Patents by Inventor Stanley D. Harpstead

Stanley D. Harpstead 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).

  • Patent number: 6479066
    Abstract: A device and method of using the device are provided for implanting cell cultures in a host. The device is formed of a deformable body, a microporous membrane and a sealable port. The shape of the body which is preferably rounded can be altered by applying stress or pressure, The body comprises a continuous wall constructed of a mesh material, and the membrane lines a surface of the body. The wall and membrane define an enclosed three-dimensional cavity for containing a cell culture. Openings of the membrane allow for passage of therapeutic substances produced by the cells and nutrients or biomolecules produced by host. The sealable port is configured for adding a cell culture to the cavity, and is formed of a material that is capable of resealing after being punctured with a needle. Because the device is deformable, it can be compressed and placed in an implantation site where it expands to conform to contours of tissue surrounding the site.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: November 12, 2002
    Assignee: RST Implanted Cell Technology, LLC
    Inventor: Stanley D. Harpstead
  • Patent number: 5697951
    Abstract: An implantable system for infusing a fluid agent and providing electrical stimulation without requiring an implanted pump or implanted source of electrical energy. An implantable housing is fitted with a percutaneous fill port that communicates with a reservoir to hold a fluid agent, such as a drug. An antenna located inside the housing receives radio frequency power signals from an outside antenna. A pulse generator outside the housing receives power and information from the radio frequency signals to produce stimulation pulses. The pulses and the fluid agent are both transported by a catheter to a site of application in the body. A connector allows the stimulation pulses and fluid agent to be transported from the housing to the catheter while maintaining electrical isolation between the stimulating pulses and the fluid agent.
    Type: Grant
    Filed: April 25, 1996
    Date of Patent: December 16, 1997
    Assignee: Medtronic, Inc.
    Inventors: Stanley D. Harpstead, Lynn M. Otten, Thomas R. Prentice
  • Patent number: 5554092
    Abstract: An apparatus for testing and/or strengthening pelvic floor muscles includes an external casing having two separate pieces threaded or snap fit together, and a set of inserts having different weights being individually positioned in the external casing.
    Type: Grant
    Filed: June 3, 1994
    Date of Patent: September 10, 1996
    Assignee: Dacomed Corporation
    Inventors: Stanley D. Harpstead, Hugh Hestad