Abstract: A disposable, low profile sensor overlay covering for use with biomedical sensors and which includes a framework of flexible component layers supporting an arrangement of electrostatic shielding, insulating, cushioning, and electrically conductive adhesive substrate components configured to form a protective covering encasing the sensor. The combination of component layers provides a means to stabilize the relative position of the sensor with respect to the skin and reduce the potential for sensor dislodgment. The mechanical and electrical configurations act in synergy to shield the sensor from external electrical fields and suppress movement artifact.

Abstract: A biomedical sensor for detecting EMG signals may include a non-conducting fixed framework supporting a symmetrical arrangement of four electrode surfaces, configured as two signal detection contacts, each with a respective associated signal reference contact. The mechanical and electrical configuration act together to suppress movement artifact.

Abstract: A biomedical sensor for detecting EMG signals may include a non-conducting fixed framework supporting a symmetrical arrangement of four electrode surfaces, configured as two signal detection contacts, each with a respective associated signal reference contact. The mechanical and electrical configuration act together to suppress movement artifact.

Abstract: A disposable, low profile sensor overlay covering for use with biomedical sensors and which includes a framework of flexible component layers supporting an arrangement of electrostatic shielding, insulating, cushioning, and electrically conductive adhesive substrate components configured to form a protective covering encasing the sensor. The combination of component layers provides a means to stabilize the relative position of the sensor with respect to the skin and reduce the potential for sensor dislodgment. The mechanical and electrical configurations act in synergy to shield the sensor from external electrical fields and suppress movement artifact.

Abstract: A disposable, low profile biomedical sensor for detecting electrical signals from muscles and which consists of a framework of malleable and flexible component layers supporting an arrangement of conductor leads embedded within electrically conductive, adhesive, cross-linked hydrophilic polymer gel components configured to form signal detection and reference electrode contacts. The combination of component layers provides a sensor and lead cable that is flexible and can be contoured to conform to the underlying musculature. The mechanical and electrical configurations act in synergy to shield the sensor and lead cable from external electrical fields and suppress movement artifact.

Abstract: A process for assessing the signal quality of electromyographic (EMG) sensor signal data outputs based of a set of time domain and frequency domain signal performance metrics, including the magnitude of the baseline noise, line interference power spectra, and signal to baseline noise ratio parameters of the signal, whose calculated values are compared with a set of pre-defined acceptable values to determine whether or not the signal is of acceptable signal quality, and provide a pass/fail output. A graphic and text display output is provided to visually indicate the result. The visual display includes the presentation of the calculated parameter values of the baseline noise magnitude, line interference magnitude, and signal to baseline noise magnitude, using a combination of digital and analog indicators, each marked with the respective value of their pre-defined performance metric.

Abstract: A disposable, low profile biomedical sensor for detecting electrical signals from muscles and which consists of a framework of malleable and flexible component layers supporting an arrangement of conductor leads embedded within electrically conductive, adhesive, cross-linked hydrophilic polymer gel components configured to form signal detection and reference electrode contacts. The combination of component layers provides a sensor and lead cable that is flexible and can be contoured to conform to the underlying musculature. The mechanical and electrical configurations act in synergy to shield the sensor and lead cable from external electrical fields and suppress movement artifact.

Abstract: A method and computer readable storage media for organizing digital stream contents. A plurality of time-sequential segments of digital stream data may be stored in a corresponding plurality of stream data files. Identifying information for each of the stream data files may be stored in order of recording in an administrative file.

Abstract: A system and method for systematically and economically recovering formation liquids from the bottom of a petroleum well are disclosed. In a preferred embodiment, the system and method are passive in that they utilize the existing formation pressure of the well to remove fluid build-up across the perforations of the well bore in a manner that is completely free from surface control. The system is comprised of strategically placed carrier subs with installed pressure regulating devices. These carrier subs are regularly spaced below the production packer, along the tail pipe section of the production tubing string and facing the perforated intervals of the well bore. The pressure of the trapped formation gas above the accumulating formation liquid is insufficient to remove all of the formation liquid within the entire length of the tubing string 13.

Abstract: A biomedical electrode including a flexible pad having a top surface and a bottom surface; an asymmetrical, linearly aligned array of signal contacts retained by the flexible pad and each having a contact surface projecting from the bottom surface and a coupling surface projecting above the top surface; and a connector including a plurality of connector contacts each being shaped and arranged for electrical connection to a different one of the coupling surfaces. The asymmetrical array of signal contacts facilitates proper positioning of the electrode on the skin.

Abstract: A method for remotely monitoring and identifying Functional Activities performed by a test subject, the method including the steps of (a) extracting a given type of signals from each of a predetermined set of muscles of a control subject during the performance thereby of a given Functional Activity; (b) processing the signals to provide therefor given parameters affected by the given Functional Activity; (c) storing the data obtained in step (b); and (d) repeating steps (a)-(c) for a plurality of other control subjects. The stored data then is utilized to establish a normative data base indicative of the given Functional Activity and further steps include (f) extracting the given type of signals from each of at least some of the predetermined set of muscles of a test subject during a given monitoring period; and (g) comparing the data base to the signals of step (f) to identify during the monitoring period portions thereof during which the test subject was performing the given Functional Activity.

Abstract: A biosignal monitoring system including a plurality of sensors for disposition in predetermined positions on the body of a test subject; each sensor having contact surfaces shaped and arranged to detect a particular biosignal generated in the body, a sensor transceiver, a sensor antenna, a voltage supply, and a microprocessor programmed for processing the particular biosignal to provide given data; and a control station providing a wireless, bi-directional data communications link with the sensors; the control station having a station transceiver, a station antenna, and a computer for further processing the given data received from the sensors.

Abstract: A biomedical electrode including a flexible pad having a top surface and a bottom surface; an asymmetrical, linearly aligned array of signal contacts retained by the flexible pad and each having a contact surface projecting from the bottom surface and a coupling surface projecting above the top surface; and a connector including a plurality of connector contacts each being shaped and arranged for electrical connection to a different one of the coupling surfaces. The asymmetrical array of signal contacts facilitates proper positioning of the electrode on the skin.

Abstract: A method for detecting in a human test subject the presence of a harmful level of a chemical-biological agent, the method including the steps of administering a given dose of a predetermined chemical-biological agent to a control subject; extracting control EMG signals from the control subject; processing the control EMG signals to determine given parameters thereof; and storing data obtained in the processing step. The above steps are repeated for a plurality of other control subjects and the resultant data are used to determine the given dose of the predetermined chemical-biological agent a standard range of the given parameters. All of the above steps are repeated with each of a plurality of different sized chemical-biological doses of the predetermined chemical-biological agent and all resultant data are used to determine a normative range of the given parameters for each of the plurality of different sized chemical-biological doses.

Abstract: A method and apparatus for completing and backside pressure testing petroleum product wells for production, with one or more differential pressure valves being present at spaced intervals within a tubing string and with a well fluid transfer device being located in the tubing string. Either after or preferably before well casing perforation, after setting of the tubing string, casing pressure is elevated to a backside test pressure, above differential pressure causing closure of the differential pressure responsive valves to ensure the integrity of seals and packers. Casing pressure is then increased to a transfer valve opening pressure, above backside test pressure, to open unidirectional flow communication of well fluid from the well casing to the production tubing.