Patents by Inventor Norman R. Weldon
Norman R. Weldon 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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Publication number: 20210369436Abstract: An endovascular system includes inner and outer catheters, a handle system operably coupled one end of the catheters, and a microvalve coupled to the other end of the catheters. The microvalve is constrained in a radially-collapsed closed configuration for advancement within a vessel to a treatment site. The handle system is operable to displace the inner and outer catheters portions relative to each other to move the microvalve between closed and open configurations. An indicator is provided to visually indicate the extent by which the microvalve is opened within the vessel.Type: ApplicationFiled: June 23, 2021Publication date: December 2, 2021Applicant: Surefire Medical, Inc.Inventors: Leonard Pinchuk, James E. Chomas, John B. Martin, Aravind Arepally, Brett E. Naglreiter, Norman R. Weldon, Bryan M. Pinchuk
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Patent number: 9539081Abstract: An endovascular valve device for use in a vessel during a therapy procedure includes a catheter having at its distal end a valve. The valve is constructed of a braid of elongate first filaments coupled together at their proximal ends in a manner that the first filaments are movable relative to each other along their lengths. The first filaments have a spring bias that radially expands the valve. A filter is provided to the braid formed by electrostatically depositing or spinning polymeric second filaments onto the braided first filaments. The lumen of the catheter is in communication with the center of the valve. The device is used to provide a therapy in which a therapeutic agent is infused into an organ.Type: GrantFiled: November 29, 2011Date of Patent: January 10, 2017Assignee: Surefire Medical, Inc.Inventors: James E. Chomas, Leonard Pinchuk, John Martin, Aravind Arepally, Brett E. Naglreiter, Norman R. Weldon, Bryan M. Pinchuk
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Patent number: 9295540Abstract: An apparatus includes a delivery catheter having a deployable dynamic valve that rapidly opens and closes in response to relative fluid pressure thereabout. The valve is maintained in a collapsed configuration during introduction to a treatment site. A balloon element is provided between the delivery catheter and the valve and is adapted such that upon inflation it can move the valve from the collapsed configuration to a deployed configuration.Type: GrantFiled: January 27, 2014Date of Patent: March 29, 2016Assignee: Surefire Medical, Inc.Inventors: James E. Chomas, Leonard Pinchuk, John Martin, Aravind Arepally, Brett E. Naglreiter, Norman R. Weldon, Bryan M. Pinchuk
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Publication number: 20150238255Abstract: A neuromodulation device includes an ablation valve with electrodes provided about its circumference. The valve dynamically reacts to fluid pressure within the vessel. When a pressure within and distal said ablation valve is greater than the body fluid pressure within the vessel, said ablation valve closes and the electrodes move out of contact with the endothelium of the vessel. When a pressure within and distal the ablation valve is less than the body fluid pressure upstream of the valve, the valve opens such that the electrodes are in circumferential contact with the endothelium. Fluid can be injected into the valve to alter the local pressure about the valve and force the electrodes into contact with the endothelium.Type: ApplicationFiled: May 11, 2015Publication date: August 27, 2015Applicant: SUREFIRE MEDICAL, INC.Inventors: James E. Chomas, Norman R. Weldon, Leonard Pinchuk
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Patent number: 9089668Abstract: A flow directional infusion device includes a filter valve located at the distal end of a catheter. The filter valve constrains delivery of an embolic agent through the catheter to the locus of the aneurysm. In order to provide such delivery, the valve includes a longitudinal opening, radial opening or is otherwise partially permeable in a direction of the aneurysm so that the embolic agent or a delivery element for such agent is limited toward the aneurysm. In addition, the filter valve permits and directs blood flow within the blood vessel about the aneurysm during the treatment without obstructing the vessel and without allowing retrograde flow of the embolic agent in the vessel upstream of the aneurysm.Type: GrantFiled: September 12, 2012Date of Patent: July 28, 2015Assignee: SUREFIRE MEDICAL, INC.Inventors: James E. Chomas, Norman R. Weldon, Leonard Pinchuk
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Patent number: 9089341Abstract: A neuromodulation device includes an ablation valve with electrodes provided about its circumference. The valve dynamically reacts to fluid pressure within the vessel. When a pressure within and distal said ablation valve is greater than the body fluid pressure within the vessel, said ablation valve closes and the electrodes move out of contact with the endothelium of the vessel. When a pressure within and distal the ablation valve is less than the body fluid pressure upstream of the valve, the valve opens such that the electrodes are in circumferential contact with the endothelium. Fluid can be injected into the valve to alter the local pressure about the valve and force the electrodes into contact with the endothelium.Type: GrantFiled: February 28, 2012Date of Patent: July 28, 2015Assignee: SUREFIRE MEDICAL, INC.Inventors: James E. Chomas, Norman R. Weldon, Leonard Pinchuk
