Patents by Inventor Xiao Ma

Xiao Ma 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: 20110260358
    Abstract: Methods are disclosed for conditioning a polymeric stent after sterilization, and/or after crimping and before packaging, such that the properties of the polymeric stent fall within a narrower range of values. The stent is exposed to a controlled temperature at or above ambient for a period of time after radiation sterilization and/or after crimping and before sterilization. As a result, the polymeric stent properties, particularly radial strength and number-average molecular weight of the polymer of the polymeric stent, fall within a narrower range.
    Type: Application
    Filed: April 25, 2011
    Publication date: October 27, 2011
    Inventors: Yungbing Wang, Xiao Ma, Fuh-Wei Tang, Ni Ding
  • Publication number: 20110021717
    Abstract: Methods of making a biodegradable polymeric stent made from poly(L-lactide) and a low concentration of L-lactide monomer is disclosed. The concentration of L-lactide is adjusted to provide a degradation behavior that is suitable for different treatment applications including coronary, peripheral, and nasal. Methods include making a poly(L-lactide) material for a stent with uniformly distributed L-lactide monomer through control of polymerization conditions during PLLA synthesis, control of post-processing conditions, or both.
    Type: Application
    Filed: March 31, 2010
    Publication date: January 27, 2011
    Inventors: Yunbing Wang, Xiao Ma
  • Publication number: 20110022155
    Abstract: A biodegradable polymeric stent made from poly(L-lactide) and a low concentration of L-lactide monomer is disclosed. The concentration of L-lactide is adjusted to provide a degradation behavior that is suitable for different treatment applications including coronary, peripheral, and nasal.
    Type: Application
    Filed: July 21, 2009
    Publication date: January 27, 2011
    Inventors: Yunbing Wang, James Oberhauser, Xiao Ma
  • Publication number: 20110022163
    Abstract: The present invention relates to implantable medical devices comprising a L-lactide-constitutional unit-containing copolymer having a wt % percent crystallinity of 40% or less.
    Type: Application
    Filed: July 21, 2009
    Publication date: January 27, 2011
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: Yunbing Wang, James Oberhauser, Manish Gada, Thierry Glauser, Vincent Gueriguian, Bethany Steichen, Lothar Kleiner, Xiao Ma