Patents by Inventor Karyl L. Stapert

Karyl L. Stapert 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).

  • Oval-shaped cardiac cannula
    Patent number: 8167867
    Abstract: A method of performing minimally invasive cardiac surgery includes the step of creating an access aperture into a patient's chest cavity, the access aperture being considerably smaller than a traditional cardiac surgery incision. A cannula is provided that has an oval portion with a longer major axis and a shorter minor axis and the cannula is inserted into the chest cavity through the access aperture.
    Type: Grant
    Filed: August 16, 2007
    Date of Patent: May 1, 2012
    Assignee: Medtronic, Inc.
    Inventors: Roderick E. Briscoe, Paul F. Rom, Karyl L. Stapert, David B. DeWindt, Ronald A. Devries, Steven R Gundry, William F Sidor
  • Flexible disc obturator for a cannula assembly
    Patent number: 6645194
    Abstract: An obturator for a cannula includes an elongate member and a flexible disc. The cannula has proximal and distal ends and a lumen extending therebetween. The distal end of the cannula has a circular cross-section. The cannula also includes a first portion having a non-circular cross-section and at least one fluid aperture formed adjacent the distal end. The flexible disc of the obturator is coupled to a distal end of the elongate member, both of which are adapted to be telescopically received in the lumen of the cannula. The flexible disc is configured to restrict the flow of fluid, entering the at least one fluid aperture, through the lumen.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: November 11, 2003
    Assignee: Medtronic, Inc.
    Inventors: Roderick E. Briscoe, Paul F. Rom, Karyl L. Stapert, David B. DeWindt, Ronald A. Devries, Steven R. Gundry, William E. Sidor
  • Flexible disc obturator for a cannula assembly
    Patent number: 6447484
    Abstract: An obturator for a cannula includes an elongate member and a flexible disc. The cannula has proximal and distal ends and a lumen extending therebetween. The distal end of the cannula has a circular cross-section. The cannula also includes a first portion having a non-circular cross-section and at least one fluid aperture formed adjacent the distal end. The flexible disc of the obturator is coupled to a distal end of the elongate member, both of which are adapted to be telescopically received in the lumen of the cannula. The flexible disc is configured to restrict the flow of fluid, entering the at least one fluid aperture, through the lumen.
    Type: Grant
    Filed: January 23, 1998
    Date of Patent: September 10, 2002
    Assignee: Medtronic, Inc.
    Inventors: Roderick E. Briscoe, Paul F. Rom, Karyl L. Stapert, David B. DeWindt, Ronald A. Devries, Steven R. Gundry, William F. Sidor
  • Flexible disc obturator for a cannula assembly
    Publication number: 20020045862
    Abstract: An obturator for a cannula includes an elongate member and a flexible disc. The cannula has proximal and distal ends and a lumen extending therebetween. The distal end of the cannula has a circular cross-section. The cannula also includes a first portion having a non-circular cross-section and at least one fluid aperture formed adjacent the distal end. The flexible disc of the obturator is coupled to a distal end of the elongate member, both of which are adapted to be telescopically received in the lumen of the cannula. The flexible disc is configured to restrict the flow of fluid, entering the at least one fluid aperture, through the lumen.
    Type: Application
    Filed: December 21, 2001
    Publication date: April 18, 2002
    Applicant: Medtronic, Inc.
    Inventors: Roderick E. Briscoe, Paul F. Rom, Karyl L. Stapert, David B. DeWindt, Ronald A. Devries, Steven R. Gundry, William E. Sidor