Patents by Inventor Alan Shi
Alan Shi 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: 20240108905Abstract: A leadless neurostimulation device including a header unit having at least one primary electrode having a contact surface that defines an external surface on a side of the device, an outer housing that forms a side of the header unit opposite of the contact surface of the primary electrode, and a dielectric mount that receives at least a portion of the primary electrode and at least partially surrounds the primary electrode, the dielectric mount being configured to electrically insulate the primary electrode from the outer housing, the dielectric mount being received and fixed within a recessed portion of the outer housing, and a housing having a secondary electrode positioned on the same side of the leadless neurostimulation device as the primary electrode, the primary electrode and the secondary electrode being configured to transmit an electrical stimulation signal therebetween to provide electrical stimulation therapy to a tibial nerve of a patient.Type: ApplicationFiled: December 14, 2023Publication date: April 4, 2024Inventors: Steven Deininger, Alan Shi, Thomas M. Hillebrand
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Patent number: 11878179Abstract: A leadless neurostimulation device including a header unit having at least one primary electrode having a contact surface that defines an external surface on a side of the device, an outer housing that forms a side of the header unit opposite of the contact surface of the primary electrode, and a dielectric mount that receives at least a portion of the primary electrode and at least partially surrounds the primary electrode, the dielectric mount being configured to electrically insulate the primary electrode from the outer housing, the dielectric mount being received and fixed within a recessed portion of the outer housing, and a housing having a secondary electrode positioned on the same side of the leadless neurostimulation device as the primary electrode, the primary electrode and the secondary electrode being configured to transmit an electrical stimulation signal therebetween to provide electrical stimulation therapy to a tibial nerve of a patient.Type: GrantFiled: September 24, 2021Date of Patent: January 23, 2024Assignee: Medtronic, Inc.Inventors: Steven Deininger, Alan Shi, Thomas M. Hillebrand
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Patent number: 11724110Abstract: A stimulation therapy system dynamically modifies therapy intensity based on measured neurotransmitter levels. In some examples, the system delivers, via an electrode implanted in a brain of a patient and stimulation circuitry, an electrical stimulus; monitors an electrical current generated by the stimulation circuitry to deliver the electrical stimulus; determines, based on the electrical current, a value representative of a concentration of dopamine in the brain of the patient; determines, based on the value representative of the concentration of dopamine, a value for one or more stimulation parameters that at least partially define electrical stimulation therapy; and delivers, via the electrode, the electrical stimulation therapy.Type: GrantFiled: September 29, 2020Date of Patent: August 15, 2023Assignee: Medtronic, Inc.Inventors: Jadin C. Jackson, Alan Shi
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Patent number: 11633603Abstract: A system provides a burr hole cap assembly configured to secure a position of a lead implanted through a burr hole in a cranium of a patient. One or more electrodes are coupled to one or more components of the burr hole cap assembly. The one or more electrode is disposed within the burr hole cap assembly for sensing signals within a brain of the patient or stimulating a portion of the brain of the patient.Type: GrantFiled: December 29, 2020Date of Patent: April 25, 2023Assignee: MEDTRONIC, INC.Inventors: Erik J. Peterson, Scott R. Stanslaski, Alan Shi
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Publication number: 20230101016Abstract: Embodiments in accordance with the present disclosure are directed to an apparatus comprising an intra-body electrode, and a poly(3,4-ethylenedioxythiophene) (PEDOT)-based coating. The PEDOT-based coating is on a surface of the intra-body electrode. And, the PEDOT-based coating includes a PEDOT-backbone doped with counter ions and cross-linked to a photoreactive polymer and a photoreactive-hydrophilic polymer.Type: ApplicationFiled: September 8, 2022Publication date: March 30, 2023Applicant: MEDTRONIC, INC.Inventor: Alan Shi
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Publication number: 20220379121Abstract: In some examples, the disclosure relates to a medical device such as an implantable medical lead. The medical lead may include: a lead body including an electrically conductive lead wire; an electrical contact on a proximal portion of the lead body, the electrical contact including a contact substrate; and an electrode on a distal portion of the lead body, the electrode including an electrode substrate, wherein the electrode substrate is electrically coupled to the contact substrate via the electrically conductive lead wire, wherein the lead wire is formed of a composition comprising titanium or titanium alloys, wherein the electrode substrate is formed of a first beta-titanium alloy, and wherein the contact substrate is formed of a second beta-titanium alloy.Type: ApplicationFiled: May 16, 2022Publication date: December 1, 2022Inventors: Bernard Q. Li, Richard T. Stone, Alan Shi, Seth M. Humphrys, Wen Tan, Nicholas D. Stepka
