Patents by Inventor Gaurav Girdhar
Gaurav Girdhar 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: 11963713Abstract: Retrieval of material from vessel lumens can be improved by electrically enhancing attachment of the material to the removal device. The removal device can have a core assembly that includes a hypotube coupled to a first electrical terminal and a pushwire coupled to a second electrical terminal, the pushwire extending through the hypotube lumen. An insulating layer separates the hypotube and the pushwire, and an interventional element is coupled to a distal end of the pushwire. The interventional element can be disposed adjacent to a thrombus. An electrical signal is delivered to the interventional element to promote adhesion of the thrombus to the interventional element. The electrical signal can optionally be a periodic waveform, and the total energy delivered can be between 0.75-24,000 mJ and the peak current delivered via the electrical signal can be between 0.5-5 mA.Type: GrantFiled: June 2, 2021Date of Patent: April 23, 2024Assignee: Covidien LPInventors: Gaurav Girdhar, Hoai Nguyen
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Patent number: 11950794Abstract: Retrieval of material from vessel lumens can be improved by electrically enhancing attachment of the material to the thrombectomy system. The system can include a catheter having a distal portion configured to be positioned adjacent to a thrombus in a blood vessel, an electrode disposed at the distal portion of the catheter, and an interventional element configured to be delivered through a lumen of the catheter. The electrode and the interventional element are each configured to be electrically coupled to an extracorporeal power supply.Type: GrantFiled: October 11, 2021Date of Patent: April 9, 2024Assignee: COVIDIEN LPInventors: Hoai (Kevin) Nguyen, Gaurav Girdhar, Andyanhdzung Huynh
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Patent number: 11944334Abstract: Retrieval of material from vessel lumens can be improved by electrically enhancing attachment of the material to the thrombectomy system. The system can include a catheter having a distal portion configured to be positioned adjacent to a thrombus in a blood vessel, an electrode disposed at the distal portion of the catheter, and an interventional element configured to be delivered through a lumen of the catheter. The electrode and the interventional element are each configured to be electrically coupled to an extracorporeal power supply.Type: GrantFiled: October 7, 2021Date of Patent: April 2, 2024Assignee: COVIDIEN LPInventors: Gaurav Girdhar, Hoai (Kevin) Nguyen
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Patent number: 11944332Abstract: Retrieval of material from vessel lumens can be improved by electrically enhancing attachment of the material to the thrombectomy system. The system can include a catheter having a distal portion configured to be positioned adjacent to a thrombus in a blood vessel, an electrode disposed at the distal portion of the catheter, and an interventional element configured to be delivered through a lumen of the catheter. The electrode and the interventional element are each configured to be electrically coupled to an extracorporeal power supply.Type: GrantFiled: May 24, 2021Date of Patent: April 2, 2024Assignee: COVIDIEN LPInventors: Gaurav Girdhar, Hoai (Kevin) Nguyen
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Patent number: 11944374Abstract: Devices, systems, and methods for removing obstructions from body lumens are disclosed herein. In some embodiments, a system for removing a thrombus includes an interventional element configured to be disposed proximate to or adjacent to a thrombus within a blood vessel. The system can include a signal generator in electrical communication with the interventional element. The signal generator can be configured to deliver an electrical signal to the interventional element. The electrical signal can include a waveform having a positive phase having a peak positive current and a first duration, and a negative phase having a peak negative current and a second duration. A magnitude of the peak positive current can be greater than a magnitude of the peak negative current, and the first duration can be greater than the second duration.Type: GrantFiled: August 30, 2021Date of Patent: April 2, 2024Assignee: COVIDIEN LPInventors: Gaurav Girdhar, Hoai Nguyen
