Patents by Inventor Douglas W. Van Citters

Douglas W. Van Citters 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: 11534558
    Abstract: A bilateral humeral guide for intraosseous infusion includes a three-dimensional mirror symmetric shell configured to fit on either shoulder of a patient, the shell being symmetric about a plane bisecting an alignment hole configured to aid positioning of the shell on the shoulder by aligning the alignment hole on acromion of the shoulder, and two insertion-site indication holes symmetrically positioned on two opposite sides of the plane, the insertion-site indication holes including a left and a right hole each configured to indicate insertion sites for intraosseous infusion through the shell to a target region of a left or right humerus of the patient when the shell is positioned on the shoulder corresponding to the respective humerus.
    Type: Grant
    Filed: July 17, 2020
    Date of Patent: December 27, 2022
    Assignee: THE TRUSTEES OF DARTMOUTH COLLEGE
    Inventors: Douglas W. Van Citters, Alexander H. Slocum, Jr., Steven D. Reinitz
  • Publication number: 20220257875
    Abstract: A bilateral humeral guide for intraosseous infusion includes a three-dimensional minor symmetric shell configured to fit on either shoulder of a patient, the shell being symmetric about a plane bisecting an alignment hole configured to aid positioning of the shell on the shoulder by aligning the alignment hole on acromion of the shoulder, and two insertion-site indication holes symmetrically positioned on two opposite sides of the plane, the insertion-site indication holes including a left and a right hole each configured to indicate insertion sites for intraosseous infusion through the shell to a target region of a left or right humerus of the patient when the shell is positioned on the shoulder corresponding to the respective humerus.
    Type: Application
    Filed: July 17, 2020
    Publication date: August 18, 2022
    Inventors: Douglas W. VAN CITTERS, Alexander H. SLOCUM, Steven D. REINITZ
  • Patent number: 11357546
    Abstract: Survival of patients suffering from many infections diarrheal diseases, including Ebola, as well as trauma and post-partum hemorrhage is improved with large-volume, parenteral, fluid replacement. In lieu of IVs, Intra-Osseous (IO) lines are placed with the help of a Humerus-Finder™, a one-piece guide that identifies the humeral head at the shoulder and allows for easy, safe, placement of an IO line. This guide enables healthcare providers and lay-providers to place IO lines and deliver fluids to infected persons without direct contact, limiting risk to providers. The Humerus-Finder™ makes early, potentially life-saving, supportive treatment available where large-volume fluid infusion can save lives and is useful in disaster medicine and emergency medicine when it is not possible to place an IV line rapidly and safely by helping first responders achieve IO access for delivery of fluid resuscitation in a safe, reliable manner.
    Type: Grant
    Filed: July 24, 2016
    Date of Patent: June 14, 2022
    Assignee: IOMETRY, INC.
    Inventors: Douglas W. Van Citters, Alexander H. Slocum, Jr., Steven D. Reinitz
  • Patent number: 11324518
    Abstract: A method of attaching prosthetic implants to bone, applicable to tibia, patella, acetabulum, glenoid, or femur, includes trimming an articular surface of the bone, leaving a trimmed surface. Holes are punched or drilled into the surface in a predetermined array before polymethyl methacrylate bone cement is used to attach the surface to the implant. In an embodiment, the holes are punched by placing a punch-plate with sharpened punch spikes on the surface, and striking the punch plate to drive punches into the trimmed surface. In another embodiment, holes are drilled using a drilling template with predrilled guidance holes placed on the surface of the bone. In another embodiment, holes are drilled by positioning a robotic drill over the trimmed surface; adjusting a drilling pattern of the robotic drill according to the trimmed surface; and using the robotic drill to drill holes of predetermined depth according to the drilling pattern.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: May 10, 2022
    Assignee: THE TRUSTEES OF DARTMOUTH COLLEGE
    Inventors: Douglas W. Van Citters, Bridget E. Shaia, Spencer H. Amundsen, James A. Yang
  • Patent number: 10829623
    Abstract: A high-strength conductive polymer composite can be made by mixing a a granular polymer and a conductive material, and processing the mixture using angular extrusion.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: November 10, 2020
    Inventors: Douglas W. Van Citters, Hayden H. Chun, David J. Cook, Eric S. Packer
  • Publication number: 20200046375
    Abstract: A method of attaching prosthetic implants to bone, applicable to tibia, patella, acetabulum, glenoid, or femur, includes trimming an articular surface of the bone, leaving a trimmed surface. Holes are punched or drilled into the surface in a predetermined array before polymethyl methacrylate bone cement is used to attach the surface to the implant. In an embodiment, the holes are punched by placing a punch-plate with sharpened punch spikes on the surface, and striking the punch plate to drive punches into the trimmed surface. In another embodiment, holes are drilled using a drilling template with predrilled guidance holes placed on the surface of the bone. In another embodiment, holes are drilled by positioning a robotic drill over the trimmed surface; adjusting a drilling pattern of the robotic drill according to the trimmed surface; and using the robotic drill to drill holes of predetermined depth according to the drilling pattern.
