Patents by Inventor Charlene X. Yuan

Charlene X. Yuan 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).

  • Publication number: 20230079760
    Abstract: A surgical device includes a substrate and a first coating that covers at least a portion of the substrate. The first coating includes a first polymer. The first coating having antibiotics dispersed in the first polymer such that the first polymer releases the antibiotics as the first polymer degrades. A second coating covers at least a portion of the first coating. The second coating includes a second polymer. The second coating has ellagic acid dispersed in the second polymer such that the second polymer releases the ellagic acid as the second polymer degrades. In some embodiments, systems and methods are disclosed.
    Type: Application
    Filed: September 13, 2021
    Publication date: March 16, 2023
    Applicant: MEDTRONIC INC.
    Inventors: JONATHAN T. GOODMAN, Sean Chen, Kasyap V. Seethamraju, Charlene X. Yuan, Raman V. Bahulekar
  • Publication number: 20230077402
    Abstract: A surgical device includes a substrate and a first coating that covers at least a portion of the substrate. The first coating includes a first polymer. The first coating having antibiotics dispersed in the first polymer such that the first polymer releases the antibiotics as the first polymer degrades. A second coating covers at least a portion of the first coating. The second coating includes a second polymer. The second polymer includes an alginate. The second coating has a hemostatic agent dispersed in the second polymer such that the second polymer releases the hemostatic agent as the second polymer degrades. The hemostatic agent is selected from epinephrine, tranexamic acid, chitosan and oxidized regenerated cellulose. In some embodiments, systems and methods are disclosed.
    Type: Application
    Filed: September 13, 2021
    Publication date: March 16, 2023
    Applicant: MEDTRONIC INC.
    Inventors: JONATHAN T. GOODMAN, Sean Chen, Kasyap V. Seethamraju, Charlene X. Yuan, Raman V. Bahulekar, Joseph L. Kalscheuer
  • Patent number: 9445990
    Abstract: A formulation for use in an implantable infusion device includes between about 5 mg/ml and about 500 mg/ml (e.g., about 10-25 mg/ml) of a TNF inhibitor polypeptide, 10 mM-25 mM of a phosphate or citrate buffer, has an ionic strength of the combined buffer and an optional salt of the equivalent of about 0.1-0.2 NaCl (e.g., about 0.15 M), 5% to 10% of a carbohydrate (e.g., trehalose or sucrose), has a pH of between 6 and 7, is fluid at room temperature and at 37° C., and has a viscosity of less than about 10 centipoise (e.g., between about 1 centipoise and 9 centipoise, between about 1 cp and about 5 cp, between about 1 cp and about 3 cp, or between about 1 cp and about 2.5 cp) at room temperature.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: September 20, 2016
    Assignee: Medtronic, Inc.
    Inventors: Deanna S. Lane, Charlene X. Yuan, Jianwei Li, Lanchi T. Le
  • Patent number: 9446234
    Abstract: The disclosure is directed to gastric stimulation programmers, stimulators and methods for controlling delivery of gastric stimulation therapy to maintain the efficacy of the therapy over time. Maintaining the efficacy of gastric stimulation therapy may be possible by implementing one or more anti-desensitization features in a gastric stimulation controller or stimulator. As electrical stimulation therapy is continuously delivered to a patient, the stimulated tissue may become desensitized to the electrical stimulation therapy such that the beneficial effect of the electrical stimulation is diminished. Once desensitization occurs, the affected tissue may not respond favorably to electrical stimulation therapy. Application of one or more anti-desensitization features to control gastric stimulation therapy may reduce or prevent desensitization and effectively extend the efficacy of the therapy over time.
    Type: Grant
    Filed: September 24, 2008
    Date of Patent: September 20, 2016
    Assignee: Medtronic, Inc.
    Inventors: Warren L. Starkebaum, Charlene X. Yuan, Roland C. Maude-Griffin, Luiz Geraldo Pivotto
  • Publication number: 20120088713
    Abstract: A formulation for use in an implantable infusion device includes between about 5 mg/ml and about 500 mg/ml (e.g., about 10-25 mg/ml) of a TNF inhibitor polypeptide, 10 mM-25 mM of a phosphate or citrate buffer, has an ionic strength of the combined buffer and an optional salt of the equivalent of about 0.1-0.2 NaCl (e.g., about 0.15 M), 5% to 10% of a carbohydrate (e.g., trehalose or sucrose), has a pH of between 6 and 7, is fluid at room temperature and at 37° C., and has a viscosity of less than about 10 centipoise (e.g., between about 1 centipoise and 9 centipoise, between about 1 cp and about 5 cp, between about 1 cp and about 3 cp, or between about 1 cp and about 2.5 cp) at room temperature.
    Type: Application
    Filed: October 4, 2011
    Publication date: April 12, 2012
    Applicant: MEDTRONIC INC.
    Inventors: Deanna S. Lane, Charlene X. Yuan, Jianwei Li, Lanchi T. Le
  • Patent number: 8124025
    Abstract: Articles for testing a coagulation process in whole blood.
    Type: Grant
    Filed: September 13, 2006
    Date of Patent: February 28, 2012
    Assignee: Medtronic, Inc.
    Inventors: Jyotsna Ghai, Charlene X. Yuan, Wei Qin, Mark A. Thompson
  • Patent number: 7983755
    Abstract: The disclosure is directed to gastric stimulation programmers, stimulators and methods for controlling delivery of gastric stimulation therapy to maintain the efficacy of the therapy over time. Maintaining the efficacy of gastric stimulation therapy may be possible by implementing one or more anti-desensitization features in a gastric stimulation controller or stimulator. As electrical stimulation therapy is continuously delivered to a patient, the stimulated tissue may become desensitized to the electrical stimulation therapy such that the beneficial effect of the electrical stimulation is diminished. Once desensitization occurs, the affected tissue may not respond favorably to electrical stimulation therapy. Application of one or more anti-desensitization features to control gastric stimulation therapy may reduce or prevent desensitization and effectively extend the efficacy of the therapy over time.
