Patents by Inventor Christoph Ranft

Christoph Ranft 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).

  • Finger joint prosthesis
    Patent number: 9138323
    Abstract: A finger joint prosthesis is provided including a joint body having first and second joint elements, which are connected together pivotably about a rotary axis and from each of which extends an anchoring bar for fixing to a proximal and/or distal phalanx. The anchoring bars have eyes with openings for receiving fixing screws. To increase stability, it is proposed that the first joint element have an external hollow body with an insertion opening, that the second joint element have an internal hollow body, and that the internal hollow body in the position of installation can be inserted by way of the insertion opening relatively movably into the external hollow body. A spindle can be inserted in the position of installation into the internal hollow body for rotationally movable connection to the external hollow body.
    Type: Grant
    Filed: February 21, 2008
    Date of Patent: September 22, 2015
    Assignee: Waldemar Link GmbH & Co. KG
    Inventors: Arnold Keller, Christoph Ranft
  • Instruments for carrying out an operating procedure on a joint
    Patent number: 8882778
    Abstract: The invention concerns instruments for carrying out an operating procedure on a finger joint, in which the damaged joint 4 is radially milled out by means of the instruments and is replaced by a hinge prosthesis 50.
    Type: Grant
    Filed: November 10, 2008
    Date of Patent: November 11, 2014
    Assignee: Waldemar Link GmbH & Co. KG
    Inventor: Christoph Ranft
  • Instruments for Carrying Out an Operating Procedure on a Joint
    Publication number: 20100274251
    Abstract: The invention concerns instruments for carrying out an operating procedure on a finger joint, in which the damaged joint 4 is radially milled out by means of the instruments and is replaced by a hinge prosthesis 50.
    Type: Application
    Filed: November 10, 2008
    Publication date: October 28, 2010
    Applicant: WALDEMAR LINK GMBH & CO. KG
    Inventor: Christoph Ranft
  • Finger Joint Prosthesis
    Publication number: 20100082112
    Abstract: A finger joint prosthesis is provided including a joint body having first and second joint elements, which are connected together pivotably about a rotary axis and from each of which extends an anchoring bar for fixing to a proximal and/or distal phalanx. The anchoring bars have eyes with openings for receiving fixing screws. To increase stability, it is proposed that the first joint element have an external hollow body with an insertion opening that the second joint element have an internal hollow body, and that the internal hollow body in the position of installation can be inserted by way of the insertion opening relatively movably into the external hollow body. A spindle can be inserted in the position of installation into the internal hollow body for rotationally movable connection to the external hollow body.
    Type: Application
    Filed: February 21, 2008
    Publication date: April 1, 2010
    Applicant: WALDEMAR LINK GMBH & CO. KG
    Inventors: Arnold Keller, Christoph Ranft