Patents by Inventor Michael J. Segerdal

Michael J. Segerdal 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: 5441410
    Abstract: A disposable saliva ejector which has a formable hollow tube (40) with a tip (42) on the end with openings for drawing in saliva. The tube has a beveled hole (46) near the top through which single-integral instruments such as a scaler or a rotary instrument such as a polishing brush may be cleaned of debris and the hole may be varied in size by bending outwardly or inwardly. A finger over the hole also may vary suction within the tube for manual volume control. The tip includes a guard (48) of a flat and resilient material preventing tissue aspiration into openings in the tip. Waste materials are trapped inside the tube with teeth (58), fingers (6) or shelves (62) that project inwardly. Debris may also be trapped by a loop (66) or S-shaped bend (68) in the tube itself. The ejector is disposed of after use on singular patient.
    Type: Grant
    Filed: April 8, 1993
    Date of Patent: August 15, 1995
    Inventor: Michael J. Segerdal