Patents by Inventor Charles Ritchie

Charles Ritchie 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).

  • Peritoneal trocar apparatus and system
    Patent number: 12564421
    Abstract: A trocar for peritoneal dialysis is disclosed herein. An example trocar includes a conduit having two parallel lumens and a head connected to a first end of the conduit. The head includes two parallel lumens that are aligned respectively with the two parallel lumens of the conduit. The trocar also includes a coupler connected to the head. The coupler includes two (or more) parallel lumens that are aligned respectively with the two parallel lumens of the head. The coupler includes a coupling mechanism for securing surgical tools in place after insertion into a patient. The trocar may also include an obturator having a shaft that is removably inserted through the coupler, the head, and the conduit to protrude from a second end of the conduit.
    Type: Grant
    Filed: February 8, 2022
    Date of Patent: March 3, 2026
    Assignees: Baxter International Inc., Baxter Healthcare SA, Mayo Foundation for Medical Education and Research
    Inventors: Shawn Collin Oppegard, Unberto Garcia, Carlos Alberto Corrales Nogales, Jorge Del Castillo, Jeshrene Enerio, Brian Connell, Steven Bowers, Ivan E. Porter, II, Charles Ritchie
  • PERITONEAL TROCAR APPARATUS AND SYSTEM
    Publication number: 20220249124
    Abstract: A trocar for peritoneal dialysis is disclosed herein. An example trocar includes a conduit having two or more parallel lumens and a head connected to a first end of the conduit. The head includes two (or more) parallel lumens that are aligned respectively with the parallel conduit lumens and includes at least one of a gasket or a seal for each lumen. The trocar also includes a coupler connected to the head. The coupler includes two (or more) parallel lumens that are aligned respectively with the parallel lumens of the head. The coupler includes a coupling mechanism for each lumen for securing surgical tools in place after insertion into a patient. The trocar may also include an obturator having a shaft that is removably inserted through the coupler, head, and conduit to protrude from a second end of the conduit.
    Type: Application
    Filed: February 8, 2022
    Publication date: August 11, 2022
    Inventors: Shawn Collin Oppegard, Unberto Garcia, Carlos Corrales, Jorge Del Castillo, Jeshrene Enerio, Brian Connell, Steven Bowers, Ivan E. Porter, II, Charles Ritchie
  • Integrated circuit and method of improving signal integrity
    Publication number: 20060238218
    Abstract: An Integrated Circuits (ICs) comprising a first output stage circuit and a second output stage circuit that share common input terminals and an output terminal of the first and second output stage circuits being selectably coupled between the input terminals and the output terminal in preference to the other.
    Type: Application
    Filed: June 23, 2006
    Publication date: October 26, 2006
    Inventors: Charles Ritchie, Fesseha Seifu
  • Integrated circuit and method of improving signal integrity
    Publication number: 20050030063
    Abstract: An integrated circuit comprising a first output stage circuit and a second output stage circuit that share common input terminals and an output terminal of the first and second output stage circuits being selectably coupled between the input terminals and the output terminal in preference to the other.
    Type: Application
    Filed: August 3, 2004
    Publication date: February 10, 2005
    Inventors: Charles Ritchie, Fesseha Seifu