Patents by Inventor Gholam-Reza Zadno-Azizi
Gholam-Reza Zadno-Azizi 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: 20050228401Abstract: There is disclosed an accommodating intraocular lens for implantation in an eye having an optical axis. The lens comprises an anterior portion which in turn comprises an anterior viewing element and an anterior biasing element. The lens further comprises a posterior portion which in turn comprises a posterior viewing element in spaced relationship to the anterior viewing element and a posterior biasing element. The anterior portion and posterior portion meet at first and second apices of the intraocular lens. The anterior portion and the posterior portion and/or the apices are responsive to force thereon to cause the separation between the viewing elements to change. Additional embodiments and methods are also disclosed.Type: ApplicationFiled: March 15, 2005Publication date: October 13, 2005Inventors: Gholam-Reza Zadno-Azizi, Tuan Nguyen
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Publication number: 20050165410Abstract: There is disclosed an accommodating intraocular lens for implantation in an eye having an optical axis. The lens comprises an anterior portion which in turn comprises an anterior viewing element and an anterior biasing element. The lens further comprises a posterior portion which in turn comprises a posterior viewing element in spaced relationship to the anterior viewing element and a posterior biasing element. The anterior portion and posterior portion meet at first and second apices of the intraocular lens. The anterior portion and the posterior portion and/or the apices are responsive to force thereon to cause the separation between the viewing elements to change. Additional embodiments and methods are also disclosed.Type: ApplicationFiled: November 12, 2004Publication date: July 28, 2005Inventors: Gholam-Reza Zadno-Azizi, Tuan Nguyen
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Patent number: 6899732Abstract: There is disclosed an accommodating intraocular lens for implantation in an eye having an optical axis. The lens comprises an anterior portion which in turn comprises an anterior viewing element and an anterior biasing element. The lens further comprises a posterior portion which in turn comprises a posterior viewing element in spaced relationship to the anterior viewing element and a posterior biasing element. The anterior portion and posterior portion meet at first and second apices of the intraocular lens. The anterior portion and the posterior portion and/or the apices are responsive to force thereon to cause the separation between the viewing elements to change. Additional embodiments and methods are also disclosed.Type: GrantFiled: December 11, 2001Date of Patent: May 31, 2005Assignee: Visiogen, Inc.Inventors: Gholam-Reza Zadno-Azizi, Tuan Anh Nguyen
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Patent number: 6884261Abstract: There is disclosed a method of preparing an accommodating intraocular lens having an optical axis for subsequent implantation. The method comprises providing an intraocular lens having first and second viewing elements interconnected by plural members. At least a portion of the members are disposed from the optical axis by a distance greater than a periphery of at least one of the viewing elements. The distance is measured orthogonal to the optical axis. The method further comprises drawing the members inwardly toward the optical axis by relatively rotating the first and second viewing elements. The method further comprises increasing the separation between the viewing elements along the optical axis while drawing the members inwardly.Type: GrantFiled: July 25, 2002Date of Patent: April 26, 2005Assignee: Visiogen, Inc.Inventors: Gholam-Reza Zadno-Azizi, Tuan Anh Nguyen
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Publication number: 20050055092Abstract: There is disclosed an accommodating intraocular lens for implantation in an eye having an optical axis. The lens comprises an anterior portion which in turn comprises an anterior viewing element and an anterior biasing element. The lens further comprises a posterior portion which in turn comprises a posterior viewing element in spaced relationship to the anterior viewing element and a posterior biasing element. The anterior portion and posterior portion meet at first and second apices of the intraocular lens. The anterior portion and the posterior portion and/or the apices are responsive to force thereon to cause the separation between the viewing elements to change. Additional embodiments and methods are also disclosed.Type: ApplicationFiled: June 25, 2004Publication date: March 10, 2005Inventors: Tuan Nguyen, Valdemar Portney, Gholam-Reza Zadno-Azizi, Albert Ting