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Patent number: 9044570Abstract: Methods and devices for the stabilization of heart tissue to treat congestive heart failure using a therapeutic composition are discussed. The therapeutic composition can comprise an elastin stabilization agent, a collagen stabilization agent, or a combination thereof and be applied to the pericardium, to the outer surface of the myocardium, or a combination thereof using a catheter type of device with an attached reservoir. Controlled placement and release of the therapeutic composition can be achieved using a delivery vehicle to formulate the composition.Type: GrantFiled: May 24, 2013Date of Patent: June 2, 2015Assignee: Tangio, Inc.Inventors: Norman R. Weldon, Matthew F. Ogle
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Publication number: 20140207178Abstract: An apparatus includes a delivery catheter having a deployable dynamic valve that rapidly opens and closes in response to relative fluid pressure thereabout. The valve is maintained in a collapsed configuration during introduction to a treatment site. A balloon element is provided between the delivery catheter and the valve and is adapted such that upon inflation it can move the valve from the collapsed configuration to a deployed configuration.Type: ApplicationFiled: January 27, 2014Publication date: July 24, 2014Applicant: Surefire Medical, Inc.Inventors: James E. Chomas, Leonard Pinchuk, John Martin, Aravind Arepally, Brett E. Naglreiter, Norman R. Weldon, Bryan M. Pinchuk
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Patent number: 8696698Abstract: An apparatus is provided that is useful in an embolization procedure and enables substantially unrestricted forward flow of blood in a vessel and reduces or stops reflux (regurgitation or backward flow) of embolization agents which are introduced into the blood. A method of using the apparatus is also provided.Type: GrantFiled: December 1, 2010Date of Patent: April 15, 2014Assignee: Surefire Medical, Inc.Inventors: James E. Chomas, Leonard Pinchuk, John Martin, Aravind Arepally, Brett E. Naglreiter, Norman R. Weldon, Bryan M. Pinchuk
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Patent number: 8696699Abstract: An endovascular valve device for use in a vessel during a therapy procedure includes a catheter having at its distal end a valve. The valve is constructed of a braid of elongate first filaments coupled together at their proximal ends in a manner that the first filaments are movable relative to each other along their lengths. The first filaments have a spring bias that radially expands the valve. A filter is provided to the braid formed by electrostatically depositing or spinning polymeric second filaments onto the braided first filaments. The lumen of the catheter is in communication with the center of the valve.Type: GrantFiled: October 25, 2011Date of Patent: April 15, 2014Assignee: Surefire Medical, Inc.Inventors: James E. Chomas, Leonard Pinchuk, John Martin, Aravind Arepally, Brett E. Naglreiter, Norman R. Weldon, Bryan M. Pinchuk
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Publication number: 20130253429Abstract: Methods and devices for the stabilization of heart tissue to treat congestive heart failure using a therapeutic composition are discussed. The therapeutic composition can comprise an elastin stabilization agent, a collagen stabilization agent, or a combination thereof and be applied to the pericardium, to the outer surface of the myocardium, or a combination thereof using a catheter type of device with an attached reservoir. Controlled placement and release of the therapeutic composition can be achieved using a delivery vehicle to formulate the composition.Type: ApplicationFiled: May 24, 2013Publication date: September 26, 2013Applicant: Vatrix Medical, Inc.Inventors: Norman R. Weldon, Matthew F. Ogle
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Publication number: 20130226166Abstract: A neuromodulation device includes an ablation valve with electrodes provided about its circumference. The valve dynamically reacts to fluid pressure within the vessel. When a pressure within and distal said ablation valve is greater than the body fluid pressure within the vessel, said ablation valve closes and the electrodes move out of contact with the endothelium of the vessel. When a pressure within and distal the ablation valve is less than the body fluid pressure upstream of the valve, the valve opens such that the electrodes are in circumferential contact with the endothelium. Fluid can be injected into the valve to alter the local pressure about the valve and force the electrodes into contact with the endothelium.Type: ApplicationFiled: February 28, 2012Publication date: August 29, 2013Inventors: James E. Chomas, Norman R. Weldon, Leonard Pinchuk
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Patent number: 8496911Abstract: Methods and devices for the stabilization of heart tissue to treat congestive heart failure using a therapeutic composition are discussed. The therapeutic composition can comprise an elastin stabilization agent, a collagen stabilization agent, or a combination thereof and be applied to the pericardium, to the outer surface of the myocardium, or a combination thereof using a catheter type of device with an attached reservoir. Controlled placement and release of the therapeutic composition can be achieved using a delivery vehicle to formulate the composition.Type: GrantFiled: July 28, 2010Date of Patent: July 30, 2013Assignee: Vatrix CHF, Inc.Inventors: Norman R. Weldon, Matthew F. Ogle
