Our Professionals
Karen L. Orzechowski, J.D.
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Changchun Sun, M.D.

Medical Advisor


*Not Admitted to Any Jurisdiction

Professional Profile


  • M.D. (2003)
    Guangzhou Medical University


  • Chinese (Mandarin and Cantonese dialects)
  • English


  • Distinguished National Sales Award in China, Pfizer (4 times)
  • Inventor of 1 U.S. patent and 9 Chinese patents

Professional Experience

  • Founder, Guangzhou Yulin Medical Science & Technology Company, Ltd.
  • Sale Manager, Dainippon Sumitomo Pharma Co. Ltd
  • Sale Representative, Guangzhou Region, Pfizer


  • U.S. Patent 9,301,673
    “Vaginal dilator for use in gynecologic examination”
  • Chinese Patent 204158774U
    “Flushing and drainage device”
  • Chinese Patent 204147003U
    “Gynecological examining vaginal speculum”
  • Chinese Patent 203447605U
    “Tracheotomy tube”
  • Chinese Patent 203802436U
    “Vagina expanding device for gynecological examination”
  • Chinese Patent 203208506U
    “Gastrointestinal tube guide wire with camera”
  • Chinese Patent 202875841U
    “Gastric tube with camera”
  • Chinese Patent 203885690U
    “Medical polymer splint”
  • Chinese Patent 303128517S
    “Vagina expanding device for gynecologicalexamination”
  • Chinese Patent 303199688S
    “Vagina expanding device for gynecological examination”
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