Patents by Inventor Thomas H. Thomson

Thomas H. Thomson 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).

  • Nerve fiber stimulation using plural equally active electrodes
    Patent number: 4803988
    Abstract: Nerve fiber stimulation is disclosed to substantially increase the activity of the then selected nerve fibers, with optimization being achieved through utilization of electrical pulses that are caused to occur in a predetermined pattern with respect to polarity, spacing, frequency and duration so as to interact with the electroneurophysiological characteristics of the particular nerve fibers then to be electrically stimulated.
    Type: Grant
    Filed: February 2, 1987
    Date of Patent: February 14, 1989
    Assignee: Staodynamics, Inc.
    Inventor: Thomas H. Thomson
  • Optimized nerve fiber stimulation
    Patent number: 4640286
    Abstract: Optimization of nerve fiber stimulation to substantially increase the activity of the then selected nerve fibers is disclosed, with optimization being achieved through utilization of electrical pulses that are caused to occur in a predetermined pattern with respect to polarity, spacing, frequency and duration so as to interact with the electro-neurophysiological characteristics of the particular nerve fibers then to be electrically stimulated.
    Type: Grant
    Filed: November 2, 1984
    Date of Patent: February 3, 1987
    Assignee: Staodynamics, Inc.
    Inventor: Thomas H. Thomson
  • Positive displacement intravenous infusion pump device and method
    Patent number: 4332246
    Abstract: A positive displacement intravenous infusion pump device and method are disclosed to precisely meter intravenous fluid to a patient. Intravenous fluid to be injected into the vein of a patient is placed in a closed rigid fluid container, and a variable (but fixed for each administration) quantity of incompressible material, stored in a separate receptacle, is introduced into the fluid container to cause displacement of fluid from the container to thereby inject the fluid into the vein of the patient. Introduction of incompressible material is controlled so that the intravenous fluid is injected in a controlled manner into the vein of the patient.
    Type: Grant
    Filed: June 30, 1980
    Date of Patent: June 1, 1982
    Assignee: Staodynamics, Inc.
    Inventor: Thomas H. Thomson
  • Transcutaneous nerve stimulator device and method
    Patent number: 4014347
    Abstract: A transcutaneous nerve stimulator as disclosed that is useful for suppression of organic pain. The stimulator device is relatively small in overall dimensions and is therefore portable yet provides a rectangular waveform with the output signal produced being sufficient to drive a capacitive resistance load of at least 2.2K ohms in parallel with 0.1Mfd with a maximum rise and fall time of 12 microseconds. The device is powered by a pair of NI-CD batteries providing a 2.5 volt input and produces a maximum 80 volt peak pulse output having a maximum duration of .10 milliseconds at a pulse rate between 20pps and 180pps. Potentiometers are provided to vary the pulse rate, the duty cycle, and output pulse amplitude as is necessary or desirable for a particular patient.
    Type: Grant
    Filed: May 27, 1975
    Date of Patent: March 29, 1977
    Assignee: Staodynamics, Inc.
    Inventors: Michael E. Halleck, Thomas H. Thomson