Patents by Inventor Francis G. Duhaylongsod
Francis G. Duhaylongsod 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).
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Patent number: 6711436Abstract: Methods are provided for conducting diagnostic or therapeutic medical or surgical procedures in a patient wherein, during the procedure, autonomous ventricular electrical conductivity and escape beats are reversibly and transiently suppressed to facilitate the procedure. Also provided are compositions which are capable of inducing ventricular asystole in a patient. The compositions may include an atrioventricular (AV) node blocker. In one embodiment, compositions including an AV node blocker and a &bgr;-blocker are provided, wherein the &bgr;-blocker is present in an amount sufficient to substantially reduce the amount of AV node blocker required to induce ventricular asystole in the patient. The compositions and methods may be used for inducing temporary ventricular asystole in a beating heart, and to facilitate the performance of a variety of techniques, including minimally invasive microsurgical techniques.Type: GrantFiled: September 27, 1999Date of Patent: March 23, 2004Assignee: Duke UniversityInventor: Francis G. Duhaylongsod
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Publication number: 20030130671Abstract: A method for coupling a first vessel and a second vessel in an anastomosis. The method includes providing a first vessel with a fastener coupled thereto, inserting at least a portion of the device into the second vessel with an end portion of the fastener extending generally longitudinally through the second vessel, and radially expanding at least a portion of the fastener to sealingly secure the first vessel to an inner wall of the second vessel. An anastomosis fastener for use in coupling the first and second vessels together is also disclosed. The second vessel has an opening formed in a side wall thereof for insertion of the device. The device includes a tubular member at least a portion thereof being radially expandable.Type: ApplicationFiled: November 4, 2002Publication date: July 10, 2003Inventors: Francis G. Duhaylongsod, Fritz French
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Patent number: 6414018Abstract: Methods are provided for conducting surgical procedures in a patient wherein, during the surgical procedure, autonomous ventricular electrical conductivity and escape beats are reversibly and transiently suppressed to facilitate the surgical procedure. Also provided are compositions which are capable of inducing ventricular asystole in a patient. The compositions may include an AV node blocker. In one embodiment, compositions including an atrioventricular (AV) node blocker and a &bgr;-blocker are provided, wherein the &bgr;-blocker is present in an amount sufficient to substantially reduce the amount of AV node blocker required to induce ventricular asystole in the patient. The compositions and methods may be used for inducing temporary ventricular asystole in a beating heart, and to facilitate the performance of a variety of surgical techniques, including minimally invasive microsurgical techniques.Type: GrantFiled: January 28, 2000Date of Patent: July 2, 2002Assignee: Duke UniversityInventor: Francis G. Duhaylongsod
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Patent number: 6387047Abstract: In one embodiment, the present invention relates to a low profile support member for a surgical retraction apparatus which includes a support member in which a lower portion of the support member has a rectilinear portion for insertion into an anchoring receptacle; an upper portion of the support member has a first horizontal extension; a splined coupling adaptor connects together the lower and upper portions, in which the splined coupling adaptor includes a splined segment having a key-like splined portion and a lock-like splined portion; and an extender portion having both a vertical extension and a second horizontal extension. The extender portion is mountable on the first horizontal extension.Type: GrantFiled: April 28, 2000Date of Patent: May 14, 2002Assignee: Rultract, Inc.Inventors: Francis G. Duhaylongsod, Janice Lee Rullo, William John Koteles
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Publication number: 20020052597Abstract: A method of identifying vasculature comprising the steps of introducing an indicator in a peripheral vessel, and advancing a portion of the indicator into an internal vessel to identify said vessel. A catheter for identifying vasculature is also disclosed. The catheter is adapted to be introduced into a peripheral vessel and a portion thereof advanced into an internal vessel. The catheter comprises a light delivery portion at a distal end thereof and an expandable member located proximal to the light delivery portion.Type: ApplicationFiled: March 22, 2001Publication date: May 2, 2002Inventors: Francis G. Duhaylongsod, Hugh L. Narciso
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Publication number: 20020042625Abstract: A perfusion-occlusion catheter provides an occluded region in a vessel to facilitate, for example, an anastomosis in the region, while providing a path for perfusing fluid (blood) through the path for delivery in the vessel downstream from the occluded region. According to one aspect of the invention, at least a portion of the catheter that effects vessel occlusion comprises a shield that when exposed to suture needles or like piercing instruments deflects or resists perforation.Type: ApplicationFiled: December 22, 2000Publication date: April 11, 2002Inventors: Richard S. Stack, Francis G. Duhaylongsod, Harry R. Phillips, Troy Chapman, Michael Hogendijk, Hugh L. Narciso