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Publication number: 20240074772Abstract: Retrieval of material from vessel lumens can be improved by electrically enhancing attachment of the material to the removal device. The removal device can have a core assembly that includes a hypotube coupled to a first electrical terminal and a pushwire coupled to a second electrical terminal, the pushwire extending through the hypotube lumen. An insulating layer separates the hypotube and the pushwire, and an interventional element is coupled to a distal end of the pushwire. The interventional element can be disposed adjacent to a thrombus. An electrical signal is delivered to the interventional element to promote adhesion of the thrombus to the interventional element. The electrical signal can optionally be a periodic waveform, and the total energy delivered can be between 0.75-24,000 mJ and the peak current delivered via the electrical signal can be between 0.5-5 mA.Type: ApplicationFiled: November 9, 2023Publication date: March 7, 2024Inventors: Gaurav Girdhar, Hoai Nguyen, Andyanhdzung Huynh, Ashok Nageswaran, Christopher Andrews
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Patent number: 11918241Abstract: In some examples, a catheter includes an expandable member configured to expand radially outward from a collapsed configuration to an expanded configuration. The expandable member is configured to be expanded and contracted in a controlled manner, e.g., in response to user actuation or automatically under the control of control circuitry of a device. For example, in some examples, control circuitry of a device can be configured to control the expandable member to expand and contract according to a predetermined expansion frequency or according to an expansion frequency determined based on a cardiac cycle of a patient.Type: GrantFiled: August 31, 2020Date of Patent: March 5, 2024Assignee: Covidien LPInventors: Eric Mintz, Syamala Rani Pulugurtha, Gaurav Girdhar, Ujwal Jalgaonkar
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Patent number: 11918242Abstract: Retrieval of material from vessel lumens can be improved by electrically enhancing attachment of the material to the thrombectomy system. The system can include a catheter having a distal portion configured to be positioned adjacent to a thrombus in a blood vessel, an electrode disposed at the distal portion of the catheter, and an interventional element configured to be delivered through a lumen of the catheter. The electrode and the interventional element are each configured to be electrically coupled to an extracorporeal power supply. The interventional element may be configured to evert over and around the clot material while current is delivered to the interventional element.Type: GrantFiled: March 2, 2021Date of Patent: March 5, 2024Assignee: COVIDIEN LPInventors: Gaurav Girdhar, Hoai Nguyen, Andyanhdzung Huynh
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Publication number: 20240033281Abstract: A method for treating an aneurysm in accordance with a particular embodiment of the present technology includes intravascularly delivering a mixture including a biopolymer (e.g., chitosan) and a chemical crosslinking agent (e.g., genipin) to an aneurysm. The method further includes mixing the biopolymer and the chemical crosslinking agent to initiate chemical crosslinking of the biopolymer. The mixture is delivered to the aneurysm via a lumen and an exit port of a catheter while the chemical crosslinking is ongoing. The mixture exits the catheter as a single cohesive strand that at least partially agglomerates to form a mass occupying at least 75% of a total internal volume of the aneurysm. During delivery of the mixture, the method includes expanding a tubular flow diverter to reinforce a neck of the aneurysm.Type: ApplicationFiled: October 10, 2023Publication date: February 1, 2024Inventors: Junwei Li, Gaurav Girdhar, John Wainwright, Yves Bayon, Ariana Pagani
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Patent number: 11850385Abstract: In some examples, a catheter includes one or more balloons that, when inflated, are configured to be apposition with vasculature or other hollow anatomical structure of a patient to help anchor the catheter within the vasculature, while still permitting fluid to flow past the inflated balloons. When inflated, the one or more balloons define one or more passageways configured to enable fluid to flow past the inflated balloons in a direction along a longitudinal axis of the catheter. For example, the catheter may comprise a plurality of balloons that are circumferentially and longitudinally staggered relative to each other.Type: GrantFiled: April 3, 2020Date of Patent: December 26, 2023Assignee: Covidien LPInventors: Ujwal Jalgaonkar, Gaurav Girdhar, Eric Mintz, Alejandra Turcios, Syamala Rani Pulugurtha
