Patents by Inventor Kjell Helen

Kjell Helen 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).

  • Medical implant
    Patent number: 6553260
    Abstract: A medical implant such as a heart stimulator has a detector which detects an extracorporeally generated interrogation signal for at least one predetermined working parameter of the medical implant. The interrogation signal is generated by an interrogation signal device capable of only unidirectional communication to the medical implant. The implant includes a response signal generator which generates an extracorporeal detectable response signal, detectable, for example, by a stethoscope, which indicates only if the interrogated working parameter has a satisfactory value or a non-satisfactory value.
    Type: Grant
    Filed: June 1, 2000
    Date of Patent: April 22, 2003
    Assignee: Pacesetter AB
    Inventors: Niklas Sköldengen, Jan Lindberg, Hans Abrahamsson, Kjell Helen, Tryggve Hemmingsson