Patents by Inventor Richard Andrew Zehel Sofranko

Richard Andrew Zehel Sofranko 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).

  • Single chamber blood pump
    Patent number: 6066085
    Abstract: A blood pump apparatus can include a pump housing having a drive chamber containing a drive mechanism. A cupped member can be connected to the housing and the drive mechanism can include a motor for rotating an eccentric shaft. A pumping arm can be provided having one end riding on the eccentric shaft, an intermediate portion pivotably attached to the housing and another end connected to a movable plate. A roller bearing can be mounted on the eccentric shaft on which the arm can ride. A compressible blood chamber having an inlet and an outlet connected can be provided sandwiched between the cupped portion and the movable plate. The motor thus rotates the cam causing the pumping arm to pivot which cycles the movable plate against the blood chamber to pump blood. The movable plate can be implanted adjacent a lung such that the lung moves with the plate as blood is pumped and thereby functions as a compliance chamber. A speed reducer can be provided between the motor and the eccentric shaft.
    Type: Grant
    Filed: July 22, 1999
    Date of Patent: May 23, 2000
    Assignee: Vascor, Inc.
    Inventors: Marlin Stephen Heilman, Christopher David Capone, Edward Karl Prem, Richard Andrew Zehel Sofranko, Carl Michael Parisi, Steve Andrew Kolenik, Daniel Richard Moore
  • Single chamber blood pump
    Patent number: 5980448
    Abstract: A blood pump apparatus can include a pump housing having a drive chamber containing a drive mechanism. A cupped member can be connected to the housing and the drive mechanism can include a motor for rotating an eccentric shaft. A pumping arm can be provided having one end riding on the eccentric shaft, an intermediate portion pivotably attached to the housing and another end connected to a movable plate. A roller bearing can be mounted on the eccentric shaft on which the arm can ride. A compressible blood chamber having an inlet and an outlet connected can be provided sandwiched between the cupped portion and the movable plate. The motor thus rotates the cam causing the pumping arm to pivot which cycles the movable plate against the blood chamber to pump blood. The movable plate can be implanted adjacent a lung such that the lung moves with the plate as blood is pumped and thereby functions as a compliance chamber. A speed reducer can be provided between the motor and the eccentric shaft.
    Type: Grant
    Filed: January 28, 1998
    Date of Patent: November 9, 1999
    Assignee: Vascor, Inc.
    Inventors: Marlin Stephen Heilman, Christopher David Capone, Edward Karl Prem, Richard Andrew Zehel Sofranko, Carl Michael Parisi, Steve Andrew Kolenik, Daniel Richard Moore