Patents by Inventor Donald N. Ross

Donald N. Ross 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).

  • Human heart valve replacement with porcine pulmonary valve
    Patent number: 5352240
    Abstract: A method of treating heart valve dysfunction in a human patient in which the dysfunctioning valve is replaced with a novel bioprosthesis. The novel bioprosthesis comprises a porcine pulmonary valve, which has preferably been treated to fix and also sterilize the valve tissue. The porcine pulmonary valve may either be stent mounted to facilitate its surgical implantation into the patient, or it may be unstented to reduce the possibility of embolism and thrombosis.
    Type: Grant
    Filed: May 31, 1989
    Date of Patent: October 4, 1994
    Assignee: Promedica International, Inc.
    Inventor: Donald N. Ross
  • Method for implanting unstented xenografts and allografts
    Patent number: 5089015
    Abstract: A holder for providing physiologic support to an unstented xenograft or allograft. The holder facilitates selection and implantation of a replacement unstented xenograft or allograft in the treatment of aortic heart valve dysfunction. The novel holder comprises a device replicating key dimensions of the recipient native aortic root and incorporates a trimming guide. The holder is designed for several common sizes of the recipient native aortic root and annulus.
    Type: Grant
    Filed: November 28, 1989
    Date of Patent: February 18, 1992
    Assignee: Promedica International
    Inventor: Donald N. Ross
  • Stent for a cardiac valve
    Patent number: 4343048
    Abstract: A stent for a cardiac valve comprises a metal base ring having metal legs projecting therefrom in a generally axial direction, each leg being flexible in such a manner that, when the stent has a valve installed therein and the valve is under pressure such as when operating in the heart, each respective leg can resiliently deform over substantially its whole axial length to take up strain in the valve without impairing its performance.
    Type: Grant
    Filed: August 4, 1980
    Date of Patent: August 10, 1982
    Inventors: Donald N. Ross, Endre Bodnar, William J. Hoskin