Patents by Inventor Todd F. Davenport
Todd F. Davenport 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: 10485976Abstract: Apparatus is disclosed for providing access to a functioning vascular system of a patient, the apparatus comprising: a main body having sidewalls defining an interior region and an exterior region, a bottom end and a top end; a base being formed at the bottom end of the main body, securing means being configured on the base so as to allow attachment and formation of a seal between the base and the functioning vascular system of the patient, and the base being configurable to provide a passageway from the interior region of the main body to the functioning vascular system of the patient; and a cover being formed at the top end of the main body, wherein the cover provides a barrier between the interior region and the exterior region at the top end of the main body.Type: GrantFiled: April 26, 2005Date of Patent: November 26, 2019Assignee: Medtronic, Inc.Inventors: Richard B. Streeter, John R. Liddicoat, Todd F. Davenport
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Patent number: 8951280Abstract: Devices and methods for performing intravascular procedures without cardiac bypass include embodiments of temporary filter devices, temporary valves, and prosthetic valves. The temporary filter devices have a cannula which provides access for surgical tools for effecting repair of cardiac valves. The cannula may have filters which prevent embolitic material from entering the coronary arteries and aorta. The valve devices may also have a cannula for insertion of the valve into the aorta. The valve devices expand in the aorta to occupy the entire flow path of the vessel and operate to prevent blood flow and to permit flow through the valve. The prosthetic valves include valve fixation devices which secure the prosthetic valve to the wall of the vessel. The prosthetic valves are introduced into the vascular system in a compressed state, advanced to the site of implantation, and expanded and secured to the vessel wall.Type: GrantFiled: June 9, 2010Date of Patent: February 10, 2015Assignee: Medtronic, Inc.Inventors: William E. Cohn, Gregory H. Lambrecht, John R. Liddicoat, Robert Kevin Moore, Richard B. Streeter, Todd F. Davenport
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Publication number: 20140288589Abstract: Apparatus for filtering and entrapping debris in the vascular system of a patient, the apparatus including a filter to allow blood to flow therethrough and to restrict passage of debris, wherein the filter captures debris carried in a first direction of blood flow. The apparatus further includes an entrapment mechanism which allows passage of debris and blood therethrough, in the first direction of blood flow and prevents debris passage in a second direction. The entrapment mechanism and filter allow blood and debris therethrough in the first direction of blood flow. The entrapment mechanism prevents debris flow in the second direction of blood flow. A method for filtering and entrapping debris generated during a percutaneous heart procedure includes deploying a filter mechanism orthogonal to the axis of an artery and performing a percutaneous heart procedure. in the vascular accumulated debris from the vascular system.Type: ApplicationFiled: June 4, 2014Publication date: September 25, 2014Inventors: Robert B. Streeter, Gregory B. Lambrecht, John R. Liddicoat, Robert Kevin Moore, Todd F. Davenport
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Patent number: 8777980Abstract: Apparatus for filtering and entrapping debris in the vascular system of a patient, the apparatus including a filter to allow blood to flow therethrough and to restrict passage of debris, wherein the filter captures debris carried in a first direction of blood flow. The apparatus further includes an entrapment mechanism which allows passage of debris and blood therethrough, in the first direction of blood flow and prevents debris passage in a second direction. The entrapment mechanism and filter allow blood and debris therethrough in the first direction of blood flow. The entrapment mechanism prevents debris flow in the second direction of blood flow. A method for filtering and entrapping debris in the vascular system includes inserting the apparatus into the vascular system, allowing blood and debris carried therein to flow through the entrapment mechanism, and removing the apparatus and accumulated debris from the vascular system.Type: GrantFiled: December 23, 2011Date of Patent: July 15, 2014Assignee: Medtronic, Inc.Inventors: Richard B. Streeter, Gregory H. Lambrecht, John R. Liddicoat, Robert Kevin Moore, Todd F. Davenport