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Publication number: 20020038120Abstract: A method of identifying vasculature comprising the steps of introducing an indicator in a peripheral vessel, and advancing a portion of the indicator into an internal vessel to identify said vessel. A catheter for identifying vasculature is also disclosed. The catheter is adapted to be introduced into a peripheral vessel and a portion thereof advanced into an internal vessel. The catheter comprises a light delivery portion at a distal end thereof and an expandable member located proximal to the light delivery portion.Type: ApplicationFiled: March 21, 2001Publication date: March 28, 2002Inventors: Francis G. Duhaylongsod, Hugh L. Narciso
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Patent number: 6241741Abstract: A method for coupling a first vessel and a second vessel in an anastomosis. The method includes providing a first vessel with a fastener coupled thereto, inserting at least a portion of the device into the second vessel with an end portion of the fastener extending generally longitudinally through the second vessel, and radially expanding at least a portion of the fastener to sealingly secure the first vessel to an inner wall of the second vessel. An anastomosis fastener for use in coupling the first and second vessels together is also disclosed. The second vessel has an opening formed in a side wall thereof for insertion of the device. The device includes a tubular member at least a portion thereof being radially expandable.Type: GrantFiled: March 9, 1998Date of Patent: June 5, 2001Assignee: Corvascular Surgical Systems, Inc.Inventors: Francis G. Duhaylongsod, Fritz French
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Patent number: 6165196Abstract: A perfusion-occlusion catheter provides an occluded region in a vessel to facilitate, for example, an anastomosis in the region, while providing a path for perfusing fluid (blood) through the path for delivery in the vessel downstream from the occluded region. According to one aspect of the invention, at least a portion of the catheter that effects vessel occlusion comprises a shield that when exposed to suture needles or like piercing instruments deflects or resists perforation.Type: GrantFiled: September 25, 1998Date of Patent: December 26, 2000Assignees: Corvascular Surgical Systems, Inc., Duke UniversityInventors: Richard S. Stack, Francis G. Duhaylongsod, Harry R. Phillips, III, Troy Chapman, Michael Hogendijk, Hugh L. Narciso, Jr.
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Patent number: 6141589Abstract: Methods are provided for conducting surgical procedures in a patient wherein, during the surgical procedure, autonomous ventricular electrical conductivity and escape beats are reversibly and transiently suppressed to facilitate the surgical procedure. Also provided are compositions which are capable of inducing ventricular asystole in a patient. The compositions may include an AV node blocker. In one embodiment, compositions including an atrioventricular (AV) node blocker and a .beta.-blocker are provided, wherein the .beta.-blocker is present in an amount sufficient to substantially reduce the amount of AV node blocker required to induce ventricular asystole in the patient. The compositions and methods may be used for inducing temporary ventricular asystole in a beating heart, and to facilitate the performance of a variety of surgical techniques, including minimally invasive microsurgical techniques.Type: GrantFiled: August 23, 1999Date of Patent: October 31, 2000Assignee: Duke UniversityInventor: Francis G. Duhaylongsod
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Patent number: 6127410Abstract: Methods are provided for conducting surgical procedures in a patient wherein, during the surgical procedure, autonomous ventricular electrical conductivity and escape beats are reversibly and transiently suppressed to facilitate the surgical procedure. Also provided are compositions which are capable of inducing ventricular asystole in a patient. The compositions may include an AV node blocker. In one embodiment, compositions including an atrioventricular (AV) node blocker and a .beta.-blocker are provided, wherein the .beta.-blocker is present in an amount sufficient to substantially reduce the amount of AV node blocker required to induce ventricular asystole in the patient. The compositions and methods may be used for inducing temporary ventricular asystole in a beating heart, and to facilitate the performance of a variety of surgical techniques, including minimally invasive microsurgical techniques.Type: GrantFiled: August 23, 1999Date of Patent: October 3, 2000Assignee: Duke UniversityInventor: Francis G. Duhaylongsod
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Patent number: 6113588Abstract: A method of identifying vasculature including the steps of introducing an indicator in a peripheral vessel, and advancing a portion of the indicator into an internal vessel to identify said vessel. A catheter for identifying vasculature is also disclosed. The catheter is adapted to be introduced into a peripheral vessel and a portion thereof advanced into an internal vessel. The catheter includes a light delivery portion at a distal end thereof and an expandable member located proximal to the light delivery portion.Type: GrantFiled: March 13, 1998Date of Patent: September 5, 2000Assignees: Corvascular, Inc., Duke UniversityInventors: Francis G. Duhaylongsod, Hugh L. Narciso, Jr.