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Publication number: 20050049700Abstract: There is disclosed an accommodating intraocular lens for implantation in an eye having an optical axis. The lens comprises an anterior portion which in turn comprises an anterior viewing element and an anterior biasing element. The lens further comprises a posterior portion which in turn comprises a posterior viewing element in spaced relationship to the anterior viewing element and a posterior biasing element. The anterior portion and posterior portion meet at first and second apices of the intraocular lens. The anterior portion and the posterior portion and/or the apices are responsive to force thereon to cause the separation between the viewing elements to change. Additional embodiments and methods are also disclosed.Type: ApplicationFiled: June 25, 2004Publication date: March 3, 2005Inventors: Gholam-Reza Zadno-Azizi, Valdemar Portney, Erica Rogers, Tuan Nguyen, Albert Ting
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Patent number: 6858040Abstract: There is disclosed an accommodating intraocular lens for implantation in an eye having an optical axis. The lens comprises an anterior portion which in turn comprises an anterior viewing element and an anterior biasing element. The lens further comprises a posterior portion which in turn comprises a posterior viewing element in spaced relationship to the anterior viewing element and a posterior biasing element. The anterior portion and posterior portion meet at first and second apices of the intraocular lens. The anterior portion and the posterior portion and/or the apices are responsive to force thereon to cause the separation between the viewing elements to change. Additional embodiments and methods are also disclosed.Type: GrantFiled: December 11, 2001Date of Patent: February 22, 2005Assignee: Visiogen, Inc.Inventors: Tuan Anh Nguyen, Valdemar Portney, Gholam-Reza Zadno-Azizi, Albert C. Ting
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Patent number: 6846326Abstract: There is disclosed an accommodating intraocular lens for implantation in an eye having an optical axis. The lens comprises an anterior portion which in turn comprises an anterior viewing element and an anterior biasing element. The lens further comprises a posterior portion which in turn comprises a posterior viewing element in spaced relationship to the anterior viewing element and a posterior biasing element. The anterior portion and posterior portion meet at first and second apices of the intraocular lens. The anterior portion and the posterior portion and/or the apices are responsive to force thereon to cause the separation between the viewing elements to change. Additional embodiments and methods are also disclosed.Type: GrantFiled: December 11, 2001Date of Patent: January 25, 2005Assignee: Visiogen, Inc.Inventors: Gholam-Reza Zadno-Azizi, Valdemar Portney, Tuan Anh Nguyen
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Patent number: 6805692Abstract: A method for the treatment of a stenosis or an occlusion in a blood vessel in which an occlusive device is first delivered and activated at a site distal to the occlusion to at least partially occlude the vessel. A therapy catheter is then introduced to treat the occlusion and a debris removal device is delivered to aspirate debris from the vessel. The present invention eliminates the need for a separate irrigation catheter and irrigation fluid which allows the procedure to be performed quickly and efficiently, and is especially useful in the removal of occlusion from saphenous vein grafts, the coronary and carotid arteries, arteries above the aortic arch and vessels of similar size and pressure.Type: GrantFiled: August 5, 2002Date of Patent: October 19, 2004Assignee: Medtronic AVE, Inc.Inventors: Ketan P. Muni, Gholam Reza Zadno-Azizi, Celso Bagaoisan
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Patent number: 6790204Abstract: A method for the treatment of a stenosis or an occlusion in a blood vessel is disclosed in which a main catheter is first delivered to a site proximal to the occlusion. The main catheter may include an occlusive device at its distal end. An inner catheter or elongate member (e.g., a guidewire) having an occlusive device at its distal end is delivered to the site of the occlusion, and the occlusive device is activated at a site distal to the occlusion. A therapy catheter is then introduced to treat the occlusion. Next, a catheter is delivered just proximal to the occlusive device, and this catheter is used to aspirate and/or irrigate the area removing particles and debris. The aspiration and irrigation steps are preferably repeated until the particles and debris are removed. Perfusion may be performed by using a perfusion-filter distal of the lesion to be treated or a hypotube which extends beyond the occlusive device attached to the guidewire.Type: GrantFiled: April 15, 2003Date of Patent: September 14, 2004Assignee: Medtronic Vascular, Inc.Inventors: Gholam-Reza Zadno-Azizi, Mukund R. Patel, Ketan P. Muni, Celso J. Bagaosian, Hung V. Ha
