Patents by Inventor Andyanhdzung Huynh
Andyanhdzung Huynh 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).
-
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
-
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
-
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
-
Publication number: 20240066289Abstract: In some examples, an endovascular medical device includes an elongated body configured to be introduced in a cranial blood vessel of a patient and an expandable element on the elongated body. The expandable element includes a plurality of loops, wherein each loop includes one or more electrodes. The expandable element is configured to expand radially outwards from a relatively low-profile delivery configuration to a deployed configuration to position the one or more electrodes to deliver electrical stimulation to tissue of a brain of a patient or sense a patient parameter from a location within the cranial blood vessel.Type: ApplicationFiled: August 23, 2023Publication date: February 29, 2024Inventors: Kevin V. Nguyen, Mark P. Ashby, Varun Umesh Kashyap, Andyanhdzung Huynh, Scott R. Stanslaski
-
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
-
Publication number: 20230373040Abstract: 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: June 14, 2023Publication date: November 23, 2023Inventors: Kevin V. Nguyen, Junwei Li, Andyanhdzung Huynh
-
Publication number: 20230329733Abstract: Systems and methods for removal of clot material from vessel lumens are disclosed. A medical device assembly can include a catheter having a lumen and a distal portion configured to be positioned at or adjacent a treatment site within a vessel. An expandable member has a first portion coupled to the distal portion of the catheter, and a second portion extending away from the catheter distal portion. An elongate shaft extends through the lumen of the catheter, and the second portion of the expandable member is releasably coupled to the shaft. When the shaft is slidably moved relative to the surrounding catheter, the second portion of the expandable member can be released from the shaft, and the shaft can be withdrawn or removed.Type: ApplicationFiled: June 22, 2023Publication date: October 19, 2023Inventors: Kevin V. Nguyen, Andyanhdzung Huynh
-
Publication number: 20230311254Abstract: Occlusive devices and associated methods of manufacturing are disclosed herein. Manufacturing an occlusive device can include conforming a mesh to a forming assembly and setting a shape of the mesh based on the forming assembly. In some embodiments, the forming assembly comprises multiple forming members, a mandrel, and/or one or more coupling elements. The method may include everting the mesh over the forming assembly such that the mesh encloses an open volume with a shape based, at least in part, on the shape of the forming assembly. According to some embodiments, setting a shape of the mesh comprises heat-treating the mesh and forming assembly.Type: ApplicationFiled: May 8, 2023Publication date: October 5, 2023Inventors: Kevin Nguyen, Junwei Li, Andyanhdzung Huynh
-
Patent number: 11730500Abstract: Systems and methods for removal of clot material from vessel lumens are disclosed. A medical device assembly can include a catheter having a lumen and a distal portion configured to be positioned at or adjacent a treatment site within a vessel. An expandable member has a first portion coupled to the distal portion of the catheter, and a second portion extending away from the catheter distal portion. An elongate shaft extends through the lumen of the catheter, and the second portion of the expandable member is releasably coupled to the shaft. When the shaft is slidably moved relative to the surrounding catheter, the second portion of the expandable member can be released from the shaft, and the shaft can be withdrawn or removed.Type: GrantFiled: February 24, 2021Date of Patent: August 22, 2023Inventors: Hoai Nguyen, Andyanhdzung Huynh
-
Patent number: 11717924Abstract: 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: August 8, 2023Assignee: Covidien LPInventors: Hoai Nguyen, Junwei Li, Andyanhdzung Huynh
-
Publication number: 20230210540Abstract: Systems, methods, and devices for treating vascular defects are disclosed herein. In some embodiments, a method of treating an aneurysm includes positioning a distal portion of an elongated member near or within an aneurysm. The method can include introducing an embolic composition into a lumen of the elongated member using an injector device coupled to a proximal portion of the elongated member. The injector device can pressurize the embolic composition to a pressure of at least 10,000 psi. The method can also include delivering the embolic composition into the aneurysm via the elongated member.Type: ApplicationFiled: December 29, 2022Publication date: July 6, 2023Inventors: Adin Douglas Martineau, Ali M. Hussain, John I. Muri, Junwei Li, Jared Akira Shimizu, Andyanhdzung Huynh, Robert A. Pecor, Aarya Cyril Mecwan
-
Patent number: 11679458Abstract: Occlusive devices and associated methods of manufacturing are disclosed herein. Manufacturing an occlusive device can include conforming a mesh to a forming assembly and setting a shape of the mesh based on the forming assembly. In some embodiments, the forming assembly comprises multiple forming members, a mandrel, and/or one or more coupling elements. The method may include everting the mesh over the forming assembly such that the mesh encloses an open volume with a shape based, at least in part, on the shape of the forming assembly. According to some embodiments, setting a shape of the mesh comprises heat-treating the mesh and forming assembly.Type: GrantFiled: November 3, 2020Date of Patent: June 20, 2023Assignee: COVIDIEN LPInventors: Hoai Nguyen, Junwei Li, Andyanhdzung Huynh
-
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
-
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
-
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
-
Publication number: 20230023511Abstract: Treatment of aneurysms can be improved by delivering an occlusive member (e.g., an expandable braid) to an aneurysm sac in conjunction with an embolic element (e.g., coils, embolic material). A treatment system for such treatment can include an electrolytically corrodible conduit having a proximal portion, a distal portion, and a detachment zone between the proximal portion and the distal portion. An occlusive member having a proximal hub is coupled to the conduit distal portion. The conduit has a lumen configured to pass an embolic element therethrough.Type: ApplicationFiled: October 5, 2022Publication date: January 26, 2023Inventors: Hoai Nguyen, Junwei Li, Andyanhdzung Huynh
-
Patent number: 11541490Abstract: Treatment of aneurysms can be improved by use of a treatment system including a conduit have a distal portion, a coupler slidably coupled to the distal portion, an occlusive member coupled to the coupler, and a securing member coupled to the conduit proximal to the coupler. The securing member can include a distal end portion that is removably coupled to the coupler. In some embodiments, the securing member can have a shape and/or be treated such that the securing member self-expands to decouple itself from the coupler during deployment of the occlusive member. In some embodiments, movement of the conduit relative to the coupler causes the securing member to decouple from the coupler.Type: GrantFiled: November 3, 2020Date of Patent: January 3, 2023Assignee: COVIDIEN LPInventors: Ashok Nageswaran, Junwei Li, Hoai Nguyen, Andyanhdzung Huynh
-
Patent number: 11523838Abstract: 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: GrantFiled: June 12, 2019Date of Patent: December 13, 2022Assignee: COVIDIEN LPInventors: Hoai Nguyen, Gaurav Girdhar, Andyanhdzung Huynh, Ujwal Jalgaonkar, Eric Mintz, Ashok Nageswaran, John Wainwright
-
Patent number: 11504816Abstract: Treatment of aneurysms can be improved by delivering an occlusive member (e.g., an expandable braid) to an aneurysm sac in conjunction with an embolic element (e.g., coils, embolic material). A treatment system for such treatment can include an electrolytically corrodible conduit having a proximal portion, a distal portion, and a detachment zone between the proximal portion and the distal portion. An occlusive member having a proximal hub is coupled to the conduit distal portion. The conduit has a lumen configured to pass an embolic element therethrough.Type: GrantFiled: November 3, 2020Date of Patent: November 22, 2022Assignee: COVIDIEN LPInventors: Hoai Nguyen, Junwei Li, Andyanhdzung Huynh
-
Publication number: 20220280172Abstract: 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: ApplicationFiled: March 2, 2021Publication date: September 8, 2022Inventors: Gaurav Girdhar, Hoai Nguyen, Andyanhdzung Huynh