Patents by Inventor Charles R. Ritchey

Charles R. Ritchey 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: 11974787
    Abstract: Variable angle holes in bone plates structured to facilitate the formation of axial compression or tension of a bone, or which can assist in bone distraction. The variable angle hole can extend about a central axis and includes an inwardly extending wedge wall. The variable angle hole can be sized to receive insertion of a fixation element at a location at which a central longitudinal axis of the fixation element is axially offset from the central axis of the variable angle hole by an offset distance at least when the fixation element is initially driven into bone at least in a transverse direction. The wedge wall can be configured to be engaged by a portion of the fixation element in a manner that axially displaces at least one of the bone plate, the fixation element, and/or bone(s) in a direction that can generally reduce or increase the offset distance.
    Type: Grant
    Filed: November 23, 2022
    Date of Patent: May 7, 2024
    Assignee: Smith & Nephew, Inc.
    Inventors: Gabriel E. Rapalo, Timothy J. Petteys, Nicholas S. Ritchey, Charles R. Bennett
  • Publication number: 20240090931
    Abstract: A collinear reduction clamp including a compression rod, an arm, and an advancing mechanism for moving the compression rod relative to the arm. In some examples, the rod may include a cannulated bore to enable a bone screw to be inserted therein. The rod may also include a cap. The cap including a bone screw washer. In use, a bone screw can be inserted through the cannulated bore of the rod, the bone screw passing through the washer thereby coupling the washer to the bone screw thereby enabling both the bone screw and the washer to be inserted into the patient's bone directly at the compression site. In some examples, the cannulated bore may be used in combination with first and second tubes and a guidewire to enable a cannulated bone screw to be inserted therein. In some examples, the arm may be configured as a length adjusting arm.
    Type: Application
    Filed: September 12, 2023
    Publication date: March 21, 2024
    Applicants: Smith & Nephew, Inc., Smith & Nephew Orthopaedics AG, Smith & Nephew Asia Pacific Pte. Limited
    Inventors: Gabriel E. Rapalo, Ramprasad Papannagari, Charles R. Bennett, Nicholas S. Ritchey
  • Patent number: 4393048
    Abstract: Water soluble hydrogels of alkali metal alginate and glycerine have been found to be excellent wound dressings. The gels dry to an adherent, non-toxic pliable protective film which can be removed by water-washing when desired. The gels are also compatible with medicaments and hence can serve as vehicles or carriers for medicament application to wounds as well as a protective cover.
    Type: Grant
    Filed: October 30, 1981
    Date of Patent: July 12, 1983
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Arthur D. Mason, Jr., Avery A. Johnson, Jr., Harrel L. Walker, Eleanor G. Bowler, Charles R. Ritchey
  • Patent number: 4391799
    Abstract: Water soluble hydrogels of alkali metal alginate and glycerin containing 0.01 to 1% cupric (copper) sulfate pentahydrate or silver salts such as silver acetate, silver lactate monohydrate and silver nitrate have been found to be excellent wound dressing treatment composition for white phosphorus burns.Cupric sulfate pentahydrate or silver salts such as silver acetate, silver lactate monohydrate and silver nitrate in the gel reacts with the particles of white phosphorus to form a coating around said particles thus rendering them unable to cause further burn injury to the skin. The gels dry to an adherent, non-toxic pliable protective film which can be removed by water-washing when desired. The gels are also compatible with other medicaments and hence can serve as vehicles or carriers for medicament application to wounds as well as a protective cover.
    Type: Grant
    Filed: October 30, 1981
    Date of Patent: July 5, 1983
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Arthur D. Mason, Jr., Avery A. Johnson, Jr., Charles R. Ritchey