Patents by Inventor Hermann Groothoff

Hermann Groothoff 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: 4840186
    Abstract: An implantable lead has conductors wound in a multi-pole helix. The conductors are individually insulated by a first insulating material and the insulated conductors are embedded in, and axially separated from each other by a second tube-formed insulating material. The inner opening of the tube receives a helically wound stylet guide coil which may also be a multi-pole conductor arrangement. The conductors may be helically wound, multi-filament wires. Preferably, all helically wound arrangements in the lead are wound in the same direction so that the lead is still when rotating it in one direction and flexible when rotating it the other way.
    Type: Grant
    Filed: May 27, 1988
    Date of Patent: June 20, 1989
    Assignee: Siemens Aktiengesellschaft
    Inventors: Anders Lekholm, Ulf Fahlstroem, Hermann Groothoff