    Type: Application
    Filed: October 21, 2019
    Publication date: February 13, 2020
    Inventors: Douglas W. Van Citters, Bridget E. Shaia, Spencer H. Amundsen, James A. Yang
  • Patent number: 10448958
    Abstract: A method of attaching prosthetic implants to bone, applicable to tibia, patella, acetabulum, glenoid, or femur, includes trimming an articular surface of the bone, leaving a trimmed surface. Holes are punched or drilled into the surface in a predetermined array before polymethyl methacrylate bone cement is used to attach the surface to the implant. In an embodiment, the holes are punched by placing a punch-plate with sharpened punch spikes on the surface, and striking the punch plate to drive punches into the trimmed surface. In another embodiment, holes are drilled using a drilling template with predrilled guidance holes placed on the surface of the bone. In another embodiment, holes are drilled by positioning a robotic drill over the trimmed surface; adjusting a drilling pattern of the robotic drill according to the trimmed surface; and using the robotic drill to drill holes of predetermined depth according to the drilling pattern.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: October 22, 2019
    Assignee: THE TRUSTEES OF DARTMOUTH COLLEGE
    Inventors: Douglas W. Van Citters, Bridget E. Shaia, Spencer H. Amundsen, James A. Yang
  • Publication number: 20170020560
    Abstract: Survival of patients suffering from many infections diarrheal diseases, including Ebola, as well as trauma and post-partum hemorrhage is improved with large-volume, parenteral, fluid replacement. In lieu of IVs, Intra-Osseous (IO) lines are placed with the help of a Humerus-Finder™, a one-piece guide that identifies the humeral head at the shoulder and allows for easy, safe, placement of an IO line. This guide enables healthcare providers and lay-providers to place IO lines and deliver fluids to infected persons without direct contact, limiting risk to providers. The Humerus-Finder™ makes early, potentially life-saving, supportive treatment available where large-volume fluid infusion can save lives and is useful in disaster medicine and emergency medicine when it is not possible to place an IV line rapidly and safely by helping first responders achieve IO access for delivery of fluid resuscitation in a safe, reliable manner.
    Type: Application
    Filed: July 24, 2016
    Publication date: January 26, 2017
    Inventors: Douglas W. Van Citters, Alexander H. Slocum, JR., Steven D. Reinitz
  • Publication number: 20160374693
    Abstract: A method of attaching prosthetic implants to bone, applicable to tibia, patella, acetabulum, glenoid, or femur, includes trimming an articular surface of the bone, leaving a trimmed surface. Holes are punched or drilled into the surface in a predetermined array before polymethyl methacrylate bone cement is used to attach the surface to the implant. In an embodiment, the holes are punched by placing a punch-plate with sharpened punch spikes on the surface, and striking the punch plate to drive punches into the trimmed surface. In another embodiment, holes are drilled using a drilling template with predrilled guidance holes placed on the surface of the bone. In another embodiment, holes are drilled by positioning a robotic drill over the trimmed surface; adjusting a drilling pattern of the robotic drill according to the trimmed surface; and using the robotic drill to drill holes of predetermined depth according to the drilling pattern.
    Type: Application
    Filed: June 22, 2016
    Publication date: December 29, 2016
    Inventors: Douglas W. Van Citters, Bridget E. Shaia, Spencer H. Amundsen, James A. Yang
  • Patent number: 8642723
    Abstract: Angular extrusion (AE) methods for creating monolithic polymers with high crystallinity, but small crystallite size, are disclosed. The methods involve consolidating granular polymer in an extrusion channel having at least one strain-imposing feature.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: February 4, 2014
    Assignee: The Trustees of Dartmouth College
    Inventor: Douglas W. Van Citters
  • Publication number: 20120178892
    Abstract: Angular extrusion (AE) methods for creating monolithic polymers with high entanglement density, but small crystallite size, are disclosed. The methods involve consolidating granular polymer in an extrusion channel having at least one strain-imposing feature.
    Type: Application
    Filed: September 16, 2010
    Publication date: July 12, 2012
    Inventor: Douglas W. Van Citters