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Publication number: 20220096842Abstract: A stimulation therapy system dynamically modifies therapy intensity based on measured neurotransmitter levels. In some examples, the system delivers, via an electrode implanted in a brain of a patient and stimulation circuitry, an electrical stimulus; monitors an electrical current generated by the stimulation circuitry to deliver the electrical stimulus; determines, based on the electrical current, a value representative of a concentration of dopamine in the brain of the patient; determines, based on the value representative of the concentration of dopamine, a value for one or more stimulation parameters that at least partially define electrical stimulation therapy; and delivers, via the electrode, the electrical stimulation therapy.Type: ApplicationFiled: September 29, 2020Publication date: March 31, 2022Inventors: Jadin C. Jackson, Alan Shi
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Publication number: 20220096845Abstract: A leadless neurostimulation device including a header unit having at least one primary electrode having a contact surface that defines an external surface on a side of the device, an outer housing that forms a side of the header unit opposite of the contact surface of the primary electrode, and a dielectric mount that receives at least a portion of the primary electrode and at least partially surrounds the primary electrode, the dielectric mount being configured to electrically insulate the primary electrode from the outer housing, the dielectric mount being received and fixed within a recessed portion of the outer housing, and a housing having a secondary electrode positioned on the same side of the leadless neurostimulation device as the primary electrode, the primary electrode and the secondary electrode being configured to transmit an electrical stimulation signal therebetween to provide electrical stimulation therapy to a tibial nerve of a patient.Type: ApplicationFiled: September 24, 2021Publication date: March 31, 2022Inventors: Steven Deininger, Alan Shi, Thomas M. Hillebrand
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Publication number: 20210205623Abstract: A system provides a burr hole cap assembly configured to secure a position of a lead implanted through a burr hole in a cranium of a patient. One or more electrodes are coupled to one or more components of the burr hole cap assembly. The one or more electrode is disposed within the burr hole cap assembly for sensing signals within a brain of the patient or stimulating a portion of the brain of the patient.Type: ApplicationFiled: December 29, 2020Publication date: July 8, 2021Inventors: Erik J. Peterson, Scott R. Stanslaski, Alan Shi
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Publication number: 20200155827Abstract: A method of forming a medical device contact element includes annealing an elongated rod of Ti-15Mo alloy material to form an annealed rod having a Young's Modulus of less than 13.5 Mpsi and an elastic range or strain of at least 0.7%. Then forming a contact ring element from the annealed rod and assembling the contact ring element into a medical device. Contact rings and lead receptacles including the same are also described.Type: ApplicationFiled: January 23, 2020Publication date: May 21, 2020Inventors: Bernard Q. Li, Alan Shi, Daniel S. Sorensen, Darren A. Janzig, Margaret Bush
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Patent number: 10576266Abstract: A method of forming a medical device contact element includes annealing an elongated rod of Ti-15Mo alloy material to form an annealed rod having a Young's Modulus of less than 13.5 Mpsi and an elastic range or strain of at least 0.7%. Then forming a contact ring element from the annealed rod and assembling the contact ring element into a medical device. Contact rings and lead receptacles including the same are also described.Type: GrantFiled: May 31, 2017Date of Patent: March 3, 2020Assignee: Medtronic, Inc.Inventors: Bernard Q. Li, Alan Shi, Daniel D. Sorensen, Darren A. Janzig, Margaret Bush
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Patent number: 10493265Abstract: In some examples, the disclosure relates to a medical device comprising a lead including an electrically conductive lead wire; and an electrode electrically coupled to the lead wire, the electrode including a first portion and a second portion, wherein the first portion defines an exposed outer surface of the electrode and is electrically coupled to the second portion along a first interface, wherein the second portion is electrically coupled to the lead wire along a second interface different from the first interface via welding to couple the lead wire to the electrode, wherein an electrical signal may be transferred between the lead wire and exposed outer surface of the first portion via the second portion, and wherein the first portion is formed from a first material having a first composition, and the second portion is formed from a second material having a second composition different from the first composition.Type: GrantFiled: March 13, 2014Date of Patent: December 3, 2019Assignee: Medtronic, Inc.Inventors: Xingfu Chen, Bernard Q. Li, Richard T. Stone, Dale F. Seeley, Alan Shi
