Patents by Inventor Dennis Wist

Dennis Wist 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).

  • CATHETER INSERTION SYSTEMS
    Publication number: 20230347111
    Abstract: Disclosed catheter insertion systems enable the user to identify the location of the needle based on the electrical properties of subcutaneous tissue relative the electrical properties of other fluids such as blood or air. Disclosed systems can include one or more of the following features: 1) the catheter assembly is modular (e.g., the catheter can be connected and disconnected from the detection unit at will); 2) the detection unit employs an electrical circuit that allows for the discernment between subcutaneous tissue and blood; 3) the system assists the end user with catheter advancement. Some embodiments can be used to insert catheters into a spaces where the needle passes first through subcutaneous fat and muscle before entering fluid or air.
    Type: Application
    Filed: June 2, 2023
    Publication date: November 2, 2023
    Applicant: University of Pittsburgh - Of the Commonwealth System of Higher Education
    Inventors: Cameron Dezfulian, William W. Clark, Ehsan Qaium, Dennis Wist
  • Catheter insertion systems
    Patent number: 11701494
    Abstract: Disclosed catheter insertion systems enable the user to identify the location of the needle based on the electrical properties of subcutaneous tissue relative the electrical properties of other fluids such as blood or air. Disclosed systems can include one or more of the following features: 1) the catheter assembly is modular (e.g., the catheter can be connected and disconnected from the detection unit at will); 2) the detection unit employs an electrical circuit that allows for the discernment between subcutaneous tissue and blood; 3) the system assists the end user with catheter advancement. Some embodiments can be used to insert catheters into a spaces where the needle passes first through subcutaneous fat and muscle before entering fluid or air.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: July 18, 2023
    Assignee: University of Pittsburgh—Of the Commonwealth System of Higher Education
    Inventors: Cameron Dezfulian, William W. Clark, Ehsan Qaium, Dennis Wist
  • CATHETER INSERTION SYSTEMS
    Publication number: 20200206471
    Abstract: Disclosed catheter insertion systems enable the user to identify the location of the needle based on the electrical properties of subcutaneous tissue relative the electrical properties of other fluids such as blood or air. Disclosed systems can include one or more of the following features: 1) the catheter assembly is modular (e.g., the catheter can be connected and disconnected from the detection unit at will); 2) the detection unit employs an electrical circuit that allows for the discernment between subcutaneous tissue and blood; 3) the system assists the end user with catheter advancement. Some embodiments can be used to insert catheters into a spaces where the needle passes first through subcutaneous fat and muscle before entering fluid or air.
    Type: Application
    Filed: July 5, 2018
    Publication date: July 2, 2020
    Applicant: University of Pittsburgh - Of the Commonwealth System of Higher Education
    Inventors: Cameron Dezfulian, William W. Clark, Ehsan Qaium, Dennis Wist