Patents Represented by Attorney, Agent or Law Firm Brent E. Field
  • Method for making a microcannula
    Patent number: 6248196
    Abstract: A microcannula suitable for cannulation of very small blood vessels having a sharp pointed trochar tightly but removable placed in the lumen of the microcannula. The trochar is held in place by contact friction from an area of reduced inside diameter distal to the tip end, formed by welding the end distal of the microcannula to a tube having a slightly larger diameter. A process for making a microcannula is also provided.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: June 19, 2001
    Assignee: BioTime, Inc.
    Inventors: Harold D. Waitz, Hal Sternberg, Paul E. Segall, Bruce Cohen