Patents by Inventor Pedro de la Sema

Pedro de la Sema 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).

  • Reusable, spring driven autoinjector
    Patent number: 7381201
    Abstract: The present invention provides a reusable spring driven autoinjector. The drive mechanism of the autoinjector of the present invention includes one or more drive springs formed of a shape memory alloy. Therefore, by alternating the shape memory alloy forming the one or more drive springs between austenite phase before an injection and a martensite phase after injection, the reusable autoinjector of the present invention is capable of providing an injection force that is higher than the compressive force required to cock the drive mechanism in preparation for a subsequent injection operation.
    Type: Grant
    Filed: June 24, 2003
    Date of Patent: June 3, 2008
    Assignee: Alza Corporation
    Inventors: Scott Gilbert, Pedro de la Sema
  • Reusable, spring driven autoinjector
    Publication number: 20040019326
    Abstract: The present invention provides a reusable spring driven autoinjector. The drive mechanism of the autoinjector of the present invention includes one or more drive springs formed of a shape memory alloy. Therefore, by alternating the shape memory alloy forming the one or more drive springs between austenite phase before an injection and a martensite phase after injection, the reusable autoinjector of the present invention is capable of providing an injection force that is higher than the compressive force required to cock the drive mechanism in preparation for a subsequent injection operation.
    Type: Application
    Filed: June 24, 2003
    Publication date: January 29, 2004
    Inventors: Scott Gilbert, Pedro de la Sema