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Patent number: 6101412Abstract: Methods are provided for conducting surgical procedures in a patient wherein, during the surgical procedure, autonomous ventricular electrical conductivity and escape beats are reversibly and transiently suppressed to facilitate the surgical procedure. Also provided are compositions which are capable of inducing ventricular asystole in a patient. The compossitions may include an AV node blocker. In one embodiment, compositions including an atrioventricular (AV) node blocker and a .beta.-blocker are provided, wherein the .beta.-blocker is present in an amount sufficient to substantially reduce the amount of AV node blocker required to induce ventricular asystole in the patient. The compositions and methods may be used for inducing temporary ventricular asystole in a beating heart, and to facilitate the performance of a variety of surgical techniques, including minimally invasive microsurgical techniques.Type: GrantFiled: December 21, 1999Date of Patent: August 8, 2000Assignee: Duke UniversityInventor: Francis G. Duhaylongsod
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Patent number: 6087394Abstract: Methods are provided for conducting surgical procedures in a patient wherein, during the surgical procedure, autonomous ventricular electrical conductivity and escape beats are reversibly and transiently suppressed to facilitate the surgical procedure. Also provided are compositions which are capable of inducing ventricular asystole in a patient. The compositions may include an AV node blocker. In one embodiment, compositions including an atrioventricular (AV) node blocker and a .beta.-blocker are provided, wherein the .beta.-blocker is present in an amount sufficient to substantially reduce the amount of AV node blocker required to induce ventricular asystole in the patient. The compositions and methods may be used for inducing temporary ventricular asystole in a beating heart, and to facilitate the performance of a variety of surgical techniques, including minimally invasive microsurgical techniques.Type: GrantFiled: August 23, 1999Date of Patent: July 11, 2000Assignee: Duke UniversityInventor: Francis G. Duhaylongsod
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Patent number: 6060454Abstract: Methods are provided for conducting surgical procedures in a patient wherein, during the surgical procedure, autonomous ventricular electrical conductivity and escape beats are reversibly and transiently suppressed to facilitate the surgical procedure. Also provided are compositions which are capable of inducing ventricular asystole in a patient. The compositions may include an AV node blocker. In one embodiment, compositions including an atrioventricular (AV) node blocker and a .beta.-blocker are provided, wherein the .beta.-blocker is present in an amount sufficient to substantially reduce the amount of AV node blocker required to induce ventricular asystole in the patient. The compositions and methods may be used for inducing temporary ventricular asystole in a beating heart, and to facilitate the performance of a variety of surgical techniques, including minimally invasive microsurgical techniques.Type: GrantFiled: August 7, 1998Date of Patent: May 9, 2000Assignee: Duke UniversityInventor: Francis G. Duhaylongsod
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Patent number: 6043273Abstract: Methods are provided for conducting surgical procedures in a patient wherein, during the surgical procedure, autonomous ventricular electrical conductivity and escape beats are reversibly and transiently suppressed to facilitate the surgical procedure. Also provided are compositions which are capable of inducing ventricular asystole in a patient. The compositions may include an AV node blocker. In one embodiment, compositions including an atrioventricular (AV) node blocker and a .beta.-blocker are provided, wherein the .beta.-blocker is present in an amount sufficient to substantially reduce the amount of AV node blocker required to induce ventricular asystole in the patient. The compositions and methods may be used for inducing temporary ventricular asystole in a beating heart, and to facilitate the performance of a variety of surgical techniques, including minimally invasive microsurgical techniques.Type: GrantFiled: August 23, 1999Date of Patent: March 28, 2000Assignee: Duke UniversityInventor: Francis G. Duhaylongsod