Patents by Inventor Anna-Karin Johansson
Anna-Karin Johansson 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: 9295833Abstract: An implantable lead for sensing mechanical activity of a human heart has an insulating polymeric tube extending from a proximal end to a distal end of the lead, an electrical conductor provided in the lumen of the polymeric tube, and a sensor connected to the conductor at the distal end thereof. The polymeric tube is provided with a conductive surface layer along the inner face between the polymeric tube and the electrical conductor, the conductive surface layer being in electrical contact with this conductor. Accumulation of electrical charges between the electric conductor and the polymeric tube is thereby prevented.Type: GrantFiled: May 31, 2005Date of Patent: March 29, 2016Assignee: St. Jude Medical, ABInventors: Kenth Nilsson, Anna-Karin Johansson, Tom Eriksson
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Patent number: 8372469Abstract: A method for producing a biocompatible material of the formula NaxKyNbO3, 0?x?0.8, 0.2?y?1, x+y=1 includes the steps of a) providing a Na-precursor and a K-precursor for NaxKyNbO3, b) mixing the precursors in solution wherein said precursors first react to form a sol and thereafter a gel, c) heat treating the gel to obtain an oxide of the material NaxKyNbO3, 0?x?0.8, 0.2?y?1, x+y=1. The material can be produced as a film, and the material or film can be provided on the exterior surface of a medical implant that will come into contact with body tissue and/or body fluids upon implantation thereof.Type: GrantFiled: July 12, 2012Date of Patent: February 12, 2013Assignee: St. Jude Medical ABInventors: Tom Eriksson, Kenth Nilsson, Anna-Karin Johansson, Karin Lungstrom, Koroush Lashgari, Annika Pohl, Gunnar Westin
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Publication number: 20120289807Abstract: A method for producing a biocompatible material of the formula NaxKyNbO3, 0?x?0.8, 0.2?y?1, x+y=1 includes the steps of a) providing a Na-precursor and a K-precursor for NaxKyNbO3, b) mixing the precursors in solution wherein said precursors first react to form a sol and thereafter a gel, c) heat treating the gel to obtain an oxide of the material NaxKyNbO3, 0?x?0.8, 0.2?y?1, x+y=1. The material can be produced as a film, and the material or film can be provided on the exterior surface of a medical implant that will come into contact with body tissue and/or body fluids upon implantation thereof.Type: ApplicationFiled: July 12, 2012Publication date: November 15, 2012Applicant: ST. JUDE MEDICAL ABInventors: Tom ERIKSSON, Kenth NILSSON, Anna-Karin JOHANSSON, Karin LUNGSTRÖM, Koroush LASHGARI, Annika POHL, Gunnar WESTIN
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Publication number: 20120282451Abstract: A method for producing a biocompatible material of the formula NaxKyNbO3, 0?x?0.8, 0.2?y?1, x+y=1 includes the steps of a) providing a Na-precursor and a K-precursor for NaxKyNbO3, b) mixing the precursors in solution wherein said precursors first react to form a sol and thereafter a gel, c) heat treating the gel to obtain an oxide of the material NaxKyNbO3, 0?x?0.8, 0.2?y?1, x+y=1. The material can be produced as a film, and the material or film can be provided on the exterior surface of a medical implant that will come into contact with body tissue and/or body fluids upon implantation thereof.Type: ApplicationFiled: July 12, 2012Publication date: November 8, 2012Applicant: ST. JUDE MEDICAL ABInventors: Tom ERIKSSON, Kenth NILSSON, Anna-Karin JOHANSSON, Karin LJUNGSTRÖM, Koroush LASHGARI, Annika POHL, Gunnar WESTIN
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Publication number: 20120276279Abstract: A method for producing a biocompatible material of the formula NaxKyNbO3, 0?x?0.8, 0.2?y?1, x+y=1 includes the steps of a) providing a Na-precursor and a K-precursor for NaxKyNbO3, b) mixing the precursors in solution wherein said precursors first react to form a sol and thereafter a gel, c) heat treating the gel to obtain an oxide of the material NaxKyNbO3, 0?x?0.8, 0.2?y?1, x+y=1. The material can be produced as a film, and the material or film can be provided on the exterior surface of a medical implant that will come into contact with body tissue and/or body fluids upon implantation thereof.Type: ApplicationFiled: July 12, 2012Publication date: November 1, 2012Applicant: ST. JUDE MEDICAL ABInventors: Tom Eriksson, Kenth Nilsson, Anna-Karin Johansson, Karin Lungstrom, Koroush Lashgari, Annika Pohl, Gunnar Westin
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Patent number: 8246929Abstract: A method for producing a biocompatible material of the formula NaxKyNbO3, 0?x?0.8, 0.2?y?1, x+y=1 includes the steps of a) providing a Na-precursor and a K-precursor for NaxKyNbO3, b) mixing the precursors in solution wherein said precursors first react to form a sol and thereafter a gel, c) heat treating the gel to obtain an oxide of the material NaxKyNbO3, 0?x?0.8, 0.2?y?1, x+y=1. The material can be produced as a film, and the material or film can be provided on the exterior surface of a medical implant that will come into contact with body tissue and/or body fluids upon implantation thereof.Type: GrantFiled: May 31, 2005Date of Patent: August 21, 2012Assignee: St. Jude Medical ABInventors: Tom Eriksson, Kenth Nilsson, Anna-Karin Johansson, Karin Ljungström, Koroush Lashgari, Annika Pohl, Gunnar Westin
