Patents Assigned to OB Scientific
  • Patent number: 7048687
    Abstract: A limited use medical probe is disclosed, including a memory for maintaining a use value. The medical probe is coupled to a medical device that inhibits its function when the use value reaches a predetermined threshold value, preventing improper use of the probe. The probe memory may also store identification, usage, and clinical data. A probe auto-identification function, a probe re-identification function and a probe functional test sequence are disclosed for the medical probe. After use, a reprocessing step may reset the probe memory, permitting further probe use.
    Type: Grant
    Filed: February 6, 2003
    Date of Patent: May 23, 2006
    Assignee: OB Scientific, Inc.
    Inventors: James L. Reuss, Gerhard von der Ruhr, Dennis E. Bahr, Michael T. Larsen
  • Patent number: 6711425
    Abstract: An improved pulse oximeter (sensor and monitor) uses a plurality of wavelengths selected to provide sensitivity to both oxygen saturation and deviations in tissue site characteristic(s) from conditions at calibration. The monitor detects and/or removes the effects of deviations on SpO2 calibration, of particular value in fetal/newborn monitoring.
    Type: Grant
    Filed: May 28, 2002
    Date of Patent: March 23, 2004
    Assignee: OB Scientific, Inc.
    Inventor: James L. Reuss
  • Patent number: 6647280
    Abstract: A signal processing method, preferably for extracting a fundamental period from a noisy, low-frequency signal, is disclosed. The signal processing method generally comprises calculating a numerical transform for a number of selected periods by multiplying signal data by discrete points of a sine and a cosine wave of varying period and summing the results. The period of the sine and cosine waves are preferably selected to have a period substantially equivalent to the period of interest when performing the transform.
    Type: Grant
    Filed: January 14, 2002
    Date of Patent: November 11, 2003
    Assignee: OB Scientific, Inc.
    Inventors: Dennis E. Bahr, James L. Reuss.
  • Patent number: 6449501
    Abstract: An improved pulse oximeter is disclosed. The pulse oximeter includes audio signal generation means, controlled by algorithms in a processing element which continuously transform the signals from the sensor into signal quality information. This information is converted into an audio signal and annunciated for the operator's use in guiding sensor placement. This signal quality information is available even in the absence of successful computation of pulse rate and/or oxygen saturation level. It furthermore can reflect signal quality changes that may be too subtle to be reflected in the typical numerical representation of pulse rate and oxygen saturation trend. The audio representation of the signal quality can further be modulated to convey other system and/or physiological status and alerts.
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: September 10, 2002
    Assignee: OB Scientific, Inc.
    Inventor: James L. Reuss
  • Patent number: 6339715
    Abstract: A signal processing method, preferably for extracting a fundamental period from a noisy, low-frequency signal, is disclosed. The signal processing method generally comprises calculating a numerical transform for a number of selected periods by multiplying signal data by discrete points of a sine and a cosine wave of varying period and summing the results. The period of the sine and cosine waves are preferably selected to have a period substantially equivalent to the period of interest when performing the transform.
    Type: Grant
    Filed: September 30, 1999
    Date of Patent: January 15, 2002
    Assignee: OB Scientific
    Inventors: Dennis E. Bahr, James L. Reuss