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Publication number: 20120245618Abstract: Apparatus for filtering and entrapping debris in the vascular system of a patient, the apparatus including a filter to allow blood to flow therethrough and to restrict passage of debris, wherein the filter captures debris carried in a first direction of blood flow. The apparatus further includes an entrapment mechanism which allows passage of debris and blood therethrough, in the first direction of blood flow and prevents debris passage in a second direction. The entrapment mechanism and filter allow blood and debris therethrough in the first direction of blood flow. The entrapment mechanism prevents debris flow in the second direction of blood flow. A method for filtering and entrapping debris in the vascular system includes inserting the apparatus into the vascular system, allowing blood and debris carried therein to flow through the entrapment mechanism, and removing the apparatus and accumulated debris from the vascular system.Type: ApplicationFiled: December 23, 2011Publication date: September 27, 2012Inventors: Richard B. Streeter, Gregory H. Lambrecht, John R. Liddicoat, Robert Kevin Moore, Todd F. Davenport
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Patent number: 8092487Abstract: Apparatus for filtering and entrapping debris in the vascular system of a patient, the apparatus including a filter to allow blood to flow therethrough and to restrict passage of debris, wherein the filter captures debris carried in a first direction of blood flow. The apparatus further includes an entrapment mechanism which allows passage of debris and blood therethrough, in the first direction of blood flow and prevents debris passage in a second direction. The entrapment mechanism and filter allow blood and debris therethrough in the first direction of blood flow. The entrapment mechanism prevents debris flow in the second direction of blood flow. A method for filtering and entrapping debris in the vascular system includes inserting the apparatus into the vascular system, allowing blood and debris carried therein to flow through the entrapment mechanism, and removing the apparatus and accumulated debris from the vascular system.Type: GrantFiled: June 14, 2010Date of Patent: January 10, 2012Assignee: Medtronic, Inc.Inventors: Richard B. Streeter, Gregory H. Lambrecht, John R. Liddicoat, Robert Kevin Moore, Todd F. Davenport
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Publication number: 20110118830Abstract: Methods for replacing native valve function of a diseased aortic valve are disclosed. In an embodiment, a method for replacing native valve function of a diseased aortic valve in a patient includes: (a) receiving an artificial heart valve assembly mounted about a first mounting position on a catheter system, (b) guiding the artificial heart valve assembly through the vasculature of the patient, (c) while the catheter system having the artificial heart valve assembly mounted thereto is in the patient's vasculature, mounting the artificial heart valve assembly about a second mounting position on the catheter system, (d) delivering the artificial heart valve assembly to the region of the diseased aortic valve, (e) expanding the artificial heart valve assembly in the region of the diseased aortic valve, and (f) withdrawing the catheter system from the patient's vasculature.Type: ApplicationFiled: January 24, 2011Publication date: May 19, 2011Inventors: John R. LIDDICOAT, Gregory H. Lambrecht, Todd F. Davenport, William E. Cohn, Steven B. Woolfson, Daniel C. Taylor
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Publication number: 20100280540Abstract: Apparatus for filtering and entrapping debris in the vascular system of a patient, the apparatus including a filter to allow blood to flow therethrough and to restrict passage of debris, wherein the filter captures debris carried in a first direction of blood flow. The apparatus further includes an entrapment mechanism which allows passage of debris and blood therethrough, in the first direction of blood flow and prevents debris passage in a second direction. The entrapment mechanism and filter allow blood and debris therethrough in the first direction of blood flow. The entrapment mechanism prevents debris flow in the second direction of blood flow. A method for filtering and entrapping debris in the vascular system includes inserting the apparatus into the vascular system, allowing blood and debris carried therein to flow through the entrapment mechanism, and removing the apparatus and accumulated debris from the vascular system.Type: ApplicationFiled: June 14, 2010Publication date: November 4, 2010Inventors: Richard B. Streeter, Gregory H. Lambrecht, John R. Liddicoat, Robert Kevin Moore, Todd F. Davenport