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Patent number: 8224421Abstract: A cardiac stimulator has an implantable cardiac lead that carries a temperature sensitive element with a surface thereof in contact with biological matter. The temperature sensitive element emits a temperature signal corresponding to the temperature of biological matter, such as blood, in contact with the surface of the temperature sensitive element. Processing circuitry receives the temperature signal and determines a variability thereof within a selected time interval. A status signal is emitted dependent on this variability.Type: GrantFiled: January 31, 2006Date of Patent: July 17, 2012Assignee: St. Jude Medical ABInventors: Per Lagercrantz, Anna-Karin Johansson, Karin Järeverud
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Publication number: 20100185252Abstract: In a device and method for a medical implant for monitoring progression of heart failure in a human heart, an activity sensor provides information related to the activity level of a patient and an oxygen sensor provides information related to the level of oxygen content in venous blood. A determined level of venous oxygen content at a determined activity level is obtained, and that level of venous oxygen content is compared to stored values at a corresponding activity level. The result of the comparison is used as a basis for determining a degree of heart failure.Type: ApplicationFiled: September 27, 2007Publication date: July 22, 2010Inventors: Anders Björling, Malin Öhlander, Tom Eriksson, Johan Eckerdal, Urban Lönn, Kenth Nilsson, Cecilia Tuvstedt, Johan Svahn, Anna-Karin Johansson, Kjell Norén, Michael Broomé
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Publication number: 20090306735Abstract: A cardiac stimulator has an implantable cardiac lead that carries a temperature sensitive element with a surface thereof in contact with biological matter. The temperature sensitive element emits a temperature signal corresponding to the temperature of biological matter, such as blood, in contact with the surface of the temperature sensitive element. Processing circuitry receives the temperature signal and determines a variability thereof within a selected time interval. A status signal is emitted dependent on this variability.Type: ApplicationFiled: January 31, 2006Publication date: December 10, 2009Applicant: ST. JUDE MEDIAL ABInventors: Per Lagercrantz, Anna-Karin Johansson, Karin Järeverud
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Publication number: 20090177049Abstract: A method for producing a biocompatible material of the formula NaxKyNbO3, 0?x?0.8, 0.2?y?1, x+y=1 includes the steps of a) providing a Na-precursor and a K-precursor for NaxKyNbO3, b) mixing the precursors in solution wherein said precursors first react to form a sol and thereafter a gel, c) heat treating the gel to obtain an oxide of the material NaxKyNbO3, 0?x?0.8, 0.2?y?1, x+y=1. The material can be produced as a film, and the material or film can be provided on the exterior surface of a medical implant that will come into contact with body tissue and/or body fluids upon implantation thereof.Type: ApplicationFiled: May 31, 2005Publication date: July 9, 2009Inventors: Tom Eriksson, Kenth Nilsson, Anna-Karin Johansson, Karin Ljungstrom, Koroush Lashgari, Annika Pohl, Gunnar Westin
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Publication number: 20090125090Abstract: An implantable lead for sensing mechanical activity of a human heart has an insulating polymeric tube extending from a proximal end to a distal end of the lead, an electrical conductor provided in the lumen of the polymeric tube, and a sensor connected to the conductor at the distal end thereof. The polymeric tube is provided with a conductive surface layer along the inner face between the polymeric tube and the electrical conductor, the conductive surface layer being in electrical contact with this conductor. Accumulation of electrical charges between the electric conductor and the polymeric tube is thereby prevented.Type: ApplicationFiled: May 31, 2005Publication date: May 14, 2009Inventors: Kenth Nilsson, Anna-Karin Johansson, Tom Eriksson
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Publication number: 20080091239Abstract: In a cardiac assist device and method, a microphone is placed in contact with the epicardium of the heart of a patient, and heart and lung sounds are simultaneously detected at the placement location of the microphone. The heart and lung sounds are automatically analyzed to set an appropriate cardiac therapy for the patient.Type: ApplicationFiled: October 16, 2006Publication date: April 17, 2008Inventors: Anna-Karin Johansson, Kenth Nilsson, Cecilia Tuvstedt, Kjell Noren, Anders Bjorling, Andreas Blomqvist, Berit Larsson, Sven-Erik Hedberg, Karin Jarverud, Nils Holmstrom