Patents by Inventor Helen H. Lu

Helen H. Lu 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).

  • Publication number: 20120100602
    Abstract: The subject application provides an apparatus for applying mechanical loading to a biological sample, said apparatus comprising: a bioreactor device configured to house the biological sample, and a load application unit for applying mechanical loading to the biological sample housed in the bioreactor device, said load application unit including: a) a first sliding arm for applying mechanical displacement to the biological sample in the bioreactor device in a first predetermined direction; and b) a guide rail coupled to the first sliding arm to limit movement of the first sliding arm such that the first sliding arm moves only in the first predetermined direction when displaced.
    Type: Application
    Filed: December 8, 2009
    Publication date: April 26, 2012
    Inventors: Helen H Lu, Mario Castillo, Brooth R. Dargis
  • Patent number: 8137972
    Abstract: Scaffolds for tissue engineering prepared from biocompatible, biodegradable polymer-based, lighter than or light as water microcarriers and designed for cell culturing in vitro in a rotating bioreactor are provided. Methods for preparation and use of these scaffolds as tissue engineering devices are also provided.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: March 20, 2012
    Assignees: Drexel University, The Wistar Institute, The Trustees Of The University of Pennsylvania
    Inventors: Cato T. Laurencin, Solomon R. Pollack, Elliot Levine, Edward Botchwey, Helen H. Lu, Mohammed Yusuf Khan
  • Publication number: 20110066242
    Abstract: An implantable device is provided for soft-tissue or soft tissue-to-bone repair, fixation, augmentation, or replacement that includes a biomimetic and biodegradable nanofiber scaffold. Also provided is a fully synthetic implantable multiphased scaffold which includes, in a single continuous construct, a plurality of phases to mimic the natural anatomy of a tendon or ligament and their insertion sites. Also provided are scaffold apparatuses for musculoskeletal tissue engineering.
    Type: Application
    Filed: August 24, 2010
    Publication date: March 17, 2011
    Inventors: Helen H. Lu, Jeffrey Spalazzi, Kristen L. Moffat, William N. Levine
  • Publication number: 20100292791
    Abstract: An implantable device is provided for soft-tissue or soft tissue-to-bone repair, fixation, augmentation, or replacement that includes a biomimetic and biodegradable nanofiber scaffold. Also provided is a fully synthetic implantable multiphased scaffold which includes, in a single continuous construct, a plurality of phases to mimic the natural anatomy of a tendon or ligament and their insertion sites. Also provided are scaffold apparatuses for musculoskeletal tissue engineering.
    Type: Application
    Filed: August 12, 2009
    Publication date: November 18, 2010
    Inventors: Helen H. Lu, Jeffrey Spalazzi, Kristen L. Moffat, William N. Levine
  • Publication number: 20100291178
    Abstract: Methods and apparatuses are provided for musculoskeletal tissue engineering. For example, a scaffold apparatus is provided which comprises microspheres of selected sizes and/or composition. The microspheres are layered to have a gradient of microsphere sizes and/or compositions. The scaffold provides a functional interface between multiple tissue types.
    Type: Application
    Filed: December 22, 2009
    Publication date: November 18, 2010
    Applicant: The Trustees of Columbia University
    Inventors: Helen H. Lu, Jeffrey Spalazzi, Kathie Dionisio
  • Patent number: 7767221
    Abstract: Methods and apparatuses are provided for musculoskeletal tissue engineering. For example, a scaffold apparatus is provided which comprises microspheres of selected sizes and/or composition. The microspheres are layered to have a gradient of microsphere sizes and/or compositions. The scaffold provides a functional interface between multiple tissue types.
    Type: Grant
    Filed: March 4, 2005
    Date of Patent: August 3, 2010
    Assignee: The Trustees of Columbia University in the City of New York
    Inventors: Helen H. Lu, Jeffrey Spalazzi, Kathie Dionisio
  • Publication number: 20100047309
    Abstract: This application describes apparatuses and methods for musculoskeletal tissue engineering. Specifically, graft collar and scaffold apparatuses are provided for promoting fixation of musculoskeletal soft tissue to bone. This application provides for graft collars comprising biopolymer mesh and/or polymer-fiber mesh for fixing tendon to bone. In one aspect, the graft collar comprises more than one region, wherein the regions can comprise different materials configured to promote integration of and the regeneration of the interfacial region between tendon and bone. This application also provides for scaffold apparatuses and methods for fixing musculoskeletal soft tissue to bone. The scaffold apparatus is multiphasic, preferably triphasic, and each phase is configured promote growth and proliferation of a different cell and its associated tissue. In one aspect, the scaffold apparatus is triphasic, with phases comprising materials to promote growth and proliferation of fibroblasts, chondroblasts, and osteoblasts.
    Type: Application
    Filed: June 6, 2009
    Publication date: February 25, 2010
    Inventors: Helen H. Lu, Jeffrey P. Spalazzi, Moira C. Vyner, Kristen L. Moffat
  • Publication number: 20040115238
    Abstract: Bone grafting materials containing a polymer scaffold loaded with bone morphogenetic proteins and populated with muscle cells induced by the bone morphogenetic proteins to exhibit an osteoblastic phenotype and to synthesize bone tissue are provided. Also provided are methods for using these polymer scaffolds in bone grafting procedures.
    Type: Application
    Filed: January 28, 2004
    Publication date: June 17, 2004
    Inventors: Cato T. Laurencin, Helen H. Lu, Michelle D. Kofron, Saadiq El-Amin, Mohamed A. Attawia
  • Publication number: 20020155559
    Abstract: Scaffolds for tissue engineering prepared from biocompatible, biodegradable polymer-based, lighter than or light as water microcarriers and designed for cell culturing in vitro in a rotating bioreactor are provided. Methods for preparation and use of these scaffolds as tissue engineering devices are also provided.
    Type: Application
    Filed: January 17, 2002
    Publication date: October 24, 2002
    Inventors: Cato T. Laurencin, Solomon R. Pollack, Elliot Levine, Edward Botchwey, Helen H. Lu, Mohammed Yusuf Khan
  • Publication number: 20020133229
    Abstract: Degradable, polymeric fiber-based, three-dimensional braided scaffolds for use as graft materials in ligament and tendon repair, reconstruction and replacement are provided. Also provided are methods for preparing these scaffolds.
    Type: Application
    Filed: June 11, 2001
    Publication date: September 19, 2002
    Inventors: Cato T. Laurencin, Frank K. Ko, James A. Cooper, Helen H. Lu, Mohammed A. Attawia