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Publication number: 20100249921Abstract: Devices and methods for performing intravascular procedures without cardiac bypass include embodiments of temporary filter devices, temporary valves, and prosthetic valves. The temporary filter devices have a cannula which provides access for surgical tools for effecting repair of cardiac valves. The cannula may have filters which prevent embolitic material from entering the coronary arteries and aorta. The valve devices may also have a cannula for insertion of the valve into the aorta. The valve devices expand in the aorta to occupy the entire flow path of the vessel and operate to prevent blood flow and to permit flow through the valve. The prosthetic valves include valve fixation devices which secure the prosthetic valve to the wall of the vessel. The prosthetic valves are introduced into the vascular system in a compressed state, advanced to the site of implantation, and expanded and secured to the vessel wall.Type: ApplicationFiled: June 9, 2010Publication date: September 30, 2010Inventors: William E. Cohn, Gregory H. Lambrecht, John R. Liddicoat, Robert Kevin Moore, Richard B. Streeter, Todd F. Davenport
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Publication number: 20100217227Abstract: A system comprising: a hollow tube having a distal end, a proximal end, and a lumen extending between the distal end and the proximal end; at least a portion of the tube comprising a porous membrane; and a gas-rich perfluorocarbon solution incorporated in the porous membrane; wherein the porous membrane has a porosity in the range of 0.001-200 microns, in order that: (i) the gas-rich perfluorocarbon solution is effectively incorporated into the porous membrane; and (ii) when the porous membrane is positioned in blood, the gas-rich perfluorocarbon solution elutes out of the porous membrane, in aggregations small enough to prevent the creation of embolisms in the blood, with the elution of the gas-rich perfluorocarbon solution into the blood varying between minutes and several hours, depending on the temperature and the hemodynamics of the blood. A novel medical wire is also disclosed herein.Type: ApplicationFiled: October 13, 2009Publication date: August 26, 2010Inventors: Michael Braun, John S. Geis, Todd F. Davenport
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Publication number: 20100217384Abstract: Methods for replacing native valve function of a diseased aortic valve are disclosed. In an embodiment, a method for replacing native valve function of a diseased aortic valve in a patient includes: (a) receiving an artificial heart valve assembly mounted about a first mounting position on a catheter system, (b) guiding the artificial heart valve assembly through the vasculature of the patient, (c) while the catheter system having the artificial heart valve assembly mounted thereto is in the patient's vasculature, mounting the artificial heart valve assembly about a second mounting position on the catheter system, (d) delivering the artificial heart valve assembly to the region of the diseased aortic valve, (e) expanding the artificial heart valve assembly in the region of the diseased aortic valve, and (f) withdrawing the catheter system from the patient's vasculature.Type: ApplicationFiled: May 7, 2010Publication date: August 26, 2010Applicant: Medtronic Vascular, Inc.Inventors: John R. LIDDICOAT, Gregory H. Lambrecht, Todd F. Davenport, William E. Cohn, Steven B. Woolfson, Daniel C. Taylor
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Patent number: 7758606Abstract: Apparatus for filtering and entrapping debris in the vascular system of a patient, the apparatus including a filter to allow blood to flow therethrough and to restrict passage of debris, wherein the filter captures debris carried in a first direction of blood flow. The apparatus further includes an entrapment mechanism which allows passage of debris and blood therethrough, in the first direction of blood flow and prevents debris passage in a second direction. The entrapment mechanism and filter allow blood and debris therethrough in the first direction of blood flow. The entrapment mechanism prevents debris flow in the second direction of blood flow. A method for filtering and entrapping debris in the vascular system includes inserting the apparatus into the vascular system, allowing blood and debris carried therein to flow through the entrapment mechanism, and removing the apparatus and accumulated debris from the vascular system.Type: GrantFiled: February 5, 2004Date of Patent: July 20, 2010Assignee: Medtronic, Inc.Inventors: Richard B. Streeter, Gregory H. Lambrecht, John R. Liddicoat, Robert Kevin Moore, Todd F. Davenport
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Patent number: 7749245Abstract: Devices and methods for performing intravascular procedures without cardiac bypass include embodiments of temporary filter devices, temporary valves, and prosthetic valves. The temporary filter devices have a cannula which provides access for surgical tools for effecting repair of cardiac valves. The cannula may have filters which prevent embolitic material from entering the coronary arteries and aorta. The valve devices may also have a cannula for insertion of the valve into the aorta. The valve devices expand in the aorta to occupy the entire flow path of the vessel and operate to prevent blood flow and to permit flow through the valve. The prosthetic valves include valve fixation devices which secure the prosthetic valve to the wall of the vessel. The prosthetic valves are introduced into the vascular system in a compressed state, advanced to the site of implantation, and expanded and secured to the vessel wall.Type: GrantFiled: November 13, 2003Date of Patent: July 6, 2010Assignee: Medtronic, Inc.Inventors: William E. Cohn, Gregory H. Lambrecht, John R. Liddicoat, Robert Kevin Moore, Richard B. Streeter, Todd F. Davenport
