Patents by Inventor Wan-Ju Li

Wan-Ju Li 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: 20160106548
    Abstract: The instant invention is directed to a tissue engineered intervertebral disc comprising at least one inner layer and an exterior layer, wherein: the exterior layer comprises a nanofibrous polymer support comprising one or more polymer nanofibers; the at least one inner layer comprises a hydrogel composition comprising at least one or more hydrogel materials and/or one or more polymer nanofibers; and a plurality of cells which are dispersed throughout the tissue engineered intervertebral disc. Additionally, the instant invention is directed to methods of making such intervertebral discs and methods of treating intervertebral disc damage.
    Type: Application
    Filed: December 28, 2015
    Publication date: April 21, 2016
    Inventors: Wan-Ju Li, Leon J. Nesti, Rocky S. Tuan
  • Publication number: 20120225039
    Abstract: Cartilage has been constructed using biodegradable electrospun polymeric scaffolds seeded with chondrocytes or adult mesenchymal stem cells. More particularly engineered cartilage has been prepared where the cartilage has a biodegradable and biocompatible nanofibrous polymer support prepared by electrospinning and a plurality of chondocytes or mesenchymal stem cells dispersed in the pores of the support. The tissue engineered cartilages of the invention possess compressive strength properties similar to natural cartilage. Methods of preparing engineered tissues, including tissue engineered cartilages, are provided in which an electrospun nanofibrous polymer support is provided, the support is treated with a cell solution and the polymer-cell mixture cultured in a rotating bioreactor to generate the cartilage. The invention provides for the use of the tissue engineered cartilages in the treatment of cartilage degenerative diseases, reconstructive surgery, and cosmetic surgery.
    Type: Application
    Filed: May 15, 2012
    Publication date: September 6, 2012
    Applicant: The Government of the United States of America, as represented by the Secretary,Department of Health
    Inventors: Wan-Ju Li, Rocky S. Tuan
  • Patent number: 8202551
    Abstract: Cartilage has been constructed using biodegradable electrospun polymeric scaffolds seeded with chondrocytes or adult mesenchymal stem cells. More particularly engineered cartilage has been prepared where the cartilage has a biodegradable and biocompatible nanofibrous polymer support prepared by electrospinning and a plurality of chondocytes or mesenchymal stem cells dispersed in the pores of the support. The tissue engineered cartilages of the invention possess compressive strength properties similar to natural cartilage. Methods of preparing engineered tissues, including tissue engineered cartilages, are provided in which an electrospun nanofibrous polymer support is provided, the support is treated with a cell solution and the polymer-cell mixture cultured in a rotating bioreactor to generate the cartilage. The invention provides for the use of the tissue engineered cartilages in the treatment of cartilage degenerative diseases, reconstructive surgery, and cosmetic surgery.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: June 19, 2012
    Assignee: The United States of America, as represented by the Secretary, Department of Health & Human Services
    Inventors: Wan-Ju Li, Rocky S. Tuan
  • Publication number: 20110190886
    Abstract: A fabricated braided nanofibrous structure having nanofiber bundles that independently have nanofibers oriented in a uniaxial direction and methods of preparing braided nanofibrous structures. More specifically, the braided nanofibrous structures have at least three nanofiber bundles, wherein the nanofiber bundles are braided together and each nanofiber bundle independently includes at least two nanofibers oriented in a uniaxial direction. The braided nanofibrous structures may be inserted into a region of damaged ligament, tendon, or muscle in a subject.
    Type: Application
    Filed: January 29, 2010
    Publication date: August 4, 2011
    Applicant: WISCONSIN ALUMNI RESEARCH FOUNDATION
    Inventor: Wan-Ju Li
  • Publication number: 20100179659
    Abstract: The instant invention is directed to a tissue engineered intervertebral disc comprising at least one inner layer and an exterior layer, wherein: the exterior layer comprises a nanofibrous polymer support comprising one or more polymer nanofibers; the at least one inner layer comprises a hydrogel composition comprising at least one or more hydrogel materials and/or one or more polymer nanofibers; and a plurality of cells which are dispersed throughout the tissue engineered intervertebral disc. Additionally, the instant invention is directed to methods of making such intervertebral discs and methods of treating intervertebral disc damage.
    Type: Application
    Filed: September 27, 2007
    Publication date: July 15, 2010
    Inventors: Wan-Ju Li, Leon J. Nesti, Rocky S. Tuan
  • Publication number: 20100061962
    Abstract: Cartilage has been constructed using biodegradable electrospun polymeric scaffolds seeded with chondrocytes or adult mesenchymal stem cells. More particularly engineered cartilage has been prepared where the cartilage has a biodegradable and biocompatible nanofibrous polymer support prepared by electrospinning and a plurality of chondocytes or mesenchymal stem cells dispersed in the pores of the support. The tissue engineered cartilages of the invention possess compressive strength properties similar to natural cartilage. Methods of preparing engineered tissues, including tissue engineered cartilages, are provided in which an electrospun nanofibrous polymer support is provided, the support is treated with a cell solution and the polymer-cell mixture cultured in a rotating bioreactor to generate the cartilage. The invention provides for the use of the tissue engineered cartilages in the treatment of cartilage degenerative diseases, reconstructive surgery, and cosmetic surgery.
    Type: Application
    Filed: June 15, 2006
    Publication date: March 11, 2010
    Applicant: Government of the US, as represented by the Secretary, Department of Health and Human Sevices
    Inventor: Wan-Ju Li