Patents by Inventor Sonny Chau

Sonny Chau 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).

  • Automated biopsy instruments
    Patent number: 6626850
    Abstract: The present invention provides automated biopsy instruments especially useful for improving minimally invasive medical procedures to obtain soft tissue biopsy samples. The biopsy instruments provide side-by-side actuators which retract a stylet and a cannula in specific sequences. The biopsy instruments may include a single spring or two springs to sequentially fire the stylet and the cannula.
    Type: Grant
    Filed: March 30, 1998
    Date of Patent: September 30, 2003
    Assignee: Allegiance Corporation
    Inventors: Sonny Chau, Jan Como-Rodriguez, Thomas Kupec
  • Automated biopsy instruments
    Patent number: 5779647
    Abstract: The present invention provides automated biopsy instruments especially useful for improving minimally invasive medical procedures to obtain soft tissue biopsy samples. The biopsy instruments provide side-by-side actuators which retract a stylet and a cannula in specific sequences. The biopsy instruments may include a single spring or two springs to sequentially fire the stylet and the cannula.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: July 14, 1998
    Inventors: Sonny Chau, Jan Como-Rodriguez, Thomas Kupec
  • Belt grinding machine and method for forming cutting edges on surgical instruments
    Patent number: 5575708
    Abstract: A belt grinding machine for forming cutting edges of complex geometry on surgical instruments includes a fixture for holding an instrument with a site thereon in a position for grinding a surface at the site on the instrument, a grinding assembly having a grinding belt with a planar span for grinding the surface at the site on the instrument, an oscillation producing mechanism for oscillating the instrument relative to the grinding belt so as to reciprocally translate the site on the instrument parallel and relative to the planar span of the grinding belt concurrently with grinding the surface at the site on the instrument, a translation producing mechanism for selectively translating the grinding assembly and thus the planar span of the grinding belt toward and away from the site on the instrument to permit receiving and setting up of the instrument in the instrument holding fixture and to place the instrument in a position for the planar span of the grinding belt to grind the surface at the site on the inst
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: November 19, 1996
    Assignee: Alligiance Corporation
    Inventors: Sonny Chau, Michael T. Dennehey