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Publication number: 20130079731Abstract: A flow directional infusion device includes a filter valve located at the distal end of a catheter. The filter valve constrains delivery of an embolic agent through the catheter to the locus of the aneurysm. In order to provide such delivery, the valve includes a longitudinal opening, radial opening or is otherwise partially permeable in a direction of the aneurysm so that the embolic agent or a delivery element for such agent is limited toward the aneurysm. In addition, the filter valve permits and directs blood flow within the blood vessel about the aneurysm during the treatment without obstructing the vessel and without allowing retrograde flow of the embolic agent in the vessel upstream of the aneurysm.Type: ApplicationFiled: September 12, 2012Publication date: March 28, 2013Inventors: James E. Chomas, Norman R. Weldon, Leonard Pinchuk
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Publication number: 20120116351Abstract: An endovascular valve device for use in a vessel during a therapy procedure includes a catheter having at its distal end a valve. The valve is constructed of a braid of elongate first filaments coupled together at their proximal ends in a manner that the first filaments are movable relative to each other along their lengths. The first filaments have a spring bias that radially expands the valve. A filter is provided to the braid formed by electrostatically depositing or spinning polymeric second filaments onto the braided first filaments. The lumen of the catheter is in communication with the center of the valve. The device is used to provide a therapy in which a therapeutic agent is infused into an organ.Type: ApplicationFiled: November 29, 2011Publication date: May 10, 2012Inventors: James E. Chomas, Leonard Pinchuk, John Martin, Aravind Arepally, Brett E. Naglreiter, Norman R. Weldon, Bryan M. Pinchuk
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Publication number: 20120089102Abstract: An endovascular valve device for use in a vessel during a therapy procedure includes a catheter having at its distal end a valve. The valve is constructed of a braid of elongate first filaments coupled together at their proximal ends in a manner that the first filaments are movable relative to each other along their lengths. The first filaments have a spring bias that radially expands the valve. A filter is provided to the braid formed by electrostatically depositing or spinning polymeric second filaments onto the braided first filaments. The lumen of the catheter is in communication with the center of the valve.Type: ApplicationFiled: October 25, 2011Publication date: April 12, 2012Inventors: James E. Chomas, Leonard Pinchuk, John Martin, Aravind Arepally, Brett E. Naglreiter, Norman R. Weldon, Bryan M. Pinchuk
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Publication number: 20110137399Abstract: An apparatus is provided that is useful in an embolization procedure and enables substantially unrestricted forward flow of blood in a vessel and reduces or stops reflux (regurgitation or backward flow) of embolization agents which are introduced into the blood. A method of using the apparatus is also provided.Type: ApplicationFiled: December 1, 2010Publication date: June 9, 2011Inventors: James E. Chomas, Leonard Pinchuk, John Martin, Aravind Arepally, Brett E. Naglreiter, Norman R. Weldon, Bryan M. Pinchuk
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Publication number: 20110081423Abstract: Methods and devices for the stabilization of heart tissue to treat congestive heart failure using a therapeutic composition are discussed. The therapeutic composition can comprise an elastin stabilization agent, a collagen stabilization agent, or a combination thereof and be applied to the pericardium, to the outer surface of the myocardium, or a combination thereof using a catheter type of device with an attached reservoir. Controlled placement and release of the therapeutic composition can be achieved using a delivery vehicle to formulate the composition.Type: ApplicationFiled: July 28, 2010Publication date: April 7, 2011Inventors: Norman R. Weldon, Matthew F. Ogle
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Patent number: 5935141Abstract: A surgical instrument includes a proximal actuation handle and a flexible guiding catheter having a channeling lumen, a suction lumen, and a control lumen. The guiding catheter has a slit opening into the control lumen at its distal end. A hollow cutting member extends through the channeling lumen and is moveable distally relative to the guiding catheter with a cutting actuation mechanism. The cutting member is preferably a section of thin walled hypodermic tubing having a sharpened distal end and is provided with a first proximal connector for coupling the cutting member to a first pressure regulator. A flexible control wire extends through the control lumen and is movable distally and rotatably relative to the guiding catheter with a control actuation mechanism. The control wire is sufficiently flexible to buckle with each contraction of the heart and has a foot at its distal end located beyond the distal end of the guiding catheter and movable relative thereto by movement of the control wire.Type: GrantFiled: October 30, 1997Date of Patent: August 10, 1999Assignee: Partisan Management GroupInventor: Norman R. Weldon
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Patent number: 5084065Abstract: A reinforced graft assembly made from a vascular graft component and a reinforcing sleeve component. The reinforcing sleeve component may include one or more layers. The diameter of the inner surface of the most internal layer of the reinforcing sleeve component is approximately equal to or larger than the diameter of the vascular graft component thereby allowing the former to be fitted over the latter. The compliance of the sleeve component is adjustable depending on the application needs, for example, by varying the angle at which the fibers used to form the sleeve component are laid down and by the method used to join the two components.Type: GrantFiled: July 10, 1989Date of Patent: January 28, 1992Assignee: Corvita CorporationInventors: Norman R. Weldon, David C. MacGregor