    Type: Grant
    Filed: September 24, 2008
    Date of Patent: July 19, 2011
    Assignee: Medtronic, Inc.
    Inventors: Warren L. Starkebaum, Charlene X. Yuan, Roland C. Maude-Griffin, Luiz Geraldo Pivotto
  • Patent number: 7957807
    Abstract: The disclosure is directed to gastric stimulation programmers, stimulators and methods for controlling delivery of gastric stimulation therapy to maintain the efficacy of the therapy over time. Maintaining the efficacy of gastric stimulation therapy may be possible by implementing one or more anti-desensitization features in a gastric stimulation controller or stimulator. As electrical stimulation therapy is continuously delivered to a patient, the stimulated tissue may become desensitized to the electrical stimulation therapy such that the beneficial effect of the electrical stimulation is diminished. Once desensitization occurs, the affected tissue may not respond favorably to electrical stimulation therapy. Application of one or more anti-desensitization features to control gastric stimulation therapy may reduce or prevent desensitization and effectively extend the efficacy of the therapy over time.
    Type: Grant
    Filed: September 24, 2008
    Date of Patent: June 7, 2011
    Assignee: Medtronic, Inc.
    Inventors: Warren L. Starkebaum, Charlene X. Yuan, Roland C. Maude-Griffin, Luiz Geraldo Pivotto
  • Publication number: 20090088818
    Abstract: The disclosure is directed to gastric stimulation programmers, stimulators and methods for controlling delivery of gastric stimulation therapy to maintain the efficacy of the therapy over time. Maintaining the efficacy of gastric stimulation therapy may be possible by implementing one or more anti-desensitization features in a gastric stimulation controller or stimulator. As electrical stimulation therapy is continuously delivered to a patient, the stimulated tissue may become desensitized to the electrical stimulation therapy such that the beneficial effect of the electrical stimulation is diminished. Once desensitization occurs, the affected tissue may not respond favorably to electrical stimulation therapy. Application of one or more anti-desensitization features to control gastric stimulation therapy may reduce or prevent desensitization and effectively extend the efficacy of the therapy over time.
    Type: Application
    Filed: September 24, 2008
    Publication date: April 2, 2009
    Inventors: Warren L. Starkebaum, Charlene X. Yuan, Roland C. Maude-Griffin, Luiz Geraldo Pivotto
  • Publication number: 20090088817
    Abstract: The disclosure is directed to gastric stimulation programmers, stimulators and methods for controlling delivery of gastric stimulation therapy to maintain the efficacy of the therapy over time. Maintaining the efficacy of gastric stimulation therapy may be possible by implementing one or more anti-desensitization features in a gastric stimulation controller or stimulator. As electrical stimulation therapy is continuously delivered to a patient, the stimulated tissue may become desensitized to the electrical stimulation therapy such that the beneficial effect of the electrical stimulation is diminished. Once desensitization occurs, the affected tissue may not respond favorably to electrical stimulation therapy. Application of one or more anti-desensitization features to control gastric stimulation therapy may reduce or prevent desensitization and effectively extend the efficacy of the therapy over time.
    Type: Application
    Filed: September 24, 2008
    Publication date: April 2, 2009
    Applicant: Medtronic, Inc.
    Inventors: Warren L. Starkebaum, Charlene X. Yuan, Roland C. Maude-Griffin, Luiz Geraldo Pivotto
  • Publication number: 20090088819
    Abstract: The disclosure is directed to gastric stimulation programmers, stimulators and methods for controlling delivery of gastric stimulation therapy to maintain the efficacy of the therapy over time. Maintaining the efficacy of gastric stimulation therapy may be possible by implementing one or more anti-desensitization features in a gastric stimulation controller or stimulator. As electrical stimulation therapy is continuously delivered to a patient, the stimulated tissue may become desensitized to the electrical stimulation therapy such that the beneficial effect of the electrical stimulation is diminished. Once desensitization occurs, the affected tissue may not respond favorably to electrical stimulation therapy.
    Type: Application
    Filed: September 24, 2008
    Publication date: April 2, 2009
    Applicant: Medtronic, Inc.
    Inventors: Warren L. Starkebaum, Charlene X. Yuan, Roland C. Maude-Griffin, Luiz Geraldo Pivotto
  • Patent number: 7247488
    Abstract: A method and kit for testing a multi-channel blood-testing cartridge. In particular, blood-testing cartridges are tested with plasma samples with clotting times measured to indicate whether a batch of cartridges is suitable for testing the blood of a patient.
    Type: Grant
    Filed: May 6, 2003
    Date of Patent: July 24, 2007
    Assignee: Medtronic, Inc.
    Inventors: Jyotsna Ghai, Mark A. Thompson, Colleen Lutz, Narayanan Ramamurthy, Charlene X. Yuan
  • Publication number: 20040224416
    Abstract: A method and kit for testing a multi-channel blood-testing cartridge. In particular, blood-testing cartridges are tested with plasma samples with clotting times measured to indicate whether a batch of cartridges is suitable for testing the blood of a patient.
    Type: Application
    Filed: May 6, 2003
    Publication date: November 11, 2004
    Inventors: Jyotsna Ghai, Mark A. Thompson, Colleen Lutz, Narayanan A. Ramamurthy, Charlene X. Yuan