Patents by Inventor Marcia A. Ryder

Marcia A. Ryder 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).

  • Publication number: 20140039401
    Abstract: A securement device is provided for engaging a catheter in an engaged position on a patient's skin. The device is formed of a flexible base having two half portions foldable to adhere to a sandwiched engagement of the catheter along a pathway. A tearaway portion in one half portion when removed forms an exit for the catheter to allow for changing of the securement device. Pads are provided in positions to communicate anti-pathogenic agents to the skin at the insertion site.
    Type: Application
    Filed: July 31, 2013
    Publication date: February 6, 2014
    Inventors: Marshall Kerr, Michael J. Vaillancourt, Marcia A. Ryder, Donn K. Harms
  • Patent number: 5513637
    Abstract: A method and apparatus for determining accurately, both during and after insertion, the full length position of catheters (including implanted ports), tubes and placement guidewires within biological tissue is disclosed including a transmitter/detector unit having an alternating current (AC) radio-frequency (RF) transmitter with antenna and a radio signal transmitter in the form of a continuous or segmented fine wire receiving antenna situated along the full length of the catheter, guidewire, and implanted port assemblies. The guidewire apparatus also includes a tip antenna. These antennae are connected by a removable clip to a wide-band RF detector circuit, situated within the transmitter/detector unit. The RF transmitter/detector circuit provides a voltage output that is a direct function of the relative spatial proximity of the transmitting antenna. This proximity is displayed visually to the operator using a sequential linear LED array whose sensitivity is controlled by a gain control knob.
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: May 7, 1996
    Assignee: HDC Corporation
    Inventors: Robert G. Twiss, Marcia A. Ryder
  • Patent number: 5375596
    Abstract: A method and apparatus for determining accurately, both during and after insertion, the full length position of catheters (including implanted ports (64)), tubes (30) and placement guidewires (22) within biological tissue is disclosed including a transmitter/detector unit (2) having an alternating current (AC) radio-frequency (RF) transmitter with antenna (14), and a radio signal transmitter in the form of a continuous or segmented fine wire receiving antenna (28, 32, 74) situated along the full length of the catheter, guidewire, and implanted port assemblies (22, 30, 64). The guidewire apparatus also includes a tip antenna. These antennae are connected by a removable clip (18) to a wide-band RF detector circuit, situated within the transmitter/detector unit (2). The RF transmitter/detector circuit provides a voltage output that is a direct function of the relative spatial proximity of the transmitting antenna.
    Type: Grant
    Filed: September 29, 1972
    Date of Patent: December 27, 1994
    Assignee: HDC Corporation
    Inventors: Robert G. Twiss, Marcia A. Ryder