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Patent number: 10406349Abstract: In some examples, the disclosure relates to a medical device comprising a lead including an electrically conductive lead wire; and an electrode electrically coupled to the lead wire, the electrode including a substrate and a coating on an outer surface of the substrate, wherein the lead wire is formed of a composition comprising titanium or titanium alloys, wherein the substrate is formed of a composition comprising one or more of titanium, tantalum, niobium, and alloys thereof, wherein the coating comprises at least one of Pt, TiN, IrOx, and poly(dioctyl-bithiophene) (PDOT). In some examples, the lead wire may be coupled to the lead wire via a weld, such as, e.g., a laser weld.Type: GrantFiled: March 12, 2014Date of Patent: September 10, 2019Assignee: Medtronic, Inc.Inventors: Alan Shi, Darren A. Janzig, Bernard Q. Li, Richard T. Stone, Dale F. Seeley, Peng Cong
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Publication number: 20170259055Abstract: A method of forming a medical device contact element includes annealing an elongated rod of Ti-15Mo alloy material to form an annealed rod having a Young's Modulus of less than 13.5 Mpsi and an elastic range or strain of at least 0.7%. Then forming a contact ring element from the annealed rod and assembling the contact ring element into a medical device. Contact rings and lead receptacles including the same are also described.Type: ApplicationFiled: May 31, 2017Publication date: September 14, 2017Inventors: Bernard Q. Li, Alan Shi, Daniel D. Sorensen, Darren A. Janzig, Margaret Bush
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Patent number: 9694173Abstract: A method of forming a medical device contact element includes annealing an elongated rod of Ti-15Mo alloy material to form an annealed rod having a Young's Modulus of less than 13.5 Mpsi and an elastic range or strain of at least 0.7%. Then forming a contact ring element from the annealed rod and assembling the contact ring element into a medical device. Contact rings and lead receptacles including the same are also described.Type: GrantFiled: March 6, 2015Date of Patent: July 4, 2017Assignee: MEDTRONIC, INC.Inventors: Bernard Q. Li, Alan Shi, Daniel D. Sorensen, Darren A. Janzig, Margaret Bush
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Process and material solution to reduce metal ion release for implantable medical device application
Patent number: 9284648Abstract: The invention describes a method and compositions where the presence of cobalt and or nickel have been depleted from the surface layer(s) of a cobalt, chromium, nickel containing alloy.Type: GrantFiled: April 16, 2012Date of Patent: March 15, 2016Assignee: Medtronic, Inc.Inventors: Alan Shi, Bernard Li -
Patent number: 9238093Abstract: The invention describes a process to remove a recast layer and/or burrs from machining processes to provide a surface of a titanium medical device without dissipation of copper or zinc from the surface of the medical device.Type: GrantFiled: November 21, 2011Date of Patent: January 19, 2016Assignee: Medtronic, IncInventors: Alan Shi, Bernard Q. Li, Daniel D. Sorensen, Darren A. Janzig
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Publication number: 20150250997Abstract: A method of forming a medical device contact element includes annealing an elongated rod of Ti-15Mo alloy material to form an annealed rod having a Young's Modulus of less than 13.5 Mpsi and an elastic range or strain of at least 0.7%. Then forming a contact ring element from the annealed rod and assembling the contact ring element into a medical device. Contact rings and lead receptacles including the same are also described.Type: ApplicationFiled: March 6, 2015Publication date: September 10, 2015Inventors: Bernard Q. Li, Alan Shi, Daniel D. Sorensen, Darren A. Janzig, Margaret Bush
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Publication number: 20140343644Abstract: In some examples, the disclosure relates to a medical device comprising a lead including an electrically conductive lead wire; and an electrode electrically coupled to the lead wire, the electrode including a substrate and a coating on an outer surface of the substrate, wherein the lead wire is formed of a composition comprising titanium or titanium alloys, wherein the substrate is formed of a composition comprising one or more of titanium, tantalum, niobium, and alloys thereof, wherein the coating comprises at least one of Pt, TiN, IrOx, and poly(dioctyl-bithiophene) (PDOT). In some examples, the lead wire may be coupled to the lead wire via a weld, such as, e.g., a laser weld.Type: ApplicationFiled: March 12, 2014Publication date: November 20, 2014Applicant: Medtronic, Inc.Inventors: Alan Shi, Darren A. Janzig, Bernard Q. Li, Richard T. Stone, Dale F. Seeley, Peng Cong
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Publication number: 20140277316Abstract: In some examples, the disclosure relates to a medical device comprising a lead including an electrically conductive lead wire; and an electrode electrically coupled to the lead wire, the electrode including a first portion and a second portion, wherein the first portion defines an exposed outer surface of the electrode and is electrically coupled to the second portion along a first interface, wherein the second portion is electrically coupled to the lead wire along a second interface different from the first interface via welding to couple the lead wire to the electrode, wherein an electrical signal may be transferred between the lead wire and exposed outer surface of the first portion via the second portion, and wherein the first portion is formed from a first material having a first composition, and the second portion is formed from a second material having a second composition different from the first composition.Type: ApplicationFiled: March 13, 2014Publication date: September 18, 2014Applicant: Medtronic, Inc.Inventors: Xingfu Chen, Bernard Q. Li, Richard T. Stone, Dale F. Seeley, Alan Shi