery lumen extending between its proximal and distal ends which is configured to allow a cardioplegic fluid to be delivered at a flow rate of at least 200 ml/min with a pump pressure less than 300 mm Hg, thereby allowing cardioplegic arrest to be maintained using a blood cardioplegic fluid without causing excessive hemolysis.Type: GrantFiled: February 11, 1998Date of Patent: June 22, 1999Assignee: Heartport, Inc.Inventors: Stephen W. Boyd, John H. Stevens, Philip C. Evard, Craig L. Adams
-
Patent number: 5814016Abstract: Devices and methods are provided for temporarily inducing cardioplegic arrest in the heart of a patient and for establishing cardiopulmonary bypass in order to facilitate surgical procedures on the heart and its related blood vessels. Specifically, a catheter based system is provided for isolating the heart and coronary blood vessels of a patient from the remainder of the arterial system and for infusing a cardioplegic agent into the patient's coronary arteries to induce cardioplegic arrest in the heart. The system includes an endoaortic partitioning catheter having an expandable balloon at its distal end which is expanded within the ascending aorta to occlude the aortic lumen between the coronary ostia and the brachiocephalic artery. Means for centering the catheter tip within the ascending aorta include specially curved shaft configurations, eccentric or shaped occlusion balloons and a steerable catheter tip, which may be used separately or in combination.Type: GrantFiled: February 7, 1997Date of Patent: September 29, 1998Assignee: Heartport, Inc.Inventors: Kirsten L. Valley, David W. Snow, Timothy C. Corvi, Brian S. Donlon, Stephen W. Boyd, Sylvia W. Fan, Alex T. Roth, William S. Peters, Richard J. Mueller, Jr., Hanson S. Gifford, III
-
Patent number: 5810721Abstract: The present invention provides a retractor for providing surgical access through a passage in tissue, together with methods for its use and deployment. The retractor comprises an anchoring frame having an upper surface, a lower surface, and an opening therethrough which defines an axial axis. A flexible tensioning member is attached to the frame, and is extendable from the frame out of the body through the passage when the frame is positioned through the passage and into a body cavity. This tensioning member is selectively tensionable to spread the tissue radially outwardly from the axial axis. Hence, it is the tension imposed on the flexible liner which effects retraction of the tissue, rather than relying on the structural integrity of an artificial lumen.Type: GrantFiled: March 4, 1996Date of Patent: September 22, 1998Assignee: Heartport, Inc.Inventors: Richard L. Mueller, Stephen W. Boyd, James R. Flom, Lorraine F. Mangosong, William S. Peters
-
Patent number: 5807318Abstract: A catheter system is provided for accessing the coronary ostia transluminally from a peripheral arterial access site, such as the femoral artery, and for inducing cardioplegic arrest by direct infusion of cardioplegic solution into the coronary arteries. In a first embodiment, the catheter system is in the form of a single perfusion catheter with multiple distal branches for engaging the coronary ostia. In a second embodiment, multiple perfusion catheters are delivered to the coronary ostia through a single arterial cannula. In a third embodiment, multiple perfusion catheters are delivered to the coronary ostia through a single guiding catheter. In a fourth embodiment, multiple catheters are delivered to the coronary ostia through a single guiding catheter which has distal exit ports that are arranged to direct the perfusion catheters into the coronary ostia.Type: GrantFiled: March 12, 1996Date of Patent: September 15, 1998Assignee: Heartport, Inc.Inventors: Frederick G. St. Goar, William S. Peters, Philip C. Evard, Stephen W. Boyd, Craig L. Adams, Richard L. Mueller, Jr., John H. Stevens
-
Patent number: 5799661Abstract: 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: GrantFiled: June 7, 1995Date of Patent: September 1, 1998Assignee: Heartport, Inc.Inventors: Stephen W. Boyd, Alan R. Rapacki, William S. Peters
-
Patent number: 5738652Abstract: A retrograde delivery catheter includes at its distal end a balloon configured to occlude the coronary sinus of a patient's heart, and has a length and flexibility which allow the distal end to be positioned in the coronary sinus with the proximal end extending transluminally to a peripheral vein such as an internal jugular vein and out of the body through a puncture therein. The delivery catheter has a delivery lumen extending between its proximal and distal ends which is configured to allow a cardioplegic fluid to be delivered at a flow rate of at least 200 ml/min with a pump pressure less than 300 mm Hg, thereby allowing cardioplegic arrest to be maintained using a blood cardioplegic fluid without causing excessive hemolysis.Type: GrantFiled: January 17, 1997Date of Patent: April 14, 1998Assignee: Heartport, Inc.Inventors: Stephen W. Boyd, John H. Stevens, Philip C. Evard, Craig L. Adams