Patents by Inventor Yongming Xian

Yongming Xian 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).

  • Depth controller for epidural needle
    Publication number: 20010047151
    Abstract: A method for holding an epidural needle together with a syringe and controlling the depth and advancement of penetration of the epidural needle during the epidural needle insertion into the human epidural space through the multiple layers of the tissues with the apparatus of the invention.
    Type: Application
    Filed: February 1, 2001
    Publication date: November 29, 2001
    Inventors: Yongming Xian, Deye Wei