Patents by Inventor Chris B. Alexander

Chris B. Alexander 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: 5254129
    Abstract: A hand-held instrument is disclosed for use in surgery. The instrument has a set of opposed jaws that pivot about a common axis with respect to a shaft of the instrument's handle. The upper jaw has an upper blade rigidly affixed to one side thereof. A lower blade is rigidly affixed to the shaft. When the upper jaw and upper blade are jointly forced to pivot downward by a push rod on the shaft, the rotating upper blade moves past the stationary lower blade to amputate a piece of tissue in scissor-cutting fashion. The lower jaw is simultaneously forced (by the interposed tissue) to rotate about its pivot downwardly, i.e. in the same direction as and in fixed tandem with the upper jaw. The lower jaw is held tightly against the interposed tissue via a stiff spring against which the lower jaw is biased. The spring causes the jaws to tightly clasp the tissue in plier-clamping fashion during and after its amputation from its attachment. The instrument is operated by a scissor handle arrangement.
    Type: Grant
    Filed: November 22, 1991
    Date of Patent: October 19, 1993
    Inventor: Chris B. Alexander