Patents by Inventor Zhen Qian-Wallis

Zhen Qian-Wallis 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).

  • Fragmented polymeric compositions and methods for their use
    Patent number: 8512729
    Abstract: Cross-linked hydrogels comprise a variety of biologic and non-biologic polymers, such as proteins, polysaccharides, and synthetic polymers. Such hydrogels preferably have no free aqueous phase and may be applied to target sites in a patient's body by extruding the hydrogel through an orifice at the target site. Alternatively, the hydrogels may be mechanically disrupted and used in implantable articles, such as breast implants. When used in vivo, the compositions are useful for controlled release drug delivery, for inhibiting post-surgical spinal and other tissue adhesions, for filling tissue divots, tissue tracts, body cavities, surgical defects, and the like.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: August 20, 2013
    Assignees: Baxter International Inc., Baxter Healthcare S.A.
    Inventors: Donald G. Wallace, Cary J. Reich, Narinder S. Shargill, Felix Vega, A. Edward Osawa, Zhen Qian-Wallis
  • Fragmented polymeric compositions and methods for their use
    Patent number: 8303981
    Abstract: Cross-linked hydrogels comprise a variety of biologic and non-biologic polymers, such as proteins, polysaccharides, and synthetic polymers. Such hydrogels preferably have no free aqueous phase and may be applied to target sites in a patient's body by extruding the hydrogel through an orifice at the target site. Alternatively, the hydrogels may be mechanically disrupted and used in implantable articles, such as breast implants. When used in vivo, the compositions are useful for controlled release drug delivery, for inhibiting post-surgical spinal and other tissue adhesions, for filling tissue divots, tissue tracts, body cavities, surgical defects, and the like.
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: November 6, 2012
    Assignees: Baxter International Inc., Baxter Healthcare S.A.
    Inventors: Donald G. Wallace, Cary J. Reich, Narinder S. Shargill, Felix Vega, A. Edward Osawa, Zhen Qian-Wallis
  • FRAGMENTED POLYMERIC COMPOSITIONS AND METHODS FOR THEIR USE
    Publication number: 20120134980
    Abstract: Cross-linked hydrogels comprise a variety of biologic and non-biologic polymers, such as proteins, polysaccharides, and synthetic polymers. Such hydrogels preferably have no free aqueous phase and may be applied to target sites in a patient's body by extruding the hydrogel through an orifice at the target site. Alternatively, the hydrogels may be mechanically disrupted and used in implantable articles, such as breast implants. When used in vivo, the compositions are useful for controlled release drug delivery, for inhibiting post-surgical spinal and other tissue adhesions, for filling tissue divots, tissue tracts, body cavities, surgical defects, and the like.
    Type: Application
    Filed: July 1, 2011
    Publication date: May 31, 2012
    Applicants: Baxter Healthcare S.A., Baxter International Inc.
    Inventors: Donald G. Wallace, Cary J. Reich, Narinder S. Shargill, Felix Vega, A. Edward Osawa, Zhen Qian-Wallis