Patents by Inventor Mark W. Ziegler

Mark W. Ziegler 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).

  • Locking cannula for endoscopic surgery
    Patent number: 5456673
    Abstract: An endoscopic surgery cannula insertable into a surgical site in a patient for coaxially slideably receiving an endoscopic surgical tool. The cannula comprises a distal portion insertable into the surgical site. The cannula further comprises a proximal portion accessible to surgical personnel for receiving an endoscopic surgical tool and having a passage through which the distal portion of the surgical tool can be brought into the surgical site. The cannula proximal portion comprises a lock mechanism transversely slidable for interfering with axial movement with the tool therein and elastomeric loop structure stretchable for resiliently urging the lock mechanism transversely on the cannula to a lock position retaining the surgical tool in the cannula and which may be resiliently overcome to permit removal of the tool from the cannula.
    Type: Grant
    Filed: March 23, 1994
    Date of Patent: October 10, 1995
    Assignee: Stryker Corporation
    Inventors: Mark W. Ziegler, Larry J. Voss