Patents by Inventor Melvin R. Toews

Melvin R. Toews 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).

  • Intrauterine device detection and removal system
    Patent number: 4727866
    Abstract: A system for the detection, location and extraction of an intrauterine device ("IUD") including a magnetic IUD, a locator probe to be used intravaginally and an extractor probe to be used intrauterinally, both containing at least one Hall effect generator. The probe is inserted into the patient and an indicator means is provided to communicate the presence of the IUD, in the case of the locator, or the distance of the IUD from the probe, in the case of the extractor. After positioning the extractor next to the IUD using the indicator for guidance, grasping means in the extractor is actuated to effect temporary attachment of the IUD to the extractor which is then withdrawn from the uterus.
    Type: Grant
    Filed: September 3, 1985
    Date of Patent: March 1, 1988
    Assignee: Ortho Pharmaceutical (Canada) Ltd.
    Inventors: Billy R. Livesay, Howard J. Tatum, Melvin R. Toews
  • Method for the detection, location and extraction of an intrauterine device
    Patent number: 4572162
    Abstract: A system for the detection, location and extraction of an intrauterine device ("IUD") including a magnetic IUD, a locator probe to be used intravaginally and an extractor probe to be used intrauterinally, both containing at least one Hall effect generator. The probe is inserted into the patient and an indicator means is provided to communicate the presence of the IUD, in the case of the locator, or the distance of the IUD from the probe, in the case of the extractor. After positioning the extractor next to the IUD using the indicator for guidance, grasping means in the extractor is actuated to effect temporary attachment of the IUD to the extractor which is then withdrawn from the uterus.
    Type: Grant
    Filed: January 23, 1984
    Date of Patent: February 25, 1986
    Assignee: Ortho Pharmaceutical (Canada) Ltd.
    Inventors: Billy R. Livesay, Howard J. Tatum, Melvin R. Toews