Patents by Inventor Walter W. Larkins

Walter W. Larkins 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).

  • Method of occluding a patient's ascending aorta and delivering cardioplegic fluid
    Publication number: 20020161321
    Abstract: An extracorporeal support system including an extracorporeal support apparatus and an arterial circulation support catheter. The arterial circulation support catheter includes a blood lumen with a proximal end coupled to extracorporeal support apparatus and a distal end inserted into the blood circulation. A vent lumen has a distal end that crosses the aortic valve into the left ventricle and provides direct venting of the left ventricle through the vent lumen. An arterial circulation support catheter occluding member is positioned either in an interior or at an exterior of the arterial circulation support catheter. A venous circulation support catheter is provided and includes a blood lumen with a proximal end coupled to the extracorporeal support apparatus and a distal end inserted into the blood circulation. A venous circulation support catheter occluding member is included and positioned in an interior or at an exterior of the venous circulation support catheter.
    Type: Application
    Filed: March 18, 2002
    Publication date: October 31, 2002
    Inventors: William P. Sweezer,, Ronald Coleman, Walter W. Larkins
  • Method of occluding a patient's ascending aorta and delivery cardioplegic fluid
    Patent number: 6398752
    Abstract: An extracorporeal support system including an extracorporeal support apparatus and an arterial circulation support catheter. The arterial circulation support catheter includes a blood lumen with a proximal end coupled to extracoporeal support apparatus and a distal end inserted into the blood circulation. A vent lumen has a distal end that crosses the aortic valve into the left ventricle and provides direct venting of the left ventricle through the vent lumen. An arterial circulation support catheter occluding member is positioned either in an interior or at an exterior of the arterial circulation support catheter. A venous circulation support catheter is provided and includes a blood lumen with a proximal end coupled to the extracorporeal support apparatus and a distal end inserted into the blood circulation. A venous circulation support catheter occluding member is included and positioned in an interior or at an exterior of the venous circulation support catheter.
    Type: Grant
    Filed: June 5, 1998
    Date of Patent: June 4, 2002
    Inventors: William P. Sweezer, Jr., Ronald Coleman, Walter W. Larkins, III
  • Catheter system and method for total isolation of the heart
    Patent number: 5810757
    Abstract: A system for providing total isolation of the heart includes an extracorporeal support apparatus. An arterial circulation support catheter is provided having a blood lumen with a proximal end coupled to the extracorporeal support apparatus and a distal end positioned in the aortic root and a left side of the heart. An arterial circulation support catheter occluding member is coupled to the arterial circulation support catheter. The arterial circulation support catheter occluding member is positioned to prevent blood flow into the left ventricle or left side of the heart. A venous circulation support catheter includes a blood lumen with a proximal end coupled to the extracorporeal support apparatus, and a distal end inserted into the blood circulation A venous circulation support catheter occluding member is coupled to the venous circulation support catheter and positioned between the superior vena cava and the inferior vena cava.
    Type: Grant
    Filed: December 1, 1995
    Date of Patent: September 22, 1998
    Assignee: Heartport, Inc.
    Inventors: William P. Sweezer, Jr., Ronald Coleman, Walter W. Larkins, III
  • Catheter system and method for venting the left ventricle
    Patent number: 5765568
    Abstract: An extracorporeal support system including an extracorporeal support apparatus and an arterial circulation support catheter. The arterial circulation support catheter includes a blood lumen with a proximal end coupled to extracorporeal support apparatus and a distal end inserted into the blood circulation. A vent lumen has a distal end that crosses the aortic valve into the left ventricle and provides direct venting of the left ventricle through the vent lumen. An arterial circulation support catheter occluding member is positioned either in an interior or at an exterior of the arterial circulation support catheter. A venous circulation support catheter is provided and includes a blood lumen with a proximal end coupled to the extracorporeal support apparatus and a distal end inserted into the blood circulation. A venous circulation support catheter occluding member is included and positioned in an interior or at an exterior of the venous circulation support catheter.
    Type: Grant
    Filed: December 1, 1995
    Date of Patent: June 16, 1998
    Assignee: Heartport, Inc.
    Inventors: William P. Sweezer, Jr., Ronald Coleman, Walter W. Larkins, III