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Patent number: 6786934Abstract: There is disclosed an accommodating intraocular lens for implantation in an eye having an optical axis. The lens has an anterior portion which in turn includes an anterior viewing element and an anterior biasing element. The lens also has a posterior portion which in turn includes a posterior viewing element in spaced relationship to the anterior viewing element and a posterior biasing element. The anterior portion and posterior portion meet at first and second apices of the intraocular lens. The anterior portion and the posterior portion and/or the apices are responsive to force thereon to cause the separation between the viewing elements to change. Additional embodiments and methods are also disclosed.Type: GrantFiled: December 11, 2001Date of Patent: September 7, 2004Assignee: Visiogen, Inc.Inventors: Gholam-Reza Zadno-Azizi, Tuan Anh Nguyen, Albert C. Ting, Valdemar Portney
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Patent number: 6786888Abstract: A low profile catheter valve comprises a movable sealer portion positioned within the inflation lumen of a catheter. The sealer portion forms a fluid tight seal with the inflation lumen by firmly contacting the entire circumference of a section of the inflation lumen. The sealer portion may be positioned proximally of a side-access inflation port on the catheter, to establish an unrestricted fluid pathway between the inflation port and an inflatable balloon on the distal end of the catheter. As desired, the clinician may move the sealer portion to a position distal of the inflation port, thereby preventing any fluid from being introduced into or withdrawn from the balloon via the inflation port.Type: GrantFiled: October 6, 2000Date of Patent: September 7, 2004Assignee: Medtronic AVE, Inc.Inventors: Gholam-Reza Zadno-Azizi, Celso J. Bagaoisan, Jefferey C. Bleam
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Patent number: 6764511Abstract: There is disclosed an accommodating intraocular lens for implantation in an eye having an optical axis. The lens comprises an anterior portion which in turn comprises an anterior viewing element and an anterior biasing element. The lens further comprises a posterior portion which in turn comprises a posterior viewing element in spaced relationship to the anterior viewing element and a posterior biasing element. The anterior portion and posterior portion meet at first and second apices of the intraocular lens. The anterior portion and the posterior portion and/or the apices are responsive to force thereon to cause the separation between the viewing elements to change. Additional embodiments and methods are also disclosed.Type: GrantFiled: December 11, 2001Date of Patent: July 20, 2004Assignee: Visiogen, Inc.Inventors: Gholam-Reza Zadno-Azizi, Valdemar Portney, Erica J. Rogers, Tuan Anh Nguyen, Albert C. Ting
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Patent number: 6761737Abstract: There is disclosed an accommodating intraocular lens for implantation in an eye having an optical axis. The lens comprises an anterior portion which in turn comprises an anterior viewing element and an anterior biasing element. The lens further comprises a posterior portion which in turn comprises a posterior viewing element in spaced relationship to the anterior viewing element and a posterior biasing element. The anterior portion and posterior portion meet at first and second apices of the intraocular lens. The anterior portion and the posterior portion and/or the apices are responsive to force thereon to cause the separation between the viewing elements to change. Additional embodiments and methods are also disclosed.Type: GrantFiled: December 11, 2001Date of Patent: July 13, 2004Assignee: Visiogen, Inc.Inventors: Gholam-Reza Zadno-Azizi, Tuan Anh Nguyen, Valdemar Portney, Albert C. Ting
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Publication number: 20040054347Abstract: A method for the treatment of a stenosis or an occlusion in a blood vessel is disclosed in which a main catheter is first delivered to a site proximal to the occlusion. The main catheter may include an occlusive device at its distal end. An inner catheter or elongate member (e.g., a guidewire) having an occlusive device at its distal end is delivered to the site of the occlusion, and the occlusive device is activated at a site distal to the occlusion. A therapy catheter is then introduced to treat the occlusion. Next, a catheter is delivered just proximal to the occlusive device, and this catheter is used to aspirate and/or irrigate the area removing particles and debris. The aspiration and irrigation steps are preferably repeated until the particles and debris are removed. Perfusion may be performed by using a perfusion-filter distal of the lesion to be treated or a hypotube which extends beyond the occlusive device attached to the guidewire.Type: ApplicationFiled: April 15, 2003Publication date: March 18, 2004Inventors: Gholam-Reza Zadno-Azizi, Mukund R. Patel, Ketan P. Muni, Celso J. Bagaoisan, Hung V. Ha
