Patents by Inventor Leo S. Castillo

Leo S. Castillo 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).

  • Medical needle and needle sheath assembly
    Patent number: 5336199
    Abstract: A medical needle and needle sheath assembly is provided with a sub-assembly of sheath elements that may be actuated from a retracted nested condition to an extended non-nested condition to both surround and extend beyond the medical needle element to provide protection to the medical practitioner using the assembly. A blocker element contained within the sheath sub-assembly provides additional protection against inadvertent injury to the medical practitioner when the sheath sub-assembly is in its extended condition, and further provides an obvious indication of the sheath sub-assembly retracted and extended states.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: August 9, 1994
    Inventors: Leo S. Castillo, Gordon G. Lo