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Patent number: 11832836Abstract: Retrieval of material from vessel lumens can be improved by electrically enhancing attachment of the material to the removal device. The removal device can have a core assembly that includes a hypotube coupled to a first electrical terminal and a pushwire coupled to a second electrical terminal, the pushwire extending through the hypotube lumen. An insulating layer separates the hypotube and the pushwire, and an interventional element is coupled to a distal end of the pushwire. The interventional element can be disposed adjacent to a thrombus. An electrical signal is delivered to the interventional element to promote adhesion of the thrombus to the interventional element. The electrical signal can optionally be a periodic waveform, and the total energy delivered can be between 0.75-24,000 mJ and the peak current delivered via the electrical signal can be between 0.5-5 mA.Type: GrantFiled: January 6, 2022Date of Patent: December 5, 2023Assignee: COVIDIEN LPInventors: Gaurav Girdhar, Hoai Nguyen, Andyanhdzung Huynh, Ashok Nageswaran, Christopher Andrews
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Patent number: 11813282Abstract: A method for treating an aneurysm in accordance with a particular embodiment of the present technology includes intravascularly delivering a mixture including a biopolymer (e.g., chitosan) and a chemical crosslinking agent (e.g., genipin) to an aneurysm. The method further includes mixing the biopolymer and the chemical crosslinking agent to initiate chemical crosslinking of the biopolymer. The mixture is delivered to the aneurysm via a lumen and an exit port of a catheter while the chemical crosslinking is ongoing. The mixture exits the catheter as a single cohesive strand that at least partially agglomerates to form a mass occupying at least 75% of a total internal volume of the aneurysm. During delivery of the mixture, the method includes expanding a tubular flow diverter to reinforce a neck of the aneurysm.Type: GrantFiled: October 31, 2019Date of Patent: November 14, 2023Assignee: COVIDIEN LPInventors: Junwei Li, Gaurav Girdhar, John Wainwright, Yves Bayon, Ariana Pagani
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Publication number: 20230294223Abstract: Systems and methods for treating an aneurysm in accordance with embodiments of the present technology include intravascularly delivering an occlusive member to an aneurysm cavity and deforming a shape of the occlusive member via introduction of an embolic element to a space between the occlusive member and an inner surface of the aneurysm wall.Type: ApplicationFiled: May 25, 2023Publication date: September 21, 2023Inventors: Junwei Li, John Wainwright, Gaurav Girdhar, Stephen Sosnowski
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Publication number: 20230277187Abstract: Expandable devices for occluding bifurcation aneurysms are disclosed herein. Several of the embodiments are directed towards an expandable device comprising a mesh configured to be deployed at a treatment site including blood vessel bifurcation of a human patient so that the mesh extends across a neck of an aneurysm and prevents or limits blood flow through the mesh and into the aneurysm. The mesh can comprise one or more circumferentially discontinuous portions so that, when the device is deployed at the treatment site, the device does not substantially impede flow from a parent blood vessel to two or more branching blood vessels. Systems and methods for delivering an expandable device of the present technology are also disclosed herein.Type: ApplicationFiled: March 2, 2022Publication date: September 7, 2023Inventors: Mark Philip Ashby, Ashok Nageswaran, Eric Mintz, Gaurav Girdhar, Ujwal Ramesh Jalgaonkar, John Wainwright
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Patent number: 11724069Abstract: In some examples, a catheter includes an elongated body that includes a proximal portion and a distal portion, and one or more electroactive elements in at least one of the proximal portion or the distal portion of the elongated body. The one or more electroactive elements each include a contractive material configured contract in response to an application of an electrical signal to the respective electroactive element. The contraction of the electroactive elements is configured to change a dimension or a shape of the elongated body. The electroactive elements may be distributed around the elongated body at the distal portion of the elongated body, such as in different axial or radial positions. The electroactive elements may comprise a nickel titanium (NiTi) alloy having a Ni:Ti composition of about 50:50.Type: GrantFiled: April 30, 2019Date of Patent: August 15, 2023Assignee: Covidien LPInventors: Ujwal Jalgaonkar, Edwin Wang, Gaurav Girdhar
