Patents by Inventor Allen H. Okamoto

Allen H. Okamoto 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: 4177814
    Abstract: Self sealing cannula automatically maintains insufflation pressure in a body cavity. A slotted elastomeric valve is positioned in the valve seat with the slot disposed over the passage. The elastomeric valve is compressed to seal the slot, thus sealing the cannula passage.A surgical instrument such as a trocar or laparoscope may be slid through the cannula passage, which remains sealed regardless of the presence or absence of the surgical instrument within the passage.
    Type: Grant
    Filed: January 18, 1978
    Date of Patent: December 11, 1979
    Assignee: KLI, Incorporated
    Inventors: William R. Knepshield, Jerry Polizzi, Allen H. Okamoto