Patents by Inventor Ernst B. Hunziker

Ernst B. Hunziker 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).

  • Patent number: 7575743
    Abstract: Compositions and methods are provided for treatment of cartilage defects in animals and humans. The compositions of the invention include synovial tissue, synovial cells and matrices containing synovial (or cambium) tissue or cells for use in filling a cartilage defect. The matrix and synovial tissue or cell preparations may also contain a proliferation agent, transforming factor or other active agents to promote healing. A controlled-release delivery system may be used to administer the transforming factor. The compositions of the invention also include a synovial covering membrane or devitalized fascial sheet for covering the cartilage defect. The methods of this invention are those in which a minimally invasive surgical intervention is performed to remove a small portion of synovial membrane from a joint. Portions of the synovial membrane, or cells expanded in vitro, are implanted alone or within a matrix, into the defect site, where they produce new cartilage tissue and repair the defect.
    Type: Grant
    Filed: January 30, 2002
    Date of Patent: August 18, 2009
    Assignee: Orthogene, Inc.
    Inventor: Ernst B. Hunziker
  • Publication number: 20020122790
    Abstract: Compositions and methods are provided for treatment of cartilage defects in animals and humans. The compositions of the invention include synovial tissue, synovial cells and matrices containing synovial (or cambium) tissue or cells for use in filling a cartilage defect. The matrix and synovial tissue or cell preparations may also contain a proliferation agent, transforming factor or other active agents to promote healing. A controlled-release delivery system may be used to administer the transforming factor. The compositions of the invention also include a synovial covering membrane or devitalized fascial sheet for covering the cartilage defect. The methods of this invention are those in which a minimally invasive surgical intervention is performed to remove a small portion of synovial membrane from a joint. Portions of the synovial membrane, or cells expanded in vitro, are implanted alone or within a matrix, into the defect site, where they produce new cartilage tissue and repair the defect.
    Type: Application
    Filed: January 30, 2002
    Publication date: September 5, 2002
    Inventor: Ernst B. Hunziker
  • Patent number: 5853746
    Abstract: Methods and compositions are provided for the treatment and repair of defects in the cartilage or bone of humans and other animals as in full-thickness defects in joints. To induce cartilage formation, a defect in cartilage is filled with a matrix having pores sufficiently large to allow cartilage repair cells to populate the matrix. The matrix contains an anti-angiogenic agent that serves as a functional barrier to prevent vascularization and bone growth into the cartilage area. The matrix filling the defect in cartilage may also contain a proliferation agent and a chemotactic agent, and a transforming factor in an appropriate delivery system. A functional barrier between the bone and cartilage areas of a full-thickness defect may also be created by heat-treating the areas of bleeding to form a transient tissue barrier which prevents blood vessels and associated cells from penetrating from the bone area into the cartilage area.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: December 29, 1998
    Assignee: Robert Francis Shaw
    Inventor: Ernst B. Hunziker
  • Patent number: 5736132
    Abstract: A formulated biological adhesive composition utilizes tissue transglutaminase in a pharmaceutically acceptable aqueous carrier. The tissue transglutaminase is used in an effective catalytic amount to promote adhesion between tissue surfaces upon treatment thereof by catalyzing the reaction between glutaminyl residues and amine donors of the tissue and/or the enzyme. The carrier contains a divalent metal ion such as calcium to promote said reaction.
    Type: Grant
    Filed: January 29, 1996
    Date of Patent: April 7, 1998
    Assignee: Orthogene, Inc.
    Inventors: Kay Juergensen, Daniel Aeschlimann, Ernst B. Hunziker
  • Patent number: 5549904
    Abstract: A formulated biological adhesive composition utilizes tissue transglutaminase in a pharmaceutically acceptable aqueous carrier. The tissue transglutaminase is used in an effective catalytic amount to promote adhesion between tissue surfaces upon treatment thereof by catalyzing the reaction between glutaminyl residues and amine donors of the tissue and/or the enzyme. The carrier contains a divalent metal ion such as calcium to promote said reaction.
    Type: Grant
    Filed: June 3, 1993
    Date of Patent: August 27, 1996
    Assignee: Orthogene, Inc.
    Inventors: Kay Juergensen, Daniel Aeschlimann, Ernst B. Hunziker
  • Patent number: 5368858
    Abstract: Methods and compositions are provided for the treatment and repair of defects or lesions in the cartilage of humans and other animals. The defect or lesion in the cartilage may be first treated with an enzyme to remove proteoglycans from the defect area. To induce cartilage formation, the defect is filled or otherwise dressed with a biodegradable matrix having pores sufficiently large to allow repair cells to populate the matrix. The matrix filling the defect contains a proliferation agent at a concentration sufficient to stimulate proliferation of repair cells and a transforming factor in an appropriate delivery system to release the transforming factor at a concentration sufficient to transform repair cells in the matrix and defect area into cartilage-producing chondrocytes. The matrix may also contain a chemotactic agent to attract repair cells. The entire treatment may be carried out in a single arthroscopic or open surgical procedure.
    Type: Grant
    Filed: November 23, 1992
    Date of Patent: November 29, 1994
    Assignee: Robert F. Shaw
    Inventor: Ernst B. Hunziker
  • Patent number: 5270300
    Abstract: Methods and compositions are provided for the treatment and repair of defects in the cartilage or bone of humans and other animals as in full-thickness defects in joints. The defect in bone is filled with a matrix having pores large enough to allow cells to populate the matrix and to form blood vessels. The matrix filling the bone defect contains an angiogenic factor and also contains an osteogenic factor in an appropriate delivery system. To induce cartilage formation, a defect in cartilage is filled with a matrix having pores sufficiently large to allow cartilage repair cells to populate the matrix. The matrix filling the defect in cartilage contains a proliferation agent and also contains a transforming factor in an appropriate delivery system. The matrix may also contain a chemotactic agent to attract cartilage repair cells.
    Type: Grant
    Filed: September 6, 1991
    Date of Patent: December 14, 1993
    Assignee: Robert Francis Shaw
    Inventor: Ernst B. Hunziker
  • Patent number: 5206023
    Abstract: Methods and compositions are provided for the treatment and repair of defects or lesions in the cartilage of humans and other animals. The defect or lesion in the cartilage may be first treated with an enzyme to remove proteoglycans from the defect area. To induce cartilage formation, the defect is filled or otherwise dressed with a biodegradable matrix having pores sufficiently large to allow repair cells to populate the matrix. The matrix filling the defect contains a proliferation agent at a concentration sufficient to stimulate proliferation of repair cells and a transforming factor in an appropriate delivery system to release the transforming factor at a concentration sufficient to transform repair cells in the matrix and defect area into cartilage-producing chondrocytes. The matrix may also contain a chemotactic agent to attract repair cells. The entire treatment may be carried out in a single arthroscopic or open surgical procedure.
    Type: Grant
    Filed: January 31, 1991
    Date of Patent: April 27, 1993
    Assignee: Robert F. Shaw
    Inventor: Ernst B. Hunziker