Patents by Inventor Michael J. Armentrout

Michael J. Armentrout 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).

  • Endoscopic cannulated instrument flushing apparatus for forcing a cleaning solution through an endoscopic cannulated instrument for removal of gross debris
    Patent number: 5755894
    Abstract: An endoscopic instrument cleaning apparatus includes a syringe coupled to a flushing chamber by a form-fitting stopper. A distal, or instrument receiving end of the flushing chamber is inserted into a supply of cleaning fluid and the plunger of the syringe is drawn out to its fully retracted length, thereby filling the syringe and the flushing chamber with cleaning fluid. Then the distal end of an endoscopic instrument is inserted about through an aperture in a stopper having the shape of a conical frustum and is inserted into the flushing chamber to a depth of about 4 inches (10 cm) and the plunger of the syringe is thrust forward to inject pressurized cleaning solution through the endoscopic instrument. In another embodiment, the syringe receiving stopper is recessed within a proximal end of the flush chamber by about 3/8 inches (0.95-1.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: May 26, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Michael D. Bowman, Michael J. Armentrout, Drake L. Koch
  • Endoscopic cannulated instrument flushing apparatus for forcing a cleaning solution through an endoscopic cannulated instrument for removal of gross debris
    Patent number: 5511568
    Abstract: An endoscopic instrument cleaning apparatus includes a syringe coupled to a flushing chamber by a form-fitting stopper. A distal, or instrument receiving end of the flushing chamber is inserted into a supply of cleaning fluid and the plunger of the syringe is drawn out to its fully retracted length, thereby filling the syringe and the flushing chamber with cleaning fluid. Then the distal end of an endoscopic instrument is inserted about through an aperture in a stopper having the shape of a conical frustum and is inserted into the flushing chamber to a depth of about 4 inches (10 cm) and the plunger of the syringe is thrust forward to inject pressurized cleaning solution through the endoscopic instrument. In another embodiment, the syringe receiving stopper is recessed within a proximal end of the flush chamber by about 3/8 inches (0.95-1.
    Type: Grant
    Filed: October 1, 1993
    Date of Patent: April 30, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Michael D. Bowman, Michael J. Armentrout, Drake L. Koch
  • Endoscopic cannulated instrument flushing apparatus for forcing a cleaning solution through an endoscopic cannulated instrument for removal of gross debris
    Patent number: 5279317
    Abstract: An endoscopic instrument cleaning apparatus includes a syringe coupled to a flushing chamber by a form-fitting stopper. A distal, or instrument receiving end of the flushing chamber is inserted into a supply of cleaning fluid and the plunger of the syringe is drawn out to its fully retracted length, thereby filling the syringe and the flushing chamber with cleaning fluid. Then the distal end of an endoscopic instrument is inserted about through an aperture in a stopper having the shape of a conical frustum and is inserted into the flushing chamber to a depth of about 4 inches (10 cm) and the plunger of the syringe is thrust forward to inject pressurized cleaning solution through the endoscopic instrument. In another embodiment, the syringe receiving stopper is recessed within a proximal end of the flush chamber by about 3/8 inches (0.95-1.
    Type: Grant
    Filed: April 14, 1993
    Date of Patent: January 18, 1994
    Inventors: Michael D. Bowman, Michael J. Armentrout, Drake L. Koch