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Patent number: 11685007Abstract: Systems and methods for treating an aneurysm in accordance with embodiments of the present technology include intravascularly delivering an occlusive member to an aneurysm cavity and deforming a shape of the occlusive member via introduction of an embolic element to a space between the occlusive member and an inner surface of the aneurysm wall.Type: GrantFiled: November 3, 2020Date of Patent: June 27, 2023Assignee: COVIDIEN LPInventors: Junwei Li, John Wainwright, Gaurav Girdhar, Stephen Sosnowski
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Patent number: 11666350Abstract: Retrieval of material from vessel lumens can be improved by electrically enhancing attachment of the material to the thrombectomy system. The system can include a catheter having a distal portion configured to be positioned adjacent to a thrombus in a blood vessel, an electrode disposed at the distal portion of the catheter, and an interventional element configured to be delivered through a lumen of the catheter. The electrode and the interventional element are each configured to be electrically coupled to an extracorporeal power supply.Type: GrantFiled: November 17, 2020Date of Patent: June 6, 2023Assignee: COVIDIEN LPInventors: Hoai (Kevin) Nguyen, Gaurav Girdhar, Andyanhdzung Huynh
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Patent number: 11633193Abstract: Expandable devices are disclosed herein. Several of the embodiments are directed towards an expandable device comprising a mesh configured to be expanded at a blood vessel bifurcation of a human patient. The mesh may comprise a tubular body portion and one or more circumferentially discontinuous articulating portions. The mesh may be expanded such that the one or more articulating portions are positioned at an angle to the tubular body portion.Type: GrantFiled: September 3, 2020Date of Patent: April 25, 2023Assignee: COVIDIEN LPInventors: Ujwal Jalgaonkar, Eric Mintz, Gaurav Girdhar, John Wainwright, Ashok Nageswaran, Minh Dinh
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Patent number: 11633201Abstract: Retrieval of material from vessel lumens can be improved by electrically enhancing attachment of the material to the removal device. The removal device can have a core assembly that includes a hypotube coupled to a first electrical terminal and a pushwire coupled to a second electrical terminal, the pushwire extending through the hypotube lumen. An insulating layer separates the hypotube and the pushwire, and an interventional element is coupled to a distal end of the pushwire. The interventional element can be disposed adjacent to a thrombus. An electrical signal is delivered to the interventional element to promote adhesion of the thrombus to the interventional element. The electrical signal can optionally be a periodic waveform, and the total energy delivered can be between 0.75-24,000 mJ and the peak current delivered via the electrical signal can be between 0.5-5 mA.Type: GrantFiled: February 22, 2021Date of Patent: April 25, 2023Assignee: COVIDIEN LPInventors: Gaurav Girdhar, Hoai Nguyen, Andyanhdzung Huynh, Ashok Nageswaran, Christopher Andrews
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Publication number: 20230113257Abstract: Retrieval of material from vessel lumens can be improved by use of a distal element comprising an expandable mesh. a treatment device includes an elongated member having a proximal portion and a distal portion configured to be positioned within a blood vessel at a treatment site at or near a thrombus. A distal element comprising an expandable mesh is coupled to the distal portion of the elongated member via a connection assembly. In an expanded state, at least a portion of the mesh is configured to be in apposition with the blood vessel wall at the treatment site to anchor or stabilize the elongated member with respect to the blood vessel. The distal element can be electrically coupled to an extracorporeal current generator.Type: ApplicationFiled: November 7, 2022Publication date: April 13, 2023Inventors: Hoai Nguyen, Gaurav Girdhar, Andyanhdzung Huynh, Ujwal Jalgaonkar, Eric Mintz, Ashok Nageswaran, John Wainwright