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Publication number: 20090326508Abstract: A system comprising: a hollow tube having a distal end, a proximal end, and a lumen extending between the distal end and the proximal end; at least a portion of the tube comprising a porous membrane; and a pharmacological agent incorporated in the porous membrane; wherein the porous membrane has a porosity such that: (i) the pharmacological agent is effectively incorporated into the porous membrane; and (ii) when the porous membrane is positioned in blood, the pharmacological agent elutes out of the porous membrane at a rate which matches the desired rate of dosage for the pharmacological agent.Type: ApplicationFiled: May 27, 2009Publication date: December 31, 2009Inventors: Michael Braun, John S. Geis, Todd F. Davenport
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Patent number: 7241310Abstract: 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: GrantFiled: January 14, 2003Date of Patent: July 10, 2007Inventors: Daniel C. Taylor, William E. Cohn, John R. Liddicoat, Steven B. Woolfson, Todd F. Davenport, Richard B. Streeter, Thomas F. Kordis, Jonathan Rourke
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Patent number: 7186264Abstract: 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: GrantFiled: March 29, 2002Date of Patent: March 6, 2007Assignee: Viacor, Inc.Inventors: John R. Liddicoat, Daniel C. Taylor, Richard B. Streeter, Steven B. Woolfson, William E. Cohn, Todd F. Davenport
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Patent number: 7052487Abstract: 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: GrantFiled: October 25, 2002Date of Patent: May 30, 2006Inventors: William E. Cohn, John R. Liddicoat, Steven B. Woolfson, Todd F. Davenport, Richard B. Streeter
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Patent number: 6890330Abstract: Apparatus is disclosed for providing access to a functioning vascular system of a patient, the apparatus comprising: a main body having sidewalls defining an interior region and an exterior region, a bottom end and a top end; a base being formed at the bottom end of the main body, securing means being configured on the base so as to allow attachment and formation of a seal between the base and the functioning vascular system of the patient, and the base being configurable to provide a passageway from the interior region of the main body to the functioning vascular system of the patient; and a cover being formed at the top end of the main body, wherein the cover provides a barrier between the interior region and the exterior region at the top end of the main body.Type: GrantFiled: October 26, 2001Date of Patent: May 10, 2005Assignee: Viacor, Inc.Inventors: Richard B. Streeter, John R. Liddicoat, Todd F. Davenport
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Patent number: 6769434Abstract: 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: GrantFiled: June 29, 2001Date of Patent: August 3, 2004Assignee: Viacor, Inc.Inventors: John R. Liddicoat, Gregory H. Lambrecht, Todd F. Davenport, William E. Cohn, Steven B. Woolfson, Daniel C. Taylor
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Patent number: 6692513Abstract: Apparatus for filtering and entrapping debris in the vascular system of a patient, the apparatus including a filter to allow blood to flow therethrough and to restrict passage of debris, wherein the filter captures debris carried in a first direction of blood flow. The apparatus further includes an entrapment mechanism which allows passage of debris and blood therethrough, in the first direction of blood flow and prevents debris passage in a second direction. The entrapment mechanism and filter allow blood and debris therethrough in the first direction of blood flow. The entrapment mechanism prevents debris flow in the second direction of blood flow A method for filtering and entrapping debris in the vascular system includes inserting the apparatus into the vascular system, allowing blood and debris carried therein to flow through the entrapment mechanism, and removing the apparatus and accumulated debris from the vascular system.Type: GrantFiled: June 29, 2001Date of Patent: February 17, 2004Assignee: Viacor, Inc.Inventors: Richard B. Streeter, Gregory H. Lambrecht, John R. Liddicoat, Robert Kevin Moore, Todd F. Davenport