Patents by Inventor Martin Graefe

Martin Graefe 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: 9737658
    Abstract: The invention relates to a stopper arrangement for a drug delivery device, comprising a stopper, a linear actor coupled with one end to the stopper and with an opposite end to a coupling arrangement, wherein the stopper arrangement is configured to be disposed within a container of a drug delivery device, wherein a shape and/or material of the stopper and the coupling arrangement are configured such that a first frictional force between the coupling arrangement and the container is lower than a frictional force between the stopper and the container when the linear actor is contracting and that second frictional force between the coupling arrangement and the container is greater than the frictional force between the stopper and the container when the linear actor is expanding.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: August 22, 2017
    Assignee: SANOFI-AVENTIS DEUTSCHLAND GMBH
    Inventors: Thomas Nagel, Rene Richter, Robert Witt, Richard Guenther, Martin Graefe
  • Patent number: 9364614
    Abstract: The invention relates to a drug delivery device, comprising: a case for retaining drug container, the drug container defining a cavity for containing a drug, wherein a stopper is slidably disposed within the container so as to displace the drug through a discharge nozzle on translation in a distal direction, an inner magnet disposable within the drug container for abutting the stopper, at least one outer magnet disposed within the case coaxially with the container and slidable in an axial direction, a trigger arrangement for advancing the outer magnet in a distal direction on actuation, wherein the outer magnet and inner magnet are arranged for magnetically interacting through the drug container wall such the outer magnet advances the inner magnet on trigger actuation.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: June 14, 2016
    Assignee: SANOFI-AVENTIS DEUTSCHLAND GMBH
    Inventors: Thomas Nagel, Rene Richter, Robert Witt, Richard Guenther, Martin Graefe
  • Publication number: 20150148745
    Abstract: The invention relates to a stopper arrangement for a drug delivery device, comprising a stopper, a linear actor coupled with one end to the stopper and with an opposite end to a coupling arrangement, wherein the stopper arrangement is configured to be disposed within a container of a drug delivery device, wherein a shape and/or material of the stopper and the coupling arrangement are configured such that a first frictional force between the coupling arrangement and the container is lower than a frictional force between the stopper and the container when the linear actor is contracting and that second frictional force between the coupling arrangement and the container is greater than the frictional force between the stopper and the container when the linear actor is expanding.
    Type: Application
    Filed: June 25, 2013
    Publication date: May 28, 2015
    Inventors: Thomas Nagel, Rene Richter, Robert Witt, Richard Guenther, Martin Graefe
  • Publication number: 20150126940
    Abstract: The invention relates to a drug delivery device, comprising: a case for retaining drug container, the drug container defining a cavity for containing a drug, wherein a stopper is slidably disposed within the container so as to displace the drug through a discharge nozzle on translation in a distal direction, an inner magnet disposable within the drug container for abutting the stopper, at least one outer magnet disposed within the case coaxially with the container and slidable in an axial direction, a trigger arrangement for advancing the outer magnet in a distal direction on actuation, wherein the outer magnet and inner magnet are arranged for magnetically interacting through the drug container wall such the outer magnet advances the inner magnet on trigger actuation.
    Type: Application
    Filed: June 25, 2013
    Publication date: May 7, 2015
    Inventors: Thomas Nagel, Rene Richter, Robert Witt, Richard Guenther, Martin Graefe