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Publication number: 20040015150Abstract: Disclosed herein is a catheter for use in an emboli containment system. In one embodiment, the catheter includes a flexible elongate member having self-expanding sealing means mounted on its distal extremity. This self-expanding sealing means can take any suitable form, such as a braided structure formed of a suitable shape memory material such as a nickel titanium alloy. In order to prevent abrasion of a vessel, it is desirable to cover the braided structure with a covering of a suitable material such as a polymer which extends over the braided structure and which moves with the braided structure as it expands and contracts.Type: ApplicationFiled: April 30, 2003Publication date: January 22, 2004Inventor: Gholam-Reza Zadno-Azizi
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Patent number: 6652480Abstract: A method for reducing distal embolization during insertion of devices to treat plaque, thrombi and other intravascular occlusions. Using a guide catheter, a guidewire is delivered to a site proximal to the lesion. An aspiration catheter is then introduced over the guidewire, and the two are moved together in a distal to proximal direction across the occlusion. The aspiration catheter is then moved in a proximal to distal direction while continuously aspirating, which prevents embolization of any particles which may be created during the crossing of the guidewire.Type: GrantFiled: November 10, 1999Date of Patent: November 25, 2003Assignee: Medtronic Ave., Inc.Inventors: Mir A. Imran, Ketan P. Muni, Gholam-Reza Zadno-Azizi
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Publication number: 20030212452Abstract: A device to provide body fluid flow control in the form of a valve to be located within a duct or passageway. The device is controlled through pressure above a preselected threshold. Bulk resilience about a passageway in a valve body provides the mechanism for controlled flow. One-way valve operation may be provided through a flap or through a pressure differential on the valve body depending upon the direction of flow. A frame structure positioned within a resilient seal includes longitudinally elongate elements which may be of spring material, malleable material or heat recoverable material so as to accomplish an initial insertion state and an expanded anchoring state. A valve support transitions between the resilient seal portion and the valve body to insure that the states do not change the threshold opening pressure. Insertion devices may be employed to position and actuate a change of state of the frame in the body duct or passageway.Type: ApplicationFiled: June 3, 2003Publication date: November 13, 2003Inventors: Gholam-Reza Zadno-Azizi, John S. Ford, April Marano-Ford
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Publication number: 20030208222Abstract: Disclosed herein is a catheter for use in an emboli containment system. In one embodiment, the catheter has a tubular body with a metallic braid construction. Two lumens extend through the tubular body, the lumen being in a side-by-side configuration. One of the lumens functions as an inflation lumen, and is in fluid communication with an inflatable balloon mounted on the distal end of the catheter. The second lumen is adapted to receive other therapeutic catheters which comprise the emboli containment system. In another embodiment, apparatus is provided for treatment of a stenosis in a lumen in a blood-carrying vessel comprising a main catheter and a therapeutic catheter. The main catheter comprises a first flexible elongate tubular member having proximal and distal extremities. A sealing element is carried on the distal extremity of the first flexible elongate tubular member.Type: ApplicationFiled: February 21, 2001Publication date: November 6, 2003Inventor: Gholam-Reza Zadno-Azizi
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Publication number: 20030199972Abstract: A device to provide body fluid flow control in the form of a valve to be located within a duct or passageway. The device is controlled through pressure above a preselected threshold. Bulk resilience about a passageway in a valve body provides the mechanism for controlled flow. One-way valve operation may be provided through a flap or through a pressure differential on the valve body depending upon the direction of flow. A frame structure positioned within a resilient seal includes longitudinally elongate elements which may be of spring material, malleable material or heat recoverable material so as to accomplish an initial insertion state and an expanded anchoring state. A valve support transitions between the resilient seal portion and the valve body to insure that the states do not change the threshold opening pressure. Insertion devices may be employed to position and actuate a change of state of the frame in the body duct or passageway.Type: ApplicationFiled: April 18, 2003Publication date: October 23, 2003Inventors: Gholam-Reza Zadno-Azizi, John S. Ford, April Marano-Ford